| File: | root/firefox-clang/gfx/cairo/cairo/src/cairo-cff-subset.c |
| Warning: | line 1140, column 13 Value stored to 'p' is never read |
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| 1 | /* -*- Mode: c; tab-width: 8; c-basic-offset: 4; indent-tabs-mode: t; -*- */ |
| 2 | /* cairo - a vector graphics library with display and print output |
| 3 | * |
| 4 | * Copyright © 2006 Adrian Johnson |
| 5 | * |
| 6 | * This library is free software; you can redistribute it and/or |
| 7 | * modify it either under the terms of the GNU Lesser General Public |
| 8 | * License version 2.1 as published by the Free Software Foundation |
| 9 | * (the "LGPL") or, at your option, under the terms of the Mozilla |
| 10 | * Public License Version 1.1 (the "MPL"). If you do not alter this |
| 11 | * notice, a recipient may use your version of this file under either |
| 12 | * the MPL or the LGPL. |
| 13 | * |
| 14 | * You should have received a copy of the LGPL along with this library |
| 15 | * in the file COPYING-LGPL-2.1; if not, write to the Free Software |
| 16 | * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA |
| 17 | * You should have received a copy of the MPL along with this library |
| 18 | * in the file COPYING-MPL-1.1 |
| 19 | * |
| 20 | * The contents of this file are subject to the Mozilla Public License |
| 21 | * Version 1.1 (the "License"); you may not use this file except in |
| 22 | * compliance with the License. You may obtain a copy of the License at |
| 23 | * http://www.mozilla.org/MPL/ |
| 24 | * |
| 25 | * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY |
| 26 | * OF ANY KIND, either express or implied. See the LGPL or the MPL for |
| 27 | * the specific language governing rights and limitations. |
| 28 | * |
| 29 | * The Original Code is the cairo graphics library. |
| 30 | * |
| 31 | * The Initial Developer of the Original Code is Adrian Johnson. |
| 32 | * |
| 33 | * Contributor(s): |
| 34 | * Adrian Johnson <ajohnson@redneon.com> |
| 35 | * Eugeniy Meshcheryakov <eugen@debian.org> |
| 36 | */ |
| 37 | |
| 38 | /* |
| 39 | * Useful links: |
| 40 | * http://www.adobe.com/content/dam/Adobe/en/devnet/font/pdfs/5176.CFF.pdf |
| 41 | * http://www.adobe.com/content/dam/Adobe/en/devnet/font/pdfs/5177.Type2.pdf |
| 42 | */ |
| 43 | |
| 44 | #define _DEFAULT_SOURCE1 /* for snprintf(), strdup() */ |
| 45 | #include "cairoint.h" |
| 46 | |
| 47 | #include "cairo-array-private.h" |
| 48 | #include "cairo-error-private.h" |
| 49 | |
| 50 | #if CAIRO_HAS_FONT_SUBSET1 |
| 51 | |
| 52 | #include "cairo-scaled-font-subsets-private.h" |
| 53 | #include "cairo-truetype-subset-private.h" |
| 54 | #include <string.h> |
| 55 | #include <locale.h> |
| 56 | |
| 57 | /* CFF Dict Operators. If the high byte is 0 the command is encoded |
| 58 | * with a single byte. */ |
| 59 | #define BASEFONTNAME_OP0x0c16 0x0c16 |
| 60 | #define CIDCOUNT_OP0x0c22 0x0c22 |
| 61 | #define CHARSET_OP0x000f 0x000f |
| 62 | #define CHARSTRINGS_OP0x0011 0x0011 |
| 63 | #define COPYRIGHT_OP0x0c00 0x0c00 |
| 64 | #define DEFAULTWIDTH_OP0x0014 0x0014 |
| 65 | #define ENCODING_OP0x0010 0x0010 |
| 66 | #define FAMILYNAME_OP0x0003 0x0003 |
| 67 | #define FDARRAY_OP0x0c24 0x0c24 |
| 68 | #define FDSELECT_OP0x0c25 0x0c25 |
| 69 | #define FONTBBOX_OP0x0005 0x0005 |
| 70 | #define FONTMATRIX_OP0x0c07 0x0c07 |
| 71 | #define FONTNAME_OP0x0c26 0x0c26 |
| 72 | #define FULLNAME_OP0x0002 0x0002 |
| 73 | #define LOCAL_SUB_OP0x0013 0x0013 |
| 74 | #define NOMINALWIDTH_OP0x0015 0x0015 |
| 75 | #define NOTICE_OP0x0001 0x0001 |
| 76 | #define POSTSCRIPT_OP0x0c15 0x0c15 |
| 77 | #define PRIVATE_OP0x0012 0x0012 |
| 78 | #define ROS_OP0x0c1e 0x0c1e |
| 79 | #define UNIQUEID_OP0x000d 0x000d |
| 80 | #define VERSION_OP0x0000 0x0000 |
| 81 | #define WEIGHT_OP0x0004 0x0004 |
| 82 | #define XUID_OP0x000e 0x000e |
| 83 | #define BLUEVALUES_OP0x0006 0x0006 |
| 84 | #define OTHERBLUES_OP0x0007 0x0007 |
| 85 | #define FAMILYBLUES_OP0x0008 0x0008 |
| 86 | #define FAMILYOTHERBLUES_OP0x0009 0x0009 |
| 87 | #define STEMSNAPH_OP0x0c0c 0x0c0c |
| 88 | #define STEMSNAPV_OP0x0c0d 0x0c0d |
| 89 | |
| 90 | #define NUM_STD_STRINGS391 391 |
| 91 | |
| 92 | /* Type 2 Charstring operators */ |
| 93 | #define TYPE2_hstem0x0001 0x0001 |
| 94 | #define TYPE2_vstem0x0003 0x0003 |
| 95 | #define TYPE2_callsubr0x000a 0x000a |
| 96 | |
| 97 | #define TYPE2_return0x000b 0x000b |
| 98 | #define TYPE2_endchar0x000e 0x000e |
| 99 | |
| 100 | #define TYPE2_hstemhm0x0012 0x0012 |
| 101 | #define TYPE2_hintmask0x0013 0x0013 |
| 102 | #define TYPE2_cntrmask0x0014 0x0014 |
| 103 | #define TYPE2_vstemhm0x0017 0x0017 |
| 104 | #define TYPE2_callgsubr0x001d 0x001d |
| 105 | |
| 106 | #define TYPE2_rmoveto0x0015 0x0015 |
| 107 | #define TYPE2_hmoveto0x0016 0x0016 |
| 108 | #define TYPE2_vmoveto0x0004 0x0004 |
| 109 | |
| 110 | |
| 111 | #define MAX_SUBROUTINE_NESTING10 10 /* From Type2 Charstring spec */ |
| 112 | |
| 113 | |
| 114 | typedef struct _cff_header { |
| 115 | uint8_t major; |
| 116 | uint8_t minor; |
| 117 | uint8_t header_size; |
| 118 | uint8_t offset_size; |
| 119 | } cff_header_t; |
| 120 | |
| 121 | typedef struct _cff_index_element { |
| 122 | cairo_bool_t is_copy; |
| 123 | unsigned char *data; |
| 124 | int length; |
| 125 | } cff_index_element_t; |
| 126 | |
| 127 | typedef struct _cff_dict_operator { |
| 128 | cairo_hash_entry_t base; |
| 129 | |
| 130 | unsigned short operator; |
| 131 | unsigned char *operand; |
| 132 | int operand_length; |
| 133 | int operand_offset; |
| 134 | } cff_dict_operator_t; |
| 135 | |
| 136 | typedef struct _cairo_cff_font { |
| 137 | |
| 138 | cairo_scaled_font_subset_t *scaled_font_subset; |
| 139 | const cairo_scaled_font_backend_t *backend; |
| 140 | |
| 141 | /* Font Data */ |
| 142 | unsigned char *data; |
| 143 | unsigned long data_length; |
| 144 | unsigned char *current_ptr; |
| 145 | unsigned char *data_end; |
| 146 | cff_header_t *header; |
| 147 | char *font_name; |
| 148 | char *ps_name; |
| 149 | cairo_hash_table_t *top_dict; |
| 150 | cairo_hash_table_t *private_dict; |
| 151 | cairo_array_t strings_index; |
| 152 | cairo_array_t charstrings_index; |
| 153 | cairo_array_t global_sub_index; |
| 154 | cairo_array_t local_sub_index; |
| 155 | unsigned char *charset; |
| 156 | int num_glyphs; |
| 157 | cairo_bool_t is_cid; |
| 158 | cairo_bool_t is_opentype; |
| 159 | int units_per_em; |
| 160 | int global_sub_bias; |
| 161 | int local_sub_bias; |
| 162 | double default_width; |
| 163 | double nominal_width; |
| 164 | |
| 165 | /* CID Font Data */ |
| 166 | int *fdselect; |
| 167 | unsigned int num_fontdicts; |
| 168 | cairo_hash_table_t **fd_dict; |
| 169 | cairo_hash_table_t **fd_private_dict; |
| 170 | cairo_array_t *fd_local_sub_index; |
| 171 | int *fd_local_sub_bias; |
| 172 | double *fd_default_width; |
| 173 | double *fd_nominal_width; |
| 174 | |
| 175 | /* Subsetted Font Data */ |
| 176 | char *subset_font_name; |
| 177 | cairo_array_t charstrings_subset_index; |
| 178 | cairo_array_t strings_subset_index; |
| 179 | int euro_sid; |
| 180 | int *fdselect_subset; |
| 181 | unsigned int num_subset_fontdicts; |
| 182 | int *fd_subset_map; |
| 183 | int *private_dict_offset; |
| 184 | cairo_bool_t subset_subroutines; |
| 185 | cairo_bool_t *global_subs_used; |
| 186 | cairo_bool_t *local_subs_used; |
| 187 | cairo_bool_t **fd_local_subs_used; |
| 188 | cairo_array_t output; |
| 189 | |
| 190 | /* Subset Metrics */ |
| 191 | int *widths; |
| 192 | int x_min, y_min, x_max, y_max; |
| 193 | int ascent, descent; |
| 194 | |
| 195 | /* Type 2 charstring data */ |
| 196 | int type2_stack_size; |
| 197 | int type2_stack_top_value; |
| 198 | cairo_bool_t type2_stack_top_is_int; |
| 199 | int type2_num_hints; |
| 200 | int type2_hintmask_bytes; |
| 201 | int type2_nesting_level; |
| 202 | cairo_bool_t type2_seen_first_int; |
| 203 | cairo_bool_t type2_find_width; |
| 204 | cairo_bool_t type2_found_width; |
| 205 | int type2_width; |
| 206 | cairo_bool_t type2_has_path; |
| 207 | |
| 208 | } cairo_cff_font_t; |
| 209 | |
| 210 | /* Encoded integer using maximum sized encoding. This is required for |
| 211 | * operands that are later modified after encoding. */ |
| 212 | static unsigned char * |
| 213 | encode_integer_max (unsigned char *p, int i) |
| 214 | { |
| 215 | *p++ = 29; |
| 216 | *p++ = i >> 24; |
| 217 | *p++ = (i >> 16) & 0xff; |
| 218 | *p++ = (i >> 8) & 0xff; |
| 219 | *p++ = i & 0xff; |
| 220 | return p; |
| 221 | } |
| 222 | |
| 223 | static unsigned char * |
| 224 | encode_integer (unsigned char *p, int i) |
| 225 | { |
| 226 | if (i >= -107 && i <= 107) { |
| 227 | *p++ = i + 139; |
| 228 | } else if (i >= 108 && i <= 1131) { |
| 229 | i -= 108; |
| 230 | *p++ = (i >> 8)+ 247; |
| 231 | *p++ = i & 0xff; |
| 232 | } else if (i >= -1131 && i <= -108) { |
| 233 | i = -i - 108; |
| 234 | *p++ = (i >> 8)+ 251; |
| 235 | *p++ = i & 0xff; |
| 236 | } else if (i >= -32768 && i <= 32767) { |
| 237 | *p++ = 28; |
| 238 | *p++ = (i >> 8) & 0xff; |
| 239 | *p++ = i & 0xff; |
| 240 | } else { |
| 241 | p = encode_integer_max (p, i); |
| 242 | } |
| 243 | return p; |
| 244 | } |
| 245 | |
| 246 | static unsigned char * |
| 247 | decode_integer (unsigned char *p, int *integer) |
| 248 | { |
| 249 | if (*p == 28) { |
| 250 | *integer = (int16_t)(p[1]<<8 | p[2]); |
| 251 | p += 3; |
| 252 | } else if (*p == 29) { |
| 253 | *integer = (int32_t)(((uint32_t)p[1] << 24) | (p[2] << 16) | (p[3] << 8) | p[4]); |
| 254 | p += 5; |
| 255 | } else if (*p >= 32 && *p <= 246) { |
| 256 | *integer = *p++ - 139; |
| 257 | } else if (*p <= 250) { |
| 258 | *integer = (p[0] - 247) * 256 + p[1] + 108; |
| 259 | p += 2; |
| 260 | } else if (*p <= 254) { |
| 261 | *integer = -(p[0] - 251) * 256 - p[1] - 108; |
| 262 | p += 2; |
| 263 | } else { |
| 264 | *integer = 0; |
| 265 | p += 1; |
| 266 | } |
| 267 | return p; |
| 268 | } |
| 269 | |
| 270 | static char * |
| 271 | decode_nibble (int n, char *buf) |
| 272 | { |
| 273 | switch (n) |
| 274 | { |
| 275 | case 0xa: |
| 276 | *buf++ = '.'; |
| 277 | break; |
| 278 | case 0xb: |
| 279 | *buf++ = 'E'; |
| 280 | break; |
| 281 | case 0xc: |
| 282 | *buf++ = 'E'; |
| 283 | *buf++ = '-'; |
| 284 | break; |
| 285 | case 0xd: |
| 286 | *buf++ = '-'; |
| 287 | break; |
| 288 | case 0xe: |
| 289 | *buf++ = '-'; |
| 290 | break; |
| 291 | case 0xf: |
| 292 | break; |
| 293 | default: |
| 294 | *buf++ = '0' + n; |
| 295 | break; |
| 296 | } |
| 297 | |
| 298 | return buf; |
| 299 | } |
| 300 | |
| 301 | static unsigned char * |
| 302 | decode_real (unsigned char *p, double *real) |
| 303 | { |
| 304 | char buffer[100]; |
| 305 | char *buf = buffer; |
| 306 | char *buf_end = buffer + sizeof (buffer); |
| 307 | char *end; |
| 308 | int n; |
| 309 | |
| 310 | p++; |
| 311 | while (buf + 2 < buf_end) { |
| 312 | n = *p >> 4; |
| 313 | buf = decode_nibble (n, buf); |
| 314 | n = *p & 0x0f; |
| 315 | buf = decode_nibble (n, buf); |
| 316 | if ((*p & 0x0f) == 0x0f) { |
| 317 | p++; |
| 318 | break; |
| 319 | } |
| 320 | p++; |
| 321 | }; |
| 322 | *buf = 0; |
| 323 | |
| 324 | *real = _cairo_strtod (buffer, &end); |
| 325 | |
| 326 | return p; |
| 327 | } |
| 328 | |
| 329 | static unsigned char * |
| 330 | decode_number (unsigned char *p, double *number) |
| 331 | { |
| 332 | if (*p == 30) { |
| 333 | p = decode_real (p, number); |
| 334 | } else { |
| 335 | int i; |
| 336 | p = decode_integer (p, &i); |
| 337 | *number = i; |
| 338 | } |
| 339 | return p; |
| 340 | } |
| 341 | |
| 342 | static unsigned char * |
| 343 | decode_operator (unsigned char *p, unsigned short *operator) |
| 344 | { |
| 345 | unsigned short op = 0; |
| 346 | |
| 347 | op = *p++; |
| 348 | if (op == 12) { |
| 349 | op <<= 8; |
| 350 | op |= *p++; |
| 351 | } |
| 352 | *operator = op; |
| 353 | return p; |
| 354 | } |
| 355 | |
| 356 | /* return 0 if not an operand */ |
| 357 | static int |
| 358 | operand_length (unsigned char *p) |
| 359 | { |
| 360 | unsigned char *begin = p; |
| 361 | |
| 362 | if (*p == 28) |
| 363 | return 3; |
| 364 | |
| 365 | if (*p == 29) |
| 366 | return 5; |
| 367 | |
| 368 | if (*p >= 32 && *p <= 246) |
| 369 | return 1; |
| 370 | |
| 371 | if (*p >= 247 && *p <= 254) |
| 372 | return 2; |
| 373 | |
| 374 | if (*p == 30) { |
| 375 | while ((*p & 0x0f) != 0x0f) |
| 376 | p++; |
| 377 | return p - begin + 1; |
| 378 | } |
| 379 | |
| 380 | return 0; |
| 381 | } |
| 382 | |
| 383 | static unsigned char * |
| 384 | encode_index_offset (unsigned char *p, int offset_size, unsigned long offset) |
| 385 | { |
| 386 | while (--offset_size >= 0) { |
| 387 | p[offset_size] = (unsigned char) (offset & 0xff); |
| 388 | offset >>= 8; |
| 389 | } |
| 390 | return p + offset_size; |
| 391 | } |
| 392 | |
| 393 | static size_t |
| 394 | decode_index_offset(unsigned char *p, int off_size) |
| 395 | { |
| 396 | unsigned long offset = 0; |
| 397 | |
| 398 | while (off_size-- > 0) |
| 399 | offset = offset*256 + *p++; |
| 400 | return offset; |
| 401 | } |
| 402 | |
| 403 | static void |
| 404 | cff_index_init (cairo_array_t *index) |
| 405 | { |
| 406 | _cairo_array_init (index, sizeof (cff_index_element_t)); |
| 407 | } |
| 408 | |
| 409 | static cairo_int_status_t |
| 410 | cff_index_read (cairo_array_t *index, unsigned char **ptr, unsigned char *end_ptr) |
| 411 | { |
| 412 | cff_index_element_t element; |
| 413 | unsigned char *data, *p; |
| 414 | cairo_status_t status; |
| 415 | int offset_size, count, i; |
| 416 | size_t start, end = 0; |
| 417 | |
| 418 | p = *ptr; |
| 419 | if (p + 2 > end_ptr) |
| 420 | return CAIRO_INT_STATUS_UNSUPPORTED; |
| 421 | count = get_unaligned_be16 (p); |
| 422 | p += 2; |
| 423 | if (count > 0) { |
| 424 | offset_size = *p++; |
| 425 | if (p + (count + 1)*offset_size > end_ptr || offset_size > 4) |
| 426 | return CAIRO_INT_STATUS_UNSUPPORTED; |
| 427 | data = p + offset_size*(count + 1) - 1; |
| 428 | start = decode_index_offset (p, offset_size); |
| 429 | p += offset_size; |
| 430 | for (i = 0; i < count; i++) { |
| 431 | end = decode_index_offset (p, offset_size); |
| 432 | p += offset_size; |
| 433 | if (p > end_ptr || end < start || data + end > end_ptr) |
| 434 | return CAIRO_INT_STATUS_UNSUPPORTED; |
| 435 | element.length = end - start; |
| 436 | element.is_copy = FALSE0; |
| 437 | element.data = data + start; |
| 438 | status = _cairo_array_append (index, &element); |
| 439 | if (unlikely (status)(__builtin_expect (!!(status), 0))) |
| 440 | return status; |
| 441 | start = end; |
| 442 | } |
| 443 | p = data + end; |
| 444 | } |
| 445 | *ptr = p; |
| 446 | |
| 447 | return CAIRO_STATUS_SUCCESS; |
| 448 | } |
| 449 | |
| 450 | static cairo_status_t |
| 451 | cff_index_write (cairo_array_t *index, cairo_array_t *output) |
| 452 | { |
| 453 | int offset_size; |
| 454 | int offset; |
| 455 | int num_elem; |
| 456 | int i; |
| 457 | cff_index_element_t *element; |
| 458 | uint16_t count; |
| 459 | unsigned char buf[5]; |
| 460 | cairo_status_t status; |
| 461 | |
| 462 | num_elem = _cairo_array_num_elements (index); |
| 463 | count = cpu_to_be16 ((uint16_t) num_elem); |
| 464 | status = _cairo_array_append_multiple (output, &count, 2); |
| 465 | if (unlikely (status)(__builtin_expect (!!(status), 0))) |
| 466 | return status; |
| 467 | |
| 468 | if (num_elem == 0) |
| 469 | return CAIRO_STATUS_SUCCESS; |
| 470 | |
| 471 | /* Find maximum offset to determine offset size */ |
| 472 | offset = 1; |
| 473 | for (i = 0; i < num_elem; i++) { |
| 474 | element = _cairo_array_index (index, i); |
| 475 | offset += element->length; |
| 476 | } |
| 477 | if (offset < 0x100) |
| 478 | offset_size = 1; |
| 479 | else if (offset < 0x10000) |
| 480 | offset_size = 2; |
| 481 | else if (offset < 0x1000000) |
| 482 | offset_size = 3; |
| 483 | else |
| 484 | offset_size = 4; |
| 485 | |
| 486 | buf[0] = (unsigned char) offset_size; |
| 487 | status = _cairo_array_append (output, buf); |
| 488 | if (unlikely (status)(__builtin_expect (!!(status), 0))) |
| 489 | return status; |
| 490 | |
| 491 | offset = 1; |
| 492 | encode_index_offset (buf, offset_size, offset); |
| 493 | status = _cairo_array_append_multiple (output, buf, offset_size); |
| 494 | if (unlikely (status)(__builtin_expect (!!(status), 0))) |
| 495 | return status; |
| 496 | |
| 497 | for (i = 0; i < num_elem; i++) { |
| 498 | element = _cairo_array_index (index, i); |
| 499 | offset += element->length; |
| 500 | encode_index_offset (buf, offset_size, offset); |
| 501 | status = _cairo_array_append_multiple (output, buf, offset_size); |
| 502 | if (unlikely (status)(__builtin_expect (!!(status), 0))) |
| 503 | return status; |
| 504 | } |
| 505 | |
| 506 | for (i = 0; i < num_elem; i++) { |
| 507 | element = _cairo_array_index (index, i); |
| 508 | if (element->length > 0) { |
| 509 | status = _cairo_array_append_multiple (output, |
| 510 | element->data, |
| 511 | element->length); |
| 512 | } |
| 513 | if (unlikely (status)(__builtin_expect (!!(status), 0))) |
| 514 | return status; |
| 515 | } |
| 516 | return CAIRO_STATUS_SUCCESS; |
| 517 | } |
| 518 | |
