From ed913c2151e40eda626d8d2809ed3229aade2941 Mon Sep 17 00:00:00 2001 From: Joel Klinghed Date: Fri, 31 Dec 2010 16:59:33 +0100 Subject: [PATCH] Add bzip2 compression support to handle *.pcf.bz2 files. * builds/unix/configure.raw: Test for libbz2 library. * devel/ftoption.h, include/freetype/config/ftoption.h (FT_CONFIG_OPTION_USE_BZIP2): Define. * include/freetype/config/ftheader.h (FT_BZIP2_H): Define. * include/freetype/ftbzip2.h: New file. * src/bzip2/*: New files. * src/pcf/pcf.h: s/gzip_/comp_/. * src/pcf/pcfdrvr.c: Include FT_BZIP2_H. s/gzip_/comp_/. (PCF_Face_Init): Handle bzip2 compressed files. * docs/formats.txt, modules.cfg: Updated. --- ChangeLog | 23 +- builds/unix/configure.raw | 16 + devel/ftoption.h | 16 + docs/formats.txt | 6 +- include/freetype/config/ftheader.h | 15 +- include/freetype/config/ftoption.h | 16 + include/freetype/ftbzip2.h | 102 ++++++ modules.cfg | 7 +- src/bzip2/Jamfile | 19 ++ src/bzip2/ftbzip2.c | 510 +++++++++++++++++++++++++++++ src/bzip2/rules.mk | 63 ++++ src/pcf/pcf.h | 6 +- src/pcf/pcfdrivr.c | 44 ++- 13 files changed, 823 insertions(+), 20 deletions(-) create mode 100644 include/freetype/ftbzip2.h create mode 100644 src/bzip2/Jamfile create mode 100644 src/bzip2/ftbzip2.c create mode 100644 src/bzip2/rules.mk diff --git a/ChangeLog b/ChangeLog index 4f1641357..a4fc2c4b1 100644 --- a/ChangeLog +++ b/ChangeLog @@ -1,8 +1,29 @@ +2010-12-31 Joel Klinghed + + Add bzip2 compression support to handle *.pcf.bz2 files. + + * builds/unix/configure.raw: Test for libbz2 library. + + * devel/ftoption.h, include/freetype/config/ftoption.h + (FT_CONFIG_OPTION_USE_BZIP2): Define. + * include/freetype/config/ftheader.h (FT_BZIP2_H): Define. + + * include/freetype/ftbzip2.h: New file. + + * src/bzip2/*: New files. + + * src/pcf/pcf.h: s/gzip_/comp_/. + * src/pcf/pcfdrvr.c: Include FT_BZIP2_H. + s/gzip_/comp_/. + (PCF_Face_Init): Handle bzip2 compressed files. + + * docs/formats.txt, modules.cfg: Updated. + 2010-12-25 Harsha Apply Savannah patch #7422. - If we encouter a space in a string then the sbit buffer is NULL, + If we encounter a space in a string then the sbit buffer is NULL, height and width are 0s. So the check in ftc_snode_compare will always pass for spaces (comparision with 255). Here the comments above the condition are proper but the implementation is not. When diff --git a/builds/unix/configure.raw b/builds/unix/configure.raw index add41bfa7..1785c47ee 100644 --- a/builds/unix/configure.raw +++ b/builds/unix/configure.raw @@ -229,6 +229,20 @@ if test x$with_zlib != xno && test -n "$LIBZ"; then SYSTEM_ZLIB=yes fi +# check for system libbz2 + +# don't quote AS_HELP_STRING! +AC_ARG_WITH([bzip2], + AS_HELP_STRING([--without-bzip2], + [do not support bzip2 compressed fonts])) +if test x$with_bzip2 != xno && test -z "$LIBBZ2"; then + AC_CHECK_LIB([bz2], [BZ2_bzDecompress], [AC_CHECK_HEADER([bzlib.h], [LIBBZ2='-lbz2'])]) +fi +if test x$with_bzip2 != xno && test -n "$LIBBZ2"; then + CFLAGS="$CFLAGS -DFT_CONFIG_OPTION_USE_BZIP2" + LDFLAGS="$LDFLAGS $LIBBZ2" + SYSTEM_BZ2LIB=yes +fi # Some options handling SDKs/archs in CFLAGS should be copied # to LDFLAGS. Apple TechNote 2137 recommends to include these @@ -644,10 +658,12 @@ esac AC_SUBST([ftmac_c]) AC_SUBST([LIBZ]) +AC_SUBST([LIBBZ2]) AC_SUBST([CFLAGS]) AC_SUBST([LDFLAGS]) AC_SUBST([FT2_EXTRA_LIBS]) AC_SUBST([SYSTEM_ZLIB]) +AC_SUBST([SYSTEM_BZ2LIB]) LT_INIT(win32-dll) diff --git a/devel/ftoption.h b/devel/ftoption.h index 