| 1/* $FreeBSD: head/contrib/libreadline/shell.c 58314 2000-03-19 22:00:57Z ache $ */
|
1/* shell.c -- readline utility functions that are normally provided by
2 bash when readline is linked as part of the shell. */
3
4/* Copyright (C) 1997 Free Software Foundation, Inc.
5
6 This file is part of the GNU Readline Library, a library for
7 reading lines of text with interactive input and history editing.
8
9 The GNU Readline Library is free software; you can redistribute it
10 and/or modify it under the terms of the GNU General Public License
| 2/* shell.c -- readline utility functions that are normally provided by
3 bash when readline is linked as part of the shell. */
4
5/* Copyright (C) 1997 Free Software Foundation, Inc.
6
7 This file is part of the GNU Readline Library, a library for
8 reading lines of text with interactive input and history editing.
9
10 The GNU Readline Library is free software; you can redistribute it
11 and/or modify it under the terms of the GNU General Public License
|
11 as published by the Free Software Foundation; either version 1, or
| 12 as published by the Free Software Foundation; either version 2, or
|
12 (at your option) any later version.
13
14 The GNU Readline Library is distributed in the hope that it will be
15 useful, but WITHOUT ANY WARRANTY; without even the implied warranty
16 of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details.
18
19 The GNU General Public License is often shipped with GNU software, and
20 is generally kept in a file called COPYING or LICENSE. If you do not
21 have a copy of the license, write to the Free Software Foundation,
| 13 (at your option) any later version.
14
15 The GNU Readline Library is distributed in the hope that it will be
16 useful, but WITHOUT ANY WARRANTY; without even the implied warranty
17 of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 GNU General Public License for more details.
19
20 The GNU General Public License is often shipped with GNU software, and
21 is generally kept in a file called COPYING or LICENSE. If you do not
22 have a copy of the license, write to the Free Software Foundation,
|
22 675 Mass Ave, Cambridge, MA 02139, USA. */
| 23 59 Temple Place, Suite 330, Boston, MA 02111 USA. */
|
23#define READLINE_LIBRARY
24
25#if defined (HAVE_CONFIG_H)
26# include <config.h>
27#endif
28
29#include <sys/types.h>
30
31#if defined (HAVE_UNISTD_H)
32# include <unistd.h>
33#endif /* HAVE_UNISTD_H */
34
35#if defined (HAVE_STDLIB_H)
36# include <stdlib.h>
37#else
38# include "ansi_stdlib.h"
39#endif /* HAVE_STDLIB_H */
40
41#if defined (HAVE_STRING_H)
42# include <string.h>
43#else
44# include <strings.h>
45#endif /* !HAVE_STRING_H */
46
| 24#define READLINE_LIBRARY
25
26#if defined (HAVE_CONFIG_H)
27# include <config.h>
28#endif
29
30#include <sys/types.h>
31
32#if defined (HAVE_UNISTD_H)
33# include <unistd.h>
34#endif /* HAVE_UNISTD_H */
35
36#if defined (HAVE_STDLIB_H)
37# include <stdlib.h>
38#else
39# include "ansi_stdlib.h"
40#endif /* HAVE_STDLIB_H */
41
42#if defined (HAVE_STRING_H)
43# include <string.h>
44#else
45# include <strings.h>
46#endif /* !HAVE_STRING_H */
47
|
| 48#include <fcntl.h>
|
47#include <pwd.h>
48
| 49#include <pwd.h>
50
|
| 51#include <stdio.h>
52
53#include "rlshell.h"
54#include "xmalloc.h"
55
|
49#if !defined (HAVE_GETPW_DECLS)
50extern struct passwd *getpwuid ();
51#endif /* !HAVE_GETPW_DECLS */
52
| 56#if !defined (HAVE_GETPW_DECLS)
57extern struct passwd *getpwuid ();
58#endif /* !HAVE_GETPW_DECLS */
59
|
53extern char *xmalloc ();
| 60#ifndef NULL
61# define NULL 0
62#endif
|
54
55/* All of these functions are resolved from bash if we are linking readline
