projects / wxWidgets.git / blame
| Commit | Line | Data |
|---|---|---|
| cabec872 RR |
1 | /***************************************************************************/ |
| 2 | /* */ | |
| 3 | /* t1parse.h */ | |
| 4 | /* */ | |
| 5 | /* Type 1 parser (specification). */ | |
| 6 | /* */ | |
| 7 | /* Copyright 1996-2000 by */ | |
| 8 | /* David Turner, Robert Wilhelm, and Werner Lemberg. */ | |
| 9 | /* */ | |
| 10 | /* This file is part of the FreeType project, and may only be used, */ | |
| 11 | /* modified, and distributed under the terms of the FreeType project */ | |
| 12 | /* license, LICENSE.TXT. By continuing to use, modify, or distribute */ | |
| 13 | /* this file you indicate that you have read the license and */ | |
| 14 | /* understand and accept it fully. */ | |
| 15 | /* */ | |
| 16 | /***************************************************************************/ | |
| 17 | ||
| 18 | ||
| 19 | /*************************************************************************/ | |
| 20 | /* */ | |
| 21 | /* The Type1 parser component is in charge of simply parsing the font */ | |
| 22 | /* input stream and convert simple tokens and elements into integers, */ | |
| 23 | /* floats, matrices, strings, etc. */ | |
| 24 | /* */ | |
| 25 | /* It is used by the Type1 loader. */ | |
| 26 | /* */ | |
| 27 | /*************************************************************************/ | |
| 28 | ||
| 29 | ||
| 30 | #ifndef T1PARSE_H | |
| 31 | #define T1PARSE_H | |
| 32 | ||
| 33 | #include <freetype/internal/ftstream.h> | |
| 34 | ||
| 35 | ||
| 36 | #ifdef FT_FLAT_COMPILE | |
| 37 | ||
| 38 | #include "t1tokens.h" | |
| 39 | ||
| 40 | #else | |
| 41 | ||
| 42 | #include <type1/t1tokens.h> | |
| 43 | ||
| 44 | #endif | |
| 45 | ||
| 46 | ||
| 47 | #ifdef __cplusplus | |
| 48 | extern "C" { | |
| 49 | #endif | |
| 50 | ||
| 51 | ||
| 52 | /*************************************************************************/ | |
| 53 | /* */ | |
| 54 | /* <Enum> */ | |
| 55 | /* T1_DictState */ | |
| 56 | /* */ | |
| 57 | /* <Description> */ | |
| 58 | /* An enumeration used to describe the Type 1 parser's state, i.e. */ | |
| 59 | /* which dictionary (or array) it is scanning and processing at the */ | |
| 60 | /* current moment. */ | |
| 61 | /* */ | |
| 62 | typedef enum T1_DictState_ | |
| 63 | { | |
| 64 | dict_none = 0, | |
| 65 | dict_font, /* parsing the font dictionary */ | |
| 66 | dict_fontinfo, /* parsing the font info dictionary */ | |
| 67 | dict_none2, /* beginning to parse the encrypted section */ | |
| 68 | dict_private, /* parsing the private dictionary */ | |
| 69 | dict_encoding, /* parsing the encoding array */ | |
| 70 | dict_subrs, /* parsing the subrs array */ | |
| 71 | dict_othersubrs, /* parsing the othersubrs array (?) */ | |
| 72 | dict_charstrings, /* parsing the charstrings dictionary */ | |
| 73 | dict_unknown_array, /* parsing/ignoring an unknown array */ | |
| 74 | dict_unknown_dict, /* parsing/ignoring an unknown dictionary */ | |
| 75 | ||
| 76 | dict_max /* do not remove from list */ | |
