Hash :
9a4ba593
        
        Author :
  
        
        Date :
2025-08-15T06:18:13
        
      
internal change PiperOrigin-RevId: 795452145
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 774 775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794 795 796 797 798 799 800 801 802 803 804 805 806 807 808 809 810 811 812 813 814 815 816 817 818 819 820 821 822 823 824 825 826 827 828 829 830 831 832 833 834 835 836 837 838 839 840 841 842 843 844 845 846 847 848 849 850 851 852 853 854 855 856 857 858 859 860 861 862 863 864 865 866 867 868 869 870 871 872 873 874 875 876 877 878 879 880 881 882 883 884 885 886 887 888 889 890 891 892 893 894 895 896 897 898 899 900 901 902 903 904 905 906 907 908 909 910 911 912 913 914 915 916 917 918 919 920 921 922 923 924 925 926 927 928 929 930 931 932 933 934 935 936 937 938 939 940 941 942 943 944 945 946 947 948 949 950 951 952 953 954 955 956 957 958 959 960 961 962 963 964 965 966 967 968 969 970 971 972 973 974 975 976 977 978 979 980 981 982 983 984 985 986 987 988 989 990 991 992 993 994 995 996 997 998 999 1000 1001 1002 1003 1004 1005 1006 1007 1008 1009 1010 1011 1012 1013 1014 1015 1016 1017 1018 1019 1020 1021 1022 1023 1024 1025 1026 1027 1028 1029 1030 1031 1032 1033 1034 1035 1036 1037 1038 1039 1040 1041 1042 1043 1044 1045 1046 1047 1048 1049 1050 1051 1052 1053 1054 1055 1056 1057 1058 1059 1060 1061 1062 1063 1064 1065 1066 1067 1068 1069 1070 1071 1072 1073 1074 1075 1076 1077 1078 1079 1080 1081 1082 1083 1084 1085 1086 1087 1088 1089 1090 1091 1092 1093 1094 1095 1096 1097 1098 1099 1100 1101 1102 1103 1104 1105 1106 1107 1108 1109 1110 1111 1112 1113 1114 1115 1116 1117 1118 1119 1120 1121 1122 1123 1124 1125 1126 1127 1128 1129 1130 1131 1132 1133 1134 1135 1136 1137 1138 1139 1140 1141 1142 1143 1144 1145 1146 1147 1148 1149 1150 1151 1152 1153 1154 1155 1156 1157 1158 1159 1160 1161 1162 1163 1164 1165 1166 1167 1168 1169 1170 1171 1172 1173 1174 1175 1176 1177 1178 1179 1180 1181 1182 1183 1184 1185 1186 1187 1188 1189 1190 1191 1192 1193 1194 1195 1196 1197 1198 1199 1200 1201 1202 1203 1204 1205 1206 1207 1208 1209 1210 1211 1212 1213 1214 1215 1216 1217 1218 1219 1220 1221 1222 1223 1224 1225 1226 1227 1228 1229 1230 1231 1232 1233 1234 1235 1236 1237 1238 1239 1240 1241 1242 1243 1244 1245 1246 1247 1248 1249 1250 1251 1252 1253 1254 1255 1256 1257 1258 1259 1260 1261 1262 1263 1264 1265 1266 1267 1268 1269 1270 1271 1272 1273 1274 1275 1276 1277 1278 1279 1280 1281 1282 1283 1284 1285 1286 1287 1288 1289 1290 1291 1292 1293 1294 1295 1296 1297 1298 1299 1300 1301 1302 1303 1304 1305 1306 1307 1308 1309 1310 1311 1312 1313 1314 1315 1316 1317 1318 1319 1320 1321 1322 1323 1324 1325 1326 1327 1328 1329 1330 1331 1332 1333 1334 1335 1336 1337 1338 1339 1340 1341 1342 1343 1344 1345 1346 1347 1348 1349 1350 1351 1352 1353 1354 1355 1356 1357 1358 1359 1360 1361 1362 1363 1364 1365 1366 1367 1368 1369 1370 1371 1372 1373 1374 1375 1376 1377 1378 1379 1380 1381 1382 1383 1384 1385 1386 1387 1388 1389 1390 1391 1392 1393 1394 1395 1396 1397 1398 1399 1400 1401 1402 1403 1404 1405 1406 1407 1408 1409 1410 1411 1412 1413 1414 1415 1416 1417 1418 1419 1420 1421 1422 1423 1424 1425 1426 1427 1428 1429 1430 1431 1432 1433 1434 1435 1436 1437 1438 1439 1440 1441 1442 1443 1444 1445 1446 1447 1448 1449 1450 1451 1452 1453 1454 1455 1456 1457 1458 1459 1460 1461 1462 1463 1464 1465 1466 1467 1468 1469 1470 1471 1472 1473 1474 1475 1476 1477 1478 1479 1480 1481 1482 1483 1484 1485 1486 1487 1488 1489 1490 1491 1492 1493 1494 1495 1496 1497 1498 1499 1500 1501 1502 1503 1504 1505 1506 1507 1508 1509 1510 1511 1512 1513 1514 1515 1516 1517 1518 1519 1520 1521 1522 1523 1524 1525 1526 1527 1528 1529 1530 1531 1532 1533 1534 1535 1536 1537 1538 1539 1540 1541 1542 1543 1544 1545 1546 1547 1548 1549 1550 1551 1552 1553 1554 1555 1556 1557 1558 1559
/* Copyright 2014 Google Inc. All Rights Reserved.
   Distributed under MIT license.
   See file LICENSE for detail or copy at https://opensource.org/licenses/MIT
*/
/* Command line interface for Brotli library. */
/* Mute strerror/strcpy warnings. */
#include <brotli/shared_dictionary.h>
#if !defined(_CRT_SECURE_NO_WARNINGS)
#define _CRT_SECURE_NO_WARNINGS
#endif
#include <errno.h>
#include <fcntl.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <time.h>
#include <brotli/types.h>
#include "../common/constants.h"
#include "../common/version.h"
#include <brotli/decode.h>
#include <brotli/encode.h>
#if defined(_WIN32)
#include <io.h>
#include <share.h>
#include <sys/utime.h>
#define MAKE_BINARY(FILENO) (_setmode((FILENO), _O_BINARY), (FILENO))
#if !defined(__MINGW32__)
#define STDIN_FILENO _fileno(stdin)
#define STDOUT_FILENO _fileno(stdout)
#define S_IRUSR S_IREAD
#define S_IWUSR S_IWRITE
#endif
#define fdopen _fdopen
#define isatty _isatty
#define unlink _unlink
#define utimbuf _utimbuf
#define utime _utime
#define fopen ms_fopen
#define open ms_open
#define chmod(F, P) (0)
#define chown(F, O, G) (0)
#if defined(_MSC_VER) && (_MSC_VER >= 1400)
#define fseek _fseeki64
#define ftell _ftelli64
#endif
static FILE* ms_fopen(const char* filename, const char* mode) {
  FILE* result = 0;
  fopen_s(&result, filename, mode);
  return result;
}
static int ms_open(const char* filename, int oflag, int pmode) {
  int result = -1;
  _sopen_s(&result, filename, oflag | O_BINARY, _SH_DENYNO, pmode);
  return result;
}
#else  /* !defined(_WIN32) */
#include <unistd.h>
#include <utime.h>
#define MAKE_BINARY(FILENO) (FILENO)
#endif  /* defined(_WIN32) */
#if defined(_POSIX_C_SOURCE) && (_POSIX_C_SOURCE >= 200809L)
#define HAVE_UTIMENSAT 1
#elif defined(_ATFILE_SOURCE)
#define HAVE_UTIMENSAT 1
#else
#define HAVE_UTIMENSAT 0
#endif
#if HAVE_UTIMENSAT
#if defined(__APPLE__)
#define ATIME_NSEC(S) ((S)->st_atimespec.tv_nsec)
#define MTIME_NSEC(S) ((S)->st_mtimespec.tv_nsec)
#else  /* defined(__APPLE__) */
#define ATIME_NSEC(S) ((S)->st_atim.tv_nsec)
#define MTIME_NSEC(S) ((S)->st_mtim.tv_nsec)
#endif
#endif  /* HAVE_UTIMENSAT */
typedef enum {
  COMMAND_COMPRESS,
  COMMAND_DECOMPRESS,
  COMMAND_HELP,
  COMMAND_INVALID,
