src/stdlib/SDL_iconv.c
author Ryan C. Gordon <icculus@icculus.org>
Thu, 09 Apr 2015 22:33:39 -0400
branchiOS-improvements
changeset 9542 618662dc9e82
parent 9306 817656bd36ec
child 9619 b94b6d0bff0f
permissions -rw-r--r--
Closing the iOS-improvements branch.
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/*
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  Simple DirectMedia Layer
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  Copyright (C) 1997-2014 Sam Lantinga <slouken@libsdl.org>
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  This software is provided 'as-is', without any express or implied
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  warranty.  In no event will the authors be held liable for any damages
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  arising from the use of this software.
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  Permission is granted to anyone to use this software for any purpose,
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  including commercial applications, and to alter it and redistribute it
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  freely, subject to the following restrictions:
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  1. The origin of this software must not be misrepresented; you must not
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     claim that you wrote the original software. If you use this software
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     in a product, an acknowledgment in the product documentation would be
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     appreciated but is not required.
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  2. Altered source versions must be plainly marked as such, and must not be
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     misrepresented as being the original software.
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  3. This notice may not be removed or altered from any source distribution.
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*/
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#if defined(__clang_analyzer__) && !defined(SDL_DISABLE_ANALYZE_MACROS)
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#define SDL_DISABLE_ANALYZE_MACROS 1
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#endif
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#include "../SDL_internal.h"
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/* This file contains portable iconv functions for SDL */
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#include "SDL_stdinc.h"
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#include "SDL_endian.h"
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#ifdef HAVE_ICONV
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/* Depending on which standard the iconv() was implemented with,
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   iconv() may or may not use const char ** for the inbuf param.
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   If we get this wrong, it's just a warning, so no big deal.
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*/
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#if defined(_XGP6) || defined(__APPLE__) || \
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    (defined(__GLIBC__) && ((__GLIBC__ > 2) || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 2)) || \
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    (defined(_NEWLIB_VERSION)))
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#define ICONV_INBUF_NONCONST
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#endif
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#include <errno.h>
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SDL_COMPILE_TIME_ASSERT(iconv_t, sizeof (iconv_t) <= sizeof (SDL_iconv_t));
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SDL_iconv_t
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SDL_iconv_open(const char *tocode, const char *fromcode)
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{
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    return (SDL_iconv_t) ((size_t) iconv_open(tocode, fromcode));
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}
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int
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SDL_iconv_close(SDL_iconv_t cd)
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{
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    return iconv_close((iconv_t) ((size_t) cd));
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}
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size_t
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SDL_iconv(SDL_iconv_t cd,
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          const char **inbuf, size_t * inbytesleft,
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          char **outbuf, size_t * outbytesleft)
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{
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    size_t retCode;
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#ifdef ICONV_INBUF_NONCONST
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    retCode = iconv((iconv_t) ((size_t) cd), (char **) inbuf, inbytesleft, outbuf, outbytesleft);
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#else
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    retCode = iconv((iconv_t) ((size_t) cd), inbuf, inbytesleft, outbuf, outbytesleft);
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#endif
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    if (retCode == (size_t) - 1) {
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        switch (errno) {
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        case E2BIG:
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            return SDL_ICONV_E2BIG;
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        case EILSEQ:
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            return SDL_ICONV_EILSEQ;
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        case EINVAL:
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            return SDL_ICONV_EINVAL;
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        default:
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            return SDL_ICONV_ERROR;
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        }
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    }
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    return retCode;
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}
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#else
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/* Lots of useful information on Unicode at:
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	http://www.cl.cam.ac.uk/~mgk25/unicode.html
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*/
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#define UNICODE_BOM	0xFEFF
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#define UNKNOWN_ASCII	'?'
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#define UNKNOWN_UNICODE	0xFFFD
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enum
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{
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    ENCODING_UNKNOWN,
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    ENCODING_ASCII,
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    ENCODING_LATIN1,
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    ENCODING_UTF8,
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    ENCODING_UTF16,             /* Needs byte order marker */
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    ENCODING_UTF16BE,
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    ENCODING_UTF16LE,
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    ENCODING_UTF32,             /* Needs byte order marker */
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    ENCODING_UTF32BE,
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    ENCODING_UTF32LE,
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    ENCODING_UCS2BE,
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    ENCODING_UCS2LE,
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    ENCODING_UCS4BE,
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    ENCODING_UCS4LE,
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};
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#if SDL_BYTEORDER == SDL_BIG_ENDIAN
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#define ENCODING_UTF16NATIVE	ENCODING_UTF16BE
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#define ENCODING_UTF32NATIVE	ENCODING_UTF32BE
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#define ENCODING_UCS2NATIVE     ENCODING_UCS2BE
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#define ENCODING_UCS4NATIVE     ENCODING_UCS4BE
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#else
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#define ENCODING_UTF16NATIVE	ENCODING_UTF16LE
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#define ENCODING_UTF32NATIVE	ENCODING_UTF32LE
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#define ENCODING_UCS2NATIVE     ENCODING_UCS2LE
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#define ENCODING_UCS4NATIVE     ENCODING_UCS4LE
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#endif
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struct _SDL_iconv_t
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{
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    int src_fmt;
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    int dst_fmt;
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};
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static struct
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{
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    const char *name;
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    int format;
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} encodings[] = {
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/* *INDENT-OFF* */
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    { "ASCII", ENCODING_ASCII },
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    { "US-ASCII", ENCODING_ASCII },
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    { "8859-1", ENCODING_LATIN1 },
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    { "ISO-8859-1", ENCODING_LATIN1 },
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   143
    { "UTF8", ENCODING_UTF8 },
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    { "UTF-8", ENCODING_UTF8 },
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    { "UTF16", ENCODING_UTF16 },
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    { "UTF-16", ENCODING_UTF16 },
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   147
    { "UTF16BE", ENCODING_UTF16BE },
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    { "UTF-16BE", ENCODING_UTF16BE },
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   149
    { "UTF16LE", ENCODING_UTF16LE },
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    { "UTF-16LE", ENCODING_UTF16LE },
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   151
    { "UTF32", ENCODING_UTF32 },
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    { "UTF-32", ENCODING_UTF32 },
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   153
    { "UTF32BE", ENCODING_UTF32BE },
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    { "UTF-32BE", ENCODING_UTF32BE },
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   155
    { "UTF32LE", ENCODING_UTF32LE },
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    { "UTF-32LE", ENCODING_UTF32LE },
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    { "UCS2", ENCODING_UCS2BE },
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    { "UCS-2", ENCODING_UCS2BE },
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    { "UCS-2LE", ENCODING_UCS2LE },