32dd25aa7..24f72bc41 100644 --- a/devel/ftoption.h +++ b/devel/ftoption.h @@ -188,6 +188,22 @@ FT_BEGIN_HEADER /* #define FT_CONFIG_OPTION_SYSTEM_ZLIB */ + /*************************************************************************/ + /* */ + /* Bzip2-compressed file support. */ + /* */ + /* FreeType now handles font files that have been compressed with the */ + /* `bzip2' program. This is mostly used to parse many of the PCF */ + /* files that come with XFree86. The implementation uses `libbz2' to */ + /* partially uncompress the file on the fly (see src/bzip2/ftbzip2.c). */ + /* Contrary to gzip, bzip2 currently is not included and need to use */ + /* the system available bzip2 implementation. */ + /* */ + /* Define this macro if you want to enable this `feature'. */ + /* */ +/* #define FT_CONFIG_OPTION_USE_BZIP2 */ + + /*************************************************************************/ /* */ /* DLL export compilation */ diff --git a/docs/formats.txt b/docs/formats.txt index efec66060..827c8947f 100644 --- a/docs/formats.txt +++ b/docs/formats.txt @@ -11,8 +11,9 @@ reference document and whether it is supported in FreeType 2. wrapper format: The format used to represent the font data. In the table below it is used only if the font format differs. Possible values are `SFNT' - (binary), `PS' (a text header, followed by binary or text data), and - `LZW' (compressed with either `gzip' or `compress'). + (binary), `PS' (a text header, followed by binary or text data), + `LZW' (compressed with either `gzip' or `compress'), and + `BZ2' (compressed with `bzip2`). font format: How the font is to be accessed, possibly after converting the file @@ -113,6 +114,7 @@ MAC --- PS TYPE_1 --- type1 T1_SPEC.pdf --- --- PCF --- --- pcf X11 [4] --- LZW PCF --- --- pcf X11 [4] +--- BZ2 PCF --- --- pcf X11 [4] --- --- PFR PFR0 --- pfr [2] diff --git a/include/freetype/config/ftheader.h b/include/freetype/config/ftheader.h index b63945dcb..2a7b8c4e0 100644 --- a/include/freetype/config/ftheader.h +++ b/include/freetype/config/ftheader.h @@ -4,7 +4,7 @@ /* */ /* Build macros of the FreeType 2 library. */ /* */ -/* Copyright 1996-2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008 by */ +/* Copyright 1996-2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2010 by */ /* David Turner, Robert Wilhelm, and Werner Lemberg. */ /* */ /* This file is part of the FreeType project, and may only be used, */ @@ -424,6 +424,19 @@ #define FT_LZW_H + /************************************************************************* + * + * @macro: + * FT_BZIP2_H + * + * @description: + * A macro used in #include statements to name the file containing the + * definitions of an API which supports bzip2-compressed files. + * + */ +#define FT_BZIP2_H + + /************************************************************************* * * @macro: diff --git a/include/freetype/config/ftoption.h b/include/freetype/config/ftoption.h index 2b46259c1..1ab6e1e4b 100644 --- a/include/freetype/config/ftoption.h +++ b/include/freetype/config/ftoption.h @@ -188,6 +188,22 @@ FT_BEGIN_HEADER /* #define FT_CONFIG_OPTION_SYSTEM_ZLIB */ + /*************************************************************************/ + /* */ + /* Bzip2-compressed file support. */ + /* */ + /* FreeType now handles font files that have been compressed with the */ + /* `bzip2' program. This is mostly used to parse many of the PCF */ + /* files that come with XFree86. The implementation uses `libbz2' to */ + /* partially uncompress the file on the fly (see src/bzip2/ftbzip2.c). */ + /* Contrary to gzip, bzip2 currently is not included and need to use */ + /* the system available bzip2 implementation. */ + /* */ + /* Define this macro if you want to enable this `feature'. */ + /* */ +/* #define FT_CONFIG_OPTION_USE_BZIP2 */ + + /*************************************************************************/ /* */ /* DLL export compilation */ diff --git a/include/freetype/ftbzip2.h b/include/freetype/ftbzip2.h new file mode 100644 index 000000000..083c3563d --- /dev/null +++ b/include/freetype/ftbzip2.h @@ -0,0 +1,102 @@ +/***************************************************************************/ +/* */ +/* ftbzip2.h */ +/* */ +/* Bzip2-compressed stream support. */ +/* */ +/* Copyright 2010 by */ +/* Joel Klinghed. */ +/* */ +/* This file is part of the FreeType project, and may only be used, */ +/* modified, and distributed under the terms of the FreeType project */ +/* license, LICENSE.TXT. By continuing to use, modify, or distribute */ +/* this file you indicate that you have read the license and */ +/* understand and accept it fully. */ +/* */ +/***************************************************************************/ + + +#ifndef __FTBZIP2_H__ +#define __FTBZIP2_H__ + +#include +#include FT_FREETYPE_H + +#ifdef FREETYPE_H +#error "freetype.h of FreeType 1 has been loaded!" +#error "Please fix the directory search order for header files" +#error "so that freetype.h of FreeType 2 is found first." +#endif + + +FT_BEGIN_HEADER + + /*************************************************************************/ + /* */ + /*
*/ + /* bzip2 */ + /* */ + /* */ + /* BZIP2 Streams */ + /* */ + /* <Abstract> */ + /* Using bzip2-compressed font files. */ + /* */ + /* <Description> */ + /* This section contains the declaration of Bzip2-specific functions. */ + /* */ + /*************************************************************************/ + + + /************************************************************************ + * + * @function: + * FT_Stream_OpenBzip2 + * + * @description: + * Open a new stream to parse bzip2-compressed font files. This is + * mainly used to support the compressed `*.pcf.gz' fonts that come + * with XFree86. + * + * @input: + * stream :: + * The target embedding stream. + * + * source :: + * The source stream. + * + * @return: + * FreeType error code. 0~means success. + * + * @note: + * The source stream must be opened _before_ calling this function. + * + * Calling the internal function `FT_Stream_Close' on the new stream will + * *not* call `FT_Stream_Close' on the source stream. None of the stream + * objects will be released to the heap. + * + * The stream implementation is very basic and resets the decompression + * process each time seeking backwards is needed within the stream. + * + * In certain builds of the library, bzip2 compression recognition is + * automatically handled when calling @FT_New_Face or @FT_Open_Face. + * This means that if no font driver is capable of handling the raw + * compressed file, the library will try to open a bzip2 compressed stream + * from it and re-open the face with it. + * + * This function may return `FT_Err_Unimplemented_Feature' if your build + * of FreeType was not compiled with bzip2 support. + */ + FT_EXPORT( FT_Error ) + FT_Stream_OpenBzip2( FT_Stream stream, + FT_Stream source ); + + /* */ + + +FT_END_HEADER + +#endif /* __FTBZIP2_H__ */ + + +/* END */ diff --git a/modules.cfg b/modules.cfg index 4047d7f09..8d5b6b598 100644 --- a/modules.cfg +++ b/modules.cfg @@ -1,6 +1,6 @@ # modules.cfg # -# Copyright 2005, 2006, 2007, 2009 by +# Copyright 2005, 2006, 2007, 2009, 2010 by # David Turner, Robert Wilhelm, and Werner Lemberg. # # This file is part of the FreeType project, and may only be used, modified, @@ -122,6 +122,11 @@ AUX_MODULES += gzip # See include/freetype/ftlzw.h for the API. AUX_MODULES += lzw +# Support for streams compressed with bzip2 (files with suffix .bz2). +# +# See include/freetype/ftbzip2.h for the API. +AUX_MODULES += bzip2 + # OpenType table validation. Needs ftotval.c below. # # AUX_MODULES += otvalid diff --git a/src/bzip2/Jamfile b/src/bzip2/Jamfile new file mode 100644 index 000000000..3da986dce --- /dev/null +++ b/src/bzip2/Jamfile @@ -0,0 +1,19 @@ +# FreeType 2 src/bzip2 Jamfile +# +# Copyright 2010 by +# Joel Klinghed +# +# Based on src/lzw/Jamfile, Copyright 2004, 2006 by +# David Turner, Robert Wilhelm, and Werner Lemberg. +# +# This file is part of the FreeType project, and may only be used, modified, +# and distributed under the terms of the FreeType project license, +# LICENSE.TXT. By continuing to use, modify, or distribute this file you +# indicate that you have read the license and understand and accept it +# fully. + +SubDir FT2_TOP $(FT2_SRC_DIR) bzip2 ; + +Library $(FT2_LIB) : ftbzip2.c ; + +# end of src/bzip2 Jamfile diff --git a/src/bzip2/ftbzip2.c b/src/bzip2/ftbzip2.c new file mode 100644 index 000000000..1daffb77c --- /dev/null +++ b/src/bzip2/ftbzip2.c @@ -0,0 +1,510 @@ +/***************************************************************************/ +/* */ +/* ftbzip2.c */ +/* */ +/* FreeType support for .bz2 compressed files. */ +/* */ +/* This optional component relies on libbz2. It should mainly be used to */ +/* parse compressed PCF fonts, as found with many X11 server */ +/* distributions. */ +/* */ +/* Copyright 2010 by */ +/* Joel Klinghed. */ +/* */ +/* Based on src/gzip/ftgzip.c, Copyright 2002 - 2010 by */ +/* David Turner, Robert Wilhelm, and Werner Lemberg. */ +/* */ +/* This file is part of the FreeType project, and may only be used, */ +/* modified, and distributed under the terms of the FreeType project */ +/* license, LICENSE.TXT. By continuing to use, modify, or distribute */ +/* this file you indicate that you have read the license and */ +/* understand and accept it fully. */ +/* */ +/***************************************************************************/ + + +#include <ft2build.h> +#include FT_INTERNAL_MEMORY_H +#include FT_INTERNAL_STREAM_H +#include FT_INTERNAL_DEBUG_H +#include FT_BZIP2_H +#include FT_CONFIG_STANDARD_LIBRARY_H + + +#include FT_MODULE_ERRORS_H + +#undef __FTERRORS_H__ + +#define FT_ERR_PREFIX Bzip2_Err_ +#define FT_ERR_BASE FT_Mod_Err_Bzip2 + +#include FT_ERRORS_H + + +#ifdef FT_CONFIG_OPTION_USE_BZIP2 + +#ifdef FT_CONFIG_OPTION_PIC +#error "bzip2 code does not support PIC yet" +#endif + +#define BZ_NO_STDIO /* Do not need FILE */ +#include <bzlib.h> + + +/***************************************************************************/ +/***************************************************************************/ +/***** *****/ +/***** B Z I P 2 M E M O R Y M A N A G E M E N T *****/ +/***** *****/ +/***************************************************************************/ +/***************************************************************************/ + + /* it is better