1 /* $NetBSD: lesskey.c,v 1.4 2013/09/04 19:44:21 tron Exp $ */ 2 3 /* 4 * Copyright (C) 1984-2012 Mark Nudelman 5 * 6 * You may distribute under the terms of either the GNU General Public 7 * License or the Less License, as specified in the README file. 8 * 9 * For more information, see the README file. 10 */ 11 12 13 /* 14 * lesskey [-o output] [input] 15 * 16 * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * 17 * 18 * Make a .less file. 19 * If no input file is specified, standard input is used. 20 * If no output file is specified, $HOME/.less is used. 21 * 22 * The .less file is used to specify (to "less") user-defined 23 * key bindings. Basically any sequence of 1 to MAX_CMDLEN 24 * keystrokes may be bound to an existing less function. 25 * 26 * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * 27 * 28 * The input file is an ascii file consisting of a 29 * sequence of lines of the form: 30 * string <whitespace> action [chars] <newline> 31 * 32 * "string" is a sequence of command characters which form 33 * the new user-defined command. The command 34 * characters may be: 35 * 1. The actual character itself. 36 * 2. A character preceded by ^ to specify a 37 * control character (e.g. ^X means control-X). 38 * 3. A backslash followed by one to three octal digits 39 * to specify a character by its octal value. 40 * 4. A backslash followed by b, e, n, r or t 41 * to specify \b, ESC, \n, \r or \t, respectively. 42 * 5. Any character (other than those mentioned above) preceded 43 * by a \ to specify the character itself (characters which 44 * must be preceded by \ include ^, \, and whitespace. 45 * "action" is the name of a "less" action, from the table below. 46 * "chars" is an optional sequence of characters which is treated 47 * as keyboard input after the command is executed. 48 * 49 * Blank lines and lines which start with # are ignored, 50 * except for the special control lines: 51 * #command Signals the beginning of the command 52 * keys section. 53 * #line-edit Signals the beginning of the line-editing 54 * keys section. 55 * #env Signals the beginning of the environment 56 * variable section. 57 * #stop Stops command parsing in less; 58 * causes all default keys to be disabled. 59 * 60 * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * 61 * 62 * The output file is a non-ascii file, consisting of a header, 63 * one or more sections, and a trailer. 64 * Each section begins with a section header, a section length word 65 * and the section data. Normally there are three sections: 66 * CMD_SECTION Definition of command keys. 67 * EDIT_SECTION Definition of editing keys. 68 * END_SECTION A special section header, with no 69 * length word or section data. 70 * 71 * Section data consists of zero or more byte sequences of the form: 72 * string <0> <action> 73 * or 74 * string <0> <action|A_EXTRA> chars <0> 75 * 76 * "string" is the command string. 77 * "<0>" is one null byte. 78 * "<action>" is one byte containing the action code (the A_xxx value). 79 * If action is ORed with A_EXTRA, the action byte is followed 80 * by the null-terminated "chars" string. 