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    { "UCS-2BE", ENCODING_UCS2BE },
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    { "UCS-2-INTERNAL", ENCODING_UCS2NATIVE },
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    { "UCS4", ENCODING_UCS4BE },
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    { "UCS-4", ENCODING_UCS4BE },
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    { "UCS-4LE", ENCODING_UCS4LE },
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    { "UCS-4BE", ENCODING_UCS4BE },
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    { "UCS-4-INTERNAL", ENCODING_UCS4NATIVE },
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/* *INDENT-ON* */
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   168
};
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static const char *
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getlocale(char *buffer, size_t bufsize)
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{
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    const char *lang;
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    char *ptr;
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   175
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    lang = SDL_getenv("LC_ALL");
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    if (!lang) {
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        lang = SDL_getenv("LC_CTYPE");
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    }
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    if (!lang) {
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        lang = SDL_getenv("LC_MESSAGES");
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    }
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    if (!lang) {
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        lang = SDL_getenv("LANG");
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   185
    }
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    if (!lang || !*lang || SDL_strcmp(lang, "C") == 0) {
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        lang = "ASCII";
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   188
    }
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   189
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    /* We need to trim down strings like "en_US.UTF-8@blah" to "UTF-8" */
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    ptr = SDL_strchr(lang, '.');
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   192
    if (ptr != NULL) {
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        lang = ptr + 1;
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   194
    }
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   195
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    SDL_strlcpy(buffer, lang, bufsize);
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   197
    ptr = SDL_strchr(buffer, '@');
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   198
    if (ptr != NULL) {
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   199
        *ptr = '\0';            /* chop end of string. */
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   200
    }
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   201
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   202
    return buffer;
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   203
}
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   204
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SDL_iconv_t
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   206
SDL_iconv_open(const char *tocode, const char *fromcode)
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{
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    int src_fmt = ENCODING_UNKNOWN;
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    int dst_fmt = ENCODING_UNKNOWN;
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   210
    int i;
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   211
    char fromcode_buffer[64];
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   212
    char tocode_buffer[64];
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   213
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   214
    if (!fromcode || !*fromcode) {
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   215
        fromcode = getlocale(fromcode_buffer, sizeof(fromcode_buffer));
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   216
    }
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   217
    if (!tocode || !*tocode) {
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   218
        tocode = getlocale(tocode_buffer, sizeof(tocode_buffer));
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   219
    }
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   220
    for (i = 0; i < SDL_arraysize(encodings); ++i) {
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   221
        if (SDL_strcasecmp(fromcode, encodings[i].name) == 0) {
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   222
            src_fmt = encodings[i].format;
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   223
            if (dst_fmt != ENCODING_UNKNOWN) {
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   224
                break;
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   225
            }
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   226
        }
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   227
        if (SDL_strcasecmp(tocode, encodings[i].name) == 0) {
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   228
            dst_fmt = encodings[i].format;
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   229
            if (src_fmt != ENCODING_UNKNOWN) {
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   230
                break;
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   231
            }
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   232
        }
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   233
    }
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   234
    if (src_fmt != ENCODING_UNKNOWN && dst_fmt != ENCODING_UNKNOWN) {
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   235
        SDL_iconv_t cd = (SDL_iconv_t) SDL_malloc(sizeof(*cd));
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   236
        if (cd) {
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   237
            cd->src_fmt = src_fmt;
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   238
            cd->dst_fmt = dst_fmt;
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   239
            return cd;
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diff changeset
   240
        }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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diff changeset
   241
    }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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diff changeset
   242
    return (SDL_iconv_t) - 1;
1501
73dc5d39bbf8 Added UTF-8 <-> UTF-16 <-> UTF-32 <-> UCS-2 <-> UCS-4 conversion capability
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   243
}
73dc5d39bbf8 Added UTF-8 <-> UTF-16 <-> UTF-32 <-> UCS-2 <-> UCS-4 conversion capability
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parents:
diff changeset
   244
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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diff changeset
   245
size_t
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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diff changeset
   246
SDL_iconv(SDL_iconv_t cd,
2135
0313af081a84 Merge iconv const changes from 1.2
Sam Lantinga <slouken@libsdl.org>
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diff changeset
   247
          const char **inbuf, size_t * inbytesleft,
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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diff changeset
   248
          char **outbuf, size_t * outbytesleft)
1501
73dc5d39bbf8 Added UTF-8 <-> UTF-16 <-> UTF-32 <-> UCS-2 <-> UCS-4 conversion capability
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parents:
diff changeset
   249
{
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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parents: 1849
diff changeset
   250
    /* For simplicity, we'll convert everything to and from UCS-4 */
2135
0313af081a84 Merge iconv const changes from 1.2
Sam Lantinga <slouken@libsdl.org>
parents: 1895
diff changeset
   251
    const char *src;
0313af081a84 Merge iconv const changes from 1.2
Sam Lantinga <slouken@libsdl.org>
parents: 1895
diff changeset
   252
    char *dst;
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   253
    size_t srclen, dstlen;
2135
0313af081a84 Merge iconv const changes from 1.2
Sam Lantinga <slouken@libsdl.org>
parents: 1895
diff changeset
   254
    Uint32 ch = 0;
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   255
    size_t total;
1501
73dc5d39bbf8 Added UTF-8 <-> UTF-16 <-> UTF-32 <-> UCS-2 <-> UCS-4 conversion capability
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   256
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   257
    if (!inbuf || !*inbuf) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   258
        /* Reset the context */
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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parents: 1849
diff changeset
   259
        return 0;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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parents: 1849
diff changeset
   260
    }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   261
    if (!outbuf || !*outbuf || !outbytesleft || !*outbytesleft) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   262
        return SDL_ICONV_E2BIG;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   263
    }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   264
    src = *inbuf;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   265
    srclen = (inbytesleft ? *inbytesleft : 0);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   266
    dst = *outbuf;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   267
    dstlen = *outbytesleft;
1501
73dc5d39bbf8 Added UTF-8 <-> UTF-16 <-> UTF-32 <-> UCS-2 <-> UCS-4 conversion capability
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   268
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   269
    switch (cd->src_fmt) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   270
    case ENCODING_UTF16:
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   271
        /* Scan for a byte order marker */
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   272
        {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   273
            Uint8 *p = (Uint8 *) src;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   274
            size_t n = srclen / 2;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   275
            while (n) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   276
                if (p[0] == 0xFF && p[1] == 0xFE) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   277
                    cd->src_fmt = ENCODING_UTF16BE;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   278
                    break;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   279
                } else if (p[0] == 0xFE && p[1] == 0xFF) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   280
                    cd->src_fmt = ENCODING_UTF16LE;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   281
                    break;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   282
                }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   283
                p += 2;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   284
                --n;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   285
            }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   286
            if (n == 0) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   287