| 519 | static void |
| 520 | cff_index_set_object (cairo_array_t *index, int obj_index, |
| 521 | unsigned char *object , int length) |
| 522 | { |
| 523 | cff_index_element_t *element; |
| 524 | |
| 525 | element = _cairo_array_index (index, obj_index); |
| 526 | if (element->is_copy) |
| 527 | free (element->data); |
| 528 | |
| 529 | element->data = object; |
| 530 | element->length = length; |
| 531 | element->is_copy = FALSE0; |
| 532 | } |
| 533 | |
| 534 | static cairo_status_t |
| 535 | cff_index_append (cairo_array_t *index, unsigned char *object , int length) |
| 536 | { |
| 537 | cff_index_element_t element; |
| 538 | |
| 539 | element.length = length; |
| 540 | element.is_copy = FALSE0; |
| 541 | element.data = object; |
| 542 | |
| 543 | return _cairo_array_append (index, &element); |
| 544 | } |
| 545 | |
| 546 | static cairo_status_t |
| 547 | cff_index_append_copy (cairo_array_t *index, |
| 548 | const unsigned char *object, |
| 549 | unsigned int length) |
| 550 | { |
| 551 | cff_index_element_t element; |
| 552 | cairo_status_t status; |
| 553 | |
| 554 | element.length = length; |
| 555 | element.is_copy = TRUE1; |
| 556 | element.data = _cairo_malloc (element.length)((element.length) != 0 ? malloc(element.length) : ((void*)0)); |
| 557 | if (unlikely (element.data == NULL && length != 0)(__builtin_expect (!!(element.data == ((void*)0) && length != 0), 0))) |
| 558 | return _cairo_error (CAIRO_STATUS_NO_MEMORY); |
| 559 | |
| 560 | memcpy (element.data, object, element.length); |
| 561 | |
| 562 | status = _cairo_array_append (index, &element); |
| 563 | if (unlikely (status)(__builtin_expect (!!(status), 0))) { |
| 564 | free (element.data); |
| 565 | return status; |
| 566 | } |
| 567 | |
| 568 | return CAIRO_STATUS_SUCCESS; |
| 569 | } |
| 570 | |
| 571 | static void |
| 572 | cff_index_fini (cairo_array_t *index) |
| 573 | { |
| 574 | cff_index_element_t *element; |
| 575 | unsigned int i; |
| 576 | |
| 577 | for (i = 0; i < _cairo_array_num_elements (index); i++) { |
| 578 | element = _cairo_array_index (index, i); |
| 579 | if (element->is_copy && element->data) |
| 580 | free (element->data); |
| 581 | } |
| 582 | _cairo_array_fini (index); |
| 583 | } |
| 584 | |
| 585 | static cairo_bool_t |
| 586 | _cairo_cff_dict_equal (const void *key_a, const void *key_b) |
| 587 | { |
| 588 | const cff_dict_operator_t *op_a = key_a; |
| 589 | const cff_dict_operator_t *op_b = key_b; |
| 590 | |
| 591 | return op_a->operator == op_b->operator; |
| 592 | } |
| 593 | |
| 594 | static cairo_status_t |
| 595 | cff_dict_init (cairo_hash_table_t **dict) |
| 596 | { |
| 597 | *dict = _cairo_hash_table_create (_cairo_cff_dict_equal); |
| 598 | if (unlikely (*dict == NULL)(__builtin_expect (!!(*dict == ((void*)0)), 0))) |
| 599 | return _cairo_error (CAIRO_STATUS_NO_MEMORY); |
| 600 | |
| 601 | return CAIRO_STATUS_SUCCESS; |
| 602 | } |
| 603 | |
| 604 | static void |
| 605 | _cairo_dict_init_key (cff_dict_operator_t *key, int operator) |
| 606 | { |
| 607 | key->base.hash = (unsigned long) operator; |
| 608 | key->operator = operator; |
| 609 | } |
| 610 | |
| 611 | static cairo_status_t |
| 612 | cff_dict_create_operator (int operator, |
| 613 | unsigned char *operand, |
| 614 | int size, |
| 615 | cff_dict_operator_t **out) |
| 616 | { |
| 617 | cff_dict_operator_t *op; |
| 618 | |
| 619 | op = _cairo_malloc (sizeof (cff_dict_operator_t))((sizeof (cff_dict_operator_t)) != 0 ? malloc(sizeof (cff_dict_operator_t )) : ((void*)0)); |
| 620 | if (unlikely (op == NULL)(__builtin_expect (!!(op == ((void*)0)), 0))) |
| 621 | return _cairo_error (CAIRO_STATUS_NO_MEMORY); |
| 622 | |
| 623 | _cairo_dict_init_key (op, operator); |
| 624 | if (size != 0) { |
| 625 | op->operand = _cairo_malloc (size)((size) != 0 ? malloc(size) : ((void*)0)); |
| 626 | if (unlikely (op->operand == NULL)(__builtin_expect (!!(op->operand == ((void*)0)), 0))) { |
| 627 | free (op); |
| 628 | return _cairo_error (CAIRO_STATUS_NO_MEMORY); |
| 629 | } |
| 630 | memcpy (op->operand, operand, size); |
| 631 | } else { |
| 632 | op->operand = NULL((void*)0); |
| 633 | /* Delta-encoded arrays can be empty. */ |
| 634 | if (operator != BLUEVALUES_OP0x0006 && |
| 635 | operator != OTHERBLUES_OP0x0007 && |
| 636 | operator != FAMILYBLUES_OP0x0008 && |
| 637 | operator != FAMILYOTHERBLUES_OP0x0009 && |
| 638 | operator != STEMSNAPH_OP0x0c0c && |
| 639 | operator != STEMSNAPV_OP0x0c0d) { |
| 640 | free (op); |
| 641 | return _cairo_error (CAIRO_STATUS_NO_MEMORY); |
| 642 | } |
| 643 | } |
| 644 | |
| 645 | op->operand_length = size; |
| 646 | op->operand_offset = -1; |
| 647 | |
| 648 | *out = op; |
| 649 | return CAIRO_STATUS_SUCCESS; |
| 650 | } |
| 651 | |
| 652 | static cairo_status_t |
| 653 | cff_dict_read (cairo_hash_table_t *dict, unsigned char *p, int dict_size) |
| 654 | { |
| 655 | unsigned char *end; |
| 656 | cairo_array_t operands; |
| 657 | cff_dict_operator_t *op; |
| 658 | unsigned short operator; |
| 659 | cairo_status_t status = CAIRO_STATUS_SUCCESS; |
| 660 | int size; |
| 661 | |
| 662 | end = p + dict_size; |
| 663 | _cairo_array_init (&operands, 1); |
| 664 | while (p < end) { |
| 665 | size = operand_length (p); |
| 666 | if (size != 0) { |
| 667 | status = _cairo_array_append_multiple (&operands, p, size); |
| 668 | if (unlikely (status)(__builtin_expect (!!(status), 0))) |
| 669 | goto fail; |
| 670 | |
| 671 | p += size; |
| 672 | } else { |
| 673 | p = decode_operator (p, &operator); |
| 674 | status = cff_dict_create_operator (operator, |
| 675 | _cairo_array_index (&operands, 0), |
| 676 | _cairo_array_num_elements (&operands), |
| 677 | &op); |
| 678 | if (unlikely (status)(__builtin_expect (!!(status), 0))) |
| 679 | goto fail; |
| 680 | |
| 681 | status = _cairo_hash_table_insert (dict, &op->base); |
| 682 | if (unlikely (status)(__builtin_expect (!!(status), 0))) |
| 683 | goto fail; |
| 684 | |
| 685 | _cairo_array_truncate (&operands, 0); |
| 686 | } |
| 687 | } |
| 688 | |
| 689 | fail: |
| 690 | _cairo_array_fini (&operands); |
| 691 | |
| 692 | return status; |
| 693 | } |
| 694 | |
| 695 | static void |
| 696 | cff_dict_remove (cairo_hash_table_t *dict, unsigned short operator) |
| 697 | { |
| 698 | cff_dict_operator_t key, *op; |
| 699 | |
| 700 | _cairo_dict_init_key (&key, operator); |
| 701 | op = _cairo_hash_table_lookup (dict, &key.base); |
| 702 | if (op != NULL((void*)0)) { |
| 703 | free (op->operand); |
| 704 | _cairo_hash_table_remove (dict, (cairo_hash_entry_t *) op); |
| 705 | free (op); |
| 706 | } |
| 707 | } |
| 708 | |
| 709 | static unsigned char * |
| 710 | cff_dict_get_operands (cairo_hash_table_t *dict, |
| 711 | unsigned short operator, |
| 712 | int *size) |
| 713 | { |
| 714 | cff_dict_operator_t key, *op; |
| 715 | |
| 716 | _cairo_dict_init_key (&key, operator); |
| 717 | op = _cairo_hash_table_lookup (dict, &key.base); |
| 718 | if (op != NULL((void*)0)) { |
| 719 | *size = op->operand_length; |
| 720 | return op->operand; |
| 721 | } |
| 722 | |
| 723 | return NULL((void*)0); |
| 724 | } |
| 725 | |
| 726 | static cairo_status_t |
| 727 | cff_dict_set_operands (cairo_hash_table_t *dict, |
| 728 | unsigned short operator, |
| 729 | unsigned char *operand, |
| 730 | int size) |
| 731 | { |
| 732 | cff_dict_operator_t key, *op; |
| 733 | cairo_status_t status; |
| 734 | |
| 735 | _cairo_dict_init_key (&key, operator); |
| 736 | op = _cairo_hash_table_lookup (dict, &key.base); |
| 737 | if (op != NULL((void*)0)) { |
| 738 | free (op->operand); |
| 739 | op->operand = _cairo_malloc (size)((size) != 0 ? malloc(size) : ((void*)0)); |
| 740 | if (unlikely (op->operand == NULL)(__builtin_expect (!!(op->operand == ((void*)0)), 0))) |
| 741 | return _cairo_error (CAIRO_STATUS_NO_MEMORY); |
| 742 | |
| 743 | memcpy (op->operand, operand, size); |
| 744 | op->operand_length = size; |
| 745 | } |
| 746 | else |
| 747 | { |
| 748 | status = cff_dict_create_operator (operator, operand, size, &op); |
| 749 | if (unlikely (status)(__builtin_expect (!!(status), 0))) |
| 750 | return status; |
| 751 | |
| 752 | status = _cairo_hash_table_insert (dict, &op->base); |
| 753 | if (unlikely (status)(__builtin_expect (!!(status), 0))) |
| 754 | return status; |
| 755 | } |
| 756 | |
| 757 | return CAIRO_STATUS_SUCCESS; |
| 758 | } |
| 759 | |
| 760 | static int |
| 761 | cff_dict_get_location (cairo_hash_table_t *dict, |
| 762 | unsigned short operator, |
| 763 | int *size) |
| 764 | { |
| 765 | cff_dict_operator_t key, *op; |
| 766 | |
| 767 | _cairo_dict_init_key (&key, operator); |
| 768 | op = _cairo_hash_table_lookup (dict, &key.base); |
| 769 | if (op != NULL((void*)0)) { |
| 770 | *size = op->operand_length; |
| 771 | return op->operand_offset; |
| 772 | } |
| 773 | |
| 774 | return -1; |
| 775 | } |
| 776 | |
| 777 | typedef struct _dict_write_info { |
| 778 | cairo_array_t *output; |
| 779 | cairo_status_t status; |
| 780 | } dict_write_info_t; |
| 781 | |
| 782 | static void |
| 783 | cairo_dict_write_operator (cff_dict_operator_t *op, dict_write_info_t *write_info) |
| 784 | { |
| 785 | unsigned char data; |
| 786 | |
| 787 | op->operand_offset = _cairo_array_num_elements (write_info->output); |
| 788 | write_info->status = _cairo_array_append_multiple (write_info->output, op->operand, op->operand_length); |
| 789 | if (write_info->status) |
| 790 | return; |
| 791 | |
| 792 | if (op->operator & 0xff00) { |
| 793 | data = op->operator >> 8; |
| 794 | write_info->status = _cairo_array_append (write_info->output, &data); |
| 795 | if (write_info->status) |
| 796 | return; |
| 797 | } |
| 798 | data = op->operator & 0xff; |
| 799 | write_info->status = _cairo_array_append (write_info->output, &data); |
| 800 | } |
| 801 | |
| 802 | static void |
| 803 | _cairo_dict_collect (void *entry, void *closure) |
| 804 | { |
| 805 | dict_write_info_t *write_info = closure; |
| 806 | cff_dict_operator_t *op = entry; |
| 807 | |
| 808 | if (write_info->status) |
| 809 | return; |
| 810 | |
| 811 | /* The ROS operator is handled separately in cff_dict_write() */ |
| 812 | if (op->operator != ROS_OP0x0c1e) |
| 813 | cairo_dict_write_operator (op, write_info); |
| 814 | } |
| 815 | |
| 816 | static cairo_status_t |
| 817 | cff_dict_write (cairo_hash_table_t *dict, cairo_array_t *output) |
| 818 | { |
| 819 | dict_write_info_t write_info; |
| 820 | cff_dict_operator_t key, *op; |
| 821 | |
| 822 | write_info.output = output; |
| 823 | write_info.status = CAIRO_STATUS_SUCCESS; |
| 824 | |
| 825 | /* The CFF specification requires that the Top Dict of CID fonts |
| 826 | * begin with the ROS operator. */ |
| 827 | _cairo_dict_init_key (&key, ROS_OP0x0c1e); |
| 828 | op = _cairo_hash_table_lookup (dict, &key.base); |
| 829 | if (op != NULL((void*)0)) |
| 830 | cairo_dict_write_operator (op, &write_info); |
| 831 | |
| 832 | _cairo_hash_table_foreach (dict, _cairo_dict_collect, &write_info); |
| 833 | |
| 834 | return write_info.status; |
| 835 | } |
| 836 | |
| 837 | static void |
| 838 | _cff_dict_entry_pluck (void *_entry, void *dict) |
| 839 | { |
| 840 | cff_dict_operator_t *entry = _entry; |
| 841 | |
| 842 | _cairo_hash_table_remove (dict, &entry->base); |
| 843 | free (entry->operand); |
| 844 | free (entry); |
| 845 | } |
| 846 | |
| 847 | static void |
| 848 | cff_dict_fini (cairo_hash_table_t *dict) |
| 849 | { |
| 850 | _cairo_hash_table_foreach (dict, _cff_dict_entry_pluck, dict); |
| 851 | _cairo_hash_table_destroy (dict); |
| 852 | } |
| 853 | |
| 854 | static cairo_int_status_t |
| 855 | cairo_cff_font_read_header (cairo_cff_font_t *font) |
| 856 | { |
| 857 | if (font->data_length < sizeof (cff_header_t)) |
| 858 | return CAIRO_INT_STATUS_UNSUPPORTED; |
| 859 | |
| 860 | |
| 861 | font->header = (cff_header_t *) font->data; |
| 862 | font->current_ptr = font->data + font->header->header_size; |
| 863 | |
| 864 | return CAIRO_STATUS_SUCCESS; |
| 865 | } |
| 866 | |
| 867 | static cairo_int_status_t |
| 868 | cairo_cff_font_read_name (cairo_cff_font_t *font) |
| 869 | { |
| 870 | cairo_array_t index; |
| 871 | cairo_int_status_t status; |
| 872 | cff_index_element_t *element; |
| 873 | unsigned char *p; |
| 874 | int i, len; |
| 875 | |
| 876 | cff_index_init (&index); |
| 877 | status = cff_index_read (&index, &font->current_ptr, font->data_end); |
| 878 | if (status == CAIRO_INT_STATUS_SUCCESS && !font->is_opentype) { |
| 879 | element = _cairo_array_index (&index, 0); |
| 880 | p = element->data; |
| 881 | len = element->length; |
| 882 | |
| 883 | /* If font name is prefixed with a subset tag, strip it off. */ |
| 884 | if (len > 7 && p[6] == '+') { |
| 885 | for (i = 0; i < 6; i++) |
| 886 | if (p[i] < 'A' || p[i] > 'Z') |
| 887 | break; |
| 888 | if (i == 6) { |
| 889 | p += 7; |
| 890 | len -= 7; |
| 891 | } |
| 892 | } |
| 893 | |
| 894 | font->ps_name = _cairo_strndupstrndup ((char*)p, len); |
| 895 | if (unlikely (font->ps_name == NULL)(__builtin_expect (!!(font->ps_name == ((void*)0)), 0))) |
| 896 | return _cairo_error (CAIRO_STATUS_NO_MEMORY); |
| 897 | |
| 898 | status = _cairo_escape_ps_name (&font->ps_name); |
| 899 | } |
| 900 | cff_index_fini (&index); |
| 901 | |
| 902 | return status; |
| 903 | } |
| 904 | |
| 905 | static cairo_int_status_t |
| 906 | cairo_cff_font_read_private_dict (cairo_cff_font_t *font, |
| 907 | cairo_hash_table_t *private_dict, |
| 908 | cairo_array_t *local_sub_index, |
| 909 | int *local_sub_bias, |
| 910 | cairo_bool_t **local_subs_used, |
| 911 | double *default_width, |
| 912 | double *nominal_width, |
| 913 | unsigned char *ptr, |
| 914 | int size) |
| 915 | { |
| 916 | cairo_int_status_t status; |
| 917 | unsigned char buf[10]; |
| 918 | unsigned char *end_buf; |
| 919 | int offset; |
| 920 | int i; |
| 921 | unsigned char *operand; |
| 922 | unsigned char *p; |
| 923 | int num_subs; |
| 924 | |
| 925 | status = cff_dict_read (private_dict, ptr, size); |
| 926 | if (unlikely (status)(__builtin_expect (!!(status), 0))) |
| 927 | return status; |
| 928 | |
| 929 | operand = cff_dict_get_operands (private_dict, LOCAL_SUB_OP0x0013, &i); |
| 930 | if (operand) { |
| 931 | decode_integer (operand, &offset); |
| 932 | p = ptr + offset; |
| 933 | status = cff_index_read (local_sub_index, &p, font->data_end); |
| 934 | if (unlikely (status)(__builtin_expect (!!(status), 0))) |
| 935 | return status; |
| 936 | |
| 937 | /* Use maximum sized encoding to reserve space for later modification. */ |
| 938 | end_buf = encode_integer_max (buf, 0); |
| 939 | status = cff_dict_set_operands (private_dict, LOCAL_SUB_OP0x0013, buf, end_buf - buf); |
| 940 | if (unlikely (status)(__builtin_expect (!!(status), 0))) |
| 941 | return status; |
| 942 | } |
| 943 | |
| 944 | *default_width = 0; |
| 945 | operand = cff_dict_get_operands (private_dict, DEFAULTWIDTH_OP0x0014, &i); |
| 946 | if (operand) |
| 947 | decode_number (operand, default_width); |
| 948 | |
| 949 | *nominal_width = 0; |
| 950 | operand = cff_dict_get_operands (private_dict, NOMINALWIDTH_OP0x0015, &i); |
| 951 | if (operand) |
| 952 | decode_number (operand, nominal_width); |
| 953 | |
| 954 | num_subs = _cairo_array_num_elements (local_sub_index); |
| 955 | *local_subs_used = calloc (num_subs, sizeof (cairo_bool_t)); |
| 956 | if (unlikely (*local_subs_used == NULL)(__builtin_expect (!!(*local_subs_used == ((void*)0)), 0))) |
| 957 | return _cairo_error (CAIRO_STATUS_NO_MEMORY); |
| 958 | |
| 959 | if (num_subs < 1240) |
| 960 | *local_sub_bias = 107; |
| 961 | else if (num_subs < 33900) |
| 962 | *local_sub_bias = 1131; |
| 963 | else |
| 964 | *local_sub_bias = 32768; |
| 965 | |
| 966 | return CAIRO_STATUS_SUCCESS; |
| 967 | } |
| 968 | |
| 969 | static cairo_int_status_t |
| 970 | cairo_cff_font_read_fdselect (cairo_cff_font_t *font, unsigned char *p) |
| 971 | { |
| 972 | int type, num_ranges, first, last, fd, i, j; |
| 973 | |
| 974 | font->fdselect = calloc (font->num_glyphs, sizeof (int)); |
| 975 | if (unlikely (font->fdselect == NULL)(__builtin_expect (!!(font->fdselect == ((void*)0)), 0))) |
| 976 | return _cairo_error (CAIRO_STATUS_NO_MEMORY); |
| 977 | |
| 978 | type = *p++; |
| 979 | if (type == 0) |
| 980 | { |
| 981 | for (i = 0; i < font->num_glyphs; i++) |
| 982 | font->fdselect[i] = *p++; |
| 983 | } else if (type == 3) { |
| 984 | num_ranges = get_unaligned_be16 (p); |
| 985 | p += 2; |
| 986 | for (i = 0; i < num_ranges; i++) |
| 987 | { |
| 988 | first = get_unaligned_be16 (p); |
| 989 | p += 2; |
| 990 | fd = *p++; |
| 991 | last = get_unaligned_be16 (p); |
| 992 | if (last > font->num_glyphs) |
| 993 | return CAIRO_INT_STATUS_UNSUPPORTED; |
| 994 | for (j = first; j < last; j++) |
| 995 | font->fdselect[j] = fd; |
| 996 | } |
| 997 | } else { |
| 998 | return CAIRO_INT_STATUS_UNSUPPORTED; |
| 999 | } |
| 1000 | |
| 1001 | return CAIRO_STATUS_SUCCESS; |
| 1002 | } |
| 1003 | |
| 1004 | static cairo_int_status_t |
| 1005 | cairo_cff_font_read_cid_fontdict (cairo_cff_font_t *font, unsigned char *ptr) |
| 1006 | { |
| 1007 | cairo_array_t index; |
| 1008 | cff_index_element_t *element; |
| 1009 | unsigned int i; |