81 * 82 * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * 83 */ 84 85 #include "less.h" 86 #include "lesskey.h" 87 #include "cmd.h" 88 89 struct cmdname 90 { 91 char *cn_name; 92 int cn_action; 93 }; 94 95 struct cmdname cmdnames[] = 96 { 97 { "back-bracket", A_B_BRACKET }, 98 { "back-line", A_B_LINE }, 99 { "back-line-force", A_BF_LINE }, 100 { "back-screen", A_B_SCREEN }, 101 { "back-scroll", A_B_SCROLL }, 102 { "back-search", A_B_SEARCH }, 103 { "back-window", A_B_WINDOW }, 104 { "debug", A_DEBUG }, 105 { "digit", A_DIGIT }, 106 { "display-flag", A_DISP_OPTION }, 107 { "display-option", A_DISP_OPTION }, 108 { "end", A_GOEND }, 109 { "examine", A_EXAMINE }, 110 { "filter", A_FILTER }, 111 { "first-cmd", A_FIRSTCMD }, 112 { "firstcmd", A_FIRSTCMD }, 113 { "flush-repaint", A_FREPAINT }, 114 { "forw-bracket", A_F_BRACKET }, 115 { "forw-forever", A_F_FOREVER }, 116 { "forw-until-hilite", A_F_UNTIL_HILITE }, 117 { "forw-line", A_F_LINE }, 118 { "forw-line-force", A_FF_LINE }, 119 { "forw-screen", A_F_SCREEN }, 120 { "forw-screen-force", A_FF_SCREEN }, 121 { "forw-scroll", A_F_SCROLL }, 122 { "forw-search", A_F_SEARCH }, 123 { "forw-window", A_F_WINDOW }, 124 { "goto-end", A_GOEND }, 125 { "goto-line", A_GOLINE }, 126 { "goto-mark", A_GOMARK }, 127 { "help", A_HELP }, 128 { "index-file", A_INDEX_FILE }, 129 { "invalid", A_UINVALID }, 130 { "left-scroll", A_LSHIFT }, 131 { "next-file", A_NEXT_FILE }, 132 { "next-tag", A_NEXT_TAG }, 133 { "noaction", A_NOACTION }, 134 { "percent", A_PERCENT }, 135 { "pipe", A_PIPE }, 136 { "prev-file", A_PREV_FILE }, 137 { "prev-tag", A_PREV_TAG }, 138 { "quit", A_QUIT }, 139 { "remove-file", A_REMOVE_FILE }, 140 { "repaint", A_REPAINT }, 141 { "repaint-flush", A_FREPAINT }, 142 { "repeat-search", A_AGAIN_SEARCH }, 143 { "repeat-search-all", A_T_AGAIN_SEARCH }, 144 { "reverse-search", A_REVERSE_SEARCH }, 145 { "reverse-search-all", A_T_REVERSE_SEARCH }, 146 { "right-scroll", A_RSHIFT }, 147 { "set-mark", A_SETMARK }, 148 { "shell", A_SHELL }, 149 { "status", A_STAT }, 150 { "toggle-flag", A_OPT_TOGGLE }, 151 { "toggle-option", A_OPT_TOGGLE }, 152 { "undo-hilite", A_UNDO_SEARCH }, 153 { "version", A_VERSION }, 154 { "visual", A_VISUAL }, 155 { NULL, 0 } 156 }; 157 158 struct cmdname editnames[] = 159 { 160 { "back-complete", EC_B_COMPLETE }, 161 { "backspace", EC_BACKSPACE }, 162 { "delete", EC_DELETE }, 163 { "down", EC_DOWN }, 164 { "end", EC_END }, 165 { "expand", EC_EXPAND }, 166 { "forw-complete", EC_F_COMPLETE }, 167 { "home", EC_HOME }, 168 { "insert", EC_INSERT }, 169 { "invalid", EC_UINVALID }, 170 { "kill-line", EC_LINEKILL }, 171 { "abort", EC_ABORT }, 172 { "left", EC_LEFT }, 173 { "literal", EC_LITERAL }, 174 { "right", EC_RIGHT }, 175 { "up", EC_UP }, 176 { "word-backspace", EC_W_BACKSPACE }, 177 { "word-delete", EC_W_DELETE }, 178 { "word-left", EC_W_LEFT }, 179 { "word-right", EC_W_RIGHT }, 180 { NULL, 0 } 181 }; 182 183 struct table 184 { 185 struct cmdname *names; 186 char *pbuffer; 187 char buffer[MAX_USERCMD]; 188 }; 189 190 struct table cmdtable; 191 struct table edittable; 192 struct table vartable; 193 struct table *currtable = &cmdtable; 194 195 char fileheader[] = { 196 C0_LESSKEY_MAGIC, 197 C1_LESSKEY_MAGIC, 198 C2_LESSKEY_MAGIC, 199 C3_LESSKEY_MAGIC 200 }; 201 char filetrailer[] = { 202 C0_END_LESSKEY_MAGIC, 203 C1_END_LESSKEY_MAGIC, 204 C2_END_LESSKEY_MAGIC 205 }; 206 char cmdsection[1] = { CMD_SECTION }; 207 char