zip.c
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/*
* ZIP support routines for PhysicsFS.
*
* Please see the file LICENSE in the source's root directory.
*
* This file written by Ryan C. Gordon.
*/
#include <stdio.h>
#include <stdlib.h>
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#include <string.h>
#include <unistd.h>
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#include "physfs.h"
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#include "unzip.h"
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#define __PHYSICSFS_INTERNAL__
#include "physfs_internal.h"
#if (!defined PHYSFS_SUPPORTS_ZIP)
#error PHYSFS_SUPPORTS_ZIP must be defined.
#endif
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typedef struct
{
unzFile handle;
uLong totalEntries;
} ZIPinfo;
typedef struct
{
} ZIPfileinfo;
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extern const DirFunctions __PHYSFS_DirFunctions_ZIP;
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static const FileFunctions __PHYSFS_FileFunctions_ZIP;
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static int ZIP_read(FileHandle *handle, void *buffer,
unsigned int objSize, unsigned int objCount)
{
} /* ZIP_read */
static int ZIP_eof(FileHandle *handle)
{
} /* ZIP_eof */
static int ZIP_tell(FileHandle *handle)
{
} /* ZIP_tell */
static int ZIP_seek(FileHandle *handle, int offset)
{
} /* ZIP_seek */
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static int ZIP_fileLength(FileHandle *handle)
{
} /* ZIP_fileLength */
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static int ZIP_fileClose(FileHandle *handle)
{
} /* ZIP_fileClose */
static int ZIP_isArchive(const char *filename, int forWriting)
{
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int retval = 0;
unzFile unz = unzOpen(name);
unz_global_info global;
if (unz != NULL)
{
if (unzGetGlobalInfo(unz, &global) == UNZ_OK)
retval = 1;
unzClose(unz);
} /* if */
return(retval);
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} /* ZIP_isArchive */
static DirHandle *ZIP_openArchive(const char *name, int forWriting)
{
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unzFile unz = NULL;
DirHandle *retval = NULL;
unz_global_info global;
BAIL_IF_MACRO(forWriting, ERR_ARC_IS_READ_ONLY, NULL);
errno = 0;
BAIL_IF_MACRO(access(name, R_OK) != 0, strerror(errno), NULL);
retval = malloc(sizeof (DirHandle));
BAIL_IF_MACRO(retval == NULL, ERR_OUT_OF_MEMORY, NULL);
unz = unzOpen(name);
if ((unz == NULL) || (unzGetGlobalInfo(unz, &global) != UNZ_OK))
{
if (unz)
unzClose(unz);
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free(retval);
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BAIL_IF_MACRO(1, ERR_UNSUPPORTED_ARCHIVE, NULL);
} /* if */
retval->opaque = malloc(sizeof (ZIPinfo));
if (retval->opaque == NULL)
{
free(retval);
unzClose(unz);
BAIL_IF_MACRO(1, ERR_OUT_OF_MEMORY, NULL);
} /* if */
((ZIPinfo *) (retval->opaque))->handle = unz;
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((ZIPinfo *) (retval->opaque))->totalEntries = global.number_entry;
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return(retval);
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} /* ZIP_openArchive */
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static LinkedStringList *ZIP_enumerateFiles(DirHandle *h,
const char *dirname,
int omitSymLinks)
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ZIPinfo *zi = (ZIPinfo *) (h->opaque);
unzFile fh = zi->handle;
int i;
LinkedStringList *retval = NULL;
LinkedStringList *l = NULL;
LinkedStringList *prev = NULL;
char buffer[256];
char *d;
/* jump to first file entry... */
BAIL_IF_MACRO(unzGoToFirstFile(fh) != UNZ_OK, ERR_IO_ERROR, NULL);
i = strlen(dirname);
d = malloc(i + 1);
strcpy(d, dirname);
if ((i > 0) && (d[i - 1] == '/')) /* no trailing slash. */
d[i - 1] = '\0';
for (i = 0; i < zi->totalEntries; i++)
{
char *ptr;
unzGetCurrentFileInfo(fh, NULL, buf, sizeof (buf), NULL, 0, NULL, 0);
ptr = strrchr(p, '/'); /* !!! check this! */
if (ptr == NULL)
{
if (*d != '\0')
continue; /* not for this dir; skip it. */
ptr = buf;
else
{
*ptr = '\0';
ptr++;
if (strcmp(buf, d) != 0)
continue; /* not for this dir; skip it. */
} /* else */
l = (LinkedStringList *) malloc(sizeof (LinkedStringList));
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if (l == NULL)
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break;
l->str = (char *) malloc(strlen(ptr) + 1);
if (l->str == NULL)
{
free(l);
break;
} /* if */
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strcpy(l->str, ptr);
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if (retval == NULL)
retval = l;
else
prev->next = l;
prev = l;
l->next = NULL;
} /* for */
free(d);
return(retval);
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} /* ZIP_enumerateFiles */
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static int ZIP_exists(DirHandle *h, const char *name)
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{
} /* ZIP_exists */
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static int ZIP_isDirectory(DirHandle *h, const char *name)
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{
} /* ZIP_isDirectory */
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static int ZIP_isSymLink(DirHandle *h, const char *name)
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{
} /* ZIP_isSymLink */
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static FileHandle *ZIP_openRead(DirHandle *h, const char *filename)
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{
} /* ZIP_openRead */
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static void ZIP_dirClose(DirHandle *h)
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{
} /* ZIP_dirClose */
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static const FileFunctions __PHYSFS_FileFunctions_ZIP =
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ZIP_read, /* read() method */
NULL, /* write() method */
ZIP_eof, /* eof() method */
ZIP_tell, /* tell() method */
ZIP_seek, /* seek() method */
ZIP_fileLength, /* fileLength() method */
ZIP_fileClose /* fileClose() method */
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};
const DirFunctions __PHYSFS_DirFunctions_ZIP =
{
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ZIP_isArchive, /* isArchive() method */
ZIP_openArchive, /* openArchive() method */
ZIP_enumerateFiles, /* enumerateFiles() method */
ZIP_exists, /* exists() method */
ZIP_isDirectory, /* isDirectory() method */
ZIP_isSymLink, /* isSymLink() method */
ZIP_openRead, /* openRead() method */
NULL, /* openWrite() method */
NULL, /* openAppend() method */
NULL, /* remove() method */
NULL, /* mkdir() method */
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ZIP_dirClose /* dirClose() method */
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};
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const PHYSFS_ArchiveInfo __PHYSFS_ArchiveInfo_ZIP =
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{
"ZIP",
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"PkZip/WinZip/Info-Zip compatible",
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"Ryan C. Gordon (icculus@linuxgames.com)",
"http://www.icculus.org/~icculus/",
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};
/* end of zip.c ... */