David Turner | 19ed8af | 2000-12-08 02:42:29 +0000 | [diff] [blame] | 1 | /***************************************************************************/ |
| 2 | /* */ |
| 3 | /* cffparse.c */ |
| 4 | /* */ |
| 5 | /* CFF token stream parser (body) */ |
| 6 | /* */ |
Werner Lemberg | 210d618 | 2008-04-01 05:55:48 +0000 | [diff] [blame] | 7 | /* Copyright 1996-2001, 2002, 2003, 2004, 2007, 2008 by */ |
David Turner | 19ed8af | 2000-12-08 02:42:29 +0000 | [diff] [blame] | 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 | |
Werner Lemberg | cc069be | 2000-12-08 16:17:16 +0000 | [diff] [blame] | 18 | |
David Turner | 19ed8af | 2000-12-08 02:42:29 +0000 | [diff] [blame] | 19 | #include <ft2build.h> |
David Turner | 8d3a401 | 2001-03-20 11:14:24 +0000 | [diff] [blame] | 20 | #include "cffparse.h" |
David Turner | 19ed8af | 2000-12-08 02:42:29 +0000 | [diff] [blame] | 21 | #include FT_INTERNAL_STREAM_H |
Werner Lemberg | 6174e17 | 2008-06-10 05:58:25 +0000 | [diff] [blame^] | 22 | #include FT_INTERNAL_DEBUG_H |
David Turner | 19ed8af | 2000-12-08 02:42:29 +0000 | [diff] [blame] | 23 | |
Werner Lemberg | 1f7f0e8 | 2001-06-06 17:30:41 +0000 | [diff] [blame] | 24 | #include "cfferrs.h" |
| 25 | |
Werner Lemberg | cc069be | 2000-12-08 16:17:16 +0000 | [diff] [blame] | 26 | |
David Turner | 19ed8af | 2000-12-08 02:42:29 +0000 | [diff] [blame] | 27 | /*************************************************************************/ |
| 28 | /* */ |
| 29 | /* The macro FT_COMPONENT is used in trace mode. It is an implicit */ |
| 30 | /* parameter of the FT_TRACE() and FT_ERROR() macros, used to print/log */ |
| 31 | /* messages during execution. */ |
| 32 | /* */ |
| 33 | #undef FT_COMPONENT |
Tom Kacvinsky | 8d1f604 | 2001-01-03 00:21:59 +0000 | [diff] [blame] | 34 | #define FT_COMPONENT trace_cffparse |
David Turner | 19ed8af | 2000-12-08 02:42:29 +0000 | [diff] [blame] | 35 | |
| 36 | |
David Turner | 19ed8af | 2000-12-08 02:42:29 +0000 | [diff] [blame] | 37 | enum |
| 38 | { |
| 39 | cff_kind_none = 0, |
| 40 | cff_kind_num, |
| 41 | cff_kind_fixed, |
Werner Lemberg | bf7c832 | 2003-06-06 05:07:53 +0000 | [diff] [blame] | 42 | cff_kind_fixed_thousand, |
David Turner | 19ed8af | 2000-12-08 02:42:29 +0000 | [diff] [blame] | 43 | cff_kind_string, |
| 44 | cff_kind_bool, |
| 45 | cff_kind_delta, |
| 46 | cff_kind_callback, |
| 47 | |
| 48 | cff_kind_max /* do not remove */ |
| 49 | }; |
| 50 | |
| 51 | |
| 52 | /* now generate handlers for the most simple fields */ |
Werner Lemberg | 48c984b | 2002-03-30 16:41:09 +0000 | [diff] [blame] | 53 | typedef FT_Error (*CFF_Field_Reader)( CFF_Parser parser ); |
David Turner | 19ed8af | 2000-12-08 02:42:29 +0000 | [diff] [blame] | 54 | |
| 55 | typedef struct CFF_Field_Handler_ |
| 56 | { |
| 57 | int kind; |
| 58 | int code; |
| 59 | FT_UInt offset; |
| 60 | FT_Byte size; |
| 61 | CFF_Field_Reader reader; |
| 62 | FT_UInt array_max; |
| 63 | FT_UInt count_offset; |
| 64 | |
| 65 | } CFF_Field_Handler; |
| 66 | |
| 67 | |
David Turner | bc82f1b | 2002-03-01 02:26:22 +0000 | [diff] [blame] | 68 | FT_LOCAL_DEF( void ) |
David Turner | b9b2cac | 2002-07-10 16:52:06 +0000 | [diff] [blame] | 69 | cff_parser_init( CFF_Parser parser, |
Werner Lemberg | 48c984b | 2002-03-30 16:41:09 +0000 | [diff] [blame] | 70 | FT_UInt code, |
| 71 | void* object ) |
David Turner | 19ed8af | 2000-12-08 02:42:29 +0000 | [diff] [blame] | 72 | { |
Werner Lemberg | b3d5e9c | 2002-07-28 05:05:24 +0000 | [diff] [blame] | 73 | FT_MEM_ZERO( parser, sizeof ( *parser ) ); |
David Turner | 19ed8af | 2000-12-08 02:42:29 +0000 | [diff] [blame] | 74 | |
| 75 | parser->top = parser->stack; |
| 76 | parser->object_code = code; |
| 77 | parser->object = object; |
| 78 | } |
| 79 | |
| 80 | |
Werner Lemberg | cc069be | 2000-12-08 16:17:16 +0000 | [diff] [blame] | 81 | /* read an integer */ |
Werner Lemberg | 93616ec | 2001-06-27 19:46:12 +0000 | [diff] [blame] | 82 | static FT_Long |
| 83 | cff_parse_integer( FT_Byte* start, |
| 84 | FT_Byte* limit ) |
David Turner | 19ed8af | 2000-12-08 02:42:29 +0000 | [diff] [blame] | 85 | { |
| 86 | FT_Byte* p = start; |
| 87 | FT_Int v = *p++; |
| 88 | FT_Long val = 0; |
| 89 | |
| 90 | |
| 91 | if ( v == 28 ) |
| 92 | { |
| 93 | if ( p + 2 > limit ) |
| 94 | goto Bad; |
| 95 | |
| 96 | val = (FT_Short)( ( (FT_Int)p[0] << 8 ) | p[1] ); |
| 97 | p += 2; |
| 98 | } |
| 99 | else if ( v == 29 ) |
| 100 | { |
| 101 | if ( p + 4 > limit ) |
| 102 | goto Bad; |
| 103 | |
| 104 | val = ( (FT_Long)p[0] << 24 ) | |
| 105 | ( (FT_Long)p[1] << 16 ) | |
| 106 | ( (FT_Long)p[2] << 8 ) | |
| 107 | p[3]; |
| 108 | p += 4; |
