kc3-lang/freetype/include/internal/psaux.h
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Hash : 04c22370
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Date : 2015-02-25T11:20:20
[psaux] Signedness fixes. * include/internal/psaux.h, src/psaux/afmparse.c, src/psaux/afmparse.h, src/psaux/psconv.c, src/psaux/psobjs.c, src/psaux/t1cmap.c, src/psaux/t1decode.c: Apply.
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include/internal/psaux.h
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/***************************************************************************/ /* */ /* psaux.h */ /* */ /* Auxiliary functions and data structures related to PostScript fonts */ /* (specification). */ /* */ /* Copyright 1996-2015 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. */ /* */ /***************************************************************************/ #ifndef __PSAUX_H__ #define __PSAUX_H__ #include <ft2build.h> #include FT_INTERNAL_OBJECTS_H #include FT_INTERNAL_TYPE1_TYPES_H #include FT_SERVICE_POSTSCRIPT_CMAPS_H FT_BEGIN_HEADER /*************************************************************************/ /*************************************************************************/ /***** *****/ /***** T1_TABLE *****/ /***** *****/ /*************************************************************************/ /*************************************************************************/ typedef struct PS_TableRec_* PS_Table; typedef const struct PS_Table_FuncsRec_* PS_Table_Funcs; /*************************************************************************/ /* */ /* <Struct> */ /* PS_Table_FuncsRec */ /* */ /* <Description> */ /* A set of function pointers to manage PS_Table objects. */ /* */ /* <Fields> */ /* table_init :: Used to initialize a table. */ /* */ /* table_done :: Finalizes resp. destroy a given table. */ /* */ /* table_add :: Adds a new object to a table. */ /* */ /* table_release :: Releases table data, then finalizes it. */ /* */ typedef struct PS_Table_FuncsRec_ { FT_Error (*init)( PS_Table table, FT_Int count, FT_Memory memory ); void (*done)( PS_Table table ); FT_Error (*add)( PS_Table table, FT_Int idx, void* object, FT_UInt length ); void (*release)( PS_Table table ); } PS_Table_FuncsRec; /*************************************************************************/ /* */ /* <Struct> */ /* PS_TableRec */ /* */ /* <Description> */ /* A PS_Table is a simple object used to store an array of objects in */ /* a single memory block. */ /* */ /* <Fields> */ /* block :: The address in memory of the growheap's block. This */ /* can change between two object adds, due to */ /* reallocation. */ /* */ /* cursor :: The current top of the grow heap within its block. */ /* */ /* capacity :: The current size of the heap block. Increments by */ /* 1kByte chunks. */ /* */ /* init :: Set to 0xDEADBEEF if `elements' and `lengths' have */ /* been allocated. */ /* */ /* max_elems :: The maximum number of elements in table. */ /* */ /* num_elems :: The current number of elements in table. */ /* */ /* elements :: A table of element addresses within the block. */ /* */ /* lengths :: A table of element sizes within the block. */ /* */ /* memory :: The object used for memory operations */ /* (alloc/realloc). */ /* */ /* funcs :: A table of method pointers for this object. */ /* */ typedef struct PS_TableRec_ { FT_Byte* block; /* current memory block */ FT_Offset cursor; /* current cursor in memory