1/* $NetBSD: less.h,v 1.2 2011/07/03 19:51:26 tron Exp $ */ 2 3/* 4 * Copyright (C) 1984-2011 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 about less, or for information on how to 10 * contact the author, see the README file. 11 */ 12 13#define NEWBOT 1 14 15/* 16 * Standard include file for "less". 17 */ 18 19/* 20 * Defines for MSDOS_COMPILER. 21 */ 22#define MSOFTC 1 /* Microsoft C */ 23#define BORLANDC 2 /* Borland C */ 24#define WIN32C 3 /* Windows (Borland C or Microsoft C) */ 25#define DJGPPC 4 /* DJGPP C */ 26 27/* 28 * Include the file of compile-time options. 29 * The <> make cc search for it in -I., not srcdir. 30 */ 31#include <defines.h> 32 33#ifdef _SEQUENT_ 34/* 35 * Kludge for Sequent Dynix systems that have sigsetmask, but 36 * it's not compatible with the way less calls it. 37 * {{ Do other systems need this? }} 38 */ 39#undef HAVE_SIGSETMASK 40#endif 41 42/* 43 * Language details. 44 */ 45#if HAVE_VOID 46#define VOID_POINTER void * 47#else 48#define VOID_POINTER char * 49#define void int 50#endif 51#if HAVE_CONST 52#define constant const 53#else 54#define constant 55#endif 56 57#define public /* PUBLIC FUNCTION */ 58 59/* Library function declarations */ 60 61#if HAVE_SYS_TYPES_H 62#include <sys/types.h> 63#endif 64#if HAVE_STDIO_H 65#include <stdio.h> 66#endif 67#if HAVE_FCNTL_H 68#include <fcntl.h> 69#endif 70#if HAVE_UNISTD_H 71#include <unistd.h> 72#endif 73#if HAVE_CTYPE_H 74#include <ctype.h> 75#endif 76#if HAVE_WCTYPE_H 77#include <wctype.h> 78#endif 79#if HAVE_LIMITS_H 80#include <limits.h> 81#endif 82#if HAVE_STDLIB_H 83#include <stdlib.h> 84#endif 85#if HAVE_STRING_H 86#include <string.h> 87#endif 88 89/* OS-specific includes */ 90#ifdef _OSK 91#include <modes.h> 92#include <strings.h> 93#endif 94 95#ifdef __TANDEM 96#include <floss.h> 97#endif 98 99#if MSDOS_COMPILER==WIN32C || OS2 100#include <io.h> 101#endif 102 103#if MSDOS_COMPILER==DJGPPC 104#include <io.h> 105#include <sys/exceptn.h> 106#include <conio.h> 107#include <pc.h> 108#endif 109 110#if !HAVE_STDLIB_H 111char *getenv(); 112off_t lseek(); 113VOID_POINTER calloc(); 114void free(); 115#endif 116 117/* 118 * Simple lowercase test which can be used during option processing 119 * (before options are parsed which might tell us what charset to use). 120 */ 121#define ASCII_IS_UPPER(c) ((c) >= 'A' && (c) <= 'Z') 122#define ASCII_IS_LOWER(c) ((c) >= 'a' && (c) <= 'z') 123#define ASCII_TO_UPPER(c) ((c) - 'a' + 'A') 124#define ASCII_TO_LOWER(c) ((c) - 'A' + 'a') 125 126#undef IS_UPPER 127#undef IS_LOWER 128#undef TO_UPPER 129#undef TO_LOWER 130#undef IS_SPACE 131#undef IS_DIGIT 132 133#if HAVE_WCTYPE 134#define IS_UPPER(c) iswupper(c) 135#define IS_LOWER(c) iswlower(c) 136#define TO_UPPER(c) towupper(c) 137#define TO_LOWER(c) towlower(c) 138#else 139#if HAVE_UPPER_LOWER 140#define IS_UPPER(c) isupper((unsigned char) (c)) 141#define IS_LOWER(c) islower((unsigned char) (c)) 142#define TO_UPPER(c) toupper((unsigned char) (c)) 143#define TO_LOWER(c) tolower((unsigned char) (c)) 144#else 145#define IS_UPPER(c) ASCII_IS_UPPER(c) 146#define IS_LOWER(c) ASCII_IS_LOWER(c) 147#define TO_UPPER(c) ASCII_TO_UPPER(c) 148#define TO_LOWER(c) ASCII_TO_LOWER(c) 149#endif 150#endif 151 152#ifdef isspace 153#define IS_SPACE(c) isspace((unsigned