static const zip_file_header *zip_file_seek_file(zip_file *zip, const char *filename)
{
const zip_file_header *header;
char *new_filename;
int i;
// we need to change filename; allocate a copy
new_filename = (char*)malloc(strlen(filename) + 1);
if (!new_filename)
return NULL;
// change all backslashes to forward slashes
for (i = 0; filename[i]; i++)
new_filename[i] = (filename[i] != '\\') ? filename[i] : '/';
new_filename[i] = '\0';
// find the entry
header = zip_file_first_file(zip);
while(header && mame_stricmp(header->filename, new_filename))
{
header = zip_file_next_file(zip);
}
free(new_filename);
return header;
}
static BOOL SoftwarePicker_InternalAddFile(HWND hwndPicker, LPCSTR pszFilename,
BOOL bForce)
{
LPCSTR s;
BOOL rc = TRUE;
zip_error ziperr;
zip_file *pZip;
const zip_file_header *pZipEnt;
s = strrchr(pszFilename, '.');
if (s && !mame_stricmp(s, ".zip"))
{
ziperr = zip_file_open(pszFilename, &pZip);
if (ziperr == ZIPERR_NONE)
{
pZipEnt = zip_file_first_file(pZip);
while(rc && pZipEnt)
{
rc = SoftwarePicker_AddZipEntFile(hwndPicker, pszFilename,
bForce, pZip, pZipEnt);
pZipEnt = zip_file_next_file(pZip);
}
zip_file_close(pZip);
}
}
else
{
rc = SoftwarePicker_AddFileEntry(hwndPicker, pszFilename, 0, 0, bForce);
}
return rc;
}
static imgtool_stream *stream_open_zip(const char *zipname, const char *subname, int read_or_write)
{
imgtool_stream *imgfile = NULL;
// zip_error ziperr;
zip_file *z = NULL;
const zip_file_header *zipent;
FILE *f;
if (read_or_write)
goto error;
/* check to see if the file exists */
f = fopen(zipname, "r");
if (!f)
goto error;
fclose(f);
imgfile = (imgtool_stream *)malloc(sizeof(imgtool_stream));
if (!imgfile)
goto error;
memset(imgfile, 0, sizeof(*imgfile));
imgfile->imgtype = IMG_MEM;
imgfile->write_protect = 1;
imgfile->position = 0;
// ziperr =
zip_file_open(zipname, &z);
if (!z)
goto error;
zipent = zip_file_first_file(z);
while(zipent && subname && strcmp(subname, zipent->filename))
zipent = zip_file_next_file(z);
if (!zipent)
goto error;
imgfile->filesize = zipent->uncompressed_length;
imgfile->u.buffer = (UINT8*)malloc(zipent->uncompressed_length);
if (!imgfile->u.buffer)
goto error;
if (zip_file_decompress(z, imgfile->u.buffer, zipent->uncompressed_length))
goto error;
zip_file_close(z);
return imgfile;
error:
if (z)
zip_file_close(z);
if (imgfile)
{
if (imgfile->u.buffer)
free(imgfile->u.buffer);
free(imgfile);
}
return NULL;
}
static void romident(const char *filename, romident_status *status)
{
osd_directory *directory;
/* reset the status */
memset(status, 0, sizeof(*status));
/* first try to open as a directory */
directory = osd_opendir(filename);
if (directory != NULL)
{
const osd_directory_entry *entry;
/* iterate over all files in the directory */
while ((entry = osd_readdir(directory)) != NULL)
if (entry->type == ENTTYPE_FILE)
{
astring *curfile = astring_assemble_3(astring_alloc(), filename, PATH_SEPARATOR, entry->name);
identify_file(astring_c(curfile), status);
astring_free(curfile);
}
osd_closedir(directory);
}
/* if that failed, and the filename ends with .zip, identify as a ZIP file */
else if (core_filename_ends_with(filename, ".zip"))
{
/* first attempt to examine it as a valid ZIP file */
zip_file *zip = NULL;
zip_error ziperr = zip_file_open(filename, &zip);
if (ziperr == ZIPERR_NONE && zip != NULL)
{
const zip_file_header *entry;
/* loop over entries in the ZIP, skipping empty files and directories */