| 77 | ||
| 78 | } T1_DictState; | |
| 79 | ||
| 80 | ||
| 81 | /*************************************************************************/ | |
| 82 | /* */ | |
| 83 | /* <Struct> */ | |
| 84 | /* T1_Table */ | |
| 85 | /* */ | |
| 86 | /* <Description> */ | |
| 87 | /* A T1_Table is a simple object used to store an array of objects in */ | |
| 88 | /* a single memory block. */ | |
| 89 | /* */ | |
| 90 | /* <Fields> */ | |
| 91 | /* block :: The address in memory of the growheap's block. This */ | |
| 92 | /* can change between two object adds, due to */ | |
| 93 | /* reallocation. */ | |
| 94 | /* */ | |
| 95 | /* cursor :: The current top of the grow heap within its block. */ | |
| 96 | /* */ | |
| 97 | /* capacity :: The current size of the heap block. Increments by */ | |
| 98 | /* 1kByte chunks. */ | |
| 99 | /* */ | |
| 100 | /* max_elems :: The maximum number of elements in table. */ | |
| 101 | /* */ | |
| 102 | /* num_elems :: The current number of elements in table. */ | |
| 103 | /* */ | |
| 104 | /* elements :: A table of element addresses within the block. */ | |
| 105 | /* */ | |
| 106 | /* lengths :: A table of element sizes within the block. */ | |
| 107 | /* */ | |
| 108 | /* memory :: The object used for memory operations */ | |
| 109 | /* (alloc/realloc). */ | |
| 110 | /* */ | |
| 111 | typedef struct T1_Table_ | |
| 112 | { | |
| 113 | FT_Byte* block; /* current memory block */ | |
| 114 | FT_Int cursor; /* current cursor in memory block */ | |
| 115 | FT_Int capacity; /* current size of memory block */ | |
| 116 | ||
| 117 | FT_Int max_elems; | |
| 118 | FT_Int num_elems; | |
| 119 | FT_Byte** elements; /* addresses of table elements */ | |
| 120 | FT_Int* lengths; /* lengths of table elements */ | |
| 121 | ||
| 122 | FT_Memory memory; | |
| 123 | ||
| 124 | } T1_Table; | |
| 125 | ||
| 126 | ||
| 127 | /*************************************************************************/ | |
| 128 | /* */ | |
| 129 | /* <Struct> */ | |
| 130 | /* T1_Parser */ | |
| 131 | /* */ | |
| 132 | /* <Description> */ | |
| 133 | /* A Type 1 parser. This object is in charge of parsing Type 1 ASCII */ | |
| 134 | /* streams and builds dictionaries for a T1_Face object. */ | |
| 135 | /* */ | |
| 136 | /* <Fields> */ | |
| 137 | /* error :: The current error code. 0 means success. */ | |
| 138 | /* */ | |
| 139 | /* face :: The target T1_Face object being built. */ | |
| 140 | /* */ | |
| 141 | /* tokenizer :: The tokenizer (lexical analyser) used for */ | |
| 142 | /* processing the input stream. */ | |
| 143 | /* */ | |
| 144 | /* dump_tokens :: XXX */ | |
| 145 | /* */ | |
| 146 | /* stack :: The current token stack. Note that we don't */ | |
| 147 | /* use intermediate Postscript objects here! */ | |
| 148 | /* */ | |
| 149 | /* top :: The current top of token stack. */ | |
| 150 | /* */ | |
| 151 | /* limit :: The current upper bound of the token stack. */ | |
| 152 | /* Used for overflow checks. */ | |
| 153 | /* */ | |
| 154 | /* args :: The arguments of a given operator. Used and */ | |
