1 /* $NetBSD: less.h,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 #define NEWBOT 1 13 14 /* 15 * Standard include file for "less". 16 */ 17 18 /* 19 * Defines for MSDOS_COMPILER. 20 */ 21 #define MSOFTC 1 /* Microsoft C */ 22 #define BORLANDC 2 /* Borland C */ 23 #define WIN32C 3 /* Windows (Borland C or Microsoft C) */ 24 #define DJGPPC 4 /* DJGPP C */ 25 26 /* 27 * Include the file of compile-time options. 28 * The <> make cc search for it in -I., not srcdir. 29 */ 30 #include <defines.h> 31 32 #ifdef _SEQUENT_ 33 /* 34 * Kludge for Sequent Dynix systems that have sigsetmask, but 35 * it's not compatible with the way less calls it. 36 * {{ Do other systems need this? }} 37 */ 38 #undef HAVE_SIGSETMASK 39 #endif 40 41 /* 42 * Language details. 43 */ 44 #if HAVE_VOID 45 #define VOID_POINTER void * 46 #else 47 #define VOID_POINTER char * 48 #define void int 49 #endif 50 #if HAVE_CONST 51 #define constant const 52 #else 53 #define constant 54 #endif 55 56 #define public /* PUBLIC FUNCTION */ 57 58 /* Library function declarations */ 59 60 #if HAVE_SYS_TYPES_H 61 #include <sys/types.h> 62 #endif 63 #if HAVE_STDIO_H 64 #include <stdio.h> 65 #endif 66 #if HAVE_FCNTL_H 67 #include <fcntl.h> 68 #endif 69 #if HAVE_UNISTD_H 70 #include <unistd.h> 71 #endif 72 #if HAVE_CTYPE_H 73 #include <ctype.h> 74 #endif 75 #if HAVE_WCTYPE_H 76 #include <wctype.h> 77 #endif 78 #if HAVE_LIMITS_H 79 #include <limits.h> 80 #endif 81 #if HAVE_STDLIB_H 82 #include <stdlib.h> 83 #endif 84 #if HAVE_STRING_H 85 #include <string.h> 86 #endif 87 88 /* OS-specific includes */ 89 #ifdef _OSK 90 #include <modes.h> 91 #include <strings.h> 92 #endif 93 94 #ifdef __TANDEM 95 #include <floss.h> 96 #endif 97 98 #if MSDOS_COMPILER==WIN32C || OS2 99 #include <io.h> 100 #endif 101 102 #if MSDOS_COMPILER==DJGPPC 103 #include <io.h> 104 #include <sys/exceptn.h> 105 #include <conio.h> 106 #include <pc.h> 107 #endif 108 109 #if !HAVE_STDLIB_H 110 char *getenv(); 111 off_t lseek(); 112 VOID_POINTER calloc(); 113 void free(); 114 #endif 115 116 /* 117 * Simple lowercase test which can be used during option processing 118 * (before options are parsed which might tell us what charset to use). 119 */ 120 #define ASCII_IS_UPPER(c) ((c) >= 'A' && (c) <= 'Z') 121 #define ASCII_IS_LOWER(c) ((c) >= 'a' && (c) <= 'z') 122 #define ASCII_TO_UPPER(c) ((c) - 'a' + 'A') 123 #define ASCII_TO_LOWER(c) ((c) - 'A' + 'a') 124 125 #undef IS_UPPER 126 #undef IS_LOWER 127 #undef TO_UPPER 128 #undef TO_LOWER 129 #undef IS_SPACE 130 #undef IS_DIGIT 131 132 #if HAVE_WCTYPE 133 #define IS_UPPER(c) iswupper(c) 134 #define IS_LOWER(c) iswlower(c) 135 #define TO_UPPER(c) towupper(c) 136 #define TO_LOWER(c) towlower(c) 137 #else 138 #if HAVE_UPPER_LOWER 139 #define IS_UPPER(c) isupper((unsigned char) (c)) 140 #define IS_LOWER(c) islower((unsigned char) (c)) 141 #define TO_UPPER(c) toupper((unsigned char) (c)) 142 #define TO_LOWER(c) tolower((unsigned char) (c)) 143 #else 144 #define IS_UPPER(c) ASCII_IS_UPPER(c) 145 #define IS_LOWER(c) ASCII_IS_LOWER(c) 146 #define TO_UPPER(c) ASCII_TO_UPPER(c) 147 #define TO_LOWER(c) ASCII_TO_LOWER(c) 148 #endif 149 #endif 150 151 #ifdef isspace 152 #define IS_SPACE(c) isspace((unsigned char)(c)) 153 #else 154 #define IS_SPACE(c) ((c) == ' ' || (c) == '\t' || (c) == '\n' || (c) == '\r' || (c) == '\f') 155 #endif 