Annotation of src/usr.bin/less/less.h, Revision 1.21
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:
16: /*
1.1 etheisen 17: * Include the file of compile-time options.
18: * The <> make cc search for it in -I., not srcdir.
19: */
20: #include <defines.h>
21:
22: /* Library function declarations */
23:
24: #include <sys/types.h>
25: #include <stdio.h>
26: #include <fcntl.h>
27: #include <unistd.h>
28: #include <ctype.h>
1.7 shadchin 29: #include <wctype.h>
1.4 millert 30: #include <limits.h>
1.1 etheisen 31: #include <stdlib.h>
32: #include <string.h>
1.10 nicm 33: #include <libgen.h>
1.8 millert 34: #include <signal.h>
1.7 shadchin 35:
1.4 millert 36: /*
37: * Simple lowercase test which can be used during option processing
38: * (before options are parsed which might tell us what charset to use).
39: */
1.7 shadchin 40:
41: #undef IS_SPACE
42: #undef IS_DIGIT
43:
1.10 nicm 44: #define IS_SPACE(c) isspace((unsigned char)(c))
45: #define IS_DIGIT(c) isdigit((unsigned char)(c))
1.7 shadchin 46:
1.10 nicm 47: #define IS_CSI_START(c) (((LWCHAR)(c)) == ESC || (((LWCHAR)(c)) == CSI))
1.1 etheisen 48:
49: #ifndef TRUE
50: #define TRUE 1
51: #endif
52: #ifndef FALSE
53: #define FALSE 0
54: #endif
55:
56: #define OPT_OFF 0
57: #define OPT_ON 1
58: #define OPT_ONPLUS 2
59:
1.4 millert 60: #ifndef CHAR_BIT
1.10 nicm 61: #define CHAR_BIT 8
1.4 millert 62: #endif
63:
64: /*
65: * Upper bound on the string length of an integer converted to string.
66: * 302 / 1000 is ceil (log10 (2.0)). Subtract 1 for the sign bit;
67: * add 1 for integer division truncation; add 1 more for a minus sign.
68: */
1.10 nicm 69: #define INT_STRLEN_BOUND(t) ((sizeof (t) * CHAR_BIT - 1) * 302 / 1000 + 1 + 1)
1.4 millert 70:
1.1 etheisen 71: /*
72: * Special types and constants.
73: */
1.7 shadchin 74: typedef unsigned long LWCHAR;
1.10 nicm 75: #define MIN_LINENUM_WIDTH 7 /* Min printing width of a line number */
76: #define MAX_UTF_CHAR_LEN 6 /* Max bytes in one UTF-8 char */
1.1 etheisen 77:
1.4 millert 78: #define SHELL_META_QUEST 1
1.1 etheisen 79:
80: /*
81: * An IFILE represents an input file.
82: */
1.10 nicm 83: #define IFILE void *
1.1 etheisen 84:
85: /*
86: * The structure used to represent a "screen position".
87: * This consists of a file position, and a screen line number.
88: * The meaning is that the line starting at the given file
89: * position is displayed on the ln-th line of the screen.
90: * (Screen lines before ln are empty.)
91: */
1.10 nicm 92: struct scrpos {
93: off_t pos;
1.1 etheisen 94: int ln;
95: };
96:
1.15 deraadt 97: typedef union parg {
1.1 etheisen 98: char *p_string;
99: int p_int;
1.21 ! mmcc 100: off_t p_linenum;
1.1 etheisen 101: } PARG;
102:
1.15 deraadt 103: struct textlist {
1.1 etheisen 104: char *string;
105: char *endstring;
106: };
107:
108: #define EOI (-1)
109:
110: #define READ_INTR (-2)
111:
1.7 shadchin 112: /* A fraction is represented by an int n; the fraction is n/NUM_FRAC_DENOM */
1.10 nicm 113: #define NUM_FRAC_DENOM 1000000
114: #define NUM_LOG_FRAC_DENOM 6
1.7 shadchin 115:
1.1 etheisen 116: /* How quiet should we be? */
117: #define NOT_QUIET 0 /* Ring bell at eof and for errors */
118: #define LITTLE_QUIET 1 /* Ring bell only for errors */
119: #define VERY_QUIET 2 /* Never ring bell */
120:
121: /* How should we prompt? */
122: #define PR_SHORT 0 /* Prompt with colon */
123: #define PR_MEDIUM 1 /* Prompt with message */
124: #define PR_LONG 2 /* Prompt with longer message */
125:
126: /* How should we handle backspaces? */
127: #define BS_SPECIAL 0 /* Do special things for underlining and bold */
