external/bsd/less/dist/less.h

   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();