  COMMAND_TEST_INTEGRITY,
  COMMAND_NOOP,
  COMMAND_VERSION
} Command;
typedef enum {
  COMMENT_INIT,
  COMMENT_READ,
  COMMENT_OK,
  COMMENT_BAD,
} CommentState;
#define DEFAULT_LGWIN 24
#define DEFAULT_SUFFIX ".br"
#define MAX_OPTIONS 24
#define MAX_COMMENT_LEN 80
typedef struct {
  /* Parameters */
  int quality;
  int lgwin;
  int verbosity;
  BROTLI_BOOL force_overwrite;
  BROTLI_BOOL junk_source;
  BROTLI_BOOL reject_uncompressible;
  BROTLI_BOOL copy_stat;
  BROTLI_BOOL write_to_stdout;
  BROTLI_BOOL test_integrity;
  BROTLI_BOOL decompress;
  BROTLI_BOOL large_window;
  BROTLI_BOOL allow_concatenated;
  const char* output_path;
  const char* dictionary_path;
  const char* suffix;
  uint8_t comment[MAX_COMMENT_LEN];
  size_t comment_len;
  size_t comment_pos;
  CommentState comment_state;
  int not_input_indices[MAX_OPTIONS];
  size_t longest_path_len;
  size_t input_count;
  /* Inner state */
  int argc;
  char** argv;
  uint8_t* dictionary;
  size_t dictionary_size;
  BrotliEncoderPreparedDictionary* prepared_dictionary;
  BrotliDecoderState* decoder;
  char* modified_path;  /* Storage for path with appended / cut suffix */
  int iterator;
  int ignore;
  BROTLI_BOOL iterator_error;
  uint8_t* buffer;
  uint8_t* input;
  uint8_t* output;
  const char* current_input_path;
  const char* current_output_path;
  int64_t input_file_length;  /* -1, if impossible to calculate */
  FILE* fin;
  FILE* fout;
  /* I/O buffers */
  size_t available_in;
  const uint8_t* next_in;
  size_t available_out;
  uint8_t* next_out;
  /* Reporting */
  /* size_t would be large enough,
     until 4GiB+ files are compressed / decompressed on 32-bit CPUs. */
  size_t total_in;
  size_t total_out;
  clock_t start_time;
  clock_t end_time;
} Context;
/* Parse base 64 encoded string to buffer. Not performance-centric.
   |out_len| as input is buffer size; |out_len| as output is decoded length.
   Returns BROTLI_FALSE if either input is not (relaxed) base 64 conformant,
   or output does not fit buffer. */
static BROTLI_BOOL ParseBase64(const char* str, uint8_t* out, size_t* out_len) {
  size_t in_len = strlen(str);
  size_t max_out_len = *out_len;
  size_t i;
  size_t bit_count = 0;
  uint32_t bits = 0;
  size_t padding_count = 0;
  size_t octet_count = 0;
  for (i = 0; i < in_len; ++i) {
    char c = str[i];
    int sextet = 0;
    if (c == 9 || c == 10 || c == 13 || c == ' ') {
      continue;
    }
    if (c == '=') {
      padding_count++;
      continue;
    }
    if (padding_count) return BROTLI_FALSE;
    if (c == '+' || c == '-') {
      sextet = 62;
    } else if (c == '/' || c == '_') {
      sextet = 63;
    } else if (c >= 'A' && c <= 'Z') {
      sextet = c - 'A';
    } else if (c >= 'a' && c <= 'z') {
      sextet = c - 'a' + 26;
    } else if (c >= '0' && c <= '9') {
      sextet = c - '0' + 52;
    } else {
      return BROTLI_FALSE;
    }
    bits = (bits << 6) | (uint32_t)sextet;
    bit_count += 6;
    if (bit_count >= 8) {
      if (octet_count == max_out_len) return BROTLI_FALSE;
      bit_count -= 8;
      out[octet_count++] = (bits >> bit_count) & 0xFF;
    }
  }
  if (padding_count > 2) return BROTLI_FALSE;
  *out_len = octet_count;
  return BROTLI_TRUE;
}
/* Parse up to 5 decimal digits. */
static BROTLI_BOOL ParseInt(const char* s, int low, int high, int* result) {
  int value = 0;
  int i;
  for (i = 0; i < 5; ++i) {
    char c = s[i];
    if (c == 0) break;
    if (s[i] < '0' || s[i] > '9') return BROTLI_FALSE;
    value = (10 * value) + (c - '0');
  }
  if (i == 0) return BROTLI_FALSE;
  if (i > 1 && s[0] == '0') return BROTLI_FALSE;
  if (s[i] != 0) return BROTLI_FALSE;
  if (value < low || value > high) return BROTLI_FALSE;
  *result = value;
  return BROTLI_TRUE;
}
/* Returns "base file name" or its tail, if it contains '/' or '\'. */
static const char* FileName(const char* path) {
  const char* separator_position = strrchr(path, '/');
  if (separator_position) path = separator_position + 1;
  separator_position = strrchr(path, '\\');
  if (separator_position) path = separator_position + 1;
  return path;
}
/* Detect if the program name is a special alias that infers a command type. */
static BROTLI_BOOL CheckAlias(const char* name, const char* alias) {
  /* TODO: cast name to lower case? */
  size_t alias_len = strlen(alias);
  name = FileName(name);
  /* Partial comparison. On Windows there could be ".exe" suffix. */
  if (strncmp(name, alias, alias_len) == 0) {
    char terminator = name[alias_len];
    if (terminator == 0 || terminator == '.') return BROTLI_TRUE;
  }
  return BROTLI_FALSE;
}
static Command ParseParams(Context* params) {
  int argc = params->argc;
  char** argv = params->argv;
  int i;
  int next_option_index = 0;
  size_t input_count = 0;
  size_t longest_path_len = 1;
  BROTLI_BOOL command_set = BROTLI_FALSE;
  BROTLI_BOOL quality_set = BROTLI_FALSE;
  BROTLI_BOOL output_set = BROTLI_FALSE;
  BROTLI_BOOL keep_set = BROTLI_FALSE;
  BROTLI_BOOL squash_set = BROTLI_FALSE;
  BROTLI_BOOL lgwin_set = BROTLI_FALSE;
  BROTLI_BOOL suffix_set = BROTLI_FALSE;
  BROTLI_BOOL after_dash_dash = BROTLI_FALSE;
  BROTLI_BOOL comment_set = BROTLI_FALSE;
  BROTLI_BOOL concatenated_set = BROTLI_FALSE;
  Command command = COMMAND_COMPRESS;
  if (CheckAlias(argv[0], "brcat")) {
    command_set = BROTLI_TRUE;
    command = COMMAND_DECOMPRESS;
    concatenated_set = BROTLI_TRUE;
    params->allow_concatenated = BROTLI_TRUE;
    output_set = BROTLI_TRUE;
    params->write_to_stdout = BROTLI_TRUE;
  } else if (CheckAlias(argv[0], "unbrotli")) {
    command_set = BROTLI_TRUE;
    command = COMMAND_DECOMPRESS;
  }
  for (i = 1; i < argc; ++i) {
    const char* arg = argv[i];
    /* C99 5.1.2.2.1: "members argv[0] through argv[argc-1] inclusive shall
       contain pointers to strings"; NULL and 0-length are not forbidden. */
    size_t arg_len = arg ? strlen(arg) : 0;
    if (arg_len == 0) {
      params->not_input_indices[next_option_index++] = i;
      continue;
    }
    /* Too many options. The expected longest option list is:
       "-q 0 -w 10 -o f -D d -S b -d -f -k -n -v -K --", i.e. 17 items in total.
