Commit 347a714c5438218c0294290d5b26993df6829e02
2002-05-15T06:16:57
Initial revision
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diff --git a/src/type42/module.mk b/src/type42/module.mk
new file mode 100644
index 0000000..ceaea41
--- /dev/null
+++ b/src/type42/module.mk
@@ -0,0 +1,22 @@
+#
+# FreeType 2 Type42 module definition
+#
+
+
+# Copyright 2002 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.
+
+
+make_module_list: add_type42_driver
+
+add_type42_driver:
+ $(OPEN_DRIVER)t42_driver_class$(CLOSE_DRIVER)
+ $(ECHO_DRIVER)type42 $(ECHO_DRIVER_DESC)Type 42 font files with no known extension$(ECHO_DRIVER_DONE)
+
+# EOF
diff --git a/src/type42/rules.mk b/src/type42/rules.mk
new file mode 100644
index 0000000..a55f42e
--- /dev/null
+++ b/src/type42/rules.mk
@@ -0,0 +1,66 @@
+#
+# FreeType 2 Type42 driver configuration rules
+#
+
+
+# Copyright 2002 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.
+
+
+# Type42 driver directory
+#
+T42_DIR := $(SRC_)type42
+T42_DIR_ := $(T42_DIR)$(SEP)
+
+
+# compilation flags for the driver
+#
+T42_COMPILE := $(FT_COMPILE) $I$(T42_DIR)
+
+
+# Type42 driver source
+#
+T42_DRV_SRC := $(T42_DIR_)t42drivr.c
+
+# Type42 driver headers
+#
+T42_DRV_H :=
+
+
+# Type42 driver object(s)
+#
+# T42_DRV_OBJ_M is used during `multi' builds
+# T42_DRV_OBJ_S is used during `single' builds
+#
+T42_DRV_OBJ_M := $(T42_DRV_SRC:$(T42_DIR_)%.c=$(OBJ_)%.$O)
+T42_DRV_OBJ_S := $(OBJ_)t42drivr.$O
+
+# Type42 driver source file for single build
+#
+T42_DRV_SRC_S := $(T42_DIR_)t42drivr.c
+
+
+# Type42 driver - single object
+#
+$(T42_DRV_OBJ_S): $(T42_DRV_SRC_S) $(T42_DRV_SRC) $(FREETYPE_H) $(T42_DRV_H)
+ $(T42_COMPILE) $T$@ $(T42_DRV_SRC_S)
+
+
+# Type42 driver - multiple objects
+#
+$(OBJ_)%.$O: $(T42_DIR_)%.c $(FREETYPE_H) $(T42_DRV_H)
+ $(T42_COMPILE) $T$@ $<
+
+
+# update main driver object lists
+#
+DRV_OBJS_S += $(T42_DRV_OBJ_S)
+DRV_OBJS_M += $(T42_DRV_OBJ_M)
+
+# EOF
diff --git a/src/type42/t42drivr.c b/src/type42/t42drivr.c
new file mode 100644
index 0000000..81e0e8a
--- /dev/null
+++ b/src/type42/t42drivr.c
@@ -0,0 +1,2138 @@
+/***************************************************************************/
+/* */
+/* t42drivr.c */
+/* */
+/* FreeType font driver for Type 42 fonts (body only). */
+/* */
+/* Copyright 2002 by Roberto Alameda. */
+/* */
+/* 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>
+#define FT_ERR_PREFIX T42_Err_
+#define FT_ERR_BASE FT_Mod_Err_Type42
+
+#include FT_CONFIG_STANDARD_LIBRARY_H
+
+#include FT_INTERNAL_DEBUG_H
+#include FT_CONFIG_CONFIG_H
+
+#include FT_ERRORS_H
+#include FT_FREETYPE_H
+#include FT_TYPE1_TABLES_H
+#include FT_LIST_H
+
+#include FT_INTERNAL_DRIVER_H
+#include FT_INTERNAL_OBJECTS_H
+#include FT_INTERNAL_TYPE1_TYPES_H
+#include FT_INTERNAL_POSTSCRIPT_AUX_H
+#include FT_INTERNAL_STREAM_H
+
+
+ /********************* Data Definitions ******************/
+
+ typedef enum T42_EncodingType_
+ {
+ T42_ENCODING_TYPE_NONE = 0,
+ T42_ENCODING_TYPE_ARRAY,
+ T42_ENCODING_TYPE_STANDARD,
+ T42_ENCODING_TYPE_EXPERT,
+ T42_ENCODING_TYPE_ISOLATIN1
+
+ } T42_EncodingType;
+
+
+ typedef struct T42_Font_
+ {
+ /* font info dictionary */
+ PS_FontInfoRec font_info;
+
+ /* top-level dictionary */
+ FT_String* font_name;
+
+ T42_EncodingType encoding_type;
+ T1_EncodingRec encoding;
+
+ FT_Byte* charstrings_block;
+ FT_Byte* glyph_names_block;
+
+ FT_Int num_glyphs;
+ FT_String** glyph_names; /* array of glyph names */
+ FT_Byte** charstrings; /* array of glyph charstrings */
+ FT_Int* charstrings_len;
+
+ FT_Byte paint_type;
+ FT_Byte font_type;
+ FT_Matrix font_matrix; /* From FontMatrix field: a, b, c, d */
+ FT_Vector font_offset; /* From FontMatrix field: tx, ty */
+ FT_BBox font_bbox;
+
+ FT_Int stroke_width;
+
+ } T42_FontRec, *T42_Font;
+
+
+ typedef struct T42_FaceRec_
+ {
+ FT_FaceRec root;
+ T42_FontRec type42;
+ void* psnames;
+ void* psaux;
+ void* afm_data;
+ FT_Byte* ttf_data;
+ FT_ULong ttf_size;
+ FT_Face ttf_face;
+ FT_CharMapRec charmaprecs[2];
+ FT_CharMap charmaps[2];
+ PS_Unicodes unicode_map;
+
+ } T42_FaceRec, *T42_Face;
+
+
+ typedef struct T42_DriverRec_
+ {
+ FT_DriverRec root;
+ FT_Driver_Class ttclazz;
+ void* extension_component;
+
+ } T42_DriverRec, *T42_Driver;
+
+
+ typedef struct T42_SizeRec_
+ {
+ FT_SizeRec root;
+ FT_Size ttsize;
+
+ } T42_SizeRec, *T42_Size;
+
+
+ typedef struct T42_GlyphSlotRec_
+ {
+ FT_GlyphSlotRec root;
+ FT_GlyphSlot ttslot;
+
+ } T42_GlyphSlotRec, *T42_GlyphSlot;
+
+
+ /*********** Parser definitions *************/
+
+ typedef struct T42_ParserRec_
+ {
+ PS_ParserRec root;
+ FT_Stream stream;
+
+ FT_Byte* base_dict;
+ FT_Int base_len;
+
+ FT_Byte in_memory;
+
+ } T42_ParserRec, *T42_Parser;
+
+
+ typedef struct T42_Loader_
+ {
+ T42_ParserRec parser; /* parser used to read the stream */
+
+ FT_Int num_chars; /* number of characters in encoding */
+ PS_TableRec encoding_table; /* PS_Table used to store the */
+ /* encoding character names */
+
+ FT_Int num_glyphs;
+ PS_TableRec glyph_names;
+ PS_TableRec charstrings;
+
+ } T42_LoaderRec, *T42_Loader;
+
+
+ /*********************** Prototypes *********************/
+
+ static void
+ parse_font_name( T42_Face face,
+ T42_Loader loader );
+ static void
+ parse_font_bbox( T42_Face face,
+ T42_Loader loader );
+ static void
+ parse_font_matrix( T42_Face face,
+ T42_Loader loader );
+ static void
+ parse_encoding( T42_Face face,
+ T42_Loader loader );
+ static void
+ parse_charstrings( T42_Face face,
+ T42_Loader loader );
+ static void
+ parse_sfnts( T42_Face face,
+ T42_Loader loader );
+
+
+ static const
+ T1_FieldRec t42_keywords[] = {
+
+#undef FT_STRUCTURE
+#define FT_STRUCTURE T1_FontInfo
+#undef T1CODE
+#define T1CODE T1_FIELD_LOCATION_FONT_INFO
+
+ T1_FIELD_STRING ( "version", version )
+ T1_FIELD_STRING ( "Notice", notice )
+ T1_FIELD_STRING ( "FullName", full_name )
+ T1_FIELD_STRING ( "FamilyName", family_name )
+ T1_FIELD_STRING ( "Weight", weight )
+ T1_FIELD_NUM ( "ItalicAngle", italic_angle )
+ T1_FIELD_TYPE_BOOL( "isFixedPitch", is_fixed_pitch )
+ T1_FIELD_NUM ( "UnderlinePosition", underline_position )
+ T1_FIELD_NUM ( "UnderlineThickness", underline_thickness )
+
+#undef FT_STRUCTURE
+#define FT_STRUCTURE T42_FontRec
+#undef T1CODE
+#define T1CODE T1_FIELD_LOCATION_FONT_DICT
+
+ T1_FIELD_NUM( "PaintType", paint_type )
+ T1_FIELD_NUM( "FontType", font_type )
