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
|
/* shell.c -- readline utility functions that are normally provided by
bash when readline is linked as part of the shell. */
/* Copyright (C) 1997 Free Software Foundation, Inc.
This file is part of the GNU Readline Library, a library for
reading lines of text with interactive input and history editing.
The GNU Readline Library is free software; you can redistribute it
and/or modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; either version 2, or
(at your option) any later version.
The GNU Readline Library is distributed in the hope that it will be
useful, but WITHOUT ANY WARRANTY; without even the implied warranty
of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
The GNU General Public License is often shipped with GNU software, and
is generally kept in a file called COPYING or LICENSE. If you do not
have a copy of the license, write to the Free Software Foundation,
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */
#define READLINE_LIBRARY
#if defined (HAVE_CONFIG_H)
# include "config_readline.h"
#endif
#include <sys/types.h>
#if defined (HAVE_UNISTD_H)
# include <unistd.h>
#endif /* HAVE_UNISTD_H */
#if defined (HAVE_STDLIB_H)
# include <stdlib.h>
#else
# include "ansi_stdlib.h"
#endif /* HAVE_STDLIB_H */
#if defined (HAVE_STRING_H)
# include <string.h>
#else
# include <strings.h>
#endif /* !HAVE_STRING_H */
#if defined (HAVE_LIMITS_H)
# include <limits.h>
#endif
#if defined (HAVE_FCNTL_H)
#include <fcntl.h>
#endif
#if defined (HAVE_PWD_H)
#include <pwd.h>
#endif
#include <stdio.h>
#include "rlstdc.h"
#include "rlshell.h"
#include "xmalloc.h"
#if defined (HAVE_GETPWUID) && !defined (HAVE_GETPW_DECLS)
extern struct passwd *getpwuid PARAMS((uid_t));
#endif /* HAVE_GETPWUID && !HAVE_GETPW_DECLS */
#ifndef NULL
# define NULL 0
#endif
#ifndef CHAR_BIT
# define CHAR_BIT 8
#endif
/* Nonzero if the integer type T is signed. */
#define TYPE_SIGNED(t) (! ((t) 0 < (t) -1))
/* Bound on length of the string representing an integer value of type T.
Subtract one for the sign bit if T is signed;
302 / 1000 is log10 (2) rounded up;
add one for integer division truncation;
add one more for a minus sign if t is signed. */
#define INT_STRLEN_BOUND(t) \
((sizeof (t) * CHAR_BIT - TYPE_SIGNED (t)) * 302 / 1000 \
+ 1 + TYPE_SIGNED (t))
/* All of these functions are resolved from bash if we are linking readline
as part of bash. */
/* Does shell-like quoting using single quotes. */
char *
sh_single_quote (string)
char *string;
{
register int c;
char *result, *r, *s;
result = (char *)xmalloc (3 + (4 * strlen (string)));
r = result;
*r++ = '\'';
for (s = string; s && (c = *s); s++)
{
*r++ = c;
if (c == '\'')
{
*r++ = '\\'; /* insert escaped single quote */
*r++ = '\'';
*r++ = '\''; /* start new quoted string */
}
}
*r++ = '\'';
*r = '\0';
return (result);
}
/* Set the environment variables LINES and COLUMNS to lines and cols,
respectively. */
void
sh_set_lines_and_columns (lines, cols)
int lines, cols;
{
char *b;
#if defined (HAVE_SETENV)
b = (char *)xmalloc (INT_STRLEN_BOUND (int) + 1);
sprintf (b, "%d", lines);
setenv ("LINES", b, 1);
free (b);
b = (char *)xmalloc (INT_STRLEN_BOUND (int) + 1);
sprintf (b, "%d", cols);
setenv ("COLUMNS", b, 1);
free (b);
#else /* !HAVE_SETENV */
# if defined (HAVE_PUTENV)
b = (char *)xmalloc (INT_STRLEN_BOUND (int) + sizeof ("LINES=") + 1);
sprintf (b, "LINES=%d", lines);
putenv (b);
b = (char *)xmalloc (INT_STRLEN_BOUND (int) + sizeof ("COLUMNS=") + 1);
sprintf (b, "COLUMNS=%d", cols);
putenv (b);
# endif /* HAVE_PUTENV */
#endif /* !HAVE_SETENV */
}
char *
sh_get_env_value (varname)
const char *varname;
{
return ((char *)getenv (varname));
}
char *
sh_get_home_dir ()
{
char *home_dir;
struct passwd *entry;
home_dir = (char *)NULL;
#if defined (HAVE_GETPWUID)
entry = getpwuid (getuid ());
if (entry)
home_dir = entry->pw_dir;
#endif
return (home_dir);
}
#if !defined (O_NDELAY)
# if defined (FNDELAY)
# define O_NDELAY FNDELAY
# endif
#endif
int
sh_unset_nodelay_mode (fd)
int fd;
{
#if defined (HAVE_FCNTL)
int flags, bflags;
if ((flags = fcntl (fd, F_GETFL, 0)) < 0)
return -1;
bflags = 0;
#ifdef O_NONBLOCK
bflags |= O_NONBLOCK;
#endif
#ifdef O_NDELAY
bflags |= O_NDELAY;
#endif
if (flags & bflags)
{
flags &= ~bflags;
return (fcntl (fd, F_SETFL, flags));
}
#endif
return 0;
}
|
