less.h revision 240121
1/* $FreeBSD: stable/9/contrib/less/less.h 240121 2012-09-04 23:24:00Z delphij $ */ 2/* 3 * Copyright (C) 1984-2012 Mark Nudelman 4 * 5 * You may distribute under the terms of either the GNU General Public 6 * License or the Less License, as specified in the README file. 7 * 8 * For more information, see the README file. 9 */ 10 11#define NEWBOT 1 12 13/* 14 * Standard include file for "less". 15 */ 16 17/* 18 * Defines for MSDOS_COMPILER. 19 */ 20#define MSOFTC 1 /* Microsoft C */ 21#define BORLANDC 2 /* Borland C */ 22#define WIN32C 3 /* Windows (Borland C or Microsoft C) */ 23#define DJGPPC 4 /* DJGPP C */ 24 25/* 26 * Include the file of compile-time options. 27 * The <> make cc search for it in -I., not srcdir. 28 */ 29#include <defines.h> 30 31#ifdef _SEQUENT_ 32/* 33 * Kludge for Sequent Dynix systems that have sigsetmask, but 34 * it's not compatible with the way less calls it. 35 * {{ Do other systems need this? }} 36 */ 37#undef HAVE_SIGSETMASK 38#endif 39 40/* 41 * Language details. 42 */ 43#if HAVE_VOID 44#define VOID_POINTER void * 45#else 46#define VOID_POINTER char * 47#define void int 48#endif 49#if HAVE_CONST 50#define constant const 51#else 52#define constant 53#endif 54 55#define public /* PUBLIC FUNCTION */ 56 57/* Library function declarations */ 58 59#if HAVE_SYS_TYPES_H 60#include <sys/types.h> 61#endif 62#if HAVE_STDIO_H 63#include <stdio.h> 64#endif 65#if HAVE_FCNTL_H 66#include <fcntl.h> 67#endif 68#if HAVE_UNISTD_H 69#include <unistd.h> 70#endif 71#if HAVE_CTYPE_H 72#include <ctype.h> 73#endif 74#if HAVE_WCTYPE_H 75#include <wctype.h> 76#endif 77#if HAVE_LIMITS_H 78#include <limits.h> 79#endif 80#if HAVE_STDLIB_H 81#include <stdlib.h> 82#endif 83#if HAVE_STRING_H 84#include <string.h> 85#endif 86 87/* OS-specific includes */ 88#ifdef _OSK 89#include <modes.h> 90#include <strings.h> 91#endif 92 93#ifdef __TANDEM 94#include <floss.h> 95#endif 96 97#if MSDOS_COMPILER==WIN32C || OS2 98#include <io.h> 99#endif 100 101#if MSDOS_COMPILER==DJGPPC 102#include <io.h> 103#include <sys/exceptn.h> 104#include <conio.h> 105#include <pc.h> 106#endif 107 108#if !HAVE_STDLIB_H 109char *getenv(); 110off_t lseek(); 111VOID_POINTER calloc(); 112void free(); 113#endif 114 115/* 116 * Simple lowercase test which can be used during option processing 117 * (before options are parsed which might tell us what charset to use). 118 */ 119#define ASCII_IS_UPPER(c) ((c) >= 'A' && (c) <= 'Z') 120#define ASCII_IS_LOWER(c) ((c) >= 'a' && (c) <= 'z') 121#define ASCII_TO_UPPER(c) ((c) - 'a' + 'A') 122#define ASCII_TO_LOWER(c) ((c) - 'A' + 'a') 123 124#undef IS_UPPER 125#undef IS_LOWER 126#undef TO_UPPER 127#undef TO_LOWER 128#undef IS_SPACE 129#undef IS_DIGIT 130 131#if HAVE_WCTYPE 132#define IS_UPPER(c) iswupper(c) 133#define IS_LOWER(c) iswlower(c) 134#define TO_UPPER(c) towupper(c) 135#define TO_LOWER(c) towlower(c) 136#else 137#if HAVE_UPPER_LOWER 138#define IS_UPPER(c) isupper((unsigned char) (c)) 139#define IS_LOWER(c) islower((unsigned char) (c)) 140#define TO_UPPER(c) toupper((unsigned char) (c)) 141#define TO_LOWER(c) tolower((unsigned char) (c)) 142#else 143#define IS_UPPER(c) ASCII_IS_UPPER(c) 144#define IS_LOWER(c) ASCII_IS_LOWER(c) 145#define TO_UPPER(c) ASCII_TO_UPPER(c) 146#define TO_LOWER(c) ASCII_TO_LOWER(c) 147#endif 148#endif 149 