+ T1_FIELD_NUM( "StrokeWidth", stroke_width )
+
+ T1_FIELD_CALLBACK( "FontName", parse_font_name )
+ T1_FIELD_CALLBACK( "FontBBox", parse_font_bbox )
+ T1_FIELD_CALLBACK( "FontMatrix", parse_font_matrix )
+ T1_FIELD_CALLBACK( "Encoding", parse_encoding )
+ T1_FIELD_CALLBACK( "CharStrings", parse_charstrings )
+ T1_FIELD_CALLBACK( "sfnts", parse_sfnts )
+
+ { 0, T1_FIELD_LOCATION_CID_INFO, T1_FIELD_TYPE_NONE, 0, 0, 0, 0, 0 }
+ };
+
+
+#define T1_Add_Table( p, i, o, l ) (p)->funcs.add( (p), i, o, l )
+#define T1_Done_Table( p ) \
+ do \
+ { \
+ if ( (p)->funcs.done ) \
+ (p)->funcs.done( p ); \
+ } while ( 0 )
+#define T1_Release_Table( p ) \
+ do \
+ { \
+ if ( (p)->funcs.release ) \
+ (p)->funcs.release( p ); \
+ } while ( 0 )
+
+#define T1_Skip_Spaces( p ) (p)->root.funcs.skip_spaces( &(p)->root )
+#define T1_Skip_Alpha( p ) (p)->root.funcs.skip_alpha ( &(p)->root )
+
+#define T1_ToInt( p ) (p)->root.funcs.to_int( &(p)->root )
+#define T1_ToFixed( p, t ) (p)->root.funcs.to_fixed( &(p)->root, t )
+
+#define T1_ToCoordArray( p, m, c ) \
+ (p)->root.funcs.to_coord_array( &(p)->root, m, c )
+#define T1_ToFixedArray( p, m, f, t ) \
+ (p)->root.funcs.to_fixed_array( &(p)->root, m, f, t )
+#define T1_ToToken( p, t ) \
+ (p)->root.funcs.to_token( &(p)->root, t )
+#define T1_ToTokenArray( p, t, m, c ) \
+ (p)->root.funcs.to_token_array( &(p)->root, t, m, c )
+
+#define T1_Load_Field( p, f, o, m, pf ) \
+ (p)->root.funcs.load_field( &(p)->root, f, o, m, pf )
+#define T1_Load_Field_Table( p, f, o, m, pf ) \
+ (p)->root.funcs.load_field_table( &(p)->root, f, o, m, pf )
+
+
+ /********************* Parsing Functions ******************/
+
+ static FT_Error
+ T42_New_Parser( T42_Parser parser,
+ FT_Stream stream,
+ FT_Memory memory,
+ PSAux_Service psaux )
+ {
+ FT_Error error = T42_Err_Ok;
+ FT_Long size;
+
+
+ psaux->ps_parser_funcs->init( &parser->root, 0, 0, memory );
+
+ parser->stream = stream;
+ parser->base_len = 0;
+ parser->base_dict = 0;
+ parser->in_memory = 0;
+
+ /*******************************************************************/
+ /* */
+ /* Here a short summary of what is going on: */
+ /* */
+ /* When creating a new Type 42 parser, we try to locate and load */
+ /* the base dictionary, loading the whole font into memory. */
+ /* */
+ /* When `loading' the base dictionary, we only setup pointers in */
+ /* the case of a memory-based stream. Otherwise, we allocate */
+ /* and load the base dictionary in it. */
+ /* */
+ /* parser->in_memory is set if we have a memory stream. */
+ /* */
+
+ if ( FT_STREAM_SEEK( 0L ) )
+ goto Exit;
+
+ size = stream->size;
+
+ /* now, try to load `size' bytes of the `base' dictionary we */
+ /* found previously */
+
+ /* if it is a memory-based resource, set up pointers */
+ if ( !stream->read )
+ {
+ parser->base_dict = (FT_Byte*)stream->base + stream->pos;
+ parser->base_len = size;
+ parser->in_memory = 1;
+
+ /* check that the `size' field is valid */
+ if ( FT_STREAM_SKIP( size ) )
+ goto Exit;
+ }
+ else
+ {
+ /* read segment in memory */
+ if (FT_ALLOC( parser->base_dict, size ) ||
+ FT_STREAM_READ( parser->base_dict, size ) )
+ goto Exit;
+ parser->base_len = size;
+ }
+
+ /* Now check font format; we must see `%!PS-TrueTypeFont' */
+ if (size <= 17 ||
+ ( ft_strncmp( (const char*)parser->base_dict,
+ "%!PS-TrueTypeFont", 17) ) )
+ error = T42_Err_Unknown_File_Format;
+ else
+ {
+ parser->root.base = parser->base_dict;
+ parser->root.cursor = parser->base_dict;
+ parser->root.limit = parser->root.cursor + parser->base_len;
+ }
+
+ Exit:
+ if ( error && !parser->in_memory )
+ FT_FREE( parser->base_dict );
+
+ return error;
+ }
+
+
+ static void
+ T42_Finalize_Parser( T42_Parser parser )
+ {
+ FT_Memory memory = parser->root.memory;
+
+
+ /* free the base dictionary only when we have a disk stream */
+ if ( !parser->in_memory )
+ FT_FREE( parser->base_dict );
+
+ parser->root.funcs.done( &parser->root );
+ }
+
+
+ static int
+ is_alpha( FT_Byte c )
+ {
+ /* Note: we must accept "+" as a valid character, as it is used in */
+ /* embedded type1 fonts in PDF documents. */
+ /* */
+ return ( ft_isalnum( c ) ||
+ c == '.' ||
+ c == '_' ||
+ c == '-' ||
+ c == '+' );
+ }
+
+
+ static int
+ is_space( FT_Byte c )
+ {
+ return ( c == ' ' || c == '\t' || c == '\r' || c == '\n' );
+ }
+
+
+ static void
+ parse_font_name( T42_Face face,
+ T42_Loader loader )
+ {
+ T42_Parser parser = &loader->parser;
+ FT_Error error;
+ FT_Memory memory = parser->root.memory;
+ FT_Int len;
+ FT_Byte* cur;
+ FT_Byte* cur2;
+ FT_Byte* limit;
+
+
+ T1_Skip_Spaces( parser );
+
+ cur = parser->root.cursor;
+ limit = parser->root.limit;
+
+ if ( cur >= limit - 1 ||
+ ( *cur != '/' && *cur != '(') )
+ return;
+
+ cur++;
+ cur2 = cur;
+ while ( cur2 < limit && is_alpha( *cur2 ) )
+ cur2++;
+
+ len = (FT_Int)( cur2 - cur );
+ if ( len > 0 )
+ {
+ if ( FT_ALLOC( face->type42.font_name, len + 1 ) )
+ {
+ parser->root.error = error;
+ return;
+ }
+
+ FT_MEM_COPY( face->type42.font_name, cur, len );
+ face->type42.font_name[len] = '\0';
+ }
+ parser->root.cursor = cur2;
+ }
+
+
+ static void
+ parse_font_bbox( T42_Face face,
+ T42_Loader loader )
+ {
+ T42_Parser parser = &loader->parser;
+ FT_BBox* bbox = &face->type42.font_bbox;
+
+ bbox->xMin = T1_ToInt( parser );
+ bbox->yMin = T1_ToInt( parser );
+ bbox->xMax = T1_ToInt( parser );
+ bbox->yMax = T1_ToInt( parser );
+ }
+
+
+ static void
+ parse_font_matrix( T42_Face face,
+ T42_Loader loader )
+ {
+ T42_Parser parser = &loader->parser;
+ FT_Matrix* matrix = &face->type42.font_matrix;
+ FT_Vector* offset = &face->type42.font_offset;
+ FT_Face root = (FT_Face)&face->root;
+ FT_Fixed temp[6];
+ FT_Fixed temp_scale;
+
+
+ /* XXX: Are these three lines necessary */
+ if ( matrix->xx || matrix->yx )
+ /* with synthetic fonts, it's possible we get here twice */
+ return;
+
+ (void)T1_ToFixedArray( parser, 6, temp, 3 );
+
+ temp_scale = ABS( temp[3] );
+
+ /* Set Units per EM based on FontMatrix values. We set the value to */
+ /* 1000 / temp_scale, because temp_scale was already multiplied by */
+ /* 1000 (in t1_tofixed, from psobjs.c). */
+
+ root->units_per_EM = (FT_UShort)( FT_DivFix( 1000 * 0x10000L,
+ temp_scale ) >> 16 );
+
+ /* we need to scale the values by 1.0/temp_scale */
+ if ( temp_scale != 0x10000L ) {
+ temp[0] = FT_DivFix( temp[0], temp_scale );
+ temp[1] = FT_DivFix( temp[1], temp_scale );