block */ FT_Offset capacity; /* current size of memory block */ FT_ULong init; FT_Int max_elems; FT_Int num_elems; FT_Byte** elements; /* addresses of table elements */ FT_UInt* lengths; /* lengths of table elements */ FT_Memory memory; PS_Table_FuncsRec funcs; } PS_TableRec; /*************************************************************************/ /*************************************************************************/ /***** *****/ /***** T1 FIELDS & TOKENS *****/ /***** *****/ /*************************************************************************/ /*************************************************************************/ typedef struct PS_ParserRec_* PS_Parser; typedef struct T1_TokenRec_* T1_Token; typedef struct T1_FieldRec_* T1_Field; /* simple enumeration type used to identify token types */ typedef enum T1_TokenType_ { T1_TOKEN_TYPE_NONE = 0, T1_TOKEN_TYPE_ANY, T1_TOKEN_TYPE_STRING, T1_TOKEN_TYPE_ARRAY, T1_TOKEN_TYPE_KEY, /* aka `name' */ /* do not remove */ T1_TOKEN_TYPE_MAX } T1_TokenType; /* a simple structure used to identify tokens */ typedef struct T1_TokenRec_ { FT_Byte* start; /* first character of token in input stream */ FT_Byte* limit; /* first character after the token */ T1_TokenType type; /* type of token */ } T1_TokenRec; /* enumeration type used to identify object fields */ typedef enum T1_FieldType_ { T1_FIELD_TYPE_NONE = 0, T1_FIELD_TYPE_BOOL, T1_FIELD_TYPE_INTEGER, T1_FIELD_TYPE_FIXED, T1_FIELD_TYPE_FIXED_1000, T1_FIELD_TYPE_STRING, T1_FIELD_TYPE_KEY, T1_FIELD_TYPE_BBOX, T1_FIELD_TYPE_MM_BBOX, T1_FIELD_TYPE_INTEGER_ARRAY, T1_FIELD_TYPE_FIXED_ARRAY, T1_FIELD_TYPE_CALLBACK, /* do not remove */ T1_FIELD_TYPE_MAX } T1_FieldType; typedef enum T1_FieldLocation_ { T1_FIELD_LOCATION_CID_INFO, T1_FIELD_LOCATION_FONT_DICT, T1_FIELD_LOCATION_FONT_EXTRA, T1_FIELD_LOCATION_FONT_INFO, T1_FIELD_LOCATION_PRIVATE, T1_FIELD_LOCATION_BBOX, T1_FIELD_LOCATION_LOADER, T1_FIELD_LOCATION_FACE, T1_FIELD_LOCATION_BLEND, /* do not remove */ T1_FIELD_LOCATION_MAX } T1_FieldLocation; typedef void (*T1_Field_ParseFunc)( FT_Face face, FT_Pointer parser ); /* structure type used to model object fields */ typedef struct T1_FieldRec_ { const char* ident; /* field identifier */ T1_FieldLocation location; T1_FieldType type; /* type of field */ T1_Field_ParseFunc reader; FT_UInt offset; /* offset of field in object */ FT_Byte size; /* size of field in bytes */ FT_UInt array_max; /* maximum number of elements for */ /* array */ FT_UInt count_offset; /* offset of element count for */ /* arrays; must not be zero if in */ /* use -- in other words, a */ /* `num_FOO' element must not */ /* start the used structure if we */ /* parse a `FOO' array */ FT_UInt dict; /* where we expect it */ } T1_FieldRec; #define T1_FIELD_DICT_FONTDICT ( 1 << 0 ) /* also FontInfo and FDArray */ #define T1_FIELD_DICT_PRIVATE ( 1 << 1 ) #define T1_NEW_SIMPLE_FIELD( _ident, _type, _fname, _dict ) \ { \ _ident, T1CODE, _type, \ 0, \ FT_FIELD_OFFSET( _fname ), \ FT_FIELD_SIZE( _fname ), \ 0, 0, \ _dict \ }, #define T1_NEW_CALLBACK_FIELD( _ident, _reader, _dict ) \ { \ _ident, T1CODE, T1_FIELD_TYPE_CALLBACK, \ (T1_Field_ParseFunc)_reader, \ 0, 0, \ 0, 0, \ _dict \ }, #define T1_NEW_TABLE_FIELD( _ident, _type, _fname, _max, _dict ) \ { \ _ident, T1CODE, _type, \ 0, \ FT_FIELD_OFFSET( _fname ), \ FT_FIELD_SIZE_DELTA( _fname ), \ _max, \ FT_FIELD_OFFSET( num_ ## _fname ), \ _dict \ }, #define T1_NEW_TABLE_FIELD2( _ident, _type, _fname, _max, _dict ) \ { \ _ident, T1CODE, _type, \ 0, \ FT_FIELD_OFFSET( _fname ), \ FT_FIELD_SIZE_DELTA( _fname ), \ _max, 0, \ _dict \ }, #define T1_FIELD_BOOL( _ident, _fname, _dict ) \ T1_NEW_SIMPLE_FIELD( _ident, T1_FIELD_TYPE_BOOL, _fname, _dict ) #define T1_FIELD_NUM( _ident, _fname, _dict ) \ T1_NEW_SIMPLE_FIELD( _ident, T1_FIELD_TYPE_INTEGER, _fname, _dict ) #define T1_FIELD_FIXED( _ident, _fname, _dict ) \ T1_NEW_SIMPLE_FIELD( _ident, T1_FIELD_TYPE_FIXED, _fname, _dict ) #define T1_FIELD_FIXED_1000( _ident, _fname, _dict ) \ T1_NEW_SIMPLE_FIELD( _ident, T1_FIELD_TYPE_FIXED_1000, _fname, \ _dict ) #define T1_FIELD_STRING( _ident, _fname, _dict ) \ T1_NEW_SIMPLE_FIELD( _ident, T1_FIELD_TYPE_STRING, _fname, _dict ) #define T1_FIELD_KEY( _ident, _fname, _dict ) \ T1_NEW_SIMPLE_FIELD( _ident, T1_FIELD_TYPE_KEY, _fname, _dict ) #define T1_FIELD_BBOX( _ident, _fname, _dict ) \ T1_NEW_SIMPLE_FIELD( _ident, T1_FIELD_TYPE_BBOX, _fname, _dict ) #define T1_FIELD_NUM_TABLE( _ident, _fname, _fmax, _dict ) \ T1_NEW_TABLE_FIELD( _ident, T1_FIELD_TYPE_INTEGER_ARRAY, \ _fname, _fmax, _dict ) #define T1_FIELD_FIXED_TABLE( _ident, _fname, _fmax, _dict ) \ T1_NEW_TABLE_FIELD( _ident, T1_FIELD_TYPE_FIXED_ARRAY, \ _fname, _fmax, _dict ) #define T1_FIELD_NUM_TABLE2( _ident, _fname, _fmax, _dict ) \ T1_NEW_TABLE_FIELD2( _ident, T1_FIELD_TYPE_INTEGER_ARRAY, \ _fname, _fmax, _dict ) #define T1_FIELD_FIXED_TABLE2( _ident, _fname, _fmax, _dict ) \ T1_NEW_TABLE_FIELD2( _ident, T1_FIELD_TYPE_FIXED_ARRAY, \ _fname, _fmax, _dict ) #define T1_FIELD_CALLBACK( _ident, _name, _dict ) \ T1_NEW_CALLBACK_FIELD( _ident, _name, _dict ) /*************************************************************************/ /*************************************************************************/ /***** *****/ /***** T1 PARSER *****/ /***** *****/ /*************************************************************************/ /*************************************************************************/ typedef const struct PS_Parser_FuncsRec_* PS_Parser_Funcs; typedef struct PS_Parser_FuncsRec_ { void (*init)( PS_Parser parser, FT_Byte* base, FT_Byte* limit, FT_Memory memory ); void (*done)( PS_Parser parser ); void (*skip_spaces)( PS_Parser parser ); void (*skip_PS_token)( PS_Parser parser ); FT_Long (*to_int)( PS_Parser parser ); FT_Fixed (*to_fixed)( PS_Parser parser, FT_Int power_ten ); FT_Error (*to_bytes)( PS_Parser parser, FT_Byte* bytes, FT_Offset max_bytes, FT_ULong* pnum_bytes, FT_Bool delimiters ); FT_Int (*to_coord_array)( PS_Parser parser, FT_Int max_coords, FT_Short* coords ); FT_Int (*to_fixed_array)( PS_Parser parser, FT_Int max_values, FT_Fixed* values, FT_Int power_ten ); void (*to_token)( PS_Parser parser, T1_Token token ); void (*to_token_array)( PS_Parser parser, T1_Token tokens, FT_UInt max_tokens, FT_Int* pnum_tokens ); FT_Error (*load_field)( PS_Parser parser, const T1_Field field, void** objects, FT_UInt max_objects, FT_ULong* pflags ); FT_Error (*load_field_table)( PS_Parser parser, const T1_Field field, void** objects, FT_UInt max_objects, FT_ULong* pflags ); } PS_Parser_FuncsRec; /*************************************************************************/ /* */ /* <Struct> */ /* PS_ParserRec */ /* */ /* <Description> */ /* A PS_Parser is an object used to parse a Type 1 font very quickly. */ /* */ /* <Fields> */ /* cursor :: The current position in the text. */ /* */ /* base :: Start of the processed text. */ /* */ /* limit :: End of the processed text. */ /* */ /* error :: The last error returned. */ /* */ /* memory :: The object used for memory operations (alloc/realloc). */ /* */ /* funcs :: A table of functions for the parser. */ /* */ typedef struct PS_ParserRec_ { FT_Byte* cursor; FT_Byte* base; FT_Byte* limit; FT_Error error; FT_Memory memory; PS_Parser_FuncsRec funcs; } PS_ParserRec; /*************************************************************************/ /*************************************************************************/ /***** *****/ /***** T1 BUILDER *****/ /***** *****/ /*************************************************************************/ /*************************************************************************/ typedef struct T1_BuilderRec_* T1_Builder; typedef FT_Error (*T1_Builder_Check_Points_Func)( T1_Builder builder, FT_Int count ); typedef void (*T1_Builder_Add_Point_Func)( T1_Builder builder, FT_Pos x, FT_Pos y, FT_Byte flag ); typedef FT_Error (*T1_Builder_Add_Point1_Func)( T1_Builder builder, FT_Pos x, FT_Pos y ); typedef FT_Error (*T1_Builder_Add_Contour_Func)( T1_Builder builder ); typedef FT_Error (*T1_Builder_Start_Point_Func)( T1_Builder builder, FT_Pos x, FT_Pos y ); typedef void (*T1_Builder_Close_Contour_Func)( T1_Builder builder ); typedef const struct T1_Builder_FuncsRec_* T1_Builder_Funcs; typedef struct T1_Builder_FuncsRec_ { void (*init)( T1_Builder builder, FT_Face face, FT_Size size, FT_GlyphSlot slot, FT_Bool hinting ); void (*done)( T1_Builder builder ); T1_Builder_Check_Points_Func check_points; T1_Builder_Add_Point_Func add_point; T1_Builder_Add_Point1_Func add_point1; T1_Builder_Add_Contour_Func add_contour; T1_Builder_Start_Point_Func start_point; T1_Builder_Close_Contour_Func close_contour; } T1_Builder_FuncsRec; /* an enumeration type to handle charstring parsing states */ typedef enum T1_ParseState_ { T1_Parse_Start, T1_Parse_Have_Width, T1_Parse_Have_Moveto, T1_Parse_Have_Path } T1_ParseState; /*************************************************************************/ /* */ /* <Structure> */ /* T1_BuilderRec */ /* */ /* <Description> */ /* A structure used during glyph loading to store its outline. */ /* */ /* <Fields> */ /* memory :: The current memory object. */ /* */ /* face :: The current face object. */ /* */ /* glyph :: The current glyph slot. */ /* */ /* loader :: XXX */ /* */ /* base :: The base glyph outline. */ /* */ /* current :: The current glyph outline. */ /* */ /* max_points :: maximum points in builder outline */ /* */ /* max_contours :: Maximum number of contours in builder outline. */ /* */ /* pos_x :: The horizontal translation (if composite glyph). */ /* */ /* pos_y :: The vertical translation (if composite glyph). */ /* */ /* left_bearing :: The left side bearing point. */ /* */ /* advance :: The horizontal advance vector. */ /* */ /* bbox :: Unused. */ /* */ /* parse_state :: An enumeration which controls the charstring */ /* parsing state. */ /* */ /* load_points :: If this flag is not set, no points are loaded. */ /* */ /* no_recurse :: Set but not used. */ /* */ /* metrics_only :: A boolean indicating that we only want to compute */ /* the metrics of a given glyph, not load all of its */ /* points. */ /* */ /* funcs :: An array of function pointers for the builder. */ /* */ typedef struct T1_BuilderRec_ { FT_Memory memory; FT_Face face; FT_GlyphSlot glyph; FT_GlyphLoader loader; FT_Outline* base; FT_Outline* current; FT_Pos