| 109 | } |
| 110 | else if ( v < 247 ) |
| 111 | { |
| 112 | val = v - 139; |
| 113 | } |
| 114 | else if ( v < 251 ) |
| 115 | { |
| 116 | if ( p + 1 > limit ) |
| 117 | goto Bad; |
| 118 | |
| 119 | val = ( v - 247 ) * 256 + p[0] + 108; |
| 120 | p++; |
| 121 | } |
| 122 | else |
| 123 | { |
| 124 | if ( p + 1 > limit ) |
| 125 | goto Bad; |
| 126 | |
| 127 | val = -( v - 251 ) * 256 - p[0] - 108; |
| 128 | p++; |
| 129 | } |
| 130 | |
| 131 | Exit: |
| 132 | return val; |
| 133 | |
| 134 | Bad: |
| 135 | val = 0; |
| 136 | goto Exit; |
| 137 | } |
| 138 | |
| 139 | |
Werner Lemberg | 551dd3c | 2008-05-04 13:37:38 +0000 | [diff] [blame] | 140 | static const FT_Long power_tens[] = |
| 141 | { |
| 142 | 1L, |
| 143 | 10L, |
| 144 | 100L, |
| 145 | 1000L, |
| 146 | 10000L, |
| 147 | 100000L, |
| 148 | 1000000L, |
| 149 | 10000000L, |
| 150 | 100000000L, |
| 151 | 1000000000L |
| 152 | }; |
| 153 | |
| 154 | |
David Turner | 19ed8af | 2000-12-08 02:42:29 +0000 | [diff] [blame] | 155 | /* read a real */ |
Werner Lemberg | 93616ec | 2001-06-27 19:46:12 +0000 | [diff] [blame] | 156 | static FT_Fixed |
| 157 | cff_parse_real( FT_Byte* start, |
| 158 | FT_Byte* limit, |
Werner Lemberg | 551dd3c | 2008-05-04 13:37:38 +0000 | [diff] [blame] | 159 | FT_Int power_ten, |
| 160 | FT_Int* scaling ) |
David Turner | 19ed8af | 2000-12-08 02:42:29 +0000 | [diff] [blame] | 161 | { |
Werner Lemberg | 551dd3c | 2008-05-04 13:37:38 +0000 | [diff] [blame] | 162 | FT_Byte* p = start; |
David Turner | 8edbcab | 2001-06-19 08:28:24 +0000 | [diff] [blame] | 163 | FT_UInt nib; |
| 164 | FT_UInt phase; |
David Turner | 19ed8af | 2000-12-08 02:42:29 +0000 | [diff] [blame] | 165 | |
Werner Lemberg | 551dd3c | 2008-05-04 13:37:38 +0000 | [diff] [blame] | 166 | FT_Long result, number, rest, exponent; |
| 167 | FT_Int sign = 0, exponent_sign = 0; |
| 168 | FT_Int exponent_add, integer_length, fraction_length; |
David Turner | 19ed8af | 2000-12-08 02:42:29 +0000 | [diff] [blame] | 169 | |
David Turner | 19ed8af | 2000-12-08 02:42:29 +0000 | [diff] [blame] | 170 | |
Werner Lemberg | 551dd3c | 2008-05-04 13:37:38 +0000 | [diff] [blame] | 171 | if ( scaling ) |
| 172 | *scaling = 0; |
| 173 | |
| 174 | result = 0; |
| 175 | |
| 176 | number = 0; |
| 177 | rest = 0; |
| 178 | exponent = 0; |
| 179 | |
| 180 | exponent_add = 0; |
| 181 | integer_length = 0; |
| 182 | fraction_length = 0; |
| 183 | |
| 184 | /* First of all, read the integer part. */ |
David Turner | 19ed8af | 2000-12-08 02:42:29 +0000 | [diff] [blame] | 185 | phase = 4; |
| 186 | |
| 187 | for (;;) |
| 188 | { |
David Turner | 19ed8af | 2000-12-08 02:42:29 +0000 | [diff] [blame] | 189 | /* If we entered this iteration with phase == 4, we need to */ |
Werner Lemberg | 6e87ed9 | 2007-01-26 22:18:56 +0000 | [diff] [blame] | 190 | /* read a new byte. This also skips past the initial 0x1E. */ |
David Turner | 19ed8af | 2000-12-08 02:42:29 +0000 | [diff] [blame] | 191 | if ( phase ) |
| 192 | { |
| 193 | p++; |
| 194 | |
| 195 | /* Make sure we don't read past the end. */ |
| 196 | if ( p >= limit ) |
Werner Lemberg | 551dd3c | 2008-05-04 13:37:38 +0000 | [diff] [blame] | 197 | goto Exit; |
David Turner | 19ed8af | 2000-12-08 02:42:29 +0000 | [diff] [blame] | 198 | } |
| 199 | |
| 200 | /* Get the nibble. */ |
| 201 | nib = ( p[0] >> phase ) & 0xF; |
| 202 | phase = 4 - phase; |
| 203 | |
| 204 | if ( nib == 0xE ) |
| 205 | sign = 1; |
| 206 | else if ( nib > 9 ) |
| 207 | break; |
| 208 | else |
Werner Lemberg | 551dd3c | 2008-05-04 13:37:38 +0000 | [diff] [blame] | 209 | { |
| 210 | /* Increase exponent if we can't add the digit. */ |
| 211 | if ( number >= 0xCCCCCCCL ) |
| 212 | exponent_add++; |
| 213 | /* Skip leading zeros. */ |
| 214 | else if ( nib || number ) |
| 215 | { |
| 216 | integer_length++; |
| 217 | number = number * 10 + nib; |
| 218 | } |
| 219 | } |
David Turner | 19ed8af | 2000-12-08 02:42:29 +0000 | [diff] [blame] | 220 | } |
| 221 | |
Werner Lemberg | 551dd3c | 2008-05-04 13:37:38 +0000 | [diff] [blame] | 222 | /* Read fraction part, if any. */ |
David Turner | 19ed8af | 2000-12-08 02:42:29 +0000 | [diff] [blame] | 223 | if ( nib == 0xa ) |
| 224 | for (;;) |
| 225 | { |
David Turner | 19ed8af | 2000-12-08 02:42:29 +0000 | [diff] [blame] | 226 | /* If we entered this iteration with phase == 4, we need */ |
| 227 | /* to read a new byte. */ |
| 228 | if ( phase ) |
Werner Lemberg | cc069be | 2000-12-08 16:17:16 +0000 | [diff] [blame] | 229 | { |
David Turner | 19ed8af | 2000-12-08 02:42:29 +0000 | [diff] [blame] | 230 | p++; |
| 231 | |
| 232 | /* Make sure we don't read past the end. */ |
