Added SDL_utf8strlcpy to copy at UTF-8 character boundaries.
Changed SDL_SendKeyboardText and SDL_SendEditingText to use SDL_utf8strlcpy.
--- a/include/SDL_stdinc.h Mon Jul 12 14:17:43 2010 -0400
+++ b/include/SDL_stdinc.h Tue Jul 13 15:05:45 2010 -0400
@@ -470,6 +470,9 @@
size_t maxlen);
#endif
+extern DECLSPEC size_t SDLCALL SDL_utf8strlcpy(char *dst, const char *src,
+ size_t dst_bytes);
+
#ifdef HAVE_STRLCAT
#define SDL_strlcat strlcat
#else
--- a/src/events/SDL_keyboard.c Mon Jul 12 14:17:43 2010 -0400
+++ b/src/events/SDL_keyboard.c Tue Jul 13 15:05:45 2010 -0400
@@ -766,7 +766,7 @@
SDL_Event event;
event.text.type = SDL_TEXTINPUT;
event.text.windowID = keyboard->focus ? keyboard->focus->id : 0;
- SDL_strlcpy(event.text.text, text, SDL_arraysize(event.text.text));
+ SDL_utf8strlcpy(event.text.text, text, SDL_arraysize(event.text.text));
event.text.windowID = keyboard->focus ? keyboard->focus->id : 0;
posted = (SDL_PushEvent(&event) > 0);
}
@@ -787,7 +787,7 @@
event.edit.windowID = keyboard->focus ? keyboard->focus->id : 0;
event.edit.start = start;
event.edit.length = length;
- SDL_strlcpy(event.edit.text, text, SDL_arraysize(event.edit.text));
+ SDL_utf8strlcpy(event.edit.text, text, SDL_arraysize(event.edit.text));
posted = (SDL_PushEvent(&event) > 0);
}
return (posted);
--- a/src/stdlib/SDL_string.c Mon Jul 12 14:17:43 2010 -0400
+++ b/src/stdlib/SDL_string.c Tue Jul 13 15:05:45 2010 -0400
@@ -29,6 +29,21 @@
#define SDL_isupperhex(X) (((X) >= 'A') && ((X) <= 'F'))
#define SDL_islowerhex(X) (((X) >= 'a') && ((X) <= 'f'))
+#define UTF8_IsLeadByte(c) ((c) >= 0xC0 && (c) <= 0xF4)
+#define UTF8_IsTrailingByte(c) ((c) >= 0x80 && (c) <= 0xBF)
+
+int UTF8_TrailingBytes(unsigned char c)
+{
+ if (c >= 0xC0 && c<= 0xDF)
+ return 1;
+ else if (c >= 0xE0 && c <= 0xEF)
+ return 2;
+ else if (c >= 0xF0 && c <= 0xF4)
+ return 3;
+ else
+ return 0;
+}
+
#if !defined(HAVE_SSCANF) || !defined(HAVE_STRTOL)
static size_t
SDL_ScanLong(const char *text, int radix, long *valuep)
@@ -362,6 +377,38 @@
}
#endif
+size_t SDL_utf8strlcpy(char *dst, const char *src, size_t dst_bytes)
+{
+ size_t src_bytes = SDL_strlen(src);
+ size_t bytes = SDL_min(src_bytes, dst_bytes - 1);
+ int i = 0;
+ char trailing_bytes = 0;
+ if (bytes)
+ {
+ unsigned char c = (unsigned char)src[bytes - 1];
+ if (UTF8_IsLeadByte(c))
+ --bytes;
+ else if (UTF8_IsTrailingByte(c))
+ {
+ for (i = bytes - 1; i != 0; --i)
+ {
+ c = (unsigned char)src[i];
+ trailing_bytes = UTF8_TrailingBytes(c);
+ if (trailing_bytes)
+ {
+ if (bytes - i != trailing_bytes + 1)
+ bytes = i;
+
+ break;
+ }
+ }
+ }
+ SDL_memcpy(dst, src, bytes);
+ }
+ dst[bytes] = '\0';
+ return bytes;
+}
+
#ifndef HAVE_STRLCAT
size_t
SDL_strlcat(char *dst, const char *src, size_t maxlen)