       This check is an additional guard that is never triggered, but provides
       a guard for future changes. */
    if (next_option_index > (MAX_OPTIONS - 2)) {
      fprintf(stderr, "too many options passed\n");
      return COMMAND_INVALID;
    }
    /* Input file entry. */
    if (after_dash_dash || arg[0] != '-' || arg_len == 1) {
      input_count++;
      if (longest_path_len < arg_len) longest_path_len = arg_len;
      continue;
    }
    /* Not a file entry. */
    params->not_input_indices[next_option_index++] = i;
    /* '--' entry stop parsing arguments. */
    if (arg_len == 2 && arg[1] == '-') {
      after_dash_dash = BROTLI_TRUE;
      continue;
    }
    /* Simple / coalesced options. */
    if (arg[1] != '-') {
      size_t j;
      for (j = 1; j < arg_len; ++j) {
        char c = arg[j];
        if (c >= '0' && c <= '9') {
          if (quality_set) {
            fprintf(stderr, "quality already set\n");
            return COMMAND_INVALID;
          }
          quality_set = BROTLI_TRUE;
          params->quality = c - '0';
          continue;
        } else if (c == 'c') {
          if (output_set) {
            fprintf(stderr, "write to standard output already set\n");
            return COMMAND_INVALID;
          }
          output_set = BROTLI_TRUE;
          params->write_to_stdout = BROTLI_TRUE;
          continue;
        } else if (c == 'd') {
          if (command_set) {
            fprintf(stderr, "command already set when parsing -d\n");
            return COMMAND_INVALID;
          }
          command_set = BROTLI_TRUE;
          command = COMMAND_DECOMPRESS;
          continue;
        } else if (c == 'f') {
          if (params->force_overwrite) {
            fprintf(stderr, "force output overwrite already set\n");
            return COMMAND_INVALID;
          }
          params->force_overwrite = BROTLI_TRUE;
          continue;
        } else if (c == 'h') {
          /* Don't parse further. */
          return COMMAND_HELP;
        } else if (c == 'j' || c == 'k') {
          if (keep_set) {
            fprintf(stderr, "argument --rm / -j or --keep / -k already set\n");
            return COMMAND_INVALID;
          }
          keep_set = BROTLI_TRUE;
          params->junk_source = TO_BROTLI_BOOL(c == 'j');
          continue;
        } else if (c == 'n') {
          if (!params->copy_stat) {
            fprintf(stderr, "argument --no-copy-stat / -n already set\n");
            return COMMAND_INVALID;
          }
          params->copy_stat = BROTLI_FALSE;
          continue;
        } else if (c == 's') {
          if (squash_set) {
            fprintf(stderr, "argument --squash / -s already set\n");
            return COMMAND_INVALID;
          }
          squash_set = BROTLI_TRUE;
          params->reject_uncompressible = BROTLI_TRUE;
          continue;
        } else if (c == 't') {
          if (command_set) {
            fprintf(stderr, "command already set when parsing -t\n");
            return COMMAND_INVALID;
          }
          command_set = BROTLI_TRUE;
          command = COMMAND_TEST_INTEGRITY;
          continue;
        } else if (c == 'v') {
          if (params->verbosity > 0) {
            fprintf(stderr, "argument --verbose / -v already set\n");
            return COMMAND_INVALID;
          }
          params->verbosity = 1;
          continue;
        } else if (c == 'K') {
          if (concatenated_set) {
            fprintf(stderr, "argument -K / --concatenated already set\n");
            return COMMAND_INVALID;
          }
          concatenated_set = BROTLI_TRUE;
          params->allow_concatenated = BROTLI_TRUE;
          continue;
        } else if (c == 'V') {
          /* Don't parse further. */
          return COMMAND_VERSION;
        } else if (c == 'Z') {
          if (quality_set) {
            fprintf(stderr, "quality already set\n");
            return COMMAND_INVALID;
          }
          quality_set = BROTLI_TRUE;
          params->quality = 11;
          continue;
        }
        /* o/q/w/C/D/S with parameter is expected */
        if (c != 'o' && c != 'q' && c != 'w' && c != 'C' && c != 'D' &&
            c != 'S') {
          fprintf(stderr, "invalid argument -%c\n", c);
          return COMMAND_INVALID;
        }
        if (j + 1 != arg_len) {
          fprintf(stderr, "expected parameter for argument -%c\n", c);
          return COMMAND_INVALID;
        }
        i++;
        if (i == argc || !argv[i] || argv[i][0] == 0) {
          fprintf(stderr, "expected parameter for argument -%c\n", c);
          return COMMAND_INVALID;
        }
        params->not_input_indices[next_option_index++] = i;
        if (c == 'o') {
          if (output_set) {
            fprintf(stderr, "write to standard output already set (-o)\n");
            return COMMAND_INVALID;
          }
          params->output_path = argv[i];
        } else if (c == 'q') {
          if (quality_set) {
            fprintf(stderr, "quality already set\n");
            return COMMAND_INVALID;
          }
          quality_set = ParseInt(argv[i], BROTLI_MIN_QUALITY,
                                 BROTLI_MAX_QUALITY, ¶ms->quality);
          if (!quality_set) {
            fprintf(stderr, "error parsing quality value [%s]\n", argv[i]);
            return COMMAND_INVALID;
          }
        } else if (c == 'w') {
          if (lgwin_set) {
            fprintf(stderr, "lgwin parameter already set\n");
            return COMMAND_INVALID;
          }
          lgwin_set = ParseInt(argv[i], 0,
                               BROTLI_MAX_WINDOW_BITS, ¶ms->lgwin);
          if (!lgwin_set) {
            fprintf(stderr, "error parsing lgwin value [%s]\n", argv[i]);
            return COMMAND_INVALID;
          }
          if (params->lgwin != 0 && params->lgwin < BROTLI_MIN_WINDOW_BITS) {
            fprintf(stderr,
                    "lgwin parameter (%d) smaller than the minimum (%d)\n",
                    params->lgwin, BROTLI_MIN_WINDOW_BITS);
            return COMMAND_INVALID;
          }
        } else if (c == 'C') {
          if (comment_set) {
            fprintf(stderr, "comment already set\n");
            return COMMAND_INVALID;
          }
          params->comment_len = MAX_COMMENT_LEN;
          if (!ParseBase64(argv[i], params->comment, ¶ms->comment_len)) {
            fprintf(stderr, "invalid base64-encoded comment\n");
            return COMMAND_INVALID;
          }
          comment_set = BROTLI_TRUE;
        } else if (c == 'D') {
          if (params->dictionary_path) {
            fprintf(stderr, "dictionary path already set\n");
            return COMMAND_INVALID;
          }
          params->dictionary_path = argv[i];
        } else if (c == 'S') {
          if (suffix_set) {
            fprintf(stderr, "suffix already set\n");
            return COMMAND_INVALID;
          }
          suffix_set = BROTLI_TRUE;
          params->suffix = argv[i];
        }
