Annotation of src/usr.bin/less/less.h, Revision 1.1.1.4
1.1 etheisen 1: /*
1.1.1.4 ! shadchin 2: * Copyright (C) 1984-2012 Mark Nudelman
1.1 etheisen 3: *
1.1.1.2 millert 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.
1.1 etheisen 6: *
1.1.1.4 ! shadchin 7: * For more information, see the README file.
1.1 etheisen 8: */
9:
1.1.1.3 shadchin 10: #define NEWBOT 1
1.1 etheisen 11:
12: /*
13: * Standard include file for "less".
14: */
15:
16: /*
1.1.1.2 millert 17: * Defines for MSDOS_COMPILER.
18: */
19: #define MSOFTC 1 /* Microsoft C */
20: #define BORLANDC 2 /* Borland C */
21: #define WIN32C 3 /* Windows (Borland C or Microsoft C) */
22: #define DJGPPC 4 /* DJGPP C */
23:
24: /*
1.1 etheisen 25: * Include the file of compile-time options.
26: * The <> make cc search for it in -I., not srcdir.
27: */
28: #include <defines.h>
29:
30: #ifdef _SEQUENT_
31: /*
32: * Kludge for Sequent Dynix systems that have sigsetmask, but
33: * it's not compatible with the way less calls it.
34: * {{ Do other systems need this? }}
35: */
36: #undef HAVE_SIGSETMASK
37: #endif
38:
39: /*
40: * Language details.
41: */
42: #if HAVE_VOID
43: #define VOID_POINTER void *
44: #else
45: #define VOID_POINTER char *
46: #define void int
47: #endif
1.1.1.2 millert 48: #if HAVE_CONST
49: #define constant const
50: #else
51: #define constant
52: #endif
1.1 etheisen 53:
54: #define public /* PUBLIC FUNCTION */
55:
56: /* Library function declarations */
57:
58: #if HAVE_SYS_TYPES_H
59: #include <sys/types.h>
60: #endif
61: #if HAVE_STDIO_H
62: #include <stdio.h>
63: #endif
64: #if HAVE_FCNTL_H
65: #include <fcntl.h>
66: #endif
67: #if HAVE_UNISTD_H
68: #include <unistd.h>
69: #endif
70: #if HAVE_CTYPE_H
71: #include <ctype.h>
72: #endif
1.1.1.3 shadchin 73: #if HAVE_WCTYPE_H
74: #include <wctype.h>
75: #endif
1.1.1.2 millert 76: #if HAVE_LIMITS_H
77: #include <limits.h>
78: #endif
79: #if HAVE_STDLIB_H
1.1 etheisen 80: #include <stdlib.h>
1.1.1.2 millert 81: #endif
82: #if HAVE_STRING_H
1.1 etheisen 83: #include <string.h>
84: #endif
1.1.1.4 ! shadchin 85: #include <signal.h>
1.1.1.3 shadchin 86:
87: /* OS-specific includes */
1.1.1.2 millert 88: #ifdef _OSK
89: #include <modes.h>
90: #include <strings.h>
91: #endif
1.1.1.3 shadchin 92:
93: #ifdef __TANDEM
94: #include <floss.h>
95: #endif
96:
1.1.1.2 millert 97: #if MSDOS_COMPILER==WIN32C || OS2
98: #include <io.h>
99: #endif
1.1.1.3 shadchin 100:
1.1.1.2 millert 101: #if MSDOS_COMPILER==DJGPPC
102: #include <io.h>
103: #include <sys/exceptn.h>
104: #include <conio.h>
105: #include <pc.h>
106: #endif
1.1 etheisen 107:
1.1.1.2 millert 108: #if !HAVE_STDLIB_H
1.1 etheisen 109: char *getenv();
110: off_t lseek();
111: VOID_POINTER calloc();
112: void free();
113: #endif
114:
1.1.1.2 millert 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: */
1.1.1.3 shadchin 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')
1.1 etheisen 160: #endif
161:
1.1.1.3 shadchin 162: #define IS_CSI_START(c) (((LWCHAR)(c)) == ESC || (((LWCHAR)(c)) == CSI))
163:
1.1 etheisen 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:
1.1.1.2 millert 179: #if !HAVE_MEMCPY
1.1 etheisen 180: #ifndef memcpy
181: #define memcpy(to,from,len) bcopy((from),(to),(len))
182: #endif
183: #endif
184:
1.1.1.3 shadchin 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:
1.1 etheisen 198: #define BAD_LSEEK ((off_t)-1)
199:
1.1.1.3 shadchin 200: #ifndef SEEK_SET
201: #define SEEK_SET 0
202: #endif
203: #ifndef SEEK_END
204: #define SEEK_END 2
205: #endif
206:
1.1.1.2 millert 207: #ifndef CHAR_BIT
208: #define CHAR_BIT 8
209: #endif
210:
1.1 etheisen 211: /*
1.1.1.2 millert 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.
1.1 etheisen 215: */
1.1.1.2 millert 216: #define INT_STRLEN_BOUND(t) ((sizeof(t) * CHAR_BIT - 1) * 302 / 1000 + 1 + 1)
217:
1.1 etheisen 218: /*
1.1.1.2 millert 219: * Special types and constants.