                /* We can't tell, default to host order */
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   288
                cd->src_fmt = ENCODING_UTF16NATIVE;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   289
            }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   290
        }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   291
        break;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   292
    case ENCODING_UTF32:
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   293
        /* Scan for a byte order marker */
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   294
        {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   295
            Uint8 *p = (Uint8 *) src;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   296
            size_t n = srclen / 4;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   297
            while (n) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   298
                if (p[0] == 0xFF && p[1] == 0xFE &&
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   299
                    p[2] == 0x00 && p[3] == 0x00) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   300
                    cd->src_fmt = ENCODING_UTF32BE;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   301
                    break;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   302
                } else if (p[0] == 0x00 && p[1] == 0x00 &&
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   303
                           p[2] == 0xFE && p[3] == 0xFF) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   304
                    cd->src_fmt = ENCODING_UTF32LE;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   305
                    break;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   306
                }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   307
                p += 4;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   308
                --n;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   309
            }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   310
            if (n == 0) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   311
                /* We can't tell, default to host order */
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   312
                cd->src_fmt = ENCODING_UTF32NATIVE;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   313
            }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   314
        }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   315
        break;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   316
    }
1501
73dc5d39bbf8 Added UTF-8 <-> UTF-16 <-> UTF-32 <-> UCS-2 <-> UCS-4 conversion capability
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   317
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   318
    switch (cd->dst_fmt) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   319
    case ENCODING_UTF16:
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   320
        /* Default to host order, need to add byte order marker */
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   321
        if (dstlen < 2) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   322
            return SDL_ICONV_E2BIG;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   323
        }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   324
        *(Uint16 *) dst = UNICODE_BOM;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   325
        dst += 2;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   326
        dstlen -= 2;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   327
        cd->dst_fmt = ENCODING_UTF16NATIVE;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   328
        break;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   329
    case ENCODING_UTF32:
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   330
        /* Default to host order, need to add byte order marker */
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   331
        if (dstlen < 4) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   332
            return SDL_ICONV_E2BIG;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   333
        }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   334
        *(Uint32 *) dst = UNICODE_BOM;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   335
        dst += 4;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   336
        dstlen -= 4;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   337
        cd->dst_fmt = ENCODING_UTF32NATIVE;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   338
        break;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   339
    }
1501
73dc5d39bbf8 Added UTF-8 <-> UTF-16 <-> UTF-32 <-> UCS-2 <-> UCS-4 conversion capability
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   340
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   341
    total = 0;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   342
    while (srclen > 0) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   343
        /* Decode a character */
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   344
        switch (cd->src_fmt) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   345
        case ENCODING_ASCII:
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   346
            {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   347
                Uint8 *p = (Uint8 *) src;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   348
                ch = (Uint32) (p[0] & 0x7F);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   349
                ++src;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   350
                --srclen;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   351
            }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   352
            break;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   353
        case ENCODING_LATIN1:
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   354
            {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   355
                Uint8 *p = (Uint8 *) src;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   356
                ch = (Uint32) p[0];
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   357
                ++src;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   358
                --srclen;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   359
            }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   360
            break;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   361
        case ENCODING_UTF8:    /* RFC 3629 */
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   362
            {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   363
                Uint8 *p = (Uint8 *) src;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   364
                size_t left = 0;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   365
                SDL_bool overlong = SDL_FALSE;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   366
                if (p[0] >= 0xFC) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   367
                    if ((p[0] & 0xFE) != 0xFC) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   368
                        /* Skip illegal sequences
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   369
                           return SDL_ICONV_EILSEQ;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   370
                         */
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   371
                        ch = UNKNOWN_UNICODE;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   372
                    } else {
7349
a96c85910792 Fixed detection of overlong sequences (thanks Tommy!)
Sam Lantinga <slouken@libsdl.org>
parents: 7003
diff changeset
   373
                        if (p[0] == 0xFC && srclen > 1 && (p[1] & 0xFC) == 0x80) {
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   374
                            overlong = SDL_TRUE;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   375
                        }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   376
                        ch = (Uint32) (p[0] & 0x01);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   377
                        left = 5;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   378
                    }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   379
                } else if (p[0] >= 0xF8) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   380
                    if ((p[0] & 0xFC) != 0xF8) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   381
                        /* Skip illegal sequences
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   382
                           return SDL_ICONV_EILSEQ;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   383
                         */
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   384
                        ch = UNKNOWN_UNICODE;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   385
                    } else {
7349
a96c85910792 Fixed detection of overlong sequences (thanks Tommy!)
Sam Lantinga <slouken@libsdl.org>
parents: 7003
diff changeset
   386
                        if (p[0] == 0xF8 && srclen > 1 && (p[1] & 0xF8) == 0x80) {
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   387
                            overlong = SDL_TRUE;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   388
                        }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   389
                        ch = (Uint32) (p[0] & 0x03);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   390
                        left = 4;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   391
                    }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   392
                } else if (p[0] >= 0xF0) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   393
                    if ((p[0] & 0xF8) != 0xF0) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   394
                        /* Skip illegal sequences
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   395
                           return SDL_ICONV_EILSEQ;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   396
                         */
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   397
                        ch = UNKNOWN_UNICODE;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   398
                    } else {
7349
a96c85910792 Fixed detection of overlong sequences (thanks Tommy!)
Sam Lantinga <slouken@libsdl.org>
parents: 7003
diff changeset
   399
                        if (p[0] == 0xF0 && srclen > 1 && (p[1] & 0xF0) == 0x80) {
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   400
                            overlong = SDL_TRUE;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   401
                        }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   402
                        ch = (Uint32) (p[0] & 0x07);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   403
                        left = 3;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   404
                    }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   405
                } else if (p[0] >= 0xE0) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   406
                    if ((p[0] & 0xF0) != 0xE0) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   407
                        /* Skip illegal sequences
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   408
                           return SDL_ICONV_EILSEQ;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   409
                         */
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   410
                        ch = UNKNOWN_UNICODE;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   411
                    } else {
7349
a96c85910792 Fixed detection of overlong sequences (thanks Tommy!)