char)(c)) 154#else 155#define IS_SPACE(c) ((c) == ' ' || (c) == '\t' || (c) == '\n' || (c) == '\r' || (c) == '\f') 156#endif 157 158#ifdef isdigit 159#define IS_DIGIT(c) isdigit((unsigned char)(c)) 160#else 161#define IS_DIGIT(c) ((c) >= '0' && (c) <= '9') 162#endif 163 164#define IS_CSI_START(c) (((LWCHAR)(c)) == ESC || (((LWCHAR)(c)) == CSI)) 165 166#ifndef NULL 167#define NULL 0 168#endif 169 170#ifndef TRUE 171#define TRUE 1 172#endif 173#ifndef FALSE 174#define FALSE 0 175#endif 176 177#define OPT_OFF 0 178#define OPT_ON 1 179#define OPT_ONPLUS 2 180 181#if !HAVE_MEMCPY 182#ifndef memcpy 183#define memcpy(to,from,len) bcopy((from),(to),(len)) 184#endif 185#endif 186 187#if HAVE_SNPRINTF 188#define SNPRINTF1(str, size, fmt, v1) snprintf((str), (size), (fmt), (v1)) 189#define SNPRINTF2(str, size, fmt, v1, v2) snprintf((str), (size), (fmt), (v1), (v2)) 190#define SNPRINTF3(str, size, fmt, v1, v2, v3) snprintf((str), (size), (fmt), (v1), (v2), (v3)) 191#define SNPRINTF4(str, size, fmt, v1, v2, v3, v4) snprintf((str), (size), (fmt), (v1), (v2), (v3), (v4)) 192#else 193/* Use unsafe sprintf if we don't have snprintf. */ 194#define SNPRINTF1(str, size, fmt, v1) sprintf((str), (fmt), (v1)) 195#define SNPRINTF2(str, size, fmt, v1, v2) sprintf((str), (fmt), (v1), (v2)) 196#define SNPRINTF3(str, size, fmt, v1, v2, v3) sprintf((str), (fmt), (v1), (v2), (v3)) 197#define SNPRINTF4(str, size, fmt, v1, v2, v3, v4) sprintf((str), (fmt), (v1), (v2), (v3), (v4)) 198#endif 199 200#define BAD_LSEEK ((off_t)-1) 201 202#ifndef SEEK_SET 203#define SEEK_SET 0 204#endif 205#ifndef SEEK_END 206#define SEEK_END 2 207#endif 208 209#ifndef CHAR_BIT 210#define CHAR_BIT 8 211#endif 212 213/* 214 * Upper bound on the string length of an integer converted to string. 215 * 302 / 1000 is ceil (log10 (2.0)). Subtract 1 for the sign bit; 216 * add 1 for integer division truncation; add 1 more for a minus sign. 217 */ 218#define INT_STRLEN_BOUND(t) ((sizeof(t) * CHAR_BIT - 1) * 302 / 1000 + 1 + 1) 219 220/* 221 * Special types and constants. 222 */ 223typedef unsigned long LWCHAR; 224typedef off_t POSITION; 225typedef off_t LINENUM; 226#define MIN_LINENUM_WIDTH 7 /* Min printing width of a line number */ 227#define MAX_UTF_CHAR_LEN 6 /* Max bytes in one UTF-8 char */ 228 229#define NULL_POSITION ((POSITION)(-1)) 230 231/* 232 * Flags for open() 233 */ 234#if MSDOS_COMPILER || OS2 235#define OPEN_READ (O_RDONLY|O_BINARY) 236#else 237#ifdef _OSK 238#define OPEN_READ (S_IREAD) 239#else 240#ifdef O_RDONLY 241#define OPEN_READ (O_RDONLY) 242#else 243#define OPEN_READ (0) 244#endif 245#endif 246#endif 247 248#if defined(O_WRONLY) && defined(O_APPEND) 249#define OPEN_APPEND (O_APPEND|O_WRONLY) 250#else 251#ifdef _OSK 252#define OPEN_APPEND (S_IWRITE) 253#else 254#define OPEN_APPEND (1) 255#endif 256#endif 257 258/* 259 * Set a file descriptor to binary mode. 260 */ 261#if MSDOS_COMPILER==MSOFTC 262#define SET_BINARY(f) _setmode(f, _O_BINARY); 263#else 264#if MSDOS_COMPILER || OS2 265#define SET_BINARY(f) setmode(f, O_BINARY) 266#else 267#define SET_BINARY(f) 268#endif 269#endif 270 271/* 272 * Does the shell treat "?" as a metacharacter? 