| 233 | if ( p >= limit ) |
Werner Lemberg | 551dd3c | 2008-05-04 13:37:38 +0000 | [diff] [blame] | 234 | goto Exit; |
Werner Lemberg | cc069be | 2000-12-08 16:17:16 +0000 | [diff] [blame] | 235 | } |
David Turner | 19ed8af | 2000-12-08 02:42:29 +0000 | [diff] [blame] | 236 | |
| 237 | /* Get the nibble. */ |
| 238 | nib = ( p[0] >> phase ) & 0xF; |
| 239 | phase = 4 - phase; |
| 240 | if ( nib >= 10 ) |
| 241 | break; |
| 242 | |
Werner Lemberg | 551dd3c | 2008-05-04 13:37:38 +0000 | [diff] [blame] | 243 | /* Skip leading zeros if possible. */ |
| 244 | if ( !nib && !number ) |
| 245 | exponent_add--; |
| 246 | /* Only add digit if we don't overflow. */ |
| 247 | else if ( number < 0xCCCCCCCL ) |
David Turner | 19ed8af | 2000-12-08 02:42:29 +0000 | [diff] [blame] | 248 | { |
Werner Lemberg | 551dd3c | 2008-05-04 13:37:38 +0000 | [diff] [blame] | 249 | fraction_length++; |
| 250 | number = number * 10 + nib; |
David Turner | 19ed8af | 2000-12-08 02:42:29 +0000 | [diff] [blame] | 251 | } |
| 252 | } |
| 253 | |
Werner Lemberg | 551dd3c | 2008-05-04 13:37:38 +0000 | [diff] [blame] | 254 | /* Read exponent, if any. */ |
David Turner | 19ed8af | 2000-12-08 02:42:29 +0000 | [diff] [blame] | 255 | if ( nib == 12 ) |
| 256 | { |
Werner Lemberg | 4b8397c | 2004-08-29 16:50:09 +0000 | [diff] [blame] | 257 | exponent_sign = 1; |
| 258 | nib = 11; |
David Turner | 19ed8af | 2000-12-08 02:42:29 +0000 | [diff] [blame] | 259 | } |
| 260 | |
| 261 | if ( nib == 11 ) |
| 262 | { |
David Turner | 19ed8af | 2000-12-08 02:42:29 +0000 | [diff] [blame] | 263 | for (;;) |
| 264 | { |
Werner Lemberg | 551dd3c | 2008-05-04 13:37:38 +0000 | [diff] [blame] | 265 | /* If we entered this iteration with phase == 4, */ |
| 266 | /* we need to read a new byte. */ |
David Turner | 19ed8af | 2000-12-08 02:42:29 +0000 | [diff] [blame] | 267 | if ( phase ) |
Werner Lemberg | cc069be | 2000-12-08 16:17:16 +0000 | [diff] [blame] | 268 | { |
David Turner | 19ed8af | 2000-12-08 02:42:29 +0000 | [diff] [blame] | 269 | p++; |
| 270 | |
| 271 | /* Make sure we don't read past the end. */ |
| 272 | if ( p >= limit ) |
Werner Lemberg | 551dd3c | 2008-05-04 13:37:38 +0000 | [diff] [blame] | 273 | goto Exit; |
Werner Lemberg | cc069be | 2000-12-08 16:17:16 +0000 | [diff] [blame] | 274 | } |
David Turner | 19ed8af | 2000-12-08 02:42:29 +0000 | [diff] [blame] | 275 | |
| 276 | /* Get the nibble. */ |
| 277 | nib = ( p[0] >> phase ) & 0xF; |
| 278 | phase = 4 - phase; |
| 279 | if ( nib >= 10 ) |
| 280 | break; |
| 281 | |
Werner Lemberg | 4b8397c | 2004-08-29 16:50:09 +0000 | [diff] [blame] | 282 | exponent = exponent * 10 + nib; |
Werner Lemberg | 551dd3c | 2008-05-04 13:37:38 +0000 | [diff] [blame] | 283 | |
| 284 | /* Arbitrarily limit exponent. */ |
| 285 | if ( exponent > 1000 ) |
| 286 | goto Exit; |
David Turner | 19ed8af | 2000-12-08 02:42:29 +0000 | [diff] [blame] | 287 | } |
| 288 | |
Werner Lemberg | 4b8397c | 2004-08-29 16:50:09 +0000 | [diff] [blame] | 289 | if ( exponent_sign ) |
| 290 | exponent = -exponent; |
David Turner | 19ed8af | 2000-12-08 02:42:29 +0000 | [diff] [blame] | 291 | } |
| 292 | |
Werner Lemberg | 551dd3c | 2008-05-04 13:37:38 +0000 | [diff] [blame] | 293 | /* We don't check `power_ten' and `exponent_add'. */ |
| 294 | exponent += power_ten + exponent_add; |
Tom Kacvinsky | c27cd28 | 2001-02-07 01:11:54 +0000 | [diff] [blame] | 295 | |
Werner Lemberg | 551dd3c | 2008-05-04 13:37:38 +0000 | [diff] [blame] | 296 | if ( scaling ) |
Werner Lemberg | d156cab | 2007-12-14 07:48:32 +0000 | [diff] [blame] | 297 | { |
Werner Lemberg | 551dd3c | 2008-05-04 13:37:38 +0000 | [diff] [blame] | 298 | /* Only use `fraction_length'. */ |
| 299 | fraction_length += integer_length; |
| 300 | exponent += integer_length; |
Werner Lemberg | d156cab | 2007-12-14 07:48:32 +0000 | [diff] [blame] | 301 | |
Werner Lemberg | 551dd3c | 2008-05-04 13:37:38 +0000 | [diff] [blame] | 302 | if ( fraction_length <= 5 ) |
| 303 | { |
| 304 | if ( number > 0x7FFFL ) |
| 305 | { |
| 306 | result = FT_DivFix( number, 10 ); |
| 307 | *scaling = exponent - fraction_length + 1; |
| 308 | } |
| 309 | else |
| 310 | { |
| 311 | if ( exponent > 0 ) |
| 312 | { |
| 313 | FT_Int new_fraction_length, shift; |
| 314 | |
| 315 | |
| 316 | /* Make `scaling' as small as possible. */ |
| 317 | new_fraction_length = FT_MIN( exponent, 5 ); |
| 318 | exponent -= new_fraction_length; |
| 319 | shift = new_fraction_length - fraction_length; |
| 320 | |
| 321 | number *= power_tens[shift]; |
| 322 | if ( number > 0x7FFFL ) |
| 323 | { |
| 324 | number /= 10; |
| 325 | exponent += 1; |
| 326 | } |
| 327 | } |