| 1010 | int size; |
| 1011 | unsigned char *operand; |
| 1012 | int offset; |
| 1013 | cairo_int_status_t status; |
| 1014 | unsigned char buf[100]; |
| 1015 | unsigned char *end_buf; |
| 1016 | |
| 1017 | cff_index_init (&index); |
| 1018 | status = cff_index_read (&index, &ptr, font->data_end); |
| 1019 | if (unlikely (status)(__builtin_expect (!!(status), 0))) |
| 1020 | goto fail; |
| 1021 | |
| 1022 | font->num_fontdicts = _cairo_array_num_elements (&index); |
| 1023 | |
| 1024 | font->fd_dict = calloc (sizeof (cairo_hash_table_t *), font->num_fontdicts); |
| 1025 | if (unlikely (font->fd_dict == NULL)(__builtin_expect (!!(font->fd_dict == ((void*)0)), 0))) { |
| 1026 | status = _cairo_error (CAIRO_STATUS_NO_MEMORY); |
| 1027 | goto fail; |
| 1028 | } |
| 1029 | |
| 1030 | font->fd_private_dict = calloc (sizeof (cairo_hash_table_t *), font->num_fontdicts); |
| 1031 | if (unlikely (font->fd_private_dict == NULL)(__builtin_expect (!!(font->fd_private_dict == ((void*)0)) , 0))) { |
| 1032 | status = _cairo_error (CAIRO_STATUS_NO_MEMORY); |
| 1033 | goto fail; |
| 1034 | } |
| 1035 | |
| 1036 | font->fd_local_sub_index = calloc (sizeof (cairo_array_t), font->num_fontdicts); |
| 1037 | if (unlikely (font->fd_local_sub_index == NULL)(__builtin_expect (!!(font->fd_local_sub_index == ((void*) 0)), 0))) { |
| 1038 | status = _cairo_error (CAIRO_STATUS_NO_MEMORY); |
| 1039 | goto fail; |
| 1040 | } |
| 1041 | |
| 1042 | font->fd_local_sub_bias = calloc (sizeof (int), font->num_fontdicts); |
| 1043 | if (unlikely (font->fd_local_sub_bias == NULL)(__builtin_expect (!!(font->fd_local_sub_bias == ((void*)0 )), 0))) { |
| 1044 | status = _cairo_error (CAIRO_STATUS_NO_MEMORY); |
| 1045 | goto fail; |
| 1046 | } |
| 1047 | |
| 1048 | font->fd_local_subs_used = calloc (sizeof (cairo_bool_t *), font->num_fontdicts); |
| 1049 | if (unlikely (font->fd_local_subs_used == NULL)(__builtin_expect (!!(font->fd_local_subs_used == ((void*) 0)), 0))) { |
| 1050 | status = _cairo_error (CAIRO_STATUS_NO_MEMORY); |
| 1051 | goto fail; |
| 1052 | } |
| 1053 | |
| 1054 | font->fd_default_width = calloc (font->num_fontdicts, sizeof (double)); |
| 1055 | if (unlikely (font->fd_default_width == NULL)(__builtin_expect (!!(font->fd_default_width == ((void*)0) ), 0))) { |
| 1056 | status = _cairo_error (CAIRO_STATUS_NO_MEMORY); |
| 1057 | goto fail; |
| 1058 | } |
| 1059 | |
| 1060 | font->fd_nominal_width = calloc (font->num_fontdicts, sizeof (double)); |
| 1061 | if (unlikely (font->fd_nominal_width == NULL)(__builtin_expect (!!(font->fd_nominal_width == ((void*)0) ), 0))) { |
| 1062 | status = _cairo_error (CAIRO_STATUS_NO_MEMORY); |
| 1063 | goto fail; |
| 1064 | } |
| 1065 | |
| 1066 | for (i = 0; i < font->num_fontdicts; i++) { |
| 1067 | status = cff_dict_init (&font->fd_dict[i]); |
| 1068 | if (unlikely (status)(__builtin_expect (!!(status), 0))) |
| 1069 | goto fail; |
| 1070 | |
| 1071 | element = _cairo_array_index (&index, i); |
| 1072 | status = cff_dict_read (font->fd_dict[i], element->data, element->length); |
| 1073 | if (unlikely (status)(__builtin_expect (!!(status), 0))) |
| 1074 | goto fail; |
| 1075 | |
| 1076 | operand = cff_dict_get_operands (font->fd_dict[i], PRIVATE_OP0x0012, &size); |
| 1077 | if (operand == NULL((void*)0)) { |
| 1078 | status = CAIRO_INT_STATUS_UNSUPPORTED; |
| 1079 | goto fail; |
| 1080 | } |
| 1081 | operand = decode_integer (operand, &size); |
| 1082 | decode_integer (operand, &offset); |
| 1083 | status = cff_dict_init (&font->fd_private_dict[i]); |
| 1084 | if (unlikely (status)(__builtin_expect (!!(status), 0))) |
| 1085 | goto fail; |
| 1086 | |
| 1087 | cff_index_init (&font->fd_local_sub_index[i]); |
| 1088 | status = cairo_cff_font_read_private_dict (font, |
| 1089 | font->fd_private_dict[i], |
| 1090 | &font->fd_local_sub_index[i], |
| 1091 | &font->fd_local_sub_bias[i], |
| 1092 | &font->fd_local_subs_used[i], |
| 1093 | &font->fd_default_width[i], |
| 1094 | &font->fd_nominal_width[i], |
| 1095 | font->data + offset, |
| 1096 | size); |
| 1097 | if (unlikely (status)(__builtin_expect (!!(status), 0))) |
| 1098 | goto fail; |
| 1099 | |
| 1100 | /* Set integer operand to max value to use max size encoding to reserve |
| 1101 | * space for any value later */ |
| 1102 | end_buf = encode_integer_max (buf, 0); |
| 1103 | end_buf = encode_integer_max (end_buf, 0); |
| 1104 | status = cff_dict_set_operands (font->fd_dict[i], PRIVATE_OP0x0012, buf, end_buf - buf); |
| 1105 | if (unlikely (status)(__builtin_expect (!!(status), 0))) |
| 1106 | goto fail; |
| 1107 | } |
| 1108 | |
| 1109 | status = CAIRO_STATUS_SUCCESS; |
| 1110 | |
| 1111 | fail: |
| 1112 | cff_index_fini (&index); |
| 1113 | |
| 1114 | return status; |
| 1115 | } |
| 1116 | |
| 1117 | static void |
| 1118 | cairo_cff_font_read_font_metrics (cairo_cff_font_t *font, cairo_hash_table_t *top_dict) |
| 1119 | { |
| 1120 | unsigned char *p; |
| 1121 | unsigned char *end; |
| 1122 | int size; |
| 1123 | double x_min, y_min, x_max, y_max; |
| 1124 | double xx, yx, xy, yy; |
| 1125 | |
| 1126 | x_min = 0.0; |
| 1127 | y_min = 0.0; |
| 1128 | x_max = 0.0; |
| 1129 | y_max = 0.0; |
| 1130 | p = cff_dict_get_operands (font->top_dict, FONTBBOX_OP0x0005, &size); |
| 1131 | if (p) { |
| 1132 | end = p + size; |
| 1133 | if (p < end) |
| 1134 | p = decode_number (p, &x_min); |
| 1135 | if (p < end) |
| 1136 | p = decode_number (p, &y_min); |
| 1137 | if (p < end) |
| 1138 | p = decode_number (p, &x_max); |
| 1139 | if (p < end) |
| 1140 | p = decode_number (p, &y_max); |
Value stored to 'p' is never read | |
| 1141 | } |
| 1142 | font->x_min = floor (x_min); |
| 1143 | font->y_min = floor (y_min); |
| 1144 | font->x_max = floor (x_max); |
| 1145 | font->y_max = floor (y_max); |
| 1146 | font->ascent = font->y_max; |
| 1147 | font->descent = font->y_min; |
| 1148 | |
| 1149 | xx = 0.001; |
| 1150 | yx = 0.0; |
| 1151 | xy = 0.0; |
| 1152 | yy = 0.001; |
| 1153 | p = cff_dict_get_operands (font->top_dict, FONTMATRIX_OP0x0c07, &size); |
| 1154 | if (p) { |
| 1155 | end = p + size; |
| 1156 | if (p < end) |
| 1157 | p = decode_number (p, &xx); |
| 1158 | if (p < end) |
| 1159 | p = decode_number (p, &yx); |
| 1160 | if (p < end) |
| 1161 | p = decode_number (p, &xy); |
| 1162 | if (p < end) |
| 1163 | p = decode_number (p, &yy); |
| 1164 | } |
| 1165 | /* FreeType uses 1/abs(yy) to get units per EM */ |
| 1166 | font->units_per_em = _cairo_round(1.0/fabs(yy)); |
| 1167 | } |
| 1168 | |
| 1169 | static cairo_int_status_t |
| 1170 | cairo_cff_font_read_top_dict (cairo_cff_font_t *font) |
| 1171 | { |
| 1172 | cairo_array_t index; |
| 1173 | cff_index_element_t *element; |
| 1174 | unsigned char buf[20]; |
| 1175 | unsigned char *end_buf; |
| 1176 | unsigned char *operand; |
| 1177 | cairo_int_status_t status; |
| 1178 | unsigned char *p; |
| 1179 | int size; |
| 1180 | int offset; |
| 1181 | |
| 1182 | cff_index_init (&index); |
| 1183 | status = cff_index_read (&index, &font->current_ptr, font->data_end); |
| 1184 | if (unlikely (status)(__builtin_expect (!!(status), 0))) |
| 1185 | goto fail; |
| 1186 | |
| 1187 | element = _cairo_array_index (&index, 0); |
| 1188 | if (element == NULL((void*)0)) |
| 1189 | return CAIRO_STATUS_NO_MEMORY; |
| 1190 | status = cff_dict_read (font->top_dict, element->data, element->length); |
| 1191 | if (unlikely (status)(__builtin_expect (!!(status), 0))) |
| 1192 | goto fail; |
| 1193 | |
| 1194 | if (cff_dict_get_operands (font->top_dict, ROS_OP0x0c1e, &size) != NULL((void*)0)) |
| 1195 | font->is_cid = TRUE1; |
| 1196 | else |
| 1197 | font->is_cid = FALSE0; |
| 1198 | |
| 1199 | operand = cff_dict_get_operands (font->top_dict, CHARSTRINGS_OP0x0011, &size); |
| 1200 | decode_integer (operand, &offset); |
| 1201 | p = font->data + offset; |
| 1202 | status = cff_index_read (&font->charstrings_index, &p, font->data_end); |
| 1203 | if (unlikely (status)(__builtin_expect (!!(status), 0))) |
| 1204 | goto fail; |
| 1205 | font->num_glyphs = _cairo_array_num_elements (&font->charstrings_index); |
| 1206 | |
| 1207 | if (font->is_cid) { |
| 1208 | operand = cff_dict_get_operands (font->top_dict, CHARSET_OP0x000f, &size); |
| 1209 | if (!operand) |
| 1210 | return CAIRO_INT_STATUS_UNSUPPORTED; |
| 1211 | |
| 1212 | decode_integer (operand, &offset); |
| 1213 | font->charset = font->data + offset; |
| 1214 | if (font->charset >= font->data_end) |
| 1215 | return CAIRO_INT_STATUS_UNSUPPORTED; |
| 1216 | } |
| 1217 | |
| 1218 | if (!font->is_opentype) |
| 1219 | cairo_cff_font_read_font_metrics (font, font->top_dict); |
| 1220 | |
| 1221 | if (font->is_cid) { |
| 1222 | operand = cff_dict_get_operands (font->top_dict, FDSELECT_OP0x0c25, &size); |
| 1223 | decode_integer (operand, &offset); |
| 1224 | status = cairo_cff_font_read_fdselect (font, font->data + offset); |
| 1225 | if (unlikely (status)(__builtin_expect (!!(status), 0))) |
| 1226 | goto fail; |
| 1227 | |
| 1228 | operand = cff_dict_get_operands (font->top_dict, FDARRAY_OP0x0c24, &size); |
| 1229 | decode_integer (operand, &offset); |
| 1230 | status = cairo_cff_font_read_cid_fontdict (font, font->data + offset); |
| 1231 | if (unlikely (status)(__builtin_expect (!!(status), 0))) |
| 1232 | goto fail; |
| 1233 | } else { |
| 1234 | operand = cff_dict_get_operands (font->top_dict, PRIVATE_OP0x0012, &size); |
| 1235 | operand = decode_integer (operand, &size); |
| 1236 | decode_integer (operand, &offset); |
| 1237 | status = cairo_cff_font_read_private_dict (font, |
| 1238 | font->private_dict, |
| 1239 | &font->local_sub_index, |
| 1240 | &font->local_sub_bias, |
| 1241 | &font->local_subs_used, |
| 1242 | &font->default_width, |
| 1243 | &font->nominal_width, |
| 1244 | font->data + offset, |
| 1245 | size); |
| 1246 | if (unlikely (status)(__builtin_expect (!!(status), 0))) |
| 1247 | goto fail; |
| 1248 | } |
| 1249 | |
| 1250 | /* Use maximum sized encoding to reserve space for later modification. */ |
| 1251 | end_buf = encode_integer_max (buf, 0); |
| 1252 | status = cff_dict_set_operands (font->top_dict, |
| 1253 | CHARSTRINGS_OP0x0011, buf, end_buf - buf); |
| 1254 | if (unlikely (status)(__builtin_expect (!!(status), 0))) |
| 1255 | goto fail; |
| 1256 | |
| 1257 | status = cff_dict_set_operands (font->top_dict, |
| 1258 | CHARSET_OP0x000f, buf, end_buf - buf); |
| 1259 | if (unlikely (status)(__builtin_expect (!!(status), 0))) |
| 1260 | goto fail; |
| 1261 | |
| 1262 | if (font->scaled_font_subset->is_latin) { |
| 1263 | status = cff_dict_set_operands (font->top_dict, |
| 1264 | ENCODING_OP0x0010, buf, end_buf - buf); |
| 1265 | if (unlikely (status)(__builtin_expect (!!(status), 0))) |
| 1266 | goto fail; |
| 1267 | |
| 1268 | /* Private has two operands - size and offset */ |
| 1269 | end_buf = encode_integer_max (end_buf, 0); |
| 1270 | cff_dict_set_operands (font->top_dict, PRIVATE_OP0x0012, buf, end_buf - buf); |
| 1271 | if (unlikely (status)(__builtin_expect (!!(status), 0))) |
| 1272 | goto fail; |
| 1273 | |
| 1274 | } else { |
| 1275 | status = cff_dict_set_operands (font->top_dict, |
| 1276 | FDSELECT_OP0x0c25, buf, end_buf - buf); |
| 1277 | if (unlikely (status)(__builtin_expect (!!(status), 0))) |
| 1278 | goto fail; |
| 1279 | |
| 1280 | status = cff_dict_set_operands (font->top_dict, |
| 1281 | FDARRAY_OP0x0c24, buf, end_buf - buf); |
| 1282 | if (unlikely (status)(__builtin_expect (!!(status), 0))) |
| 1283 | goto fail; |
| 1284 | |
| 1285 | cff_dict_remove (font->top_dict, ENCODING_OP0x0010); |
| 1286 | cff_dict_remove (font->top_dict, PRIVATE_OP0x0012); |
| 1287 | } |
| 1288 | |
| 1289 | /* Remove the unique identifier operators as the subsetted font is |
| 1290 | * not the same is the original font. */ |
| 1291 | cff_dict_remove (font->top_dict, UNIQUEID_OP0x000d); |
| 1292 | cff_dict_remove (font->top_dict, XUID_OP0x000e); |
| 1293 | |
| 1294 | fail: |
| 1295 | cff_index_fini (&index); |
| 1296 | |
| 1297 | return status; |
| 1298 | } |
| 1299 | |
| 1300 | static cairo_int_status_t |
| 1301 | cairo_cff_font_read_strings (cairo_cff_font_t *font) |
| 1302 | { |
| 1303 | return cff_index_read (&font->strings_index, &font->current_ptr, font->data_end); |
| 1304 | } |
| 1305 | |
| 1306 | static cairo_int_status_t |
| 1307 | cairo_cff_font_read_global_subroutines (cairo_cff_font_t *font) |
| 1308 | { |
| 1309 | cairo_int_status_t status; |
| 1310 | int num_subs; |
| 1311 | |
| 1312 | status = cff_index_read (&font->global_sub_index, &font->current_ptr, font->data_end); |
| 1313 | if (unlikely (status)(__builtin_expect (!!(status), 0))) |
| 1314 | return status; |
| 1315 | |
| 1316 | num_subs = _cairo_array_num_elements (&font->global_sub_index); |
| 1317 | font->global_subs_used = calloc (num_subs, sizeof(cairo_bool_t)); |
| 1318 | if (unlikely (font->global_subs_used == NULL)(__builtin_expect (!!(font->global_subs_used == ((void*)0) ), 0))) |
| 1319 | return _cairo_error (CAIRO_STATUS_NO_MEMORY); |
| 1320 | |
| 1321 | if (num_subs < 1240) |
| 1322 | font->global_sub_bias = 107; |
| 1323 | else if (num_subs < 33900) |
| 1324 | font->global_sub_bias = 1131; |
| 1325 | else |
| 1326 | font->global_sub_bias = 32768; |
| 1327 | |
| 1328 | return CAIRO_STATUS_SUCCESS; |
| 1329 | } |
| 1330 | |
| 1331 | typedef cairo_int_status_t |
| 1332 | (*font_read_t) (cairo_cff_font_t *font); |
| 1333 | |
| 1334 | static const font_read_t font_read_funcs[] = { |
| 1335 | cairo_cff_font_read_header, |
| 1336 | cairo_cff_font_read_name, |
| 1337 | cairo_cff_font_read_top_dict, |
| 1338 | cairo_cff_font_read_strings, |
| 1339 | cairo_cff_font_read_global_subroutines, |
| 1340 | }; |
| 1341 | |
| 1342 | static cairo_int_status_t |
| 1343 | cairo_cff_font_read_font (cairo_cff_font_t *font) |
| 1344 | { |
| 1345 | cairo_int_status_t status; |
| 1346 | unsigned int i; |
| 1347 | |
| 1348 | for (i = 0; i < ARRAY_LENGTH (font_read_funcs)((int) (sizeof (font_read_funcs) / sizeof (font_read_funcs[0] ))); i++) { |
| 1349 | status = font_read_funcs[i] (font); |
| 1350 | if (unlikely (status)(__builtin_expect (!!(status), 0))) |
| 1351 | return status; |
| 1352 | } |
| 1353 | |
| 1354 | return CAIRO_STATUS_SUCCESS; |
| 1355 | } |
| 1356 | |
| 1357 | static cairo_status_t |
| 1358 | cairo_cff_font_set_ros_strings (cairo_cff_font_t *font) |
| 1359 | { |
| 1360 | cairo_status_t status; |
| 1361 | unsigned char buf[30]; |
| 1362 | unsigned char *p; |
| 1363 | int sid1, sid2; |
| 1364 | const char *registry = "Adobe"; |
| 1365 | const char *ordering = "Identity"; |
| 1366 | |
| 1367 | sid1 = NUM_STD_STRINGS391 + _cairo_array_num_elements (&font->strings_subset_index); |
| 1368 | status = cff_index_append_copy (&font->strings_subset_index, |
| 1369 | (unsigned char *)registry, |
| 1370 | strlen(registry)); |
| 1371 | if (unlikely (status)(__builtin_expect (!!(status), 0))) |
| 1372 | return status; |
| 1373 | |
| 1374 | sid2 = NUM_STD_STRINGS391 + _cairo_array_num_elements (&font->strings_subset_index); |
| 1375 | status = cff_index_append_copy (&font->strings_subset_index, |
| 1376 | (unsigned char *)ordering, |
| 1377 | strlen(ordering)); |
| 1378 | if (unlikely (status)(__builtin_expect (!!(status), 0))) |
| 1379 | return status; |
| 1380 | |
| 1381 | p = encode_integer (buf, sid1); |
| 1382 | p = encode_integer (p, sid2); |
| 1383 | p = encode_integer (p, 0); |
| 1384 | status = cff_dict_set_operands (font->top_dict, ROS_OP0x0c1e, buf, p - buf); |
| 1385 | if (unlikely (status)(__builtin_expect (!!(status), 0))) |
| 1386 | return status; |
| 1387 | |
| 1388 | p = encode_integer (buf, font->scaled_font_subset->num_glyphs); |
| 1389 | status = cff_dict_set_operands (font->top_dict, CIDCOUNT_OP0x0c22, buf, p - buf); |
| 1390 | if (unlikely (status)(__builtin_expect (!!(status), 0))) |
| 1391 | return status; |
| 1392 | |
| 1393 | return CAIRO_STATUS_SUCCESS; |
| 1394 | } |
| 1395 | |
| 1396 | static cairo_status_t |
| 1397 | cairo_cff_font_subset_dict_string(cairo_cff_font_t *font, |
| 1398 | cairo_hash_table_t *dict, |
| 1399 | int operator) |
| 1400 | { |
| 1401 | int size; |
| 1402 | unsigned char *p; |
| 1403 | int sid; |
| 1404 | unsigned char buf[100]; |
| 1405 | cff_index_element_t *element; |
| 1406 | cairo_status_t status; |
| 1407 | |
| 1408 | p = cff_dict_get_operands (dict, operator, &size); |
| 1409 | if (!p) |
| 1410 | return CAIRO_STATUS_SUCCESS; |
| 1411 | |
| 1412 | decode_integer (p, &sid); |
| 1413 | if (sid < NUM_STD_STRINGS391) |
| 1414 | return CAIRO_STATUS_SUCCESS; |
| 1415 | |
| 1416 | element = _cairo_array_index (&font->strings_index, sid - NUM_STD_STRINGS391); |
| 1417 | sid = NUM_STD_STRINGS391 + _cairo_array_num_elements (&font->strings_subset_index); |
| 1418 | status = cff_index_append (&font->strings_subset_index, element->data, element->length); |
| 1419 | if (unlikely (status)(__builtin_expect (!!(status), 0))) |
| 1420 | return status; |
| 1421 | |
| 1422 | p = encode_integer (buf, sid); |
| 1423 | status = cff_dict_set_operands (dict, operator, buf, p - buf); |
| 1424 | if (unlikely (status)(__builtin_expect (!!(status), 0))) |
| 1425 | return status; |
| 1426 | |