Sam Lantinga <slouken@libsdl.org>
parents: 7003
diff changeset
   412
                        if (p[0] == 0xE0 && srclen > 1 && (p[1] & 0xE0) == 0x80) {
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   413
                            overlong = SDL_TRUE;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   414
                        }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   415
                        ch = (Uint32) (p[0] & 0x0F);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   416
                        left = 2;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   417
                    }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   418
                } else if (p[0] >= 0xC0) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   419
                    if ((p[0] & 0xE0) != 0xC0) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   420
                        /* Skip illegal sequences
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   421
                           return SDL_ICONV_EILSEQ;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   422
                         */
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   423
                        ch = UNKNOWN_UNICODE;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   424
                    } else {
3539
f2846bf19360 Fixed bug #896
Sam Lantinga <slouken@libsdl.org>
parents: 3320
diff changeset
   425
                        if ((p[0] & 0xDE) == 0xC0) {
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   426
                            overlong = SDL_TRUE;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   427
                        }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   428
                        ch = (Uint32) (p[0] & 0x1F);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   429
                        left = 1;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   430
                    }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   431
                } else {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   432
                    if ((p[0] & 0x80) != 0x00) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   433
                        /* Skip illegal sequences
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   434
                           return SDL_ICONV_EILSEQ;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   435
                         */
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   436
                        ch = UNKNOWN_UNICODE;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   437
                    } else {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   438
                        ch = (Uint32) p[0];
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   439
                    }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   440
                }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   441
                ++src;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   442
                --srclen;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   443
                if (srclen < left) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   444
                    return SDL_ICONV_EINVAL;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   445
                }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   446
                while (left--) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   447
                    ++p;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   448
                    if ((p[0] & 0xC0) != 0x80) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   449
                        /* Skip illegal sequences
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   450
                           return SDL_ICONV_EILSEQ;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   451
                         */
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   452
                        ch = UNKNOWN_UNICODE;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   453
                        break;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   454
                    }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   455
                    ch <<= 6;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   456
                    ch |= (p[0] & 0x3F);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   457
                    ++src;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   458
                    --srclen;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   459
                }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   460
                if (overlong) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   461
                    /* Potential security risk
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   462
                       return SDL_ICONV_EILSEQ;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   463
                     */
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   464
                    ch = UNKNOWN_UNICODE;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   465
                }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   466
                if ((ch >= 0xD800 && ch <= 0xDFFF) ||
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   467
                    (ch == 0xFFFE || ch == 0xFFFF) || ch > 0x10FFFF) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   468
                    /* Skip illegal sequences
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   469
                       return SDL_ICONV_EILSEQ;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   470
                     */
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   471
                    ch = UNKNOWN_UNICODE;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   472
                }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   473
            }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   474
            break;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   475
        case ENCODING_UTF16BE: /* RFC 2781 */
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   476
            {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   477
                Uint8 *p = (Uint8 *) src;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   478
                Uint16 W1, W2;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   479
                if (srclen < 2) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   480
                    return SDL_ICONV_EINVAL;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   481
                }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   482
                W1 = ((Uint16) p[0] << 8) | (Uint16) p[1];
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   483
                src += 2;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   484
                srclen -= 2;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   485
                if (W1 < 0xD800 || W1 > 0xDFFF) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   486
                    ch = (Uint32) W1;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   487
                    break;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   488
                }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   489
                if (W1 > 0xDBFF) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   490
                    /* Skip illegal sequences
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   491
                       return SDL_ICONV_EILSEQ;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   492
                     */
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   493
                    ch = UNKNOWN_UNICODE;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   494
                    break;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   495
                }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   496
                if (srclen < 2) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   497
                    return SDL_ICONV_EINVAL;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   498
                }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   499
                p = (Uint8 *) src;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   500
                W2 = ((Uint16) p[0] << 8) | (Uint16) p[1];
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   501
                src += 2;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   502
                srclen -= 2;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   503
                if (W2 < 0xDC00 || W2 > 0xDFFF) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   504
                    /* Skip illegal sequences
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   505
                       return SDL_ICONV_EILSEQ;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   506
                     */
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   507
                    ch = UNKNOWN_UNICODE;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   508
                    break;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   509
                }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   510
                ch = (((Uint32) (W1 & 0x3FF) << 10) |
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   511
                      (Uint32) (W2 & 0x3FF)) + 0x10000;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   512
            }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   513
            break;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   514
        case ENCODING_UTF16LE: /* RFC 2781 */
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   515
            {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   516
                Uint8 *p = (Uint8 *) src;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   517
                Uint16 W1, W2;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   518
                if (srclen < 2) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   519
                    return SDL_ICONV_EINVAL;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   520
                }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   521
                W1 = ((Uint16) p[1] << 8) | (Uint16) p[0];
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   522
                src += 2;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   523
                srclen -= 2;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   524
                if (W1 < 0xD800 || W1 > 0xDFFF) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   525
                    ch = (Uint32) W1;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   526
                    break;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   527
                }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   528