editsection[1] = { EDIT_SECTION }; 208 char varsection[1] = { VAR_SECTION }; 209 char endsection[1] = { END_SECTION }; 210 211 char *infile = NULL; 212 char *outfile = NULL ; 213 214 int linenum; 215 int errors; 216 217 void terror(char *); 218 219 extern char version[]; 220 221 void 222 usage() 223 { 224 fprintf(stderr, "usage: lesskey [-o output] [input]\n"); 225 exit(1); 226 } 227 228 char * 229 mkpathname(dirname, filename) 230 char *dirname; 231 char *filename; 232 { 233 char *pathname; 234 235 pathname = calloc(strlen(dirname) + strlen(filename) + 2, sizeof(char)); 236 strcpy(pathname, dirname); 237 strcat(pathname, PATHNAME_SEP); 238 strcat(pathname, filename); 239 return (pathname); 240 } 241 242 /* 243 * Figure out the name of a default file (in the user's HOME directory). 244 */ 245 char * 246 homefile(filename) 247 char *filename; 248 { 249 char *p; 250 char *pathname; 251 252 if ((p = getenv("HOME")) != NULL && *p != '\0') 253 pathname = mkpathname(p, filename); 254 #if OS2 255 else if ((p = getenv("INIT")) != NULL && *p != '\0') 256 pathname = mkpathname(p, filename); 257 #endif 258 else 259 { 260 fprintf(stderr, "cannot find $HOME - using current directory\n"); 261 pathname = mkpathname(".", filename); 262 } 263 return (pathname); 264 } 265 266 /* 267 * Parse command line arguments. 268 */ 269 void 270 parse_args(argc, argv) 271 int argc; 272 char **argv; 273 { 274 char *arg; 275 276 outfile = NULL; 277 while (--argc > 0) 278 { 279 arg = *++argv; 280 if (arg[0] != '-') 281 /* Arg does not start with "-"; it's not an option. */ 282 break; 283 if (arg[1] == '\0') 284 /* "-" means standard input. */ 285 break; 286 if (arg[1] == '-' && arg[2] == '\0') 287 { 288 /* "--" means end of options. */ 289 argc--; 290 argv++; 291 break; 292 } 293 switch (arg[1]) 294 { 295 case '-': 296 if (strncmp(arg, "--output", 8) == 0) 297 { 298 if (arg[8] == '\0') 299 outfile = &arg[8]; 300 else if (arg[8] == '=') 301 outfile = &arg[9]; 302 else 303 usage(); 304 goto opt_o; 305 } 306 if (strcmp(arg, "--version") == 0) 307 { 308 goto opt_V; 309 } 310 usage(); 311 break; 312 case 'o': 313 outfile = &argv[0][2]; 314 opt_o: 315 if (*outfile == '\0') 316 { 317 if (--argc <= 0) 318 usage(); 319 outfile = *(++argv); 320 } 321 break; 322 case 'V': 323 opt_V: 324 printf("lesskey version %s\n", version); 325 exit(0); 326 default: 327 usage(); 328 } 329 } 330 if (argc > 1) 331 usage(); 332 /* 333 * Open the input file, or use DEF_LESSKEYINFILE if none specified. 334 */ 335 if (argc > 0) 336 infile = *argv; 337 else 338 infile = homefile(DEF_LESSKEYINFILE); 339 } 340 341 /* 342 * Initialize data structures. 343 */ 344 void 345 init_tables() 346 { 347 cmdtable.names = cmdnames; 348 cmdtable.pbuffer = cmdtable.buffer; 349 350 edittable.names = editnames; 351 edittable.pbuffer = edittable.buffer; 352 353 vartable.names = NULL; 354 vartable.pbuffer = vartable.buffer; 355 } 356 357 /* 358 * Parse one character of a string. 359 */ 360 char * 361 tstr(pp, xlate) 362 char **pp; 363 int xlate; 364 { 365 register char *p; 366 register char ch; 367 register int i; 368 static char buf[10]; 369 static char tstr_control_k[] = 370 { SK_SPECIAL_KEY, SK_CONTROL_K, 6, 1, 1, 1, '\0' }; 371 372 p = *pp; 373 switch (*p) 374 { 375 case '\\': 376 ++p; 377 switch (*p) 378 { 379 case '0': case '1': case '2': case '3': 380 case '4': case '5': case '6': case '7': 381 /* 382 * Parse an octal number. 