Annotation of src/usr.bin/less/less.h, Revision 1.29
1.1 etheisen 1: /*
1.9 shadchin 2: * Copyright (C) 1984-2012 Mark Nudelman
1.13 nicm 3: * Modified for use with illumos by Garrett D'Amore.
4: * Copyright 2014 Garrett D'Amore <garrett@damore.org>
1.1 etheisen 5: *
1.4 millert 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.
1.1 etheisen 8: *
1.9 shadchin 9: * For more information, see the README file.
1.1 etheisen 10: */
11:
12: /*
1.10 nicm 13: * Standard include file for "less".
1.4 millert 14: */
15:
1.23 mmcc 16: #include "defines.h"
1.1 etheisen 17:
1.26 mmcc 18: #include <sys/types.h>
1.1 etheisen 19:
1.26 mmcc 20: #include <ctype.h>
1.1 etheisen 21: #include <fcntl.h>
1.4 millert 22: #include <limits.h>
1.26 mmcc 23: #include <signal.h>
24: #include <stdio.h>
1.1 etheisen 25: #include <stdlib.h>
26: #include <string.h>
1.26 mmcc 27: #include <unistd.h>
28: #include <wctype.h>
1.7 shadchin 29:
1.4 millert 30: /*
31: * Simple lowercase test which can be used during option processing
32: * (before options are parsed which might tell us what charset to use).
33: */
1.7 shadchin 34:
35: #undef IS_SPACE
36: #undef IS_DIGIT
37:
1.10 nicm 38: #define IS_SPACE(c) isspace((unsigned char)(c))
39: #define IS_DIGIT(c) isdigit((unsigned char)(c))
1.7 shadchin 40:
1.1 etheisen 41: #ifndef TRUE
42: #define TRUE 1
43: #endif
44: #ifndef FALSE
45: #define FALSE 0
46: #endif
47:
48: #define OPT_OFF 0
49: #define OPT_ON 1
50: #define OPT_ONPLUS 2
51:
1.4 millert 52: /*
1.1 etheisen 53: * Special types and constants.
54: */
1.7 shadchin 55: typedef unsigned long LWCHAR;
1.10 nicm 56: #define MIN_LINENUM_WIDTH 7 /* Min printing width of a line number */
57: #define MAX_UTF_CHAR_LEN 6 /* Max bytes in one UTF-8 char */
1.1 etheisen 58:
1.4 millert 59: #define SHELL_META_QUEST 1
1.1 etheisen 60:
61: /*
62: * An IFILE represents an input file.
63: */
1.10 nicm 64: #define IFILE void *
1.1 etheisen 65:
66: /*
67: * The structure used to represent a "screen position".
68: * This consists of a file position, and a screen line number.
69: * The meaning is that the line starting at the given file
70: * position is displayed on the ln-th line of the screen.
71: * (Screen lines before ln are empty.)
72: */
1.10 nicm 73: struct scrpos {
74: off_t pos;
1.1 etheisen 75: int ln;
76: };
77:
1.15 deraadt 78: typedef union parg {
1.1 etheisen 79: char *p_string;
80: int p_int;
1.21 mmcc 81: off_t p_linenum;
1.1 etheisen 82: } PARG;
83:
1.15 deraadt 84: struct textlist {
1.1 etheisen 85: char *string;
86: char *endstring;
87: };
88:
89: #define EOI (-1)
90:
91: #define READ_INTR (-2)
92:
1.7 shadchin 93: /* A fraction is represented by an int n; the fraction is n/NUM_FRAC_DENOM */
1.10 nicm 94: #define NUM_FRAC_DENOM 1000000
95: #define NUM_LOG_FRAC_DENOM 6
1.7 shadchin 96:
1.1 etheisen 97: /* How quiet should we be? */
98: #define NOT_QUIET 0 /* Ring bell at eof and for errors */
99: #define LITTLE_QUIET 1 /* Ring bell only for errors */
100: #define VERY_QUIET 2 /* Never ring bell */
101:
102: /* How should we prompt? */
103: #define PR_SHORT 0 /* Prompt with colon */
104: #define PR_MEDIUM 1 /* Prompt with message */
105: #define PR_LONG 2 /* Prompt with longer message */
106:
107: /* How should we handle backspaces? */
108: #define BS_SPECIAL 0 /* Do special things for underlining and bold */
109: #define BS_NORMAL 1 /* \b treated as normal char; actually output */