                if (W1 > 0xDBFF) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   529
                    /* Skip illegal sequences
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   530
                       return SDL_ICONV_EILSEQ;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   531
                     */
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   532
                    ch = UNKNOWN_UNICODE;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   533
                    break;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   534
                }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   535
                if (srclen < 2) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   536
                    return SDL_ICONV_EINVAL;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   537
                }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   538
                p = (Uint8 *) src;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   539
                W2 = ((Uint16) p[1] << 8) | (Uint16) p[0];
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   540
                src += 2;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   541
                srclen -= 2;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   542
                if (W2 < 0xDC00 || W2 > 0xDFFF) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   543
                    /* Skip illegal sequences
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   544
                       return SDL_ICONV_EILSEQ;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   545
                     */
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   546
                    ch = UNKNOWN_UNICODE;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   547
                    break;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   548
                }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   549
                ch = (((Uint32) (W1 & 0x3FF) << 10) |
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   550
                      (Uint32) (W2 & 0x3FF)) + 0x10000;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   551
            }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   552
            break;
6610
4032f8efdfe7 It turns out that UCS2 and UCS4 are defined as big-endian encodings
Sam Lantinga <slouken@libsdl.org>
parents: 6138
diff changeset
   553
        case ENCODING_UCS2LE:
4032f8efdfe7 It turns out that UCS2 and UCS4 are defined as big-endian encodings
Sam Lantinga <slouken@libsdl.org>
parents: 6138
diff changeset
   554
            {
4032f8efdfe7 It turns out that UCS2 and UCS4 are defined as big-endian encodings
Sam Lantinga <slouken@libsdl.org>
parents: 6138
diff changeset
   555
                Uint8 *p = (Uint8 *) src;
4032f8efdfe7 It turns out that UCS2 and UCS4 are defined as big-endian encodings
Sam Lantinga <slouken@libsdl.org>
parents: 6138
diff changeset
   556
                if (srclen < 2) {
4032f8efdfe7 It turns out that UCS2 and UCS4 are defined as big-endian encodings
Sam Lantinga <slouken@libsdl.org>
parents: 6138
diff changeset
   557
                    return SDL_ICONV_EINVAL;
4032f8efdfe7 It turns out that UCS2 and UCS4 are defined as big-endian encodings
Sam Lantinga <slouken@libsdl.org>
parents: 6138
diff changeset
   558
                }
4032f8efdfe7 It turns out that UCS2 and UCS4 are defined as big-endian encodings
Sam Lantinga <slouken@libsdl.org>
parents: 6138
diff changeset
   559
                ch = ((Uint32) p[1] << 8) | (Uint32) p[0];
4032f8efdfe7 It turns out that UCS2 and UCS4 are defined as big-endian encodings
Sam Lantinga <slouken@libsdl.org>
parents: 6138
diff changeset
   560
                src += 2;
4032f8efdfe7 It turns out that UCS2 and UCS4 are defined as big-endian encodings
Sam Lantinga <slouken@libsdl.org>
parents: 6138
diff changeset
   561
                srclen -= 2;
4032f8efdfe7 It turns out that UCS2 and UCS4 are defined as big-endian encodings
Sam Lantinga <slouken@libsdl.org>
parents: 6138
diff changeset
   562
            }
4032f8efdfe7 It turns out that UCS2 and UCS4 are defined as big-endian encodings
Sam Lantinga <slouken@libsdl.org>
parents: 6138
diff changeset
   563
            break;
4032f8efdfe7 It turns out that UCS2 and UCS4 are defined as big-endian encodings
Sam Lantinga <slouken@libsdl.org>
parents: 6138
diff changeset
   564
        case ENCODING_UCS2BE:
4032f8efdfe7 It turns out that UCS2 and UCS4 are defined as big-endian encodings
Sam Lantinga <slouken@libsdl.org>
parents: 6138
diff changeset
   565
            {
4032f8efdfe7 It turns out that UCS2 and UCS4 are defined as big-endian encodings
Sam Lantinga <slouken@libsdl.org>
parents: 6138
diff changeset
   566
                Uint8 *p = (Uint8 *) src;
4032f8efdfe7 It turns out that UCS2 and UCS4 are defined as big-endian encodings
Sam Lantinga <slouken@libsdl.org>
parents: 6138
diff changeset
   567
                if (srclen < 2) {
4032f8efdfe7 It turns out that UCS2 and UCS4 are defined as big-endian encodings
Sam Lantinga <slouken@libsdl.org>
parents: 6138
diff changeset
   568
                    return SDL_ICONV_EINVAL;
4032f8efdfe7 It turns out that UCS2 and UCS4 are defined as big-endian encodings
Sam Lantinga <slouken@libsdl.org>
parents: 6138
diff changeset
   569
                }
4032f8efdfe7 It turns out that UCS2 and UCS4 are defined as big-endian encodings
Sam Lantinga <slouken@libsdl.org>
parents: 6138
diff changeset
   570
                ch = ((Uint32) p[0] << 8) | (Uint32) p[1];
4032f8efdfe7 It turns out that UCS2 and UCS4 are defined as big-endian encodings
Sam Lantinga <slouken@libsdl.org>
parents: 6138
diff changeset
   571
                src += 2;
4032f8efdfe7 It turns out that UCS2 and UCS4 are defined as big-endian encodings
Sam Lantinga <slouken@libsdl.org>
parents: 6138
diff changeset
   572
                srclen -= 2;
4032f8efdfe7 It turns out that UCS2 and UCS4 are defined as big-endian encodings
Sam Lantinga <slouken@libsdl.org>
parents: 6138
diff changeset
   573
            }
4032f8efdfe7 It turns out that UCS2 and UCS4 are defined as big-endian encodings
Sam Lantinga <slouken@libsdl.org>
parents: 6138
diff changeset
   574
            break;
4032f8efdfe7 It turns out that UCS2 and UCS4 are defined as big-endian encodings
Sam Lantinga <slouken@libsdl.org>
parents: 6138
diff changeset
   575
        case ENCODING_UCS4BE:
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   576
        case ENCODING_UTF32BE:
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   577
            {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   578
                Uint8 *p = (Uint8 *) src;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   579
                if (srclen < 4) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   580
                    return SDL_ICONV_EINVAL;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   581
                }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   582
                ch = ((Uint32) p[0] << 24) |
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   583
                    ((Uint32) p[1] << 16) |
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   584
                    ((Uint32) p[2] << 8) | (Uint32) p[3];
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   585
                src += 4;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   586
                srclen -= 4;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   587
            }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   588
            break;
6610
4032f8efdfe7 It turns out that UCS2 and UCS4 are defined as big-endian encodings
Sam Lantinga <slouken@libsdl.org>
parents: 6138
diff changeset
   589
        case ENCODING_UCS4LE:
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   590
        case ENCODING_UTF32LE:
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   591
            {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   592
                Uint8 *p = (Uint8 *) src;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   593
                if (srclen < 4) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   594
                    return SDL_ICONV_EINVAL;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   595
                }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   596
                ch = ((Uint32) p[3] << 24) |
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   597
                    ((Uint32) p[2] << 16) |
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   598
                    ((Uint32) p[1] << 8) | (Uint32) p[0];
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   599
                src += 4;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   600
                srclen -= 4;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   601
            }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   602
            break;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   603
        }
1501
73dc5d39bbf8 Added UTF-8 <-> UTF-16 <-> UTF-32 <-> UCS-2 <-> UCS-4 conversion capability
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   604
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   605
        /* Encode a character */
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   606
        switch (cd->dst_fmt) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   607
        case ENCODING_ASCII:
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   608
            {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   609
                Uint8 *p = (Uint8 *) dst;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   610
                if (dstlen < 1) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   611
                    return SDL_ICONV_E2BIG;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   612
                }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   613
                if (ch > 0x7F) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   614
                    *p = UNKNOWN_ASCII;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   615
                } else {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   616
                    *p = (Uint8) ch;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   617
                }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   618
                ++dst;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   619
                --dstlen;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   620
            }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   621
            break;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   622
        case ENCODING_LATIN1:
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   623
            {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   624
                Uint8 *p = (Uint8 *) dst;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   625
                if (dstlen < 1) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   626