for (entry = zip_file_first_file(zip); entry; entry = zip_file_next_file(zip))
if (entry->uncompressed_length != 0)
{
UINT8 *data = (UINT8 *)malloc(entry->uncompressed_length);
if (data != NULL)
{
/* decompress data into RAM and identify it */
ziperr = zip_file_decompress(zip, data, entry->uncompressed_length);
if (ziperr == ZIPERR_NONE)
identify_data(entry->filename, data, entry->uncompressed_length, status);
free(data);
}
}
/* close up */
zip_file_close(zip);
}
}
/* otherwise, identify as a raw file */
else
identify_file(filename, status);
}
static const zip_file_header *find_file(zip_file *zip, const char *filename)
{
const zip_file_header *header;
for (header = zip_file_first_file(zip); header != NULL; header = zip_file_next_file(zip))
{
if (!core_stricmp(header->filename, filename))
return header;
}
return NULL;
}
static const zip_file_header *zippath_find_sub_path(zip_file *zipfile, const char *subpath, osd_dir_entry_type *type)
{
int i, j;
char c1, c2, last_char;
const zip_file_header *header;
for (header = zip_file_first_file(zipfile); header != NULL; header = zip_file_next_file(zipfile))
{
/* special case */
if (subpath == NULL)
{
if (type != NULL)
*type = ENTTYPE_FILE;
return header;
}
i = 0;
j = 0;
last_char = '/';
while(((c1 = next_path_char(header->filename, &i)) == (c2 = next_path_char(subpath, &j))) &&
( c1 != '\0' && c2 != '\0' ))
last_char = c2;
if (c2 == '\0')
{
if (c1 == '\0')
{
if (type != NULL)
*type = ENTTYPE_FILE;
return header;
}
else if ((last_char == '/') || (c1 == '/'))
{
if (type != NULL)
*type = ENTTYPE_DIR;
return header;
}
}
}
if (type != NULL)
*type = ENTTYPE_NONE;
return NULL;
}
static const zip_file_header *find_file_crc(zip_file *zip, const char *filename, UINT32 crc)
{
const zip_file_header *header;
for (header = zip_file_first_file(zip); header != NULL; header = zip_file_next_file(zip))
{
// if the CRC and name both match, we're good
// if the CRC matches and the name doesn't, we're still good
if ((!core_stricmp(header->filename, filename)) && (header->crc == crc))
{
return header;
}
else if (header->crc == crc)
{
return header;
}
}
return NULL;
}
static imgtool_stream *stream_open_zip(const char *zipname, const char *subname, int read_or_write)
{
if (read_or_write)
return nullptr;
/* check to see if the file exists */
FILE *f = fopen(zipname, "r");
if (!f)
return nullptr;
fclose(f);
imgtool_stream::ptr imgfile(new imgtool_stream(true));
imgfile->imgtype = IMG_MEM;
zip_file *z = nullptr;
const zip_file_header *zipent = nullptr;
zip_file_open(zipname, &z);
if (!z)
goto error;
zipent = zip_file_first_file(z);
while (zipent && subname && strcmp(subname, zipent->filename))
zipent = zip_file_next_file(z);
if (!zipent)
goto error;
imgfile->filesize = zipent->uncompressed_length;
imgfile->buffer = reinterpret_cast<std::uint8_t *>(malloc(zipent->uncompressed_length));
if (!imgfile->buffer)
goto error;
if (zip_file_decompress(z, imgfile->buffer, zipent->uncompressed_length))
goto error;
zip_file_close(z);
return imgfile.release();
error:
if (z)
zip_file_close(z);
return nullptr;
}
file_error emu_file::attempt_zipped()
{
astring filename;
// loop over directory parts up to the start of filename
while (1)
{
// find the final path separator
int dirsep = m_fullpath.rchr(0, PATH_SEPARATOR[0]);
if (dirsep == -1)
return FILERR_NOT_FOUND;
// insert the part from the right of the separator into the head of the filename
