-
Notifications
You must be signed in to change notification settings - Fork 87
/
less.h
314 lines (267 loc) · 7.43 KB
/
less.h
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
/*
* Copyright (c) 1984,1985,1989,1994,1995,1996 Mark Nudelman
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice in the documentation and/or other materials provided with
* the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
* OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
* BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
* OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
* IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
/*
* Standard include file for "less".
*/
/*
* Defines for MSDOS_COMPILER.
*/
#define MSOFTC 1 /* Microsoft C */
#define BORLANDC 2 /* Borland C */
#define WIN32C 3 /* Windows (Borland C or Microsoft C) */
#define DJGPPC 4 /* DJGPP C */
/*
* Include the file of compile-time options.
* The <> make cc search for it in -I., not srcdir.
*/
#include <defines.h>
#ifdef _SEQUENT_
/*
* Kludge for Sequent Dynix systems that have sigsetmask, but
* it's not compatible with the way less calls it.
* {{ Do other systems need this? }}
*/
#undef HAVE_SIGSETMASK
#endif
/*
* Language details.
*/
#if HAVE_VOID
#define VOID_POINTER void *
#else
#define VOID_POINTER char *
#define void int
#endif
#if HAVE_CONST
#define constant const
#else
#define constant
#endif
#define public /* PUBLIC FUNCTION */
/* Library function declarations */
#if HAVE_SYS_TYPES_H
#include <sys/types.h>
#endif
#if HAVE_STDIO_H
#include <stdio.h>
#endif
#if HAVE_FCNTL_H
#include <fcntl.h>
#endif
#if HAVE_UNISTD_H
#include <unistd.h>
#endif
#if HAVE_CTYPE_H
#include <ctype.h>
#endif
#if STDC_HEADERS
#include <stdlib.h>
#include <string.h>
#endif
#ifdef _OSK
#include <modes.h>
#include <strings.h>
#endif
#if MSDOS_COMPILER==WIN32C || MSDOS_COMPILER==DJGPPC
#include <io.h>
#endif
#if !STDC_HEADERS
char *getenv();
off_t lseek();
VOID_POINTER calloc();
void free();
#endif
#if !HAVE_UPPER_LOWER
#define isupper(c) ((c) >= 'A' && (c) <= 'Z')
#define islower(c) ((c) >= 'a' && (c) <= 'z')
#define toupper(c) ((c) - 'a' + 'A')
#define tolower(c) ((c) - 'A' + 'a')
#endif
#ifndef NULL
#define NULL 0
#endif
#ifndef TRUE
#define TRUE 1
#endif
#ifndef FALSE
#define FALSE 0
#endif
#define OPT_OFF 0
#define OPT_ON 1
#define OPT_ONPLUS 2
#if !HAVE_MEMCPY
#ifndef memcpy
#define memcpy(to,from,len) bcopy((from),(to),(len))
#endif
#endif
#define BAD_LSEEK ((off_t)-1)
/*
* Special types and constants.
*/
typedef long POSITION;
/*
* {{ Warning: if POSITION is changed to other than "long",
* you may have to change some of the printfs which use "%ld"
* to print a variable of type POSITION. }}
*/
#define NULL_POSITION ((POSITION)(-1))
/*
* Flags for open()
*/
#if MSDOS_COMPILER || OS2
#define OPEN_READ (O_RDONLY|O_BINARY)
#else
#ifdef _OSK
#define OPEN_READ (S_IREAD)
#else
#ifdef O_RDONLY
#define OPEN_READ (O_RDONLY)
#else
#define OPEN_READ (0)
#endif
#endif
#endif
#if defined(O_WRONLY) && defined(O_APPEND)
#define OPEN_APPEND (O_APPEND|O_WRONLY)
#else
#ifdef _OSK
#define OPEN_APPEND (S_IWRITE)
#else
#define OPEN_APPEND (1)
#endif
#endif
/*
* Set a file descriptor to binary mode.
