1 /* 2 * Copyright (C) 1984-2026 Mark Nudelman 3 * 4 * You may distribute under the terms of either the GNU General Public 5 * License or the Less License, as specified in the README file. 6 * 7 * For more information, see the README file. 8 */ 9 10 /* 11 * Standard include file for "less". 12 */ 13 14 /* 15 * Defines for MSDOS_COMPILER. 16 */ 17 #define MSOFTC 1 /* Microsoft C */ 18 #define BORLANDC 2 /* Borland C */ 19 #define WIN32C 3 /* Windows (Borland C or Microsoft C) */ 20 #define DJGPPC 4 /* DJGPP C */ 21 22 /* 23 * Include the file of compile-time options. 24 * The <> make cc search for it in -I., not srcdir. 25 */ 26 #include <defines.h> 27 28 #ifdef _SEQUENT_ 29 /* 30 * Kludge for Sequent Dynix systems that have sigsetmask, but 31 * it's not compatible with the way less calls it. 32 * {{ Do other systems need this? }} 33 */ 34 #undef HAVE_SIGSETMASK 35 #endif 36 37 38 /* Library function declarations */ 39 40 #if HAVE_SYS_TYPES_H 41 #include <sys/types.h> 42 #endif 43 #if HAVE_STDIO_H 44 #include <stdio.h> 45 #endif 46 #if HAVE_FCNTL_H 47 #include <fcntl.h> 48 #endif 49 #if HAVE_UNISTD_H 50 #include <unistd.h> 51 #endif 52 #if HAVE_CTYPE_H 53 #include <ctype.h> 54 #endif 55 #if HAVE_LIMITS_H 56 #include <limits.h> 57 #endif 58 #if HAVE_STDINT_H 59 #include <stdint.h> 60 #endif 61 #if HAVE_STDLIB_H 62 #include <stdlib.h> 63 #endif 64 #if HAVE_STRING_H 65 #include <string.h> 66 #endif 67 68 #if HAVE_STDCKDINT_H 69 #include <stdckdint.h> 70 #else 71 /* 72 * These substitutes for C23 stdckdint macros do not set *R on overflow, 73 * and they assume A and B are nonnegative. That is good enough for us. 74 */ 75 #define ckd_add(r, a, b) help_ckd_add(r, (uintmax)(a), (uintmax)(b), sizeof *(r), signed_expr(*(r))) 76 #define ckd_mul(r, a, b) help_ckd_mul(r, (uintmax)(a), (uintmax)(b), sizeof *(r), signed_expr(*(r))) 77 /* True if the integer expression E, after promotion, is signed. */ 78 #define signed_expr(e) ((TRUE ? 0 : e) - 1 < 0) 79 #endif 80 #define muldiv(val,num,den) umuldiv((uintmax)(val), (uintmax)(num), (uintmax)(den)) 81 82 #include "lang.h" 83 84 #if defined UINTMAX_MAX 85 typedef uintmax_t uintmax; 86 #elif defined ULLONG_MAX 87 typedef unsigned long long uintmax; 88 #else 89 typedef unsigned long uintmax; 90 #endif 91 92 /* OS-specific includes */ 93 #ifdef _OSK 94 #include <modes.h> 95 #include <strings.h> 96 #endif 97 98 #ifdef __TANDEM 99 #include <floss.h> 100 #endif 101 102 #if MSDOS_COMPILER==WIN32C || OS2 103 #include <io.h> 104 #endif 105 106 #if MSDOS_COMPILER==DJGPPC 107 #include <io.h> 108 #include <sys/exceptn.h> 109 #include <conio.h> 110 #include <pc.h> 111 #endif 112 113 #if !HAVE_STDLIB_H 114 char *getenv(); 115 off_t lseek(); 116 void *calloc(); 117 void free(); 118 #endif 119 120 /* 121 * Simple lowercase test which can be used during option processing 122 * (before options are parsed which might tell us what charset to use). 