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-rw-r--r--freetype/src/bzip2/Jamfile19
-rw-r--r--freetype/src/bzip2/ftbzip2.c510
-rw-r--r--freetype/src/bzip2/rules.mk63
3 files changed, 592 insertions, 0 deletions
diff --git a/freetype/src/bzip2/Jamfile b/freetype/src/bzip2/Jamfile
new file mode 100644
index 000000000..3da986dce
--- /dev/null
+++ b/freetype/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/freetype/src/bzip2/ftbzip2.c b/freetype/src/bzip2/ftbzip2.c
new file mode 100644
index 000000000..e443dc85e
--- /dev/null
+++ b/freetype/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 = NULL;
+
+
+ /*
+ * 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/freetype/src/bzip2/rules.mk b/freetype/src/bzip2/rules.mk
new file mode 100644
index 000000000..0ff2628b4
--- /dev/null
+++ b/freetype/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
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-22 12:53:07 +0000