56 as part of bash. */
57
58/* Does shell-like quoting using single quotes. */
59char *
60single_quote (string)
61 char *string;
62{
63 register int c;
64 char *result, *r, *s;
65
| 63
64/* All of these functions are resolved from bash if we are linking readline
65 as part of bash. */
66
67/* Does shell-like quoting using single quotes. */
68char *
69single_quote (string)
70 char *string;
71{
72 register int c;
73 char *result, *r, *s;
74
|
66 result = (char *)xmalloc (3 + (3 * strlen (string)));
| 75 result = (char *)xmalloc (3 + (4 * strlen (string)));
|
67 r = result;
68 *r++ = '\'';
69
70 for (s = string; s && (c = *s); s++)
71 {
72 *r++ = c;
73
74 if (c == '\'')
75 {
76 *r++ = '\\'; /* insert escaped single quote */
77 *r++ = '\'';
78 *r++ = '\''; /* start new quoted string */
79 }
80 }
81
82 *r++ = '\'';
83 *r = '\0';
84
85 return (result);
86}
87
88/* Set the environment variables LINES and COLUMNS to lines and cols,
89 respectively. */
90void
91set_lines_and_columns (lines, cols)
92 int lines, cols;
93{
94 char *b;
95
96#if defined (HAVE_PUTENV)
97 b = xmalloc (24);
98 sprintf (b, "LINES=%d", lines);
99 putenv (b);
100 b = xmalloc (24);
101 sprintf (b, "COLUMNS=%d", cols);
102 putenv (b);
103#else /* !HAVE_PUTENV */
104# if defined (HAVE_SETENV)
105 b = xmalloc (8);
106 sprintf (b, "%d", lines);
107 setenv ("LINES", b, 1);
108 b = xmalloc (8);
109 sprintf (b, "%d", cols);
110 setenv ("COLUMNS", b, 1);
111# endif /* HAVE_SETENV */
112#endif /* !HAVE_PUTENV */
113}
114
115char *
116get_env_value (varname)
117 char *varname;
118{
119 return ((char *)getenv (varname));
120}
121
122char *
123get_home_dir ()
124{
125 char *home_dir;
126 struct passwd *entry;
127
128 home_dir = (char *)NULL;
129 entry = getpwuid (getuid ());
130 if (entry)
131 home_dir = entry->pw_dir;
132 return (home_dir);
133}
| 76 r = result;
77 *r++ = '\'';
78
79 for (s = string; s && (c = *s); s++)
80 {
81 *r++ = c;
82
83 if (c == '\'')
84 {
85 *r++ = '\\'; /* insert escaped single quote */
86 *r++ = '\'';
87 *r++ = '\''; /* start new quoted string */
88 }
89 }
90
91 *r++ = '\'';
92 *r = '\0';
93
94 return (result);
95}
96
97/* Set the environment variables LINES and COLUMNS to lines and cols,
98 respectively. */
99void
100set_lines_and_columns (lines, cols)
101 int lines, cols;
102{
103 char *b;
104
105#if defined (HAVE_PUTENV)
106 b = xmalloc (24);
107 sprintf (b, "LINES=%d", lines);
108 putenv (b);
109 b = xmalloc (24);
110 sprintf (b, "COLUMNS=%d", cols);
111 putenv (b);
112#else /* !HAVE_PUTENV */
113# if defined (HAVE_SETENV)
114 b = xmalloc (8);
115 sprintf (b, "%d", lines);
116 setenv ("LINES", b, 1);
117 b = xmalloc (8);
118 sprintf (b, "%d", cols);
119 setenv ("COLUMNS", b, 1);
120# endif /* HAVE_SETENV */
121#endif /* !HAVE_PUTENV */
122}
123
124char *
125get_env_value (varname)
126 char *varname;
127{
128 return ((char *)getenv (varname));
129}
130
131char *
132get_home_dir ()
133{
134 char *home_dir;
135 struct passwd *entry;
136
137 home_dir = (char *)NULL;
138 entry = getpwuid (getuid ());
139 if (entry)
140 home_dir = entry->pw_dir;
141 return (home_dir);
142}
|
| 143
144#if !defined (O_NDELAY)
145# if defined (FNDELAY)
146# define O_NDELAY FNDELAY
147# endif
148#endif
149
150int
151unset_nodelay_mode (fd)
152 int fd;
153{
154 int flags, bflags;
155
156 if ((flags = fcntl (fd, F_GETFL, 0)) < 0)
157 return -1;
158
159 bflags = 0;
160
161#ifdef O_NONBLOCK
162 bflags |= O_NONBLOCK;
163#endif
164
165#ifdef O_NDELAY
166 bflags |= O_NDELAY;
167#endif
168
169 if (flags & bflags)
170 {
171 flags &= ~bflags;
172 return (fcntl (fd, F_SETFL, flags));
173 }
174
175 return 0;
176}
|
| |