123 */ 124 #define ASCII_IS_UPPER(c) ((c) >= 'A' && (c) <= 'Z') 125 #define ASCII_IS_LOWER(c) ((c) >= 'a' && (c) <= 'z') 126 #define ASCII_TO_UPPER(c) ((c) - 'a' + 'A') 127 #define ASCII_TO_LOWER(c) ((c) - 'A' + 'a') 128 129 #undef IS_UPPER 130 #undef IS_LOWER 131 #undef TO_UPPER 132 #undef TO_LOWER 133 #undef IS_SPACE 134 #undef IS_DIGIT 135 136 #if HAVE_WCTYPE 137 #define IS_UPPER(c) iswupper((wint_t) (c)) 138 #define IS_LOWER(c) iswlower((wint_t) (c)) 139 #define TO_UPPER(c) towupper((wint_t) (c)) 140 #define TO_LOWER(c) towlower((wint_t) (c)) 141 #else 142 #if HAVE_UPPER_LOWER 143 #define IS_UPPER(c) (is_ascii_char(c) && isupper((unsigned char) (c))) 144 #define IS_LOWER(c) (is_ascii_char(c) && islower((unsigned char) (c))) 145 #define TO_UPPER(c) (is_ascii_char(c) ? toupper((unsigned char) (c)) : (c)) 146 #define TO_LOWER(c) (is_ascii_char(c) ? tolower((unsigned char) (c)) : (c)) 147 #else 148 #define IS_UPPER(c) (is_ascii_char(c) && ASCII_IS_UPPER(c)) 149 #define IS_LOWER(c) (is_ascii_char(c) && ASCII_IS_LOWER(c)) 150 #define TO_UPPER(c) (is_ascii_char(c) ? ASCII_TO_UPPER(c) : (c)) 151 #define TO_LOWER(c) (is_ascii_char(c) ? ASCII_TO_LOWER(c) : (c)) 152 #endif 153 #endif 154 155 #ifdef isspace 156 #define IS_SPACE(c) isspace((unsigned char)(c)) 157 #else 158 #define IS_SPACE(c) ((c) == ' ' || (c) == '\t' || (c) == '\n' || (c) == '\r' || (c) == '\f') 159 #endif 160 161 #ifdef isdigit 162 #define IS_DIGIT(c) isdigit((unsigned char)(c)) 163 #else 164 #define IS_DIGIT(c) ((c) >= '0' && (c) <= '9') 165 #endif 166 167 #define IS_CSI_START(c) (control_char(c) && (((LWCHAR)(c)) == ESC || (((LWCHAR)(c)) == CSI))) 168 169 #define OPT_OFF 0 170 #define OPT_ON 1 171 #define OPT_ONPLUS 2 172 173 #if !HAVE_MEMCPY 174 #ifndef memcpy 175 #define memcpy(to,from,len) bcopy((from),(to),(len)) 176 #endif 177 #endif 178 179 #if HAVE_SNPRINTF 180 #define SNPRINTF1(str, size, fmt, v1) snprintf((str), (size), (fmt), (v1)) 181 #define SNPRINTF2(str, size, fmt, v1, v2) snprintf((str), (size), (fmt), (v1), (v2)) 182 #define SNPRINTF3(str, size, fmt, v1, v2, v3) snprintf((str), (size), (fmt), (v1), (v2), (v3)) 183 #define SNPRINTF4(str, size, fmt, v1, v2, v3, v4) snprintf((str), (size), (fmt), (v1), (v2), (v3), (v4)) 184 #else 185 /* Use unsafe sprintf if we don't have snprintf. */ 186 #define SNPRINTF1(str, size, fmt, v1) sprintf((str), (fmt), (v1)) 187 #define SNPRINTF2(str, size, fmt, v1, v2) sprintf((str), (fmt), (v1), (v2)) 