+ temp[2] = FT_DivFix( temp[2], temp_scale );
+ temp[4] = FT_DivFix( temp[4], temp_scale );
+ temp[5] = FT_DivFix( temp[5], temp_scale );
+ temp[3] = 0x10000L;
+ }
+
+ matrix->xx = temp[0];
+ matrix->yx = temp[1];
+ matrix->xy = temp[2];
+ matrix->yy = temp[3];
+
+ /* note that the offsets must be expressed in integer font units */
+ offset->x = temp[4] >> 16;
+ offset->y = temp[5] >> 16;
+ }
+
+
+ static void
+ parse_encoding( T42_Face face,
+ T42_Loader loader )
+ {
+ T42_Parser parser = &loader->parser;
+ FT_Byte* cur = parser->root.cursor;
+ FT_Byte* limit = parser->root.limit;
+
+ PSAux_Service psaux = (PSAux_Service)face->psaux;
+
+
+ /* skip whitespace */
+ while ( is_space( *cur ) )
+ {
+ cur++;
+ if ( cur >= limit )
+ {
+ FT_ERROR(( "parse_encoding: out of bounds!\n" ));
+ parser->root.error = T42_Err_Invalid_File_Format;
+ return;
+ }
+ }
+
+ /* if we have a number, then the encoding is an array, */
+ /* and we must load it now */
+ if ( (FT_Byte)( *cur - '0' ) < 10 )
+ {
+ T1_Encoding encode = &face->type42.encoding;
+ FT_Int count, n;
+ PS_Table char_table = &loader->encoding_table;
+ FT_Memory memory = parser->root.memory;
+ FT_Error error;
+
+
+ /* read the number of entries in the encoding, should be 256 */
+ count = T1_ToInt( parser );
+ if ( parser->root.error )
+ return;
+
+ /* we use a T1_Table to store our charnames */
+ loader->num_chars = encode->num_chars = count;
+ if ( FT_NEW_ARRAY( encode->char_index, count ) ||
+ FT_NEW_ARRAY( encode->char_name, count ) ||
+ FT_SET_ERROR( psaux->ps_table_funcs->init(
+ char_table, count, memory ) ) )
+ {
+ parser->root.error = error;
+ return;
+ }
+
+ /* We need to `zero' out encoding_table.elements */
+ for ( n = 0; n < count; n++ )
+ {
+ char* notdef = (char *)".notdef";
+
+
+ T1_Add_Table( char_table, n, notdef, 8 );
+ }
+
+ /* Now, we will need to read a record of the form */
+ /* ... charcode /charname ... for each entry in our table */
+ /* */
+ /* We simply look for a number followed by an immediate */
+ /* name. Note that this ignores correctly the sequence */
+ /* that is often seen in type1 fonts: */
+ /* */
+ /* 0 1 255 { 1 index exch /.notdef put } for dup */
+ /* */
+ /* used to clean the encoding array before anything else. */
+ /* */
+ /* We stop when we encounter a `def'. */
+
+ cur = parser->root.cursor;
+ limit = parser->root.limit;
+ n = 0;
+
+ for ( ; cur < limit; )
+ {
+ FT_Byte c;
+
+
+ c = *cur;
+
+ /* we stop when we encounter a `def' */
+ if ( c == 'd' && cur + 3 < limit )
+ {
+ if ( cur[1] == 'e' &&
+ cur[2] == 'f' &&
+ is_space( cur[-1] ) &&
+ is_space( cur[3] ) )
+ {
+ FT_TRACE6(( "encoding end\n" ));
+ break;
+ }
+ }
+
+ /* otherwise, we must find a number before anything else */
+ if ( (FT_Byte)( c - '0' ) < 10 )
+ {
+ FT_Int charcode;
+
+
+ parser->root.cursor = cur;
+ charcode = T1_ToInt( parser );
+ cur = parser->root.cursor;
+
+ /* skip whitespace */
+ while ( cur < limit && is_space( *cur ) )
+ cur++;
+
+ if ( cur < limit && *cur == '/' )
+ {
+ /* bingo, we have an immediate name -- it must be a */
+ /* character name */
+ FT_Byte* cur2 = cur + 1;
+ FT_Int len;
+
+
+ while ( cur2 < limit && is_alpha( *cur2 ) )
+ cur2++;
+
+ len = (FT_Int)( cur2 - cur - 1 );
+
+ parser->root.error = T1_Add_Table( char_table, charcode,
+ cur + 1, len + 1 );
+ char_table->elements[charcode][len] = '\0';
+ if ( parser->root.error )
+ return;
+
+ cur = cur2;
+ }
+ }
+ else
+ cur++;
+ }
+
+ face->type42.encoding_type = T42_ENCODING_TYPE_ARRAY;
+ parser->root.cursor = cur;
+ }
+ /* Otherwise, we should have either `StandardEncoding', */
+ /* `ExpertEncoding', or `ISOLatin1Encoding' */
+ else
+ {
+ if ( cur + 17 < limit &&
+ ft_strncmp( (const char*)cur, "StandardEncoding", 16 ) == 0 )
+ face->type42.encoding_type = T42_ENCODING_TYPE_STANDARD;
+
+ else if ( cur + 15 < limit &&
+ ft_strncmp( (const char*)cur, "ExpertEncoding", 14 ) == 0 )
+ face->type42.encoding_type = T42_ENCODING_TYPE_EXPERT;
+
+ else if ( cur + 18 < limit &&
+ ft_strncmp( (const char*)cur, "ISOLatin1Encoding", 17 ) == 0 )
+ face->type42.encoding_type = T42_ENCODING_TYPE_ISOLATIN1;
+
+ else {
+ FT_ERROR(( "parse_encoding: invalid token!\n" ));
+ parser->root.error = T42_Err_Invalid_File_Format;
+ }
+ }
+ }
+
+
+ static FT_Byte
+ hexval( FT_Byte v )
+ {
+ if ( v >= 'A' && v <= 'F' )
+ return v - 'A' + 10;
+ if ( v >= 'a' && v <= 'f' )
+ return v - 'a' + 10;
+ if ( v >= '0' && v <= '9' )
+ return v - '0';
+
+ return 0;
+ }
+
+
+ static void
+ parse_sfnts( T42_Face face,
+ T42_Loader loader )
+ {
+ T42_Parser parser = &loader->parser;
+ FT_Memory memory = parser->root.memory;
+ FT_Byte* cur = parser->root.cursor;
+ FT_Byte* limit = parser->root.limit;
+ FT_Error error;
+ FT_Int num_tables, status;
+ FT_ULong count, ttf_size, string_size;
+ FT_Bool in_string = 0;
+ FT_Byte v;
+
+
+ /* The format is `/sfnts [ <...> <...> ... ] def' */
+
+ while ( is_space( *cur ) )
+ cur++;
+
+ if (*cur++ == '[')
+ {
+ status = 0;
+ count = 0;
+ }
+ else
+ {
+ FT_ERROR(( "parse_sfnts: can't find begin of sfnts vector!\n" ));
+ error = T42_Err_Invalid_File_Format;
+ goto Fail;
+ }
+
+ while ( cur < limit - 2 )
+ {
+ while ( is_space( *cur ) )
+ cur++;
+
+ switch ( *cur )
+ {
+ case ']':
+ parser->root.cursor = cur++;
+ return;
+
+ case '<':
+ in_string = 1;
+ string_size = 0;
+ cur++;
+ continue;
+
+ case '>':
+ if ( !in_string )
+ {
+ FT_ERROR(( "parse_sfnts: found unpaired `>'!\n" ));
+ error = T42_Err_Invalid_File_Format;
+ goto Fail;
+ }
+
+ /* A string can have, as a last byte, */
+ /* a zero byte for padding. If so, ignore it */
+ if ( ( v == 0 ) && ( string_size % 2 == 1 ) )
+ count--;
+ in_string = 0;
+ cur++;
+ continue;
+
+ case '%':
+ if ( !in_string )
+ {
+ /* Comment found; skip till end of line */
+ while ( *cur != '\n' )
+ cur++;
+ continue;
+ }
+ else
+ {
+ FT_ERROR(( "parse_sfnts: found `%' in string!\n" ));
+ error = T42_Err_Invalid_File_Format;
+ goto Fail;
+ }
+
+ default:
+ if ( !ft_xdigit( *cur ) || !ft_xdigit( *(cur + 1) ) )
+ {
+ FT_ERROR(( "parse_sfnts: found non-hex characters in string" ));
+ error = T42_Err_Invalid_File_Format;
+ goto Fail;
+ }
+
+ v = 16 * hexval( *cur++ ) + hexval( *cur++ );
+ string_size++;
+ }
+
+ switch ( status )
+ {
+ case 0: /* The '[' was read, so load offset table, 12 bytes */
+ if ( count < 12 )
+ {
+ face->ttf_data[count++] = v;
+ continue;
+ }
+ else
+ {
+ num_tables = 16 * face->ttf_data[4] + face->ttf_data[5];
