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path: root/third_party/freetype/src/cid/cidparse.c
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Diffstat (limited to 'third_party/freetype/src/cid/cidparse.c')
-rw-r--r--third_party/freetype/src/cid/cidparse.c277
1 files changed, 0 insertions, 277 deletions
diff --git a/third_party/freetype/src/cid/cidparse.c b/third_party/freetype/src/cid/cidparse.c
deleted file mode 100644
index 007609bbdf..0000000000
--- a/third_party/freetype/src/cid/cidparse.c
+++ /dev/null
@@ -1,277 +0,0 @@
-/***************************************************************************/
-/* */
-/* cidparse.c */
-/* */
-/* CID-keyed Type1 parser (body). */
-/* */
-/* Copyright 1996-2017 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_DEBUG_H
-#include FT_INTERNAL_OBJECTS_H
-#include FT_INTERNAL_STREAM_H
-
-#include "cidparse.h"
-
-#include "ciderrs.h"
-
-
- /*************************************************************************/
- /* */
- /* The macro FT_COMPONENT is used in trace mode. It is an implicit */
- /* parameter of the FT_TRACE() and FT_ERROR() macros, used to print/log */
- /* messages during execution. */
- /* */
-#undef FT_COMPONENT
-#define FT_COMPONENT trace_cidparse
-
-
- /*************************************************************************/
- /*************************************************************************/
- /*************************************************************************/
- /***** *****/
- /***** INPUT STREAM PARSER *****/
- /***** *****/
- /*************************************************************************/
- /*************************************************************************/
- /*************************************************************************/
-
-
-#define STARTDATA "StartData"
-#define STARTDATA_LEN ( sizeof ( STARTDATA ) - 1 )
-#define SFNTS "/sfnts"
-#define SFNTS_LEN ( sizeof ( SFNTS ) - 1 )
-
-
- FT_LOCAL_DEF( FT_Error )
- cid_parser_new( CID_Parser* parser,
- FT_Stream stream,
- FT_Memory memory,
- PSAux_Service psaux )
- {
- FT_Error error;
- FT_ULong base_offset, offset, ps_len;
- FT_Byte *cur, *limit;
- FT_Byte *arg1, *arg2;
-
-
- FT_ZERO( parser );
- psaux->ps_parser_funcs->init( &parser->root, 0, 0, memory );
-
- parser->stream = stream;
-
- base_offset = FT_STREAM_POS();
-
- /* first of all, check the font format in the header */
- if ( FT_FRAME_ENTER( 31 ) )
- goto Exit;
-
- if ( ft_strncmp( (char *)stream->cursor,
- "%!PS-Adobe-3.0 Resource-CIDFont", 31 ) )
- {
- FT_TRACE2(( " not a CID-keyed font\n" ));
- error = FT_THROW( Unknown_File_Format );
- }
-
- FT_FRAME_EXIT();
- if ( error )
- goto Exit;
-
- Again:
- /* now, read the rest of the file until we find */
- /* `StartData' or `/sfnts' */
- {
- /*
- * The algorithm is as follows (omitting the case with less than 256
- * bytes to fill for simplicity).
- *
- * 1. Fill the buffer with 256 + STARTDATA_LEN bytes.
- *
- * 2. Search for the STARTDATA and SFNTS strings at positions
- * buffer[0], buffer[1], ...,
- * buffer[255 + STARTDATA_LEN - SFNTS_LEN].
- *
- * 3. Move the last STARTDATA_LEN bytes to buffer[0].
- *
- * 4. Fill the buffer with 256 bytes, starting at STARTDATA_LEN.
- *
- * 5. Repeat with step 2.