| 155 | /* increased by the various CopyXXX() functions. */ | |
| 156 | /* */ | |
| 157 | /* state_index :: The index of the top of the dictionary state */ | |
| 158 | /* stack. */ | |
| 159 | /* */ | |
| 160 | /* state_stack :: The dictionary states stack. */ | |
| 161 | /* */ | |
| 162 | /* table :: A T1_Table object used to record various kinds */ | |
| 163 | /* of dictionaries or arrays (like `/Encoding', */ | |
| 164 | /* `/Subrs', `/CharStrings'). */ | |
| 165 | /* */ | |
| 166 | /* cur_name :: XXX */ | |
| 167 | /* */ | |
| 168 | /* encoding_type :: XXX */ | |
| 169 | /* */ | |
| 170 | /* encoding_names :: XXX */ | |
| 171 | /* */ | |
| 172 | /* encoding_lengths :: XXX */ | |
| 173 | /* */ | |
| 174 | /* encoding_offsets :: XXX */ | |
| 175 | /* */ | |
| 176 | /* subrs :: XXX */ | |
| 177 | /* */ | |
| 178 | /* charstrings :: XXX */ | |
| 179 | /* */ | |
| 180 | typedef struct T1_Parser_ | |
| 181 | { | |
| 182 | FT_Error error; | |
| 183 | T1_Face face; | |
| 184 | ||
| 185 | T1_Tokenizer tokenizer; | |
| 186 | FT_Bool dump_tokens; | |
| 187 | ||
| 188 | T1_Token stack[T1_MAX_STACK_DEPTH]; | |
| 189 | T1_Token* top; | |
| 190 | T1_Token* limit; | |
| 191 | T1_Token* args; | |
| 192 | ||
| 193 | FT_Int state_index; | |
| 194 | T1_DictState state_stack[T1_MAX_DICT_DEPTH]; | |
| 195 | ||
| 196 | T1_Table table; | |
| 197 | ||
| 198 | FT_Int cur_name; | |
| 199 | ||
| 200 | T1_EncodingType encoding_type; | |
| 201 | FT_Byte* encoding_names; | |
| 202 | FT_Int* encoding_lengths; | |
| 203 | FT_Byte** encoding_offsets; | |
| 204 | ||
| 205 | FT_Byte* subrs; | |
| 206 | FT_Byte* charstrings; | |
| 207 | ||
| 208 | } T1_Parser; | |
| 209 | ||
| 210 | ||
| 211 | LOCAL_DEF | |
| 212 | FT_Error T1_New_Table( T1_Table* table, | |
| 213 | FT_Int count, | |
| 214 | FT_Memory memory ); | |
| 215 | ||
| 216 | LOCAL_DEF | |
| 217 | FT_Error T1_Add_Table( T1_Table* table, | |
| 218 | FT_Int index, | |
| 219 | void* object, | |
| 220 | FT_Int length ); | |
| 221 | ||
| 222 | LOCAL_DEF | |
| 223 | void T1_Done_Table( T1_Table* table ); | |
| 224 | ||
| 225 | ||
| 226 | LOCAL_DEF | |
| 227 | FT_String* CopyString( T1_Parser* parser ); | |
| 228 | ||
| 229 | LOCAL_DEF | |
| 230 | FT_Long CopyInteger( T1_Parser* parser ); | |
| 231 | ||
| 232 | LOCAL_DEF | |
| 233 | FT_Bool CopyBoolean( T1_Parser* parser ); | |
| 234 | ||
| 235 | LOCAL_DEF | |
| 236 | FT_Long CopyFloat( T1_Parser* parser, | |
| 237 | FT_Int scale ); | |
| 238 | ||
| 239 | LOCAL_DEF | |
| 240 | void CopyBBox( T1_Parser* parser, | |
| 241 | FT_BBox* bbox ); | |
| 242 | ||
| 243 | LOCAL_DEF | |
| 244 | void CopyMatrix( T1_Parser* parser, | |
| 245 | FT_Matrix* matrix ); | |
| 246 | ||
| 247 | LOCAL_DEF | |
| 248 | void CopyArray( T1_Parser* parser, | |
| 249 | FT_Byte* num_elements, | |
| 250 | FT_Short* elements, | |
| 251 | FT_Int max_elements ); | |
| 252 | ||
| 253 | ||
| 254 | #ifdef __cplusplus | |
| 255 | } | |
| 256 | #endif | |
| 257 | ||
| 258 | #endif /* T1PARSE_H */ | |
| 259 | ||
| 260 | ||
| 261 | /* END */ |