1.1 etheisen 220: */
1.1.1.3 shadchin 221: typedef unsigned long LWCHAR;
1.1.1.2 millert 222: typedef off_t POSITION;
223: typedef off_t LINENUM;
224: #define MIN_LINENUM_WIDTH 7 /* Min printing width of a line number */
1.1.1.3 shadchin 225: #define MAX_UTF_CHAR_LEN 6 /* Max bytes in one UTF-8 char */
1.1 etheisen 226:
227: #define NULL_POSITION ((POSITION)(-1))
228:
229: /*
230: * Flags for open()
231: */
1.1.1.2 millert 232: #if MSDOS_COMPILER || OS2
1.1 etheisen 233: #define OPEN_READ (O_RDONLY|O_BINARY)
234: #else
1.1.1.2 millert 235: #ifdef _OSK
236: #define OPEN_READ (S_IREAD)
237: #else
238: #ifdef O_RDONLY
239: #define OPEN_READ (O_RDONLY)
240: #else
1.1 etheisen 241: #define OPEN_READ (0)
242: #endif
1.1.1.2 millert 243: #endif
244: #endif
245:
246: #if defined(O_WRONLY) && defined(O_APPEND)
1.1 etheisen 247: #define OPEN_APPEND (O_APPEND|O_WRONLY)
248: #else
1.1.1.2 millert 249: #ifdef _OSK
250: #define OPEN_APPEND (S_IWRITE)
251: #else
1.1 etheisen 252: #define OPEN_APPEND (1)
253: #endif
1.1.1.2 millert 254: #endif
1.1 etheisen 255:
1.1.1.2 millert 256: /*
257: * Set a file descriptor to binary mode.
258: */
259: #if MSDOS_COMPILER==MSOFTC
260: #define SET_BINARY(f) _setmode(f, _O_BINARY);
1.1 etheisen 261: #else
1.1.1.2 millert 262: #if MSDOS_COMPILER || OS2
263: #define SET_BINARY(f) setmode(f, O_BINARY)
264: #else
265: #define SET_BINARY(f)
266: #endif
1.1 etheisen 267: #endif
268:
269: /*
1.1.1.2 millert 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: /*
1.1 etheisen 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: */
293: struct scrpos
294: {
295: POSITION pos;
296: int ln;
297: };
298:
299: typedef union parg
300: {
301: char *p_string;
302: int p_int;
1.1.1.2 millert 303: LINENUM p_linenum;
1.1 etheisen 304: } PARG;
305:
306: #define NULL_PARG ((PARG *)NULL)
307:
308: struct textlist
309: {
310: char *string;
311: char *endstring;
312: };
313:
314: #define EOI (-1)
315:
316: #define READ_INTR (-2)
317:
1.1.1.3 shadchin 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:
1.1 etheisen 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? */
1.1.1.3 shadchin 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 */
1.1 etheisen 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:
1.1.1.2 millert 363: #define CF_QUIT_ON_ERASE 0001 /* Abort cmd if its entirely erased */
364:
1.1.1.3 shadchin 365: /* Special char bit-flags used to tell put_line() to do something special */
1.1 etheisen 366: #define AT_NORMAL (0)
1.1.1.3 shadchin 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) */
1.1 etheisen 374:
1.1.1.2 millert 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
1.1 etheisen 444: #define CONTROL(c) ((c)&037)
1.1.1.2 millert 445: #endif /* IS_EBCDIC_HOST */
446:
1.1 etheisen 447: #define ESC CONTROL('[')
1.1.1.3 shadchin 448: #define CSI ((unsigned char)'\233')
1.1 etheisen 449:
1.1.1.2 millert 450: #if _OSK_MWC32
451: #define LSIGNAL(sig,func) os9_signal(sig,func)
452: #else
1.1.1.4 ! shadchin 453: #define LSIGNAL(sig,func) lsignal(sig,func)
1.1.1.2 millert 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
1.1 etheisen 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
1.1.1.3 shadchin 477: #define QUIT_INTERRUPT 2
1.1 etheisen 478: #define QUIT_SAVED_STATUS (-1)
479:
1.1.1.3 shadchin 480: #define FOLLOW_DESC 0
481: #define FOLLOW_NAME 1
482:
1.1 etheisen 483: /* filestate flags */
484: #define CH_CANSEEK 001
485: #define CH_KEEPOPEN 002
486: #define CH_POPENED 004
1.1.1.2 millert 487: #define CH_HELPFILE 010
1.1.1.4 ! shadchin 488: #define CH_NODATA 020 /* Special case for zero length files */
! 489:
1.1 etheisen 490:
491: #define ch_zero() ((POSITION)0)
492:
1.1.1.2 millert 493: #define FAKE_HELPFILE "@/\\less/\\help/\\file/\\@"
1.1.1.4 ! shadchin 494: #define FAKE_EMPTYFILE "@/\\less/\\empty/\\file/\\@"
1.1.1.3 shadchin 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 */
1.1.1.2 millert 501:
1.1 etheisen 502: #include "funcs.h"
1.1.1.2 millert 503:
504: /* Functions not included in funcs.h */
505: void postoa();
506: void linenumtoa();
507: void inttoa();
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