+ status = 1;
+ ttf_size = 12 + 16 * num_tables;
+
+ if ( FT_REALLOC( face->ttf_data, 12, ttf_size ) )
+ goto Fail;
+ }
+ /* No break, fall-through */
+
+ case 1: /* The offset table is read; read now the table directory */
+ if ( count < ttf_size )
+ {
+ face->ttf_data[count++] = v;
+ continue;
+ }
+ else
+ {
+ int i;
+ FT_ULong len;
+
+
+ for ( i = 0; i < num_tables; i++ )
+ {
+ len = face->ttf_data[12 + 16*i + 12 + 0] << 24;
+ len += face->ttf_data[12 + 16*i + 12 + 1] << 16;
+ len += face->ttf_data[12 + 16*i + 12 + 2] << 8;
+ len += face->ttf_data[12 + 16*i + 12 + 3];
+
+ /* Pad to a 4-byte boundary length */
+ ttf_size += ( len + 3 ) & ~3;
+ }
+
+ status = 2;
+ face->ttf_size = ttf_size;
+
+ if ( FT_REALLOC( face->ttf_data, 12 + 16 * num_tables,
+ ttf_size + 1 ) )
+ goto Fail;
+ }
+ /* No break, fall-through */
+
+ case 2: /* We are reading normal tables; just swallow them */
+ face->ttf_data[count++] = v;
+
+ }
+ }
+
+ /* If control reaches this point, the format was not valid */
+ error = T42_Err_Invalid_File_Format;
+
+ Fail:
+ parser->root.error = error;
+ }
+
+
+ static void
+ parse_charstrings( T42_Face face,
+ T42_Loader loader )
+ {
+ T42_Parser parser = &loader->parser;
+ PS_Table code_table = &loader->charstrings;
+ PS_Table name_table = &loader->glyph_names;
+ FT_Memory memory = parser->root.memory;
+ FT_Error error;
+
+ PSAux_Service psaux = (PSAux_Service)face->psaux;
+
+ FT_Byte* cur;
+ FT_Byte* limit = parser->root.limit;
+ FT_Int n;
+
+
+ loader->num_glyphs = T1_ToInt( parser );
+ if ( parser->root.error )
+ return;
+
+ /* initialize tables */
+
+ error = psaux->ps_table_funcs->init( code_table,
+ loader->num_glyphs,
+ memory );
+ if ( error )
+ goto Fail;
+
+ error = psaux->ps_table_funcs->init( name_table,
+ loader->num_glyphs,
+ memory );
+ if ( error )
+ goto Fail;
+
+ n = 0;
+
+ for (;;)
+ {
+ /* the format is simple: */
+ /* `/glyphname' + index + def */
+ /* */
+ /* note that we stop when we find an `end' */
+ /* */
+ T1_Skip_Spaces( parser );
+
+ cur = parser->root.cursor;
+ if ( cur >= limit )
+ break;
+
+ /* we stop when we find an `end' keyword */
+ if ( *cur == 'e' &&
+ cur + 3 < limit &&
+ cur[1] == 'n' &&
+ cur[2] == 'd' )
+ break;
+
+ if ( *cur != '/' )
+ T1_Skip_Alpha( parser );
+ else
+ {
+ FT_Byte* cur2 = cur + 1;
+ FT_Int len;
+
+
+ while ( cur2 < limit && is_alpha( *cur2 ) )
+ cur2++;
+ len = (FT_Int)( cur2 - cur - 1 );
+
+ error = T1_Add_Table( name_table, n, cur + 1, len + 1 );
+ if ( error )
+ goto Fail;
+
+ /* add a trailing zero to the name table */
+ name_table->elements[n][len] = '\0';
+
+ parser->root.cursor = cur2;
+ T1_Skip_Spaces( parser );
+
+ cur2 = cur = parser->root.cursor;
+ if ( cur >= limit )
+ break;
+
+ while ( cur2 < limit && is_alpha( *cur2 ) )
+ cur2++;
+ len = (FT_Int)( cur2 - cur );
+
+ error = T1_Add_Table( code_table, n, cur, len + 1 );
+ if ( error )
+ goto Fail;
+
+ code_table->elements[n][len] = '\0';
+
+ n++;
+ if ( n >= loader->num_glyphs )
+ break;
+ }
+ }
+
+ /* Index 0 must be a .notdef element */
+ if ( ft_strcmp( (char *)name_table->elements[0], ".notdef" ) )
+ {
+ FT_ERROR(( "parse_charstrings: Index 0 is not `.notdef'!\n" ));
+ error = T42_Err_Invalid_File_Format;
+ goto Fail;
+ }
+
+ loader->num_glyphs = n;
+ return;
+
+ Fail:
+ parser->root.error = error;
+ }
+
+
+ static FT_Error
+ t42_load_keyword( T42_Face face,
+ T42_Loader loader,
+ T1_Field field )
+ {
+ FT_Error error;
+ void* dummy_object;
+ void** objects;
+ FT_UInt max_objects = 0;
+
+
+ /* if the keyword has a dedicated callback, call it */
+ if ( field->type == T1_FIELD_TYPE_CALLBACK ) {
+ field->reader( (FT_Face)face, loader );
+ error = loader->parser.root.error;
+ goto Exit;
+ }
+
+ /* now, the keyword is either a simple field, or a table of fields; */
+ /* we are now going to take care of it */
+ switch ( field->location )
+ {
+ case T1_FIELD_LOCATION_FONT_INFO:
+ dummy_object = &face->type42.font_info;
+ objects = &dummy_object;
+ break;
+
+ default:
+ dummy_object = &face->type42;
+ objects = &dummy_object;
+ }
+
+ if ( field->type == T1_FIELD_TYPE_INTEGER_ARRAY ||
+ field->type == T1_FIELD_TYPE_FIXED_ARRAY )
+ error = T1_Load_Field_Table( &loader->parser, field,
+ objects, max_objects, 0 );
+ else
+ error = T1_Load_Field( &loader->parser, field,
+ objects, max_objects, 0 );
+
+ Exit:
+ return error;
+ }
+
+
+ static FT_Error
+ parse_dict( T42_Face face,
+ T42_Loader loader,
+ FT_Byte* base,
+ FT_Long size )
+ {
+ T42_Parser parser = &loader->parser;
+ FT_Byte* cur = base;
+ FT_Byte* limit = cur + size;
+ FT_UInt n_keywords = sizeof ( t42_keywords ) /
+ sizeof ( t42_keywords[0] );
+
+
+ parser->root.cursor = base;
+ parser->root.limit = base + size;
+ parser->root.error = 0;
+
+ for ( ; cur < limit; cur++ )
+ {
+ /* look for `FontDirectory', which causes problems on some fonts */
+ if ( *cur == 'F' && cur + 25 < limit &&
+ ft_strncmp( (char*)cur, "FontDirectory", 13 ) == 0 )
+ {
+ FT_Byte* cur2;
+
+
+ /* skip the `FontDirectory' keyword */
+ cur += 13;
+ cur2 = cur;
+
+ /* lookup the `known' keyword */
+ while ( cur < limit && *cur != 'k' &&
+ ft_strncmp( (char*)cur, "known", 5 ) )
+ cur++;
+
+ if ( cur < limit )
+ {
+ T1_TokenRec token;
+
+
+ /* skip the `known' keyword and the token following it */
+ cur += 5;
+ loader->parser.root.cursor = cur;
+ T1_ToToken( &loader->parser, &token );
+
+ /* if the last token was an array, skip it! */
+ if ( token.type == T1_TOKEN_TYPE_ARRAY )
+ cur2 = parser->root.cursor;
+ }
+ cur = cur2;
+ }
+ /* look for immediates */
+ else if ( *cur == '/' && cur + 2 < limit )
+ {
+ FT_Byte* cur2;
+ FT_UInt i, len;
+
+
+ cur++;
+ cur2 = cur;
+ while ( cur2 < limit && is_alpha( *cur2 ) )
+ cur2++;
+
+ len = (FT_UInt)( cur2 - cur );
+ if ( len > 0 && len < 22 ) /* XXX What shall it this 22? */
+ {
+ /* now, compare the immediate name to the keyword table */
+
+ /* Loop through all known keywords */
+ for ( i = 0; i < n_keywords; i++ )
+ {
+ T1_Field keyword = (T1_Field)&t42_keywords[i];
+ FT_Byte *name = (FT_Byte*)keyword->ident;
+
+
+ if ( !name )
+ continue;
+
+ if ( ( len == ft_strlen( (const char *)name ) ) &&
+ ( ft_memcmp( cur, name, len ) == 0 ) )
+ {
+ /* we found it -- run the parsing callback! */
+ parser->root.cursor = cur2;
+ T1_Skip_Spaces( parser );
+ parser->root.error = t42_load_keyword(face,
+ loader,
+ keyword );
+ if ( parser->root.error )
+ return parser->root.error;