156 157 #ifdef isdigit 158 #define IS_DIGIT(c) isdigit((unsigned char)(c)) 159 #else 160 #define IS_DIGIT(c) ((c) >= '0' && (c) <= '9') 161 #endif 162 163 #define IS_CSI_START(c) (((LWCHAR)(c)) == ESC || (((LWCHAR)(c)) == CSI)) 164 165 #ifndef NULL 166 #define NULL 0 167 #endif 168 169 #ifndef TRUE 170 #define TRUE 1 171 #endif 172 #ifndef FALSE 173 #define FALSE 0 174 #endif 175 176 #define OPT_OFF 0 177 #define OPT_ON 1 178 #define OPT_ONPLUS 2 179 180 #if !HAVE_MEMCPY 181 #ifndef memcpy 182 #define memcpy(to,from,len) bcopy((from),(to),(len)) 183 #endif 184 #endif 185 186 #if HAVE_SNPRINTF 187 #define SNPRINTF1(str, size, fmt, v1) snprintf((str), (size), (fmt), (v1)) 188 #define SNPRINTF2(str, size, fmt, v1, v2) snprintf((str), (size), (fmt), (v1), (v2)) 189 #define SNPRINTF3(str, size, fmt, v1, v2, v3) snprintf((str), (size), (fmt), (v1), (v2), (v3)) 190 #define SNPRINTF4(str, size, fmt, v1, v2, v3, v4) snprintf((str), (size), (fmt), (v1), (v2), (v3), (v4)) 191 #else 192 /* Use unsafe sprintf if we don't have snprintf. */ 193 #define SNPRINTF1(str, size, fmt, v1) sprintf((str), (fmt), (v1)) 194 #define SNPRINTF2(str, size, fmt, v1, v2) sprintf((str), (fmt), (v1), (v2)) 195 #define SNPRINTF3(str, size, fmt, v1, v2, v3) sprintf((str), (fmt), (v1), (v2), (v3)) 196 #define SNPRINTF4(str, size, fmt, v1, v2, v3, v4) sprintf((str), (fmt), (v1), (v2), (v3), (v4)) 197 #endif 198 199 #define BAD_LSEEK ((off_t)-1) 200 201 #ifndef SEEK_SET 202 #define SEEK_SET 0 203 #endif 204 #ifndef SEEK_END 205 #define SEEK_END 2 206 #endif 207 208 #ifndef CHAR_BIT 209 #define CHAR_BIT 8 210 #endif 211 212 /* 213 * Upper bound on the string length of an integer converted to string. 214 * 302 / 1000 is ceil (log10 (2.0)). Subtract 1 for the sign bit; 215 * add 1 for integer division truncation; add 1 more for a minus sign. 216 */ 217 #define INT_STRLEN_BOUND(t) ((sizeof(t) * CHAR_BIT - 1) * 302 / 1000 + 1 + 1) 218 219 /* 220 * Special types and constants. 221 */ 222 typedef unsigned long LWCHAR; 223 typedef off_t POSITION; 224 typedef off_t LINENUM; 225 #define MIN_LINENUM_WIDTH 7 /* Min printing width of a line number */ 226 #define MAX_UTF_CHAR_LEN 6 /* Max bytes in one UTF-8 char */ 227 228 #define NULL_POSITION ((POSITION)(-1)) 229 230 /* 231 * Flags for open() 232 */ 233 #if MSDOS_COMPILER || OS2 234 #define OPEN_READ (O_RDONLY|O_BINARY) 235 #else 236 #ifdef _OSK 237 #define OPEN_READ (S_IREAD) 238 #else 239 #ifdef O_RDONLY 240 #define OPEN_READ (O_RDONLY) 241 #else 242 #define OPEN_READ (0) 243 #endif 244 #endif 245 #endif 246 247 #if defined(O_WRONLY) && defined(O_APPEND) 248 #define OPEN_APPEND (O_APPEND|O_WRONLY) 249 #else 250 #ifdef _OSK 251 #define OPEN_APPEND (S_IWRITE) 252 #else 253 #define OPEN_APPEND (1) 254 #endif 255 #endif 256 257 /* 258 * Set a file descriptor to binary mode. 259 */ 260 #if MSDOS_COMPILER==MSOFTC 261 #define SET_BINARY(f) _setmode(f, _O_BINARY); 262 #else 263 #if MSDOS_COMPILER || OS2 264 #define SET_BINARY(f) setmode(f, O_BINARY) 265 #else 266 #define SET_BINARY(f) 267 #endif 268 #endif 269 270 /* 271 * Does the shell treat "?" as a metacharacter? 272 */ 273 #if MSDOS_COMPILER || OS2 || _OSK 274 #define SHELL_META_QUEST 0 275 #else 276 #define SHELL_META_QUEST 1 277 #endif 278 279 #define SPACES_IN_FILENAMES 1 280 281 /* 282 * An IFILE represents an input file. 283 */ 284 #define IFILE VOID_POINTER 285 #define NULL_IFILE ((IFILE)NULL) 286 287 /* 288 * The structure used to represent a "screen position". 