      }
    } else {  /* Double-dash. */
      arg = &arg[2];
      if (strcmp("best", arg) == 0) {
        if (quality_set) {
          fprintf(stderr, "quality already set\n");
          return COMMAND_INVALID;
        }
        quality_set = BROTLI_TRUE;
        params->quality = 11;
      } else if (strcmp("concatenated", arg) == 0) {
        if (concatenated_set) {
          fprintf(stderr, "argument -K / --concatenated already set\n");
          return COMMAND_INVALID;
        }
        concatenated_set = BROTLI_TRUE;
        params->allow_concatenated = BROTLI_TRUE;
        continue;
      } else if (strcmp("decompress", arg) == 0) {
        if (command_set) {
          fprintf(stderr, "command already set when parsing --decompress\n");
          return COMMAND_INVALID;
        }
        command_set = BROTLI_TRUE;
        command = COMMAND_DECOMPRESS;
      } else if (strcmp("force", arg) == 0) {
        if (params->force_overwrite) {
          fprintf(stderr, "force output overwrite already set\n");
          return COMMAND_INVALID;
        }
        params->force_overwrite = BROTLI_TRUE;
      } else if (strcmp("help", arg) == 0) {
        /* Don't parse further. */
        return COMMAND_HELP;
      } else if (strcmp("keep", arg) == 0) {
        if (keep_set) {
          fprintf(stderr, "argument --rm / -j or --keep / -k already set\n");
          return COMMAND_INVALID;
        }
        keep_set = BROTLI_TRUE;
        params->junk_source = BROTLI_FALSE;
      } else if (strcmp("no-copy-stat", arg) == 0) {
        if (!params->copy_stat) {
          fprintf(stderr, "argument --no-copy-stat / -n already set\n");
          return COMMAND_INVALID;
        }
        params->copy_stat = BROTLI_FALSE;
      } else if (strcmp("rm", arg) == 0) {
        if (keep_set) {
          fprintf(stderr, "argument --rm / -j or --keep / -k already set\n");
          return COMMAND_INVALID;
        }
        keep_set = BROTLI_TRUE;
        params->junk_source = BROTLI_TRUE;
      } else if (strcmp("squash", arg) == 0) {
        if (squash_set) {
          fprintf(stderr, "argument --squash / -s already set\n");
          return COMMAND_INVALID;
        }
        squash_set = BROTLI_TRUE;
        params->reject_uncompressible = BROTLI_TRUE;
        continue;
      } else if (strcmp("stdout", arg) == 0) {
        if (output_set) {
          fprintf(stderr, "write to standard output already set\n");
          return COMMAND_INVALID;
        }
        output_set = BROTLI_TRUE;
        params->write_to_stdout = BROTLI_TRUE;
      } else if (strcmp("test", arg) == 0) {
        if (command_set) {
          fprintf(stderr, "command already set when parsing --test\n");
          return COMMAND_INVALID;
        }
        command_set = BROTLI_TRUE;
        command = COMMAND_TEST_INTEGRITY;
      } else if (strcmp("verbose", arg) == 0) {
        if (params->verbosity > 0) {
          fprintf(stderr, "argument --verbose / -v already set\n");
          return COMMAND_INVALID;
        }
        params->verbosity = 1;
      } else if (strcmp("version", arg) == 0) {
        /* Don't parse further. */
        return COMMAND_VERSION;
      } else {
        /* key=value */
        const char* value = strchr(arg, '=');
        size_t key_len;
        if (!value || value[1] == 0) {
          fprintf(stderr, "must pass the parameter as --%s=value\n", arg);
          return COMMAND_INVALID;
        }
        key_len = (size_t)(value - arg);
        value++;
        if (strncmp("comment", arg, key_len) == 0) {
          if (comment_set) {
            fprintf(stderr, "comment already set\n");
            return COMMAND_INVALID;
          }
          params->comment_len = MAX_COMMENT_LEN;
          if (!ParseBase64(value, params->comment, ¶ms->comment_len)) {
            fprintf(stderr, "invalid base64-encoded comment\n");
            return COMMAND_INVALID;
          }
          comment_set = BROTLI_TRUE;
        } else if (strncmp("dictionary", arg, key_len) == 0) {
          if (params->dictionary_path) {
            fprintf(stderr, "dictionary path already set\n");
            return COMMAND_INVALID;
          }
          params->dictionary_path = value;
        } else if (strncmp("lgwin", arg, key_len) == 0) {
          if (lgwin_set) {
            fprintf(stderr, "lgwin parameter already set\n");
            return COMMAND_INVALID;
          }
          lgwin_set = ParseInt(value, 0,
                               BROTLI_MAX_WINDOW_BITS, ¶ms->lgwin);
          if (!lgwin_set) {
            fprintf(stderr, "error parsing lgwin value [%s]\n", value);
            return COMMAND_INVALID;
          }
          if (params->lgwin != 0 && params->lgwin < BROTLI_MIN_WINDOW_BITS) {
            fprintf(stderr,
                    "lgwin parameter (%d) smaller than the minimum (%d)\n",
                    params->lgwin, BROTLI_MIN_WINDOW_BITS);
            return COMMAND_INVALID;
          }
        } else if (strncmp("large_window", arg, key_len) == 0) {
          /* This option is intentionally not mentioned in help. */
          if (lgwin_set) {
            fprintf(stderr, "lgwin parameter already set\n");
            return COMMAND_INVALID;
          }
          lgwin_set = ParseInt(value, 0,
                               BROTLI_LARGE_MAX_WINDOW_BITS, ¶ms->lgwin);
          if (!lgwin_set) {
            fprintf(stderr, "error parsing lgwin value [%s]\n", value);
            return COMMAND_INVALID;
          }
          if (params->lgwin != 0 && params->lgwin < BROTLI_MIN_WINDOW_BITS) {
            fprintf(stderr,
                    "lgwin parameter (%d) smaller than the minimum (%d)\n",
                    params->lgwin, BROTLI_MIN_WINDOW_BITS);
            return COMMAND_INVALID;
          }
        } else if (strncmp("output", arg, key_len) == 0) {
          if (output_set) {
            fprintf(stderr,
                    "write to standard output already set (--output)\n");
            return COMMAND_INVALID;
          }
          params->output_path = value;
        } else if (strncmp("quality", arg, key_len) == 0) {
          if (quality_set) {
            fprintf(stderr, "quality already set\n");
            return COMMAND_INVALID;
          }
          quality_set = ParseInt(value, BROTLI_MIN_QUALITY,
                                 BROTLI_MAX_QUALITY, ¶ms->quality);
          if (!quality_set) {
            fprintf(stderr, "error parsing quality value [%s]\n", value);
            return COMMAND_INVALID;
          }
        } else if (strncmp("suffix", arg, key_len) == 0) {
          if (suffix_set) {
            fprintf(stderr, "suffix already set\n");
            return COMMAND_INVALID;
          }
          suffix_set = BROTLI_TRUE;
          params->suffix = value;
        } else {
          fprintf(stderr, "invalid parameter: [%s]\n", arg);
          return COMMAND_INVALID;
        }
      }
    }
  }
  params->input_count = input_count;
