--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/misc/libfreetype/src/sfnt/ttpost.c Mon Apr 25 01:46:54 2011 +0200
@@ -0,0 +1,563 @@
+/***************************************************************************/
+/* */
+/* ttpost.c */
+/* */
+/* Postcript name table processing for TrueType and OpenType fonts */
+/* (body). */
+/* */
+/* Copyright 1996-2001, 2002, 2003, 2006, 2007, 2008, 2009, 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. */
+/* */
+/***************************************************************************/
+
+ /*************************************************************************/
+ /* */
+ /* The post table is not completely loaded by the core engine. This */
+ /* file loads the missing PS glyph names and implements an API to access */
+ /* them. */
+ /* */
+ /*************************************************************************/
+
+
+#include <ft2build.h>
+#include FT_INTERNAL_DEBUG_H
+#include FT_INTERNAL_STREAM_H
+#include FT_TRUETYPE_TAGS_H
+#include "ttpost.h"
+
+#include "sferrors.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_ttpost
+
+
+ /* If this configuration macro is defined, we rely on the `PSNames' */
+ /* module to grab the glyph names. */
+
+#ifdef FT_CONFIG_OPTION_POSTSCRIPT_NAMES
+
+
+#include FT_SERVICE_POSTSCRIPT_CMAPS_H
+
+#define MAC_NAME( x ) ( (FT_String*)psnames->macintosh_name( x ) )
+
+
+#else /* FT_CONFIG_OPTION_POSTSCRIPT_NAMES */
+
+
+ /* Otherwise, we ignore the `PSNames' module, and provide our own */
+ /* table of Mac names. Thus, it is possible to build a version of */
+ /* FreeType without the Type 1 driver & PSNames module. */
+
+#define MAC_NAME( x ) ( (FT_String*)tt_post_default_names[x] )
+
+ /* the 258 default Mac PS glyph names */
+
+ static const FT_String* const tt_post_default_names[258] =
+ {
+ /* 0 */
+ ".notdef", ".null", "CR", "space", "exclam",
+ "quotedbl", "numbersign", "dollar", "percent", "ampersand",
+ /* 10 */
+ "quotesingle", "parenleft", "parenright", "asterisk", "plus",
+ "comma", "hyphen", "period", "slash", "zero",
+ /* 20 */
+ "one", "two", "three", "four", "five",
+ "six", "seven", "eight", "nine", "colon",
+ /* 30 */
+ "semicolon", "less", "equal", "greater", "question",
+ "at", "A", "B", "C", "D",
+ /* 40 */
+ "E", "F", "G", "H", "I",
+ "J", "K", "L", "M", "N",
+ /* 50 */
+ "O", "P", "Q", "R", "S",
+ "T", "U", "V", "W", "X",
+ /* 60 */
+ "Y", "Z", "bracketleft", "backslash", "bracketright",
+ "asciicircum", "underscore", "grave", "a", "b",
+ /* 70 */
+ "c", "d", "e", "f", "g",
+ "h", "i", "j", "k", "l",
+ /* 80 */
+ "m", "n", "o", "p", "q",
+ "r", "s", "t", "u", "v",
+ /* 90 */
+ "w", "x", "y", "z", "braceleft",
+ "bar", "braceright", "asciitilde", "Adieresis", "Aring",
+ /* 100 */
+ "Ccedilla", "Eacute", "Ntilde", "Odieresis", "Udieresis",
+ "aacute", "agrave", "acircumflex", "adieresis", "atilde",
+ /* 110 */
+ "aring", "ccedilla", "eacute", "egrave", "ecircumflex",
+ "edieresis", "iacute", "igrave", "icircumflex", "idieresis",
+ /* 120 */
+ "ntilde", "oacute", "ograve", "ocircumflex", "odieresis",
+ "otilde", "uacute", "ugrave", "ucircumflex", "udieresis",
+ /* 130 */
+ "dagger", "degree", "cent", "sterling", "section",