150#ifdef isspace 151#define IS_SPACE(c) isspace((unsigned char)(c)) 152#else 153#define IS_SPACE(c) ((c) == ' ' || (c) == '\t' || (c) == '\n' || (c) == '\r' || (c) == '\f') 154#endif 155 156#ifdef isdigit 157#define IS_DIGIT(c) isdigit((unsigned char)(c)) 158#else 159#define IS_DIGIT(c) ((c) >= '0' && (c) <= '9') 160#endif 161 162#define IS_CSI_START(c) (((LWCHAR)(c)) == ESC || (((LWCHAR)(c)) == CSI)) 163 164#ifndef NULL 165#define NULL 0 166#endif 167 168#ifndef TRUE 169#define TRUE 1 170#endif 171#ifndef FALSE 172#define FALSE 0 173#endif 174 175#define OPT_OFF 0 176#define OPT_ON 1 177#define OPT_ONPLUS 2 178 179#if !HAVE_MEMCPY 180#ifndef memcpy 181#define memcpy(to,from,len) bcopy((from),(to),(len)) 182#endif 183#endif 184 185#if HAVE_SNPRINTF 186#define SNPRINTF1(str, size, fmt, v1) snprintf((str), (size), (fmt), (v1)) 187#define SNPRINTF2(str, size, fmt, v1, v2) snprintf((str), (size), (fmt), (v1), (v2)) 188#define SNPRINTF3(str, size, fmt, v1, v2, v3) snprintf((str), (size), (fmt), (v1), (v2), (v3)) 189#define SNPRINTF4(str, size, fmt, v1, v2, v3, v4) snprintf((str), (size), (fmt), (v1), (v2), (v3), (v4)) 190#else 191/* Use unsafe sprintf if we don't have snprintf. */ 192#define SNPRINTF1(str, size, fmt, v1) sprintf((str), (fmt), (v1)) 193#define SNPRINTF2(str, size, fmt, v1, v2) sprintf((str), (fmt), (v1), (v2)) 194#define SNPRINTF3(str, size, fmt, v1, v2, v3) sprintf((str), (fmt), (v1), (v2), (v3)) 195#define SNPRINTF4(str, size, fmt, v1, v2, v3, v4) sprintf((str), (fmt), (v1), (v2), (v3), (v4)) 196#endif 197 198#define BAD_LSEEK ((off_t)-1) 199 200#ifndef SEEK_SET 201#define SEEK_SET 0 202#endif 203#ifndef SEEK_END 204#define SEEK_END 2 205#endif 206 207#ifndef CHAR_BIT 208#define CHAR_BIT 8 209#endif 210 211/* 212 * Upper bound on the string length of an integer converted to string. 213 * 302 / 1000 is ceil (log10 (2.0)). Subtract 1 for the sign bit; 214 * add 1 for integer division truncation; add 1 more for a minus sign. 215 */ 216#define INT_STRLEN_BOUND(t) ((sizeof(t) * CHAR_BIT - 1) * 302 / 1000 + 1 + 1) 217 218/* 219 * Special types and constants. 220 */ 221typedef unsigned long LWCHAR; 222typedef off_t POSITION; 223typedef off_t LINENUM; 224#define MIN_LINENUM_WIDTH 7 /* Min printing width of a line number */ 225#define MAX_UTF_CHAR_LEN 6 /* Max bytes in one UTF-8 char */ 226 227#define NULL_POSITION ((POSITION)(-1)) 228 229/* 230 * Flags for open() 231 */ 232#if MSDOS_COMPILER || OS2 233#define OPEN_READ (O_RDONLY|O_BINARY) 234#else 235#ifdef _OSK 236#define OPEN_READ (S_IREAD) 237#else 238#ifdef O_RDONLY 239#define OPEN_READ (O_RDONLY) 240#else 241#define OPEN_READ (0) 242#endif 243#endif 244#endif 245 246#if defined(O_WRONLY) && defined(O_APPEND) 247#define OPEN_APPEND (O_APPEND|O_WRONLY) 248#else 249#ifdef _OSK 250#define OPEN_APPEND (S_IWRITE) 251#else 252#define OPEN_APPEND (1) 253#endif 254#endif 255 256/* 257 * Set a file descriptor to binary mode. 258 */ 259#if MSDOS_COMPILER==MSOFTC 260#define SET_BINARY(f) _setmode(f, _O_BINARY); 261#else 262#if MSDOS_COMPILER || OS2 263#define SET_BINARY(f) setmode(f, O_BINARY) 264#else 265#define SET_BINARY(f) 266#endif 267#endif 268 269/* 270 * Does the shell treat "?" as a metacharacter? 