+ cur = parser->root.cursor;
+ break;
+ }
+ }
+ }
+ }
+ }
+ return parser->root.error;
+ }
+
+
+ static void
+ t42_init_loader( T42_Loader loader,
+ T42_Face face )
+ {
+ FT_UNUSED( face );
+
+ FT_MEM_SET( loader, 0, sizeof ( *loader ) );
+ loader->num_glyphs = 0;
+ loader->num_chars = 0;
+
+ /* initialize the tables -- simply set their `init' field to 0 */
+ loader->encoding_table.init = 0;
+ loader->charstrings.init = 0;
+ loader->glyph_names.init = 0;
+ }
+
+
+ static void
+ t42_done_loader( T42_Loader loader )
+ {
+ T42_Parser parser = &loader->parser;
+
+
+ /* finalize tables */
+ T1_Release_Table( &loader->encoding_table );
+ T1_Release_Table( &loader->charstrings );
+ T1_Release_Table( &loader->glyph_names );
+
+ /* finalize parser */
+ T42_Finalize_Parser( parser );
+ }
+
+
+ static FT_Error
+ T42_Open_Face( T42_Face face )
+ {
+ T42_LoaderRec loader;
+ T42_Parser parser;
+ T42_Font type42 = &face->type42;
+ FT_Memory memory = face->root.memory;
+ FT_Error error;
+
+ PSAux_Service psaux = (PSAux_Service)face->psaux;
+
+
+ t42_init_loader( &loader, face );
+
+ parser = &loader.parser;
+
+ if ( FT_ALLOC( face->ttf_data, 12 ) )
+ goto Exit;
+
+ error = T42_New_Parser( parser,
+ face->root.stream,
+ memory,
+ psaux);
+ if ( error )
+ goto Exit;
+
+ error = parse_dict( face, &loader, parser->base_dict, parser->base_len );
+
+ if ( type42->font_type != 42 )
+ {
+ error = T42_Err_Unknown_File_Format;
+ goto Exit;
+ }
+
+ /* now, propagate the charstrings and glyphnames tables */
+ /* to the Type42 data */
+ type42->num_glyphs = loader.num_glyphs;
+
+ if ( !loader.charstrings.init ) {
+ FT_ERROR(( "T42_Open_Face: no charstrings array in face!\n" ));
+ error = T42_Err_Invalid_File_Format;
+ }
+
+ loader.charstrings.init = 0;
+ type42->charstrings_block = loader.charstrings.block;
+ type42->charstrings = loader.charstrings.elements;
+ type42->charstrings_len = loader.charstrings.lengths;
+
+ /* we copy the glyph names `block' and `elements' fields; */
+ /* the `lengths' field must be released later */
+ type42->glyph_names_block = loader.glyph_names.block;
+ type42->glyph_names = (FT_String**)loader.glyph_names.elements;
+ loader.glyph_names.block = 0;
+ loader.glyph_names.elements = 0;
+
+ /* we must now build type42.encoding when we have a custom array */
+ if ( type42->encoding_type == T42_ENCODING_TYPE_ARRAY )
+ {
+ FT_Int charcode, idx, min_char, max_char;
+ FT_Byte* char_name;
+ FT_Byte* glyph_name;
+
+
+ /* OK, we do the following: for each element in the encoding */
+ /* table, look up the index of the glyph having the same name */
+ /* as defined in the CharStrings array. */
+ /* The index is then stored in type42.encoding.char_index, and */
+ /* the name in type42.encoding.char_name */
+
+ min_char = +32000;
+ max_char = -32000;
+
+ charcode = 0;
+ for ( ; charcode < loader.encoding_table.max_elems; charcode++ )
+ {
+ type42->encoding.char_index[charcode] = 0;
+ type42->encoding.char_name [charcode] = (char *)".notdef";
+
+ char_name = loader.encoding_table.elements[charcode];
+ if ( char_name )
+ for ( idx = 0; idx < type42->num_glyphs; idx++ )
+ {
+ glyph_name = (FT_Byte*)type42->glyph_names[idx];
+ if ( ft_strcmp( (const char*)char_name,
+ (const char*)glyph_name ) == 0 )
+ {
+ type42->encoding.char_index[charcode] = (FT_UShort)idx;
+ type42->encoding.char_name [charcode] = (char*)glyph_name;
+
+ /* Change min/max encoded char only if glyph name is */
+ /* not /.notdef */
+ if ( ft_strcmp( (const char*)".notdef",
+ (const char*)glyph_name ) != 0 )
+ {
+ if ( charcode < min_char ) min_char = charcode;
+ if ( charcode > max_char ) max_char = charcode;
+ }
+ break;
+ }
+ }
+ }
+ type42->encoding.code_first = min_char;
+ type42->encoding.code_last = max_char;
+ type42->encoding.num_chars = loader.num_chars;
+ }
+
+ Exit:
+ t42_done_loader( &loader );
+ return error;
+ }
+
+
+ /***************** Driver Functions *************/
+
+
+ /*************************************************************************/
+ /* */
+ /* <Description> */
+ /* The face object constructor. */
+ /* */
+ /* <Input> */
+ /* stream :: input stream where to load font data. */
+ /* */
+ /* face_index :: The index of the font face in the resource. */
+ /* */
+ /* num_params :: Number of additional generic parameters. Ignored. */
+ /* */
+ /* params :: Additional generic parameters. Ignored. */
+ /* */
+ /* <InOut> */
+ /* face :: The face record to build. */
+ /* */
+ /* <Return> */
+ /* FreeType error code. 0 means success. */
+ /* */
+ static FT_Error
+ T42_Face_Init( FT_Stream stream,
+ T42_Face face,
+ FT_Int face_index,
+ FT_Int num_params,
+ FT_Parameter* params)
+ {
+ FT_Error error;
+ PSNames_Service psnames;
+ PSAux_Service psaux;
+ FT_Face root = (FT_Face)&face->root;
+ FT_CharMap charmap = face->charmaprecs;
+
+ FT_UNUSED( num_params );
+ FT_UNUSED( params );
+ FT_UNUSED( face_index );
+ FT_UNUSED( stream );
+
+
+ face->ttf_face = NULL;
+ face->root.num_faces = 1;
+
+ /* XXX */
+ psnames = (PSNames_Service)face->psnames;
+ if ( !psnames )
+ {
+ psnames = (PSNames_Service)
+ FT_Get_Module_Interface( FT_FACE_LIBRARY( face ),
+ "psnames" );
+ face->psnames = psnames;
+ }
+
+ psaux = (PSAux_Service)face->psaux;
+ if ( !psaux )
+ {
+ psaux = (PSAux_Service)
+ FT_Get_Module_Interface( FT_FACE_LIBRARY( face ),
+ "psaux" );
+ face->psaux = psaux;
+ }
+
+ /* open the tokenizer, this will also check the font format */
+ error = T42_Open_Face( face );
+ if ( error )
+ goto Exit;
+
+ /* if we just wanted to check the format, leave successfully now */
+ if ( face_index < 0 )
+ goto Exit;
+
+ /* check the face index */
+ if ( face_index != 0 )
+ {
+ FT_ERROR(( "T42_Face_Init: invalid face index\n" ));
+ error = T42_Err_Invalid_Argument;
+ goto Exit;
+ }
+
+ /* Now, load the font program into the face object */
+
+ /* Init the face object fields */
+ /* Now set up root face fields */
+
+ root->num_glyphs = face->type42.num_glyphs;
+ root->num_charmaps = 1;
+ root->face_index = face_index;
+
+ root->face_flags = FT_FACE_FLAG_SCALABLE;
+ root->face_flags |= FT_FACE_FLAG_HORIZONTAL;
+ root->face_flags |= FT_FACE_FLAG_GLYPH_NAMES;
+
+ if ( face->type42.font_info.is_fixed_pitch )
+ root->face_flags |= FT_FACE_FLAG_FIXED_WIDTH;
+
+ /* XXX: TODO -- add kerning with .afm support */
+
+ /* get style name -- be careful, some broken fonts only */
+ /* have a `/FontName' dictionary entry! */