| 1427 | return CAIRO_STATUS_SUCCESS; |
| 1428 | } |
| 1429 | |
| 1430 | static const int dict_strings[] = { |
| 1431 | VERSION_OP0x0000, |
| 1432 | NOTICE_OP0x0001, |
| 1433 | COPYRIGHT_OP0x0c00, |
| 1434 | FULLNAME_OP0x0002, |
| 1435 | FAMILYNAME_OP0x0003, |
| 1436 | WEIGHT_OP0x0004, |
| 1437 | POSTSCRIPT_OP0x0c15, |
| 1438 | BASEFONTNAME_OP0x0c16, |
| 1439 | FONTNAME_OP0x0c26, |
| 1440 | }; |
| 1441 | |
| 1442 | static cairo_status_t |
| 1443 | cairo_cff_font_subset_dict_strings (cairo_cff_font_t *font, |
| 1444 | cairo_hash_table_t *dict) |
| 1445 | { |
| 1446 | cairo_status_t status; |
| 1447 | unsigned int i; |
| 1448 | |
| 1449 | for (i = 0; i < ARRAY_LENGTH (dict_strings)((int) (sizeof (dict_strings) / sizeof (dict_strings[0]))); i++) { |
| 1450 | status = cairo_cff_font_subset_dict_string (font, dict, dict_strings[i]); |
| 1451 | if (unlikely (status)(__builtin_expect (!!(status), 0))) |
| 1452 | return status; |
| 1453 | } |
| 1454 | |
| 1455 | return CAIRO_STATUS_SUCCESS; |
| 1456 | } |
| 1457 | |
| 1458 | static unsigned char * |
| 1459 | type2_decode_integer (unsigned char *p, int *integer) |
| 1460 | { |
| 1461 | if (*p == 28) { |
| 1462 | *integer = p[1] << 8 | p[2]; |
| 1463 | p += 3; |
| 1464 | } else if (*p <= 246) { |
| 1465 | *integer = *p++ - 139; |
| 1466 | } else if (*p <= 250) { |
| 1467 | *integer = (p[0] - 247) * 256 + p[1] + 108; |
| 1468 | p += 2; |
| 1469 | } else if (*p <= 254) { |
| 1470 | *integer = -(p[0] - 251) * 256 - p[1] - 108; |
| 1471 | p += 2; |
| 1472 | } else { /* *p == 255 */ |
| 1473 | /* 16.16 fixed-point number. The fraction is ignored. */ |
| 1474 | *integer = (int16_t)((p[1] << 8) | p[2]); |
| 1475 | p += 5; |
| 1476 | } |
| 1477 | return p; |
| 1478 | } |
| 1479 | |
| 1480 | /* Type 2 charstring parser for finding calls to local or global |
| 1481 | * subroutines. For non Opentype CFF fonts it also gets the glyph |
| 1482 | * widths. |
| 1483 | * |
| 1484 | * When we find a subroutine operator, the subroutine is marked as in |
| 1485 | * use and recursively followed. The subroutine number is the value on |
| 1486 | * the top of the stack when the subroutine operator is executed. In |
| 1487 | * most fonts the subroutine number is encoded in an integer |
| 1488 | * immediately preceding the subroutine operator. However it is |
| 1489 | * possible for the subroutine number on the stack to be the result of |
| 1490 | * a computation (in which case there will be an operator preceding |
| 1491 | * the subroutine operator). If this occurs, subroutine subsetting is |
| 1492 | * disabled since we can't easily determine which subroutines are |
| 1493 | * used. |
| 1494 | * |
| 1495 | * The width, if present, is the first integer in the charstring. The |
| 1496 | * only way to confirm if the integer at the start of the charstring is |
| 1497 | * the width is when the first stack clearing operator is parsed, |
| 1498 | * check if there is an extra integer left over on the stack. |
| 1499 | * |
| 1500 | * When the first stack clearing operator is encountered |
| 1501 | * type2_find_width is set to FALSE and type2_found_width is set to |
| 1502 | * TRUE if an extra argument is found, otherwise FALSE. |
| 1503 | */ |
| 1504 | static cairo_status_t |
| 1505 | cairo_cff_parse_charstring (cairo_cff_font_t *font, |
| 1506 | unsigned char *charstring, int length, |
| 1507 | int glyph_id, |
| 1508 | cairo_bool_t need_width) |
| 1509 | { |
| 1510 | unsigned char *p = charstring; |
| 1511 | unsigned char *end = charstring + length; |
| 1512 | int integer; |
| 1513 | int hint_bytes; |
| 1514 | int sub_num; |
| 1515 | cff_index_element_t *element; |
| 1516 | int fd; |
| 1517 | |
| 1518 | while (p < end) { |
| 1519 | if (*p == 28 || *p >= 32) { |
| 1520 | /* Integer value */ |
| 1521 | p = type2_decode_integer (p, &integer); |
| 1522 | font->type2_stack_size++; |
| 1523 | font->type2_stack_top_value = integer; |
| 1524 | font->type2_stack_top_is_int = TRUE1; |
| 1525 | if (!font->type2_seen_first_int) { |
| 1526 | font->type2_width = integer; |
| 1527 | font->type2_seen_first_int = TRUE1; |
| 1528 | } |
| 1529 | } else if (*p == TYPE2_hstem0x0001 || *p == TYPE2_vstem0x0003 || |
| 1530 | *p == TYPE2_hstemhm0x0012 || *p == TYPE2_vstemhm0x0017) { |
| 1531 | /* Hint operator. The number of hints declared by the |
| 1532 | * operator depends on the size of the stack. */ |
| 1533 | font->type2_stack_top_is_int = FALSE0; |
| 1534 | font->type2_num_hints += font->type2_stack_size/2; |
| 1535 | if (font->type2_find_width && font->type2_stack_size % 2) |
| 1536 | font->type2_found_width = TRUE1; |
| 1537 | |
| 1538 | font->type2_stack_size = 0; |
| 1539 | font->type2_find_width = FALSE0; |
| 1540 | p++; |
| 1541 | } else if (*p == TYPE2_hintmask0x0013 || *p == TYPE2_cntrmask0x0014) { |
| 1542 | /* Hintmask operator. These operators are followed by a |
| 1543 | * variable length mask where the length depends on the |
| 1544 | * number of hints declared. The first time this is called |
| 1545 | * it is also an implicit vstem if there are arguments on |
| 1546 | * the stack. */ |
| 1547 | if (font->type2_hintmask_bytes == 0) { |
| 1548 | font->type2_stack_top_is_int = FALSE0; |
| 1549 | font->type2_num_hints += font->type2_stack_size/2; |
| 1550 | if (font->type2_find_width && font->type2_stack_size % 2) |
| 1551 | font->type2_found_width = TRUE1; |
| 1552 | |
| 1553 | font->type2_stack_size = 0; |
| 1554 | font->type2_find_width = FALSE0; |
| 1555 | font->type2_hintmask_bytes = (font->type2_num_hints+7)/8; |
| 1556 | } |
| 1557 | |
| 1558 | hint_bytes = font->type2_hintmask_bytes; |
| 1559 | p++; |
| 1560 | p += hint_bytes; |
| 1561 | } else if (*p == TYPE2_rmoveto0x0015) { |
| 1562 | if (font->type2_find_width && font->type2_stack_size > 2) |
| 1563 | font->type2_found_width = TRUE1; |
| 1564 | |
| 1565 | font->type2_stack_size = 0; |
| 1566 | font->type2_find_width = FALSE0; |
| 1567 | font->type2_has_path = TRUE1; |
| 1568 | p++; |
| 1569 | } else if (*p == TYPE2_hmoveto0x0016 || *p == TYPE2_vmoveto0x0004) { |
| 1570 | if (font->type2_find_width && font->type2_stack_size > 1) |
| 1571 | font->type2_found_width = TRUE1; |
| 1572 | |
| 1573 | font->type2_stack_size = 0; |
| 1574 | font->type2_find_width = FALSE0; |
| 1575 | font->type2_has_path = TRUE1; |
| 1576 | p++; |
| 1577 | } else if (*p == TYPE2_endchar0x000e) { |
| 1578 | if (!font->type2_has_path && font->type2_stack_size > 3) |
| 1579 | return CAIRO_INT_STATUS_UNSUPPORTED; /* seac (Ref Appendix C of Type 2 Charstring Format */ |
| 1580 | |
| 1581 | if (font->type2_find_width && font->type2_stack_size > 0) |
| 1582 | font->type2_found_width = TRUE1; |
| 1583 | |
| 1584 | return CAIRO_STATUS_SUCCESS; |
| 1585 | } else if (*p == TYPE2_callsubr0x000a) { |
| 1586 | /* call to local subroutine */ |
| 1587 | if (! font->type2_stack_top_is_int) |
| 1588 | return CAIRO_INT_STATUS_UNSUPPORTED; |
| 1589 | |
| 1590 | if (++font->type2_nesting_level > MAX_SUBROUTINE_NESTING10) |
| 1591 | return CAIRO_INT_STATUS_UNSUPPORTED; |
| 1592 | |
| 1593 | p++; |
| 1594 | font->type2_stack_top_is_int = FALSE0; |
| 1595 | font->type2_stack_size--; |
| 1596 | if (font->type2_find_width && font->type2_stack_size == 0) |
| 1597 | font->type2_seen_first_int = FALSE0; |
| 1598 | |
| 1599 | if (font->is_cid) { |
| 1600 | fd = font->fdselect[glyph_id]; |
| 1601 | sub_num = font->type2_stack_top_value + font->fd_local_sub_bias[fd]; |
| 1602 | if (sub_num >= (int)_cairo_array_num_elements(&font->fd_local_sub_index[fd])) |
| 1603 | return CAIRO_INT_STATUS_UNSUPPORTED; |
| 1604 | element = _cairo_array_index (&font->fd_local_sub_index[fd], sub_num); |
| 1605 | if (! font->fd_local_subs_used[fd][sub_num]) { |
| 1606 | font->fd_local_subs_used[fd][sub_num] = TRUE1; |
| 1607 | cairo_cff_parse_charstring (font, element->data, element->length, glyph_id, need_width); |
| 1608 | } |
| 1609 | } else { |
| 1610 | sub_num = font->type2_stack_top_value + font->local_sub_bias; |
| 1611 | if (sub_num >= (int)_cairo_array_num_elements(&font->local_sub_index)) |
| 1612 | return CAIRO_INT_STATUS_UNSUPPORTED; |
| 1613 | element = _cairo_array_index (&font->local_sub_index, sub_num); |
| 1614 | if (! font->local_subs_used[sub_num] || |
| 1615 | (need_width && !font->type2_found_width)) |
| 1616 | { |
| 1617 | font->local_subs_used[sub_num] = TRUE1; |
| 1618 | cairo_cff_parse_charstring (font, element->data, element->length, glyph_id, need_width); |
| 1619 | } |
| 1620 | } |
| 1621 | font->type2_nesting_level--; |
| 1622 | } else if (*p == TYPE2_callgsubr0x001d) { |
| 1623 | /* call to global subroutine */ |
| 1624 | if (! font->type2_stack_top_is_int) |
| 1625 | return CAIRO_INT_STATUS_UNSUPPORTED; |
| 1626 | |
| 1627 | if (++font->type2_nesting_level > MAX_SUBROUTINE_NESTING10) |
| 1628 | return CAIRO_INT_STATUS_UNSUPPORTED; |
| 1629 | |
| 1630 | p++; |
| 1631 | font->type2_stack_size--; |
| 1632 | font->type2_stack_top_is_int = FALSE0; |
| 1633 | if (font->type2_find_width && font->type2_stack_size == 0) |
| 1634 | font->type2_seen_first_int = FALSE0; |
| 1635 | |
| 1636 | sub_num = font->type2_stack_top_value + font->global_sub_bias; |
| 1637 | if (sub_num >= (int)_cairo_array_num_elements(&font->global_sub_index)) |
| 1638 | return CAIRO_INT_STATUS_UNSUPPORTED; |
| 1639 | element = _cairo_array_index (&font->global_sub_index, sub_num); |
| 1640 | if (! font->global_subs_used[sub_num] || |
| 1641 | (need_width && !font->type2_found_width)) |
| 1642 | { |
| 1643 | font->global_subs_used[sub_num] = TRUE1; |
| 1644 | cairo_cff_parse_charstring (font, element->data, element->length, glyph_id, need_width); |
| 1645 | } |
| 1646 | font->type2_nesting_level--; |
| 1647 | } else if (*p == 12) { |
| 1648 | /* 2 byte instruction */ |
| 1649 | |
| 1650 | /* All the 2 byte operators are either not valid before a |
| 1651 | * stack clearing operator or they are one of the |
| 1652 | * arithmetic, storage, or conditional operators. */ |
| 1653 | if (need_width && font->type2_find_width) |
| 1654 | return CAIRO_INT_STATUS_UNSUPPORTED; |
| 1655 | |
| 1656 | p += 2; |
| 1657 | font->type2_stack_top_is_int = FALSE0; |
| 1658 | } else { |
| 1659 | /* 1 byte instruction */ |
| 1660 | p++; |
| 1661 | font->type2_stack_top_is_int = FALSE0; |
| 1662 | } |
| 1663 | } |
| 1664 | |
| 1665 | return CAIRO_STATUS_SUCCESS; |
| 1666 | } |
| 1667 | |
| 1668 | static cairo_status_t |
| 1669 | cairo_cff_find_width_and_subroutines_used (cairo_cff_font_t *font, |
| 1670 | unsigned char *charstring, int length, |
| 1671 | int glyph_id, int subset_id) |
| 1672 | { |
| 1673 | cairo_status_t status; |
| 1674 | int width; |
| 1675 | int fd; |
| 1676 | |
| 1677 | font->type2_stack_size = 0; |
| 1678 | font->type2_stack_top_value = 0;; |
| 1679 | font->type2_stack_top_is_int = FALSE0; |
| 1680 | font->type2_num_hints = 0; |
| 1681 | font->type2_hintmask_bytes = 0; |
| 1682 | font->type2_nesting_level = 0; |
| 1683 | font->type2_seen_first_int = FALSE0; |
| 1684 | font->type2_find_width = TRUE1; |
| 1685 | font->type2_found_width = FALSE0; |
| 1686 | font->type2_width = 0; |
| 1687 | font->type2_has_path = FALSE0; |
| 1688 | |
| 1689 | status = cairo_cff_parse_charstring (font, charstring, length, glyph_id, TRUE1); |
| 1690 | if (status) |
| 1691 | return status; |
| 1692 | |
| 1693 | if (!font->is_opentype) { |
| 1694 | if (font->is_cid) { |
| 1695 | fd = font->fdselect[glyph_id]; |
| 1696 | if (font->type2_found_width) |
| 1697 | width = font->fd_nominal_width[fd] + font->type2_width; |
| 1698 | else |
| 1699 | width = font->fd_default_width[fd]; |
| 1700 | } else { |
| 1701 | if (font->type2_found_width) |
| 1702 | width = font->nominal_width + font->type2_width; |
| 1703 | else |
| 1704 | width = font->default_width; |
| 1705 | } |
| 1706 | font->widths[subset_id] = width; |
| 1707 | } |
| 1708 | |
| 1709 | return CAIRO_STATUS_SUCCESS; |
| 1710 | } |
| 1711 | |
| 1712 | static cairo_int_status_t |
| 1713 | cairo_cff_font_get_gid_for_cid (cairo_cff_font_t *font, unsigned long cid, unsigned long *gid) |
| 1714 | { |
| 1715 | unsigned char *p; |
| 1716 | unsigned long first_gid; |
| 1717 | unsigned long first_cid; |
| 1718 | int num_left; |
| 1719 | unsigned long c, g; |
| 1720 | |
| 1721 | if (cid == 0) { |
| 1722 | *gid = 0; |
| 1723 | return CAIRO_STATUS_SUCCESS; |
| 1724 | } |
| 1725 | |
| 1726 | switch (font->charset[0]) { |
| 1727 | /* Format 0 */ |
| 1728 | case 0: |
| 1729 | p = font->charset + 1; |
| 1730 | g = 1; |
| 1731 | while (g <= (unsigned)font->num_glyphs && p < font->data_end) { |
| 1732 | c = get_unaligned_be16 (p); |
| 1733 | if (c == cid) { |
| 1734 | *gid = g; |
| 1735 | return CAIRO_STATUS_SUCCESS; |
| 1736 | } |
| 1737 | g++; |
| 1738 | p += 2; |
| 1739 | } |
| 1740 | break; |
| 1741 | |
| 1742 | /* Format 1 */ |
| 1743 | case 1: |
| 1744 | first_gid = 1; |
| 1745 | p = font->charset + 1; |
| 1746 | while (first_gid <= (unsigned)font->num_glyphs && p + 2 < font->data_end) { |
| 1747 | first_cid = get_unaligned_be16 (p); |
| 1748 | num_left = p[2]; |
| 1749 | if (cid >= first_cid && cid <= first_cid + num_left) { |
| 1750 | *gid = first_gid + cid - first_cid; |
| 1751 | return CAIRO_STATUS_SUCCESS; |
| 1752 | } |
| 1753 | first_gid += num_left + 1; |
| 1754 | p += 3; |
| 1755 | } |
| 1756 | break; |
| 1757 | |
| 1758 | /* Format 2 */ |
| 1759 | case 2: |
| 1760 | first_gid = 1; |
| 1761 | p = font->charset + 1; |
| 1762 | while (first_gid <= (unsigned)font->num_glyphs && p + 3 < font->data_end) { |
| 1763 | first_cid = get_unaligned_be16 (p); |
| 1764 | num_left = get_unaligned_be16 (p+2); |
| 1765 | if (cid >= first_cid && cid <= first_cid + num_left) { |
| 1766 | *gid = first_gid + cid - first_cid; |
| 1767 | return CAIRO_STATUS_SUCCESS; |
| 1768 | } |
| 1769 | first_gid += num_left + 1; |
| 1770 | p += 4; |
| 1771 | } |
| 1772 | break; |
| 1773 | |
| 1774 | default: |
| 1775 | break; |
| 1776 | } |
| 1777 | return CAIRO_INT_STATUS_UNSUPPORTED; |
| 1778 | } |
| 1779 | |
| 1780 | static cairo_int_status_t |
| 1781 | cairo_cff_font_subset_charstrings_and_subroutines (cairo_cff_font_t *font) |
| 1782 | { |
| 1783 | cff_index_element_t *element; |
| 1784 | unsigned int i; |
| 1785 | cairo_int_status_t status; |
| 1786 | unsigned long glyph, cid; |
| 1787 | |
| 1788 | font->subset_subroutines = TRUE1; |
| 1789 | for (i = 0; i < font->scaled_font_subset->num_glyphs; i++) { |
| 1790 | if (font->is_cid && !font->is_opentype) { |
| 1791 | cid = font->scaled_font_subset->glyphs[i]; |
| 1792 | status = cairo_cff_font_get_gid_for_cid (font, cid, &glyph); |
| 1793 | if (unlikely (status)(__builtin_expect (!!(status), 0))) |
| 1794 | return status; |
| 1795 | } else { |
| 1796 | glyph = font->scaled_font_subset->glyphs[i]; |
| 1797 | } |
| 1798 | element = _cairo_array_index (&font->charstrings_index, glyph); |
| 1799 | status = cff_index_append (&font->charstrings_subset_index, |
| 1800 | element->data, |
| 1801 | element->length); |
| 1802 | if (unlikely (status)(__builtin_expect (!!(status), 0))) |
| 1803 | return status; |
| 1804 | |
| 1805 | if (font->subset_subroutines) { |
| 1806 | status = cairo_cff_find_width_and_subroutines_used (font, |
| 1807 | element->data, element->length, |
| 1808 | glyph, i); |
| 1809 | if (status == CAIRO_INT_STATUS_UNSUPPORTED) { |
| 1810 | /* If parsing the charstrings fails we embed all the |
| 1811 | * subroutines. But if the font is not opentype we |
| 1812 | * need to successfully parse all charstrings to get |
| 1813 | * the widths. */ |
| 1814 | font->subset_subroutines = FALSE0; |
| 1815 | if (!font->is_opentype) |
| 1816 | return status; |
| 1817 | } else if (unlikely (status)(__builtin_expect (!!(status), 0))) { |
| 1818 | return status; |
| 1819 | } |
| 1820 | } |
| 1821 | } |
| 1822 | |
| 1823 | return CAIRO_STATUS_SUCCESS; |
| 1824 | } |
| 1825 | |
| 1826 | static cairo_status_t |
| 1827 | cairo_cff_font_subset_fontdict (cairo_cff_font_t *font) |
| 1828 | { |
| 1829 | unsigned int i; |
| 1830 | int fd; |
| 1831 | int *reverse_map; |
| 1832 | unsigned long cid, gid; |
| 1833 | cairo_int_status_t status; |
| 1834 | |
| 1835 | font->fdselect_subset = calloc (font->scaled_font_subset->num_glyphs, |
| 1836 | sizeof (int)); |
| 1837 | if (unlikely (font->fdselect_subset == NULL)(__builtin_expect (!!(font->fdselect_subset == ((void*)0)) , 0))) |
| 1838 | return _cairo_error (CAIRO_STATUS_NO_MEMORY); |
| 1839 | |
| 1840 | font->fd_subset_map = calloc (font->num_fontdicts, sizeof (int)); |
| 1841 | if (unlikely (font->fd_subset_map == NULL)(__builtin_expect (!!(font->fd_subset_map == ((void*)0)), 0 ))) |
| 1842 | return _cairo_error (CAIRO_STATUS_NO_MEMORY); |
| 1843 | |
| 1844 | font->private_dict_offset = calloc (font->num_fontdicts, sizeof (int)); |
| 1845 | if (unlikely (font->private_dict_offset == NULL)(__builtin_expect (!!(font->private_dict_offset == ((void* )0)), 0))) |
| 1846 | return _cairo_error (CAIRO_STATUS_NO_MEMORY); |
| 1847 | |
| 1848 | reverse_map = calloc (font->num_fontdicts, sizeof (int)); |
| 1849 | if (unlikely (reverse_map == NULL)(__builtin_expect (!!(reverse_map == ((void*)0)), 0))) |