383 */ 384 ch = 0; 385 i = 0; 386 do 387 ch = 8*ch + (*p - '0'); 388 while (*++p >= '0' && *p <= '7' && ++i < 3); 389 *pp = p; 390 if (xlate && ch == CONTROL('K')) 391 return tstr_control_k; 392 buf[0] = ch; 393 buf[1] = '\0'; 394 return (buf); 395 case 'b': 396 *pp = p+1; 397 return ("\b"); 398 case 'e': 399 *pp = p+1; 400 buf[0] = ESC; 401 buf[1] = '\0'; 402 return (buf); 403 case 'n': 404 *pp = p+1; 405 return ("\n"); 406 case 'r': 407 *pp = p+1; 408 return ("\r"); 409 case 't': 410 *pp = p+1; 411 return ("\t"); 412 case 'k': 413 if (xlate) 414 { 415 switch (*++p) 416 { 417 case 'u': ch = SK_UP_ARROW; break; 418 case 'd': ch = SK_DOWN_ARROW; break; 419 case 'r': ch = SK_RIGHT_ARROW; break; 420 case 'l': ch = SK_LEFT_ARROW; break; 421 case 'U': ch = SK_PAGE_UP; break; 422 case 'D': ch = SK_PAGE_DOWN; break; 423 case 'h': ch = SK_HOME; break; 424 case 'e': ch = SK_END; break; 425 case 'x': ch = SK_DELETE; break; 426 default: 427 terror("illegal char after \\k"); 428 *pp = p+1; 429 return (""); 430 } 431 *pp = p+1; 432 buf[0] = SK_SPECIAL_KEY; 433 buf[1] = ch; 434 buf[2] = 6; 435 buf[3] = 1; 436 buf[4] = 1; 437 buf[5] = 1; 438 buf[6] = '\0'; 439 return (buf); 440 } 441 /* FALLTHRU */ 442 default: 443 /* 444 * Backslash followed by any other char 445 * just means that char. 446 */ 447 *pp = p+1; 448 buf[0] = *p; 449 buf[1] = '\0'; 450 if (xlate && buf[0] == CONTROL('K')) 451 return tstr_control_k; 452 return (buf); 453 } 454 case '^': 455 /* 456 * Caret means CONTROL. 457 */ 458 *pp = p+2; 459 buf[0] = CONTROL(p[1]); 460 buf[1] = '\0'; 461 if (buf[0] == CONTROL('K')) 462 return tstr_control_k; 463 return (buf); 464 } 465 *pp = p+1; 466 buf[0] = *p; 467 buf[1] = '\0'; 468 if (xlate && buf[0] == CONTROL('K')) 469 return tstr_control_k; 470 return (buf); 471 } 472 473 /* 474 * Skip leading spaces in a string. 475 */ 476 public char * 477 skipsp(s) 478 register char *s; 479 { 480 while (*s == ' ' || *s == '\t') 481 s++; 482 return (s); 483 } 484 485 /* 486 * Skip non-space characters in a string. 487 */ 488 public char * 489 skipnsp(s) 490 register char *s; 491 { 492 while (*s != '\0' && *s != ' ' && *s != '\t') 493 s++; 494 return (s); 495 } 496 497 /* 498 * Clean up an input line: 499 * strip off the trailing newline & any trailing # comment. 500 */ 501 char * 502 clean_line(s) 503 char *s; 504 { 505 register int i; 506 507 s = skipsp(s); 508 for (i = 0; s[i] != '\n' && s[i] != '\r' && s[i] != '\0'; i++) 509 if (s[i] == '#' && (i == 0 || s[i-1] != '\\')) 510 break; 511 s[i] = '\0'; 512 return (s); 513 } 514 515 /* 516 * Add a byte to the output command table. 517 */ 518 void 519 add_cmd_char(c) 520 int c; 521 { 522 if (currtable->pbuffer >= currtable->buffer + MAX_USERCMD) 523 { 524 terror("too many commands"); 525 exit(1); 526 } 527 *(currtable->pbuffer)++ = c; 528 } 529 530 /* 531 * Add a string to the output command table. 