+ "bullet", "paragraph", "germandbls", "registered", "copyright",
+ /* 140 */
+ "trademark", "acute", "dieresis", "notequal", "AE",
+ "Oslash", "infinity", "plusminus", "lessequal", "greaterequal",
+ /* 150 */
+ "yen", "mu", "partialdiff", "summation", "product",
+ "pi", "integral", "ordfeminine", "ordmasculine", "Omega",
+ /* 160 */
+ "ae", "oslash", "questiondown", "exclamdown", "logicalnot",
+ "radical", "florin", "approxequal", "Delta", "guillemotleft",
+ /* 170 */
+ "guillemotright", "ellipsis", "nbspace", "Agrave", "Atilde",
+ "Otilde", "OE", "oe", "endash", "emdash",
+ /* 180 */
+ "quotedblleft", "quotedblright", "quoteleft", "quoteright", "divide",
+ "lozenge", "ydieresis", "Ydieresis", "fraction", "currency",
+ /* 190 */
+ "guilsinglleft", "guilsinglright", "fi", "fl", "daggerdbl",
+ "periodcentered", "quotesinglbase", "quotedblbase", "perthousand", "Acircumflex",
+ /* 200 */
+ "Ecircumflex", "Aacute", "Edieresis", "Egrave", "Iacute",
+ "Icircumflex", "Idieresis", "Igrave", "Oacute", "Ocircumflex",
+ /* 210 */
+ "apple", "Ograve", "Uacute", "Ucircumflex", "Ugrave",
+ "dotlessi", "circumflex", "tilde", "macron", "breve",
+ /* 220 */
+ "dotaccent", "ring", "cedilla", "hungarumlaut", "ogonek",
+ "caron", "Lslash", "lslash", "Scaron", "scaron",
+ /* 230 */
+ "Zcaron", "zcaron", "brokenbar", "Eth", "eth",
+ "Yacute", "yacute", "Thorn", "thorn", "minus",
+ /* 240 */
+ "multiply", "onesuperior", "twosuperior", "threesuperior", "onehalf",
+ "onequarter", "threequarters", "franc", "Gbreve", "gbreve",
+ /* 250 */
+ "Idot", "Scedilla", "scedilla", "Cacute", "cacute",
+ "Ccaron", "ccaron", "dmacron",
+ };
+
+
+#endif /* FT_CONFIG_OPTION_POSTSCRIPT_NAMES */
+
+
+ static FT_Error
+ load_format_20( TT_Face face,
+ FT_Stream stream,
+ FT_Long post_limit )
+ {
+ FT_Memory memory = stream->memory;
+ FT_Error error;
+
+ FT_Int num_glyphs;
+ FT_UShort num_names;
+
+ FT_UShort* glyph_indices = 0;
+ FT_Char** name_strings = 0;
+
+
+ if ( FT_READ_USHORT( num_glyphs ) )
+ goto Exit;
+
+ /* UNDOCUMENTED! The number of glyphs in this table can be smaller */
+ /* than the value in the maxp table (cf. cyberbit.ttf). */
+
+ /* There already exist fonts which have more than 32768 glyph names */
+ /* in this table, so the test for this threshold has been dropped. */
+
+ if ( num_glyphs > face->max_profile.numGlyphs )
+ {
+ error = SFNT_Err_Invalid_File_Format;
+ goto Exit;
+ }
+
+ /* load the indices */
+ {
+ FT_Int n;
+
+
+ if ( FT_NEW_ARRAY ( glyph_indices, num_glyphs ) ||
+ FT_FRAME_ENTER( num_glyphs * 2L ) )
+ goto Fail;
+
+ for ( n = 0; n < num_glyphs; n++ )
+ glyph_indices[n] = FT_GET_USHORT();
+
+ FT_FRAME_EXIT();
+ }
+
+ /* compute number of names stored in table */
+ {
+ FT_Int n;
+
+
+ num_names = 0;
+
+ for ( n = 0; n < num_glyphs; n++ )
+ {
+ FT_Int idx;
+
+
+ idx = glyph_indices[n];
+ if ( idx >= 258 )
+ {
+ idx -= 257;
+ if ( idx > num_names )
+ num_names = (FT_UShort)idx;
+ }
+ }
+ }
+
+ /* now load the name strings */
+ {
+ FT_UShort n;
+
+
+ if ( FT_NEW_ARRAY( name_strings, num_names ) )
+ goto Fail;
+
+ for ( n = 0; n < num_names; n++ )
+ {
+ FT_UInt len;
+
+
+ if ( FT_STREAM_POS() >= post_limit )
+ break;
+ else
+ {
+ FT_TRACE6(( "load_format_20: %d byte left in post table\n",