                    return SDL_ICONV_E2BIG;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   627
                }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   628
                if (ch > 0xFF) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   629
                    *p = UNKNOWN_ASCII;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   630
                } else {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   631
                    *p = (Uint8) ch;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   632
                }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   633
                ++dst;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   634
                --dstlen;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   635
            }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   636
            break;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   637
        case ENCODING_UTF8:    /* RFC 3629 */
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   638
            {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   639
                Uint8 *p = (Uint8 *) dst;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   640
                if (ch > 0x10FFFF) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   641
                    ch = UNKNOWN_UNICODE;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   642
                }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   643
                if (ch <= 0x7F) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   644
                    if (dstlen < 1) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   645
                        return SDL_ICONV_E2BIG;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   646
                    }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   647
                    *p = (Uint8) ch;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   648
                    ++dst;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   649
                    --dstlen;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   650
                } else if (ch <= 0x7FF) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   651
                    if (dstlen < 2) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   652
                        return SDL_ICONV_E2BIG;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   653
                    }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   654
                    p[0] = 0xC0 | (Uint8) ((ch >> 6) & 0x1F);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   655
                    p[1] = 0x80 | (Uint8) (ch & 0x3F);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   656
                    dst += 2;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   657
                    dstlen -= 2;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   658
                } else if (ch <= 0xFFFF) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   659
                    if (dstlen < 3) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   660
                        return SDL_ICONV_E2BIG;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   661
                    }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   662
                    p[0] = 0xE0 | (Uint8) ((ch >> 12) & 0x0F);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   663
                    p[1] = 0x80 | (Uint8) ((ch >> 6) & 0x3F);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   664
                    p[2] = 0x80 | (Uint8) (ch & 0x3F);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   665
                    dst += 3;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   666
                    dstlen -= 3;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   667
                } else if (ch <= 0x1FFFFF) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   668
                    if (dstlen < 4) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   669
                        return SDL_ICONV_E2BIG;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   670
                    }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   671
                    p[0] = 0xF0 | (Uint8) ((ch >> 18) & 0x07);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   672
                    p[1] = 0x80 | (Uint8) ((ch >> 12) & 0x3F);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   673
                    p[2] = 0x80 | (Uint8) ((ch >> 6) & 0x3F);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   674
                    p[3] = 0x80 | (Uint8) (ch & 0x3F);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   675
                    dst += 4;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   676
                    dstlen -= 4;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   677
                } else if (ch <= 0x3FFFFFF) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   678
                    if (dstlen < 5) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   679
                        return SDL_ICONV_E2BIG;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   680
                    }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   681
                    p[0] = 0xF8 | (Uint8) ((ch >> 24) & 0x03);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   682
                    p[1] = 0x80 | (Uint8) ((ch >> 18) & 0x3F);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   683
                    p[2] = 0x80 | (Uint8) ((ch >> 12) & 0x3F);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   684
                    p[3] = 0x80 | (Uint8) ((ch >> 6) & 0x3F);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   685
                    p[4] = 0x80 | (Uint8) (ch & 0x3F);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   686
                    dst += 5;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   687
                    dstlen -= 5;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   688
                } else {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   689
                    if (dstlen < 6) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   690
                        return SDL_ICONV_E2BIG;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   691
                    }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   692
                    p[0] = 0xFC | (Uint8) ((ch >> 30) & 0x01);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   693
                    p[1] = 0x80 | (Uint8) ((ch >> 24) & 0x3F);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   694
                    p[2] = 0x80 | (Uint8) ((ch >> 18) & 0x3F);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   695
                    p[3] = 0x80 | (Uint8) ((ch >> 12) & 0x3F);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   696
                    p[4] = 0x80 | (Uint8) ((ch >> 6) & 0x3F);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   697
                    p[5] = 0x80 | (Uint8) (ch & 0x3F);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   698
                    dst += 6;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   699
                    dstlen -= 6;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   700
                }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   701
            }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   702
            break;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   703
        case ENCODING_UTF16BE: /* RFC 2781 */
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   704
            {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   705
                Uint8 *p = (Uint8 *) dst;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   706
                if (ch > 0x10FFFF) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   707
                    ch = UNKNOWN_UNICODE;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   708
                }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   709
                if (ch < 0x10000) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   710
                    if (dstlen < 2) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   711
                        return SDL_ICONV_E2BIG;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   712
                    }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   713
                    p[0] = (Uint8) (ch >> 8);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   714
                    p[1] = (Uint8) ch;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   715
                    dst += 2;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   716
                    dstlen -= 2;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   717
                } else {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   718
                    Uint16 W1, W2;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   719
                    if (dstlen < 4) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   720
                        return SDL_ICONV_E2BIG;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   721
                    }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   722
                    ch = ch - 0x10000;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   723
                    W1 = 0xD800 | (Uint16) ((ch >> 10) & 0x3FF);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   724
                    W2 = 0xDC00 | (Uint16) (ch & 0x3FF);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   725
                    p[0] = (Uint8) (W1 >> 8);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   726
                    p[1] = (Uint8) W1;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   727
                    p[2] = (Uint8) (W2 >> 8);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   728
                    p[3] = (Uint8) W2;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   729
                    dst += 4;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   730
                    dstlen -= 4;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   731
                }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   732
            }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   733
            break;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   734
        case ENCODING_UTF16LE: /* RFC 2781 */
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   735
            {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   736
                Uint8 *p = (Uint8 *) dst;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   737
                if (ch > 0x10FFFF) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   738
                    ch = UNKNOWN_UNICODE;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   739
                }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   740
                if (ch < 0x10000) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   741
                    if (dstlen < 2) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   742
