Commit | Line | Data |
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d60d9f65 SS |
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 | ||
c862e87b | 29 | #include <sys/types.h> |
d1857004 | 30 | #include <stdio.h> |
c862e87b | 31 | |
d60d9f65 | 32 | #if defined (HAVE_UNISTD_H) |
d60d9f65 SS |
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 | ||
c862e87b | 48 | #include <pwd.h> |
d60d9f65 | 49 | |
c862e87b JM |
50 | #if !defined (HAVE_GETPW_DECLS) |
51 | extern struct passwd *getpwuid (); | |
52 | #endif /* !HAVE_GETPW_DECLS */ | |
d60d9f65 | 53 | |
c862e87b | 54 | extern char *xmalloc (); |
d60d9f65 | 55 | |
c862e87b JM |
56 | /* All of these functions are resolved from bash if we are linking readline |
57 | as part of bash. */ | |
d60d9f65 SS |
58 | |
59 | /* Does shell-like quoting using single quotes. */ | |
60 | char * | |
61 | single_quote (string) | |
62 | char *string; | |
63 | { | |
64 | register int c; | |
65 | char *result, *r, *s; | |
66 | ||
67 | result = (char *)xmalloc (3 + (3 * strlen (string))); | |
68 | r = result; | |
69 | *r++ = '\''; | |
70 | ||
71 | for (s = string; s && (c = *s); s++) | |
72 | { | |
73 | *r++ = c; | |
74 | ||
75 | if (c == '\'') | |
76 | { | |
77 | *r++ = '\\'; /* insert escaped single quote */ | |
78 | *r++ = '\''; | |
79 | *r++ = '\''; /* start new quoted string */ | |
80 | } | |
81 | } | |
82 | ||
83 | *r++ = '\''; | |
84 | *r = '\0'; | |
85 | ||
86 | return (result); | |
87 | } | |
88 | ||
89 | /* Set the environment variables LINES and COLUMNS to lines and cols, | |
90 | respectively. */ | |
91 | void | |
92 | set_lines_and_columns (lines, cols) | |
93 | int lines, cols; | |
94 | { | |
95 | char *b; | |
96 | ||
97 | #if defined (HAVE_PUTENV) | |
98 | b = xmalloc (24); | |
99 | sprintf (b, "LINES=%d", lines); | |
100 | putenv (b); | |
101 | b = xmalloc (24); | |
102 | sprintf (b, "COLUMNS=%d", cols); | |
103 | putenv (b); | |
104 | #else /* !HAVE_PUTENV */ | |
105 | # if defined (HAVE_SETENV) | |
106 | b = xmalloc (8); | |
107 | sprintf (b, "%d", lines); | |
108 | setenv ("LINES", b, 1); | |
109 | b = xmalloc (8); | |
110 | sprintf (b, "%d", cols); | |
111 | setenv ("COLUMNS", b, 1); | |
112 | # endif /* HAVE_SETENV */ | |
113 | #endif /* !HAVE_PUTENV */ | |
114 | } | |
115 | ||
116 | char * | |
117 | get_env_value (varname) | |
118 | char *varname; | |
119 | { | |
120 | return ((char *)getenv (varname)); | |
121 | } | |
122 | ||
d60d9f65 | 123 | char * |
c862e87b | 124 | get_home_dir () |
d60d9f65 | 125 | { |
c862e87b JM |
126 | char *home_dir; |
127 | struct passwd *entry; | |
128 | ||
129 | home_dir = (char *)NULL; | |
130 | entry = getpwuid (getuid ()); | |
131 | if (entry) | |
132 | home_dir = entry->pw_dir; | |
133 | return (home_dir); | |
134 | } |