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Create zlib_parse_file_iterate

This commit is contained in:
twinaphex 2015-05-27 01:03:49 +02:00
parent 376a1d49ba
commit 3d924a7556
2 changed files with 53 additions and 31 deletions
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80
libretro-common/file/file_extract.c
View File

@ -499,7 +499,8 @@ typedef struct zlib_transfer
const struct zlib_file_backend *backend;
} zlib_transfer_t;
int zlib_parse_file_iterate(zlib_transfer_t *state, char *filename,
int zlib_parse_file_iterate_step_internal(
zlib_transfer_t *state, char *filename,
const uint8_t **cdata,
unsigned *cmode, uint32_t *size, uint32_t *csize,
uint32_t *checksum, unsigned *payback)
@ -547,7 +548,7 @@ int zlib_parse_file_iterate_step(zlib_transfer_t *state,
unsigned cmode = 0;
unsigned payload = 0;
char filename[PATH_MAX_LENGTH] = {0};
int ret = zlib_parse_file_iterate(state, filename, &cdata, &cmode, &size, &csize,
int ret = zlib_parse_file_iterate_step_internal(state, filename, &cdata, &cmode, &size, &csize,
&checksum, &payload);
if (ret != 1)
@ -603,6 +604,49 @@ int zlib_parse_file_init(zlib_transfer_t *state,
return 0;
}
int zlib_parse_file_iterate(void *data, bool *returnerr, const char *file,
const char *valid_exts, zlib_file_cb file_cb, void *userdata)
{
zlib_transfer_t *state = (zlib_transfer_t*)data;
if (!state)
return -1;
switch (state->type)
{
case ZLIB_TRANSFER_NONE:
break;
case ZLIB_TRANSFER_INIT:
if (zlib_parse_file_init(state, file) == 0)
state->type = ZLIB_TRANSFER_ITERATE;
else
state->type = ZLIB_TRANSFER_DEINIT_ERROR;
break;
case ZLIB_TRANSFER_ITERATE:
{
int ret2 = zlib_parse_file_iterate_step(state,
valid_exts, userdata, file_cb);
if (ret2 != 1)
state->type = ZLIB_TRANSFER_DEINIT;
if (ret2 == -1)
state->type = ZLIB_TRANSFER_DEINIT_ERROR;
}
break;
case ZLIB_TRANSFER_DEINIT_ERROR:
*returnerr = false;
case ZLIB_TRANSFER_DEINIT:
if (state->handle)
state->backend->free(state->handle);
break;
}
if (state->type == ZLIB_TRANSFER_DEINIT ||
state->type == ZLIB_TRANSFER_DEINIT_ERROR)
return -1;
return 0;
}
/**
* zlib_parse_file:
* @file : filename path of archive
@ -626,36 +670,10 @@ bool zlib_parse_file(const char *file, const char *valid_exts,
for (;;)
{
switch (state.type)
{
case ZLIB_TRANSFER_NONE:
break;
case ZLIB_TRANSFER_INIT:
if (zlib_parse_file_init(&state, file) == 0)
state.type = ZLIB_TRANSFER_ITERATE;
else
state.type = ZLIB_TRANSFER_DEINIT_ERROR;
break;
case ZLIB_TRANSFER_ITERATE:
{
int ret2 = zlib_parse_file_iterate_step(&state,
valid_exts, userdata, file_cb);
if (ret2 != 1)
state.type = ZLIB_TRANSFER_DEINIT;
if (ret2 == -1)
state.type = ZLIB_TRANSFER_DEINIT_ERROR;
}
break;
case ZLIB_TRANSFER_DEINIT_ERROR:
returnerr = false;
case ZLIB_TRANSFER_DEINIT:
if (state.handle)
state.backend->free(state.handle);
break;
}
int ret = zlib_parse_file_iterate(&state, &returnerr, file,
valid_exts, file_cb, userdata);
if (state.type == ZLIB_TRANSFER_DEINIT ||
state.type == ZLIB_TRANSFER_DEINIT_ERROR)
if (ret != 0)
break;
}

4
libretro-common/include/file/file_extract.h
View File

@ -59,6 +59,10 @@ uint32_t zlib_crc32_adjust(uint32_t crc, uint8_t data);
bool zlib_parse_file(const char *file, const char *valid_exts,
zlib_file_cb file_cb, void *userdata);
int zlib_parse_file_iterate(void *data, bool *returnerr,
const char *file,
const char *valid_exts, zlib_file_cb file_cb, void *userdata);
/**
* zlib_extract_first_content_file:
* @zip_path : filename path to ZIP archive.