| 328 | else |
| 329 | exponent -= fraction_length; |
| 330 | |
| 331 | result = number << 16; |
| 332 | *scaling = exponent; |
| 333 | } |
| 334 | } |
| 335 | else |
| 336 | { |
| 337 | if ( ( number / power_tens[fraction_length - 5] ) > 0x7FFFL ) |
| 338 | { |
| 339 | result = FT_DivFix( number, power_tens[fraction_length - 4] ); |
| 340 | *scaling = exponent - 4; |
| 341 | } |
| 342 | else |
| 343 | { |
| 344 | result = FT_DivFix( number, power_tens[fraction_length - 5] ); |
| 345 | *scaling = exponent - 5; |
| 346 | } |
| 347 | } |
Werner Lemberg | d156cab | 2007-12-14 07:48:32 +0000 | [diff] [blame] | 348 | } |
Werner Lemberg | 551dd3c | 2008-05-04 13:37:38 +0000 | [diff] [blame] | 349 | else |
Werner Lemberg | d156cab | 2007-12-14 07:48:32 +0000 | [diff] [blame] | 350 | { |
Werner Lemberg | 551dd3c | 2008-05-04 13:37:38 +0000 | [diff] [blame] | 351 | integer_length += exponent; |
| 352 | fraction_length -= exponent; |
Werner Lemberg | d156cab | 2007-12-14 07:48:32 +0000 | [diff] [blame] | 353 | |
Werner Lemberg | 551dd3c | 2008-05-04 13:37:38 +0000 | [diff] [blame] | 354 | /* Check for overflow and underflow. */ |
| 355 | if ( FT_ABS( integer_length ) > 5 ) |
| 356 | goto Exit; |
| 357 | |
| 358 | /* Convert into 16.16 format. */ |
| 359 | if ( fraction_length > 0 ) |
| 360 | { |
| 361 | if ( ( number / power_tens[fraction_length] ) > 0x7FFFL ) |
| 362 | goto Exit; |
| 363 | |
| 364 | result = FT_DivFix( number, power_tens[fraction_length] ); |
| 365 | } |
| 366 | else |
| 367 | { |
| 368 | number *= power_tens[-fraction_length]; |
| 369 | |
| 370 | if ( number > 0x7FFFL ) |
| 371 | goto Exit; |
| 372 | |
| 373 | result = number << 16; |
| 374 | } |
Werner Lemberg | d156cab | 2007-12-14 07:48:32 +0000 | [diff] [blame] | 375 | } |
| 376 | |
David Turner | 19ed8af | 2000-12-08 02:42:29 +0000 | [diff] [blame] | 377 | if ( sign ) |
| 378 | result = -result; |
| 379 | |
| 380 | Exit: |
| 381 | return result; |
David Turner | 19ed8af | 2000-12-08 02:42:29 +0000 | [diff] [blame] | 382 | } |
| 383 | |
| 384 | |
| 385 | /* read a number, either integer or real */ |
Werner Lemberg | 93616ec | 2001-06-27 19:46:12 +0000 | [diff] [blame] | 386 | static FT_Long |
| 387 | cff_parse_num( FT_Byte** d ) |
David Turner | 19ed8af | 2000-12-08 02:42:29 +0000 | [diff] [blame] | 388 | { |
Werner Lemberg | 551dd3c | 2008-05-04 13:37:38 +0000 | [diff] [blame] | 389 | return **d == 30 ? ( cff_parse_real( d[0], d[1], 0, NULL ) >> 16 ) |
| 390 | : cff_parse_integer( d[0], d[1] ); |
David Turner | 19ed8af | 2000-12-08 02:42:29 +0000 | [diff] [blame] | 391 | } |
| 392 | |
| 393 | |
Werner Lemberg | cc069be | 2000-12-08 16:17:16 +0000 | [diff] [blame] | 394 | /* read a floating point number, either integer or real */ |
Werner Lemberg | 93616ec | 2001-06-27 19:46:12 +0000 | [diff] [blame] | 395 | static FT_Fixed |
| 396 | cff_parse_fixed( FT_Byte** d ) |
David Turner | 19ed8af | 2000-12-08 02:42:29 +0000 | [diff] [blame] | 397 | { |
Werner Lemberg | 551dd3c | 2008-05-04 13:37:38 +0000 | [diff] [blame] | 398 | return **d == 30 ? cff_parse_real( d[0], d[1], 0, NULL ) |
| 399 | : cff_parse_integer( d[0], d[1] ) << 16; |
David Turner | 19ed8af | 2000-12-08 02:42:29 +0000 | [diff] [blame] | 400 | } |
| 401 | |
Werner Lemberg | 551dd3c | 2008-05-04 13:37:38 +0000 | [diff] [blame] | 402 | |
Tom Kacvinsky | c27cd28 | 2001-02-07 01:11:54 +0000 | [diff] [blame] | 403 | /* read a floating point number, either integer or real, */ |
Werner Lemberg | 551dd3c | 2008-05-04 13:37:38 +0000 | [diff] [blame] | 404 | /* but return `10^scaling' times the number read in */ |
Werner Lemberg | 93616ec | 2001-06-27 19:46:12 +0000 | [diff] [blame] | 405 | static FT_Fixed |
Werner Lemberg | 551dd3c | 2008-05-04 13:37:38 +0000 | [diff] [blame] | 406 | cff_parse_fixed_scaled( FT_Byte** d, |
| 407 | FT_Int scaling ) |
Tom Kacvinsky | c27cd28 | 2001-02-07 01:11:54 +0000 | [diff] [blame] | 408 | { |
Werner Lemberg | 500dc85 | 2001-02-10 17:45:01 +0000 | [diff] [blame] | 409 | return **d == |
Werner Lemberg | 551dd3c | 2008-05-04 13:37:38 +0000 | [diff] [blame] | 410 | 30 ? cff_parse_real( d[0], d[1], scaling, NULL ) |
| 411 | : (FT_Fixed)FT_MulFix( cff_parse_integer( d[0], d[1] ) << 16, |
| 412 | power_tens[scaling] ); |
Tom Kacvinsky | c27cd28 | 2001-02-07 01:11:54 +0000 | [diff] [blame] | 413 | } |
David Turner | 19ed8af | 2000-12-08 02:42:29 +0000 | [diff] [blame] | 414 | |
Werner Lemberg | 551dd3c | 2008-05-04 13:37:38 +0000 | [diff] [blame] | 415 | |
Werner Lemberg | e6e6ead | 2008-05-14 23:05:38 +0000 | [diff] [blame] | 416 | /* read a floating point number, either integer or real, */ |