to use FreeType memory routines instead of raw + 'malloc/free' */ + + typedef void *(* alloc_func)(void*, int, int); + typedef void (* free_func)(void*, void*); + + static void* + ft_bzip2_alloc( FT_Memory memory, + int items, + int size ) + { + FT_ULong sz = (FT_ULong)size * items; + FT_Error error; + FT_Pointer p = NULL; + + + (void)FT_ALLOC( p, sz ); + return p; + } + + + static void + ft_bzip2_free( FT_Memory memory, + void* address ) + { + FT_MEM_FREE( address ); + } + + +/***************************************************************************/ +/***************************************************************************/ +/***** *****/ +/***** B Z I P 2 F I L E D E S C R I P T O R *****/ +/***** *****/ +/***************************************************************************/ +/***************************************************************************/ + +#define FT_BZIP2_BUFFER_SIZE 4096 + + typedef struct FT_BZip2FileRec_ + { + FT_Stream source; /* parent/source stream */ + FT_Stream stream; /* embedding stream */ + FT_Memory memory; /* memory allocator */ + bz_stream bzstream; /* bzlib input stream */ + + FT_Byte input[FT_BZIP2_BUFFER_SIZE]; /* input read buffer */ + + FT_Byte buffer[FT_BZIP2_BUFFER_SIZE]; /* output buffer */ + FT_ULong pos; /* position in output */ + FT_Byte* cursor; + FT_Byte* limit; + + } FT_BZip2FileRec, *FT_BZip2File; + + + /* check and skip .bz2 header - we don't support `transparent' compression */ + static FT_Error + ft_bzip2_check_header( FT_Stream stream ) + { + FT_Error error = Bzip2_Err_Ok; + FT_Byte head[4]; + + + if ( FT_STREAM_SEEK( 0 ) || + FT_STREAM_READ( head, 4 ) ) + goto Exit; + + /* head[0] && head[1] are the magic numbers; */ + /* head[2] is the version, and head[3] the blocksize */ + if ( head[0] != 0x42 || + head[1] != 0x5a || + head[2] != 0x68 ) /* only support bzip2 (huffman) */ + { + error = Bzip2_Err_Invalid_File_Format; + goto Exit; + } + + Exit: + return error; + } + + + static FT_Error + ft_bzip2_file_init( FT_BZip2File zip, + FT_Stream stream, + FT_Stream source ) + { + bz_stream* bzstream = &zip->bzstream; + FT_Error error = Bzip2_Err_Ok; + + + zip->stream = stream; + zip->source = source; + zip->memory = stream->memory; + + zip->limit = zip->buffer + FT_BZIP2_BUFFER_SIZE; + zip->cursor = zip->limit; + zip->pos = 0; + + /* check .bz2 header */ + { + stream = source; + + error = ft_bzip2_check_header( stream ); + if ( error ) + goto Exit; + + if ( FT_STREAM_SEEK( 0 ) ) + goto Exit; + } + + /* initialize bzlib */ + bzstream->bzalloc = (alloc_func)ft_bzip2_alloc; + bzstream->bzfree = (free_func) ft_bzip2_free; + bzstream->opaque = zip->memory; + + bzstream->avail_in = 0; + bzstream->next_in = (char*)zip->buffer; + + if ( BZ2_bzDecompressInit( bzstream, 0, 0 ) != BZ_OK || + bzstream->next_in == NULL ) + error = Bzip2_Err_Invalid_File_Format; + + Exit: + return error; + } + + + static void + ft_bzip2_file_done( FT_BZip2File zip ) + { + bz_stream* bzstream = &zip->bzstream; + + + BZ2_bzDecompressEnd( bzstream ); + + /* clear the rest */ + bzstream->bzalloc = NULL; + bzstream->bzfree = NULL; + bzstream->opaque = NULL; + bzstream->next_in = NULL; + bzstream->next_out = NULL; + bzstream->avail_in = 0; + bzstream->avail_out = 0; + + zip->memory = NULL; + zip->source = NULL; + zip->stream = NULL; + } + + + static FT_Error + ft_bzip2_file_reset( FT_BZip2File zip ) + { + FT_Stream stream = zip->source; + FT_Error error; + + + if ( !FT_STREAM_SEEK( 0 ) ) + { + bz_stream* bzstream = &zip->bzstream; + + + BZ2_bzDecompressEnd( bzstream ); + + bzstream->avail_in = 0; + bzstream->next_in = (char*)zip->input; + bzstream->avail_out = 0; + bzstream->next_out = (char*)zip->buffer; + + zip->limit = zip->buffer + FT_BZIP2_BUFFER_SIZE; + zip->cursor = zip->limit; + zip->pos = 0; + + BZ2_bzDecompressInit( bzstream, 0, 0 ); + } + + return error; + } + + + static FT_Error + ft_bzip2_file_fill_input( FT_BZip2File zip ) + { + bz_stream* bzstream = &zip->bzstream; + FT_Stream stream = zip->source; + FT_ULong size; + + + if ( stream->read ) + { + size = stream->read( stream, stream->pos, zip->input, + FT_BZIP2_BUFFER_SIZE ); + if ( size == 0 ) + return Bzip2_Err_Invalid_Stream_Operation; + } + else + { + size = stream->size - stream->pos; + if ( size > FT_BZIP2_BUFFER_SIZE ) + size = FT_BZIP2_BUFFER_SIZE; + + if ( size == 0 ) + return Bzip2_Err_Invalid_Stream_Operation; + + FT_MEM_COPY( zip->input, stream->base + stream->pos, size ); + } + stream->pos += size; + + bzstream->next_in = (char*)zip->input; + bzstream->avail_in = size; + + return Bzip2_Err_Ok; + } + + + static FT_Error + ft_bzip2_file_fill_output( FT_BZip2File zip ) + { + bz_stream* bzstream = &zip->bzstream; + FT_Error error = Bzip2_Err_Ok; + + + zip->cursor = zip->buffer; + bzstream->next_out = (char*)zip->cursor; + bzstream->avail_out = FT_BZIP2_BUFFER_SIZE; + + while ( bzstream->avail_out > 0 ) + { + int err; + + + if ( bzstream->avail_in == 0 ) + { + error = ft_bzip2_file_fill_input( zip ); + if ( error ) + break; + } + + err = BZ2_bzDecompress( bzstream ); + + if ( err == BZ_STREAM_END ) + { + zip->limit = (FT_Byte*)bzstream->next_out; + if ( zip->limit == zip->cursor ) + error = Bzip2_Err_Invalid_Stream_Operation; + break; + } + else if ( err != BZ_OK ) + { + error = Bzip2_Err_Invalid_Stream_Operation; + break; + } + } + + return error; + } + + + /* fill output buffer; `count' must be <= FT_BZIP2_BUFFER_SIZE */ + static FT_Error + ft_bzip2_file_skip_output( FT_BZip2File zip, + FT_ULong count ) + { + FT_Error error = Bzip2_Err_Ok; + FT_ULong delta; + + + for (;;) + { + delta = (FT_ULong)( zip->limit - zip->cursor ); + if ( delta >= count ) + delta = count; + + zip->cursor += delta; + zip->pos += delta; + + count -= delta; + if ( count == 0 ) + break; + + error = ft_bzip2_file_fill_output( zip ); + if ( error ) + break; + } + + return error; + } + + + static FT_ULong + ft_bzip2_file_io( FT_BZip2File zip, + FT_ULong pos, + FT_Byte* buffer, + FT_ULong count ) + { + FT_ULong result = 0; + FT_Error error; + + + /* Reset inflate stream if we're seeking backwards. */ + /* Yes, that is not too efficient, but it saves memory :-) */ + if ( pos < zip->pos ) + { + error = ft_bzip2_file_reset( zip ); + if ( error ) + goto Exit; + } + + /* skip unwanted bytes */ + if ( pos > zip->pos ) + { + error = ft_bzip2_file_skip_output( zip, (FT_ULong)( pos - zip->pos ) ); + if ( error ) + goto Exit; + } + + if ( count == 0 ) + goto Exit; + + /* now read the data */ + for (;;) + { + FT_ULong delta; + + + delta = (FT_ULong)( zip->limit - zip->cursor ); + if ( delta >= count ) + delta = count; + + FT_MEM_COPY( buffer, zip->cursor, delta ); + buffer += delta; + result += delta; + zip->cursor += delta; + zip->pos += delta; + + count -= delta; + if ( count == 0 ) + break; + + error = ft_bzip2_file_fill_output( zip ); + if ( error ) + break; + } + + Exit: + return result; + } + + +/***************************************************************************/ +/***************************************************************************/ +/***** *****/ +/***** B Z E M B E D D I N G S T R E A M *****/ +/***** *****/ +/***************************************************************************/ +/***************************************************************************/ + + static void + ft_bzip2_stream_close( FT_Stream stream ) + { + FT_BZip2File zip = (FT_BZip2File)stream->descriptor.pointer; + FT_Memory memory = stream->memory; + + + if ( zip ) + { + /* finalize bzip file descriptor */ + ft_bzip2_file_done( zip ); + + FT_FREE( zip ); + + stream->descriptor.pointer = NULL; + } + } + + + static FT_ULong + ft_bzip2_stream_io( FT_Stream stream, + FT_ULong pos, + FT_Byte* buffer, + FT_ULong count ) + { + FT_BZip2File zip = (FT_BZip2File)stream->descriptor.pointer; + + + return ft_bzip2_file_io( zip, pos, buffer, count ); + } + + + FT_EXPORT_DEF( FT_Error ) + FT_Stream_OpenBzip2( FT_Stream stream, + FT_Stream source ) + { + FT_Error error; + FT_Memory memory = source->memory; + FT_BZip2File zip; + + + /* + * check the header right now; this prevents allocating unnecessary + * objects when we don't need them + */ + error = ft_bzip2_check_header( source ); + if ( error ) + goto Exit; + + FT_ZERO( stream ); + stream->memory = memory; + + if ( !FT_QNEW( zip ) ) + { + error = ft_bzip2_file_init( zip, stream, source ); + if ( error ) + { + FT_FREE( zip ); + goto Exit; + } + + stream->descriptor.pointer = zip; + } + + stream->size = 0x7FFFFFFFL; /* don't know the real size! */ + stream->pos = 0; + stream->base = 0; + stream->read = ft_bzip2_stream_io; + stream->close = ft_bzip2_stream_close; + + Exit: + return error; + } + +#else /* !FT_CONFIG_OPTION_USE_BZIP2 */ + + FT_EXPORT_DEF( FT_Error ) + FT_Stream_OpenBzip2( FT_Stream stream, + FT_Stream source ) + { + FT_UNUSED( stream ); + FT_UNUSED( source ); + + return Bzip2_Err_Unimplemented_Feature; + } + +#endif /* !FT_CONFIG_OPTION_USE_BZIP2 */ + + +/* END */ diff --git a/src/bzip2/rules.mk b/src/bzip2/rules.mk new file mode 100644 index 000000000..0ff2628b4 --- /dev/null +++ b/src/bzip2/rules.mk @@ -0,0 +1,63 @@ +# +# FreeType 2 BZIP2 support configuration rules +# + +# Copyright 2010 by +# Joel Klinghed. +# +# Based on src/lzw/rules.mk, Copyright 2004-2006 by +# Albert Chin-A-Young. +# +# This file is part of the FreeType project, and may only be used, modified, +# and distributed under the terms of the FreeType project license, +# LICENSE.TXT. By continuing to use, modify, or distribute this file you +# indicate that you have read the license and understand and accept it +# fully. + + +# BZIP2 driver directory +# +BZIP2_DIR := $(SRC_DIR)/bzip2 + + +# compilation flags for the driver +# +BZIP2_COMPILE := $(FT_COMPILE) + + +# BZIP2 support sources (i.e., C files) +# +BZIP2_DRV_SRC := $(BZIP2_DIR)/ftbzip2.c + +# BZIP2 driver object(s) +# +# BZIP2_DRV_OBJ_M is used during `multi' builds +# BZIP2_DRV_OBJ_S is used during `single' builds +# +BZIP2_DRV_OBJ_M := $(OBJ_DIR)/ftbzip2.$O +BZIP2_DRV_OBJ_S := $(OBJ_DIR)/ftbzip2.$O + +# BZIP2 support source file for single build +# +BZIP2_DRV_SRC_S := $(BZIP2_DIR)/ftbzip2.c + + +# BZIP2 support - single object +# +$(BZIP2_DRV_OBJ_S): $(BZIP2_DRV_SRC_S) $(BZIP2_DRV_SRC) $(FREETYPE_H) $(BZIP2_DRV_H) + $(BZIP2_COMPILE) $T$(subst /,$(COMPILER_SEP),$@ $(BZIP2_DRV_SRC_S)) + + +# BZIP2 support - multiple objects +# +$(OBJ_DIR)/%.