| 1850 | return _cairo_error (CAIRO_STATUS_NO_MEMORY); |
| 1851 | |
| 1852 | for (i = 0; i < font->num_fontdicts; i++) |
| 1853 | reverse_map[i] = -1; |
| 1854 | |
| 1855 | font->num_subset_fontdicts = 0; |
| 1856 | for (i = 0; i < font->scaled_font_subset->num_glyphs; i++) { |
| 1857 | if (font->is_opentype) { |
| 1858 | gid = font->scaled_font_subset->glyphs[i]; |
| 1859 | } else { |
| 1860 | cid = font->scaled_font_subset->glyphs[i]; |
| 1861 | status = cairo_cff_font_get_gid_for_cid (font, cid, &gid); |
| 1862 | if (unlikely (status)(__builtin_expect (!!(status), 0))) { |
| 1863 | free (reverse_map); |
| 1864 | return status; |
| 1865 | } |
| 1866 | } |
| 1867 | |
| 1868 | fd = font->fdselect[gid]; |
| 1869 | if (reverse_map[fd] < 0) { |
| 1870 | font->fd_subset_map[font->num_subset_fontdicts] = fd; |
| 1871 | reverse_map[fd] = font->num_subset_fontdicts++; |
| 1872 | } |
| 1873 | font->fdselect_subset[i] = reverse_map[fd]; |
| 1874 | } |
| 1875 | |
| 1876 | free (reverse_map); |
| 1877 | |
| 1878 | return CAIRO_STATUS_SUCCESS; |
| 1879 | } |
| 1880 | |
| 1881 | static cairo_status_t |
| 1882 | cairo_cff_font_create_cid_fontdict (cairo_cff_font_t *font) |
| 1883 | { |
| 1884 | unsigned char buf[100]; |
| 1885 | unsigned char *end_buf; |
| 1886 | cairo_status_t status; |
| 1887 | |
| 1888 | font->num_fontdicts = 1; |
| 1889 | font->fd_dict = _cairo_malloc (sizeof (cairo_hash_table_t *))((sizeof (cairo_hash_table_t *)) != 0 ? malloc(sizeof (cairo_hash_table_t *)) : ((void*)0)); |
| 1890 | if (unlikely (font->fd_dict == NULL)(__builtin_expect (!!(font->fd_dict == ((void*)0)), 0))) |
| 1891 | return _cairo_error (CAIRO_STATUS_NO_MEMORY); |
| 1892 | |
| 1893 | if (cff_dict_init (&font->fd_dict[0])) { |
| 1894 | free (font->fd_dict); |
| 1895 | font->fd_dict = NULL((void*)0); |
| 1896 | font->num_fontdicts = 0; |
| 1897 | return _cairo_error (CAIRO_STATUS_NO_MEMORY); |
| 1898 | } |
| 1899 | |
| 1900 | font->fd_subset_map = _cairo_malloc (sizeof (int))((sizeof (int)) != 0 ? malloc(sizeof (int)) : ((void*)0)); |
| 1901 | if (unlikely (font->fd_subset_map == NULL)(__builtin_expect (!!(font->fd_subset_map == ((void*)0)), 0 ))) |
| 1902 | return _cairo_error (CAIRO_STATUS_NO_MEMORY); |
| 1903 | |
| 1904 | font->private_dict_offset = _cairo_malloc (sizeof (int))((sizeof (int)) != 0 ? malloc(sizeof (int)) : ((void*)0)); |
| 1905 | if (unlikely (font->private_dict_offset == NULL)(__builtin_expect (!!(font->private_dict_offset == ((void* )0)), 0))) |
| 1906 | return _cairo_error (CAIRO_STATUS_NO_MEMORY); |
| 1907 | |
| 1908 | font->fd_subset_map[0] = 0; |
| 1909 | font->num_subset_fontdicts = 1; |
| 1910 | |
| 1911 | /* Set integer operand to max value to use max size encoding to reserve |
| 1912 | * space for any value later */ |
| 1913 | end_buf = encode_integer_max (buf, 0); |
| 1914 | end_buf = encode_integer_max (end_buf, 0); |
| 1915 | status = cff_dict_set_operands (font->fd_dict[0], PRIVATE_OP0x0012, buf, end_buf - buf); |
| 1916 | if (unlikely (status)(__builtin_expect (!!(status), 0))) |
| 1917 | return status; |
| 1918 | |
| 1919 | return CAIRO_STATUS_SUCCESS; |
| 1920 | } |
| 1921 | |
| 1922 | static cairo_status_t |
| 1923 | cairo_cff_font_subset_strings (cairo_cff_font_t *font) |
| 1924 | { |
| 1925 | cairo_status_t status; |
| 1926 | unsigned int i; |
| 1927 | |
| 1928 | status = cairo_cff_font_subset_dict_strings (font, font->top_dict); |
| 1929 | if (unlikely (status)(__builtin_expect (!!(status), 0))) |
| 1930 | return status; |
| 1931 | |
| 1932 | if (font->is_cid) { |
| 1933 | for (i = 0; i < font->num_subset_fontdicts; i++) { |
| 1934 | status = cairo_cff_font_subset_dict_strings (font, font->fd_dict[font->fd_subset_map[i]]); |
| 1935 | if (unlikely (status)(__builtin_expect (!!(status), 0))) |
| 1936 | return status; |
| 1937 | |
| 1938 | status = cairo_cff_font_subset_dict_strings (font, font->fd_private_dict[font->fd_subset_map[i]]); |
| 1939 | if (unlikely (status)(__builtin_expect (!!(status), 0))) |
| 1940 | return status; |
| 1941 | } |
| 1942 | } else { |
| 1943 | status = cairo_cff_font_subset_dict_strings (font, font->private_dict); |
| 1944 | } |
| 1945 | |
| 1946 | return status; |
| 1947 | } |
| 1948 | |
| 1949 | /* The Euro is the only the only character in the winansi encoding |
| 1950 | * with a glyph name that is not a CFF standard string. As the strings |
| 1951 | * are written before the charset, we need to check during the |
| 1952 | * subsetting phase if the Euro glyph is required and add the |
| 1953 | * glyphname to the list of strings to write out. |
| 1954 | */ |
| 1955 | static cairo_status_t |
| 1956 | cairo_cff_font_add_euro_charset_string (cairo_cff_font_t *font) |
| 1957 | { |
| 1958 | cairo_status_t status; |
| 1959 | unsigned int i; |
| 1960 | int ch; |
| 1961 | const char *euro = "Euro"; |
| 1962 | |
| 1963 | for (i = 1; i < font->scaled_font_subset->num_glyphs; i++) { |
| 1964 | ch = font->scaled_font_subset->to_latin_char[i]; |
| 1965 | if (ch == 128) { |
| 1966 | font->euro_sid = NUM_STD_STRINGS391 + _cairo_array_num_elements (&font->strings_subset_index); |
| 1967 | status = cff_index_append_copy (&font->strings_subset_index, |
| 1968 | (unsigned char *)euro, strlen(euro)); |
| 1969 | return status; |
| 1970 | } |
| 1971 | } |
| 1972 | |
| 1973 | return CAIRO_STATUS_SUCCESS; |
| 1974 | } |
| 1975 | |
| 1976 | static cairo_status_t |
| 1977 | cairo_cff_font_subset_font (cairo_cff_font_t *font) |
| 1978 | { |
| 1979 | cairo_status_t status; |
| 1980 | |
| 1981 | if (!font->scaled_font_subset->is_latin) { |
| 1982 | status = cairo_cff_font_set_ros_strings (font); |
| 1983 | if (unlikely (status)(__builtin_expect (!!(status), 0))) |
| 1984 | return status; |
| 1985 | } |
| 1986 | |
| 1987 | status = cairo_cff_font_subset_charstrings_and_subroutines (font); |
| 1988 | if (unlikely (status)(__builtin_expect (!!(status), 0))) |
| 1989 | return status; |
| 1990 | |
| 1991 | if (!font->scaled_font_subset->is_latin) { |
| 1992 | if (font->is_cid) |
| 1993 | status = cairo_cff_font_subset_fontdict (font); |
| 1994 | else |
| 1995 | status = cairo_cff_font_create_cid_fontdict (font); |
| 1996 | if (unlikely (status)(__builtin_expect (!!(status), 0))) |
| 1997 | return status; |
| 1998 | } else { |
| 1999 | font->private_dict_offset = _cairo_malloc (sizeof (int))((sizeof (int)) != 0 ? malloc(sizeof (int)) : ((void*)0)); |
| 2000 | if (unlikely (font->private_dict_offset == NULL)(__builtin_expect (!!(font->private_dict_offset == ((void* )0)), 0))) |
| 2001 | return _cairo_error (CAIRO_STATUS_NO_MEMORY); |
| 2002 | } |
| 2003 | |
| 2004 | status = cairo_cff_font_subset_strings (font); |
| 2005 | if (unlikely (status)(__builtin_expect (!!(status), 0))) |
| 2006 | return status; |
| 2007 | |
| 2008 | if (font->scaled_font_subset->is_latin) |
| 2009 | status = cairo_cff_font_add_euro_charset_string (font); |
| 2010 | |
| 2011 | return status; |
| 2012 | } |
| 2013 | |
| 2014 | /* Set the operand of the specified operator in the (already written) |
| 2015 | * top dict to point to the current position in the output |
| 2016 | * array. Operands updated with this function must have previously |
| 2017 | * been encoded with the 5-byte (max) integer encoding. */ |
| 2018 | static void |
| 2019 | cairo_cff_font_set_topdict_operator_to_cur_pos (cairo_cff_font_t *font, |
| 2020 | int operator) |
| 2021 | { |
| 2022 | int cur_pos; |
| 2023 | int offset; |
| 2024 | int size; |
| 2025 | unsigned char buf[10]; |
| 2026 | unsigned char *buf_end; |
| 2027 | unsigned char *op_ptr; |
| 2028 | |
| 2029 | cur_pos = _cairo_array_num_elements (&font->output); |
| 2030 | buf_end = encode_integer_max (buf, cur_pos); |
| 2031 | offset = cff_dict_get_location (font->top_dict, operator, &size); |
| 2032 | assert (offset > 0)((void) sizeof ((offset > 0) ? 1 : 0), __extension__ ({ if (offset > 0) ; else __assert_fail ("offset > 0", "/root/firefox-clang/gfx/cairo/cairo/src/cairo-cff-subset.c" , 2032, __extension__ __PRETTY_FUNCTION__); })); |
| 2033 | op_ptr = _cairo_array_index (&font->output, offset); |
| 2034 | memcpy (op_ptr, buf, buf_end - buf); |
| 2035 | } |
| 2036 | |
| 2037 | static cairo_status_t |
| 2038 | cairo_cff_font_write_header (cairo_cff_font_t *font) |
| 2039 | { |
| 2040 | return _cairo_array_append_multiple (&font->output, |
| 2041 | font->header, |
| 2042 | font->header->header_size); |
| 2043 | } |
| 2044 | |
| 2045 | static cairo_status_t |
| 2046 | cairo_cff_font_write_name (cairo_cff_font_t *font) |
| 2047 | { |
| 2048 | cairo_status_t status = CAIRO_STATUS_SUCCESS; |
| 2049 | cairo_array_t index; |
| 2050 | |
| 2051 | cff_index_init (&index); |
| 2052 | |
| 2053 | status = cff_index_append_copy (&index, |
| 2054 | (unsigned char *) font->ps_name, |
| 2055 | strlen(font->ps_name)); |
| 2056 | if (unlikely (status)(__builtin_expect (!!(status), 0))) |
| 2057 | goto FAIL; |
| 2058 | |
| 2059 | status = cff_index_write (&index, &font->output); |
| 2060 | if (unlikely (status)(__builtin_expect (!!(status), 0))) |
| 2061 | goto FAIL; |
| 2062 | |
| 2063 | FAIL: |
| 2064 | cff_index_fini (&index); |
| 2065 | |
| 2066 | return status; |
| 2067 | } |
| 2068 | |
| 2069 | static cairo_status_t |
| 2070 | cairo_cff_font_write_top_dict (cairo_cff_font_t *font) |
| 2071 | { |
| 2072 | uint16_t count; |
| 2073 | unsigned char buf[10]; |
| 2074 | unsigned char *p; |
| 2075 | int offset_index; |
| 2076 | int dict_start, dict_size; |
| 2077 | int offset_size = 4; |
| 2078 | cairo_status_t status; |
| 2079 | |
| 2080 | /* Write an index containing the top dict */ |
| 2081 | |
| 2082 | count = cpu_to_be16 (1); |
| 2083 | status = _cairo_array_append_multiple (&font->output, &count, 2); |
| 2084 | if (unlikely (status)(__builtin_expect (!!(status), 0))) |
| 2085 | return status; |
| 2086 | buf[0] = offset_size; |
| 2087 | status = _cairo_array_append (&font->output, buf); |
| 2088 | if (unlikely (status)(__builtin_expect (!!(status), 0))) |
| 2089 | return status; |
| 2090 | encode_index_offset (buf, offset_size, 1); |
| 2091 | status = _cairo_array_append_multiple (&font->output, buf, offset_size); |
| 2092 | if (unlikely (status)(__builtin_expect (!!(status), 0))) |
| 2093 | return status; |
| 2094 | |
| 2095 | /* Reserve space for last element of offset array and update after |
| 2096 | * dict is written */ |
| 2097 | offset_index = _cairo_array_num_elements (&font->output); |
| 2098 | status = _cairo_array_append_multiple (&font->output, buf, offset_size); |
| 2099 | if (unlikely (status)(__builtin_expect (!!(status), 0))) |
| 2100 | return status; |
| 2101 | |
| 2102 | dict_start = _cairo_array_num_elements (&font->output); |
| 2103 | status = cff_dict_write (font->top_dict, &font->output); |
| 2104 | if (unlikely (status)(__builtin_expect (!!(status), 0))) |
| 2105 | return status; |
| 2106 | dict_size = _cairo_array_num_elements (&font->output) - dict_start; |
| 2107 | |
| 2108 | encode_index_offset (buf, offset_size, dict_size + 1); |
| 2109 | p = _cairo_array_index (&font->output, offset_index); |
| 2110 | memcpy (p, buf, offset_size); |
| 2111 | |
| 2112 | return CAIRO_STATUS_SUCCESS; |
| 2113 | } |
| 2114 | |
| 2115 | static cairo_status_t |
| 2116 | cairo_cff_font_write_strings (cairo_cff_font_t *font) |
| 2117 | { |
| 2118 | return cff_index_write (&font->strings_subset_index, &font->output); |
| 2119 | } |
| 2120 | |
| 2121 | static cairo_status_t |
| 2122 | cairo_cff_font_write_global_subrs (cairo_cff_font_t *font) |
| 2123 | { |
| 2124 | unsigned int i; |
| 2125 | unsigned char return_op = TYPE2_return0x000b; |
| 2126 | |
| 2127 | /* poppler and fontforge don't like zero length subroutines so we |
| 2128 | * replace unused subroutines with a 'return' instruction. */ |
| 2129 | if (font->subset_subroutines) { |
| 2130 | for (i = 0; i < _cairo_array_num_elements (&font->global_sub_index); i++) { |
| 2131 | if (! font->global_subs_used[i]) |
| 2132 | cff_index_set_object (&font->global_sub_index, i, &return_op, 1); |
| 2133 | } |
| 2134 | } |
| 2135 | |
| 2136 | return cff_index_write (&font->global_sub_index, &font->output); |
| 2137 | } |
| 2138 | |
| 2139 | static cairo_status_t |
| 2140 | cairo_cff_font_write_encoding (cairo_cff_font_t *font) |
| 2141 | { |
| 2142 | unsigned char buf[2]; |
| 2143 | cairo_status_t status; |
| 2144 | unsigned int i; |
| 2145 | |
| 2146 | cairo_cff_font_set_topdict_operator_to_cur_pos (font, ENCODING_OP0x0010); |
| 2147 | buf[0] = 0; /* Format 0 */ |
| 2148 | buf[1] = font->scaled_font_subset->num_glyphs - 1; |
| 2149 | status = _cairo_array_append_multiple (&font->output, buf, 2); |
| 2150 | if (unlikely (status)(__builtin_expect (!!(status), 0))) |
| 2151 | return status; |
| 2152 | |
| 2153 | for (i = 1; i < font->scaled_font_subset->num_glyphs; i++) { |
| 2154 | unsigned char ch = font->scaled_font_subset->to_latin_char[i]; |
| 2155 | status = _cairo_array_append (&font->output, &ch); |
| 2156 | if (unlikely (status)(__builtin_expect (!!(status), 0))) |
| 2157 | return status; |
| 2158 | } |
| 2159 | |
| 2160 | return CAIRO_STATUS_SUCCESS; |
| 2161 | } |
| 2162 | |
| 2163 | static cairo_status_t |
| 2164 | cairo_cff_font_write_fdselect (cairo_cff_font_t *font) |
| 2165 | { |
| 2166 | unsigned char data; |
| 2167 | unsigned int i; |
| 2168 | cairo_int_status_t status; |
| 2169 | |
| 2170 | cairo_cff_font_set_topdict_operator_to_cur_pos (font, FDSELECT_OP0x0c25); |
| 2171 | |
| 2172 | if (font->is_cid) { |
| 2173 | data = 0; |
| 2174 | status = _cairo_array_append (&font->output, &data); |
| 2175 | if (unlikely (status)(__builtin_expect (!!(status), 0))) |
| 2176 | return status; |
| 2177 | |
| 2178 | for (i = 0; i < font->scaled_font_subset->num_glyphs; i++) { |
| 2179 | data = font->fdselect_subset[i]; |
| 2180 | status = _cairo_array_append (&font->output, &data); |
| 2181 | if (unlikely (status)(__builtin_expect (!!(status), 0))) |
| 2182 | return status; |
| 2183 | } |
| 2184 | } else { |
| 2185 | unsigned char byte; |
| 2186 | uint16_t word; |
| 2187 | |
| 2188 | status = _cairo_array_grow_by (&font->output, 9); |
| 2189 | if (unlikely (status)(__builtin_expect (!!(status), 0))) |
| 2190 | return status; |
| 2191 | |
| 2192 | byte = 3; |
| 2193 | status = _cairo_array_append (&font->output, &byte); |
| 2194 | assert (status == CAIRO_INT_STATUS_SUCCESS)((void) sizeof ((status == CAIRO_INT_STATUS_SUCCESS) ? 1 : 0) , __extension__ ({ if (status == CAIRO_INT_STATUS_SUCCESS) ; else __assert_fail ("status == CAIRO_INT_STATUS_SUCCESS", "/root/firefox-clang/gfx/cairo/cairo/src/cairo-cff-subset.c" , 2194, __extension__ __PRETTY_FUNCTION__); })); |
| 2195 | |
| 2196 | word = cpu_to_be16 (1); |
| 2197 | status = _cairo_array_append_multiple (&font->output, &word, 2); |
| 2198 | assert (status == CAIRO_INT_STATUS_SUCCESS)((void) sizeof ((status == CAIRO_INT_STATUS_SUCCESS) ? 1 : 0) , __extension__ ({ if (status == CAIRO_INT_STATUS_SUCCESS) ; else __assert_fail ("status == CAIRO_INT_STATUS_SUCCESS", "/root/firefox-clang/gfx/cairo/cairo/src/cairo-cff-subset.c" , 2198, __extension__ __PRETTY_FUNCTION__); })); |
| 2199 | |
| 2200 | word = cpu_to_be16 (0); |
| 2201 | status = _cairo_array_append_multiple (&font->output, &word, 2); |
| 2202 | assert (status == CAIRO_INT_STATUS_SUCCESS)((void) sizeof ((status == CAIRO_INT_STATUS_SUCCESS) ? 1 : 0) , __extension__ ({ if (status == CAIRO_INT_STATUS_SUCCESS) ; else __assert_fail ("status == CAIRO_INT_STATUS_SUCCESS", "/root/firefox-clang/gfx/cairo/cairo/src/cairo-cff-subset.c" , 2202, __extension__ __PRETTY_FUNCTION__); })); |
| 2203 | |
| 2204 | byte = 0; |
| 2205 | status = _cairo_array_append (&font->output, &byte); |
| 2206 | assert (status == CAIRO_INT_STATUS_SUCCESS)((void) sizeof ((status == CAIRO_INT_STATUS_SUCCESS) ? 1 : 0) , __extension__ ({ if (status == CAIRO_INT_STATUS_SUCCESS) ; else __assert_fail ("status == CAIRO_INT_STATUS_SUCCESS", "/root/firefox-clang/gfx/cairo/cairo/src/cairo-cff-subset.c" , 2206, __extension__ __PRETTY_FUNCTION__); })); |
| 2207 | |
| 2208 | word = cpu_to_be16 (font->scaled_font_subset->num_glyphs); |
| 2209 | status = _cairo_array_append_multiple (&font->output, &word, 2); |
| 2210 | assert (status == CAIRO_INT_STATUS_SUCCESS)((void) sizeof ((status == CAIRO_INT_STATUS_SUCCESS) ? 1 : 0) , __extension__ ({ if (status == CAIRO_INT_STATUS_SUCCESS) ; else __assert_fail ("status == CAIRO_INT_STATUS_SUCCESS", "/root/firefox-clang/gfx/cairo/cairo/src/cairo-cff-subset.c" , 2210, __extension__ __PRETTY_FUNCTION__); })); |
| 2211 | } |
| 2212 | |
| 2213 | return CAIRO_STATUS_SUCCESS; |
| 2214 | } |
| 2215 | |
| 2216 | /* Winansi to CFF standard strings mapping for characters 128 to 255 */ |
| 2217 | static const int winansi_to_cff_std_string[] = { |
| 2218 | /* 128 */ |
| 2219 | 0, 0, 117, 101, 118, 121, 112, 113, |
| 2220 | 126, 122, 192, 107, 142, 0, 199, 0, |
| 2221 | /* 144 */ |
| 2222 | 0, 65, 8, 105, 119, 116, 111, 137, |
| 2223 | 127, 153, 221, 108, 148, 0, 228, 198, |
| 2224 | /* 160 */ |
| 2225 | 0, 96, 97, 98, 103, 100, 160, 102, |
| 2226 | 131, 170, 139, 106, 151, 0, 165, 128, |
| 2227 | /* 176 */ |