if (filename.len() > 0)
filename.ins(0, "/");
filename.inssubstr(0, m_fullpath, dirsep + 1, -1);
// remove this part of the filename and append a .zip extension
m_fullpath.substr(0, dirsep).cat(".zip");
// attempt to open the ZIP file
zip_file *zip;
zip_error ziperr = zip_file_open(m_fullpath, &zip);
// chop the .zip back off the filename before continuing
m_fullpath.substr(0, dirsep);
// if we failed to open this file, continue scanning
if (ziperr != ZIPERR_NONE)
continue;
// see if we can find a file with the right name and (if available) crc
const zip_file_header *header;
for (header = zip_file_first_file(zip); header != NULL; header = zip_file_next_file(zip))
if (zip_filename_match(*header, filename) && (!(m_openflags & OPEN_FLAG_HAS_CRC) || header->crc == m_crc))
break;
// if that failed, look for a file with the right crc, but the wrong filename
if (header == NULL && (m_openflags & OPEN_FLAG_HAS_CRC))
for (header = zip_file_first_file(zip); header != NULL; header = zip_file_next_file(zip))
if (header->crc == m_crc && !zip_header_is_path(*header))
break;
// if that failed, look for a file with the right name; reporting a bad checksum
// is more helpful and less confusing than reporting "rom not found"
if (header == NULL)
for (header = zip_file_first_file(zip); header != NULL; header = zip_file_next_file(zip))
if (zip_filename_match(*header, filename))
break;
// if we got it, read the data
if (header != NULL)
{
m_zipfile = zip;
m_ziplength = header->uncompressed_length;
// build a hash with just the CRC
m_hashes.reset();
m_hashes.add_crc(header->crc);
return (m_openflags & OPEN_FLAG_NO_PRELOAD) ? FILERR_NONE : load_zipped_file();
}
// close up the ZIP file and try the next level
zip_file_close(zip);
}
}
const osd_directory_entry *zippath_readdir(zippath_directory *directory)
{
const osd_directory_entry *result = NULL;
const zip_file_header *header;
const char *relpath;
const char *separator;
const char *s;
zippath_returned_directory *rdent;
if (!directory->returned_parent)
{
/* first thing's first - return parent directory */
directory->returned_parent = true;
memset(&directory->returned_entry, 0, sizeof(directory->returned_entry));
directory->returned_entry.name = "..";
directory->returned_entry.type = ENTTYPE_DIR;
result = &directory->returned_entry;
}
else if (directory->directory != NULL)
{
/* a normal directory read */
do
{
result = osd_readdir(directory->directory);
}
while((result != NULL) && (!strcmp(result->name, ".") || !strcmp(result->name, "..")));
/* special case - is this entry a ZIP file? if so we need to return it as a "directory" */
if ((result != NULL) && is_zip_file(result->name))
{
/* copy; but change the entry type */
directory->returned_entry = *result;
directory->returned_entry.type = ENTTYPE_DIR;
result = &directory->returned_entry;
}
}
else if (directory->zipfile != NULL)
{
do
{
/* a zip file read */
do
{
if (!directory->called_zip_first)
header = zip_file_first_file(directory->zipfile);
else
header = zip_file_next_file(directory->zipfile);
directory->called_zip_first = true;
relpath = NULL;
}
while((header != NULL) && ((relpath = get_relative_path(directory, header)) == NULL));
if (relpath != NULL)
{
/* we've found a ZIP entry; but this may be an entry deep within the target directory */
for (s = relpath; *s && !is_zip_file_separator(*s); s++)
;
separator = *s ? s : NULL;
if (separator != NULL)
{