$O: $(BZIP2_DIR)/%.c $(FREETYPE_H) $(BZIP2_DRV_H) + $(BZIP2_COMPILE) $T$(subst /,$(COMPILER_SEP),$@ $<) + + +# update main driver object lists +# +DRV_OBJS_S += $(BZIP2_DRV_OBJ_S) +DRV_OBJS_M += $(BZIP2_DRV_OBJ_M) + + +# EOF diff --git a/src/pcf/pcf.h b/src/pcf/pcf.h index 1cd56c13a..af0ffc337 100644 --- a/src/pcf/pcf.h +++ b/src/pcf/pcf.h @@ -2,7 +2,7 @@ FreeType font driver for pcf fonts - Copyright (C) 2000, 2001, 2002, 2003, 2006 by + Copyright (C) 2000, 2001, 2002, 2003, 2006, 2010 by Francesco Zappa Nardelli Permission is hereby granted, free of charge, to any person obtaining a copy @@ -136,8 +136,8 @@ FT_BEGIN_HEADER { FT_FaceRec root; - FT_StreamRec gzip_stream; - FT_Stream gzip_source; + FT_StreamRec comp_stream; + FT_Stream comp_source; char* charset_encoding; char* charset_registry; diff --git a/src/pcf/pcfdrivr.c b/src/pcf/pcfdrivr.c index 6c0aa0f9e..af2a2d986 100644 --- a/src/pcf/pcfdrivr.c +++ b/src/pcf/pcfdrivr.c @@ -2,7 +2,8 @@ FreeType font driver for pcf files - Copyright (C) 2000, 2001, 2002, 2003, 2004, 2006, 2007, 2008, 2009 by + Copyright (C) 2000, 2001, 2002, 2003, 2004, 2006, 2007, 2008, 2009, + 2010 by Francesco Zappa Nardelli Permission is hereby granted, free of charge, to any person obtaining a copy @@ -32,6 +33,7 @@ THE SOFTWARE. #include FT_INTERNAL_OBJECTS_H #include FT_GZIP_H #include FT_LZW_H +#include FT_BZIP2_H #include FT_ERRORS_H #include FT_BDF_H #include FT_TRUETYPE_IDS_H @@ -248,11 +250,11 @@ THE SOFTWARE. FT_TRACE4(( "PCF_Face_Done: done face\n" )); - /* close gzip/LZW stream if any */ - if ( pcfface->stream == &face->gzip_stream ) + /* close compressed stream if any */ + if ( pcfface->stream == &face->comp_stream ) { - FT_Stream_Close( &face->gzip_stream ); - pcfface->stream = face->gzip_source; + FT_Stream_Close( &face->comp_stream ); + pcfface->stream = face->comp_source; } } @@ -277,8 +279,9 @@ THE SOFTWARE. { PCF_Face_Done( pcfface ); -#if defined( FT_CONFIG_OPTION_USE_ZLIB ) || \ - defined( FT_CONFIG_OPTION_USE_LZW ) +#if defined( FT_CONFIG_OPTION_USE_ZLIB ) || \ + defined( FT_CONFIG_OPTION_USE_LZW ) || \ + defined( FT_CONFIG_OPTION_USE_BZIP2 ) #ifdef FT_CONFIG_OPTION_USE_ZLIB { @@ -286,7 +289,7 @@ THE SOFTWARE. /* this didn't work, try gzip support! */ - error2 = FT_Stream_OpenGzip( &face->gzip_stream, stream ); + error2 = FT_Stream_OpenGzip( &face->comp_stream, stream ); if ( FT_ERROR_BASE( error2 ) == FT_Err_Unimplemented_Feature ) goto Fail; @@ -301,7 +304,7 @@ THE SOFTWARE. /* this didn't work, try LZW support! */ - error3 = FT_Stream_OpenLZW( &face->gzip_stream, stream ); + error3 = FT_Stream_OpenLZW( &face->comp_stream, stream ); if ( FT_ERROR_BASE( error3 ) == FT_Err_Unimplemented_Feature ) goto Fail; @@ -309,11 +312,26 @@ THE SOFTWARE. } #endif /* FT_CONFIG_OPTION_USE_LZW */ +#ifdef FT_CONFIG_OPTION_USE_BZIP2 + if ( error ) + { + FT_Error error4; + + + /* this didn't work, try Bzip2 support! */ + error4 = FT_Stream_OpenBzip2( &face->comp_stream, stream ); + if ( FT_ERROR_BASE( error4 ) == FT_Err_Unimplemented_Feature ) + goto Fail; + + error = error4; + } +#endif /* FT_CONFIG_OPTION_USE_BZIP2 */ + if ( error ) goto Fail; - face->gzip_source = stream; - pcfface->stream = &face->gzip_stream; + face->comp_source = stream; + pcfface->stream = &face->comp_stream; stream = pcfface->stream; @@ -321,7 +339,9 @@ THE SOFTWARE. if ( error ) goto Fail; -#else /* !(FT_CONFIG_OPTION_USE_ZLIB || FT_CONFIG_OPTION_USE_LZW) */ +#else /* !(FT_CONFIG_OPTION_USE_ZLIB || + FT_CONFIG_OPTION_USE_LZW || + FT_CONFIG_OPTION_USE_BZIP2) */ goto Fail;