| 2228 | 161, 156, 164, 169, 125, 152, 115, 114, |
| 2229 | 133, 150, 143, 120, 158, 155, 163, 123, |
| 2230 | /* 192 */ |
| 2231 | 174, 171, 172, 176, 173, 175, 138, 177, |
| 2232 | 181, 178, 179, 180, 185, 182, 183, 184, |
| 2233 | /* 208 */ |
| 2234 | 154, 186, 190, 187, 188, 191, 189, 168, |
| 2235 | 141, 196, 193, 194, 195, 197, 157, 149, |
| 2236 | /* 224 */ |
| 2237 | 203, 200, 201, 205, 202, 204, 144, 206, |
| 2238 | 210, 207, 208, 209, 214, 211, 212, 213, |
| 2239 | /* 240 */ |
| 2240 | 167, 215, 219, 216, 217, 220, 218, 159, |
| 2241 | 147, 225, 222, 223, 224, 226, 162, 227, |
| 2242 | }; |
| 2243 | |
| 2244 | static int |
| 2245 | cairo_cff_font_get_sid_for_winansi_char (cairo_cff_font_t *font, int ch) |
| 2246 | { |
| 2247 | int sid; |
| 2248 | |
| 2249 | if (ch == 39) { |
| 2250 | sid = 104; |
| 2251 | |
| 2252 | } else if (ch == 96) { |
| 2253 | sid = 124; |
| 2254 | |
| 2255 | } else if (ch >= 32 && ch <= 126) { |
| 2256 | sid = ch - 31; |
| 2257 | |
| 2258 | } else if (ch == 128) { |
| 2259 | assert (font->euro_sid >= NUM_STD_STRINGS)((void) sizeof ((font->euro_sid >= 391) ? 1 : 0), __extension__ ({ if (font->euro_sid >= 391) ; else __assert_fail ("font->euro_sid >= NUM_STD_STRINGS" , "/root/firefox-clang/gfx/cairo/cairo/src/cairo-cff-subset.c" , 2259, __extension__ __PRETTY_FUNCTION__); })); |
| 2260 | sid = font->euro_sid; |
| 2261 | |
| 2262 | } else if (ch >= 128 && ch <= 255) { |
| 2263 | sid = winansi_to_cff_std_string[ch - 128]; |
| 2264 | |
| 2265 | } else { |
| 2266 | sid = 0; |
| 2267 | } |
| 2268 | |
| 2269 | return sid; |
| 2270 | } |
| 2271 | |
| 2272 | static cairo_status_t |
| 2273 | cairo_cff_font_write_type1_charset (cairo_cff_font_t *font) |
| 2274 | { |
| 2275 | unsigned char format = 0; |
| 2276 | unsigned int i; |
| 2277 | int ch, sid; |
| 2278 | cairo_status_t status; |
| 2279 | uint16_t sid_be16; |
| 2280 | |
| 2281 | cairo_cff_font_set_topdict_operator_to_cur_pos (font, CHARSET_OP0x000f); |
| 2282 | status = _cairo_array_append (&font->output, &format); |
| 2283 | if (unlikely (status)(__builtin_expect (!!(status), 0))) |
| 2284 | return status; |
| 2285 | |
| 2286 | for (i = 1; i < font->scaled_font_subset->num_glyphs; i++) { |
| 2287 | ch = font->scaled_font_subset->to_latin_char[i]; |
| 2288 | sid = cairo_cff_font_get_sid_for_winansi_char (font, ch); |
| 2289 | if (unlikely (status)(__builtin_expect (!!(status), 0))) |
| 2290 | return status; |
| 2291 | |
| 2292 | sid_be16 = cpu_to_be16(sid); |
| 2293 | status = _cairo_array_append_multiple (&font->output, &sid_be16, sizeof(sid_be16)); |
| 2294 | if (unlikely (status)(__builtin_expect (!!(status), 0))) |
| 2295 | return status; |
| 2296 | } |
| 2297 | |
| 2298 | return CAIRO_STATUS_SUCCESS; |
| 2299 | } |
| 2300 | |
| 2301 | static cairo_status_t |
| 2302 | cairo_cff_font_write_cid_charset (cairo_cff_font_t *font) |
| 2303 | { |
| 2304 | unsigned char byte; |
| 2305 | uint16_t word; |
| 2306 | cairo_status_t status; |
| 2307 | |
| 2308 | cairo_cff_font_set_topdict_operator_to_cur_pos (font, CHARSET_OP0x000f); |
| 2309 | status = _cairo_array_grow_by (&font->output, 5); |
| 2310 | if (unlikely (status)(__builtin_expect (!!(status), 0))) |
| 2311 | return status; |
| 2312 | |
| 2313 | byte = 2; |
| 2314 | status = _cairo_array_append (&font->output, &byte); |
| 2315 | assert (status == CAIRO_STATUS_SUCCESS)((void) sizeof ((status == CAIRO_STATUS_SUCCESS) ? 1 : 0), __extension__ ({ if (status == CAIRO_STATUS_SUCCESS) ; else __assert_fail ( "status == CAIRO_STATUS_SUCCESS", "/root/firefox-clang/gfx/cairo/cairo/src/cairo-cff-subset.c" , 2315, __extension__ __PRETTY_FUNCTION__); })); |
| 2316 | |
| 2317 | word = cpu_to_be16 (1); |
| 2318 | status = _cairo_array_append_multiple (&font->output, &word, 2); |
| 2319 | assert (status == CAIRO_STATUS_SUCCESS)((void) sizeof ((status == CAIRO_STATUS_SUCCESS) ? 1 : 0), __extension__ ({ if (status == CAIRO_STATUS_SUCCESS) ; else __assert_fail ( "status == CAIRO_STATUS_SUCCESS", "/root/firefox-clang/gfx/cairo/cairo/src/cairo-cff-subset.c" , 2319, __extension__ __PRETTY_FUNCTION__); })); |
| 2320 | |
| 2321 | word = cpu_to_be16 (font->scaled_font_subset->num_glyphs - 2); |
| 2322 | status = _cairo_array_append_multiple (&font->output, &word, 2); |
| 2323 | assert (status == CAIRO_STATUS_SUCCESS)((void) sizeof ((status == CAIRO_STATUS_SUCCESS) ? 1 : 0), __extension__ ({ if (status == CAIRO_STATUS_SUCCESS) ; else __assert_fail ( "status == CAIRO_STATUS_SUCCESS", "/root/firefox-clang/gfx/cairo/cairo/src/cairo-cff-subset.c" , 2323, __extension__ __PRETTY_FUNCTION__); })); |
| 2324 | |
| 2325 | return CAIRO_STATUS_SUCCESS; |
| 2326 | } |
| 2327 | |
| 2328 | static cairo_status_t |
| 2329 | cairo_cff_font_write_charstrings (cairo_cff_font_t *font) |
| 2330 | { |
| 2331 | cairo_cff_font_set_topdict_operator_to_cur_pos (font, CHARSTRINGS_OP0x0011); |
| 2332 | |
| 2333 | return cff_index_write (&font->charstrings_subset_index, &font->output); |
| 2334 | } |
| 2335 | |
| 2336 | static cairo_status_t |
| 2337 | cairo_cff_font_write_cid_fontdict (cairo_cff_font_t *font) |
| 2338 | { |
| 2339 | unsigned int i; |
| 2340 | cairo_int_status_t status; |
| 2341 | unsigned int offset_array; |
| 2342 | unsigned char *offset_array_ptr; |
| 2343 | int offset_base; |
| 2344 | uint16_t count; |
| 2345 | uint8_t offset_size = 4; |
| 2346 | |
| 2347 | cairo_cff_font_set_topdict_operator_to_cur_pos (font, FDARRAY_OP0x0c24); |
| 2348 | count = cpu_to_be16 (font->num_subset_fontdicts); |
| 2349 | status = _cairo_array_append_multiple (&font->output, &count, sizeof (uint16_t)); |
| 2350 | if (unlikely (status)(__builtin_expect (!!(status), 0))) |
| 2351 | return status; |
| 2352 | status = _cairo_array_append (&font->output, &offset_size); |
| 2353 | if (unlikely (status)(__builtin_expect (!!(status), 0))) |
| 2354 | return status; |
| 2355 | |
| 2356 | offset_array = _cairo_array_num_elements (&font->output); |
| 2357 | status = _cairo_array_allocate (&font->output, |
| 2358 | (font->num_subset_fontdicts + 1)*offset_size, |
| 2359 | (void **) &offset_array_ptr); |
| 2360 | if (unlikely (status)(__builtin_expect (!!(status), 0))) |
| 2361 | return status; |
| 2362 | offset_base = _cairo_array_num_elements (&font->output) - 1; |
| 2363 | put_unaligned_be32(1, offset_array_ptr); |
| 2364 | offset_array += sizeof(uint32_t); |
| 2365 | for (i = 0; i < font->num_subset_fontdicts; i++) { |
| 2366 | status = cff_dict_write (font->fd_dict[font->fd_subset_map[i]], |
| 2367 | &font->output); |
| 2368 | if (unlikely (status)(__builtin_expect (!!(status), 0))) |
| 2369 | return status; |
| 2370 | |
| 2371 | offset_array_ptr = _cairo_array_index (&font->output, offset_array); |
| 2372 | put_unaligned_be32 (_cairo_array_num_elements (&font->output) - offset_base, |
| 2373 | offset_array_ptr); |
| 2374 | offset_array += sizeof(uint32_t); |
| 2375 | } |
| 2376 | |
| 2377 | return CAIRO_STATUS_SUCCESS; |
| 2378 | } |
| 2379 | |
| 2380 | static cairo_status_t |
| 2381 | cairo_cff_font_write_private_dict (cairo_cff_font_t *font, |
| 2382 | int dict_num, |
| 2383 | cairo_hash_table_t *parent_dict, |
| 2384 | cairo_hash_table_t *private_dict) |
| 2385 | { |
| 2386 | int offset; |
| 2387 | int size; |
| 2388 | unsigned char buf[10]; |
| 2389 | unsigned char *buf_end; |
| 2390 | unsigned char *p; |
| 2391 | cairo_status_t status; |
| 2392 | |
| 2393 | /* Write private dict and update offset and size in top dict */ |
| 2394 | font->private_dict_offset[dict_num] = _cairo_array_num_elements (&font->output); |
| 2395 | status = cff_dict_write (private_dict, &font->output); |
| 2396 | if (unlikely (status)(__builtin_expect (!!(status), 0))) |
| 2397 | return status; |
| 2398 | |
| 2399 | size = _cairo_array_num_elements (&font->output) - font->private_dict_offset[dict_num]; |
| 2400 | /* private entry has two operands - size and offset */ |
| 2401 | buf_end = encode_integer_max (buf, size); |
| 2402 | buf_end = encode_integer_max (buf_end, font->private_dict_offset[dict_num]); |
| 2403 | offset = cff_dict_get_location (parent_dict, PRIVATE_OP0x0012, &size); |
| 2404 | assert (offset > 0)((void) sizeof ((offset > 0) ? 1 : 0), __extension__ ({ if (offset > 0) ; else __assert_fail ("offset > 0", "/root/firefox-clang/gfx/cairo/cairo/src/cairo-cff-subset.c" , 2404, __extension__ __PRETTY_FUNCTION__); })); |
| 2405 | p = _cairo_array_index (&font->output, offset); |
| 2406 | memcpy (p, buf, buf_end - buf); |
| 2407 | |
| 2408 | return CAIRO_STATUS_SUCCESS; |
| 2409 | } |
| 2410 | |
| 2411 | static cairo_status_t |
| 2412 | cairo_cff_font_write_local_sub (cairo_cff_font_t *font, |
| 2413 | int dict_num, |
| 2414 | cairo_hash_table_t *private_dict, |
| 2415 | cairo_array_t *local_sub_index, |
| 2416 | cairo_bool_t *local_subs_used) |
| 2417 | { |
| 2418 | int offset; |
| 2419 | int size; |
| 2420 | unsigned char buf[10]; |
| 2421 | unsigned char *buf_end; |
| 2422 | unsigned char *p; |
| 2423 | cairo_status_t status; |
| 2424 | unsigned int i; |
| 2425 | unsigned char return_op = TYPE2_return0x000b; |
| 2426 | |
| 2427 | if (_cairo_array_num_elements (local_sub_index) > 0) { |
| 2428 | /* Write local subroutines and update offset in private |
| 2429 | * dict. Local subroutines offset is relative to start of |
| 2430 | * private dict */ |
| 2431 | offset = _cairo_array_num_elements (&font->output) - font->private_dict_offset[dict_num]; |
| 2432 | buf_end = encode_integer_max (buf, offset); |
| 2433 | offset = cff_dict_get_location (private_dict, LOCAL_SUB_OP0x0013, &size); |
| 2434 | assert (offset > 0)((void) sizeof ((offset > 0) ? 1 : 0), __extension__ ({ if (offset > 0) ; else __assert_fail ("offset > 0", "/root/firefox-clang/gfx/cairo/cairo/src/cairo-cff-subset.c" , 2434, __extension__ __PRETTY_FUNCTION__); })); |
| 2435 | p = _cairo_array_index (&font->output, offset); |
| 2436 | memcpy (p, buf, buf_end - buf); |
| 2437 | |
| 2438 | /* poppler and fontforge don't like zero length subroutines so |
| 2439 | * we replace unused subroutines with a 'return' instruction. |
| 2440 | */ |
| 2441 | if (font->subset_subroutines) { |
| 2442 | for (i = 0; i < _cairo_array_num_elements (local_sub_index); i++) { |
| 2443 | if (! local_subs_used[i]) |
| 2444 | cff_index_set_object (local_sub_index, i, &return_op, 1); |
| 2445 | } |
| 2446 | } |
| 2447 | status = cff_index_write (local_sub_index, &font->output); |
| 2448 | if (unlikely (status)(__builtin_expect (!!(status), 0))) |
| 2449 | return status; |
| 2450 | } |
| 2451 | |
| 2452 | return CAIRO_STATUS_SUCCESS; |
| 2453 | } |
| 2454 | |
| 2455 | |
| 2456 | static cairo_status_t |
| 2457 | cairo_cff_font_write_cid_private_dict_and_local_sub (cairo_cff_font_t *font) |
| 2458 | { |
| 2459 | unsigned int i; |
| 2460 | cairo_int_status_t status; |
| 2461 | |
| 2462 | if (font->is_cid) { |
| 2463 | for (i = 0; i < font->num_subset_fontdicts; i++) { |
| 2464 | status = cairo_cff_font_write_private_dict ( |
| 2465 | font, |
| 2466 | i, |
| 2467 | font->fd_dict[font->fd_subset_map[i]], |
| 2468 | font->fd_private_dict[font->fd_subset_map[i]]); |
| 2469 | if (unlikely (status)(__builtin_expect (!!(status), 0))) |
| 2470 | return status; |
| 2471 | } |
| 2472 | |
| 2473 | for (i = 0; i < font->num_subset_fontdicts; i++) { |
| 2474 | status = cairo_cff_font_write_local_sub ( |
| 2475 | font, |
| 2476 | i, |
| 2477 | font->fd_private_dict[font->fd_subset_map[i]], |
| 2478 | &font->fd_local_sub_index[font->fd_subset_map[i]], |
| 2479 | font->fd_local_subs_used[font->fd_subset_map[i]]); |
| 2480 | if (unlikely (status)(__builtin_expect (!!(status), 0))) |
| 2481 | return status; |
| 2482 | } |
| 2483 | } else { |
| 2484 | status = cairo_cff_font_write_private_dict (font, |
| 2485 | 0, |
| 2486 | font->fd_dict[0], |
| 2487 | font->private_dict); |
| 2488 | if (unlikely (status)(__builtin_expect (!!(status), 0))) |
| 2489 | return status; |
| 2490 | |
| 2491 | status = cairo_cff_font_write_local_sub (font, |
| 2492 | 0, |
| 2493 | font->private_dict, |
| 2494 | &font->local_sub_index, |
| 2495 | font->local_subs_used); |
| 2496 | if (unlikely (status)(__builtin_expect (!!(status), 0))) |
| 2497 | return status; |
| 2498 | } |
| 2499 | |
| 2500 | return CAIRO_STATUS_SUCCESS; |
| 2501 | } |
| 2502 | |
| 2503 | static cairo_status_t |
| 2504 | cairo_cff_font_write_type1_private_dict_and_local_sub (cairo_cff_font_t *font) |
| 2505 | { |
| 2506 | cairo_int_status_t status; |
| 2507 | |
| 2508 | status = cairo_cff_font_write_private_dict (font, |
| 2509 | 0, |
| 2510 | font->top_dict, |
| 2511 | font->private_dict); |
| 2512 | if (unlikely (status)(__builtin_expect (!!(status), 0))) |
| 2513 | return status; |
| 2514 | |
| 2515 | status = cairo_cff_font_write_local_sub (font, |
| 2516 | 0, |
| 2517 | font->private_dict, |
| 2518 | &font->local_sub_index, |
| 2519 | font->local_subs_used); |
| 2520 | if (unlikely (status)(__builtin_expect (!!(status), 0))) |
| 2521 | return status; |
| 2522 | |
| 2523 | return CAIRO_STATUS_SUCCESS; |
| 2524 | } |
| 2525 | |
| 2526 | |
| 2527 | typedef cairo_status_t |
| 2528 | (*font_write_t) (cairo_cff_font_t *font); |
| 2529 | |
| 2530 | static const font_write_t font_write_cid_funcs[] = { |
| 2531 | cairo_cff_font_write_header, |
| 2532 | cairo_cff_font_write_name, |
| 2533 | cairo_cff_font_write_top_dict, |
| 2534 | cairo_cff_font_write_strings, |
| 2535 | cairo_cff_font_write_global_subrs, |
| 2536 | cairo_cff_font_write_cid_charset, |
| 2537 | cairo_cff_font_write_fdselect, |
| 2538 | cairo_cff_font_write_charstrings, |
| 2539 | cairo_cff_font_write_cid_fontdict, |
| 2540 | cairo_cff_font_write_cid_private_dict_and_local_sub, |
| 2541 | }; |
| 2542 | |
| 2543 | static const font_write_t font_write_type1_funcs[] = { |
| 2544 | cairo_cff_font_write_header, |
| 2545 | cairo_cff_font_write_name, |
| 2546 | cairo_cff_font_write_top_dict, |
| 2547 | cairo_cff_font_write_strings, |
| 2548 | cairo_cff_font_write_global_subrs, |
| 2549 | cairo_cff_font_write_encoding, |
| 2550 | cairo_cff_font_write_type1_charset, |
| 2551 | cairo_cff_font_write_charstrings, |
| 2552 | cairo_cff_font_write_type1_private_dict_and_local_sub, |
| 2553 | }; |
| 2554 | |
| 2555 | static cairo_status_t |
| 2556 | cairo_cff_font_write_subset (cairo_cff_font_t *font) |
| 2557 | { |
| 2558 | cairo_int_status_t status; |
| 2559 | unsigned int i; |
| 2560 | |
| 2561 | if (font->scaled_font_subset->is_latin) { |
| 2562 | for (i = 0; i < ARRAY_LENGTH (font_write_type1_funcs)((int) (sizeof (font_write_type1_funcs) / sizeof (font_write_type1_funcs [0]))); i++) { |
| 2563 | status = font_write_type1_funcs[i] (font); |
| 2564 | if (unlikely (status)(__builtin_expect (!!(status), 0))) |
| 2565 | return status; |
| 2566 | } |
| 2567 | } else { |
| 2568 | for (i = 0; i < ARRAY_LENGTH (font_write_cid_funcs)((int) (sizeof (font_write_cid_funcs) / sizeof (font_write_cid_funcs [0]))); i++) { |
| 2569 | status = font_write_cid_funcs[i] (font); |
| 2570 | if (unlikely (status)(__builtin_expect (!!(status), 0))) |
| 2571 | return status; |
| 2572 | } |
| 2573 | } |
| 2574 | |
| 2575 | return CAIRO_STATUS_SUCCESS; |
| 2576 | } |
| 2577 | |
| 2578 | static cairo_int_status_t |
| 2579 | cairo_cff_font_generate (cairo_cff_font_t *font, |
| 2580 | const char **data, |
| 2581 | unsigned long *length) |
| 2582 | { |
| 2583 | cairo_int_status_t status; |
| 2584 | |
| 2585 | status = cairo_cff_font_read_font (font); |
| 2586 | if (unlikely (status)(__builtin_expect (!!(status), 0))) |
| 2587 | return status; |
| 2588 | |
| 2589 | /* If the PS name is not found, create a CairoFont-x-y name. */ |
| 2590 | if (font->ps_name == NULL((void*)0)) { |
| 2591 | font->ps_name = _cairo_malloc (30)((30) != 0 ? malloc(30) : ((void*)0)); |
| 2592 | if (unlikely (font->ps_name == NULL)(__builtin_expect (!!(font->ps_name == ((void*)0)), 0))) |
| 2593 | return _cairo_error (CAIRO_STATUS_NO_MEMORY); |
| 2594 | |
| 2595 | snprintf(font->ps_name, 30, "CairoFont-%u-%u", |
| 2596 | font->scaled_font_subset->font_id, |
| 2597 | font->scaled_font_subset->subset_id); |
| 2598 | } |
| 2599 | |
| 2600 | status = cairo_cff_font_subset_font (font); |
| 2601 | if (unlikely (status)(__builtin_expect (!!(status), 0))) |
| 2602 | return status; |
| 2603 | |
| 2604 | status = cairo_cff_font_write_subset (font); |
| 2605 | if (unlikely (status)(__builtin_expect (!!(status), 0))) |
| 2606 | return status; |
| 2607 | |
| 2608 | |
| 2609 | *data = _cairo_array_index (&font->output, 0); |
| 2610 | *length = _cairo_array_num_elements (&font->output); |
| 2611 | |
| 2612 | return CAIRO_STATUS_SUCCESS; |
| 2613 | } |
| 2614 | |
| 2615 | static cairo_int_status_t |
| 2616 | cairo_cff_font_create_set_widths (cairo_cff_font_t *font) |
| 2617 | { |
| 2618 | unsigned long size; |
| 2619 | unsigned long long_entry_size; |
| 2620 | unsigned long short_entry_size; |
| 2621 | unsigned int i; |
| 2622 | tt_hhea_t hhea; |
| 2623 | int num_hmetrics; |
| 2624 | uint16_t short_entry; |
| 2625 | int glyph_index; |
| 2626 | cairo_int_status_t status; |
| 2627 | |
| 2628 | size = sizeof (tt_hhea_t); |
