X-Git-Url: https://git.octo.it/?a=blobdiff_plain;f=libraries%2Ffreetype-2.0.5%2Fttpost.c;fp=libraries%2Ffreetype-2.0.5%2Fttpost.c;h=c228706927edb4296f0156cc232a1db5b9c0e1ab;hb=a1fe8fd19bb4f558150e52c0624869667b739877;hp=0000000000000000000000000000000000000000;hpb=e8f4081448f258adfbfa962b75d8392a7e152849;p=rrdtool.git diff --git a/libraries/freetype-2.0.5/ttpost.c b/libraries/freetype-2.0.5/ttpost.c new file mode 100644 index 0000000..c228706 --- /dev/null +++ b/libraries/freetype-2.0.5/ttpost.c @@ -0,0 +1,534 @@ +/***************************************************************************/ +/* */ +/* 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 +#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 + +#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; + } + + + /*************************************************************************/ + /* */ + /* */ + /* TT_Get_PS_Name */ + /* */ + /* */ + /* Gets the PostScript glyph name of a glyph. */ + /* */ + /* */ + /* 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! */ + /* */ + /* */ + /* 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 */