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Initial work on ZIPfile support. Not complete. Not very pleased with …
…this

minizip library at this moment in time.  --ryan.
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icculus committed Jul 15, 2001
1 parent fe77666 commit 0ddd2b1f6d4b7b0243cba4c0aea5f23dee0e6deb
Showing with 119 additions and 0 deletions.
  1. +119 −0 archivers/zip.c
@@ -8,7 +8,11 @@

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include "physfs.h"
#include "unzip.h"


#define __PHYSICSFS_INTERNAL__
#include "physfs_internal.h"
@@ -17,6 +21,18 @@
#error PHYSFS_SUPPORTS_ZIP must be defined.
#endif


typedef struct
{
unzFile handle;
uLong totalEntries;
} ZIPinfo;

typedef struct
{
} ZIPfileinfo;


extern const DirFunctions __PHYSFS_DirFunctions_ZIP;
static const FileFunctions __PHYSFS_FileFunctions_ZIP;

@@ -54,16 +70,119 @@ static int ZIP_fileClose(FileHandle *handle)

static int ZIP_isArchive(const char *filename, int forWriting)
{
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);
} /* ZIP_isArchive */


static DirHandle *ZIP_openArchive(const char *name, int forWriting)
{
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);
free(retval);
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;
((ZIPinfo *) (retval->opaque))->totalEntries = global.number_entry;

return(retval);
} /* ZIP_openArchive */


static LinkedStringList *ZIP_enumerateFiles(DirHandle *h, const char *dirname)
{
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));
if (l != NULL)
break;

l->str = (char *) malloc(strlen(ptr) + 1);
if (l->str == NULL)
{
free(l);
break;
} /* if */

if (retval == NULL)
retval = l;
else
prev->next = l;

prev = l;
l->next = NULL;
} /* for */

free(d);
return(retval);
} /* ZIP_enumerateFiles */


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