289 * This consists of a file position, and a screen line number. 290 * The meaning is that the line starting at the given file 291 * position is displayed on the ln-th line of the screen. 292 * (Screen lines before ln are empty.) 293 */ 294 struct scrpos 295 { 296 POSITION pos; 297 int ln; 298 }; 299 300 typedef union parg 301 { 302 constant char *p_string; 303 int p_int; 304 LINENUM p_linenum; 305 } PARG; 306 307 #define NULL_PARG ((PARG *)NULL) 308 309 struct textlist 310 { 311 char *string; 312 char *endstring; 313 }; 314 315 #define EOI (-1) 316 317 #define READ_INTR (-2) 318 319 /* A fraction is represented by an int n; the fraction is n/NUM_FRAC_DENOM */ 320 #define NUM_FRAC_DENOM 1000000 321 #define NUM_LOG_FRAC_DENOM 6 322 323 /* How quiet should we be? */ 324 #define NOT_QUIET 0 /* Ring bell at eof and for errors */ 325 #define LITTLE_QUIET 1 /* Ring bell only for errors */ 326 #define VERY_QUIET 2 /* Never ring bell */ 327 328 /* How should we prompt? */ 329 #define PR_SHORT 0 /* Prompt with colon */ 330 #define PR_MEDIUM 1 /* Prompt with message */ 331 #define PR_LONG 2 /* Prompt with longer message */ 332 333 /* How should we handle backspaces? */ 334 #define BS_SPECIAL 0 /* Do special things for underlining and bold */ 335 #define BS_NORMAL 1 /* \b treated as normal char; actually output */ 336 #define BS_CONTROL 2 /* \b treated as control char; prints as ^H */ 337 338 /* How should we search? */ 339 #define SRCH_FORW (1 << 0) /* Search forward from current position */ 340 #define SRCH_BACK (1 << 1) /* Search backward from current position */ 341 #define SRCH_NO_MOVE (1 << 2) /* Highlight, but don't move */ 342 #define SRCH_FIND_ALL (1 << 4) /* Find and highlight all matches */ 343 #define SRCH_NO_MATCH (1 << 8) /* Search for non-matching lines */ 344 #define SRCH_PAST_EOF (1 << 9) /* Search past end-of-file, into next file */ 345 #define SRCH_FIRST_FILE (1 << 10) /* Search starting at the first file */ 346 #define SRCH_NO_REGEX (1 << 12) /* Don't use regular expressions */ 347 #define SRCH_FILTER (1 << 13) /* Search is for '&' (filter) command */ 348 #define SRCH_AFTER_TARGET (1 << 14) /* Start search after the target line */ 349 350 #define SRCH_REVERSE(t) (((t) & SRCH_FORW) ? \ 351 (((t) & ~SRCH_FORW) | SRCH_BACK) : \ 352 (((t) & ~SRCH_BACK) | SRCH_FORW)) 353 354 /* */ 355 #define NO_MCA 0 356 #define MCA_DONE 1 357 #define MCA_MORE 2 358 359 #define CC_OK 0 /* Char was accepted & processed */ 360 #define CC_QUIT 1 /* Char was a request to abort current cmd */ 361 #define CC_ERROR 2 /* Char could not be accepted due to error */ 362 #define CC_PASS 3 /* Char was rejected (internal) */ 363 364 #define CF_QUIT_ON_ERASE 0001 /* Abort cmd if its entirely erased */ 365 366 /* Special char bit-flags used to tell put_line() to do something special */ 367 #define AT_NORMAL (0) 368 #define AT_UNDERLINE (1 << 0) 369 #define AT_BOLD (1 << 1) 370 #define AT_BLINK (1 << 2) 371 #define AT_STANDOUT (1 << 3) 372 #define AT_ANSI (1 << 4) /* Content-supplied "ANSI" escape sequence */ 373 #define AT_BINARY (1 << 5) /* LESS*BINFMT representation */ 374 #define AT_HILITE (1 << 6) /* Internal highlights (e.g., for search) */ 375 376 #if '0' == 240 377 #define IS_EBCDIC_HOST 1 378 #endif 379 380 #if IS_EBCDIC_HOST 381 /* 382 * Long definition for EBCDIC. 