| 2629 | status = font->backend->load_truetype_table (font->scaled_font_subset->scaled_font, |
| 2630 | TT_TAG_hhea((int)((uint32_t)'h'<<24 | 'h'<<16 | 'e'<<8 | 'a')), 0, |
| 2631 | (unsigned char*) &hhea, &size); |
| 2632 | if (unlikely (status)(__builtin_expect (!!(status), 0))) |
| 2633 | return status; |
| 2634 | num_hmetrics = be16_to_cpu (hhea.num_hmetrics); |
| 2635 | |
| 2636 | for (i = 0; i < font->scaled_font_subset->num_glyphs; i++) { |
| 2637 | glyph_index = font->scaled_font_subset->glyphs[i]; |
| 2638 | long_entry_size = 2 * sizeof (int16_t); |
| 2639 | short_entry_size = sizeof (int16_t); |
| 2640 | if (glyph_index < num_hmetrics) { |
| 2641 | status = font->backend->load_truetype_table (font->scaled_font_subset->scaled_font, |
| 2642 | TT_TAG_hmtx((int)((uint32_t)'h'<<24 | 'm'<<16 | 't'<<8 | 'x')), |
| 2643 | glyph_index * long_entry_size, |
| 2644 | (unsigned char *) &short_entry, |
| 2645 | &short_entry_size); |
| 2646 | if (unlikely (status)(__builtin_expect (!!(status), 0))) |
| 2647 | return status; |
| 2648 | } |
| 2649 | else |
| 2650 | { |
| 2651 | status = font->backend->load_truetype_table (font->scaled_font_subset->scaled_font, |
| 2652 | TT_TAG_hmtx((int)((uint32_t)'h'<<24 | 'm'<<16 | 't'<<8 | 'x')), |
| 2653 | (num_hmetrics - 1) * long_entry_size, |
| 2654 | (unsigned char *) &short_entry, |
| 2655 | &short_entry_size); |
| 2656 | if (unlikely (status)(__builtin_expect (!!(status), 0))) |
| 2657 | return status; |
| 2658 | } |
| 2659 | font->widths[i] = be16_to_cpu (short_entry); |
| 2660 | } |
| 2661 | |
| 2662 | return CAIRO_STATUS_SUCCESS; |
| 2663 | } |
| 2664 | |
| 2665 | static cairo_bool_t |
| 2666 | check_fontdata_is_cff (const unsigned char *data, long length) |
| 2667 | { |
| 2668 | cff_header_t *header; |
| 2669 | |
| 2670 | if (length < (long)sizeof (cff_header_t)) |
| 2671 | return FALSE0; |
| 2672 | |
| 2673 | header = (cff_header_t *) data; |
| 2674 | if (header->major == 1 && |
| 2675 | header->minor == 0 && |
| 2676 | header->header_size == 4) |
| 2677 | { |
| 2678 | return TRUE1; |
| 2679 | } |
| 2680 | |
| 2681 | return FALSE0; |
| 2682 | } |
| 2683 | |
| 2684 | static cairo_int_status_t |
| 2685 | _cairo_cff_font_load_opentype_cff (cairo_cff_font_t *font) |
| 2686 | { |
| 2687 | const cairo_scaled_font_backend_t *backend = font->backend; |
| 2688 | cairo_status_t status; |
| 2689 | tt_head_t head; |
| 2690 | tt_hhea_t hhea; |
| 2691 | unsigned long size, data_length; |
| 2692 | |
| 2693 | if (!backend->load_truetype_table) |
| 2694 | return CAIRO_INT_STATUS_UNSUPPORTED; |
| 2695 | |
| 2696 | data_length = 0; |
| 2697 | status = backend->load_truetype_table (font->scaled_font_subset->scaled_font, |
| 2698 | TT_TAG_CFF((int)((uint32_t)'C'<<24 | 'F'<<16 | 'F'<<8 | ' ')), 0, NULL((void*)0), &data_length); |
| 2699 | if (status) |
| 2700 | return status; |
| 2701 | |
| 2702 | size = sizeof (tt_head_t); |
| 2703 | status = backend->load_truetype_table (font->scaled_font_subset->scaled_font, |
| 2704 | TT_TAG_head((int)((uint32_t)'h'<<24 | 'e'<<16 | 'a'<<8 | 'd')), 0, |
| 2705 | (unsigned char *) &head, &size); |
| 2706 | if (unlikely (status)(__builtin_expect (!!(status), 0))) |
| 2707 | return status; |
| 2708 | |
| 2709 | size = sizeof (tt_hhea_t); |
| 2710 | status = backend->load_truetype_table (font->scaled_font_subset->scaled_font, |
| 2711 | TT_TAG_hhea((int)((uint32_t)'h'<<24 | 'h'<<16 | 'e'<<8 | 'a')), 0, |
| 2712 | (unsigned char *) &hhea, &size); |
| 2713 | if (unlikely (status)(__builtin_expect (!!(status), 0))) |
| 2714 | return status; |
| 2715 | |
| 2716 | size = 0; |
| 2717 | status = backend->load_truetype_table (font->scaled_font_subset->scaled_font, |
| 2718 | TT_TAG_hmtx((int)((uint32_t)'h'<<24 | 'm'<<16 | 't'<<8 | 'x')), 0, NULL((void*)0), &size); |
| 2719 | if (unlikely (status)(__builtin_expect (!!(status), 0))) |
| 2720 | return status; |
| 2721 | |
| 2722 | font->x_min = (int16_t) be16_to_cpu (head.x_min); |
| 2723 | font->y_min = (int16_t) be16_to_cpu (head.y_min); |
| 2724 | font->x_max = (int16_t) be16_to_cpu (head.x_max); |
| 2725 | font->y_max = (int16_t) be16_to_cpu (head.y_max); |
| 2726 | font->ascent = (int16_t) be16_to_cpu (hhea.ascender); |
| 2727 | font->descent = (int16_t) be16_to_cpu (hhea.descender); |
| 2728 | font->units_per_em = (int16_t) be16_to_cpu (head.units_per_em); |
| 2729 | if (font->units_per_em == 0) |
| 2730 | font->units_per_em = 1000; |
| 2731 | |
| 2732 | font->font_name = NULL((void*)0); |
| 2733 | status = _cairo_truetype_read_font_name (font->scaled_font_subset->scaled_font, |
| 2734 | &font->ps_name, |
| 2735 | &font->font_name); |
| 2736 | if (_cairo_status_is_error (status)((status) != CAIRO_STATUS_SUCCESS && (status) < CAIRO_STATUS_LAST_STATUS )) |
| 2737 | return status; |
| 2738 | |
| 2739 | font->is_opentype = TRUE1; |
| 2740 | font->data_length = data_length; |
| 2741 | font->data = _cairo_malloc (data_length)((data_length) != 0 ? malloc(data_length) : ((void*)0)); |
| 2742 | if (unlikely (font->data == NULL)(__builtin_expect (!!(font->data == ((void*)0)), 0))) |
| 2743 | return _cairo_error (CAIRO_STATUS_NO_MEMORY); |
| 2744 | |
| 2745 | status = font->backend->load_truetype_table (font->scaled_font_subset->scaled_font, |
| 2746 | TT_TAG_CFF((int)((uint32_t)'C'<<24 | 'F'<<16 | 'F'<<8 | ' ')), 0, font->data, |
| 2747 | &font->data_length); |
| 2748 | if (unlikely (status)(__builtin_expect (!!(status), 0))) |
| 2749 | return status; |
| 2750 | |
| 2751 | if (!check_fontdata_is_cff (font->data, data_length)) |
| 2752 | return CAIRO_INT_STATUS_UNSUPPORTED; |
| 2753 | |
| 2754 | return CAIRO_STATUS_SUCCESS; |
| 2755 | } |
| 2756 | |
| 2757 | static cairo_int_status_t |
| 2758 | _cairo_cff_font_load_cff (cairo_cff_font_t *font) |
| 2759 | { |
| 2760 | const cairo_scaled_font_backend_t *backend = font->backend; |
| 2761 | cairo_status_t status; |
| 2762 | unsigned long data_length; |
| 2763 | |
| 2764 | if (!backend->load_type1_data) |
| 2765 | return CAIRO_INT_STATUS_UNSUPPORTED; |
| 2766 | |
| 2767 | data_length = 0; |
| 2768 | status = backend->load_type1_data (font->scaled_font_subset->scaled_font, |
| 2769 | 0, NULL((void*)0), &data_length); |
| 2770 | if (unlikely (status)(__builtin_expect (!!(status), 0))) |
| 2771 | return status; |
| 2772 | |
| 2773 | font->font_name = NULL((void*)0); |
| 2774 | font->is_opentype = FALSE0; |
| 2775 | font->data_length = data_length; |
| 2776 | font->data = _cairo_malloc (data_length)((data_length) != 0 ? malloc(data_length) : ((void*)0)); |
| 2777 | if (unlikely (font->data == NULL)(__builtin_expect (!!(font->data == ((void*)0)), 0))) |
| 2778 | return _cairo_error (CAIRO_STATUS_NO_MEMORY); |
| 2779 | |
| 2780 | status = font->backend->load_type1_data (font->scaled_font_subset->scaled_font, |
| 2781 | 0, font->data, &font->data_length); |
| 2782 | if (unlikely (status)(__builtin_expect (!!(status), 0))) |
| 2783 | return status; |
| 2784 | |
| 2785 | if (!check_fontdata_is_cff (font->data, data_length)) |
| 2786 | return CAIRO_INT_STATUS_UNSUPPORTED; |
| 2787 | |
| 2788 | return CAIRO_STATUS_SUCCESS; |
| 2789 | } |
| 2790 | |
| 2791 | static cairo_int_status_t |
| 2792 | _cairo_cff_font_create (cairo_scaled_font_subset_t *scaled_font_subset, |
| 2793 | cairo_cff_font_t **font_return, |
| 2794 | const char *subset_name) |
| 2795 | { |
| 2796 | const cairo_scaled_font_backend_t *backend; |
| 2797 | cairo_int_status_t status; |
| 2798 | cairo_bool_t is_synthetic; |
| 2799 | cairo_cff_font_t *font; |
| 2800 | |
| 2801 | backend = scaled_font_subset->scaled_font->backend; |
| 2802 | |
| 2803 | /* We need to use a fallback font if this font differs from the CFF outlines. */ |
| 2804 | if (backend->is_synthetic) { |
| 2805 | status = backend->is_synthetic (scaled_font_subset->scaled_font, &is_synthetic); |
| 2806 | if (unlikely (status)(__builtin_expect (!!(status), 0))) |
| 2807 | return status; |
| 2808 | |
| 2809 | if (is_synthetic) |
| 2810 | return CAIRO_INT_STATUS_UNSUPPORTED; |
| 2811 | } |
| 2812 | |
| 2813 | font = calloc (1, sizeof (cairo_cff_font_t)); |
| 2814 | if (unlikely (font == NULL)(__builtin_expect (!!(font == ((void*)0)), 0))) |
| 2815 | return _cairo_error (CAIRO_STATUS_NO_MEMORY); |
| 2816 | |
| 2817 | font->backend = backend; |
| 2818 | font->scaled_font_subset = scaled_font_subset; |
| 2819 | |
| 2820 | status = _cairo_cff_font_load_opentype_cff (font); |
| 2821 | if (status == CAIRO_INT_STATUS_UNSUPPORTED) |
| 2822 | status = _cairo_cff_font_load_cff (font); |
| 2823 | if (status) |
| 2824 | goto fail1; |
| 2825 | |
| 2826 | font->data_end = font->data + font->data_length; |
| 2827 | _cairo_array_init (&font->output, sizeof (char)); |
| 2828 | status = _cairo_array_grow_by (&font->output, 4096); |
| 2829 | if (unlikely (status)(__builtin_expect (!!(status), 0))) |
| 2830 | goto fail2; |
| 2831 | |
| 2832 | font->subset_font_name = strdup (subset_name); |
| 2833 | if (unlikely (font->subset_font_name == NULL)(__builtin_expect (!!(font->subset_font_name == ((void*)0) ), 0))) { |
| 2834 | status = _cairo_error (CAIRO_STATUS_NO_MEMORY); |
| 2835 | goto fail2; |
| 2836 | } |
| 2837 | |
| 2838 | font->widths = calloc (font->scaled_font_subset->num_glyphs, sizeof (int)); |
| 2839 | if (unlikely (font->widths == NULL)(__builtin_expect (!!(font->widths == ((void*)0)), 0))) { |
| 2840 | status = _cairo_error (CAIRO_STATUS_NO_MEMORY); |
| 2841 | goto fail3; |
| 2842 | } |
| 2843 | |
| 2844 | if (font->is_opentype) { |
| 2845 | status = cairo_cff_font_create_set_widths (font); |
| 2846 | if (unlikely (status)(__builtin_expect (!!(status), 0))) |
| 2847 | goto fail4; |
| 2848 | } |
| 2849 | |
| 2850 | status = cff_dict_init (&font->top_dict); |
| 2851 | if (unlikely (status)(__builtin_expect (!!(status), 0))) |
| 2852 | goto fail4; |
| 2853 | |
| 2854 | status = cff_dict_init (&font->private_dict); |
| 2855 | if (unlikely (status)(__builtin_expect (!!(status), 0))) |
| 2856 | goto fail5; |
| 2857 | |
| 2858 | cff_index_init (&font->strings_index); |
| 2859 | cff_index_init (&font->charstrings_index); |
| 2860 | cff_index_init (&font->global_sub_index); |
| 2861 | cff_index_init (&font->local_sub_index); |
| 2862 | cff_index_init (&font->charstrings_subset_index); |
| 2863 | cff_index_init (&font->strings_subset_index); |
| 2864 | font->euro_sid = 0; |
| 2865 | font->fdselect = NULL((void*)0); |
| 2866 | font->fd_dict = NULL((void*)0); |
| 2867 | font->fd_private_dict = NULL((void*)0); |
| 2868 | font->fd_local_sub_index = NULL((void*)0); |
| 2869 | font->fd_local_sub_bias = NULL((void*)0); |
| 2870 | font->fdselect_subset = NULL((void*)0); |
| 2871 | font->fd_subset_map = NULL((void*)0); |
| 2872 | font->private_dict_offset = NULL((void*)0); |
| 2873 | font->global_subs_used = NULL((void*)0); |
| 2874 | font->local_subs_used = NULL((void*)0); |
| 2875 | font->fd_local_subs_used = NULL((void*)0); |
| 2876 | |
| 2877 | *font_return = font; |
| 2878 | |
| 2879 | return CAIRO_STATUS_SUCCESS; |
| 2880 | |
| 2881 | fail5: |
| 2882 | _cairo_hash_table_destroy (font->top_dict); |
| 2883 | fail4: |
| 2884 | free (font->widths); |
| 2885 | fail3: |
| 2886 | free (font->subset_font_name); |
| 2887 | fail2: |
| 2888 | free (font->ps_name); |
| 2889 | _cairo_array_fini (&font->output); |
| 2890 | fail1: |
| 2891 | free (font->data); |
| 2892 | free (font->font_name); |
| 2893 | free (font); |
| 2894 | |
| 2895 | return status; |
| 2896 | } |
| 2897 | |
| 2898 | static void |
| 2899 | cairo_cff_font_destroy (cairo_cff_font_t *font) |
| 2900 | { |
| 2901 | unsigned int i; |
| 2902 | |
| 2903 | free (font->widths); |
| 2904 | free (font->font_name); |
| 2905 | free (font->ps_name); |
| 2906 | free (font->subset_font_name); |
| 2907 | _cairo_array_fini (&font->output); |
| 2908 | cff_dict_fini (font->top_dict); |
| 2909 | cff_dict_fini (font->private_dict); |
| 2910 | cff_index_fini (&font->strings_index); |
| 2911 | cff_index_fini (&font->charstrings_index); |
| 2912 | cff_index_fini (&font->global_sub_index); |
| 2913 | cff_index_fini (&font->local_sub_index); |
| 2914 | cff_index_fini (&font->charstrings_subset_index); |
| 2915 | cff_index_fini (&font->strings_subset_index); |
| 2916 | |
| 2917 | /* If we bailed out early as a result of an error some of the |
| 2918 | * following cairo_cff_font_t members may still be NULL */ |
| 2919 | if (font->fd_dict) { |
| 2920 | for (i = 0; i < font->num_fontdicts; i++) { |
| 2921 | if (font->fd_dict[i]) |
| 2922 | cff_dict_fini (font->fd_dict[i]); |
| 2923 | } |
| 2924 | free (font->fd_dict); |
| 2925 | } |
| 2926 | free (font->global_subs_used); |
| 2927 | free (font->local_subs_used); |
| 2928 | free (font->fd_subset_map); |
| 2929 | free (font->private_dict_offset); |
| 2930 | |
| 2931 | if (font->is_cid) { |
| 2932 | free (font->fdselect); |
| 2933 | free (font->fdselect_subset); |
| 2934 | if (font->fd_private_dict) { |
| 2935 | for (i = 0; i < font->num_fontdicts; i++) { |
| 2936 | if (font->fd_private_dict[i]) |
| 2937 | cff_dict_fini (font->fd_private_dict[i]); |
| 2938 | } |
| 2939 | free (font->fd_private_dict); |
| 2940 | } |
| 2941 | if (font->fd_local_sub_index) { |
| 2942 | for (i = 0; i < font->num_fontdicts; i++) |
| 2943 | cff_index_fini (&font->fd_local_sub_index[i]); |
| 2944 | free (font->fd_local_sub_index); |
| 2945 | } |
| 2946 | free (font->fd_local_sub_bias); |
| 2947 | if (font->fd_local_subs_used) { |
| 2948 | for (i = 0; i < font->num_fontdicts; i++) { |
| 2949 | free (font->fd_local_subs_used[i]); |
| 2950 | } |
| 2951 | free (font->fd_local_subs_used); |
| 2952 | } |
| 2953 | free (font->fd_default_width); |
| 2954 | free (font->fd_nominal_width); |
| 2955 | } |
| 2956 | |
| 2957 | free (font->data); |
| 2958 | |
| 2959 | free (font); |
| 2960 | } |
| 2961 | |
| 2962 | cairo_status_t |
| 2963 | _cairo_cff_subset_init (cairo_cff_subset_t *cff_subset, |
| 2964 | const char *subset_name, |
| 2965 | cairo_scaled_font_subset_t *font_subset) |
| 2966 | { |
| 2967 | cairo_cff_font_t *font = NULL((void*)0); /* squelch bogus compiler warning */ |
| 2968 | cairo_status_t status; |
| 2969 | const char *data = NULL((void*)0); /* squelch bogus compiler warning */ |
| 2970 | unsigned long length = 0; /* squelch bogus compiler warning */ |
| 2971 | unsigned int i; |
| 2972 | |
| 2973 | status = _cairo_cff_font_create (font_subset, &font, subset_name); |
| 2974 | if (unlikely (status)(__builtin_expect (!!(status), 0))) |
| 2975 | return status; |
| 2976 | |
| 2977 | status = cairo_cff_font_generate (font, &data, &length); |
| 2978 | if (unlikely (status)(__builtin_expect (!!(status), 0))) |
| 2979 | goto fail1; |
| 2980 | |
| 2981 | cff_subset->ps_name = strdup (font->ps_name); |
| 2982 | if (unlikely (cff_subset->ps_name == NULL)(__builtin_expect (!!(cff_subset->ps_name == ((void*)0)), 0 ))) { |
| 2983 | status = _cairo_error (CAIRO_STATUS_NO_MEMORY); |
| 2984 | goto fail1; |
| 2985 | } |
| 2986 | |
| 2987 | if (font->font_name) { |
| 2988 | cff_subset->family_name_utf8 = strdup (font->font_name); |
| 2989 | if (cff_subset->family_name_utf8 == NULL((void*)0)) { |
| 2990 | status = _cairo_error (CAIRO_STATUS_NO_MEMORY); |
| 2991 | goto fail2; |
| 2992 | } |
| 2993 | } else { |
| 2994 | cff_subset->family_name_utf8 = NULL((void*)0); |
| 2995 | } |
| 2996 | |
| 2997 | cff_subset->widths = calloc (sizeof (double), font->scaled_font_subset->num_glyphs); |
| 2998 | if (unlikely (cff_subset->widths == NULL)(__builtin_expect (!!(cff_subset->widths == ((void*)0)), 0 ))) { |
| 2999 | status = _cairo_error (CAIRO_STATUS_NO_MEMORY); |
| 3000 | goto fail3; |
| 3001 | } |
| 3002 | for (i = 0; i < font->scaled_font_subset->num_glyphs; i++) |
| 3003 | cff_subset->widths[i] = (double)font->widths[i]/font->units_per_em; |
| 3004 | |
| 3005 | cff_subset->x_min = (double)font->x_min/font->units_per_em; |
| 3006 | cff_subset->y_min = (double)font->y_min/font->units_per_em; |
| 3007 | cff_subset->x_max = (double)font->x_max/font->units_per_em; |
| 3008 | cff_subset->y_max = (double)font->y_max/font->units_per_em; |
| 3009 | cff_subset->ascent = (double)font->ascent/font->units_per_em; |
| 3010 | cff_subset->descent = (double)font->descent/font->units_per_em; |
| 3011 | |
| 3012 | cff_subset->data = _cairo_malloc (length)((length) != 0 ? malloc(length) : ((void*)0)); |
| 3013 | if (unlikely (cff_subset->data == NULL)(__builtin_expect (!!(cff_subset->data == ((void*)0)), 0))) { |
| 3014 | status = _cairo_error (CAIRO_STATUS_NO_MEMORY); |
| 3015 | goto fail4; |
| 3016 | } |
| 3017 | |
| 3018 | memcpy (cff_subset->data, data, length); |
| 3019 | cff_subset->data_length = length; |
| 3020 | |
| 3021 | cairo_cff_font_destroy (font); |
| 3022 | |
| 3023 | return CAIRO_STATUS_SUCCESS; |
| 3024 | |
| 3025 | fail4: |
| 3026 | free (cff_subset->widths); |
| 3027 | fail3: |
| 3028 | free (cff_subset->family_name_utf8); |
| 3029 | fail2: |
| 3030 | free (cff_subset->ps_name); |
| 3031 | fail1: |
| 3032 | cairo_cff_font_destroy (font); |
| 3033 | |
| 3034 | return status; |
| 3035 | } |
| 3036 | |
| 3037 | void |
| 3038 | _cairo_cff_subset_fini (cairo_cff_subset_t *subset) |
| 3039 | { |