273 */ 274#if MSDOS_COMPILER || OS2 || _OSK 275#define SHELL_META_QUEST 0 276#else 277#define SHELL_META_QUEST 1 278#endif 279 280#define SPACES_IN_FILENAMES 1 281 282/* 283 * An IFILE represents an input file. 284 */ 285#define IFILE VOID_POINTER 286#define NULL_IFILE ((IFILE)NULL) 287 288/* 289 * The structure used to represent a "screen position". 290 * This consists of a file position, and a screen line number. 291 * The meaning is that the line starting at the given file 292 * position is displayed on the ln-th line of the screen. 293 * (Screen lines before ln are empty.) 294 */ 295struct scrpos 296{ 297 POSITION pos; 298 int ln; 299}; 300 301typedef union parg 302{ 303 constant char *p_string; 304 int p_int; 305 LINENUM p_linenum; 306} PARG; 307 308#define NULL_PARG ((PARG *)NULL) 309 310struct textlist 311{ 312 char *string; 313 char *endstring; 314}; 315 316#define EOI (-1) 317 318#define READ_INTR (-2) 319 320/* A fraction is represented by an int n; the fraction is n/NUM_FRAC_DENOM */ 321#define NUM_FRAC_DENOM 1000000 322#define NUM_LOG_FRAC_DENOM 6 323 324/* How quiet should we be? */ 325#define NOT_QUIET 0 /* Ring bell at eof and for errors */ 326#define LITTLE_QUIET 1 /* Ring bell only for errors */ 327#define VERY_QUIET 2 /* Never ring bell */ 328 329/* How should we prompt? */ 330#define PR_SHORT 0 /* Prompt with colon */ 331#define PR_MEDIUM 1 /* Prompt with message */ 332#define PR_LONG 2 /* Prompt with longer message */ 333 334/* How should we handle backspaces? */ 335#define BS_SPECIAL 0 /* Do special things for underlining and bold */ 336#define BS_NORMAL 1 /* \b treated as normal char; actually output */ 337#define BS_CONTROL 2 /* \b treated as control char; prints as ^H */ 338 339/* How should we search? */ 340#define SRCH_FORW (1 << 0) /* Search forward from current position */ 341#define SRCH_BACK (1 << 1) /* Search backward from current position */ 342#define SRCH_NO_MOVE (1 << 2) /* Highlight, but don't move */ 343#define SRCH_FIND_ALL (1 << 4) /* Find and highlight all matches */ 344#define SRCH_NO_MATCH (1 << 8) /* Search for non-matching lines */ 345#define SRCH_PAST_EOF (1 << 9) /* Search past end-of-file, into next file */ 346#define SRCH_FIRST_FILE (1 << 10) /* Search starting at the first file */ 347#define SRCH_NO_REGEX (1 << 12) /* Don't use regular expressions */ 348#define SRCH_FILTER (1 << 13) /* Search is for '&' (filter) command */ 349#define SRCH_AFTER_TARGET (1 << 14) /* Start search after the target line */ 350 351#define SRCH_REVERSE(t) (((t) & SRCH_FORW) ? \ 352 (((t) & ~SRCH_FORW) | SRCH_BACK) : \ 353 (((t) & ~SRCH_BACK) | SRCH_FORW)) 354 355/* */ 356#define NO_MCA 0 357#define MCA_DONE 1 358#define MCA_MORE 2 359 360#define CC_OK 0 /* Char was accepted & processed */ 361#define CC_QUIT 1 /* Char was a request to abort current cmd */ 362#define CC_ERROR 2 /* Char could not be accepted due to error */ 363#define CC_PASS 3 /* Char was rejected (internal) */ 364 365#define CF_QUIT_ON_ERASE 0001 /* Abort cmd if its entirely erased */ 366 367/* Special char bit-flags used to tell put_line() to do something special */ 368#define AT_NORMAL (0) 369#define AT_UNDERLINE (1 << 0) 370#define AT_BOLD (1 << 1) 371#define AT_BLINK (1 << 2) 372#define AT_STANDOUT (1 << 3) 373#define AT_ANSI (1 << 4) /* Content-supplied "ANSI" escape sequence */ 374#define AT_BINARY (1 << 5) /* LESS*BINFMT representation */ 375#define AT_HILITE (1 << 6) /* Internal highlights (e.g., for search) */ 376 377#if '0' == 240 378#define IS_EBCDIC_HOST 1 379#endif 380 381#if IS_EBCDIC_HOST 382/* 383 * Long definition for EBCDIC. 