- *
- */
- FT_Byte buffer[256 + STARTDATA_LEN + 1];
-
- /* values for the first loop */
- FT_ULong read_len = 256 + STARTDATA_LEN;
- FT_ULong read_offset = 0;
- FT_Byte* p = buffer;
-
-
- for ( offset = FT_STREAM_POS(); ; offset += 256 )
- {
- FT_ULong stream_len;
-
-
- stream_len = stream->size - FT_STREAM_POS();
-
- read_len = FT_MIN( read_len, stream_len );
- if ( FT_STREAM_READ( p, read_len ) )
- goto Exit;
-
- /* ensure that we do not compare with data beyond the buffer */
- p[read_len] = '\0';
-
- limit = p + read_len - SFNTS_LEN;
-
- for ( p = buffer; p < limit; p++ )
- {
- if ( p[0] == 'S' &&
- ft_strncmp( (char*)p, STARTDATA, STARTDATA_LEN ) == 0 )
- {
- /* save offset of binary data after `StartData' */
- offset += (FT_ULong)( p - buffer ) + STARTDATA_LEN + 1;
- goto Found;
- }
- else if ( p[1] == 's' &&
- ft_strncmp( (char*)p, SFNTS, SFNTS_LEN ) == 0 )
- {
- offset += (FT_ULong)( p - buffer ) + SFNTS_LEN + 1;
- goto Found;
- }
- }
-
- if ( read_offset + read_len < STARTDATA_LEN )
- {
- FT_TRACE2(( "cid_parser_new: no `StartData' keyword found\n" ));
- error = FT_THROW( Invalid_File_Format );
- goto Exit;
- }
-
- FT_MEM_MOVE( buffer,
- buffer + read_offset + read_len - STARTDATA_LEN,
- STARTDATA_LEN );
-
- /* values for the next loop */
- read_len = 256;
- read_offset = STARTDATA_LEN;
- p = buffer + read_offset;
- }
- }
-
- Found:
- /* We have found the start of the binary data or the `/sfnts' token. */
- /* Now rewind and extract the frame corresponding to this PostScript */
- /* section. */
-
- ps_len = offset - base_offset;
- if ( FT_STREAM_SEEK( base_offset ) ||
- FT_FRAME_EXTRACT( ps_len, parser->postscript ) )
- goto Exit;
-
- parser->data_offset = offset;
- parser->postscript_len = ps_len;
- parser->root.base = parser->postscript;
- parser->root.cursor = parser->postscript;
- parser->root.limit = parser->root.cursor + ps_len;
- parser->num_dict = -1;
-
- /* Finally, we check whether `StartData' or `/sfnts' was real -- */
- /* it could be in a comment or string. We also get the arguments */
- /* of `StartData' to find out whether the data is represented in */
- /* binary or hex format. */
-
- arg1 = parser->root.cursor;
- cid_parser_skip_PS_token( parser );
- cid_parser_skip_spaces ( parser );
- arg2 = parser->root.cursor;
- cid_parser_skip_PS_token( parser );
- cid_parser_skip_spaces ( parser );
-
- limit = parser->root.limit;
- cur = parser->root.cursor;
-
- while ( cur <= limit - SFNTS_LEN )
- {
- if ( parser->root.error )
- {
- error = parser->root.error;
- goto Exit;
- }
-
- if ( cur[0] == 'S' &&
- cur <= limit - STARTDATA_LEN &&
- ft_strncmp( (char*)cur, STARTDATA, STARTDATA_LEN ) == 0 )
- {
- if ( ft_strncmp( (char*)arg1, "(Hex)", 5 ) == 0 )
- {
- FT_Long tmp = ft_strtol( (const char *)arg2, NULL, 10 );
-
-
- if ( tmp < 0 )
- {
- FT_ERROR(( "cid_parser_new: invalid length of hex data\n" ));
- error = FT_THROW( Invalid_File_Format );
- }
- else
- parser->binary_length = (FT_ULong)tmp;
- }
-
- goto Exit;
- }
- else if ( cur[1] == 's' &&
- ft_strncmp( (char*)cur, SFNTS, SFNTS_LEN ) == 0 )
- {
- FT_TRACE2(( "cid_parser_new: cannot handle Type 11 fonts\n" ));
- error = FT_THROW( Unknown_File_Format );
- goto Exit;
- }
-
- cid_parser_skip_PS_token( parser );
- cid_parser_skip_spaces ( parser );
- arg1 = arg2;
- arg2 = cur;
- cur = parser->root.cursor;
- }
-
- /* we haven't found the correct `StartData'; go back and continue */
- /* searching */
- FT_FRAME_RELEASE( parser->postscript );
- if ( !FT_STREAM_SEEK( offset ) )
- goto Again;
-
- Exit:
- return error;
- }
-
-
-#undef STARTDATA
-#undef STARTDATA_LEN
-#undef SFNTS
-#undef SFNTS_LEN
-
-
- FT_LOCAL_DEF( void )
- cid_parser_done( CID_Parser* parser )
- {
- /* always free the private dictionary */
- if ( parser->postscript )
- {
- FT_Stream stream = parser->stream;
-
-
- FT_FRAME_RELEASE( parser->postscript );
- }
- parser->root.funcs.done( &parser->root );
- }
-
-
-/* END */
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