  params->longest_path_len = longest_path_len;
  params->decompress = (command == COMMAND_DECOMPRESS);
  params->test_integrity = (command == COMMAND_TEST_INTEGRITY);
  if (input_count > 1 && output_set) return COMMAND_INVALID;
  if (params->test_integrity) {
    if (params->output_path) return COMMAND_INVALID;
    if (params->write_to_stdout) return COMMAND_INVALID;
  }
  if (params->reject_uncompressible && params->write_to_stdout) {
    return COMMAND_INVALID;
  }
  if (strchr(params->suffix, '/') || strchr(params->suffix, '\\')) {
    return COMMAND_INVALID;
  }
  if (!params->decompress && params->allow_concatenated) {
    return COMMAND_INVALID;
  }
  if (params->allow_concatenated && params->comment_len) {
    return COMMAND_INVALID;
  }
  return command;
}
static void PrintVersion(void) {
  int major = BROTLI_VERSION_MAJOR;
  int minor = BROTLI_VERSION_MINOR;
  int patch = BROTLI_VERSION_PATCH;
  fprintf(stdout, "brotli %d.%d.%d\n", major, minor, patch);
}
static void PrintHelp(const char* name, BROTLI_BOOL error) {
  FILE* media = error ? stderr : stdout;
  /* String is cut to pieces with length less than 509, to conform C90 spec. */
  fprintf(media,
"Usage: %s [OPTION]... [FILE]...\n",
          name);
  fprintf(media,
"Options:\n"
"  -#                          compression level (0-9)\n"
"  -c, --stdout                write on standard output\n"
"  -d, --decompress            decompress\n"
"  -f, --force                 force output file overwrite\n"
"  -h, --help                  display this help and exit\n");
  fprintf(media,
"  -j, --rm                    remove source file(s)\n"
"  -s, --squash                remove destination file if larger than source\n"
"  -k, --keep                  keep source file(s) (default)\n"
"  -n, --no-copy-stat          do not copy source file(s) attributes\n"
"  -o FILE, --output=FILE      output file (only if 1 input file)\n");
  fprintf(media,
"  -q NUM, --quality=NUM       compression level (%d-%d)\n",
          BROTLI_MIN_QUALITY, BROTLI_MAX_QUALITY);
  fprintf(media,
"  -t, --test                  test compressed file integrity\n"
"  -v, --verbose               verbose mode\n");
  fprintf(media,
"  -w NUM, --lgwin=NUM         set LZ77 window size (0, %d-%d)\n"
"                              window size = 2**NUM - 16\n"
"                              0 lets compressor choose the optimal value\n",
          BROTLI_MIN_WINDOW_BITS, BROTLI_MAX_WINDOW_BITS);
  fprintf(media,
"  --large_window=NUM          use incompatible large-window brotli\n"
"                              bitstream with window size (0, %d-%d)\n"
"                              WARNING: this format is not compatible\n"
"                              with brotli RFC 7932 and may not be\n"
"                              decodable with regular brotli decoders\n",
          BROTLI_MIN_WINDOW_BITS, BROTLI_LARGE_MAX_WINDOW_BITS);
  fprintf(media,
"  -C B64, --comment=B64       set comment; argument is base64-decoded first;\n"
"                              (maximal decoded length: %d)\n"
"                              when decoding: check stream comment;\n"
"                              when encoding: embed comment (fingerprint)\n",
          MAX_COMMENT_LEN);
  fprintf(media,
"  -D FILE, --dictionary=FILE  use FILE as raw (LZ77) dictionary\n"
"  -K, --concatenated          allows concatenated brotli streams as input\n");
  fprintf(media,
"  -S SUF, --suffix=SUF        output file suffix (default:'%s')\n",
          DEFAULT_SUFFIX);
  fprintf(media,
"  -V, --version               display version and exit\n"
"  -Z, --best                  use best compression level (11) (default)\n"
"Simple options could be coalesced, i.e. '-9kf' is equivalent to '-9 -k -f'.\n"
"With no FILE, or when FILE is -, read standard input.\n"
"All arguments after '--' are treated as files.\n");
}
static const char* PrintablePath(const char* path) {
  return path ? path : "con";
}
static BROTLI_BOOL OpenInputFile(const char* input_path, FILE** f) {
  *f = NULL;
  if (!input_path) {
    *f = fdopen(MAKE_BINARY(STDIN_FILENO), "rb");
    return BROTLI_TRUE;
  }
  *f = fopen(input_path, "rb");
  if (!*f) {
    fprintf(stderr, "failed to open input file [%s]: %s\n",
            PrintablePath(input_path), strerror(errno));
    return BROTLI_FALSE;
  }
  return BROTLI_TRUE;
}
static BROTLI_BOOL OpenOutputFile(const char* output_path, FILE** f,
                                  BROTLI_BOOL force) {
  int fd;
  *f = NULL;
  if (!output_path) {
    *f = fdopen(MAKE_BINARY(STDOUT_FILENO), "wb");
    return BROTLI_TRUE;
  }
  fd = open(output_path, O_CREAT | (force ? 0 : O_EXCL) | O_WRONLY | O_TRUNC,
            S_IRUSR | S_IWUSR);
  if (fd < 0) {
    fprintf(stderr, "failed to open output file [%s]: %s\n",
            PrintablePath(output_path), strerror(errno));
    return BROTLI_FALSE;
  }
  *f = fdopen(fd, "wb");
  if (!*f) {
    fprintf(stderr, "failed to open output file [%s]: %s\n",
            PrintablePath(output_path), strerror(errno));
    return BROTLI_FALSE;
  }
  return BROTLI_TRUE;
}
static int64_t FileSize(const char* path) {
  FILE* f = fopen(path, "rb");
  int64_t retval;
  if (f == NULL) {
    return -1;
  }
  if (fseek(f, 0L, SEEK_END) != 0) {
    fclose(f);
    return -1;
  }
  retval = ftell(f);
  if (fclose(f) != 0) {
    return -1;
  }
  return retval;
}
static int CopyTimeStat(const struct stat* statbuf, const char* output_path) {
#if HAVE_UTIMENSAT
  struct timespec times[2];
  times[0].tv_sec = statbuf->st_atime;
  times[0].tv_nsec = ATIME_NSEC(statbuf);
  times[1].tv_sec = statbuf->st_mtime;
  times[1].tv_nsec = MTIME_NSEC(statbuf);
  return utimensat(AT_FDCWD, output_path, times, AT_SYMLINK_NOFOLLOW);
#else
  struct utimbuf times;
  times.actime = statbuf->st_atime;
  times.modtime = statbuf->st_mtime;
  return utime(output_path, ×);
#endif
}
/* Copy file times and permissions.
   TODO(eustas): this is a "best effort" implementation; honest cross-platform
   fully featured implementation is way too hacky; add more hacks by request. */
static void CopyStat(const char* input_path, const char* output_path) {
  struct stat statbuf;
  int res;
  if (input_path == 0 || output_path == 0) {
    return;
  }
  if (stat(input_path, &statbuf) != 0) {
    return;
  }
  res = CopyTimeStat(&statbuf, output_path);
  res = chmod(output_path, statbuf.st_mode & (S_IRWXU | S_IRWXG | S_IRWXO));
  if (res != 0) {
    fprintf(stderr, "setting access bits failed for [%s]: %s\n",
            PrintablePath(output_path), strerror(errno));
  }
  res = chown(output_path, (uid_t)-1, statbuf.st_gid);
  if (res != 0) {
    fprintf(stderr, "setting group failed for [%s]: %s\n",
            PrintablePath(output_path), strerror(errno));
  }
  res = chown(output_path, statbuf.st_uid, (gid_t)-1);
  if (res != 0) {
    fprintf(stderr, "setting user failed for [%s]: %s\n",
            PrintablePath(output_path), strerror(errno));
  }
}
/* Result ownership is passed to caller.