384 * Since the argument is usually a constant, this macro normally compiles 385 * into a constant. 386 */ 387#define CONTROL(c) ( \ 388 (c)=='[' ? '\047' : \ 389 (c)=='a' ? '\001' : \ 390 (c)=='b' ? '\002' : \ 391 (c)=='c' ? '\003' : \ 392 (c)=='d' ? '\067' : \ 393 (c)=='e' ? '\055' : \ 394 (c)=='f' ? '\056' : \ 395 (c)=='g' ? '\057' : \ 396 (c)=='h' ? '\026' : \ 397 (c)=='i' ? '\005' : \ 398 (c)=='j' ? '\025' : \ 399 (c)=='k' ? '\013' : \ 400 (c)=='l' ? '\014' : \ 401 (c)=='m' ? '\015' : \ 402 (c)=='n' ? '\016' : \ 403 (c)=='o' ? '\017' : \ 404 (c)=='p' ? '\020' : \ 405 (c)=='q' ? '\021' : \ 406 (c)=='r' ? '\022' : \ 407 (c)=='s' ? '\023' : \ 408 (c)=='t' ? '\074' : \ 409 (c)=='u' ? '\075' : \ 410 (c)=='v' ? '\062' : \ 411 (c)=='w' ? '\046' : \ 412 (c)=='x' ? '\030' : \ 413 (c)=='y' ? '\031' : \ 414 (c)=='z' ? '\077' : \ 415 (c)=='A' ? '\001' : \ 416 (c)=='B' ? '\002' : \ 417 (c)=='C' ? '\003' : \ 418 (c)=='D' ? '\067' : \ 419 (c)=='E' ? '\055' : \ 420 (c)=='F' ? '\056' : \ 421 (c)=='G' ? '\057' : \ 422 (c)=='H' ? '\026' : \ 423 (c)=='I' ? '\005' : \ 424 (c)=='J' ? '\025' : \ 425 (c)=='K' ? '\013' : \ 426 (c)=='L' ? '\014' : \ 427 (c)=='M' ? '\015' : \ 428 (c)=='N' ? '\016' : \ 429 (c)=='O' ? '\017' : \ 430 (c)=='P' ? '\020' : \ 431 (c)=='Q' ? '\021' : \ 432 (c)=='R' ? '\022' : \ 433 (c)=='S' ? '\023' : \ 434 (c)=='T' ? '\074' : \ 435 (c)=='U' ? '\075' : \ 436 (c)=='V' ? '\062' : \ 437 (c)=='W' ? '\046' : \ 438 (c)=='X' ? '\030' : \ 439 (c)=='Y' ? '\031' : \ 440 (c)=='Z' ? '\077' : \ 441 (c)=='|' ? '\031' : \ 442 (c)=='\\' ? '\034' : \ 443 (c)=='^' ? '\036' : \ 444 (c)&077) 445#else 446#define CONTROL(c) ((c)&037) 447#endif /* IS_EBCDIC_HOST */ 448 449#define ESC CONTROL('[') 450#define CSI ((unsigned char)'\233') 451 452#if _OSK_MWC32 453#define LSIGNAL(sig,func) os9_signal(sig,func) 454#else 455#define LSIGNAL(sig,func) signal(sig,func) 456#endif 457 458#if HAVE_SIGPROCMASK 459#if HAVE_SIGSET_T 460#else 461#undef HAVE_SIGPROCMASK 462#endif 463#endif 464#if HAVE_SIGPROCMASK 465#if HAVE_SIGEMPTYSET 466#else 467#undef sigemptyset 468#define sigemptyset(mp) *(mp) = 0 469#endif 470#endif 471 472#define S_INTERRUPT 01 473#define S_STOP 02 474#define S_WINCH 04 475#define ABORT_SIGS() (sigs & (S_INTERRUPT|S_STOP)) 476 477#define QUIT_OK 0 478#define QUIT_ERROR 1 479#define QUIT_INTERRUPT 2 480#define QUIT_SAVED_STATUS (-1) 481 482#define FOLLOW_DESC 0 483#define FOLLOW_NAME 1 484 485/* filestate flags */ 486#define CH_CANSEEK 001 487#define CH_KEEPOPEN 002 488#define CH_POPENED 004 489#define CH_HELPFILE 010 490 491#define ch_zero() ((POSITION)0) 492 493#define FAKE_HELPFILE "@/\\less/\\help/\\file/\\@" 494 495/* Flags for cvt_text */ 496#define CVT_TO_LC 01 /* Convert upper-case to lower-case */ 497#define CVT_BS 02 /* Do backspace processing */ 498#define CVT_CRLF 04 /* Remove CR after LF */ 499#define CVT_ANSI 010 /* Remove ANSI escape sequences */ 500 501#include "funcs.h" 502 503/* Functions not included in funcs.h */ 504void postoa(); 505void linenumtoa(); 506void inttoa(); 507