+ post_limit - FT_STREAM_POS() ));
+
+ if ( FT_READ_BYTE( len ) )
+ goto Fail1;
+ }
+
+ if ( (FT_Int)len > post_limit ||
+ FT_STREAM_POS() > post_limit - (FT_Int)len )
+ {
+ FT_ERROR(( "load_format_20:"
+ " exceeding string length (%d),"
+ " truncating at end of post table (%d byte left)\n",
+ len, post_limit - FT_STREAM_POS() ));
+ len = FT_MAX( 0, post_limit - FT_STREAM_POS() );
+ }
+
+ if ( FT_NEW_ARRAY( name_strings[n], len + 1 ) ||
+ FT_STREAM_READ( name_strings[n], len ) )
+ goto Fail1;
+
+ name_strings[n][len] = '\0';
+ }
+
+ if ( n < num_names )
+ {
+ FT_ERROR(( "load_format_20:"
+ " all entries in post table are already parsed,"
+ " using NULL names for gid %d - %d\n",
+ n, num_names - 1 ));
+ for ( ; n < num_names; n++ )
+ if ( FT_NEW_ARRAY( name_strings[n], 1 ) )
+ goto Fail1;
+ else
+ name_strings[n][0] = '\0';
+ }
+ }
+
+ /* all right, set table fields and exit successfully */
+ {
+ TT_Post_20 table = &face->postscript_names.names.format_20;
+
+
+ table->num_glyphs = (FT_UShort)num_glyphs;
+ table->num_names = (FT_UShort)num_names;
+ table->glyph_indices = glyph_indices;
+ table->glyph_names = name_strings;
+ }
+ return SFNT_Err_Ok;
+
+ Fail1:
+ {
+ FT_UShort n;
+
+
+ for ( n = 0; n < num_names; n++ )
+ FT_FREE( name_strings[n] );
+ }
+
+ Fail:
+ FT_FREE( name_strings );
+ FT_FREE( glyph_indices );
+
+ Exit:
+ return error;
+ }
+
+
+ static FT_Error
+ load_format_25( TT_Face face,
+ FT_Stream stream,
+ FT_Long post_limit )
+ {
+ FT_Memory memory = stream->memory;
+ FT_Error error;
+
+ FT_Int num_glyphs;
+ FT_Char* offset_table = 0;
+
+ FT_UNUSED( post_limit );
+
+
+ /* UNDOCUMENTED! This value appears only in the Apple TT specs. */
+ if ( FT_READ_USHORT( num_glyphs ) )
+ goto Exit;
+
+ /* check the number of glyphs */
+ if ( num_glyphs > face->max_profile.numGlyphs || num_glyphs > 258 )
+ {
+ error = SFNT_Err_Invalid_File_Format;
+ goto Exit;
+ }
+
+ if ( FT_NEW_ARRAY( offset_table, num_glyphs ) ||
+ FT_STREAM_READ( offset_table, num_glyphs ) )
+ goto Fail;
+
+ /* now check the offset table */
+ {
+ FT_Int n;
+
+
+ for ( n = 0; n < num_glyphs; n++ )
+ {
+ FT_Long idx = (FT_Long)n + offset_table[n];
+
+
+ if ( idx < 0 || idx > num_glyphs )
+ {
+ error = SFNT_Err_Invalid_File_Format;
+ goto Fail;
+ }
+ }
+ }
+
+ /* OK, set table fields and exit successfully */
+ {
+ TT_Post_25 table = &face->postscript_names.names.format_25;
+
+
+ table->num_glyphs = (FT_UShort)num_glyphs;
+ table->offsets = offset_table;
+ }
+
+ return SFNT_Err_Ok;
+
+ Fail:
+ FT_FREE( offset_table );
+
+ Exit:
+ return error;
+ }
+
+
+ static FT_Error
+ load_post_names( TT_Face face )
+ {
+ FT_Stream stream;
+ FT_Error error;
+ FT_Fixed format;
+ FT_ULong post_len;
+ FT_Long post_limit;
+
+
+ /* get a stream for the face's resource */
+ stream = face->root.stream;
+
+ /* seek to the beginning of the PS names table */
+ error = face->goto_table( face, TTAG_post, stream, &post_len );
+ if ( error )
+ goto Exit;
+
+ post_limit = FT_STREAM_POS() + post_len;
+
+ format = face->postscript.FormatType;
+
+ /* go to beginning of subtable */
+ if ( FT_STREAM_SKIP( 32 ) )
+ goto Exit;
+
+ /* now read postscript table */
+ if ( format == 0x00020000L )
+ error = load_format_20( face, stream, post_limit );