/* a nested entry; loop through returned_dirlist to see if we've returned the parent directory */
for (rdent = directory->returned_dirlist; rdent != NULL; rdent = rdent->next)
{
if (!core_strnicmp(rdent->name.c_str(), relpath, separator - relpath))
break;
}
if (rdent == NULL)
{
/* we've found a new directory; add this to returned_dirlist */
rdent = new zippath_returned_directory;
rdent->next = directory->returned_dirlist;
rdent->name.assign(relpath, separator - relpath);
directory->returned_dirlist = rdent;
/* ...and return it */
memset(&directory->returned_entry, 0, sizeof(directory->returned_entry));
directory->returned_entry.name = rdent->name.c_str();
directory->returned_entry.type = ENTTYPE_DIR;
result = &directory->returned_entry;
}
}
else
{
/* a real file */
memset(&directory->returned_entry, 0, sizeof(directory->returned_entry));
directory->returned_entry.name = relpath;
directory->returned_entry.type = ENTTYPE_FILE;
directory->returned_entry.size = header->uncompressed_length;
result = &directory->returned_entry;
}
}
}
while((relpath != NULL) && (result == NULL));
}
return result;
}
static image_error_t load_zip_path(mess_image *image, const char *path)
{
image_error_t err = IMAGE_ERROR_FILENOTFOUND;
zip_file *zip = NULL;
zip_error ziperr;
const zip_file_header *header;
const char *zip_extension = ".zip";
char *path_copy;
const char *zip_entry;
void *ptr;
int pos;
/* create our own copy of the path */
path_copy = mame_strdup(path);
if (!path_copy)
{
err = IMAGE_ERROR_OUTOFMEMORY;
goto done;
}
/* loop through the path and try opening zip files */
ziperr = ZIPERR_FILE_ERROR;
zip_entry = NULL;
pos = strlen(path_copy);
while(pos > strlen(zip_extension))
{
/* is this a potential zip path? */
if ((path_copy[pos] == '\0') || !strncmp(&path_copy[pos], PATH_SEPARATOR, strlen(PATH_SEPARATOR)))
{
/* parse out the zip path */
if (path_copy[pos] == '\0')
{
/* no zip path */
zip_entry = NULL;
}
else
{
/* we are at a zip path */
path_copy[pos] = '\0';
zip_entry = &path_copy[pos + strlen(PATH_SEPARATOR)];
}
/* try to open the zip file */
ziperr = zip_file_open(path_copy, &zip);
if (ziperr != ZIPERR_FILE_ERROR)
break;
/* restore the path if we changed */
if (zip_entry)
path_copy[pos] = PATH_SEPARATOR[0];
}
pos--;
}
/* did we succeed in opening up a zip file? */
if (ziperr == ZIPERR_NONE)
{
/* iterate through the zip file */
header = zip_file_first_file(zip);
/* if we specified a zip partial path, find it */
if (zip_entry)
{
while(header)
{
if (!mame_stricmp(header->filename, zip_entry))
break;
header = zip_file_next_file(zip);
}
}
/* were we successful? */
if (header)
{
/* if no zip path was specified, we have to change the name */
if (!zip_entry)
{
/* use the first entry; tough part is we have to change the name */
err = set_image_filename(image, image->name, header->filename);
if (err)
goto done;
}
/* allocate space for this zip file */
ptr = image_malloc(image, header->uncompressed_length);
if (!ptr)
{
err = IMAGE_ERROR_OUTOFMEMORY;
goto done;
}
ziperr = zip_file_decompress(zip, ptr, header->uncompressed_length);
if (ziperr == ZIPERR_NONE)
{
/* success! */
err = IMAGE_ERROR_SUCCESS;
image->ptr = ptr;
image->length = header->uncompressed_length;
}
}
}
done:
if (path_copy)
free(path_copy);
if (zip)
zip_file_close(zip);
return err;
}
const zip_file_header *zip_file_first_file(zip_file *zip)
{
/* reset the position and go from there */
zip->cd_pos = 0;
return zip_file_next_file(zip);
}