| 3040 | free (subset->ps_name); |
| 3041 | free (subset->family_name_utf8); |
| 3042 | free (subset->widths); |
| 3043 | free (subset->data); |
| 3044 | } |
| 3045 | |
| 3046 | cairo_bool_t |
| 3047 | _cairo_cff_scaled_font_is_cid_cff (cairo_scaled_font_t *scaled_font) |
| 3048 | { |
| 3049 | const cairo_scaled_font_backend_t *backend; |
| 3050 | cairo_int_status_t status; |
| 3051 | unsigned char *data; |
| 3052 | unsigned long data_length; |
| 3053 | unsigned char *current_ptr; |
| 3054 | unsigned char *data_end; |
| 3055 | cff_header_t *header; |
| 3056 | cff_index_element_t *element; |
| 3057 | cairo_hash_table_t *top_dict; |
| 3058 | cairo_array_t index; |
| 3059 | int size; |
| 3060 | cairo_bool_t is_cid = FALSE0; |
| 3061 | |
| 3062 | backend = scaled_font->backend; |
| 3063 | data = NULL((void*)0); |
| 3064 | data_length = 0; |
| 3065 | status = CAIRO_INT_STATUS_UNSUPPORTED; |
| 3066 | /* Try to load an OpenType/CFF font */ |
| 3067 | if (backend->load_truetype_table && |
| 3068 | (status = backend->load_truetype_table (scaled_font, TT_TAG_CFF((int)((uint32_t)'C'<<24 | 'F'<<16 | 'F'<<8 | ' ')), |
| 3069 | 0, NULL((void*)0), &data_length)) == CAIRO_INT_STATUS_SUCCESS) |
| 3070 | { |
| 3071 | data = _cairo_malloc (data_length)((data_length) != 0 ? malloc(data_length) : ((void*)0)); |
| 3072 | if (unlikely (data == NULL)(__builtin_expect (!!(data == ((void*)0)), 0))) { |
| 3073 | status = _cairo_error (CAIRO_STATUS_NO_MEMORY); |
| 3074 | return FALSE0; |
| 3075 | } |
| 3076 | |
| 3077 | status = backend->load_truetype_table (scaled_font, TT_TAG_CFF((int)((uint32_t)'C'<<24 | 'F'<<16 | 'F'<<8 | ' ')), |
| 3078 | 0, data, &data_length); |
| 3079 | if (unlikely (status)(__builtin_expect (!!(status), 0))) |
| 3080 | goto fail1; |
| 3081 | } |
| 3082 | /* Try to load a CFF font */ |
| 3083 | if (status == CAIRO_INT_STATUS_UNSUPPORTED && |
| 3084 | backend->load_type1_data && |
| 3085 | (status = backend->load_type1_data (scaled_font, |
| 3086 | 0, NULL((void*)0), &data_length)) == CAIRO_INT_STATUS_SUCCESS) |
| 3087 | { |
| 3088 | data = _cairo_malloc (data_length)((data_length) != 0 ? malloc(data_length) : ((void*)0)); |
| 3089 | if (unlikely (data == NULL)(__builtin_expect (!!(data == ((void*)0)), 0))) { |
| 3090 | status = _cairo_error (CAIRO_STATUS_NO_MEMORY); |
| 3091 | return FALSE0; |
| 3092 | } |
| 3093 | |
| 3094 | status = backend->load_type1_data (scaled_font, 0, data, &data_length); |
| 3095 | if (unlikely (status)(__builtin_expect (!!(status), 0))) |
| 3096 | goto fail1; |
| 3097 | } |
| 3098 | if (status) |
| 3099 | goto fail1; |
| 3100 | |
| 3101 | /* Check if it looks like a CFF font */ |
| 3102 | if (!check_fontdata_is_cff (data, data_length)) |
| 3103 | goto fail1; |
| 3104 | |
| 3105 | data_end = data + data_length; |
| 3106 | |
| 3107 | /* skip header */ |
| 3108 | if (data_length < sizeof (cff_header_t)) |
| 3109 | goto fail1; |
| 3110 | |
| 3111 | header = (cff_header_t *) data; |
| 3112 | current_ptr = data + header->header_size; |
| 3113 | |
| 3114 | /* skip name */ |
| 3115 | cff_index_init (&index); |
| 3116 | status = cff_index_read (&index, ¤t_ptr, data_end); |
| 3117 | cff_index_fini (&index); |
| 3118 | |
| 3119 | if (status) |
| 3120 | goto fail1; |
| 3121 | |
| 3122 | /* read top dict */ |
| 3123 | cff_index_init (&index); |
| 3124 | status = cff_index_read (&index, ¤t_ptr, data_end); |
| 3125 | if (unlikely (status)(__builtin_expect (!!(status), 0))) |
| 3126 | goto fail2; |
| 3127 | |
| 3128 | status = cff_dict_init (&top_dict); |
| 3129 | if (unlikely (status)(__builtin_expect (!!(status), 0))) |
| 3130 | goto fail2; |
| 3131 | |
| 3132 | element = _cairo_array_index (&index, 0); |
| 3133 | if (element == NULL((void*)0)) |
| 3134 | goto fail3; |
| 3135 | status = cff_dict_read (top_dict, element->data, element->length); |
| 3136 | if (unlikely (status)(__builtin_expect (!!(status), 0))) |
| 3137 | goto fail3; |
| 3138 | |
| 3139 | /* check for ROS operator indicating a CID font */ |
| 3140 | if (cff_dict_get_operands (top_dict, ROS_OP0x0c1e, &size) != NULL((void*)0)) |
| 3141 | is_cid = TRUE1; |
| 3142 | |
| 3143 | fail3: |
| 3144 | cff_dict_fini (top_dict); |
| 3145 | |
| 3146 | fail2: |
| 3147 | cff_index_fini (&index); |
| 3148 | |
| 3149 | fail1: |
| 3150 | free (data); |
| 3151 | |
| 3152 | return is_cid; |
| 3153 | } |
| 3154 | |
| 3155 | static cairo_int_status_t |
| 3156 | _cairo_cff_font_fallback_create (cairo_scaled_font_subset_t *scaled_font_subset, |
| 3157 | cairo_cff_font_t **font_return, |
| 3158 | const char *subset_name) |
| 3159 | { |
| 3160 | cairo_status_t status; |
| 3161 | cairo_cff_font_t *font; |
| 3162 | |
| 3163 | font = calloc (1, sizeof (cairo_cff_font_t)); |
| 3164 | if (unlikely (font == NULL)(__builtin_expect (!!(font == ((void*)0)), 0))) |
| 3165 | return _cairo_error (CAIRO_STATUS_NO_MEMORY); |
| 3166 | |
| 3167 | font->backend = NULL((void*)0); |
| 3168 | font->scaled_font_subset = scaled_font_subset; |
| 3169 | |
| 3170 | _cairo_array_init (&font->output, sizeof (char)); |
| 3171 | status = _cairo_array_grow_by (&font->output, 4096); |
| 3172 | if (unlikely (status)(__builtin_expect (!!(status), 0))) |
| 3173 | goto fail1; |
| 3174 | |
| 3175 | font->subset_font_name = strdup (subset_name); |
| 3176 | if (unlikely (font->subset_font_name == NULL)(__builtin_expect (!!(font->subset_font_name == ((void*)0) ), 0))) { |
| 3177 | status = _cairo_error (CAIRO_STATUS_NO_MEMORY); |
| 3178 | goto fail1; |
| 3179 | } |
| 3180 | |
| 3181 | font->ps_name = strdup (subset_name); |
| 3182 | if (unlikely (font->ps_name == NULL)(__builtin_expect (!!(font->ps_name == ((void*)0)), 0))) { |
| 3183 | status = _cairo_error (CAIRO_STATUS_NO_MEMORY); |
| 3184 | goto fail2; |
| 3185 | } |
| 3186 | font->font_name = NULL((void*)0); |
| 3187 | |
| 3188 | font->x_min = 0; |
| 3189 | font->y_min = 0; |
| 3190 | font->x_max = 0; |
| 3191 | font->y_max = 0; |
| 3192 | font->ascent = 0; |
| 3193 | font->descent = 0; |
| 3194 | |
| 3195 | font->widths = calloc (font->scaled_font_subset->num_glyphs, sizeof (int)); |
| 3196 | if (unlikely (font->widths == NULL)(__builtin_expect (!!(font->widths == ((void*)0)), 0))) { |
| 3197 | status = _cairo_error (CAIRO_STATUS_NO_MEMORY); |
| 3198 | goto fail3; |
| 3199 | } |
| 3200 | |
| 3201 | font->data_length = 0; |
| 3202 | font->data = NULL((void*)0); |
| 3203 | font->data_end = NULL((void*)0); |
| 3204 | |
| 3205 | status = cff_dict_init (&font->top_dict); |
| 3206 | if (unlikely (status)(__builtin_expect (!!(status), 0))) |
| 3207 | goto fail4; |
| 3208 | |
| 3209 | status = cff_dict_init (&font->private_dict); |
| 3210 | if (unlikely (status)(__builtin_expect (!!(status), 0))) |
| 3211 | goto fail5; |
| 3212 | |
| 3213 | cff_index_init (&font->strings_index); |
| 3214 | cff_index_init (&font->charstrings_index); |
| 3215 | cff_index_init (&font->global_sub_index); |
| 3216 | cff_index_init (&font->local_sub_index); |
| 3217 | cff_index_init (&font->charstrings_subset_index); |
| 3218 | cff_index_init (&font->strings_subset_index); |
| 3219 | font->global_subs_used = NULL((void*)0); |
| 3220 | font->local_subs_used = NULL((void*)0); |
| 3221 | font->subset_subroutines = FALSE0; |
| 3222 | font->fdselect = NULL((void*)0); |
| 3223 | font->fd_dict = NULL((void*)0); |
| 3224 | font->fd_private_dict = NULL((void*)0); |
| 3225 | font->fd_local_sub_index = NULL((void*)0); |
| 3226 | font->fdselect_subset = NULL((void*)0); |
| 3227 | font->fd_subset_map = NULL((void*)0); |
| 3228 | font->private_dict_offset = NULL((void*)0); |
| 3229 | |
| 3230 | *font_return = font; |
| 3231 | |
| 3232 | return CAIRO_STATUS_SUCCESS; |
| 3233 | |
| 3234 | fail5: |
| 3235 | _cairo_hash_table_destroy (font->top_dict); |
| 3236 | fail4: |
| 3237 | free (font->widths); |
| 3238 | fail3: |
| 3239 | free (font->font_name); |
| 3240 | free (font->ps_name); |
| 3241 | fail2: |
| 3242 | free (font->subset_font_name); |
| 3243 | fail1: |
| 3244 | _cairo_array_fini (&font->output); |
| 3245 | free (font); |
| 3246 | return status; |
| 3247 | } |
| 3248 | |
| 3249 | static cairo_int_status_t |
| 3250 | cairo_cff_font_fallback_generate (cairo_cff_font_t *font, |
| 3251 | cairo_type2_charstrings_t *type2_subset, |
| 3252 | const char **data, |
| 3253 | unsigned long *length) |
| 3254 | { |
| 3255 | cairo_int_status_t status; |
| 3256 | cff_header_t header; |
| 3257 | cairo_array_t *charstring; |
| 3258 | unsigned char buf[40]; |
| 3259 | unsigned char *end_buf, *end_buf2; |
| 3260 | unsigned int i; |
| 3261 | int sid; |
| 3262 | |
| 3263 | /* Create header */ |
| 3264 | header.major = 1; |
| 3265 | header.minor = 0; |
| 3266 | header.header_size = 4; |
| 3267 | header.offset_size = 4; |
| 3268 | font->header = &header; |
| 3269 | |
| 3270 | /* Create Top Dict */ |
| 3271 | font->is_cid = FALSE0; |
| 3272 | |
| 3273 | snprintf((char*)buf, sizeof(buf), "CairoFont-%u-%u", |
| 3274 | font->scaled_font_subset->font_id, |
| 3275 | font->scaled_font_subset->subset_id); |
| 3276 | sid = NUM_STD_STRINGS391 + _cairo_array_num_elements (&font->strings_subset_index); |
| 3277 | status = cff_index_append_copy (&font->strings_subset_index, |
| 3278 | (unsigned char *)buf, |
| 3279 | strlen((char*)buf)); |
| 3280 | if (unlikely (status)(__builtin_expect (!!(status), 0))) |
| 3281 | return status; |
| 3282 | |
| 3283 | end_buf = encode_integer (buf, sid); |
| 3284 | status = cff_dict_set_operands (font->top_dict, FULLNAME_OP0x0002, |
| 3285 | buf, end_buf - buf); |
| 3286 | if (unlikely (status)(__builtin_expect (!!(status), 0))) |
| 3287 | return status; |
| 3288 | |
| 3289 | status = cff_dict_set_operands (font->top_dict, FAMILYNAME_OP0x0003, |
| 3290 | buf, end_buf - buf); |
| 3291 | if (unlikely (status)(__builtin_expect (!!(status), 0))) |
| 3292 | return status; |
| 3293 | |
| 3294 | end_buf = encode_integer (buf, type2_subset->x_min); |
| 3295 | end_buf = encode_integer (end_buf, type2_subset->y_min); |
| 3296 | end_buf = encode_integer (end_buf, type2_subset->x_max); |
| 3297 | end_buf = encode_integer (end_buf, type2_subset->y_max); |
| 3298 | status = cff_dict_set_operands (font->top_dict, |
| 3299 | FONTBBOX_OP0x0005, buf, end_buf - buf); |
| 3300 | if (unlikely (status)(__builtin_expect (!!(status), 0))) |
| 3301 | return status; |
| 3302 | |
| 3303 | end_buf = encode_integer_max (buf, 0); |
| 3304 | status = cff_dict_set_operands (font->top_dict, |
| 3305 | CHARSTRINGS_OP0x0011, buf, end_buf - buf); |
| 3306 | if (unlikely (status)(__builtin_expect (!!(status), 0))) |
| 3307 | return status; |
| 3308 | |
| 3309 | |
| 3310 | if (font->scaled_font_subset->is_latin) { |
| 3311 | status = cff_dict_set_operands (font->top_dict, |
| 3312 | ENCODING_OP0x0010, buf, end_buf - buf); |
| 3313 | if (unlikely (status)(__builtin_expect (!!(status), 0))) |
| 3314 | return status; |
| 3315 | |
| 3316 | /* Private has two operands - size and offset */ |
| 3317 | end_buf2 = encode_integer_max (end_buf, 0); |
| 3318 | cff_dict_set_operands (font->top_dict, PRIVATE_OP0x0012, buf, end_buf2 - buf); |
| 3319 | if (unlikely (status)(__builtin_expect (!!(status), 0))) |
| 3320 | return status; |
| 3321 | |
| 3322 | } else { |
| 3323 | status = cff_dict_set_operands (font->top_dict, |
| 3324 | FDSELECT_OP0x0c25, buf, end_buf - buf); |
| 3325 | if (unlikely (status)(__builtin_expect (!!(status), 0))) |
| 3326 | return status; |
| 3327 | |
| 3328 | status = cff_dict_set_operands (font->top_dict, |
| 3329 | FDARRAY_OP0x0c24, buf, end_buf - buf); |
| 3330 | if (unlikely (status)(__builtin_expect (!!(status), 0))) |
| 3331 | return status; |
| 3332 | } |
| 3333 | |
| 3334 | status = cff_dict_set_operands (font->top_dict, |
| 3335 | CHARSET_OP0x000f, buf, end_buf - buf); |
| 3336 | if (unlikely (status)(__builtin_expect (!!(status), 0))) |
| 3337 | return status; |
| 3338 | |
| 3339 | if (!font->scaled_font_subset->is_latin) { |
| 3340 | status = cairo_cff_font_set_ros_strings (font); |
| 3341 | if (unlikely (status)(__builtin_expect (!!(status), 0))) |
| 3342 | return status; |
| 3343 | |
| 3344 | /* Create CID FD dictionary */ |
| 3345 | status = cairo_cff_font_create_cid_fontdict (font); |
| 3346 | if (unlikely (status)(__builtin_expect (!!(status), 0))) |
| 3347 | return status; |
| 3348 | } else { |
| 3349 | font->private_dict_offset = _cairo_malloc (sizeof (int))((sizeof (int)) != 0 ? malloc(sizeof (int)) : ((void*)0)); |
| 3350 | if (unlikely (font->private_dict_offset == NULL)(__builtin_expect (!!(font->private_dict_offset == ((void* )0)), 0))) |
| 3351 | return _cairo_error (CAIRO_STATUS_NO_MEMORY); |
| 3352 | } |
| 3353 | |
| 3354 | /* Create charstrings */ |
| 3355 | for (i = 0; i < font->scaled_font_subset->num_glyphs; i++) { |
| 3356 | charstring = _cairo_array_index(&type2_subset->charstrings, i); |
| 3357 | |
| 3358 | status = cff_index_append (&font->charstrings_subset_index, |
| 3359 | _cairo_array_index (charstring, 0), |
| 3360 | _cairo_array_num_elements (charstring)); |
| 3361 | |
| 3362 | if (unlikely (status)(__builtin_expect (!!(status), 0))) |
| 3363 | return status; |
| 3364 | } |
| 3365 | |
| 3366 | if (font->scaled_font_subset->is_latin) |
| 3367 | status = cairo_cff_font_add_euro_charset_string (font); |
| 3368 | |
| 3369 | status = cairo_cff_font_write_subset (font); |
| 3370 | if (unlikely (status)(__builtin_expect (!!(status), 0))) |
| 3371 | return status; |
| 3372 | |
| 3373 | *data = _cairo_array_index (&font->output, 0); |
| 3374 | *length = _cairo_array_num_elements (&font->output); |
| 3375 | |
| 3376 | return CAIRO_STATUS_SUCCESS; |
| 3377 | } |
| 3378 | |
| 3379 | cairo_status_t |
| 3380 | _cairo_cff_fallback_init (cairo_cff_subset_t *cff_subset, |
| 3381 | const char *subset_name, |
| 3382 | cairo_scaled_font_subset_t *font_subset) |
| 3383 | { |
| 3384 | cairo_cff_font_t *font = NULL((void*)0); /* squelch bogus compiler warning */ |
| 3385 | cairo_status_t status; |
| 3386 | const char *data = NULL((void*)0); /* squelch bogus compiler warning */ |
| 3387 | unsigned long length = 0; /* squelch bogus compiler warning */ |
| 3388 | unsigned int i; |
| 3389 | cairo_type2_charstrings_t type2_subset; |
| 3390 | |
| 3391 | status = _cairo_cff_font_fallback_create (font_subset, &font, subset_name); |
| 3392 | if (unlikely (status)(__builtin_expect (!!(status), 0))) |
| 3393 | return status; |
| 3394 | |
| 3395 | status = _cairo_type2_charstrings_init (&type2_subset, font_subset); |
| 3396 | if (unlikely (status)(__builtin_expect (!!(status), 0))) |
| 3397 | goto fail1; |
| 3398 | |
| 3399 | status = cairo_cff_font_fallback_generate (font, &type2_subset, &data, &length); |
| 3400 | if (unlikely (status)(__builtin_expect (!!(status), 0))) |
| 3401 | goto fail2; |
| 3402 | |
| 3403 | cff_subset->family_name_utf8 = NULL((void*)0); |
| 3404 | cff_subset->ps_name = strdup (font->ps_name); |
| 3405 | if (unlikely (cff_subset->ps_name == NULL)(__builtin_expect (!!(cff_subset->ps_name == ((void*)0)), 0 ))) { |
| 3406 | status = _cairo_error (CAIRO_STATUS_NO_MEMORY); |
| 3407 | goto fail2; |
| 3408 | } |
| 3409 | |
| 3410 | cff_subset->widths = calloc (sizeof (double), font->scaled_font_subset->num_glyphs); |
| 3411 | if (unlikely (cff_subset->widths == NULL)(__builtin_expect (!!(cff_subset->widths == ((void*)0)), 0 ))) { |
| 3412 | status = _cairo_error (CAIRO_STATUS_NO_MEMORY); |
| 3413 | goto fail3; |
| 3414 | } |
| 3415 | |
| 3416 | for (i = 0; i < font->scaled_font_subset->num_glyphs; i++) |
| 3417 | cff_subset->widths[i] = (double)type2_subset.widths[i]/1000; |
| 3418 | |
| 3419 | cff_subset->x_min = (double)type2_subset.x_min/1000; |
| 3420 | cff_subset->y_min = (double)type2_subset.y_min/1000; |
| 3421 | cff_subset->x_max = (double)type2_subset.x_max/1000; |
| 3422 | cff_subset->y_max = (double)type2_subset.y_max/1000; |
| 3423 | cff_subset->ascent = (double)type2_subset.y_max/1000; |
| 3424 | cff_subset->descent = (double)type2_subset.y_min/1000; |
| 3425 | |
| 3426 | cff_subset->data = _cairo_malloc (length)((length) != 0 ? malloc(length) : ((void*)0)); |
| 3427 | if (unlikely (cff_subset->data == NULL)(__builtin_expect (!!(cff_subset->data == ((void*)0)), 0))) { |
| 3428 | status = _cairo_error (CAIRO_STATUS_NO_MEMORY); |
| 3429 | goto fail4; |
| 3430 | } |
| 3431 | |
| 3432 | memcpy (cff_subset->data, data, length); |
| 3433 | cff_subset->data_length = length; |
| 3434 | |
| 3435 | _cairo_type2_charstrings_fini (&type2_subset); |
| 3436 | cairo_cff_font_destroy (font); |
| 3437 | |
| 3438 | return CAIRO_STATUS_SUCCESS; |
| 3439 | |
| 3440 | fail4: |
| 3441 | free (cff_subset->widths); |
| 3442 | fail3: |
| 3443 | free (cff_subset->ps_name); |
| 3444 | fail2: |
| 3445 | _cairo_type2_charstrings_fini (&type2_subset); |
| 3446 | fail1: |
| 3447 | cairo_cff_font_destroy (font); |
| 3448 | |
| 3449 | return status; |
| 3450 | } |
| 3451 | |
| 3452 | void |
| 3453 | _cairo_cff_fallback_fini (cairo_cff_subset_t *subset) |
| 3454 | { |
| 3455 | free (subset->ps_name); |
| 3456 | free (subset->widths); |
| 3457 | free (subset->data); |
| 3458 | } |
| 3459 | |
| 3460 | #endif /* CAIRO_HAS_FONT_SUBSET */ |