jcs.org
jcs's openbsd hax
openbsd
1/*
2 * Copyright (C) 1984-2012 Mark Nudelman
3 * Modified for use with illumos by Garrett D'Amore.
4 * Copyright 2014 Garrett D'Amore <garrett@damore.org>
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/*
13 * Standard include file for "less".
14 */
15
16#include "defines.h"
17
18#include <sys/types.h>
19
20#include <ctype.h>
21#include <fcntl.h>
22#include <limits.h>
23#include <signal.h>
24#include <stdio.h>
25#include <stdlib.h>
26#include <string.h>
27#include <unistd.h>
28#include <wctype.h>
29
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 */
34
35#undef IS_SPACE
36#undef IS_DIGIT
37
38#define IS_SPACE(c) isspace((unsigned char)(c))
39#define IS_DIGIT(c) isdigit((unsigned char)(c))
40
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
52/*
53 * Special types and constants.
54 */
55typedef unsigned long LWCHAR;
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 */
58
59#define SHELL_META_QUEST 1
60
61/*
62 * An IFILE represents an input file.
63 */
64#define IFILE void *
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 */
73struct scrpos {
74 off_t pos;
75 int ln;
76};
77
78typedef union parg {
79 char *p_string;
80 int p_int;
81 off_t p_linenum;
82} PARG;
83
84struct textlist {
85 char *string;
86 char *endstring;
87};
88
89#define EOI (-1)
90
91#define READ_INTR (-2)
92
93/* A fraction is represented by an int n; the fraction is n/NUM_FRAC_DENOM */
94#define NUM_FRAC_DENOM 1000000
95#define NUM_LOG_FRAC_DENOM 6
96
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? */
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 */
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
138#define CF_QUIT_ON_ERASE 0001 /* Abort cmd if its entirely erased */
139
140/* Special char bit-flags used to tell put_line() to do something special */
141#define AT_NORMAL (0)
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) */
149#define AT_INDET (1 << 7) /* Indeterminate: either bold or underline */
150
151#define CONTROL(c) ((c)&037)
152#define ESC CONTROL('[')
153
154extern int any_sigs(void);
155extern int abort_sigs(void);
156
157#define QUIT_OK 0
158#define QUIT_ERROR 1
159#define QUIT_INTERRUPT 2
160#define QUIT_SAVED_STATUS (-1)
161
162#define FOLLOW_DESC 0
163#define FOLLOW_NAME 1
164
165/* filestate flags */
166#define CH_CANSEEK 001
167#define CH_KEEPOPEN 002
168#define CH_HELPFILE 010
169#define CH_NODATA 020 /* Special case for zero length files */
170
171
172#define ch_zero() (0)
173
174#define FAKE_EMPTYFILE "@/\\less/\\empty/\\file/\\@"
175
176/* Flags for cvt_text */
177#define CVT_TO_LC 01 /* Convert upper-case to lower-case */
178#define CVT_BS 02 /* Do backspace processing */
179#define CVT_CRLF 04 /* Remove CR after LF */
180#define CVT_ANSI 010 /* Remove ANSI escape sequences */
181
182#include "funcs.h"
183
184/* Functions not included in funcs.h */
185void postoa(off_t, char *, size_t);
186void inttoa(int, char *, size_t);