pos_x; FT_Pos pos_y; FT_Vector left_bearing; FT_Vector advance; FT_BBox bbox; /* bounding box */ T1_ParseState parse_state; FT_Bool load_points; FT_Bool no_recurse; FT_Bool metrics_only; void* hints_funcs; /* hinter-specific */ void* hints_globals; /* hinter-specific */ T1_Builder_FuncsRec funcs; } T1_BuilderRec; /*************************************************************************/ /*************************************************************************/ /***** *****/ /***** T1 DECODER *****/ /***** *****/ /*************************************************************************/ /*************************************************************************/ #if 0 /*************************************************************************/ /* */ /* T1_MAX_SUBRS_CALLS details the maximum number of nested sub-routine */ /* calls during glyph loading. */ /* */ #define T1_MAX_SUBRS_CALLS 8 /*************************************************************************/ /* */ /* T1_MAX_CHARSTRING_OPERANDS is the charstring stack's capacity. A */ /* minimum of 16 is required. */ /* */ #define T1_MAX_CHARSTRINGS_OPERANDS 32 #endif /* 0 */ typedef struct T1_Decoder_ZoneRec_ { FT_Byte* cursor; FT_Byte* base; FT_Byte* limit; } T1_Decoder_ZoneRec, *T1_Decoder_Zone; typedef struct T1_DecoderRec_* T1_Decoder; typedef const struct T1_Decoder_FuncsRec_* T1_Decoder_Funcs; typedef FT_Error (*T1_Decoder_Callback)( T1_Decoder decoder, FT_UInt glyph_index ); typedef struct T1_Decoder_FuncsRec_ { FT_Error (*init)( T1_Decoder decoder, FT_Face face, FT_Size size, FT_GlyphSlot slot, FT_Byte** glyph_names, PS_Blend blend, FT_Bool hinting, FT_Render_Mode hint_mode, T1_Decoder_Callback callback ); void (*done)( T1_Decoder decoder ); FT_Error (*parse_charstrings)( T1_Decoder decoder, FT_Byte* base, FT_UInt len ); } T1_Decoder_FuncsRec; typedef struct T1_DecoderRec_ { T1_BuilderRec builder; FT_Long stack[T1_MAX_CHARSTRINGS_OPERANDS]; FT_Long* top; T1_Decoder_ZoneRec zones[T1_MAX_SUBRS_CALLS + 1]; T1_Decoder_Zone zone; FT_Service_PsCMaps psnames; /* for seac */ FT_UInt num_glyphs; FT_Byte** glyph_names; FT_Int lenIV; /* internal for sub routine calls */ FT_Int num_subrs; FT_Byte** subrs; FT_UInt* subrs_len; /* array of subrs length (optional) */ FT_Matrix font_matrix; FT_Vector font_offset; FT_Int flex_state; FT_Int num_flex_vectors; FT_Vector flex_vectors[7]; PS_Blend blend; /* for multiple master support */ FT_Render_Mode hint_mode; T1_Decoder_Callback parse_callback; T1_Decoder_FuncsRec funcs; FT_Long* buildchar; FT_UInt len_buildchar; FT_Bool seac; } T1_DecoderRec; /*************************************************************************/ /*************************************************************************/ /***** *****/ /***** AFM PARSER *****/ /***** *****/ /*************************************************************************/ /*************************************************************************/ typedef struct AFM_ParserRec_* AFM_Parser; typedef struct AFM_Parser_FuncsRec_ { FT_Error (*init)( AFM_Parser parser, FT_Memory memory, FT_Byte* base, FT_Byte* limit ); void (*done)( AFM_Parser parser ); FT_Error (*parse)( AFM_Parser parser ); } AFM_Parser_FuncsRec; typedef struct AFM_StreamRec_* AFM_Stream; /*************************************************************************/ /* */ /* <Struct> */ /* AFM_ParserRec */ /* */ /* <Description> */ /* An AFM_Parser is a parser for the AFM files. */ /* */ /* <Fields> */ /* memory :: The object used for memory operations (alloc and */ /* realloc). */ /* */ /* stream :: This is an opaque object. */ /* */ /* FontInfo :: The result will be stored here. */ /* */ /* get_index :: A user provided function to get a glyph index by its */ /* name. */ /* */ typedef struct AFM_ParserRec_ { FT_Memory memory; AFM_Stream stream; AFM_FontInfo FontInfo; FT_Int (*get_index)( const char* name, FT_Offset len, void* user_data ); void* user_data; } AFM_ParserRec; /*************************************************************************/ /*************************************************************************/ /***** *****/ /***** TYPE1 CHARMAPS *****/ /***** *****/ /*************************************************************************/ /*************************************************************************/ typedef const struct T1_CMap_ClassesRec_* T1_CMap_Classes; typedef struct T1_CMap_ClassesRec_ { FT_CMap_Class standard; FT_CMap_Class expert; FT_CMap_Class custom; FT_CMap_Class unicode; } T1_CMap_ClassesRec; /*************************************************************************/ /*************************************************************************/ /***** *****/ /***** PSAux Module Interface *****/ /***** *****/ /*************************************************************************/ /*************************************************************************/ typedef struct PSAux_ServiceRec_ { /* don't use `PS_Table_Funcs' and friends to avoid compiler warnings */ const PS_Table_FuncsRec* ps_table_funcs; const PS_Parser_FuncsRec* ps_parser_funcs; const T1_Builder_FuncsRec* t1_builder_funcs; const T1_Decoder_FuncsRec* t1_decoder_funcs; void (*t1_decrypt)( FT_Byte* buffer, FT_Offset length, FT_UShort seed ); T1_CMap_Classes t1_cmap_classes; /* fields after this comment line were added after version 2.1.10 */ const AFM_Parser_FuncsRec* afm_parser_funcs; } PSAux_ServiceRec, *PSAux_Service; /* backwards-compatible type definition */ typedef PSAux_ServiceRec PSAux_Interface; /*************************************************************************/ /*************************************************************************/ /***** *****/ /***** Some convenience functions *****/ /***** *****/ /*************************************************************************/ /*************************************************************************/ #define IS_PS_NEWLINE( ch ) \ ( (ch) == '\r' || \ (ch) == '\n' ) #define IS_PS_SPACE( ch ) \ ( (ch) == ' ' || \ IS_PS_NEWLINE( ch ) || \ (ch) == '\t' || \ (ch) == '\f' || \ (ch) == '\0' ) #define IS_PS_SPECIAL( ch ) \ ( (ch) == '/' || \ (ch) == '(' || (ch) == ')' || \ (ch) == '<' || (ch) == '>' || \ (ch) == '[' || (ch) == ']' || \ (ch) == '{' || (ch) == '}' || \ (ch) == '%' ) #define IS_PS_DELIM( ch ) \ ( IS_PS_SPACE( ch ) || \ IS_PS_SPECIAL( ch ) ) #define IS_PS_DIGIT( ch ) \ ( (ch) >= '0' && (ch) <= '9' ) #define IS_PS_XDIGIT( ch ) \ ( IS_PS_DIGIT( ch ) || \ ( (ch) >= 'A' && (ch) <= 'F' ) || \ ( (ch) >= 'a' && (ch) <= 'f' ) ) #define IS_PS_BASE85( ch ) \ ( (ch) >= '!' && (ch) <= 'u' ) #define IS_PS_TOKEN( cur, limit, token ) \ ( (char)(cur)[0] == (token)[0] && \ ( (cur) + sizeof ( (token) ) == (limit) || \ ( (cur) + sizeof( (token) ) < (limit) && \ IS_PS_DELIM( (cur)[sizeof ( (token) ) - 1] ) ) ) && \ ft_strncmp( (char*)(cur), (token), sizeof ( (token) ) - 1 ) == 0 ) FT_END_HEADER #endif /* __PSAUX_H__ */ /* END */