                        return SDL_ICONV_E2BIG;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   743
                    }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   744
                    p[1] = (Uint8) (ch >> 8);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   745
                    p[0] = (Uint8) ch;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   746
                    dst += 2;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   747
                    dstlen -= 2;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   748
                } else {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   749
                    Uint16 W1, W2;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   750
                    if (dstlen < 4) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   751
                        return SDL_ICONV_E2BIG;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   752
                    }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   753
                    ch = ch - 0x10000;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   754
                    W1 = 0xD800 | (Uint16) ((ch >> 10) & 0x3FF);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   755
                    W2 = 0xDC00 | (Uint16) (ch & 0x3FF);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   756
                    p[1] = (Uint8) (W1 >> 8);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   757
                    p[0] = (Uint8) W1;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   758
                    p[3] = (Uint8) (W2 >> 8);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   759
                    p[2] = (Uint8) W2;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   760
                    dst += 4;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   761
                    dstlen -= 4;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   762
                }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   763
            }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   764
            break;
6610
4032f8efdfe7 It turns out that UCS2 and UCS4 are defined as big-endian encodings
Sam Lantinga <slouken@libsdl.org>
parents: 6138
diff changeset
   765
        case ENCODING_UCS2BE:
4032f8efdfe7 It turns out that UCS2 and UCS4 are defined as big-endian encodings
Sam Lantinga <slouken@libsdl.org>
parents: 6138
diff changeset
   766
            {
4032f8efdfe7 It turns out that UCS2 and UCS4 are defined as big-endian encodings
Sam Lantinga <slouken@libsdl.org>
parents: 6138
diff changeset
   767
                Uint8 *p = (Uint8 *) dst;
4032f8efdfe7 It turns out that UCS2 and UCS4 are defined as big-endian encodings
Sam Lantinga <slouken@libsdl.org>
parents: 6138
diff changeset
   768
                if (ch > 0xFFFF) {
4032f8efdfe7 It turns out that UCS2 and UCS4 are defined as big-endian encodings
Sam Lantinga <slouken@libsdl.org>
parents: 6138
diff changeset
   769
                    ch = UNKNOWN_UNICODE;
4032f8efdfe7 It turns out that UCS2 and UCS4 are defined as big-endian encodings
Sam Lantinga <slouken@libsdl.org>
parents: 6138
diff changeset
   770
                }
4032f8efdfe7 It turns out that UCS2 and UCS4 are defined as big-endian encodings
Sam Lantinga <slouken@libsdl.org>
parents: 6138
diff changeset
   771
                if (dstlen < 2) {
4032f8efdfe7 It turns out that UCS2 and UCS4 are defined as big-endian encodings
Sam Lantinga <slouken@libsdl.org>
parents: 6138
diff changeset
   772
                    return SDL_ICONV_E2BIG;
4032f8efdfe7 It turns out that UCS2 and UCS4 are defined as big-endian encodings
Sam Lantinga <slouken@libsdl.org>
parents: 6138
diff changeset
   773
                }
4032f8efdfe7 It turns out that UCS2 and UCS4 are defined as big-endian encodings
Sam Lantinga <slouken@libsdl.org>
parents: 6138
diff changeset
   774
                p[0] = (Uint8) (ch >> 8);
4032f8efdfe7 It turns out that UCS2 and UCS4 are defined as big-endian encodings
Sam Lantinga <slouken@libsdl.org>
parents: 6138
diff changeset
   775
                p[1] = (Uint8) ch;
4032f8efdfe7 It turns out that UCS2 and UCS4 are defined as big-endian encodings
Sam Lantinga <slouken@libsdl.org>
parents: 6138
diff changeset
   776
                dst += 2;
4032f8efdfe7 It turns out that UCS2 and UCS4 are defined as big-endian encodings
Sam Lantinga <slouken@libsdl.org>
parents: 6138
diff changeset
   777
                dstlen -= 2;
4032f8efdfe7 It turns out that UCS2 and UCS4 are defined as big-endian encodings
Sam Lantinga <slouken@libsdl.org>
parents: 6138
diff changeset
   778
            }
4032f8efdfe7 It turns out that UCS2 and UCS4 are defined as big-endian encodings
Sam Lantinga <slouken@libsdl.org>
parents: 6138
diff changeset
   779
            break;
4032f8efdfe7 It turns out that UCS2 and UCS4 are defined as big-endian encodings
Sam Lantinga <slouken@libsdl.org>
parents: 6138
diff changeset
   780
        case ENCODING_UCS2LE:
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   781
            {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   782
                Uint8 *p = (Uint8 *) dst;
6610
4032f8efdfe7 It turns out that UCS2 and UCS4 are defined as big-endian encodings
Sam Lantinga <slouken@libsdl.org>
parents: 6138
diff changeset
   783
                if (ch > 0xFFFF) {
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   784
                    ch = UNKNOWN_UNICODE;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   785
                }
6610
4032f8efdfe7 It turns out that UCS2 and UCS4 are defined as big-endian encodings
Sam Lantinga <slouken@libsdl.org>
parents: 6138
diff changeset
   786
                if (dstlen < 2) {
4032f8efdfe7 It turns out that UCS2 and UCS4 are defined as big-endian encodings
Sam Lantinga <slouken@libsdl.org>
parents: 6138
diff changeset
   787
                    return SDL_ICONV_E2BIG;
4032f8efdfe7 It turns out that UCS2 and UCS4 are defined as big-endian encodings
Sam Lantinga <slouken@libsdl.org>
parents: 6138
diff changeset
   788
                }
4032f8efdfe7 It turns out that UCS2 and UCS4 are defined as big-endian encodings
Sam Lantinga <slouken@libsdl.org>
parents: 6138
diff changeset
   789
                p[1] = (Uint8) (ch >> 8);
4032f8efdfe7 It turns out that UCS2 and UCS4 are defined as big-endian encodings
Sam Lantinga <slouken@libsdl.org>
parents: 6138
diff changeset
   790
                p[0] = (Uint8) ch;
4032f8efdfe7 It turns out that UCS2 and UCS4 are defined as big-endian encodings
Sam Lantinga <slouken@libsdl.org>
parents: 6138
diff changeset
   791
                dst += 2;
4032f8efdfe7 It turns out that UCS2 and UCS4 are defined as big-endian encodings
Sam Lantinga <slouken@libsdl.org>
parents: 6138
diff changeset
   792
                dstlen -= 2;
4032f8efdfe7 It turns out that UCS2 and UCS4 are defined as big-endian encodings
Sam Lantinga <slouken@libsdl.org>
parents: 6138
diff changeset
   793
            }
4032f8efdfe7 It turns out that UCS2 and UCS4 are defined as big-endian encodings
Sam Lantinga <slouken@libsdl.org>
parents: 6138
diff changeset
   794
            break;
4032f8efdfe7 It turns out that UCS2 and UCS4 are defined as big-endian encodings
Sam Lantinga <slouken@libsdl.org>
parents: 6138
diff changeset
   795
        case ENCODING_UTF32BE:
4032f8efdfe7 It turns out that UCS2 and UCS4 are defined as big-endian encodings
Sam Lantinga <slouken@libsdl.org>
parents: 6138
diff changeset
   796
            if (ch > 0x10FFFF) {
4032f8efdfe7 It turns out that UCS2 and UCS4 are defined as big-endian encodings
Sam Lantinga <slouken@libsdl.org>
parents: 6138
diff changeset
   797
                ch = UNKNOWN_UNICODE;
4032f8efdfe7 It turns out that UCS2 and UCS4 are defined as big-endian encodings
Sam Lantinga <slouken@libsdl.org>
parents: 6138
diff changeset
   798
            }
4032f8efdfe7 It turns out that UCS2 and UCS4 are defined as big-endian encodings
Sam Lantinga <slouken@libsdl.org>
parents: 6138
diff changeset
   799
        case ENCODING_UCS4BE:
4032f8efdfe7 It turns out that UCS2 and UCS4 are defined as big-endian encodings
Sam Lantinga <slouken@libsdl.org>
parents: 6138
diff changeset
   800
            if (ch > 0x7FFFFFFF) {
4032f8efdfe7 It turns out that UCS2 and UCS4 are defined as big-endian encodings
Sam Lantinga <slouken@libsdl.org>
parents: 6138
diff changeset
   801
                ch = UNKNOWN_UNICODE;
4032f8efdfe7 It turns out that UCS2 and UCS4 are defined as big-endian encodings
Sam Lantinga <slouken@libsdl.org>
parents: 6138
diff changeset
   802
            }
4032f8efdfe7 It turns out that UCS2 and UCS4 are defined as big-endian encodings
Sam Lantinga <slouken@libsdl.org>
parents: 6138
diff changeset
   803
            {
4032f8efdfe7 It turns out that UCS2 and UCS4 are defined as big-endian encodings
Sam Lantinga <slouken@libsdl.org>
parents: 6138
diff changeset
   804
                Uint8 *p = (Uint8 *) dst;
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   805
                if (dstlen < 4) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   806
                    return SDL_ICONV_E2BIG;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   807
                }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   808
                p[0] = (Uint8) (ch >> 24);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   809
                p[1] = (Uint8) (ch >> 16);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   810
                p[2] = (Uint8) (ch >> 8);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   811
                p[3] = (Uint8) ch;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   812
                dst += 4;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   813
                dstlen -= 4;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   814
            }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   815
            break;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   816
        case ENCODING_UTF32LE:
6610
4032f8efdfe7 It turns out that UCS2 and UCS4 are defined as big-endian encodings
Sam Lantinga <slouken@libsdl.org>
parents: 6138
diff changeset
   817
            if (ch > 0x10FFFF) {
4032f8efdfe7 It turns out that UCS2 and UCS4 are defined as big-endian encodings
Sam Lantinga <slouken@libsdl.org>
parents: 6138
diff changeset
   818
                ch = UNKNOWN_UNICODE;
4032f8efdfe7 It turns out that UCS2 and UCS4 are defined as big-endian encodings
Sam Lantinga <slouken@libsdl.org>
parents: 6138
diff changeset
   819
            }
4032f8efdfe7 It turns out that UCS2 and UCS4 are defined as big-endian encodings
Sam Lantinga <slouken@libsdl.org>
parents: 6138
diff changeset
   820
        case ENCODING_UCS4LE:
4032f8efdfe7 It turns out that UCS2 and UCS4 are defined as big-endian encodings
Sam Lantinga <slouken@libsdl.org>
parents: 6138
diff changeset
   821
            if (ch > 0x7FFFFFFF) {
4032f8efdfe7 It turns out that UCS2 and UCS4 are defined as big-endian encodings
Sam Lantinga <slouken@libsdl.org>
parents: 6138
diff changeset
   822