188 #define SNPRINTF3(str, size, fmt, v1, v2, v3) sprintf((str), (fmt), (v1), (v2), (v3)) 189 #define SNPRINTF4(str, size, fmt, v1, v2, v3, v4) sprintf((str), (fmt), (v1), (v2), (v3), (v4)) 190 #endif 191 192 #define BAD_LSEEK ((off_t)-1) 193 194 #ifndef SEEK_SET 195 #define SEEK_SET 0 196 #endif 197 #ifndef SEEK_END 198 #define SEEK_END 2 199 #endif 200 201 #ifndef CHAR_BIT 202 #define CHAR_BIT 8 203 #endif 204 205 /* 206 * Upper bound on the string length of an integer converted to string. 207 * 302 / 1000 is ceil (log10 (2.0)). Subtract 1 for the sign bit; 208 * add 1 for integer division truncation; add 1 more for a minus sign. 209 */ 210 #define INT_STRLEN_BOUND(t) ((sizeof(t) * CHAR_BIT - 1) * 302 / 1000 + 1 + 1) 211 212 /* 213 * Special types and constants. 214 */ 215 typedef unsigned long LWCHAR; 216 #if defined(__MINGW32__) || (defined(_MSC_VER) && _MSC_VER >= 1500) 217 typedef long long less_off_t; /* __int64 */ 218 typedef struct _stat64 less_stat_t; 219 #define less_fstat _fstat64 220 #define less_stat _stat64 221 #define less_lseek _lseeki64 222 #else 223 typedef off_t less_off_t; 224 typedef struct stat less_stat_t; 225 #define less_fstat fstat 226 #define less_stat stat 227 #define less_lseek lseek 228 #endif 229 typedef less_off_t POSITION; 230 typedef off_t LINENUM; 231 #define MIN_LINENUM_WIDTH 7 /* Default min printing width of a line number */ 232 #define MAX_LINENUM_WIDTH 16 /* Max width of a line number */ 233 #define MAX_STATUSCOL_WIDTH 4 /* Max width of the status column */ 234 #define MAX_UTF_CHAR_LEN 6 /* Max bytes in one UTF-8 char */ 235 #define MAX_PRCHAR_LEN 31 /* Max chars in prchar() result */ 236 237 #define NULL_POSITION ((POSITION)(-1)) 238 239 /* 240 * Flags for open() 241 */ 242 #if MSDOS_COMPILER || OS2 243 #define OPEN_READ (O_RDONLY|O_BINARY) 244 #else 245 #ifdef _OSK 246 #define OPEN_READ (S_IREAD) 247 #else 248 #ifdef O_RDONLY 249 #define OPEN_READ (O_RDONLY) 250 #else 251 #define OPEN_READ (0) 252 #endif 253 #endif 254 #endif 255 256 #if defined(O_WRONLY) && defined(O_APPEND) 257 #define OPEN_APPEND (O_APPEND|O_WRONLY) 258 #else 259 #ifdef _OSK 260 #define OPEN_APPEND (S_IWRITE) 261 #else 262 #define OPEN_APPEND (1) 263 #endif 264 #endif 265 266 /* Use iread() to read tty? */ 267 #if !MSDOS_COMPILER || MSDOS_COMPILER == DJGPPC 268 #define LESS_IREAD_TTY 1 269 #endif 270 271 /* 272 * Flags for creat() 273 */ 274 #if MSDOS_COMPILER 275 #define CREAT_RW (S_IREAD|S_IWRITE) 276 #else 277 #define CREAT_RW 0644 278 #endif 279 280 /* 281 * Set a file descriptor to binary mode. 282 */ 283 #if MSDOS_COMPILER==MSOFTC 284 #define SET_BINARY(f) _setmode(f, _O_BINARY); 285 #else 286 #if MSDOS_COMPILER || OS2 287 #define SET_BINARY(f) setmode(f, O_BINARY) 288 #else 289 #define SET_BINARY(f) 290 #endif 291 #endif 292 293 #define SPACES_IN_FILENAMES 1 294 295 /* 296 * An IFILE represents an input file. 297 */ 298 #define IFILE void* 299 #define NULL_IFILE ((IFILE)NULL) 300 301 /* 302 * The structure used to represent a "screen position". 