532 */ 533 void 534 add_cmd_str(s) 535 char *s; 536 { 537 for ( ; *s != '\0'; s++) 538 add_cmd_char(*s); 539 } 540 541 /* 542 * See if we have a special "control" line. 543 */ 544 int 545 control_line(s) 546 char *s; 547 { 548 #define PREFIX(str,pat) (strncmp(str,pat,strlen(pat)) == 0) 549 550 if (PREFIX(s, "#line-edit")) 551 { 552 currtable = &edittable; 553 return (1); 554 } 555 if (PREFIX(s, "#command")) 556 { 557 currtable = &cmdtable; 558 return (1); 559 } 560 if (PREFIX(s, "#env")) 561 { 562 currtable = &vartable; 563 return (1); 564 } 565 if (PREFIX(s, "#stop")) 566 { 567 add_cmd_char('\0'); 568 add_cmd_char(A_END_LIST); 569 return (1); 570 } 571 return (0); 572 } 573 574 /* 575 * Output some bytes. 576 */ 577 void 578 fputbytes(fd, buf, len) 579 FILE *fd; 580 char *buf; 581 int len; 582 { 583 while (len-- > 0) 584 { 585 fwrite(buf, sizeof(char), 1, fd); 586 buf++; 587 } 588 } 589 590 /* 591 * Output an integer, in special KRADIX form. 592 */ 593 void 594 fputint(fd, val) 595 FILE *fd; 596 unsigned int val; 597 { 598 char c; 599 600 if (val >= KRADIX*KRADIX) 601 { 602 fprintf(stderr, "error: integer too big (%d > %d)\n", 603 val, KRADIX*KRADIX); 604 exit(1); 605 } 606 c = val % KRADIX; 607 fwrite(&c, sizeof(char), 1, fd); 608 c = val / KRADIX; 609 fwrite(&c, sizeof(char), 1, fd); 610 } 611 612 /* 613 * Find an action, given the name of the action. 614 */ 615 int 616 findaction(actname) 617 char *actname; 618 { 619 int i; 620 621 for (i = 0; currtable->names[i].cn_name != NULL; i++) 622 if (strcmp(currtable->names[i].cn_name, actname) == 0) 623 return (currtable->names[i].cn_action); 624 terror("unknown action"); 625 return (A_INVALID); 626 } 627 628 void 629 terror(s) 630 char *s; 631 { 632 fprintf(stderr, "line %d: %s\n", linenum, s); 633 errors++; 634 } 635 636 637 void 638 parse_cmdline(p) 639 char *p; 640 { 641 int cmdlen; 642 char *actname; 643 int action; 644 char *s; 645 char c; 646 647 /* 648 * Parse the command string and store it in the current table. 649 */ 650 cmdlen = 0; 651 do 652 { 653 s = tstr(&p, 1); 654 cmdlen += strlen(s); 655 if (cmdlen > MAX_CMDLEN) 656 terror("command too long"); 657 else 658 add_cmd_str(s); 659 } while (*p != ' ' && *p != '\t' && *p != '\0'); 660 /* 661 * Terminate the command string with a null byte. 662 */ 663 add_cmd_char('\0'); 664 665 /* 666 * Skip white space between the command string 667 * and the action name. 668 * Terminate the action name with a null byte. 669 */ 670 p = skipsp(p); 671 if (*p == '\0') 672 { 673 terror("missing action"); 674 return; 675 } 676 actname = p; 677 p = skipnsp(p); 678 c = *p; 679 *p = '\0'; 680 681 /* 682 * Parse the action name and store it in the current table. 683 */ 684 action = findaction(actname); 685 686 /* 687 * See if an extra string follows the action name. 688 */ 689 *p = c; 690 p = skipsp(p); 691 if (*p == '\0') 692 { 693 add_cmd_char(action); 694 } else 695 { 696 /* 697 * OR the special value A_EXTRA into the action byte. 698 * Put the extra string after the action byte. 699 */ 700 add_cmd_char(action | A_EXTRA); 701 while (*p != '\0') 702 add_cmd_str(tstr(&p, 0)); 703 add_cmd_char('\0'); 704 } 705 } 706 707 void 708 parse_varline(p) 709 char *p; 710 { 711 char *s; 712 713 do 714 { 715 s = tstr(&p, 0); 716 add_cmd_str(s); 717 } while (*p != ' ' && *p != '\t' && *p != '=' && *p != '\0'); 718 /* 719 * Terminate the variable name with a null byte. 720 */ 721 add_cmd_char('\0'); 722 723 p = skipsp(p); 724 if (*p++ != '=') 725 { 726 terror("missing ="); 727 return; 728 } 729 730 add_cmd_char(EV_OK|A_EXTRA); 731 732 p = skipsp(p); 733 while (*p != '\0') 734 { 735 s = tstr(&p, 0); 736 add_cmd_str(s); 737 } 738 add_cmd_char('\0'); 739 } 740 741 /* 742 * Parse a line from the lesskey file. 743 */ 744 void 745 parse_line(line) 746 char *line; 747 { 748 char *p; 749 750 /* 751 * See if it is a control line. 752 */ 753 if (control_line(line)) 754 return; 755 /* 756 * Skip leading white space. 