                ch = UNKNOWN_UNICODE;
4032f8efdfe7 It turns out that UCS2 and UCS4 are defined as big-endian encodings
Sam Lantinga <slouken@libsdl.org>
parents: 6138
diff changeset
   823
            }
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   824
            {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   825
                Uint8 *p = (Uint8 *) dst;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   826
                if (dstlen < 4) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   827
                    return SDL_ICONV_E2BIG;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   828
                }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   829
                p[3] = (Uint8) (ch >> 24);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   830
                p[2] = (Uint8) (ch >> 16);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   831
                p[1] = (Uint8) (ch >> 8);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   832
                p[0] = (Uint8) ch;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   833
                dst += 4;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   834
                dstlen -= 4;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   835
            }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   836
            break;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   837
        }
1501
73dc5d39bbf8 Added UTF-8 <-> UTF-16 <-> UTF-32 <-> UCS-2 <-> UCS-4 conversion capability
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   838
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   839
        /* Update state */
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   840
        *inbuf = src;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   841
        *inbytesleft = srclen;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   842
        *outbuf = dst;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   843
        *outbytesleft = dstlen;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   844
        ++total;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   845
    }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   846
    return total;
1501
73dc5d39bbf8 Added UTF-8 <-> UTF-16 <-> UTF-32 <-> UCS-2 <-> UCS-4 conversion capability
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   847
}
73dc5d39bbf8 Added UTF-8 <-> UTF-16 <-> UTF-32 <-> UCS-2 <-> UCS-4 conversion capability
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   848
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   849
int
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   850
SDL_iconv_close(SDL_iconv_t cd)
1501
73dc5d39bbf8 Added UTF-8 <-> UTF-16 <-> UTF-32 <-> UCS-2 <-> UCS-4 conversion capability
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   851
{
7719
31b5f9ff36ca Christoph Mallon: Remove pointless if (x) before SDL_free(x)
Sam Lantinga <slouken@libsdl.org>
parents: 7349
diff changeset
   852
    if (cd != (SDL_iconv_t)-1) {
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   853
        SDL_free(cd);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   854
    }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   855
    return 0;
1501
73dc5d39bbf8 Added UTF-8 <-> UTF-16 <-> UTF-32 <-> UCS-2 <-> UCS-4 conversion capability
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   856
}
73dc5d39bbf8 Added UTF-8 <-> UTF-16 <-> UTF-32 <-> UCS-2 <-> UCS-4 conversion capability
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   857
73dc5d39bbf8 Added UTF-8 <-> UTF-16 <-> UTF-32 <-> UCS-2 <-> UCS-4 conversion capability
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   858
#endif /* !HAVE_ICONV */
73dc5d39bbf8 Added UTF-8 <-> UTF-16 <-> UTF-32 <-> UCS-2 <-> UCS-4 conversion capability
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   859
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   860
char *
2135
0313af081a84 Merge iconv const changes from 1.2
Sam Lantinga <slouken@libsdl.org>
parents: 1895
diff changeset
   861
SDL_iconv_string(const char *tocode, const char *fromcode, const char *inbuf,
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   862
                 size_t inbytesleft)
1501
73dc5d39bbf8 Added UTF-8 <-> UTF-16 <-> UTF-32 <-> UCS-2 <-> UCS-4 conversion capability
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   863
{
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   864
    SDL_iconv_t cd;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   865
    char *string;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   866
    size_t stringsize;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   867
    char *outbuf;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   868
    size_t outbytesleft;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   869
    size_t retCode = 0;
1501
73dc5d39bbf8 Added UTF-8 <-> UTF-16 <-> UTF-32 <-> UCS-2 <-> UCS-4 conversion capability
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   870
2182
cc2597da0840 Fixed bug #455
Sam Lantinga <slouken@libsdl.org>
parents: 2143
diff changeset
   871
    cd = SDL_iconv_open(tocode, fromcode);
cc2597da0840 Fixed bug #455
Sam Lantinga <slouken@libsdl.org>
parents: 2143
diff changeset
   872
    if (cd == (SDL_iconv_t) - 1) {
cc2597da0840 Fixed bug #455
Sam Lantinga <slouken@libsdl.org>
parents: 2143
diff changeset
   873
        /* See if we can recover here (fixes iconv on Solaris 11) */
cc2597da0840 Fixed bug #455
Sam Lantinga <slouken@libsdl.org>
parents: 2143
diff changeset
   874
        if (!tocode || !*tocode) {
cc2597da0840 Fixed bug #455
Sam Lantinga <slouken@libsdl.org>
parents: 2143
diff changeset
   875
            tocode = "UTF-8";
cc2597da0840 Fixed bug #455
Sam Lantinga <slouken@libsdl.org>
parents: 2143
diff changeset
   876
        }
cc2597da0840 Fixed bug #455
Sam Lantinga <slouken@libsdl.org>
parents: 2143
diff changeset
   877
        if (!fromcode || !*fromcode) {
3320
b225c8a7896e Fixed bug #797
Sam Lantinga <slouken@libsdl.org>
parents: 2859
diff changeset
   878
            fromcode = "UTF-8";
2182
cc2597da0840 Fixed bug #455
Sam Lantinga <slouken@libsdl.org>
parents: 2143
diff changeset
   879
        }
cc2597da0840 Fixed bug #455
Sam Lantinga <slouken@libsdl.org>
parents: 2143
diff changeset
   880
        cd = SDL_iconv_open(tocode, fromcode);
2143
e906da4414a3 Fix for bug #447 merged from SDL 1.2
Sam Lantinga <slouken@libsdl.org>
parents: 2142
diff changeset
   881
    }
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   882
    if (cd == (SDL_iconv_t) - 1) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   883
        return NULL;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   884
    }
1501
73dc5d39bbf8 Added UTF-8 <-> UTF-16 <-> UTF-32 <-> UCS-2 <-> UCS-4 conversion capability
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   885
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   886
    stringsize = inbytesleft > 4 ? inbytesleft : 4;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   887
    string = SDL_malloc(stringsize);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   888
    if (!string) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   889
        SDL_iconv_close(cd);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   890
        return NULL;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   891
    }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   892
    outbuf = string;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   893
    outbytesleft = stringsize;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   894
    SDL_memset(outbuf, 0, 4);
1501
73dc5d39bbf8 Added UTF-8 <-> UTF-16 <-> UTF-32 <-> UCS-2 <-> UCS-4 conversion capability
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   895
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   896
    while (inbytesleft > 0) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   897
        retCode = SDL_iconv(cd, &inbuf, &inbytesleft, &outbuf, &outbytesleft);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   898
        switch (retCode) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   899
        case SDL_ICONV_E2BIG:
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   900
            {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   901
                char *oldstring = string;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   902
                stringsize *= 2;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   903
                string = SDL_realloc(string, stringsize);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   904
                if (!string) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   905
                    SDL_iconv_close(cd);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   906
                    return NULL;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   907
                }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   908
                outbuf = string + (outbuf - oldstring);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   909
                outbytesleft = stringsize - (outbuf - string);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   910
                SDL_memset(outbuf, 0, 4);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   911
            }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   912
            break;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   913
        case SDL_ICONV_EILSEQ:
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   914
            /* Try skipping some input data - not perfect, but... */
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   915
            ++inbuf;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   916
            --inbytesleft;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   917
            break;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   918
        case SDL_ICONV_EINVAL:
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   919
        case SDL_ICONV_ERROR:
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   920
            /* We can't continue... */
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   921
            inbytesleft = 0;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   922
            break;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   923
        }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   924
    }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   925
    SDL_iconv_close(cd);
1501
73dc5d39bbf8 Added UTF-8 <-> UTF-16 <-> UTF-32 <-> UCS-2 <-> UCS-4 conversion capability
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   926
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   927
    return string;
1501
73dc5d39bbf8 Added UTF-8 <-> UTF-16 <-> UTF-32 <-> UCS-2 <-> UCS-4 conversion capability
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   928
}
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   929
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1849
diff changeset
   930
/* vi: set ts=4 sw=4 expandtab: */