+ root->family_name = face->type42.font_info.family_name;
+ if ( root->family_name )
+ {
+ char* full = face->type42.font_info.full_name;
+ char* family = root->family_name;
+
+
+ if ( full )
+ {
+ while ( *family && *full == *family )
+ {
+ family++;
+ full++;
+ }
+
+ root->style_name = ( *full == ' ' ? full + 1
+ : (char *)"Regular" );
+ }
+ else
+ root->style_name = (char *)"Regular";
+ }
+ else
+ {
+ /* do we have a `/FontName'? */
+ if ( face->type42.font_name )
+ {
+ root->family_name = face->type42.font_name;
+ root->style_name = (char *)"Regular";
+ }
+ }
+
+ /* no embedded bitmap support */
+ root->num_fixed_sizes = 0;
+ root->available_sizes = 0;
+
+ /* Load the TTF font embedded in the T42 font */
+ error = FT_New_Memory_Face( FT_FACE_LIBRARY( face ),
+ face->ttf_data,
+ face->ttf_size,
+ 0,
+ &face->ttf_face );
+ if ( error )
+ goto Exit;
+
+ /* Ignore info in FontInfo dictionary and use the info from the */
+ /* loaded TTF font. The PostScript interpreter also ignores it. */
+ root->bbox = face->ttf_face->bbox;
+ root->units_per_EM = face->ttf_face->units_per_EM;
+
+ root->ascender = face->ttf_face->ascender;
+ root->descender = face->ttf_face->descender;
+ root->height = face->ttf_face->height;
+
+ root->max_advance_width = face->ttf_face->max_advance_width;
+ root->max_advance_height = face->ttf_face->max_advance_height;
+
+ root->underline_position = face->type42.font_info.underline_position;
+ root->underline_thickness = face->type42.font_info.underline_thickness;
+
+ root->internal->max_points = 0;
+ root->internal->max_contours = 0;
+
+ /* compute style flags */
+ root->style_flags = 0;
+ if ( face->type42.font_info.italic_angle )
+ root->style_flags |= FT_STYLE_FLAG_ITALIC;
+
+ if ( face->ttf_face->style_flags & FT_STYLE_FLAG_BOLD )
+ root->style_flags |= FT_STYLE_FLAG_BOLD;
+
+ if ( face->ttf_face->face_flags & FT_FACE_FLAG_VERTICAL )
+ root->face_flags |= FT_FACE_FLAG_VERTICAL;
+
+ /* XXX: Add support for new cmaps code in FT 2.1.0 */
+
+ /* charmap support -- synthetize unicode charmap if possible */
+
+ /* synthesize a Unicode charmap if there is support in the `PSNames' */
+ /* module */
+ if ( psnames && psnames->unicode_value )
+ {
+ error = psnames->build_unicodes( root->memory,
+ face->type42.num_glyphs,
+ (const char**)face->type42.glyph_names,
+ &face->unicode_map );
+ if ( !error )
+ {
+ root->charmap = charmap;
+ charmap->face = (FT_Face)face;
+ charmap->encoding = ft_encoding_unicode;
+ charmap->platform_id = 3;
+ charmap->encoding_id = 1;
+ charmap++;
+ }
+
+ /* XXX: Is the following code correct? It is used in t1objs.c */
+
+ /* simply clear the error in case of failure (which really) */
+ /* means that out of memory or no unicode glyph names */
+ error = T42_Err_Ok;
+ }
+
+ /* now, support either the standard, expert, or custom encoding */
+ charmap->face = (FT_Face)face;
+ charmap->platform_id = 7; /* a new platform id for Adobe fonts? */
+
+ switch ( face->type42.encoding_type )
+ {
+ case T42_ENCODING_TYPE_STANDARD:
+ charmap->encoding = ft_encoding_adobe_standard;
+ charmap->encoding_id = 0;
+ break;
+
+ case T42_ENCODING_TYPE_EXPERT:
+ charmap->encoding = ft_encoding_adobe_expert;
+ charmap->encoding_id = 1;
+ break;
+
+ case T42_ENCODING_TYPE_ARRAY:
+ charmap->encoding = ft_encoding_adobe_custom;
+ charmap->encoding_id = 2;
+ break;
+
+ case T42_ENCODING_TYPE_ISOLATIN1:
+ charmap->encoding = ft_encoding_latin_1;
+ charmap->encoding_id = 3;
+ break;
+
+ default:
+ FT_ERROR(( "T42_Face_Init: invalid encoding\n" ));
+ error = T42_Err_Invalid_File_Format;
+ goto Exit;
+ }
+
+ root->charmaps = face->charmaps;
+ root->num_charmaps = charmap - face->charmaprecs + 1;
+ face->charmaps[0] = &face->charmaprecs[0];
+ face->charmaps[1] = &face->charmaprecs[1];
+
+ Exit:
+ return error;
+ }
+
+
+ /*************************************************************************/
+ /* */
+ /* <Function> */
+ /* T42_Face_Done */
+ /* */
+ /* <Description> */
+ /* The face object destructor. */
+ /* */
+ /* <Input> */
+ /* face :: A typeless pointer to the face object to destroy. */
+ /* */
+ static void
+ T42_Face_Done( T42_Face face )
+ {
+ T42_Font type42;
+ PS_FontInfo info;
+ FT_Memory memory;
+
+
+ if ( face )
+ {
+ type42 = &face->type42;
+ info = &type42->font_info;
+ memory = face->root.memory;
+
+ /* delete internal ttf face prior to freeing face->ttf_data */
+ if ( face->ttf_face )
+ FT_Done_Face( face->ttf_face );
+
+ /* release font info strings */
+ FT_FREE( info->version );
+ FT_FREE( info->notice );
+ FT_FREE( info->full_name );
+ FT_FREE( info->family_name );
+ FT_FREE( info->weight );
+
+ /* release top dictionary */
+ FT_FREE( type42->charstrings_len );
+ FT_FREE( type42->charstrings );
+ FT_FREE( type42->glyph_names );
+
+ FT_FREE( type42->charstrings_block );
+ FT_FREE( type42->glyph_names_block );
+
+ FT_FREE( type42->encoding.char_index );
+ FT_FREE( type42->encoding.char_name );
+ FT_FREE( type42->font_name );
+
+ FT_FREE( face->ttf_data );
+
+#if 0
+ /* release afm data if present */
+ if ( face->afm_data )
+ T1_Done_AFM( memory, (T1_AFM*)face->afm_data );
+#endif
+
+ /* release unicode map, if any */
+ FT_FREE( face->unicode_map.maps );
+ face->unicode_map.num_maps = 0;
+
+ face->root.family_name = 0;
+ face->root.style_name = 0;
+ }
+ }
+
+ /*************************************************************************/
+ /* */
+ /* <Function> */
+ /* T42_Driver_Init */
+ /* */
+ /* <Description> */
+ /* Initializes a given Type 42 driver object. */
+ /* */
+ /* <Input> */
+ /* driver :: A handle to the target driver object. */
+ /* */
+ /* <Return> */
+ /* FreeType error code. 0 means success. */
+ /* */
+ static FT_Error
+ T42_Driver_Init( T42_Driver driver )
+ {
+ FT_Module ttmodule;
+
+
+ ttmodule = FT_Get_Module( driver->root.root.library, "truetype" );
+ driver->ttclazz = (FT_Driver_Class)ttmodule->clazz;
+
+ /* XXX: What about hinter support? */
+#if 0
+ if (ttmodule->clazz->module_flags & ft_module_driver_has_hinter)
+ driver->root.clazz->root.module_flags |= ft_module_driver_has_hinter;
+#endif
+
+ return T42_Err_Ok;
+ }
+
+
+ static void
+ T42_Driver_Done( T42_Driver driver )
+ {
+ FT_UNUSED( driver );
+ }
+
+
+ /*************************************************************************/
+ /* */
+ /* <Function> */
+ /* Get_Char_Index */
+ /* */
+ /* <Description> */