| 417 | /* and return it as precise as possible -- `scaling' returns */ |
| 418 | /* the scaling factor (as a power of 10) */ |
| 419 | static FT_Fixed |
| 420 | cff_parse_fixed_dynamic( FT_Byte** d, |
| 421 | FT_Int* scaling ) |
| 422 | { |
| 423 | FT_ASSERT( scaling ); |
| 424 | |
| 425 | if ( **d == 30 ) |
| 426 | return cff_parse_real( d[0], d[1], 0, scaling ); |
| 427 | else |
| 428 | { |
| 429 | FT_Long number; |
| 430 | FT_Int integer_length; |
| 431 | |
| 432 | |
| 433 | number = cff_parse_integer( d[0], d[1] ); |
| 434 | |
| 435 | if ( number > 0x7FFFL ) |
| 436 | { |
| 437 | for ( integer_length = 5; integer_length < 10; integer_length++ ) |
| 438 | if ( number < power_tens[integer_length] ) |
| 439 | break; |
| 440 | |
| 441 | if ( ( number / power_tens[integer_length - 5] ) > 0x7FFFL ) |
| 442 | { |
| 443 | *scaling = integer_length - 4; |
| 444 | return FT_DivFix( number, power_tens[integer_length - 4] ); |
| 445 | } |
| 446 | else |
| 447 | { |
| 448 | *scaling = integer_length - 5; |
| 449 | return FT_DivFix( number, power_tens[integer_length - 5] ); |
| 450 | } |
| 451 | } |
| 452 | else |
| 453 | { |
| 454 | *scaling = 0; |
| 455 | return number << 16; |
| 456 | } |
| 457 | } |
| 458 | } |
| 459 | |
| 460 | |
Werner Lemberg | 93616ec | 2001-06-27 19:46:12 +0000 | [diff] [blame] | 461 | static FT_Error |
Werner Lemberg | 48c984b | 2002-03-30 16:41:09 +0000 | [diff] [blame] | 462 | cff_parse_font_matrix( CFF_Parser parser ) |
David Turner | 19ed8af | 2000-12-08 02:42:29 +0000 | [diff] [blame] | 463 | { |
David Turner | ab4fc4d | 2002-03-14 08:57:10 +0000 | [diff] [blame] | 464 | CFF_FontRecDict dict = (CFF_FontRecDict)parser->object; |
Werner Lemberg | 48c984b | 2002-03-30 16:41:09 +0000 | [diff] [blame] | 465 | FT_Matrix* matrix = &dict->font_matrix; |
| 466 | FT_Vector* offset = &dict->font_offset; |
Werner Lemberg | e6e6ead | 2008-05-14 23:05:38 +0000 | [diff] [blame] | 467 | FT_ULong* upm = &dict->units_per_em; |
Werner Lemberg | 48c984b | 2002-03-30 16:41:09 +0000 | [diff] [blame] | 468 | FT_Byte** data = parser->stack; |
Werner Lemberg | 551dd3c | 2008-05-04 13:37:38 +0000 | [diff] [blame] | 469 | FT_Error error = CFF_Err_Stack_Underflow; |
David Turner | 19ed8af | 2000-12-08 02:42:29 +0000 | [diff] [blame] | 470 | |
Werner Lemberg | 6b76663 | 2000-12-30 22:14:58 +0000 | [diff] [blame] | 471 | |
David Turner | 19ed8af | 2000-12-08 02:42:29 +0000 | [diff] [blame] | 472 | if ( parser->top >= parser->stack + 6 ) |
| 473 | { |
Werner Lemberg | e6e6ead | 2008-05-14 23:05:38 +0000 | [diff] [blame] | 474 | FT_Int scaling; |
Tom Kacvinsky | a05c02c | 2000-12-24 09:57:28 +0000 | [diff] [blame] | 475 | |
Tom Kacvinsky | a05c02c | 2000-12-24 09:57:28 +0000 | [diff] [blame] | 476 | |
Tom Kacvinsky | 8d1f604 | 2001-01-03 00:21:59 +0000 | [diff] [blame] | 477 | error = CFF_Err_Ok; |
Werner Lemberg | e6e6ead | 2008-05-14 23:05:38 +0000 | [diff] [blame] | 478 | |
| 479 | /* We expect a well-formed font matrix, this is, the matrix elements */ |
| 480 | /* `xx' and `yy' are of approximately the same magnitude. To avoid */ |
| 481 | /* loss of precision, we use the magnitude of element `xx' to scale */ |
| 482 | /* all other elements. The scaling factor is then contained in the */ |
| 483 | /* `units_per_em' value. */ |
| 484 | |
| 485 | matrix->xx = cff_parse_fixed_dynamic( data++, &scaling ); |
| 486 | |
| 487 | scaling = -scaling; |
| 488 | |
| 489 | if ( scaling < 0 || scaling > 9 ) |
| 490 | { |
| 491 | /* Return default matrix in case of unlikely values. */ |
| 492 | matrix->xx = 0x10000L; |
| 493 | matrix->yx = 0; |
| 494 | matrix->yx = 0; |
| 495 | matrix->yy = 0x10000L; |
| 496 | offset->x = 0; |
| 497 | offset->y = 0; |
| 498 | *upm = 1; |
| 499 | |
| 500 | goto Exit; |
| 501 | } |
| 502 | |
| 503 | matrix->yx = cff_parse_fixed_scaled( data++, scaling ); |
| 504 | matrix->xy = cff_parse_fixed_scaled( data++, scaling ); |
| 505 | matrix->yy = cff_parse_fixed_scaled( data++, scaling ); |
| 506 | offset->x = cff_parse_fixed_scaled( data++, scaling ); |
| 507 | offset->y = cff_parse_fixed_scaled( data, scaling ); |
| 508 | |
| 509 | *upm = power_tens[scaling]; |
David Turner | 19ed8af | 2000-12-08 02:42:29 +0000 | [diff] [blame] | 510 | } |
| 511 | |
Werner Lemberg | e6e6ead | 2008-05-14 23:05:38 +0000 | [diff] [blame] | 512 | Exit: |
David Turner | 19ed8af | 2000-12-08 02:42:29 +0000 | [diff] [blame] | 513 | return error; |
| 514 | } |
| 515 | |
| 516 | |
Werner Lemberg | 93616ec | 2001-06-27 19:46:12 +0000 | [diff] [blame] | 517 | static FT_Error |
Werner Lemberg | 48c984b | 2002-03-30 16:41:09 +0000 | [diff] [blame] | 518 | cff_parse_font_bbox( CFF_Parser parser ) |