271 */ 272#if MSDOS_COMPILER || OS2 || _OSK 273#define SHELL_META_QUEST 0 274#else 275#define SHELL_META_QUEST 1 276#endif 277 278#define SPACES_IN_FILENAMES 1 279 280/* 281 * An IFILE represents an input file. 282 */ 283#define IFILE VOID_POINTER 284#define NULL_IFILE ((IFILE)NULL) 285 286/* 287 * The structure used to represent a "screen position". 288 * This consists of a file position, and a screen line number. 289 * The meaning is that the line starting at the given file 290 * position is displayed on the ln-th line of the screen. 291 * (Screen lines before ln are empty.) 292 */ 293struct scrpos 294{ 295 POSITION pos; 296 int ln; 297}; 298 299typedef union parg 300{ 301 char *p_string; 302 int p_int; 303 LINENUM p_linenum; 304} PARG; 305 306#define NULL_PARG ((PARG *)NULL) 307 308struct textlist 309{ 310 char *string; 311 char *endstring; 312}; 313 314#define EOI (-1) 315 316#define READ_INTR (-2) 317 318/* A fraction is represented by an int n; the fraction is n/NUM_FRAC_DENOM */ 319#define NUM_FRAC_DENOM 1000000 320#define NUM_LOG_FRAC_DENOM 6 321 322/* How quiet should we be? */ 323#define NOT_QUIET 0 /* Ring bell at eof and for errors */ 324#define LITTLE_QUIET 1 /* Ring bell only for errors */ 325#define VERY_QUIET 2 /* Never ring bell */ 326 327/* How should we prompt? */ 328#define PR_SHORT 0 /* Prompt with colon */ 329#define PR_MEDIUM 1 /* Prompt with message */ 330#define PR_LONG 2 /* Prompt with longer message */ 331 332/* How should we handle backspaces? */ 333#define BS_SPECIAL 0 /* Do special things for underlining and bold */ 334#define BS_NORMAL 1 /* \b treated as normal char; actually output */ 335#define BS_CONTROL 2 /* \b treated as control char; prints as ^H */ 336 337/* How should we search? */ 338#define SRCH_FORW (1 << 0) /* Search forward from current position */ 339#define SRCH_BACK (1 << 1) /* Search backward from current position */ 340#define SRCH_NO_MOVE (1 << 2) /* Highlight, but don't move */ 341#define SRCH_FIND_ALL (1 << 4) /* Find and highlight all matches */ 342#define SRCH_NO_MATCH (1 << 8) /* Search for non-matching lines */ 343#define SRCH_PAST_EOF (1 << 9) /* Search past end-of-file, into next file */ 344#define SRCH_FIRST_FILE (1 << 10) /* Search starting at the first file */ 345#define SRCH_NO_REGEX (1 << 12) /* Don't use regular expressions */ 346#define SRCH_FILTER (1 << 13) /* Search is for '&' (filter) command */ 347#define SRCH_AFTER_TARGET (1 << 14) /* Start search after the target line */ 348 349#define SRCH_REVERSE(t) (((t) & SRCH_FORW) ? \ 350 (((t) & ~SRCH_FORW) | SRCH_BACK) : \ 351 (((t) & ~SRCH_BACK) | SRCH_FORW)) 352 353/* */ 354#define NO_MCA 0 355#define MCA_DONE 1 356#define MCA_MORE 2 357 358#define CC_OK 0 /* Char was accepted & processed */ 359#define CC_QUIT 1 /* Char was a request to abort current cmd */ 360#define CC_ERROR 2 /* Char could not be accepted due to error */ 361#define CC_PASS 3 /* Char was rejected (internal) */ 362 363#define CF_QUIT_ON_ERASE 0001 /* Abort cmd if its entirely erased */ 364 365/* Special char bit-flags used to tell put_line() to do something special */ 366#define AT_NORMAL (0) 367#define AT_UNDERLINE (1 << 0) 368#define AT_BOLD (1 << 1) 369#define AT_BLINK (1 << 2) 370#define AT_STANDOUT (1 << 3) 371#define AT_ANSI (1 << 4) /* Content-supplied "ANSI" escape sequence */ 372#define AT_BINARY (1 << 5) /* LESS*BINFMT representation */ 373#define AT_HILITE (1 << 6) /* Internal highlights (e.g., for search) */ 374 375#if '0' == 240 376#define IS_EBCDIC_HOST 1 377#endif 378 379#if IS_EBCDIC_HOST 380/* 381 * Long definition for EBCDIC. 