unsigned char *read_archive(struct archive *zip, const char *filename, int *sizep)
{
int l = 0;
int r = zip->count - 1;
while (l <= r) {
int m = (l + r) >> 1;
int c = strcmp(filename, zip->table[m].name);
if (c < 0)
r = m - 1;
else if (c > 0)
l = m + 1;
else
return read_zip_file(zip->file, zip->table[m].offset, sizep);
}
return NULL;
}
/* Generic compressed file loader.
* Extracts to buf, unless optional_filename != 0
* Then extracts to optional_filename and leaves buf alone.
*/
int read_compressed_file(const char * path, void **buf,
const char* optional_filename, ssize_t *length)
{
const char* file_ext = NULL;
char *archive_found = NULL;
char archive_path[PATH_MAX_LENGTH] = {0};
if (optional_filename)
{
/* Safety check. * If optional_filename and optional_filename
* exists, we simply return 0,
* hoping that optional_filename is the
* same as requested.
*/
if(path_file_exists(optional_filename))
{
*length = 0;
return 1;
}
}
/* We split carchive path and relative path: */
strlcpy(archive_path, path, sizeof(archive_path));
archive_found = (char*)strchr(archive_path,'#');
rarch_assert(archive_found != NULL);
/* We assure that there is something after the '#' symbol. */
if (strlen(archive_found) <= 1)
{
/*
* This error condition happens for example, when
* path = /path/to/file.7z, or
* path = /path/to/file.7z#
*/
RARCH_ERR("Could not extract image path and carchive path from "
"path: %s.\n", path);
*length = 0;
return 0;
}
/* We split the string in two, by putting a \0, where the hash was: */
*archive_found = '\0';
archive_found += 1;
file_ext = path_get_extension(archive_path);
#ifdef HAVE_7ZIP
if (strcasecmp(file_ext,"7z") == 0)
{
*length = read_7zip_file(archive_path,archive_found,buf,optional_filename);
if (*length != -1)
return 1;
}
#endif
#ifdef HAVE_ZLIB
if (strcasecmp(file_ext,"zip") == 0)
{
*length = read_zip_file(archive_path,archive_found,buf,optional_filename);
if (*length != -1)
return 1;
}
#endif
return 0;
}
