//----------------------------------------------------------------//
int zipfs_fclose ( ZIPFSFILE* fp ) {
int result = 0;
if ( fp ) {
ZIPFSFile* file = ( ZIPFSFile* )fp;
result = ( file->mIsArchive ) ? ZIPFSZipStream_Close ( file->mPtr.mZip ) : fclose ( file->mPtr.mFile );
memset ( fp, 0, sizeof ( ZIPFSFile ));
free ( file );
}
return result;
}
//----------------------------------------------------------------//
ZIPFSZipStream* ZIPFSZipStream_Open ( ZIPFSZipFile* archive, const char* entryname ) {
int result;
FILE* file = 0;
ZIPFSZipStream* self = 0;
ZIPFSZipFileEntry* entry;
FileHeader fileHeader;
entry = ZIPFSZipFile_FindEntry ( archive, entryname );
if ( !entry ) goto error;
file = fopen ( archive->mFilename, "rb" );
if ( !file ) goto error;
self = ( ZIPFSZipStream* )calloc ( 1, sizeof ( ZIPFSZipStream ));
self->mFile = file;
self->mEntry = entry;
// finfo->entry = (( entry->symlink != NULL ) ? entry->symlink : entry );
// seek to the base of the zip file header
result = fseek ( file, entry->mFileHeaderAddr, SEEK_SET );
if ( result ) goto error;
// read local header
result = read_file_header ( file, &fileHeader );
if ( result ) goto error;
// sanity check
if ( fileHeader.mCrc32 != entry->mCrc32 ) goto error;
// skip the extra field, etc.
result = fseek ( file, fileHeader.mNameLength + fileHeader.mExtraFieldLength, SEEK_CUR );
if ( result ) goto error;
// this is the base address of the compressed file data
self->mBaseAddr = ftell ( file );
// looks like all systems are go, so time to set up the buffers (or not)
result = ( entry->mUncompressedSize <= ZIP_STREAM_BUFFER_MAX ) ? ZIPFSZipStream_FullyCache ( self ) : ZIPFSZipStream_InitBuffers ( self );
if ( result ) goto error;
return self;
error:
if ( self ) {
ZIPFSZipStream_Close ( self );
}
return 0;
}
//----------------------------------------------------------------//
ZIPFSFILE* zipfs_freopen ( const char* filename, const char* mode, ZIPFSFILE* fp ) {
ZIPFSFile* result = 0;
ZIPFSFile* file = ( ZIPFSFile* )fp;
ZIPFSVirtualPath* mount;
if ( !file ) return 0;
if ( file->mIsArchive ){
ZIPFSZipStream_Close ( file->mPtr.mZip );
}
else {
fclose ( file->mPtr.mFile );
}
memset ( fp, 0, sizeof ( ZIPFSFile ));
filename = zipfs_get_abs_filepath ( filename );
mount = find_best_virtual_path ( filename );
if ( mount ) {
if ( mode [ 0 ] == 'r' ) {
ZIPFSZipStream* zipStream;
filename = ZIPFSVirtualPath_GetLocalPath ( mount, filename );
zipStream = ZIPFSZipStream_Open ( mount->mArchive, filename );
if ( zipStream ) {
file->mIsArchive = 1;
file->mPtr.mZip = zipStream;
result = file;
}
}
}
else {
FILE* stdFile = fopen ( filename, mode );
if ( stdFile ) {
file->mPtr.mFile = stdFile;
result = file;
}
}
return ( ZIPFSFILE* )result;
}