382 * Since the argument is usually a constant, this macro normally compiles 383 * into a constant. 384 */ 385#define CONTROL(c) ( \ 386 (c)=='[' ? '\047' : \ 387 (c)=='a' ? '\001' : \ 388 (c)=='b' ? '\002' : \ 389 (c)=='c' ? '\003' : \ 390 (c)=='d' ? '\067' : \ 391 (c)=='e' ? '\055' : \ 392 (c)=='f' ? '\056' : \ 393 (c)=='g' ? '\057' : \ 394 (c)=='h' ? '\026' : \ 395 (c)=='i' ? '\005' : \ 396 (c)=='j' ? '\025' : \ 397 (c)=='k' ? '\013' : \ 398 (c)=='l' ? '\014' : \ 399 (c)=='m' ? '\015' : \ 400 (c)=='n' ? '\016' : \ 401 (c)=='o' ? '\017' : \ 402 (c)=='p' ? '\020' : \ 403 (c)=='q' ? '\021' : \ 404 (c)=='r' ? '\022' : \ 405 (c)=='s' ? '\023' : \ 406 (c)=='t' ? '\074' : \ 407 (c)=='u' ? '\075' : \ 408 (c)=='v' ? '\062' : \ 409 (c)=='w' ? '\046' : \ 410 (c)=='x' ? '\030' : \ 411 (c)=='y' ? '\031' : \ 412 (c)=='z' ? '\077' : \ 413 (c)=='A' ? '\001' : \ 414 (c)=='B' ? '\002' : \ 415 (c)=='C' ? '\003' : \ 416 (c)=='D' ? '\067' : \ 417 (c)=='E' ? '\055' : \ 418 (c)=='F' ? '\056' : \ 419 (c)=='G' ? '\057' : \ 420 (c)=='H' ? '\026' : \ 421 (c)=='I' ? '\005' : \ 422 (c)=='J' ? '\025' : \ 423 (c)=='K' ? '\013' : \ 424 (c)=='L' ? '\014' : \ 425 (c)=='M' ? '\015' : \ 426 (c)=='N' ? '\016' : \ 427 (c)=='O' ? '\017' : \ 428 (c)=='P' ? '\020' : \ 429 (c)=='Q' ? '\021' : \ 430 (c)=='R' ? '\022' : \ 431 (c)=='S' ? '\023' : \ 432 (c)=='T' ? '\074' : \ 433 (c)=='U' ? '\075' : \ 434 (c)=='V' ? '\062' : \ 435 (c)=='W' ? '\046' : \ 436 (c)=='X' ? '\030' : \ 437 (c)=='Y' ? '\031' : \ 438 (c)=='Z' ? '\077' : \ 439 (c)=='|' ? '\031' : \ 440 (c)=='\\' ? '\034' : \ 441 (c)=='^' ? '\036' : \ 442 (c)&077) 443#else 444#define CONTROL(c) ((c)&037) 445#endif /* IS_EBCDIC_HOST */ 446 447#define ESC CONTROL('[') 448#define CSI ((unsigned char)'\233') 449 450#if _OSK_MWC32 451#define LSIGNAL(sig,func) os9_signal(sig,func) 452#else 453#define LSIGNAL(sig,func) signal(sig,func) 454#endif 455 456#if HAVE_SIGPROCMASK 457#if HAVE_SIGSET_T 458#else 459#undef HAVE_SIGPROCMASK 460#endif 461#endif 462#if HAVE_SIGPROCMASK 463#if HAVE_SIGEMPTYSET 464#else 465#undef sigemptyset 466#define sigemptyset(mp) *(mp) = 0 467#endif 468#endif 469 470#define S_INTERRUPT 01 471#define S_STOP 02 472#define S_WINCH 04 473#define ABORT_SIGS() (sigs & (S_INTERRUPT|S_STOP)) 474 475#define QUIT_OK 0 476#define QUIT_ERROR 1 477#define QUIT_INTERRUPT 2 478#define QUIT_SAVED_STATUS (-1) 479 480#define FOLLOW_DESC 0 481#define FOLLOW_NAME 1 482 483/* filestate flags */ 484#define CH_CANSEEK 001 485#define CH_KEEPOPEN 002 486#define CH_POPENED 004 487#define CH_HELPFILE 010 488#define CH_NODATA 020 /* Special case for zero length files */ 489 490 491#define ch_zero() ((POSITION)0) 492 493#define FAKE_HELPFILE "@/\\less/\\help/\\file/\\@" 494#define FAKE_EMPTYFILE "@/\\less/\\empty/\\file/\\@" 495 496/* Flags for cvt_text */ 497#define CVT_TO_LC 01 /* Convert upper-case to lower-case */ 498#define CVT_BS 02 /* Do backspace processing */ 499#define CVT_CRLF 04 /* Remove CR after LF */ 500#define CVT_ANSI 010 /* Remove ANSI escape sequences */ 501 502#include "funcs.h" 503 504/* Functions not included in funcs.h */ 505void postoa(); 506void linenumtoa(); 507void inttoa(); 508