1f7f0e87e5
details. * include/freetype/internal/cfferrs.h, include/freetype/internal/tterrors.h, include/freetype/internal/t1errors.h: Removed. Replaced with files local to the module. All extra error codes have been moved to `fterrors.h'. * src/sfnt/ttpost.h: Move error codes to `fterrors.h'. * src/autohint/aherrors.h, src/cache/ftcerror.h, src/cff/cfferrs.h, src/cid/ciderrs.h, src/pcf/pcferror.h, src/psaux/psauxerr.h, src/psnames/psnamerr.h, src/raster/rasterrs.h, src/sfnt/sferrors.h, src/smooth/ftsmerrs.h, src/truetype/tterrors.h, src/type1/t1errors.h, src/winfonts/fnterrs.h: New files defining the error names for the module it belongs to. * include/freetype/ftmoderr.h: New file, defining the module error offsets. Its structure is similar to `fterrors.h'. * include/freetype/fterrors.h (FT_NOERRORDEF): New macro. (FT_ERRORDEF): Redefined to use module error offsets. All internal error codes are now public; unused error codes have been removed, some are new. * include/freetype/config/ftheader.h (FT_MODULE_ERRORS_H): New macro. * include/freetype/config/ftoption.h (FT_CONFIG_OPTION_USE_MODULE_ERRORS): New macro. All other source files have been updated to use the new error codes; some already existing (internal) error codes local to a module have been renamed to give them the same name as in the base module. All make files have been updated to include the local error files. * src/cid/cidtokens.h: Replaced with... * src/cid/cidtoken.h: This file for 8+3 consistency. * src/raster/ftraster.c: Use macros for header file names.
158 lines
5.3 KiB
C
158 lines
5.3 KiB
C
/***************************************************************************/
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/* */
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/* cidparse.c */
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/* */
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/* CID-keyed Type1 parser (body). */
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/* */
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/* Copyright 1996-2000 by */
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/* David Turner, Robert Wilhelm, and Werner Lemberg. */
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/* */
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/* This file is part of the FreeType project, and may only be used, */
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/* modified, and distributed under the terms of the FreeType project */
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/* license, LICENSE.TXT. By continuing to use, modify, or distribute */
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/* this file you indicate that you have read the license and */
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/* understand and accept it fully. */
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/* */
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/***************************************************************************/
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#include <ft2build.h>
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#include FT_INTERNAL_DEBUG_H
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#include FT_INTERNAL_CALC_H
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#include FT_INTERNAL_OBJECTS_H
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#include FT_INTERNAL_STREAM_H
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#include "cidparse.h"
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#include "ciderrs.h"
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#include <string.h> /* for strncmp() */
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/*************************************************************************/
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/* */
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/* The macro FT_COMPONENT is used in trace mode. It is an implicit */
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/* parameter of the FT_TRACE() and FT_ERROR() macros, used to print/log */
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/* messages during execution. */
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/* */
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#undef FT_COMPONENT
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#define FT_COMPONENT trace_cidparse
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/*************************************************************************/
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/*************************************************************************/
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/*************************************************************************/
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/***** *****/
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/***** INPUT STREAM PARSER *****/
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/***** *****/
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/*************************************************************************/
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/*************************************************************************/
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/*************************************************************************/
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FT_LOCAL_DEF
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FT_Error CID_New_Parser( CID_Parser* parser,
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FT_Stream stream,
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FT_Memory memory,
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PSAux_Interface* psaux )
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{
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FT_Error error;
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FT_ULong base_offset, offset, ps_len;
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FT_Byte buffer[256 + 10];
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FT_Int buff_len;
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MEM_Set( parser, 0, sizeof ( *parser ) );
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psaux->t1_parser_funcs->init( &parser->root, 0, 0, memory );
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parser->stream = stream;
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base_offset = FILE_Pos();
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/* first of all, check the font format in the header */
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if ( ACCESS_Frame( 31 ) )
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goto Exit;
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if ( strncmp( (char *)stream->cursor,
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"%!PS-Adobe-3.0 Resource-CIDFont", 31 ) )
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{
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FT_TRACE2(( "[not a valid CID-keyed font]\n" ));
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error = CID_Err_Unknown_File_Format;
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}
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FORGET_Frame();
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if ( error )
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goto Exit;
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/* now, read the rest of the file, until we find a `StartData' */
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buff_len = 256;
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for (;;)
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{
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FT_Byte *p, *limit = buffer + 256;
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FT_ULong top_position;
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/* fill input buffer */
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buff_len -= 256;
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if ( buff_len > 0 )
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MEM_Move( buffer, limit, buff_len );
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p = buffer + buff_len;
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if ( FILE_Read( p, 256 + 10 - buff_len ) )
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goto Exit;
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top_position = FILE_Pos() - buff_len;
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buff_len = 256 + 10;
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/* look for `StartData' */
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for ( p = buffer; p < limit; p++ )
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{
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if ( p[0] == 'S' && strncmp( (char*)p, "StartData", 9 ) == 0 )
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{
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/* save offset of binary data after `StartData' */
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offset = (FT_ULong)( top_position - ( limit - p ) + 10 );
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goto Found;
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}
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}
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}
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Found:
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/* we have found the start of the binary data. We will now */
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/* rewind and extract the frame of corresponding to the Postscript */
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/* section */
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ps_len = offset - base_offset;
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if ( FILE_Seek( base_offset ) ||
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EXTRACT_Frame( ps_len, parser->postscript ) )
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goto Exit;
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parser->data_offset = offset;
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parser->postscript_len = ps_len;
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parser->root.base = parser->postscript;
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parser->root.cursor = parser->postscript;
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parser->root.limit = parser->root.cursor + ps_len;
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parser->num_dict = -1;
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Exit:
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return error;
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}
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FT_LOCAL_DEF
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void CID_Done_Parser( CID_Parser* parser )
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{
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/* always free the private dictionary */
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if ( parser->postscript )
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{
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FT_Stream stream = parser->stream;
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RELEASE_Frame( parser->postscript );
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}
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parser->root.funcs.done( &parser->root );
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}
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/* END */
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