383 * Since the argument is usually a constant, this macro normally compiles 384 * into a constant. 385 */ 386 #define CONTROL(c) ( \ 387 (c)=='[' ? '\047' : \ 388 (c)=='a' ? '\001' : \ 389 (c)=='b' ? '\002' : \ 390 (c)=='c' ? '\003' : \ 391 (c)=='d' ? '\067' : \ 392 (c)=='e' ? '\055' : \ 393 (c)=='f' ? '\056' : \ 394 (c)=='g' ? '\057' : \ 395 (c)=='h' ? '\026' : \ 396 (c)=='i' ? '\005' : \ 397 (c)=='j' ? '\025' : \ 398 (c)=='k' ? '\013' : \ 399 (c)=='l' ? '\014' : \ 400 (c)=='m' ? '\015' : \ 401 (c)=='n' ? '\016' : \ 402 (c)=='o' ? '\017' : \ 403 (c)=='p' ? '\020' : \ 404 (c)=='q' ? '\021' : \ 405 (c)=='r' ? '\022' : \ 406 (c)=='s' ? '\023' : \ 407 (c)=='t' ? '\074' : \ 408 (c)=='u' ? '\075' : \ 409 (c)=='v' ? '\062' : \ 410 (c)=='w' ? '\046' : \ 411 (c)=='x' ? '\030' : \ 412 (c)=='y' ? '\031' : \ 413 (c)=='z' ? '\077' : \ 414 (c)=='A' ? '\001' : \ 415 (c)=='B' ? '\002' : \ 416 (c)=='C' ? '\003' : \ 417 (c)=='D' ? '\067' : \ 418 (c)=='E' ? '\055' : \ 419 (c)=='F' ? '\056' : \ 420 (c)=='G' ? '\057' : \ 421 (c)=='H' ? '\026' : \ 422 (c)=='I' ? '\005' : \ 423 (c)=='J' ? '\025' : \ 424 (c)=='K' ? '\013' : \ 425 (c)=='L' ? '\014' : \ 426 (c)=='M' ? '\015' : \ 427 (c)=='N' ? '\016' : \ 428 (c)=='O' ? '\017' : \ 429 (c)=='P' ? '\020' : \ 430 (c)=='Q' ? '\021' : \ 431 (c)=='R' ? '\022' : \ 432 (c)=='S' ? '\023' : \ 433 (c)=='T' ? '\074' : \ 434 (c)=='U' ? '\075' : \ 435 (c)=='V' ? '\062' : \ 436 (c)=='W' ? '\046' : \ 437 (c)=='X' ? '\030' : \ 438 (c)=='Y' ? '\031' : \ 439 (c)=='Z' ? '\077' : \ 440 (c)=='|' ? '\031' : \ 441 (c)=='\\' ? '\034' : \ 442 (c)=='^' ? '\036' : \ 443 (c)&077) 444 #else 445 #define CONTROL(c) ((c)&037) 446 #endif /* IS_EBCDIC_HOST */ 447 448 #define ESC CONTROL('[') 449 #define CSI ((unsigned char)'\233') 450 451 #if _OSK_MWC32 452 #define LSIGNAL(sig,func) os9_signal(sig,func) 453 #else 454 #define LSIGNAL(sig,func) signal(sig,func) 455 #endif 456 457 #if HAVE_SIGPROCMASK 458 #if HAVE_SIGSET_T 459 #else 460 #undef HAVE_SIGPROCMASK 461 #endif 462 #endif 463 #if HAVE_SIGPROCMASK 464 #if HAVE_SIGEMPTYSET 465 #else 466 #undef sigemptyset 467 #define sigemptyset(mp) *(mp) = 0 468 #endif 469 #endif 470 471 #define S_INTERRUPT 01 472 #define S_STOP 02 473 #define S_WINCH 04 474 #define ABORT_SIGS() (sigs & (S_INTERRUPT|S_STOP)) 475 476 #define QUIT_OK 0 477 #define QUIT_ERROR 1 478 #define QUIT_INTERRUPT 2 479 #define QUIT_SAVED_STATUS (-1) 480 481 #define FOLLOW_DESC 0 482 #define FOLLOW_NAME 1 483 484 /* filestate flags */ 485 #define CH_CANSEEK 001 486 #define CH_KEEPOPEN 002 487 #define CH_POPENED 004 488 #define CH_HELPFILE 010 489 #define CH_NODATA 020 /* Special case for zero length files */ 490 491 492 #define ch_zero() ((POSITION)0) 493 494 #define FAKE_HELPFILE "@/\\less/\\help/\\file/\\@" 495 #define FAKE_EMPTYFILE "@/\\less/\\empty/\\file/\\@" 496 497 /* Flags for cvt_text */ 498 #define CVT_TO_LC 01 /* Convert upper-case to lower-case */ 499 #define CVT_BS 02 /* Do backspace processing */ 500 #define CVT_CRLF 04 /* Remove CR after LF */ 501 #define CVT_ANSI 010 /* Remove ANSI escape sequences */ 502 503 #include "funcs.h" 504 505 /* Functions not included in funcs.h */ 506 void postoa(); 507 void linenumtoa(); 508 void inttoa(); 509