   |*dictionary_size| is set to resulting buffer size. */
static BROTLI_BOOL ReadDictionary(Context* context, Command command) {
  static const int kMaxDictionarySize =
      BROTLI_MAX_DISTANCE - BROTLI_MAX_BACKWARD_LIMIT(24);
  FILE* f;
  int64_t file_size_64;
  uint8_t* buffer;
  size_t bytes_read;
  if (context->dictionary_path == NULL) return BROTLI_TRUE;
  f = fopen(context->dictionary_path, "rb");
  if (f == NULL) {
    fprintf(stderr, "failed to open dictionary file [%s]: %s\n",
            PrintablePath(context->dictionary_path), strerror(errno));
    return BROTLI_FALSE;
  }
  file_size_64 = FileSize(context->dictionary_path);
  if (file_size_64 == -1) {
    fprintf(stderr, "could not get size of dictionary file [%s]",
            PrintablePath(context->dictionary_path));
    fclose(f);
    return BROTLI_FALSE;
  }
  if (file_size_64 > kMaxDictionarySize) {
    fprintf(stderr, "dictionary [%s] is larger than maximum allowed: %d\n",
            PrintablePath(context->dictionary_path), kMaxDictionarySize);
    fclose(f);
    return BROTLI_FALSE;
  }
  context->dictionary_size = (size_t)file_size_64;
  buffer = (uint8_t*)malloc(context->dictionary_size);
  if (!buffer) {
    fprintf(stderr, "could not read dictionary: out of memory\n");
    fclose(f);
    return BROTLI_FALSE;
  }
  bytes_read = fread(buffer, sizeof(uint8_t), context->dictionary_size, f);
  if (bytes_read != context->dictionary_size) {
    free(buffer);
    fprintf(stderr, "failed to read dictionary [%s]: %s\n",
            PrintablePath(context->dictionary_path), strerror(errno));
    fclose(f);
    return BROTLI_FALSE;
  }
  fclose(f);
  context->dictionary = buffer;
  if (command == COMMAND_COMPRESS) {
    context->prepared_dictionary = BrotliEncoderPrepareDictionary(
        BROTLI_SHARED_DICTIONARY_RAW, context->dictionary_size,
        context->dictionary, BROTLI_MAX_QUALITY, NULL, NULL, NULL);
    if (context->prepared_dictionary == NULL) {
      fprintf(stderr, "failed to prepare dictionary [%s]\n",
              PrintablePath(context->dictionary_path));
      return BROTLI_FALSE;
    }
  }
  return BROTLI_TRUE;
}
static BROTLI_BOOL NextFile(Context* context) {
  const char* arg;
  size_t arg_len;
  /* Iterator points to last used arg; increment to search for the next one. */
  context->iterator++;
  context->input_file_length = -1;
  /* No input path; read from console. */
  if (context->input_count == 0) {
    if (context->iterator > 1) return BROTLI_FALSE;
    context->current_input_path = NULL;
    /* Either write to the specified path, or to console. */
    context->current_output_path = context->output_path;
    return BROTLI_TRUE;
  }
  /* Skip option arguments. */
  while (context->iterator == context->not_input_indices[context->ignore]) {
    context->iterator++;
    context->ignore++;
  }
  /* All args are scanned already. */
  if (context->iterator >= context->argc) return BROTLI_FALSE;
  /* Iterator now points to the input file name. */
  arg = context->argv[context->iterator];
  arg_len = strlen(arg);
  /* Read from console. */
  if (arg_len == 1 && arg[0] == '-') {
    context->current_input_path = NULL;
    context->current_output_path = context->output_path;
    return BROTLI_TRUE;
  }
  context->current_input_path = arg;
  context->input_file_length = FileSize(arg);
  context->current_output_path = context->output_path;
  if (context->output_path) return BROTLI_TRUE;
  if (context->write_to_stdout) return BROTLI_TRUE;
  strcpy(context->modified_path, arg);
  context->current_output_path = context->modified_path;
  /* If output is not specified, input path suffix should match. */
  if (context->decompress) {
    size_t suffix_len = strlen(context->suffix);
    char* name = (char*)FileName(context->modified_path);
    char* name_suffix;
    size_t name_len = strlen(name);
    if (name_len < suffix_len + 1) {
      fprintf(stderr, "empty output file name for [%s] input file\n",
              PrintablePath(arg));
      context->iterator_error = BROTLI_TRUE;
      return BROTLI_FALSE;
    }
    name_suffix = name + name_len - suffix_len;
    if (strcmp(context->suffix, name_suffix) != 0) {
      fprintf(stderr, "input file [%s] suffix mismatch\n",
              PrintablePath(arg));
      context->iterator_error = BROTLI_TRUE;
      return BROTLI_FALSE;
    }
    name_suffix[0] = 0;
    return BROTLI_TRUE;
  } else {
    strcpy(context->modified_path + arg_len, context->suffix);
    return BROTLI_TRUE;
  }
}
static BROTLI_BOOL OpenFiles(Context* context) {
  BROTLI_BOOL is_ok = OpenInputFile(context->current_input_path, &context->fin);
  if (!context->test_integrity && is_ok) {
    is_ok = OpenOutputFile(
        context->current_output_path, &context->fout, context->force_overwrite);
  }
  return is_ok;
}
static BROTLI_BOOL CloseFiles(Context* context, BROTLI_BOOL rm_input,
                              BROTLI_BOOL rm_output) {
  BROTLI_BOOL is_ok = BROTLI_TRUE;
  if (!context->test_integrity && context->fout) {
    if (fclose(context->fout) != 0) {
      if (is_ok) {
        fprintf(stderr, "fclose failed [%s]: %s\n",
                PrintablePath(context->current_output_path), strerror(errno));
      }
      is_ok = BROTLI_FALSE;
    }
    if (rm_output && context->current_output_path) {
      unlink(context->current_output_path);
    }
    /* TOCTOU violation, but otherwise it is impossible to set file times. */
    if (!rm_output && is_ok && context->copy_stat) {
      CopyStat(context->current_input_path, context->current_output_path);
    }
  }
  if (context->fin) {
    if (fclose(context->fin) != 0) {
      if (is_ok) {
        fprintf(stderr, "fclose failed [%s]: %s\n",
                PrintablePath(context->current_input_path), strerror(errno));
      }
      is_ok = BROTLI_FALSE;
    }
  }
  if (rm_input && context->current_input_path) {
    unlink(context->current_input_path);
  }
  context->fin = NULL;
  context->fout = NULL;
  return is_ok;
}
static const size_t kFileBufferSize = 1 << 19;
static void InitializeBuffers(Context* context) {
  context->available_in = 0;
  context->next_in = NULL;
  context->available_out = kFileBufferSize;
  context->next_out = context->output;
  context->total_in = 0;
  context->total_out = 0;
  if (context->verbosity > 0) {
    context->start_time = clock();
  }
}
/* This method might give the false-negative result.
   However, after an empty / incomplete read it should tell the truth. */
static BROTLI_BOOL HasMoreInput(Context* context) {
  return feof(context->fin) ? BROTLI_FALSE : BROTLI_TRUE;
}
static BROTLI_BOOL ProvideInput(Context* context) {
  context->available_in =
      fread(context->input, 1, kFileBufferSize, context->fin);
  context->total_in += context->available_in;
  context->next_in = context->input;
  if (ferror(context->fin)) {
    fprintf(stderr, "failed to read input [%s]: %s\n",
            PrintablePath(context->current_input_path), strerror(errno));
    return BROTLI_FALSE;
  }
  return BROTLI_TRUE;
}
/* Internal: should be used only in Provide-/Flush-Output. */
static BROTLI_BOOL WriteOutput(Context* context) {
  size_t out_size = (size_t)(context->next_out - context->output);
  context->total_out += out_size;
  if (out_size == 0) return BROTLI_TRUE;
  if (context->test_integrity) return BROTLI_TRUE;
  fwrite(context->output, 1, out_size, context->fout);
  if (ferror(context->fout)) {
    fprintf(stderr, "failed to write output [%s]: %s\n",
            PrintablePath(context->current_output_path), strerror(errno));