128: #define BS_NORMAL 1 /* \b treated as normal char; actually output */
129: #define BS_CONTROL 2 /* \b treated as control char; prints as ^H */
130:
131: /* How should we search? */
1.10 nicm 132: #define SRCH_FORW (1 << 0) /* Search forward from current position */
133: #define SRCH_BACK (1 << 1) /* Search backward from current position */
134: #define SRCH_NO_MOVE (1 << 2) /* Highlight, but don't move */
135: #define SRCH_FIND_ALL (1 << 4) /* Find and highlight all matches */
136: #define SRCH_NO_MATCH (1 << 8) /* Search for non-matching lines */
137: #define SRCH_PAST_EOF (1 << 9) /* Search past end-of-file, into next file */
138: #define SRCH_FIRST_FILE (1 << 10) /* Search starting at the first file */
139: #define SRCH_NO_REGEX (1 << 12) /* Don't use regular expressions */
140: #define SRCH_FILTER (1 << 13) /* Search is for '&' (filter) command */
141: #define SRCH_AFTER_TARGET (1 << 14) /* Start search after the target line */
1.1 etheisen 142:
143: #define SRCH_REVERSE(t) (((t) & SRCH_FORW) ? \
144: (((t) & ~SRCH_FORW) | SRCH_BACK) : \
145: (((t) & ~SRCH_BACK) | SRCH_FORW))
146:
147: /* */
148: #define NO_MCA 0
149: #define MCA_DONE 1
150: #define MCA_MORE 2
151:
152: #define CC_OK 0 /* Char was accepted & processed */
153: #define CC_QUIT 1 /* Char was a request to abort current cmd */
154: #define CC_ERROR 2 /* Char could not be accepted due to error */
155: #define CC_PASS 3 /* Char was rejected (internal) */
156:
1.10 nicm 157: #define CF_QUIT_ON_ERASE 0001 /* Abort cmd if its entirely erased */
1.4 millert 158:
1.7 shadchin 159: /* Special char bit-flags used to tell put_line() to do something special */
1.1 etheisen 160: #define AT_NORMAL (0)
1.7 shadchin 161: #define AT_UNDERLINE (1 << 0)
162: #define AT_BOLD (1 << 1)
163: #define AT_BLINK (1 << 2)
164: #define AT_STANDOUT (1 << 3)
165: #define AT_ANSI (1 << 4) /* Content-supplied "ANSI" escape sequence */
166: #define AT_BINARY (1 << 5) /* LESS*BINFMT representation */
167: #define AT_HILITE (1 << 6) /* Internal highlights (e.g., for search) */
1.1 etheisen 168:
169: #define CONTROL(c) ((c)&037)
1.4 millert 170:
1.1 etheisen 171: #define ESC CONTROL('[')
1.7 shadchin 172: #define CSI ((unsigned char)'\233')
1.1 etheisen 173:
174: #define S_INTERRUPT 01
175: #define S_STOP 02
1.10 nicm 176: #define S_WINCH 04
1.1 etheisen 177: #define ABORT_SIGS() (sigs & (S_INTERRUPT|S_STOP))
178:
179: #define QUIT_OK 0
180: #define QUIT_ERROR 1
1.7 shadchin 181: #define QUIT_INTERRUPT 2
1.1 etheisen 182: #define QUIT_SAVED_STATUS (-1)
183:
1.10 nicm 184: #define FOLLOW_DESC 0
185: #define FOLLOW_NAME 1
1.7 shadchin 186:
1.1 etheisen 187: /* filestate flags */
188: #define CH_CANSEEK 001
189: #define CH_KEEPOPEN 002
190: #define CH_POPENED 004
1.7 shadchin 191: #define CH_HELPFILE 010
1.11 deraadt 192: #define CH_NODATA 020 /* Special case for zero length files */
1.9 shadchin 193:
1.1 etheisen 194:
1.10 nicm 195: #define ch_zero() (0)
1.9 shadchin 196:
1.10 nicm 197: #define FAKE_EMPTYFILE "@/\\less/\\empty/\\file/\\@"
1.7 shadchin 198:
199: /* Flags for cvt_text */
200: #define CVT_TO_LC 01 /* Convert upper-case to lower-case */
201: #define CVT_BS 02 /* Do backspace processing */
202: #define CVT_CRLF 04 /* Remove CR after LF */
203: #define CVT_ANSI 010 /* Remove ANSI escape sequences */
1.4 millert 204:
1.1 etheisen 205: #include "funcs.h"
1.4 millert 206:
207: /* Functions not included in funcs.h */
1.10 nicm 208: void postoa(off_t, char *, size_t);
1.21 ! mmcc 209: void linenumtoa(off_t, char *, size_t);
1.10 nicm 210: void inttoa(int, char *, size_t);
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