+++ /dev/null
-/***************************************************************************/
-/* */
-/* ttpost.c */
-/* */
-/* Postcript name table processing for TrueType and OpenType fonts */
-/* (body). */
-/* */
-/* Copyright 1996-2001 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_STREAM_H
-#include FT_TRUETYPE_TAGS_H
-#include "ttpost.h"
-#include "ttload.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 <freetype/internal/psnames.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 ) TT_Post_Default_Names[x]
-
- /* the 258 default Mac PS glyph names */
-
- FT_String* 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_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 ( 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->root.num_glyphs )
- {
- error = SFNT_Err_Invalid_File_Format;
- goto Exit;
- }
-
- /* load the indices */
- {
- FT_Int n;
-
-
- if ( ALLOC_ARRAY ( glyph_indices, num_glyphs, FT_UShort ) ||
- ACCESS_Frame( num_glyphs * 2L ) )
- goto Fail;
-
- for ( n = 0; n < num_glyphs; n++ )
- glyph_indices[n] = GET_UShort();
-
- FORGET_Frame();
- }
-
- /* compute number of names stored in table */
- {
- FT_Int n;
-
-
- num_names = 0;
-
- for ( n = 0; n < num_glyphs; n++ )
- {
- FT_Int index;
-
-
- index = glyph_indices[n];
- if ( index >= 258 )
- {
- index -= 257;
- if ( index > num_names )
- num_names = (FT_UShort)index;
- }
- }
- }
-
- /* now load the name strings */
- {
- FT_UShort n;
-
-
- if ( ALLOC_ARRAY( name_strings, num_names, FT_Char* ) )
- goto Fail;
-
- for ( n = 0; n < num_names; n++ )
- {
- FT_UInt len;
-
-
- if ( READ_Byte ( len ) ||
- ALLOC_ARRAY( name_strings[n], len + 1, FT_Char ) ||
- FILE_Read ( name_strings[n], len ) )
- goto Fail1;
-
- name_strings[n][len] = '\0';
- }
- }
-
- /* all right, set table fields and exit successfuly */
- {
- 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++ )
- FREE( name_strings[n] );
- }
-
- Fail:
- FREE( name_strings );
- FREE( glyph_indices );
-
- Exit:
- return error;
- }
-
-
- static FT_Error
- Load_Format_25( TT_Face face,
- FT_Stream stream )
- {
- FT_Memory memory = stream->memory;
- FT_Error error;
-
- FT_Int num_glyphs;
- FT_Char* offset_table = 0;
-
-
- /* UNDOCUMENTED! This value appears only in the Apple TT specs. */
- if ( READ_UShort( num_glyphs ) )
- goto Exit;
-
- /* check the number of glyphs */
- if ( num_glyphs > face->root.num_glyphs || num_glyphs > 258 )
- {
- error = SFNT_Err_Invalid_File_Format;
- goto Exit;
- }
-
- if ( ALLOC ( offset_table, num_glyphs ) ||
- FILE_Read( offset_table, num_glyphs ) )
- goto Fail;
-
- /* now check the offset table */
- {
- FT_Int n;
-
-
- for ( n = 0; n < num_glyphs; n++ )
- {
- FT_Long index = (FT_Long)n + offset_table[n];
-
-
- if ( index < 0 || index > num_glyphs )
- {
- error = SFNT_Err_Invalid_File_Format;
- goto Fail;
- }
- }
- }
-
- /* OK, set table fields and exit successfuly */
- {
- 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:
- FREE( offset_table );
-
- Exit:
- return error;
- }
-
-
- static FT_Error
- Load_Post_Names( TT_Face face )
- {
- FT_Stream stream;
- FT_Error error;
- FT_Fixed format;
-
-
- /* 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, 0 );
