diff options
Diffstat (limited to 'freetype/src/gzip/ftgzip.c')
| -rw-r--r-- | freetype/src/gzip/ftgzip.c | 78 |
1 files changed, 77 insertions, 1 deletions
diff --git a/freetype/src/gzip/ftgzip.c b/freetype/src/gzip/ftgzip.c index f26755834..2c60b6c57 100644 --- a/freetype/src/gzip/ftgzip.c +++ b/freetype/src/gzip/ftgzip.c @@ -596,6 +596,8 @@ } + /* documentation is in ftgzip.h */ + FT_EXPORT_DEF( FT_Error ) FT_Stream_OpenGzip( FT_Stream stream, FT_Stream source ) @@ -684,7 +686,64 @@ return error; } -#else /* !FT_CONFIG_OPTION_USE_ZLIB */ + + /* documentation is in ftgzip.h */ + + FT_EXPORT_DEF( FT_Error ) + FT_Gzip_Uncompress( FT_Memory memory, + FT_Byte* output, + FT_ULong* output_len, + const FT_Byte* input, + FT_ULong input_len ) + { + z_stream stream; + int err; + + + /* this function is modeled after zlib's `uncompress' function */ + + stream.next_in = (Bytef*)input; + stream.avail_in = (uInt)input_len; + + stream.next_out = output; + stream.avail_out = (uInt)*output_len; + + stream.zalloc = (alloc_func)ft_gzip_alloc; + stream.zfree = (free_func) ft_gzip_free; + stream.opaque = memory; + + err = inflateInit2( &stream, MAX_WBITS ); + if ( err != Z_OK ) + return FT_THROW( Invalid_Argument ); + + err = inflate( &stream, Z_FINISH ); + if ( err != Z_STREAM_END ) + { + inflateEnd( &stream ); + if ( err == Z_OK ) + err = Z_BUF_ERROR; + } + else + { + *output_len = stream.total_out; + + err = inflateEnd( &stream ); + } + + if ( err == Z_MEM_ERROR ) + return FT_THROW( Out_Of_Memory ); + + if ( err == Z_BUF_ERROR ) + return FT_THROW( Array_Too_Large ); + + if ( err == Z_DATA_ERROR ) + return FT_THROW( Invalid_Table ); + + return FT_Err_Ok; + } + + +#else /* !FT_CONFIG_OPTION_USE_ZLIB */ FT_EXPORT_DEF( FT_Error ) FT_Stream_OpenGzip( FT_Stream stream, @@ -696,6 +755,23 @@ return FT_THROW( Unimplemented_Feature ); } + + FT_EXPORT_DEF( FT_Error ) + FT_Gzip_Uncompress( FT_Memory memory, + FT_Byte* output, + FT_ULong* output_len, + const FT_Byte* input, + FT_ULong input_len ) + { + FT_UNUSED( memory ); + FT_UNUSED( output ); + FT_UNUSED( output_len ); + FT_UNUSED( input ); + FT_UNUSED( input_len ); + + return FT_THROW( Unimplemented_Feature ); + } + #endif /* !FT_CONFIG_OPTION_USE_ZLIB */ |