    return BROTLI_FALSE;
  }
  return BROTLI_TRUE;
}
static BROTLI_BOOL ProvideOutput(Context* context) {
  if (!WriteOutput(context)) return BROTLI_FALSE;
  context->available_out = kFileBufferSize;
  context->next_out = context->output;
  return BROTLI_TRUE;
}
static BROTLI_BOOL FlushOutput(Context* context) {
  if (!WriteOutput(context)) return BROTLI_FALSE;
  context->available_out = 0;
  context->next_out = context->output;
  return BROTLI_TRUE;
}
static void PrintBytes(size_t value) {
  if (value < 1024) {
    fprintf(stderr, "%d B", (int)value);
  } else if (value < 1048576) {
    fprintf(stderr, "%0.3f KiB", (double)value / 1024.0);
  } else if (value < 1073741824) {
    fprintf(stderr, "%0.3f MiB", (double)value / 1048576.0);
  } else {
    fprintf(stderr, "%0.3f GiB", (double)value / 1073741824.0);
  }
}
static void PrintFileProcessingProgress(Context* context) {
  fprintf(stderr, "[%s]: ", PrintablePath(context->current_input_path));
  PrintBytes(context->total_in);
  fprintf(stderr, " -> ");
  PrintBytes(context->total_out);
  fprintf(stderr, " in %1.2f sec", (double)(context->end_time - context->start_time) / CLOCKS_PER_SEC);
}
static const char* PrettyDecoderErrorString(BrotliDecoderErrorCode code) {
  /* "_ERROR_domain_" is in only added in newer versions. If CLI is linked
     against older shared library, return error string as is; result might be
     a bit confusing, e.g. "RESERVED" instead of "FORMAT_RESERVED" */
  const char* prefix = "_ERROR_";
  size_t prefix_len = strlen(prefix);
  const char* error_str = BrotliDecoderErrorString(code);
  size_t error_len = strlen(error_str);
  if (error_len > prefix_len) {
    if (strncmp(error_str, prefix, prefix_len) == 0) {
      error_str += prefix_len;
    }
  }
  return error_str;
}
static void OnMetadataStart(void* opaque, size_t size) {
  Context* context = (Context*) opaque;
  if (context->comment_state == COMMENT_INIT) {
    if (context->comment_len != size) {
      context->comment_state = COMMENT_BAD;
      return;
    }
    context->comment_pos = 0;
    context->comment_state = COMMENT_READ;
  }
}
static void OnMetadataChunk(void* opaque, const uint8_t* data, size_t size) {
  Context* context = (Context*) opaque;
  if (context->comment_state == COMMENT_READ) {
    size_t i;
    for (i = 0; i < size; ++i) {
      if (context->comment_pos >= context->comment_len) {
        context->comment_state = COMMENT_BAD;
        return;
      }
      if (context->comment[context->comment_pos++] != data[i]) {
        context->comment_state = COMMENT_BAD;
        return;
      }
    }
    if (context->comment_pos == context->comment_len) {
      context->comment_state = COMMENT_OK;
    }
  }
}
static BROTLI_BOOL InitDecoder(Context* context) {
  context->decoder = BrotliDecoderCreateInstance(NULL, NULL, NULL);
  if (!context->decoder) {
    fprintf(stderr, "out of memory\n");
    return BROTLI_FALSE;
  }
  /* This allows decoding "large-window" streams. Though it creates
      fragmentation (new builds decode streams that old builds don't),
      it is better from used experience perspective. */
  BrotliDecoderSetParameter(
      context->decoder, BROTLI_DECODER_PARAM_LARGE_WINDOW, 1u);
  if (context->dictionary) {
    BrotliDecoderAttachDictionary(context->decoder,
        BROTLI_SHARED_DICTIONARY_RAW, context->dictionary_size,
        context->dictionary);
  }
  return BROTLI_TRUE;
}
static BROTLI_BOOL DecompressFile(Context* context) {
  BrotliDecoderState* s = context->decoder;
  BrotliDecoderResult result = BROTLI_DECODER_RESULT_NEEDS_MORE_INPUT;
  if (context->comment_len) {
    context->comment_state = COMMENT_INIT;
    BrotliDecoderSetMetadataCallbacks(s, &OnMetadataStart, &OnMetadataChunk,
        (void*)context);
  } else {
    context->comment_state = COMMENT_OK;
  }
  InitializeBuffers(context);
  for (;;) {
    /* Early check */
    if (context->comment_state == COMMENT_BAD) {
      fprintf(stderr, "corrupt input [%s]\n",
              PrintablePath(context->current_input_path));
      if (context->verbosity > 0) {
        fprintf(stderr, "reason: comment mismatch\n");
      }
      return BROTLI_FALSE;
    }
    if (result == BROTLI_DECODER_RESULT_NEEDS_MORE_INPUT) {
      if (!HasMoreInput(context)) {
        fprintf(stderr, "corrupt input [%s]\n",
                PrintablePath(context->current_input_path));
        if (context->verbosity > 0) {
          fprintf(stderr, "reason: truncated input\n");
        }
        return BROTLI_FALSE;
      }
      if (!ProvideInput(context)) return BROTLI_FALSE;
    } else if (result == BROTLI_DECODER_RESULT_NEEDS_MORE_OUTPUT) {
      if (!ProvideOutput(context)) return BROTLI_FALSE;
    } else if (result == BROTLI_DECODER_RESULT_SUCCESS) {
      if (!FlushOutput(context)) return BROTLI_FALSE;
      BROTLI_BOOL has_more_input = (context->available_in != 0);
      int extra_char = EOF;
      if (!has_more_input) {
        extra_char = fgetc(context->fin);
        if (extra_char != EOF) {
          has_more_input = BROTLI_TRUE;
          context->input[0] = (uint8_t)extra_char;
          context->next_in = context->input;
          context->available_in = 1;
        }
      }
      if (has_more_input) {
        if (context->allow_concatenated) {
          if (context->verbosity > 0) {
            fprintf(stderr, "extra input\n");
          }
          if (!ProvideOutput(context)) return BROTLI_FALSE;
          BrotliDecoderDestroyInstance(context->decoder);
          context->decoder = NULL;
          if (!InitDecoder(context)) return BROTLI_FALSE;
          s = context->decoder;
        } else {
          fprintf(stderr, "corrupt input [%s]\n",
                  PrintablePath(context->current_input_path));
          if (context->verbosity > 0) {
            fprintf(stderr, "reason: extra input\n");
          }
          return BROTLI_FALSE;
        }
      } else {
        if (context->verbosity > 0) {
          context->end_time = clock();
          fprintf(stderr, "Decompressed ");
          PrintFileProcessingProgress(context);
          fprintf(stderr, "\n");
        }
        /* Final check */
        if (context->comment_state != COMMENT_OK) {
          fprintf(stderr, "corrupt input [%s]\n",
                  PrintablePath(context->current_input_path));
          if (context->verbosity > 0) {
            fprintf(stderr, "reason: comment mismatch\n");
          }
        }
        return BROTLI_TRUE;
      }
    } else {  /* result == BROTLI_DECODER_RESULT_ERROR */
      fprintf(stderr, "corrupt input [%s]\n",
              PrintablePath(context->current_input_path));
      if (context->verbosity > 0) {
        BrotliDecoderErrorCode error = BrotliDecoderGetErrorCode(s);
        const char* error_str = PrettyDecoderErrorString(error);
        fprintf(stderr, "reason: %s (%d)\n", error_str, error);
      }
      return BROTLI_FALSE;
    }
    result = BrotliDecoderDecompressStream(s, &context->available_in,
        &context->next_in, &context->available_out, &context->next_out, 0);
  }
}
static BROTLI_BOOL DecompressFiles(Context* context) {
  while (NextFile(context)) {
    BROTLI_BOOL is_ok = BROTLI_TRUE;
    BROTLI_BOOL rm_input = BROTLI_FALSE;
    BROTLI_BOOL rm_output = BROTLI_TRUE;
    if (!InitDecoder(context)) return BROTLI_FALSE;
    is_ok = OpenFiles(context);
    if (is_ok && !context->current_input_path &&
        !context->force_overwrite && isatty(STDIN_FILENO)) {
      fprintf(stderr, "Use -h help. Use -f to force input from a terminal.\n");
      is_ok = BROTLI_FALSE;