David Turner | 19ed8af | 2000-12-08 02:42:29 +0000 | [diff] [blame] | 519 | { |
David Turner | ab4fc4d | 2002-03-14 08:57:10 +0000 | [diff] [blame] | 520 | CFF_FontRecDict dict = (CFF_FontRecDict)parser->object; |
Werner Lemberg | 48c984b | 2002-03-30 16:41:09 +0000 | [diff] [blame] | 521 | FT_BBox* bbox = &dict->font_bbox; |
| 522 | FT_Byte** data = parser->stack; |
| 523 | FT_Error error; |
David Turner | 19ed8af | 2000-12-08 02:42:29 +0000 | [diff] [blame] | 524 | |
| 525 | |
Tom Kacvinsky | 8d1f604 | 2001-01-03 00:21:59 +0000 | [diff] [blame] | 526 | error = CFF_Err_Stack_Underflow; |
David Turner | 19ed8af | 2000-12-08 02:42:29 +0000 | [diff] [blame] | 527 | |
| 528 | if ( parser->top >= parser->stack + 4 ) |
| 529 | { |
Tom Kacvinsky | c24eff8 | 2001-03-17 19:01:25 +0000 | [diff] [blame] | 530 | bbox->xMin = FT_RoundFix( cff_parse_fixed( data++ ) ); |
| 531 | bbox->yMin = FT_RoundFix( cff_parse_fixed( data++ ) ); |
| 532 | bbox->xMax = FT_RoundFix( cff_parse_fixed( data++ ) ); |
| 533 | bbox->yMax = FT_RoundFix( cff_parse_fixed( data ) ); |
Tom Kacvinsky | 8d1f604 | 2001-01-03 00:21:59 +0000 | [diff] [blame] | 534 | error = CFF_Err_Ok; |
David Turner | 19ed8af | 2000-12-08 02:42:29 +0000 | [diff] [blame] | 535 | } |
| 536 | |
| 537 | return error; |
| 538 | } |
| 539 | |
| 540 | |
Werner Lemberg | 93616ec | 2001-06-27 19:46:12 +0000 | [diff] [blame] | 541 | static FT_Error |
Werner Lemberg | 48c984b | 2002-03-30 16:41:09 +0000 | [diff] [blame] | 542 | cff_parse_private_dict( CFF_Parser parser ) |
David Turner | 19ed8af | 2000-12-08 02:42:29 +0000 | [diff] [blame] | 543 | { |
David Turner | ab4fc4d | 2002-03-14 08:57:10 +0000 | [diff] [blame] | 544 | CFF_FontRecDict dict = (CFF_FontRecDict)parser->object; |
Werner Lemberg | 48c984b | 2002-03-30 16:41:09 +0000 | [diff] [blame] | 545 | FT_Byte** data = parser->stack; |
| 546 | FT_Error error; |
David Turner | 19ed8af | 2000-12-08 02:42:29 +0000 | [diff] [blame] | 547 | |
| 548 | |
Tom Kacvinsky | 8d1f604 | 2001-01-03 00:21:59 +0000 | [diff] [blame] | 549 | error = CFF_Err_Stack_Underflow; |
David Turner | 19ed8af | 2000-12-08 02:42:29 +0000 | [diff] [blame] | 550 | |
| 551 | if ( parser->top >= parser->stack + 2 ) |
| 552 | { |
| 553 | dict->private_size = cff_parse_num( data++ ); |
| 554 | dict->private_offset = cff_parse_num( data ); |
Tom Kacvinsky | 8d1f604 | 2001-01-03 00:21:59 +0000 | [diff] [blame] | 555 | error = CFF_Err_Ok; |
David Turner | 19ed8af | 2000-12-08 02:42:29 +0000 | [diff] [blame] | 556 | } |
| 557 | |
| 558 | return error; |
| 559 | } |
| 560 | |
| 561 | |
Werner Lemberg | 93616ec | 2001-06-27 19:46:12 +0000 | [diff] [blame] | 562 | static FT_Error |
Werner Lemberg | 48c984b | 2002-03-30 16:41:09 +0000 | [diff] [blame] | 563 | cff_parse_cid_ros( CFF_Parser parser ) |
David Turner | 19ed8af | 2000-12-08 02:42:29 +0000 | [diff] [blame] | 564 | { |
David Turner | ab4fc4d | 2002-03-14 08:57:10 +0000 | [diff] [blame] | 565 | CFF_FontRecDict dict = (CFF_FontRecDict)parser->object; |
Werner Lemberg | 48c984b | 2002-03-30 16:41:09 +0000 | [diff] [blame] | 566 | FT_Byte** data = parser->stack; |
| 567 | FT_Error error; |
David Turner | 19ed8af | 2000-12-08 02:42:29 +0000 | [diff] [blame] | 568 | |
| 569 | |
Tom Kacvinsky | 8d1f604 | 2001-01-03 00:21:59 +0000 | [diff] [blame] | 570 | error = CFF_Err_Stack_Underflow; |
David Turner | 19ed8af | 2000-12-08 02:42:29 +0000 | [diff] [blame] | 571 | |
| 572 | if ( parser->top >= parser->stack + 3 ) |
| 573 | { |
| 574 | dict->cid_registry = (FT_UInt)cff_parse_num ( data++ ); |
| 575 | dict->cid_ordering = (FT_UInt)cff_parse_num ( data++ ); |
| 576 | dict->cid_supplement = (FT_ULong)cff_parse_num( data ); |
Tom Kacvinsky | 8d1f604 | 2001-01-03 00:21:59 +0000 | [diff] [blame] | 577 | error = CFF_Err_Ok; |
David Turner | 19ed8af | 2000-12-08 02:42:29 +0000 | [diff] [blame] | 578 | } |
| 579 | |
| 580 | return error; |
| 581 | } |
| 582 | |
| 583 | |
| 584 | #define CFF_FIELD_NUM( code, name ) \ |
| 585 | CFF_FIELD( code, name, cff_kind_num ) |
| 586 | #define CFF_FIELD_FIXED( code, name ) \ |
| 587 | CFF_FIELD( code, name, cff_kind_fixed ) |
Werner Lemberg | bf7c832 | 2003-06-06 05:07:53 +0000 | [diff] [blame] | 588 | #define CFF_FIELD_FIXED_1000( code, name ) \ |
| 589 | CFF_FIELD( code, name, cff_kind_fixed_thousand ) |
David Turner | 19ed8af | 2000-12-08 02:42:29 +0000 | [diff] [blame] | 590 | #define CFF_FIELD_STRING( code, name ) \ |
| 591 | CFF_FIELD( code, name, cff_kind_string ) |
| 592 | #define CFF_FIELD_BOOL( code, name ) \ |
| 593 | CFF_FIELD( code, name, cff_kind_bool ) |