+ /* Uses a charmap to return a given character code's glyph index. */
+ /* */
+ /* <Input> */
+ /* charmap :: A handle to the source charmap object. */
+ /* */
+ /* charcode :: The character code. */
+ /* */
+ /* <Return> */
+ /* Glyph index. 0 means `undefined character code'. */
+ /* */
+ static FT_UInt
+ Get_Char_Index( FT_CharMap charmap,
+ FT_Long charcode )
+ {
+ T42_Face face;
+ FT_UInt result = 0;
+ PSNames_Service psnames;
+
+
+ face = (T42_Face)charmap->face;
+ psnames = (PSNames_Service)face->psnames;
+ if (!psnames )
+ goto Exit;
+
+ switch ( charmap->encoding )
+ {
+ /*******************************************************************/
+ /* */
+ /* Unicode encoding support */
+ /* */
+ case ft_encoding_unicode:
+ /* if this charmap is used, we ignore the encoding of the font and */
+ /* use the `PSNames' module to synthetize the Unicode charmap */
+ result = psnames->lookup_unicode( &face->unicode_map,
+ (FT_ULong)charcode );
+
+ /* the function returns 0xFFFF if the Unicode charcode has */
+ /* no corresponding glyph */
+ if ( result == 0xFFFFU )
+ result = 0;
+
+ /* The result returned is the index (position)in the CharStrings */
+ /* array. This must be used now to get the value associated to */
+ /* that glyph_name, which is the real index within the truetype */
+ /* structure. */
+ result = ft_atoi( (const char*)face->type42.charstrings[result] );
+ goto Exit;
+
+ /*******************************************************************/
+ /* */
+ /* ISOLatin1 encoding support */
+ /* */
+ case ft_encoding_latin_1:
+ /* ISOLatin1 is the first page of Unicode */
+ if ( charcode < 256 && psnames->unicode_value )
+ {
+ result = psnames->lookup_unicode( &face->unicode_map,
+ (FT_ULong)charcode );
+
+ /* the function returns 0xFFFF if the Unicode charcode has */
+ /* no corresponding glyph */
+ if ( result == 0xFFFFU )
+ result = 0;
+ }
+ goto Exit;
+
+ /*******************************************************************/
+ /* */
+ /* Custom Type 1 encoding */
+ /* */
+ case ft_encoding_adobe_custom:
+ {
+ T1_Encoding encoding = &face->type42.encoding;
+
+
+ if ( charcode >= encoding->code_first &&
+ charcode <= encoding->code_last )
+ {
+ FT_UInt idx = encoding->char_index[charcode];
+
+
+ result = ft_atoi( (const char *)face->type42.charstrings[idx] );
+ }
+ goto Exit;
+ }
+
+ /*******************************************************************/
+ /* */
+ /* Adobe Standard & Expert encoding support */
+ /* */
+ default:
+ if ( charcode < 256 )
+ {
+ FT_UInt code;
+ FT_Int n;
+ const char* glyph_name;
+
+
+ code = psnames->adobe_std_encoding[charcode];
+ if ( charmap->encoding == ft_encoding_adobe_expert )
+ code = psnames->adobe_expert_encoding[charcode];
+
+ glyph_name = psnames->adobe_std_strings( code );
+ if ( !glyph_name )
+ break;
+
+ for ( n = 0; n < face->type42.num_glyphs; n++ )
+ {
+ const char* gname = face->type42.glyph_names[n];
+
+ if ( gname && ( ft_strcmp( gname, glyph_name ) == 0 ) )
+ {
+ result = ft_atoi( (const char *)face->type42.charstrings[n] );
+ break;
+ }
+ }
+ }
+ }
+
+ Exit:
+ return result;
+ }
+
+
+ static FT_Error
+ T42_Size_Init( T42_Size size )
+ {
+ FT_Face face = size->root.face;
+ T42_Face t42face = (T42_Face)face;
+ FT_Size ttsize;
+ FT_Error error = T42_Err_Ok;
+
+
+ if ( face->size == NULL )
+ {
+ /* First size for this face */
+ size->ttsize = t42face->ttf_face->size;
+ }
+ else
+ {
+ error = FT_New_Size( t42face->ttf_face, &ttsize );
+ size->ttsize = ttsize;
+ }
+
+ return error;
+ }
+
+
+ static void
+ T42_Size_Done( T42_Size size )
+ {
+ FT_Face face = size->root.face;
+ T42_Face t42face = (T42_Face)face;
+ FT_ListNode node;
+
+
+ node = FT_List_Find( &t42face->ttf_face->sizes_list, size->ttsize );
+ if ( node )
+ FT_Done_Size( size->ttsize );
+ }
+
+
+ static FT_Error
+ T42_GlyphSlot_Init( T42_GlyphSlot slot )
+ {
+ FT_Face face = slot->root.face;
+ T42_Face t42face = (T42_Face)face;
+ FT_GlyphSlot ttslot;
+ FT_Error error = T42_Err_Ok;
+
+
+ if ( face->glyph == NULL )
+ {
+ /* First glyph slot for this face */
+ slot->ttslot = t42face->ttf_face->glyph;
+ }
+ else
+ {
+ error = FT_New_GlyphSlot( t42face->ttf_face, &ttslot );
+ slot->ttslot = ttslot;
+ }
+
+ return error;
+ }
+
+
+ static void
+ T42_GlyphSlot_Done( T42_GlyphSlot slot )
+ {
+ FT_Face face = slot->root.face;
+ T42_Face t42face = (T42_Face)face;
+ FT_GlyphSlot cur = t42face->ttf_face->glyph;
+
+
+ while ( cur )
+ {
+ if ( cur == slot->ttslot )
+ {
+ FT_Done_GlyphSlot( slot->ttslot );
+ break;
+ }
+
+ cur = cur->next;
+ }
+ }
+
+
+ static FT_Error
+ T42_Char_Size( T42_Size size,
+ FT_F26Dot6 char_width,
+ FT_F26Dot6 char_height,
+ FT_UInt horz_resolution,
+ FT_UInt vert_resolution )
+ {
+ FT_Face face = size->root.face;
+ T42_Face t42face = (T42_Face)face;
+
+
+ return FT_Set_Char_Size( t42face->ttf_face,
+ char_width,
+ char_height,
+ horz_resolution,
+ vert_resolution );
+ }
+
+
+ static FT_Error
+ T42_Pixel_Size( T42_Size size,
+ FT_UInt pixel_width,
+ FT_UInt pixel_height )
+ {
+ FT_Face face = size->root.face;
+ T42_Face t42face = (T42_Face)face;
+
+
+ return FT_Set_Pixel_Sizes( t42face->ttf_face,
+ pixel_width,
+ pixel_height );
+ }
+
+
+ static void
+ ft_glyphslot_clear( FT_GlyphSlot slot )
+ {
+ /* free bitmap if needed */
+ if ( slot->flags & FT_GLYPH_OWN_BITMAP )
+ {
+ FT_Memory memory = FT_FACE_MEMORY( slot->face );
+
+
+ FT_FREE( slot->bitmap.buffer );
+ slot->flags &= ~FT_GLYPH_OWN_BITMAP;
+ }
+
+ /* clear all public fields in the glyph slot */
+ FT_MEM_SET( &slot->metrics, 0, sizeof ( slot->metrics ) );
+ FT_MEM_SET( &slot->outline, 0, sizeof ( slot->outline ) );
+ FT_MEM_SET( &slot->bitmap, 0, sizeof ( slot->bitmap ) );
+
+ slot->bitmap_left = 0;
+ slot->bitmap_top = 0;
+ slot->num_subglyphs = 0;
+ slot->subglyphs = 0;
+ slot->control_data = 0;
+ slot->control_len = 0;
+ slot->other = 0;
+ slot->format = ft_glyph_format_none;
+
+ slot->linearHoriAdvance = 0;
+ slot->linearVertAdvance = 0;
+ }
+
+
+ static FT_Error
+ T42_Load_Glyph( FT_GlyphSlot glyph,
+ FT_Size size,
+ FT_Int glyph_index,
+ FT_Int load_flags )
+ {
+ FT_Error error;
+ T42_GlyphSlot t42slot = (T42_GlyphSlot)glyph;
+ T42_Size t42size = (T42_Size)size;
+ FT_Driver_Class ttclazz = ((T42_Driver)glyph->face->driver)->ttclazz;
+
+
+ ft_glyphslot_clear( t42slot->ttslot );
+ error = ttclazz->load_glyph( t42slot->ttslot,
+ t42size->ttsize,
+ glyph_index,
+ load_flags | FT_LOAD_NO_BITMAP );
+
+ if ( !error )