757 * Replace the final newline with a null byte. 758 * Ignore blank lines and comments. 759 */ 760 p = clean_line(line); 761 if (*p == '\0') 762 return; 763 764 if (currtable == &vartable) 765 parse_varline(p); 766 else 767 parse_cmdline(p); 768 } 769 770 int 771 main(argc, argv) 772 int argc; 773 char *argv[]; 774 { 775 FILE *desc; 776 FILE *out; 777 char line[1024]; 778 779 #ifdef WIN32 780 if (getenv("HOME") == NULL) 781 { 782 /* 783 * If there is no HOME environment variable, 784 * try the concatenation of HOMEDRIVE + HOMEPATH. 785 */ 786 char *drive = getenv("HOMEDRIVE"); 787 char *path = getenv("HOMEPATH"); 788 if (drive != NULL && path != NULL) 789 { 790 char *env = (char *) calloc(strlen(drive) + 791 strlen(path) + 6, sizeof(char)); 792 strcpy(env, "HOME="); 793 strcat(env, drive); 794 strcat(env, path); 795 putenv(env); 796 } 797 } 798 #endif /* WIN32 */ 799 800 /* 801 * Process command line arguments. 802 */ 803 parse_args(argc, argv); 804 init_tables(); 805 806 /* 807 * Open the input file. 808 */ 809 if (strcmp(infile, "-") == 0) 810 desc = stdin; 811 else if ((desc = fopen(infile, "r")) == NULL) 812 { 813 #if HAVE_PERROR 814 perror(infile); 815 #else 816 fprintf(stderr, "Cannot open %s\n", infile); 817 #endif 818 usage(); 819 } 820 821 /* 822 * Read and parse the input file, one line at a time. 823 */ 824 errors = 0; 825 linenum = 0; 826 while (fgets(line, sizeof(line), desc) != NULL) 827 { 828 ++linenum; 829 parse_line(line); 830 } 831 832 /* 833 * Write the output file. 834 * If no output file was specified, use "$HOME/.less" 835 */ 836 if (errors > 0) 837 { 838 fprintf(stderr, "%d errors; no output produced\n", errors); 839 exit(1); 840 } 841 842 if (outfile == NULL) 843 outfile = getenv("LESSKEY"); 844 if (outfile == NULL) 845 outfile = homefile(LESSKEYFILE); 846 if ((out = fopen(outfile, "wb")) == NULL) 847 { 848 #if HAVE_PERROR 849 perror(outfile); 850 #else 851 fprintf(stderr, "Cannot open %s\n", outfile); 852 #endif 853 exit(1); 854 } 855 856 /* File header */ 857 fputbytes(out, fileheader, sizeof(fileheader)); 858 859 /* Command key section */ 860 fputbytes(out, cmdsection, sizeof(cmdsection)); 861 fputint(out, cmdtable.pbuffer - cmdtable.buffer); 862 fputbytes(out, (char *)cmdtable.buffer, cmdtable.pbuffer-cmdtable.buffer); 863 /* Edit key section */ 864 fputbytes(out, editsection, sizeof(editsection)); 865 fputint(out, edittable.pbuffer - edittable.buffer); 866 fputbytes(out, (char *)edittable.buffer, edittable.pbuffer-edittable.buffer); 867 868 /* Environment variable section */ 869 fputbytes(out, varsection, sizeof(varsection)); 870 fputint(out, vartable.pbuffer - vartable.buffer); 871 fputbytes(out, (char *)vartable.buffer, vartable.pbuffer-vartable.buffer); 872 873 /* File trailer */ 874 fputbytes(out, endsection, sizeof(endsection)); 875 fputbytes(out, filetrailer, sizeof(filetrailer)); 876 return (0); 877 } 878