303 * This consists of a file position, and a screen line number. 304 * The meaning is that the line starting at the given file 305 * position is displayed on the ln-th line of the screen. 306 * (Screen lines before ln are empty.) 307 */ 308 struct scrpos 309 { 310 POSITION pos; 311 int ln; 312 }; 313 314 typedef union parg 315 { 316 constant char *p_string; 317 int p_int; 318 LINENUM p_linenum; 319 char p_char; 320 } PARG; 321 322 #define NULL_PARG ((PARG *)NULL) 323 324 struct textlist 325 { 326 char *string; 327 char *endstring; 328 }; 329 330 struct wchar_range 331 { 332 LWCHAR first, last; 333 }; 334 335 struct wchar_range_table 336 { 337 struct wchar_range *table; 338 unsigned int count; 339 }; 340 341 struct csl_bitmap_def 342 { 343 constant char *bit_name; 344 int bit_value; 345 }; 346 347 #if HAVE_POLL 348 typedef short POLL_EVENTS; 349 #endif 350 351 #define EOI (-1) 352 353 #define READ_ERR (-1) 354 #define READ_INTR (-2) 355 #define READ_AGAIN (-3) 356 357 /* 358 * A fraction is represented by a long n; the fraction is n/NUM_FRAC_DENOM. 359 * To avoid overflow problems, 0 <= n < NUM_FRAC_DENUM <= LONG_MAX/100. 360 */ 361 #define NUM_FRAC_DENOM 1000000 362 #define NUM_LOG_FRAC_DENOM 6 363 364 /* 365 * Max expected reasonable duration of a paste. 366 * Increasing this value avoids accidentally reenabling unwanted paste input 367 * in the middle of a very long paste but risks apparently frozen UI if the 368 * end bracket is missing. 369 */ 370 #define MAX_PASTE_IGNORE_SEC 5 371 372 /* How quiet should we be? */ 373 #define NOT_QUIET 0 /* Ring bell at eof and for errors */ 374 #define LITTLE_QUIET 1 /* Ring bell only for errors */ 375 #define VERY_QUIET 2 /* Never ring bell */ 376 377 /* How should we prompt? */ 378 #define PR_SHORT 0 /* Prompt with colon */ 379 #define PR_MEDIUM 1 /* Prompt with message */ 380 #define PR_LONG 2 /* Prompt with longer message */ 381 382 /* How should we handle backspaces? */ 383 #define BS_SPECIAL 0 /* Do special things for underlining and bold */ 384 #define BS_NORMAL 1 /* \b treated as normal char; actually output */ 385 #define BS_CONTROL 2 /* \b treated as control char; prints as ^H */ 386 387 /* How should we search? */ 388 #define SRCH_FORW (1 << 0) /* Search forward from current position */ 389 #define SRCH_BACK (1 << 1) /* Search