]>
Commit | Line | Data |
---|---|---|
d166f048 JA |
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 | |
11 | as published by the Free Software Foundation; either version 1, 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, | |
22 | 675 Mass Ave, Cambridge, MA 02139, USA. */ | |
23 | #define READLINE_LIBRARY | |
24 | ||
25 | #if defined (HAVE_CONFIG_H) | |
26 | # include <config.h> | |
27 | #endif | |
28 | ||
b72432fd JA |
29 | #include <sys/types.h> |
30 | ||
d166f048 JA |
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 | ||
cce855bc JA |
41 | #if defined (HAVE_STRING_H) |
42 | # include <string.h> | |
43 | #else | |
44 | # include <strings.h> | |
45 | #endif /* !HAVE_STRING_H */ | |
46 | ||
b72432fd | 47 | #include <pwd.h> |
d166f048 | 48 | |
b72432fd JA |
49 | #if !defined (HAVE_GETPW_DECLS) |
50 | extern struct passwd *getpwuid (); | |
51 | #endif /* !HAVE_GETPW_DECLS */ | |
d166f048 | 52 | |
b72432fd | 53 | extern char *xmalloc (); |
d166f048 | 54 | |
b72432fd JA |
55 | /* All of these functions are resolved from bash if we are linking readline |
56 | as part of bash. */ | |
d166f048 JA |
57 | |
58 | /* Does shell-like quoting using single quotes. */ | |
59 | char * | |
60 | single_quote (string) | |
61 | char *string; | |
62 | { | |
63 | register int c; | |
64 | char *result, *r, *s; | |
65 | ||
66 | result = (char *)xmalloc (3 + (3 * 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. */ | |
90 | void | |
91 | set_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 | ||
115 | char * | |
116 | get_env_value (varname) | |
117 | char *varname; | |
118 | { | |
119 | return ((char *)getenv (varname)); | |
120 | } | |
121 | ||
d166f048 | 122 | char * |
b72432fd | 123 | get_home_dir () |
d166f048 | 124 | { |
b72432fd JA |
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 | } |