diff options
Diffstat (limited to 'nx-X11/extras/freetype2/src/psnames/psmodule.c')
| -rw-r--r-- | nx-X11/extras/freetype2/src/psnames/psmodule.c | 408 |
1 files changed, 408 insertions, 0 deletions
diff --git a/nx-X11/extras/freetype2/src/psnames/psmodule.c b/nx-X11/extras/freetype2/src/psnames/psmodule.c new file mode 100644 index 000000000..f6d6ae328 --- /dev/null +++ b/nx-X11/extras/freetype2/src/psnames/psmodule.c @@ -0,0 +1,408 @@ +/***************************************************************************/ +/* */ +/* psmodule.c */ +/* */ +/* PSNames module implementation (body). */ +/* */ +/* Copyright 1996-2001, 2002, 2003 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_OBJECTS_H +#include FT_SERVICE_POSTSCRIPT_CMAPS_H + +#include "psmodule.h" +#include "pstables.h" + +#include "psnamerr.h" + + +#ifndef FT_CONFIG_OPTION_NO_POSTSCRIPT_NAMES + + +#ifdef FT_CONFIG_OPTION_ADOBE_GLYPH_LIST + + + /* return the Unicode value corresponding to a given glyph. Note that */ + /* we do deal with glyph variants by detecting a non-initial dot in */ + /* the name, as in `A.swash' or `e.final', etc. */ + /* */ + static FT_UInt32 + ps_unicode_value( const char* glyph_name ) + { + FT_Int n; + char first = glyph_name[0]; + char temp[64]; + + + /* If the name begins with `uni', then the glyph name may be a */ + /* hard-coded unicode character code. */ + if ( glyph_name[0] == 'u' && + glyph_name[1] == 'n' && + glyph_name[2] == 'i' ) + { + /* determine whether the next four characters following are */ + /* hexadecimal. */ + + /* XXX: Add code to deal with ligatures, i.e. glyph names like */ + /* `uniXXXXYYYYZZZZ'... */ + + FT_Int count; + FT_ULong value = 0; + const char* p = glyph_name + 3; + + + for ( count = 4; count > 0; count--, p++ ) + { + char c = *p; + unsigned int d; + + + d = (unsigned char)c - '0'; + if ( d >= 10 ) + { + d = (unsigned char)c - 'A'; + if ( d >= 6 ) + d = 16; + else + d += 10; + } + + /* exit if a non-uppercase hexadecimal character was found */ + if ( d >= 16 ) + break; + + value = ( value << 4 ) + d; + } + + /* there must be exactly four hex digits */ + if ( ( *p == '\0' || *p == '.' ) && count == 0 ) + return value; + } + + /* If the name begins with `u', followed by four to six uppercase */ + /* hexadicimal digits, it is a hard-coded unicode character code. */ + if ( glyph_name[0] == 'u' ) + { + FT_Int count; + FT_ULong value = 0; + const char* p = glyph_name + 1; + + + for ( count = 6; count > 0; count--, p++ ) + { + char c = *p; + unsigned int d; + + + d = (unsigned char)c - '0'; + if ( d >= 10 ) + { + d = (unsigned char)c - 'A'; + if ( d >= 6 ) + d = 16; + else + d += 10; + } + + if ( d >= 16 ) + break; + + value = ( value << 4 ) + d; + } + + if ( ( *p == '\0' || *p == '.' ) && count <= 2 ) + return value; + } + + /* look for a non-initial dot in the glyph name in order to */ + /* sort-out variants like `A.swash', `e.final', etc. */ + { + const char* p; + int len; + + + p = glyph_name; + + while ( *p && *p != '.' ) + p++; + + len = (int)( p - glyph_name ); + + if ( *p && len < 64 ) + { + ft_strncpy( temp, glyph_name, len ); + temp[len] = 0; + glyph_name = temp; + } + } + + /* now, look up the glyph in the Adobe Glyph List */ + for ( n = 0; n < NUM_ADOBE_GLYPHS; n++ ) + { + const char* name = sid_standard_names[n]; + + + if ( first == name[0] && ft_strcmp( glyph_name, name ) == 0 ) + return ps_names_to_unicode[n]; + } + + /* not found, there is probably no Unicode value for this glyph name */ + return 0; + } + + + /* ft_qsort callback to sort the unicode map */ + FT_CALLBACK_DEF( int ) + compare_uni_maps( const void* a, + const void* b ) + { + PS_UniMap* map1 = (PS_UniMap*)a; + PS_UniMap* map2 = (PS_UniMap*)b; + + + return ( map1->unicode - map2->unicode ); + } + + + /* Builds a table that maps Unicode values to glyph indices */ + static FT_Error + ps_unicodes_init( FT_Memory memory, + FT_UInt num_glyphs, + const char** glyph_names, + PS_Unicodes* table ) + { + FT_Error error; + + + /* we first allocate the table */ + table->num_maps = 0; + table->maps = 0; + + if ( !FT_NEW_ARRAY( table->maps, num_glyphs ) ) + { + FT_UInt n; + FT_UInt count; + PS_UniMap* map; + FT_UInt32 uni_char; + + + map = table->maps; + + for ( n = 0; n < num_glyphs; n++ ) + { + const char* gname = glyph_names[n]; + + + if ( gname ) + { + uni_char = ps_unicode_value( gname ); + + if ( uni_char != 0 && uni_char != 0xFFFFL ) + { + map->unicode = (FT_UInt)uni_char; + map->glyph_index = n; + map++; + } + } + } + + /* now, compress the table a bit */ + count = (FT_UInt)( map - table->maps ); + + if ( count > 0 && FT_REALLOC( table->maps, + num_glyphs * sizeof ( PS_UniMap ), + count * sizeof ( PS_UniMap ) ) ) + count = 0; + + if ( count == 0 ) + { + FT_FREE( table->maps ); + if ( !error ) + error = PSnames_Err_Invalid_Argument; /* no unicode chars here! */ + } + else + /* sort the table in increasing order of unicode values */ + ft_qsort( table->maps, count, sizeof ( PS_UniMap ), compare_uni_maps ); + + table->num_maps = count; + } + + return error; + } + + + static FT_UInt + ps_unicodes_char_index( PS_Unicodes* table, + FT_ULong unicode ) + { + PS_UniMap *min, *max, *mid; + + + /* perform a binary search on the table */ + + min = table->maps; + max = min + table->num_maps - 1; + + while ( min <= max ) + { + mid = min + ( max - min ) / 2; + if ( mid->unicode == unicode ) + return mid->glyph_index; + + if ( min == max ) + break; + + if ( mid->unicode < unicode ) + min = mid + 1; + else + max = mid - 1; + } + + return 0xFFFFU; + } + + + static FT_ULong + ps_unicodes_char_next( PS_Unicodes* table, + FT_ULong unicode ) + { + PS_UniMap *min, *max, *mid; + + + unicode++; + /* perform a binary search on the table */ + + min = table->maps; + max = min + table->num_maps - 1; + + while ( min <= max ) + { + mid = min + ( max - min ) / 2; + if ( mid->unicode == unicode ) + return unicode; + + if ( min == max ) + break; + + if ( mid->unicode < unicode ) + min = mid + 1; + else + max = mid - 1; + } + + if ( max < table->maps ) + max = table->maps; + + while ( max < table->maps + table->num_maps ) + { + if ( unicode < max->unicode ) + return max->unicode; + max++; + } + + return 0; + } + + +#endif /* FT_CONFIG_OPTION_ADOBE_GLYPH_LIST */ + + + static const char* + ps_get_macintosh_name( FT_UInt name_index ) + { + if ( name_index >= 258 ) + name_index = 0; + + return ps_glyph_names[mac_standard_names[name_index]]; + } + + + static const char* + ps_get_standard_strings( FT_UInt sid ) + { + return ( sid < NUM_SID_GLYPHS ? sid_standard_names[sid] : 0 ); + } + + + static + const FT_Service_PsCMapsRec pscmaps_interface = + { +#ifdef FT_CONFIG_OPTION_ADOBE_GLYPH_LIST + + (PS_Unicode_ValueFunc) ps_unicode_value, + (PS_Unicodes_InitFunc) ps_unicodes_init, + (PS_Unicodes_CharIndexFunc)ps_unicodes_char_index, + (PS_Unicodes_CharNextFunc) ps_unicodes_char_next, + +#else + + 0, + 0, + 0, + 0, + +#endif /* FT_CONFIG_OPTION_ADOBE_GLYPH_LIST */ + + (PS_Macintosh_Name_Func) ps_get_macintosh_name, + (PS_Adobe_Std_Strings_Func)ps_get_standard_strings, + + t1_standard_encoding, + t1_expert_encoding + }; + + + static const FT_ServiceDescRec pscmaps_services[] = + { + { FT_SERVICE_ID_POSTSCRIPT_CMAPS, &pscmaps_interface }, + { NULL, NULL } + }; + + + static FT_Pointer + psnames_get_service( FT_Module module, + const char* service_id ) + { + FT_UNUSED( module ); + + return ft_service_list_lookup( pscmaps_services, service_id ); + } + +#endif /* !FT_CONFIG_OPTION_NO_POSTSCRIPT_NAMES */ + + + + FT_CALLBACK_TABLE_DEF + const FT_Module_Class psnames_module_class = + { + 0, /* this is not a font driver, nor a renderer */ + sizeof ( FT_ModuleRec ), + + "psnames", /* driver name */ + 0x10000L, /* driver version */ + 0x20000L, /* driver requires FreeType 2 or above */ + +#ifdef FT_CONFIG_OPTION_NO_POSTSCRIPT_NAMES + 0, + (FT_Module_Constructor)0, + (FT_Module_Destructor) 0, + (FT_Module_Requester) 0 +#else + (void*)&pscmaps_interface, /* module specific interface */ + (FT_Module_Constructor)0, + (FT_Module_Destructor) 0, + (FT_Module_Requester) psnames_get_service +#endif + }; + + +/* END */ |