110: #define BS_CONTROL 2 /* \b treated as control char; prints as ^H */
111:
112: /* How should we search? */
1.10 nicm 113: #define SRCH_FORW (1 << 0) /* Search forward from current position */
114: #define SRCH_BACK (1 << 1) /* Search backward from current position */
115: #define SRCH_NO_MOVE (1 << 2) /* Highlight, but don't move */
116: #define SRCH_FIND_ALL (1 << 4) /* Find and highlight all matches */
117: #define SRCH_NO_MATCH (1 << 8) /* Search for non-matching lines */
118: #define SRCH_PAST_EOF (1 << 9) /* Search past end-of-file, into next file */
119: #define SRCH_FIRST_FILE (1 << 10) /* Search starting at the first file */
120: #define SRCH_NO_REGEX (1 << 12) /* Don't use regular expressions */
121: #define SRCH_FILTER (1 << 13) /* Search is for '&' (filter) command */
122: #define SRCH_AFTER_TARGET (1 << 14) /* Start search after the target line */
1.1 etheisen 123:
124: #define SRCH_REVERSE(t) (((t) & SRCH_FORW) ? \
125: (((t) & ~SRCH_FORW) | SRCH_BACK) : \
126: (((t) & ~SRCH_BACK) | SRCH_FORW))
127:
128: /* */
129: #define NO_MCA 0
130: #define MCA_DONE 1
131: #define MCA_MORE 2
132:
133: #define CC_OK 0 /* Char was accepted & processed */
134: #define CC_QUIT 1 /* Char was a request to abort current cmd */
135: #define CC_ERROR 2 /* Char could not be accepted due to error */
136: #define CC_PASS 3 /* Char was rejected (internal) */
137:
1.10 nicm 138: #define CF_QUIT_ON_ERASE 0001 /* Abort cmd if its entirely erased */
1.4 millert 139:
1.7 shadchin 140: /* Special char bit-flags used to tell put_line() to do something special */
1.1 etheisen 141: #define AT_NORMAL (0)
1.7 shadchin 142: #define AT_UNDERLINE (1 << 0)
143: #define AT_BOLD (1 << 1)
144: #define AT_BLINK (1 << 2)
145: #define AT_STANDOUT (1 << 3)
146: #define AT_ANSI (1 << 4) /* Content-supplied "ANSI" escape sequence */
147: #define AT_BINARY (1 << 5) /* LESS*BINFMT representation */
148: #define AT_HILITE (1 << 6) /* Internal highlights (e.g., for search) */
1.27 natano 149: #define AT_INDET (1 << 7) /* Indeterminate: either bold or underline */
1.1 etheisen 150:
151: #define CONTROL(c) ((c)&037)
152: #define ESC CONTROL('[')
153:
154: #define S_INTERRUPT 01
155: #define S_STOP 02
1.10 nicm 156: #define S_WINCH 04
1.1 etheisen 157: #define ABORT_SIGS() (sigs & (S_INTERRUPT|S_STOP))
158:
159: #define QUIT_OK 0
160: #define QUIT_ERROR 1
1.7 shadchin 161: #define QUIT_INTERRUPT 2
1.1 etheisen 162: #define QUIT_SAVED_STATUS (-1)
163:
1.10 nicm 164: #define FOLLOW_DESC 0
165: #define FOLLOW_NAME 1
1.7 shadchin 166:
1.1 etheisen 167: /* filestate flags */
168: #define CH_CANSEEK 001
169: #define CH_KEEPOPEN 002
170: #define CH_POPENED 004
1.7 shadchin 171: #define CH_HELPFILE 010
1.11 deraadt 172: #define CH_NODATA 020 /* Special case for zero length files */
1.9 shadchin 173:
1.1 etheisen 174:
1.10 nicm 175: #define ch_zero() (0)
1.9 shadchin 176:
1.10 nicm 177: #define FAKE_EMPTYFILE "@/\\less/\\empty/\\file/\\@"
1.7 shadchin 178:
179: /* Flags for cvt_text */
180: #define CVT_TO_LC 01 /* Convert upper-case to lower-case */
181: #define CVT_BS 02 /* Do backspace processing */
182: #define CVT_CRLF 04 /* Remove CR after LF */
183: #define CVT_ANSI 010 /* Remove ANSI escape sequences */
1.4 millert 184:
1.1 etheisen 185: #include "funcs.h"
1.4 millert 186:
187: /* Functions not included in funcs.h */
1.10 nicm 188: void postoa(off_t, char *, size_t);
189: void inttoa(int, char *, size_t);
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