backward from current position */ 390 #define SRCH_NO_MOVE (1 << 2) /* Highlight, but don't move */ 391 #define SRCH_INCR (1 << 3) /* Incremental search */ 392 #define SRCH_FIND_ALL (1 << 4) /* Find and highlight all matches */ 393 #define SRCH_NO_MATCH (1 << 8) /* Search for non-matching lines */ 394 #define SRCH_PAST_EOF (1 << 9) /* Search past end-of-file, into next file */ 395 #define SRCH_FIRST_FILE (1 << 10) /* Search starting at the first file */ 396 #define SRCH_NO_REGEX (1 << 12) /* Don't use regular expressions */ 397 #define SRCH_FILTER (1 << 13) /* Search is for '&' (filter) command */ 398 #define SRCH_AFTER_TARGET (1 << 14) /* Start search after the target line */ 399 #define SRCH_WRAP (1 << 15) /* Wrap-around search (continue at BOF/EOF) */ 400 #if OSC8_LINK 401 #define SRCH_OSC8 (1 << 16) /* */ 402 #endif 403 #define SRCH_SUBSEARCH(i) (1 << (17+(i))) /* Search for subpattern */ 404 /* {{ Depends on NUM_SEARCH_COLORS==5 }} */ 405 #define SRCH_SUBSEARCH_ALL (SRCH_SUBSEARCH(1)|SRCH_SUBSEARCH(2)|SRCH_SUBSEARCH(3)|SRCH_SUBSEARCH(4)|SRCH_SUBSEARCH(5)) 406 407 #define SRCH_REVERSE(t) (((t) & SRCH_FORW) ? \ 408 (((t) & ~SRCH_FORW) | SRCH_BACK) : \ 409 (((t) & ~SRCH_BACK) | SRCH_FORW)) 410 /* Parsing position in an OSC8 link: "\e]8;PARAMS;URI\e\\" (final "\e\\" may be "\7") */ 411 typedef enum osc8_state { 412 OSC_START, /* Waiting for initial \e */ 413 OSC_INTRO, /* Waiting for intro char, usually ']' */ 414 OSC_TYPENUM, /* Reading OS command type */ 415 OSC_STRING, /* Reading OS command string */ 416 OSC_END_CSI, /* Waiting for backslash after the final ESC. */ 417 OSC_END, /* At end */ 418 419 OSC8_PARAMS, /* In the OSC8 parameters */ 420 OSC8_URI, /* In the OSC8 URI */ 421 OSC8_NOT, /* This is not an OSC8 link */ 422 } osc8_state; 423 424 /* */ 425 #define NO_MCA 0 426 #define MCA_DONE 1 427 #define MCA_MORE 2 428 429 #define CC_OK 0 /* Char was accepted & processed */ 430 #define CC_QUIT 1 /* Char was a request to abort current cmd */ 431 #define CC_ERROR 2 /* Char could not be accepted due to error */ 432 #define CC_PASS 3 /* Char was rejected (internal) */ 433 434 #define CF_QUIT_ON_ERASE (1<<0) /* Abort cmd if its entirely erased */ 435 #define CF_OPTION (1<<1) /* A_OPT_TOGGLE */ 436 437 /* Special char bit-flags used to tell put_line() to do something special */ 438 #define AT_NORMAL (0) 439 #define AT_UNDERLINE (1 << 0) 440 #define AT_BOLD (1 << 1) 441 #define AT_BLINK (1 << 2) 442 #define AT_STANDOUT (1 << 3) 443 #define AT_ANSI (1 << 4) /* Content-supplied "ANSI" escape sequence */ 444 #define AT_BINARY (1 << 5) /* LESS*BINFMT representation */ 445 #define AT_HILITE (1 << 6) /* Internal highlights (e.g., for