    }
    if (is_ok) is_ok = DecompressFile(context);
    if (context->decoder) BrotliDecoderDestroyInstance(context->decoder);
    context->decoder = NULL;
    rm_output = !is_ok;
    rm_input = !rm_output && context->junk_source;
    if (!CloseFiles(context, rm_input, rm_output)) is_ok = BROTLI_FALSE;
    if (!is_ok) return BROTLI_FALSE;
  }
  return BROTLI_TRUE;
}
static BROTLI_BOOL CompressFile(Context* context, BrotliEncoderState* s) {
  BROTLI_BOOL is_eof = BROTLI_FALSE;
  BROTLI_BOOL prologue = !!context->comment_len;
  InitializeBuffers(context);
  for (;;) {
    if (context->available_in == 0 && !is_eof) {
      if (!ProvideInput(context)) return BROTLI_FALSE;
      is_eof = !HasMoreInput(context);
    }
    if (prologue) {
      prologue = BROTLI_FALSE;
      const uint8_t* next_meta = context->comment;
      size_t available_meta = context->comment_len;
      if (!BrotliEncoderCompressStream(s,
          BROTLI_OPERATION_EMIT_METADATA,
          &available_meta, &next_meta,
          &context->available_out, &context->next_out, NULL)) {
        /* Should detect OOM? */
        fprintf(stderr, "failed to emit metadata [%s]\n",
                PrintablePath(context->current_input_path));
        return BROTLI_FALSE;
      }
      if (available_meta != 0) {
        fprintf(stderr, "failed to emit metadata [%s]\n",
                PrintablePath(context->current_input_path));
        return BROTLI_FALSE;
      }
    } else {
      if (!BrotliEncoderCompressStream(s,
          is_eof ? BROTLI_OPERATION_FINISH : BROTLI_OPERATION_PROCESS,
          &context->available_in, &context->next_in,
          &context->available_out, &context->next_out, NULL)) {
        /* Should detect OOM? */
        fprintf(stderr, "failed to compress data [%s]\n",
                PrintablePath(context->current_input_path));
        return BROTLI_FALSE;
      }
    }
    if (context->available_out == 0) {
      if (!ProvideOutput(context)) return BROTLI_FALSE;
    }
    if (BrotliEncoderIsFinished(s)) {
      if (!FlushOutput(context)) return BROTLI_FALSE;
      if (context->verbosity > 0) {
        context->end_time = clock();
        fprintf(stderr, "Compressed ");
        PrintFileProcessingProgress(context);
        fprintf(stderr, "\n");
      }
      return BROTLI_TRUE;
    }
  }
}
static BROTLI_BOOL CompressFiles(Context* context) {
  while (NextFile(context)) {
    BROTLI_BOOL is_ok = BROTLI_TRUE;
    BROTLI_BOOL rm_input = BROTLI_FALSE;
    BROTLI_BOOL rm_output = BROTLI_TRUE;
    BrotliEncoderState* s = BrotliEncoderCreateInstance(NULL, NULL, NULL);
    if (!s) {
      fprintf(stderr, "out of memory\n");
      return BROTLI_FALSE;
    }
    BrotliEncoderSetParameter(s,
        BROTLI_PARAM_QUALITY, (uint32_t)context->quality);
    if (context->lgwin > 0) {
      /* Specified by user. */
      /* Do not enable "large-window" extension, if not required. */
      if (context->lgwin > BROTLI_MAX_WINDOW_BITS) {
        BrotliEncoderSetParameter(s, BROTLI_PARAM_LARGE_WINDOW, 1u);
      }
      BrotliEncoderSetParameter(s,
          BROTLI_PARAM_LGWIN, (uint32_t)context->lgwin);
    } else {
      /* 0, or not specified by user; could be chosen by compressor. */
      uint32_t lgwin = DEFAULT_LGWIN;
      /* Use file size to limit lgwin. */
      if (context->input_file_length >= 0) {
        lgwin = BROTLI_MIN_WINDOW_BITS;
        while (BROTLI_MAX_BACKWARD_LIMIT(lgwin) <
               (uint64_t)context->input_file_length) {
          lgwin++;
          if (lgwin == BROTLI_MAX_WINDOW_BITS) break;
        }
      }
      BrotliEncoderSetParameter(s, BROTLI_PARAM_LGWIN, lgwin);
    }
    if (context->input_file_length > 0) {
      uint32_t size_hint = context->input_file_length < (1 << 30) ?
          (uint32_t)context->input_file_length : (1u << 30);
      BrotliEncoderSetParameter(s, BROTLI_PARAM_SIZE_HINT, size_hint);
    }
    if (context->dictionary) {
      BrotliEncoderAttachPreparedDictionary(s, context->prepared_dictionary);
    }
    is_ok = OpenFiles(context);
    if (is_ok && !context->current_output_path &&
        !context->force_overwrite && isatty(STDOUT_FILENO)) {
      fprintf(stderr, "Use -h help. Use -f to force output to a terminal.\n");
      is_ok = BROTLI_FALSE;
    }
    if (is_ok) is_ok = CompressFile(context, s);
    BrotliEncoderDestroyInstance(s);
    rm_output = !is_ok;
    if (is_ok && context->reject_uncompressible) {
      if (context->total_out >= context->total_in) {
        rm_output = BROTLI_TRUE;
        if (context->verbosity > 0) {
          fprintf(stderr, "Output is larger than input\n");
        }
      }
    }
    rm_input = !rm_output && context->junk_source;
    if (!CloseFiles(context, rm_input, rm_output)) is_ok = BROTLI_FALSE;
    if (!is_ok) return BROTLI_FALSE;
  }
  return BROTLI_TRUE;
}
int main(int argc, char** argv) {
  Command command;
  Context context;
  BROTLI_BOOL is_ok = BROTLI_TRUE;
  int i;
  context.quality = 11;
  context.lgwin = -1;
  context.verbosity = 0;
  context.comment_len = 0;
  context.force_overwrite = BROTLI_FALSE;
  context.junk_source = BROTLI_FALSE;
  context.reject_uncompressible = BROTLI_FALSE;
  context.copy_stat = BROTLI_TRUE;
  context.test_integrity = BROTLI_FALSE;
  context.write_to_stdout = BROTLI_FALSE;
  context.decompress = BROTLI_FALSE;
  context.large_window = BROTLI_FALSE;
  context.allow_concatenated = BROTLI_FALSE;
  context.output_path = NULL;
  context.dictionary_path = NULL;
  context.suffix = DEFAULT_SUFFIX;
  for (i = 0; i < MAX_OPTIONS; ++i) context.not_input_indices[i] = 0;
  context.longest_path_len = 1;
  context.input_count = 0;
  context.argc = argc;
  context.argv = argv;
  context.dictionary = NULL;
  context.dictionary_size = 0;
  context.decoder = NULL;
  context.prepared_dictionary = NULL;
  context.modified_path = NULL;
  context.iterator = 0;
  context.ignore = 0;
  context.iterator_error = BROTLI_FALSE;
  context.buffer = NULL;
  context.current_input_path = NULL;
  context.current_output_path = NULL;
  context.fin = NULL;
  context.fout = NULL;
  command = ParseParams(&context);
  if (command == COMMAND_COMPRESS || command == COMMAND_DECOMPRESS ||
      command == COMMAND_TEST_INTEGRITY) {
    if (!ReadDictionary(&context, command)) is_ok = BROTLI_FALSE;
    if (is_ok) {
      size_t modified_path_len =
          context.longest_path_len + strlen(context.suffix) + 1;
      context.modified_path = (char*)malloc(modified_path_len);
      context.buffer = (uint8_t*)malloc(kFileBufferSize * 2);
      if (!context.modified_path || !context.buffer) {
        fprintf(stderr, "out of memory\n");
        is_ok = BROTLI_FALSE;
      } else {
        context.input = context.buffer;
        context.output = context.buffer + kFileBufferSize;
      }
    }
  }
  if (!is_ok) command = COMMAND_NOOP;
  switch (command) {
    case COMMAND_NOOP:
      break;
    case COMMAND_VERSION:
      PrintVersion();
      break;
    case COMMAND_COMPRESS:
      is_ok = CompressFiles(&context);
      break;
    case COMMAND_DECOMPRESS:
    case COMMAND_TEST_INTEGRITY:
      is_ok = DecompressFiles(&context);
      break;
    case COMMAND_HELP:
    case COMMAND_INVALID:
    default:
      is_ok = (command == COMMAND_HELP);
      PrintHelp(FileName(argv[0]), is_ok);
      break;
  }
  if (context.iterator_error) is_ok = BROTLI_FALSE;
  BrotliEncoderDestroyPreparedDictionary(context.prepared_dictionary);
  free(context.dictionary);
  free(context.modified_path);
  free(context.buffer);
  if (!is_ok) exit(1);
  return 0;
}