Commit | Line | Data |
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d60d9f65 SS |
1 | /* |
2 | * rl - command-line interface to read a line from the standard input | |
3 | * (or another fd) using readline. | |
4 | * | |
1b17e766 | 5 | * usage: rl [-p prompt] [-u unit] [-d default] [-n nchars] |
d60d9f65 SS |
6 | */ |
7 | ||
9255ee31 EZ |
8 | /* Copyright (C) 1987-2002 Free Software Foundation, Inc. |
9 | ||
10 | This file is part of the GNU Readline Library, a library for | |
11 | reading lines of text with interactive input and history editing. | |
12 | ||
13 | The GNU Readline Library is free software; you can redistribute it | |
14 | and/or modify it under the terms of the GNU General Public License | |
15 | as published by the Free Software Foundation; either version 2, or | |
16 | (at your option) any later version. | |
17 | ||
18 | The GNU Readline Library is distributed in the hope that it will be | |
19 | useful, but WITHOUT ANY WARRANTY; without even the implied warranty | |
20 | of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
21 | GNU General Public License for more details. | |
22 | ||
23 | The GNU General Public License is often shipped with GNU software, and | |
24 | is generally kept in a file called COPYING or LICENSE. If you do not | |
25 | have a copy of the license, write to the Free Software Foundation, | |
26 | 59 Temple Place, Suite 330, Boston, MA 02111 USA. */ | |
27 | ||
d60d9f65 SS |
28 | #if defined (HAVE_CONFIG_H) |
29 | # include <config.h> | |
30 | #endif | |
31 | ||
32 | #include <stdio.h> | |
33 | #include <sys/types.h> | |
34 | #include "posixstat.h" | |
1b17e766 EZ |
35 | |
36 | #if defined (READLINE_LIBRARY) | |
37 | # include "readline.h" | |
38 | # include "history.h" | |
39 | #else | |
40 | # include <readline/readline.h> | |
41 | # include <readline/history.h> | |
42 | #endif | |
d60d9f65 SS |
43 | |
44 | extern int optind; | |
45 | extern char *optarg; | |
46 | ||
47 | #if !defined (strchr) && !defined (__STDC__) | |
48 | extern char *strrchr(); | |
49 | #endif | |
50 | ||
51 | static char *progname; | |
52 | static char *deftext; | |
53 | ||
54 | static int | |
55 | set_deftext () | |
56 | { | |
57 | if (deftext) | |
58 | { | |
59 | rl_insert_text (deftext); | |
60 | deftext = (char *)NULL; | |
9255ee31 | 61 | rl_startup_hook = (rl_hook_func_t *)NULL; |
d60d9f65 | 62 | } |
1b17e766 | 63 | return 0; |
d60d9f65 SS |
64 | } |
65 | ||
c862e87b | 66 | static void |
d60d9f65 SS |
67 | usage() |
68 | { | |
1b17e766 | 69 | fprintf (stderr, "%s: usage: %s [-p prompt] [-u unit] [-d default] [-n nchars]\n", |
d60d9f65 SS |
70 | progname, progname); |
71 | } | |
72 | ||
1b17e766 | 73 | int |
d60d9f65 SS |
74 | main (argc, argv) |
75 | int argc; | |
76 | char **argv; | |
77 | { | |
78 | char *temp, *prompt; | |
79 | struct stat sb; | |
1b17e766 | 80 | int opt, fd, nch; |
d60d9f65 SS |
81 | FILE *ifp; |
82 | ||
83 | progname = strrchr(argv[0], '/'); | |
84 | if (progname == 0) | |
85 | progname = argv[0]; | |
86 | else | |
87 | progname++; | |
88 | ||
89 | /* defaults */ | |
90 | prompt = "readline$ "; | |
1b17e766 | 91 | fd = nch = 0; |
d60d9f65 SS |
92 | deftext = (char *)0; |
93 | ||
1b17e766 | 94 | while ((opt = getopt(argc, argv, "p:u:d:n:")) != EOF) |
d60d9f65 SS |
95 | { |
96 | switch (opt) | |
97 | { | |
98 | case 'p': | |
99 | prompt = optarg; | |
100 | break; | |
101 | case 'u': | |
102 | fd = atoi(optarg); | |
103 | if (fd < 0) | |
104 | { | |
105 | fprintf (stderr, "%s: bad file descriptor `%s'\n", progname, optarg); | |
106 | exit (2); | |
107 | } | |
108 | break; | |
109 | case 'd': | |
110 | deftext = optarg; | |
111 | break; | |
1b17e766 EZ |
112 | case 'n': |
113 | nch = atoi(optarg); | |
114 | if (nch < 0) | |
115 | { | |
116 | fprintf (stderr, "%s: bad value for -n: `%s'\n", progname, optarg); | |
117 | exit (2); | |
118 | } | |
119 | break; | |
d60d9f65 SS |
120 | default: |
121 | usage (); | |
122 | exit (2); | |
123 | } | |
124 | } | |
125 | ||
126 | if (fd != 0) | |
127 | { | |
128 | if (fstat (fd, &sb) < 0) | |
129 | { | |
130 | fprintf (stderr, "%s: %d: bad file descriptor\n", progname, fd); | |
131 | exit (1); | |
132 | } | |
133 | ifp = fdopen (fd, "r"); | |
134 | rl_instream = ifp; | |
135 | } | |
136 | ||
137 | if (deftext && *deftext) | |
138 | rl_startup_hook = set_deftext; | |
139 | ||
1b17e766 EZ |
140 | if (nch > 0) |
141 | rl_num_chars_to_read = nch; | |
142 | ||
d60d9f65 SS |
143 | temp = readline (prompt); |
144 | ||
145 | /* Test for EOF. */ | |
146 | if (temp == 0) | |
147 | exit (1); | |
148 | ||
9255ee31 | 149 | printf ("%s\n", temp); |
d60d9f65 SS |
150 | exit (0); |
151 | } |