- if ( error )
- goto Exit;
-
- format = face->postscript.FormatType;
-
- /* go to beginning of subtable */
- if ( FILE_Skip( 32 ) )
- goto Exit;
-
- /* now read postscript table */
- switch ( format )
- {
- case 0x00020000L:
- error = Load_Format_20( face, stream );
- break;
-
- case 0x00028000L:
- error = Load_Format_25( face, stream );
- break;
-
- default:
- error = SFNT_Err_Invalid_File_Format;
- }
-
- face->postscript_names.loaded = 1;
-
- Exit:
- return error;
- }
-
-
- FT_LOCAL_DEF void
- TT_Free_Post_Names( TT_Face face )
- {
- FT_Memory memory = face->root.memory;
- TT_Post_Names* names = &face->postscript_names;
-
-
- if ( names->loaded )
- {
- switch ( face->postscript.FormatType )
- {
- case 0x00020000L:
- {
- TT_Post_20* table = &names->names.format_20;
- FT_UShort n;
-
-
- FREE( table->glyph_indices );
- table->num_glyphs = 0;
-
- for ( n = 0; n < table->num_names; n++ )
- FREE( table->glyph_names[n] );
-
- FREE( table->glyph_names );
- table->num_names = 0;
- }
- break;
-
- case 0x00028000L:
- {
- TT_Post_25* table = &names->names.format_25;
-
-
- FREE( table->offsets );
- table->num_glyphs = 0;
- }
- break;
- }
- }
- names->loaded = 0;
- }
-
-
- /*************************************************************************/
- /* */
- /* <Function> */
- /* TT_Get_PS_Name */
- /* */
- /* <Description> */
- /* Gets the PostScript glyph name of a glyph. */
- /* */
- /* <Input> */
- /* face :: A handle to the parent face. */
- /* */
- /* index :: The glyph index. */
- /* */
- /* 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_Get_PS_Name( TT_Face face,
- FT_UInt index,
- FT_String** PSname )
- {
- FT_Error error;
- TT_Post_Names* names;
-
-#ifdef FT_CONFIG_OPTION_POSTSCRIPT_NAMES
- PSNames_Interface* psnames;
-#endif
-
-
- if ( !face )
- return SFNT_Err_Invalid_Face_Handle;
-
- if ( index >= (FT_UInt)face->root.num_glyphs )
- return SFNT_Err_Invalid_Glyph_Index;
-
-#ifdef FT_CONFIG_OPTION_POSTSCRIPT_NAMES
- psnames = (PSNames_Interface*)face->psnames;
- if ( !psnames )
- return SFNT_Err_Unimplemented_Feature;
-#endif
-
- names = &face->postscript_names;
-
- /* `.notdef' by default */
- *PSname = MAC_NAME( 0 );
-
- switch ( face->postscript.FormatType )
- {
- case 0x00010000L:
- if ( index < 258 ) /* paranoid checking */
- *PSname = MAC_NAME( index );
- break;
-
- case 0x00020000L:
- {
- TT_Post_20* table = &names->names.format_20;
-
-
- if ( !names->loaded )
- {
- error = Load_Post_Names( face );
- if ( error )
- break;
- }
-
- if ( index < (FT_UInt)table->num_glyphs )
- {
- FT_UShort name_index = table->glyph_indices[index];
-
-
- if ( name_index < 258 )
- *PSname = MAC_NAME( name_index );
- else
- *PSname = (FT_String*)table->glyph_names[name_index - 258];
- }
- }
- break;
-
- case 0x00028000L:
- {
- TT_Post_25* table = &names->names.format_25;
-
-
- if ( !names->loaded )
- {
- error = Load_Post_Names( face );
- if ( error )
- break;
- }
-
- if ( index < (FT_UInt)table->num_glyphs ) /* paranoid checking */
- {
- index += table->offsets[index];
- *PSname = MAC_NAME( index );
- }
- }
- break;
-
- case 0x00030000L:
- break; /* nothing to do */
- }
-
- return SFNT_Err_Ok;
- }
-
-
-/* END */
projects / rrdtool.git / blobdiff