+ else if ( format == 0x00028000L )
+ error = load_format_25( face, stream, post_limit );
+ else
+ error = SFNT_Err_Invalid_File_Format;
+
+ face->postscript_names.loaded = 1;
+
+ Exit:
+ return error;
+ }
+
+
+ FT_LOCAL_DEF( void )
+ tt_face_free_ps_names( TT_Face face )
+ {
+ FT_Memory memory = face->root.memory;
+ TT_Post_Names names = &face->postscript_names;
+ FT_Fixed format;
+
+
+ if ( names->loaded )
+ {
+ format = face->postscript.FormatType;
+
+ if ( format == 0x00020000L )
+ {
+ TT_Post_20 table = &names->names.format_20;
+ FT_UShort n;
+
+
+ FT_FREE( table->glyph_indices );
+ table->num_glyphs = 0;
+
+ for ( n = 0; n < table->num_names; n++ )
+ FT_FREE( table->glyph_names[n] );
+
+ FT_FREE( table->glyph_names );
+ table->num_names = 0;
+ }
+ else if ( format == 0x00028000L )
+ {
+ TT_Post_25 table = &names->names.format_25;
+
+
+ FT_FREE( table->offsets );
+ table->num_glyphs = 0;
+ }
+ }
+ names->loaded = 0;
+ }
+
+
+ /*************************************************************************/
+ /* */
+ /* <Function> */
+ /* tt_face_get_ps_name */
+ /* */
+ /* <Description> */
+ /* Get the PostScript glyph name of a glyph. */
+ /* */
+ /* <Input> */
+ /* face :: A handle to the parent face. */
+ /* */
+ /* idx :: The glyph index. */
+ /* */
+ /* <InOut> */
+ /* PSname :: The address of a string pointer. Will be NULL in case */
+ /* of error, otherwise it is a pointer to the glyph name. */
+ /* */
+ /* You must not modify the returned string! */
+ /* */
+ /* <Output> */
+ /* FreeType error code. 0 means success. */
+ /* */
+ FT_LOCAL_DEF( FT_Error )
+ tt_face_get_ps_name( TT_Face face,
+ FT_UInt idx,
+ FT_String** PSname )
+ {
+ FT_Error error;
+ TT_Post_Names names;
+ FT_Fixed format;
+
+#ifdef FT_CONFIG_OPTION_POSTSCRIPT_NAMES
+ FT_Service_PsCMaps psnames;
+#endif
+
+
+ if ( !face )
+ return SFNT_Err_Invalid_Face_Handle;
+
+ if ( idx >= (FT_UInt)face->max_profile.numGlyphs )
+ return SFNT_Err_Invalid_Glyph_Index;
+
+#ifdef FT_CONFIG_OPTION_POSTSCRIPT_NAMES
+ psnames = (FT_Service_PsCMaps)face->psnames;
+ if ( !psnames )
+ return SFNT_Err_Unimplemented_Feature;
+#endif
+
+ names = &face->postscript_names;
+
+ /* `.notdef' by default */
+ *PSname = MAC_NAME( 0 );
+
+ format = face->postscript.FormatType;
+
+ if ( format == 0x00010000L )
+ {
+ if ( idx < 258 ) /* paranoid checking */
+ *PSname = MAC_NAME( idx );
+ }
+ else if ( format == 0x00020000L )
+ {
+ TT_Post_20 table = &names->names.format_20;
+
+
+ if ( !names->loaded )
+ {
+ error = load_post_names( face );
+ if ( error )
+ goto End;
+ }
+
+ if ( idx < (FT_UInt)table->num_glyphs )
+ {
+ FT_UShort name_index = table->glyph_indices[idx];
+
+
+ if ( name_index < 258 )
+ *PSname = MAC_NAME( name_index );
+ else
+ *PSname = (FT_String*)table->glyph_names[name_index - 258];
+ }
+ }
+ else if ( format == 0x00028000L )
+ {
+ TT_Post_25 table = &names->names.format_25;
+
+
+ if ( !names->loaded )
+ {
+ error = load_post_names( face );
+ if ( error )
+ goto End;
+ }
+
+ if ( idx < (FT_UInt)table->num_glyphs ) /* paranoid checking */
+ {
+ idx += table->offsets[idx];
+ *PSname = MAC_NAME( idx );
+ }
+ }
+
+ /* nothing to do for format == 0x00030000L */
+
+ End:
+ return SFNT_Err_Ok;
+ }
+
+
+/* END */