| 594 | #define CFF_FIELD_DELTA( code, name, max ) \ |
| 595 | CFF_FIELD( code, name, cff_kind_delta ) |
| 596 | |
| 597 | #define CFF_FIELD_CALLBACK( code, name ) \ |
| 598 | { \ |
| 599 | cff_kind_callback, \ |
| 600 | code | CFFCODE, \ |
| 601 | 0, 0, \ |
| 602 | cff_parse_ ## name, \ |
| 603 | 0, 0 \ |
| 604 | }, |
| 605 | |
| 606 | #undef CFF_FIELD |
| 607 | #define CFF_FIELD( code, name, kind ) \ |
| 608 | { \ |
| 609 | kind, \ |
| 610 | code | CFFCODE, \ |
| 611 | FT_FIELD_OFFSET( name ), \ |
| 612 | FT_FIELD_SIZE( name ), \ |
| 613 | 0, 0, 0 \ |
| 614 | }, |
| 615 | |
| 616 | #undef CFF_FIELD_DELTA |
| 617 | #define CFF_FIELD_DELTA( code, name, max ) \ |
| 618 | { \ |
| 619 | cff_kind_delta, \ |
| 620 | code | CFFCODE, \ |
| 621 | FT_FIELD_OFFSET( name ), \ |
| 622 | FT_FIELD_SIZE_DELTA( name ), \ |
| 623 | 0, \ |
| 624 | max, \ |
| 625 | FT_FIELD_OFFSET( num_ ## name ) \ |
| 626 | }, |
| 627 | |
| 628 | #define CFFCODE_TOPDICT 0x1000 |
| 629 | #define CFFCODE_PRIVATE 0x2000 |
| 630 | |
| 631 | static const CFF_Field_Handler cff_field_handlers[] = |
| 632 | { |
| 633 | |
David Turner | 8d3a401 | 2001-03-20 11:14:24 +0000 | [diff] [blame] | 634 | #include "cfftoken.h" |
David Turner | 19ed8af | 2000-12-08 02:42:29 +0000 | [diff] [blame] | 635 | |
| 636 | { 0, 0, 0, 0, 0, 0, 0 } |
| 637 | }; |
| 638 | |
| 639 | |
David Turner | bc82f1b | 2002-03-01 02:26:22 +0000 | [diff] [blame] | 640 | FT_LOCAL_DEF( FT_Error ) |
David Turner | b9b2cac | 2002-07-10 16:52:06 +0000 | [diff] [blame] | 641 | cff_parser_run( CFF_Parser parser, |
Werner Lemberg | 48c984b | 2002-03-30 16:41:09 +0000 | [diff] [blame] | 642 | FT_Byte* start, |
| 643 | FT_Byte* limit ) |
David Turner | 19ed8af | 2000-12-08 02:42:29 +0000 | [diff] [blame] | 644 | { |
| 645 | FT_Byte* p = start; |
Tom Kacvinsky | 8d1f604 | 2001-01-03 00:21:59 +0000 | [diff] [blame] | 646 | FT_Error error = CFF_Err_Ok; |
David Turner | 19ed8af | 2000-12-08 02:42:29 +0000 | [diff] [blame] | 647 | |
| 648 | |
| 649 | parser->top = parser->stack; |
| 650 | parser->start = start; |
| 651 | parser->limit = limit; |
| 652 | parser->cursor = start; |
| 653 | |
| 654 | while ( p < limit ) |
| 655 | { |
David Turner | 8edbcab | 2001-06-19 08:28:24 +0000 | [diff] [blame] | 656 | FT_UInt v = *p; |
David Turner | 19ed8af | 2000-12-08 02:42:29 +0000 | [diff] [blame] | 657 | |
| 658 | |
| 659 | if ( v >= 27 && v != 31 ) |
| 660 | { |
| 661 | /* it's a number; we will push its position on the stack */ |
| 662 | if ( parser->top - parser->stack >= CFF_MAX_STACK_DEPTH ) |
| 663 | goto Stack_Overflow; |
| 664 | |
| 665 | *parser->top ++ = p; |
| 666 | |
| 667 | /* now, skip it */ |
| 668 | if ( v == 30 ) |
| 669 | { |
| 670 | /* skip real number */ |
| 671 | p++; |
| 672 | for (;;) |
| 673 | { |
| 674 | if ( p >= limit ) |
| 675 | goto Syntax_Error; |
| 676 | v = p[0] >> 4; |
| 677 | if ( v == 15 ) |
| 678 | break; |
| 679 | v = p[0] & 0xF; |
| 680 | if ( v == 15 ) |
| 681 | break; |
| 682 | p++; |
| 683 | } |
| 684 | } |
| 685 | else if ( v == 28 ) |
| 686 | p += 2; |
| 687 | else if ( v == 29 ) |
| 688 | p += 4; |
| 689 | else if ( v > 246 ) |
| 690 | p += 1; |
| 691 | } |
| 692 | else |
| 693 | { |
| 694 | /* This is not a number, hence it's an operator. Compute its code */ |
| 695 | /* and look for it in our current list. */ |
| 696 | |
Werner Lemberg | cc069be | 2000-12-08 16:17:16 +0000 | [diff] [blame] | 697 | FT_UInt code; |
| 698 | FT_UInt num_args = (FT_UInt) |
| 699 | ( parser->top - parser->stack ); |
David Turner | 19ed8af | 2000-12-08 02:42:29 +0000 | [diff] [blame] | 700 | const CFF_Field_Handler* field; |
| 701 | |
| 702 | |
David Turner | 19ed8af | 2000-12-08 02:42:29 +0000 | [diff] [blame] | 703 | *parser->top = p; |
| 704 | code = v; |
| 705 | if ( v == 12 ) |
| 706 | { |
| 707 | /* two byte operator */ |
| 708 | p++; |
David Turner | 25f845a | 2002-09-09 23:45:29 +0000 | [diff] [blame] | 709 | if ( p >= limit ) |
| 710 | goto Syntax_Error; |
| 711 | |
David Turner | 19ed8af | 2000-12-08 02:42:29 +0000 | [diff] [blame] | 712 | code = 0x100 | p[0]; |
| 713 | } |
| 714 | code = code | parser->object_code; |
| 715 | |
| 716 | for ( field = cff_field_handlers; field->kind; field++ ) |
| 717 | { |
| 718 | if ( field->code == (FT_Int)code ) |
| 719 | { |
| 720 | /* we found our field's handler; read it */ |
| 721 | FT_Long val; |
| 722 | FT_Byte* q = (FT_Byte*)parser->object + field->offset; |
| 723 | |
Werner Lemberg | cc069be | 2000-12-08 16:17:16 +0000 | [diff] [blame] | 724 | |
David Turner | 25f845a | 2002-09-09 23:45:29 +0000 | [diff] [blame] | 725 | /* check that we have enough arguments -- except for */ |