*/
#if MSDOS_COMPILER==MSOFTC
#define SET_BINARY(f) _setmode(f, _O_BINARY);
#else
#if MSDOS_COMPILER
#define SET_BINARY(f) setmode(f, O_BINARY)
#else
#define SET_BINARY(f)
#endif
#endif
/*
* Does the shell treat "?" as a metacharacter?
*/
#if MSDOS_COMPILER || OS2 || _OSK
#define SHELL_META_QUEST 0
#else
#define SHELL_META_QUEST 1
#endif
#define SPACES_IN_FILENAMES 1
/*
* An IFILE represents an input file.
*/
#define IFILE VOID_POINTER
#define NULL_IFILE ((IFILE)NULL)
/*
* The structure used to represent a "screen position".
* This consists of a file position, and a screen line number.
* The meaning is that the line starting at the given file
* position is displayed on the ln-th line of the screen.
* (Screen lines before ln are empty.)
*/
struct scrpos
{
POSITION pos;
int ln;
};
typedef union parg
{
char *p_string;
int p_int;
} PARG;
#define NULL_PARG ((PARG *)NULL)
struct textlist
{
char *string;
char *endstring;
};
#define EOI (-1)
#define READ_INTR (-2)
/* How quiet should we be? */
#define NOT_QUIET 0 /* Ring bell at eof and for errors */
#define LITTLE_QUIET 1 /* Ring bell only for errors */
#define VERY_QUIET 2 /* Never ring bell */
/* How should we prompt? */
#define PR_SHORT 0 /* Prompt with colon */
#define PR_MEDIUM 1 /* Prompt with message */
#define PR_LONG 2 /* Prompt with longer message */
/* How should we handle backspaces? */
#define BS_SPECIAL 0 /* Do special things for underlining and bold */
#define BS_NORMAL 1 /* \b treated as normal char; actually output */
#define BS_CONTROL 2 /* \b treated as control char; prints as ^H */
/* How should we search? */
#define SRCH_FORW 000001 /* Search forward from current position */
#define SRCH_BACK 000002 /* Search backward from current position */
#define SRCH_NO_MOVE 000004 /* Highlight, but don't move */
#define SRCH_FIND_ALL 000010 /* Find and highlight all matches */
#define SRCH_NO_MATCH 000100 /* Search for non-matching lines */
#define SRCH_PAST_EOF 000200 /* Search past end-of-file, into next file */
#define SRCH_FIRST_FILE 000400 /* Search starting at the first file */
#define SRCH_NO_REGEX 001000 /* Don't use regular expressions */
#define SRCH_REVERSE(t) (((t) & SRCH_FORW) ? \
(((t) & ~SRCH_FORW) | SRCH_BACK) : \
(((t) & ~SRCH_BACK) | SRCH_FORW))
/* */
#define NO_MCA 0
#define MCA_DONE 1
#define MCA_MORE 2
#define CC_OK 0 /* Char was accepted & processed */
#define CC_QUIT 1 /* Char was a request to abort current cmd */
#define CC_ERROR 2 /* Char could not be accepted due to error */
#define CC_PASS 3 /* Char was rejected (internal) */
/* Special chars used to tell put_line() to do something special */
#define AT_NORMAL (0)
#define AT_UNDERLINE (1)
#define AT_BOLD (2)
#define AT_BLINK (3)
#define AT_INVIS (4)
#define AT_STANDOUT (5)
#define CONTROL(c) ((c)&037)
#define ESC CONTROL('[')
#if _OSK_MWC32
#define LSIGNAL(sig,func) os9_signal(sig,func)
#else
#define LSIGNAL(sig,func) signal(sig,func)
#endif
#define S_INTERRUPT 01
#define S_STOP 02
#define S_WINCH 04
#define ABORT_SIGS() (sigs & (S_INTERRUPT|S_STOP))
#define QUIT_OK 0
#define QUIT_ERROR 1
#define QUIT_SAVED_STATUS (-1)
/* filestate flags */
#define CH_CANSEEK 001
#define CH_KEEPOPEN 002
#define CH_POPENED 004
#define CH_HELPFILE 010
#define ch_zero() ((POSITION)0)
#define FAKE_HELPFILE "@/\\less/\\help/\\file/\\@"
#include "funcs.h"