search) */ 446 #define AT_PLACEHOLDER (1 << 7) /* Placeholder for half of double-wide char */ 447 448 #define AT_COLOR_SHIFT 8 449 #define AT_COLOR ((~(unsigned)0) << AT_COLOR_SHIFT) 450 #define AT_COLOR_ATTN (1 << AT_COLOR_SHIFT) 451 #define AT_COLOR_BIN (2 << AT_COLOR_SHIFT) 452 #define AT_COLOR_CTRL (3 << AT_COLOR_SHIFT) 453 #define AT_COLOR_ERROR (4 << AT_COLOR_SHIFT) 454 #define AT_COLOR_LINENUM (5 << AT_COLOR_SHIFT) 455 #define AT_COLOR_MARK (6 << AT_COLOR_SHIFT) 456 #define AT_COLOR_PROMPT (7 << AT_COLOR_SHIFT) 457 #define AT_COLOR_RSCROLL (8 << AT_COLOR_SHIFT) 458 #define AT_COLOR_HEADER (9 << AT_COLOR_SHIFT) 459 #define AT_COLOR_SEARCH (10 << AT_COLOR_SHIFT) 460 #define AT_COLOR_TILDE (11 << AT_COLOR_SHIFT) 461 #define AT_COLOR_TARGET (12 << AT_COLOR_SHIFT) 462 #define AT_COLOR_SS_OFFSET 13 /* largest AT_COLOR_* value + 1 */ 463 #define NUM_SEARCH_COLORS 5 464 #define AT_NUM_COLORS (AT_COLOR_SS_OFFSET + NUM_SEARCH_COLORS) 465 #define AT_COLOR_SUBSEARCH(i) ((AT_COLOR_SS_OFFSET+(i)-1) << AT_COLOR_SHIFT) 466 467 typedef enum { CT_NULL, CT_4BIT, CT_6BIT } COLOR_TYPE; 468 469 typedef enum { 470 CV_BLUE = 1, 471 CV_GREEN = 2, 472 CV_RED = 4, 473 CV_BRIGHT = 8, 474 CV_NOCHANGE = -2, 475 CV_ERROR = -1 476 } COLOR_VALUE; 477 478 typedef enum { 479 CATTR_NULL = 0, 480 CATTR_STANDOUT = (1 << 0), 481 CATTR_BOLD = (1 << 1), 482 CATTR_UNDERLINE = (1 << 2), 483 CATTR_BLINK = (1 << 3), 484 } CHAR_ATTR; 485 486 /* ANSI states */ 487 typedef enum { 488 ANSI_NULL, 489 ANSI_MID, 490 ANSI_ERR, 491 ANSI_END, 492 } ansi_state; 493 494 #if '0' == 240 495 #define IS_EBCDIC_HOST 1 496 #endif 497 498 #if IS_EBCDIC_HOST 499 /* 500 * Long definition for EBCDIC. 501 * Since the argument is usually a constant, this macro normally compiles 502 * into a constant. 503 */ 504 #define CONTROL(c) ( \ 505 (c)=='[' ? '\047' : \ 506 (c)=='a' ? '\001' : \ 507 (c)=='b' ? '\002' : \ 508 (c)=='c' ? '\003' : \ 509 (c)=='d' ? '\067' : \ 510 (c)=='e' ? '\055' : \ 511 (c)=='f' ? '\056' : \ 512 (c)=='g' ? '\057' : \ 513 (c)=='h' ? '\026' : \ 514 (c)=='i' ? '\005' : \ 515 (c)=='j' ? '\025' : \ 516 (c)=='k' ? '\013' : \ 517 (c)=='l' ? '\014' : \ 518 (c)=='m' ? '\015' : \ 519 (c)=='n' ? '\016' : \ 520 (c)=='o' ? '\017' : \ 521 (c)=='p' ? '\020' : \ 522 (c)=='q' ? '\021' : \ 523 (c)=='r' ? '\022' : \ 524 (c)=='s' ? '\023' : \ 525 (c)=='t' ? '\074' : \ 526 (c)=='u' ? '\075' : \ 527 (c)=='v' ? '\062' : \ 528 (c)=='w' ? '\046' : \ 529 (c)=='x' ? '\030' : \ 530 (c)=='y' ? '\031' : \ 531 (c)=='z' ? '\077' : \ 532 (c)=='A' ? '\001' : \ 533 (c)=='B' ? '\002' : \ 534 (c)=='C' ? '\003' : \ 535 (c)=='D' ? '\067' : \ 536 (c)=='E' ? '\055' : \ 537 (c)=='F' ? '\056' : \ 538 (c)=='G' ? '\057' : \ 539 (c)=='H' ? '\026' : \ 540 (c)=='I' ? '\005' : \ 541 (c)=='J' ? '\025' : \ 542 (c)=='K' ? '\013' : \ 543 (c)=='L' ? '\014' : \ 544 (c)=='M' ? '\015' : \ 545 (c)=='N' ? '\016' : \ 546 (c)=='O' ? '\017' : \ 547 (c)=='P' ? '\020' : \ 548 (c)=='Q' ? '\021' : \ 549 (c)=='R' ? '\022' : \ 550 (c)=='S' ? '\023' : \ 551 (c)=='T' ? '\074' : \ 552 (c)=='U' ? '\075' : \ 553 (c)=='V' ? '\062' : \ 554 (c)=='W' ? '\046' : \ 555 (c)=='X' ? '\030' : \ 556 (c)=='Y' ? '\031' : \ 557 (c)=='Z' ? '\077' : \ 558 (c)=='|' ? '\031' : \ 559 (c)=='\\' ? '\034' : \ 560 (c)=='^' ? '\036' : \ 561 (c)&077) 562 #else 563 #define CONTROL(c) ((c)&037) 564 #endif /* IS_EBCDIC_HOST */ 565 566 #define ESC CONTROL('[') 567 #define ESCS "\33" 568 #define CSI ((unsigned char)'\233') 569 #define VARSEL_15 ((LWCHAR)0xFE0E) /* VARIATION SELECTOR 15 */ 570 #define VARSEL_16 ((LWCHAR)0xFE0F) /* VARIATION SELECTOR 16 */ 571 572 #if _OSK_MWC32 573 #define LSIGNAL(sig,func) os9_signal(sig,func) 574 #else 575 #define LSIGNAL(sig,func) signal(sig,func) 576 #endif 577 578 #if HAVE_SIGPROCMASK 579 #if HAVE_SIGSET_T 580 #else 581 #undef HAVE_SIGPROCMASK 582 #endif 583 #endif 584 #if HAVE_SIGPROCMASK 585 #if HAVE_SIGEMPTYSET 586 #else 587 #undef sigemptyset 588 #define sigemptyset(mp) *(mp) = 0 589 #endif 590 #endif 591 592 #define S_INTERRUPT (1<<0) 593 #define S_SWINTERRUPT (1<<1) 594 #define S_STOP (1<<2) 595 #define S_WINCH (1<<3) 596 #define ABORT_SIGS() (sigs & (S_INTERRUPT|S_SWINTERRUPT|S_STOP)) 597 598 #ifdef EXIT_SUCCESS 599 #define QUIT_OK EXIT_SUCCESS 600 #else 601 #define QUIT_OK 0 602 #endif 603 #ifdef EXIT_FAILURE 604 #define QUIT_ERROR EXIT_FAILURE 605 #define QUIT_INTERRUPT (EXIT_FAILURE+1) 606 #else 607 #define QUIT_ERROR 1 608 #define QUIT_INTERRUPT 2 609 #endif 610 #define QUIT_SAVED_STATUS (-1) 611 612 #define FOLLOW_DESC 0 613 #define FOLLOW_NAME 1 614 615 /* filestate flags */ 616 #define CH_CANSEEK 001 617 #define CH_KEEPOPEN 002 618 #define CH_POPENED 004 619 #define CH_HELPFILE 010 620 #define CH_NODATA 020 /* Special case for zero length files */ 621 #define CH_NOTRUSTSIZE 040 /* For files that claim 0 length size falsely */ 622 623 #define ch_zero() ((POSITION)0) 624 625 #define FAKE_HELPFILE "@/\\less/\\help/\\file/\\@" 626 #define FAKE_EMPTYFILE "@/\\less/\\empty/\\file/\\@" 627 628 /* Flags for cvt_text */ 629 #define CVT_TO_LC 01 /* Convert upper-case to lower-case */ 630 #define CVT_BS 02 /* Do backspace processing */ 631 #define CVT_CRLF 04 /* Remove CR after LF */ 632 #define CVT_ANSI 010 /* Remove ANSI escape sequences */ 633 634 #if HAVE_TIME_T 635 #define time_type time_t 636 #else 637 #define time_type long 638 #endif 639 640 /* X11 mouse reporting definitions */ 641 #define X11MOUSE_BUTTON1 0 /* Left button press */ 642 #define X11MOUSE_BUTTON2 1 /* Middle button press */ 643 #define X11MOUSE_BUTTON3 2 /* Right button press */ 644 #define X11MOUSE_BUTTON_REL 3 /* Button release */ 645 #define X11MOUSE_DRAG 0x20 /* Drag with button down */ 646 #define X11MOUSE_WHEEL_UP 0x40 /* Wheel scroll up */ 647 #define X11MOUSE_WHEEL_DOWN 0x41 /* Wheel scroll down */ 648 #define X11MOUSE_WHEEL_LEFT 0x42 /* Wheel scroll left */ 649 #define X11MOUSE_WHEEL_RIGHT 0x43 /* Wheel scroll right */ 650 #define X11MOUSE_OFFSET 0x20 /* Added to button & pos bytes to create a char */ 651 652 /* Mouse features */ 653 #define EMOUSE_HSCROLL (1<<0) /* Horizontal scroll */ 654 #define EMOUSE_VSCROLL (1<<1) /* Vertical scroll */ 655 #define EMOUSE_HDRAG (1<<2) /* Horizontal drag */ 656 #define EMOUSE_VDRAG (1<<3) /* Vertical drag */ 657 #define EMOUSE_LCLICK (1<<4) /* Left click */ 658 #define EMOUSE_RCLICK (1<<5) /* Right click */ 659 #define EMOUSE_COUNT 6 660 661 /* Security features. */ 662 #define SF_EDIT (1<<1) /* Edit file (v) */ 663 #define SF_EXAMINE (1<<2) /* Examine file (:e) */ 664 #define SF_GLOB (1<<3) /* Expand file pattern */ 665 #define SF_HISTORY (1<<4) /* History file */ 666 #define SF_LESSKEY (1<<5) /* Lesskey files */ 667 #define SF_LESSOPEN (1<<6) /* LESSOPEN */ 668 #define SF_LOGFILE (1<<7) /* Log file (s, -o) */ 669 #define SF_PIPE (1<<8) /* Pipe (|) */ 670 #define SF_SHELL (1<<9) /* Shell command (!) */ 671 #define SF_STOP (1<<10) /* Stop signal */ 672 #define SF_TAGS (1<<11) /* Tags */ 673 #define SF_OSC8_OPEN (1<<12) /* OSC8 open */ 674 675 #if LESSTEST 676 #define LESS_DUMP_CHAR CONTROL(']') 677 #endif 678 679 struct mlist; 680 struct loption; 681 struct hilite_tree; 682 struct ansi_state; 683 #include "pattern.h" 684 #include "xbuf.h" 685 #include "funcs.h" 686 687 /* Functions not included in funcs.h */ 688 void postoa(POSITION, char*, int); 689 void linenumtoa(LINENUM, char*, int); 690 void inttoa(int, char*, int); 691 int lstrtoi(char*, char**, int); 692 POSITION lstrtopos(char*, char**, int); 693 unsigned long lstrtoul(char*, char**, int); 694 int lstrtoic(constant char*, constant char**, int); 695 POSITION lstrtoposc(constant char*, constant char**, int); 696 unsigned long lstrtoulc(constant char*, constant char**, int); 697 #if MSDOS_COMPILER==WIN32C 698 int pclose(FILE*); 699 #endif 700 #if !HAVE_STRCHR 701 char * strchr(char *s, char c); 702 #endif 703 #if !HAVE_MEMCPY 704 void * memcpy(void *dst, constant void *src, size_t len); 705 #endif 706 #if !HAVE_STRSTR 707 char * strstr(constant char *haystack, constant char *needle); 708 #endif 709