+ {
+ glyph->metrics = t42slot->ttslot->metrics;
+
+ glyph->linearHoriAdvance = t42slot->ttslot->linearHoriAdvance;
+ glyph->linearVertAdvance = t42slot->ttslot->linearVertAdvance;
+
+ glyph->format = t42slot->ttslot->format;
+ glyph->outline = t42slot->ttslot->outline;
+
+ glyph->bitmap = t42slot->ttslot->bitmap;
+ glyph->bitmap_left = t42slot->ttslot->bitmap_left;
+ glyph->bitmap_top = t42slot->ttslot->bitmap_top;
+ }
+
+ return error;
+ }
+
+
+ /*************************************************************************/
+ /* */
+ /* <Function> */
+ /* Get_Next_Char */
+ /* */
+ /* <Description> */
+ /* Uses a charmap to return the next encoded char. */
+ /* */
+ /* <Input> */
+ /* charmap :: A handle to the source charmap object. */
+ /* */
+ /* charcode :: The character code. */
+ /* */
+ /* <Return> */
+ /* Next char code. 0 means `no more char codes'. */
+ /* */
+ static FT_Long
+ Get_Next_Char( FT_CharMap charmap,
+ FT_Long charcode )
+ {
+ T42_Face face;
+ PSNames_Service psnames;
+
+
+ face = (T42_Face)charmap->face;
+ psnames = (PSNames_Service)face->psnames;
+
+ if ( psnames )
+ switch ( charmap->encoding )
+ {
+ /*******************************************************************/
+ /* */
+ /* Unicode encoding support */
+ /* */
+ case ft_encoding_unicode:
+ /* use the `PSNames' module to synthetize the Unicode charmap */
+ return psnames->next_unicode( &face->unicode_map,
+ (FT_ULong)charcode );
+
+ /*******************************************************************/
+ /* */
+ /* ISOLatin1 encoding support */
+ /* */
+ case ft_encoding_latin_1:
+ {
+ FT_ULong code;
+
+
+ /* use the `PSNames' module to synthetize the Unicode charmap */
+ code = psnames->next_unicode( &face->unicode_map,
+ (FT_ULong)charcode );
+ if ( code < 256 )
+ return code;
+ break;
+ }
+
+ /*******************************************************************/
+ /* */
+ /* Custom Type 1 encoding */
+ /* */
+ case ft_encoding_adobe_custom:
+ {
+ T1_Encoding encoding = &face->type42.encoding;
+
+
+ charcode++;
+ if ( charcode < encoding->code_first )
+ charcode = encoding->code_first;
+ while ( charcode <= encoding->code_last ) {
+ if ( encoding->char_index[charcode] )
+ return charcode;
+ charcode++;
+ }
+ }
+
+
+ /*******************************************************************/
+ /* */
+ /* Adobe Standard & Expert encoding support */
+ /* */
+ default:
+ while ( ++charcode < 256 )
+ {
+ FT_UInt code;
+ FT_Int n;
+ const char* glyph_name;
+
+
+ code = psnames->adobe_std_encoding[charcode];
+ if ( charmap->encoding == ft_encoding_adobe_expert )
+ code = psnames->adobe_expert_encoding[charcode];
+
+ glyph_name = psnames->adobe_std_strings( code );
+ if ( !glyph_name )
+ continue;
+
+ for ( n = 0; n < face->type42.num_glyphs; n++ )
+ {
+ const char* gname = face->type42.glyph_names[n];
+
+
+ if ( gname && gname[0] == glyph_name[0] &&
+ ft_strcmp( gname, glyph_name ) == 0 )
+ return charcode;
+ }
+ }
+ }
+
+ return 0;
+ }
+
+
+ static FT_Error
+ t42_get_glyph_name( T42_Face face,
+ FT_UInt glyph_index,
+ FT_Pointer buffer,
+ FT_UInt buffer_max )
+ {
+ FT_String* gname;
+
+
+ gname = face->type42.glyph_names[glyph_index];
+
+ if ( buffer_max > 0 )
+ {
+ FT_UInt len = (FT_UInt)( ft_strlen( gname ) );
+
+
+ if ( len >= buffer_max )
+ len = buffer_max - 1;
+ FT_MEM_COPY( buffer, gname, len );
+ ((FT_Byte*)buffer)[len] = 0;
+ }
+
+ return T42_Err_Ok;
+ }
+
+
+ static const char*
+ t42_get_ps_name( T42_Face face )
+ {
+ return (const char*)face->type42.font_name;
+ }
+
+
+ static FT_UInt
+ t42_get_name_index( T42_Face face,
+ FT_String* glyph_name )
+ {
+ FT_Int i;
+ FT_String* gname;
+
+
+ for ( i = 0; i < face->type42.num_glyphs; i++ )
+ {
+ gname = face->type42.glyph_names[i];
+
+ if ( !ft_strcmp( glyph_name, gname ) )
+ return ft_atoi( (const char *)face->type42.charstrings[i] );
+ }
+
+ return 0;
+ }
+
+
+ static FT_Module_Interface
+ Get_Interface( FT_Driver driver,
+ const FT_String* t42_interface )
+ {
+ FT_UNUSED( driver );
+
+ /* Any additional interface are defined here */
+ if (ft_strcmp( (const char*)t42_interface, "glyph_name" ) == 0 )
+ return (FT_Module_Interface)t42_get_glyph_name;
+
+ if ( ft_strcmp( (const char*)t42_interface, "name_index" ) == 0 )
+ return (FT_Module_Interface)t42_get_name_index;
+
+ if ( ft_strcmp( (const char*)t42_interface, "postscript_name" ) == 0 )
+ return (FT_Module_Interface)t42_get_ps_name;
+
+ return 0;
+ }
+
+
+ const FT_Driver_ClassRec t42_driver_class =
+ {
+ {
+ ft_module_font_driver |
+ ft_module_driver_scalable |
+ ft_module_driver_has_hinter,
+
+ sizeof ( T42_DriverRec ),
+
+ "type42",
+ 0x10000L,
+ 0x20000L,
+
+ 0, /* format interface */
+
+ (FT_Module_Constructor)T42_Driver_Init,
+ (FT_Module_Destructor) T42_Driver_Done,
+ (FT_Module_Requester) Get_Interface,
+ },
+
+ sizeof ( T42_FaceRec ),
+ sizeof ( T42_SizeRec ),
+ sizeof ( T42_GlyphSlotRec ),
+
+ (FT_Face_InitFunc) T42_Face_Init,
+ (FT_Face_DoneFunc) T42_Face_Done,
+ (FT_Size_InitFunc) T42_Size_Init,
+ (FT_Size_DoneFunc) T42_Size_Done,
+ (FT_Slot_InitFunc) T42_GlyphSlot_Init,
+ (FT_Slot_DoneFunc) T42_GlyphSlot_Done,
+
+ (FT_Size_ResetPointsFunc) T42_Char_Size,
+ (FT_Size_ResetPixelsFunc) T42_Pixel_Size,
+ (FT_Slot_LoadFunc) T42_Load_Glyph,
+ (FT_CharMap_CharIndexFunc)Get_Char_Index,
+
+ (FT_Face_GetKerningFunc) 0,
+ (FT_Face_AttachFunc) 0,
+
+ (FT_Face_GetAdvancesFunc) 0,
+
+ (FT_CharMap_CharNextFunc) Get_Next_Char
+ };
+
+
+#ifdef FT_CONFIG_OPTION_DYNAMIC_DRIVERS
+
+
+ /*************************************************************************/
+ /* */
+ /* <Function> */
+ /* getDriverClass */
+ /* */
+ /* <Description> */
+ /* This function is used when compiling the TrueType driver as a */
+ /* shared library (`.DLL' or `.so'). It will be used by the */
+ /* high-level library of FreeType to retrieve the address of the */
+ /* driver's generic interface. */
+ /* */
+ /* It shouldn't be implemented in a static build, as each driver must */
+ /* have the same function as an exported entry point. */
+ /* */
+ /* <Return> */
+ /* The address of the T42's driver generic interface. The */
+ /* format-specific interface can then be retrieved through the method */
+ /* interface->get_format_interface. */
+ /* */
+ FT_EXPORT_DEF( const FT_Driver_Class )
+ getDriverClass( void )
+ {
+ return &t42_driver_class;
+ }
+
+
+#endif /* FT_CONFIG_OPTION_DYNAMIC_DRIVERS */
+
+
+/* END */