diff options
Diffstat (limited to 'src/3rdparty/freetype/src/psnames/psmodule.c')
| -rw-r--r-- | src/3rdparty/freetype/src/psnames/psmodule.c | 75 |
1 files changed, 39 insertions, 36 deletions
diff --git a/src/3rdparty/freetype/src/psnames/psmodule.c b/src/3rdparty/freetype/src/psnames/psmodule.c index e7d51e950e..8203a0465d 100644 --- a/src/3rdparty/freetype/src/psnames/psmodule.c +++ b/src/3rdparty/freetype/src/psnames/psmodule.c @@ -4,7 +4,7 @@ * * psnames module implementation (body). * - * Copyright (C) 1996-2022 by + * Copyright (C) 1996-2023 by * David Turner, Robert Wilhelm, and Werner Lemberg. * * This file is part of the FreeType project, and may only be used, @@ -57,7 +57,7 @@ /* the name, as in `A.swash' or `e.final'; in this case, the */ /* VARIANT_BIT is set in the return value. */ /* */ - static FT_UInt32 + FT_CALLBACK_DEF( FT_UInt32 ) ps_unicode_value( const char* glyph_name ) { /* If the name begins with `uni', then the glyph name may be a */ @@ -309,7 +309,7 @@ /* Build a table that maps Unicode values to glyph indices. */ - static FT_Error + FT_CALLBACK_DEF( FT_Error ) ps_unicodes_init( FT_Memory memory, PS_Unicodes table, FT_UInt num_glyphs, @@ -408,25 +408,22 @@ } - static FT_UInt + FT_CALLBACK_DEF( FT_UInt ) ps_unicodes_char_index( PS_Unicodes table, FT_UInt32 unicode ) { - PS_UniMap *min, *max, *mid, *result = NULL; + PS_UniMap *result = NULL; + PS_UniMap *min = table->maps; + PS_UniMap *max = min + table->num_maps; + PS_UniMap *mid = min + ( ( max - min ) >> 1 ); /* Perform a binary search on the table. */ - - min = table->maps; - max = min + table->num_maps - 1; - - while ( min <= max ) + while ( min < max ) { FT_UInt32 base_glyph; - mid = min + ( ( max - min ) >> 1 ); - if ( mid->unicode == unicode ) { result = mid; @@ -438,13 +435,15 @@ if ( base_glyph == unicode ) result = mid; /* remember match but continue search for base glyph */ - if ( min == max ) - break; - if ( base_glyph < unicode ) min = mid + 1; else - max = mid - 1; + max = mid; + + /* reasonable prediction in a continuous block */ + mid += unicode - base_glyph; + if ( mid >= max || mid < min ) + mid = min + ( ( max - min ) >> 1 ); } if ( result ) @@ -454,7 +453,7 @@ } - static FT_UInt32 + FT_CALLBACK_DEF( FT_UInt ) ps_unicodes_char_next( PS_Unicodes table, FT_UInt32 *unicode ) { @@ -465,14 +464,13 @@ { FT_UInt min = 0; FT_UInt max = table->num_maps; - FT_UInt mid; + FT_UInt mid = min + ( ( max - min ) >> 1 ); PS_UniMap* map; FT_UInt32 base_glyph; while ( min < max ) { - mid = min + ( ( max - min ) >> 1 ); map = table->maps + mid; if ( map->unicode == char_code ) @@ -490,6 +488,11 @@ min = mid + 1; else max = mid; + + /* reasonable prediction in a continuous block */ + mid += char_code - base_glyph; + if ( mid >= max || mid < min ) + mid = min + ( max - min ) / 2; } if ( result ) @@ -515,7 +518,7 @@ #endif /* FT_CONFIG_OPTION_ADOBE_GLYPH_LIST */ - static const char* + FT_CALLBACK_DEF( const char* ) ps_get_macintosh_name( FT_UInt name_index ) { if ( name_index >= FT_NUM_MAC_NAMES ) @@ -525,7 +528,7 @@ } - static const char* + FT_CALLBACK_DEF( const char* ) ps_get_standard_strings( FT_UInt sid ) { if ( sid >= FT_NUM_SID_NAMES ) @@ -540,13 +543,13 @@ FT_DEFINE_SERVICE_PSCMAPSREC( pscmaps_interface, - (PS_Unicode_ValueFunc) ps_unicode_value, /* unicode_value */ - (PS_Unicodes_InitFunc) ps_unicodes_init, /* unicodes_init */ - (PS_Unicodes_CharIndexFunc)ps_unicodes_char_index, /* unicodes_char_index */ - (PS_Unicodes_CharNextFunc) ps_unicodes_char_next, /* unicodes_char_next */ + ps_unicode_value, /* PS_Unicode_ValueFunc unicode_value */ + ps_unicodes_init, /* PS_Unicodes_InitFunc unicodes_init */ + ps_unicodes_char_index, /* PS_Unicodes_CharIndexFunc unicodes_char_index */ + ps_unicodes_char_next, /* PS_Unicodes_CharNextFunc unicodes_char_next */ - (PS_Macintosh_NameFunc) ps_get_macintosh_name, /* macintosh_name */ - (PS_Adobe_Std_StringsFunc) ps_get_standard_strings, /* adobe_std_strings */ + ps_get_macintosh_name, /* PS_Macintosh_NameFunc macintosh_name */ + ps_get_standard_strings, /* PS_Adobe_Std_StringsFunc adobe_std_strings */ t1_standard_encoding, /* adobe_std_encoding */ t1_expert_encoding /* adobe_expert_encoding */ @@ -557,13 +560,13 @@ FT_DEFINE_SERVICE_PSCMAPSREC( pscmaps_interface, - NULL, /* unicode_value */ - NULL, /* unicodes_init */ - NULL, /* unicodes_char_index */ - NULL, /* unicodes_char_next */ + NULL, /* PS_Unicode_ValueFunc unicode_value */ + NULL, /* PS_Unicodes_InitFunc unicodes_init */ + NULL, /* PS_Unicodes_CharIndexFunc unicodes_char_index */ + NULL, /* PS_Unicodes_CharNextFunc unicodes_char_next */ - (PS_Macintosh_NameFunc) ps_get_macintosh_name, /* macintosh_name */ - (PS_Adobe_Std_StringsFunc) ps_get_standard_strings, /* adobe_std_strings */ + ps_get_macintosh_name, /* PS_Macintosh_NameFunc macintosh_name */ + ps_get_standard_strings, /* PS_Adobe_Std_StringsFunc adobe_std_strings */ t1_standard_encoding, /* adobe_std_encoding */ t1_expert_encoding /* adobe_expert_encoding */ @@ -609,9 +612,9 @@ PUT_PS_NAMES_SERVICE( (void*)&pscmaps_interface ), /* module specific interface */ - (FT_Module_Constructor)NULL, /* module_init */ - (FT_Module_Destructor) NULL, /* module_done */ - (FT_Module_Requester) PUT_PS_NAMES_SERVICE( psnames_get_service ) /* get_interface */ + NULL, /* FT_Module_Constructor module_init */ + NULL, /* FT_Module_Destructor module_done */ + PUT_PS_NAMES_SERVICE( psnames_get_service ) /* FT_Module_Requester get_interface */ ) |