| 726 | /* delta encoded arrays, which can be empty */ |
| 727 | if ( field->kind != cff_kind_delta && num_args < 1 ) |
| 728 | goto Stack_Underflow; |
| 729 | |
David Turner | 19ed8af | 2000-12-08 02:42:29 +0000 | [diff] [blame] | 730 | switch ( field->kind ) |
| 731 | { |
| 732 | case cff_kind_bool: |
| 733 | case cff_kind_string: |
| 734 | case cff_kind_num: |
| 735 | val = cff_parse_num( parser->stack ); |
| 736 | goto Store_Number; |
| 737 | |
| 738 | case cff_kind_fixed: |
| 739 | val = cff_parse_fixed( parser->stack ); |
Werner Lemberg | bf7c832 | 2003-06-06 05:07:53 +0000 | [diff] [blame] | 740 | goto Store_Number; |
| 741 | |
| 742 | case cff_kind_fixed_thousand: |
Werner Lemberg | 551dd3c | 2008-05-04 13:37:38 +0000 | [diff] [blame] | 743 | val = cff_parse_fixed_scaled( parser->stack, 3 ); |
David Turner | 19ed8af | 2000-12-08 02:42:29 +0000 | [diff] [blame] | 744 | |
| 745 | Store_Number: |
| 746 | switch ( field->size ) |
| 747 | { |
Werner Lemberg | 2b32a17 | 2004-04-24 06:06:39 +0000 | [diff] [blame] | 748 | case (8 / FT_CHAR_BIT): |
David Turner | 19ed8af | 2000-12-08 02:42:29 +0000 | [diff] [blame] | 749 | *(FT_Byte*)q = (FT_Byte)val; |
| 750 | break; |
| 751 | |
Werner Lemberg | 2b32a17 | 2004-04-24 06:06:39 +0000 | [diff] [blame] | 752 | case (16 / FT_CHAR_BIT): |
David Turner | 19ed8af | 2000-12-08 02:42:29 +0000 | [diff] [blame] | 753 | *(FT_Short*)q = (FT_Short)val; |
| 754 | break; |
| 755 | |
Werner Lemberg | 2b32a17 | 2004-04-24 06:06:39 +0000 | [diff] [blame] | 756 | case (32 / FT_CHAR_BIT): |
David Turner | 19ed8af | 2000-12-08 02:42:29 +0000 | [diff] [blame] | 757 | *(FT_Int32*)q = (FT_Int)val; |
| 758 | break; |
| 759 | |
Werner Lemberg | 2b32a17 | 2004-04-24 06:06:39 +0000 | [diff] [blame] | 760 | default: /* for 64-bit systems */ |
David Turner | 19ed8af | 2000-12-08 02:42:29 +0000 | [diff] [blame] | 761 | *(FT_Long*)q = val; |
| 762 | } |
| 763 | break; |
| 764 | |
| 765 | case cff_kind_delta: |
| 766 | { |
| 767 | FT_Byte* qcount = (FT_Byte*)parser->object + |
| 768 | field->count_offset; |
| 769 | |
| 770 | FT_Byte** data = parser->stack; |
| 771 | |
| 772 | |
| 773 | if ( num_args > field->array_max ) |
| 774 | num_args = field->array_max; |
| 775 | |
| 776 | /* store count */ |
| 777 | *qcount = (FT_Byte)num_args; |
| 778 | |
| 779 | val = 0; |
| 780 | while ( num_args > 0 ) |
| 781 | { |
| 782 | val += cff_parse_num( data++ ); |
| 783 | switch ( field->size ) |
| 784 | { |
Werner Lemberg | 2b32a17 | 2004-04-24 06:06:39 +0000 | [diff] [blame] | 785 | case (8 / FT_CHAR_BIT): |
David Turner | 19ed8af | 2000-12-08 02:42:29 +0000 | [diff] [blame] | 786 | *(FT_Byte*)q = (FT_Byte)val; |
| 787 | break; |
| 788 | |
Werner Lemberg | 2b32a17 | 2004-04-24 06:06:39 +0000 | [diff] [blame] | 789 | case (16 / FT_CHAR_BIT): |
David Turner | 19ed8af | 2000-12-08 02:42:29 +0000 | [diff] [blame] | 790 | *(FT_Short*)q = (FT_Short)val; |
| 791 | break; |
| 792 | |
Werner Lemberg | 2b32a17 | 2004-04-24 06:06:39 +0000 | [diff] [blame] | 793 | case (32 / FT_CHAR_BIT): |
David Turner | 19ed8af | 2000-12-08 02:42:29 +0000 | [diff] [blame] | 794 | *(FT_Int32*)q = (FT_Int)val; |
| 795 | break; |
| 796 | |
| 797 | default: /* for 64-bit systems */ |
| 798 | *(FT_Long*)q = val; |
| 799 | } |
| 800 | |
| 801 | q += field->size; |
| 802 | num_args--; |
| 803 | } |
| 804 | } |
| 805 | break; |
| 806 | |
| 807 | default: /* callback */ |
| 808 | error = field->reader( parser ); |
| 809 | if ( error ) |
| 810 | goto Exit; |
| 811 | } |
| 812 | goto Found; |
| 813 | } |
| 814 | } |
| 815 | |
| 816 | /* this is an unknown operator, or it is unsupported; */ |
| 817 | /* we will ignore it for now. */ |
| 818 | |
| 819 | Found: |
| 820 | /* clear stack */ |
| 821 | parser->top = parser->stack; |
| 822 | } |
| 823 | p++; |
| 824 | } |
| 825 | |
| 826 | Exit: |
| 827 | return error; |
| 828 | |
| 829 | Stack_Overflow: |
Tom Kacvinsky | 8d1f604 | 2001-01-03 00:21:59 +0000 | [diff] [blame] | 830 | error = CFF_Err_Invalid_Argument; |
David Turner | 19ed8af | 2000-12-08 02:42:29 +0000 | [diff] [blame] | 831 | goto Exit; |
| 832 | |
| 833 | Stack_Underflow: |
Tom Kacvinsky | 8d1f604 | 2001-01-03 00:21:59 +0000 | [diff] [blame] | 834 | error = CFF_Err_Invalid_Argument; |
David Turner | 19ed8af | 2000-12-08 02:42:29 +0000 | [diff] [blame] | 835 | goto Exit; |
| 836 | |
| 837 | Syntax_Error: |
Tom Kacvinsky | 8d1f604 | 2001-01-03 00:21:59 +0000 | [diff] [blame] | 838 | error = CFF_Err_Invalid_Argument; |
David Turner | 19ed8af | 2000-12-08 02:42:29 +0000 | [diff] [blame] | 839 | goto Exit; |
| 840 | } |
| 841 | |
| 842 | |
| 843 | /* END */ |