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1 | /* |
2 | * rlcat - cat(1) using readline | |
3 | * | |
4 | * usage: rlcat | |
5 | */ | |
6 | ||
7 | /* Copyright (C) 1987-2002 Free Software Foundation, Inc. | |
8 | ||
9 | This file is part of the GNU Readline Library, a library for | |
10 | reading lines of text with interactive input and history editing. | |
11 | ||
12 | The GNU Readline Library is free software; you can redistribute it | |
13 | and/or modify it under the terms of the GNU General Public License | |
14 | as published by the Free Software Foundation; either version 2, or | |
15 | (at your option) any later version. | |
16 | ||
17 | The GNU Readline Library is distributed in the hope that it will be | |
18 | useful, but WITHOUT ANY WARRANTY; without even the implied warranty | |
19 | of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
20 | GNU General Public License for more details. | |
21 | ||
22 | The GNU General Public License is often shipped with GNU software, and | |
23 | is generally kept in a file called COPYING or LICENSE. If you do not | |
24 | have a copy of the license, write to the Free Software Foundation, | |
25 | 59 Temple Place, Suite 330, Boston, MA 02111 USA. */ | |
26 | ||
27 | #if defined (HAVE_CONFIG_H) | |
28 | # include <config.h> | |
29 | #endif | |
30 | ||
31 | #ifdef HAVE_UNISTD_H | |
32 | # include <unistd.h> | |
33 | #endif | |
34 | ||
35 | #include <sys/types.h> | |
36 | #include "posixstat.h" | |
37 | ||
38 | #include <stdio.h> | |
39 | #include <ctype.h> | |
40 | #include <string.h> | |
41 | #include <errno.h> | |
42 | ||
43 | #ifndef errno | |
44 | extern int errno; | |
45 | #endif | |
46 | ||
47 | #if defined (READLINE_LIBRARY) | |
48 | # include "readline.h" | |
49 | # include "history.h" | |
50 | #else | |
51 | # include <readline/readline.h> | |
52 | # include <readline/history.h> | |
53 | #endif | |
54 | ||
55 | extern int optind; | |
56 | extern char *optarg; | |
57 | ||
58 | static int stdcat(); | |
59 | ||
60 | static char *progname; | |
61 | static int vflag; | |
62 | ||
63 | static void | |
64 | usage() | |
65 | { | |
66 | fprintf (stderr, "%s: usage: %s [-vEVN] [filename]\n", progname, progname); | |
67 | } | |
68 | ||
69 | int | |
70 | main (argc, argv) | |
71 | int argc; | |
72 | char **argv; | |
73 | { | |
74 | char *temp; | |
75 | int opt, Vflag, Nflag; | |
76 | ||
77 | progname = strrchr(argv[0], '/'); | |
78 | if (progname == 0) | |
79 | progname = argv[0]; | |
80 | else | |
81 | progname++; | |
82 | ||
83 | vflag = Vflag = Nflag = 0; | |
84 | while ((opt = getopt(argc, argv, "vEVN")) != EOF) | |
85 | { | |
86 | switch (opt) | |
87 | { | |
88 | case 'v': | |
89 | vflag = 1; | |
90 | break; | |
91 | case 'V': | |
92 | Vflag = 1; | |
93 | break; | |
94 | case 'E': | |
95 | Vflag = 0; | |
96 | break; | |
97 | case 'N': | |
98 | Nflag = 1; | |
99 | break; | |
100 | default: | |
101 | usage (); | |
102 | exit (2); | |
103 | } | |
104 | } | |
105 | ||
106 | argc -= optind; | |
107 | argv += optind; | |
108 | ||
109 | if (isatty(0) == 0 || argc || Nflag) | |
110 | return stdcat(argc, argv); | |
111 | ||
112 | rl_variable_bind ("editing-mode", Vflag ? "vi" : "emacs"); | |
113 | while (temp = readline ("")) | |
114 | { | |
115 | if (*temp) | |
116 | add_history (temp); | |
117 | printf ("%s\n", temp); | |
118 | } | |
119 | ||
120 | return (ferror (stdout)); | |
121 | } | |
122 | ||
123 | static int | |
124 | fcopy(fp) | |
125 | FILE *fp; | |
126 | { | |
127 | int c; | |
128 | char *x; | |
129 | ||
130 | while ((c = getc(fp)) != EOF) | |
131 | { | |
132 | if (vflag && isascii ((unsigned char)c) && isprint((unsigned char)c) == 0) | |
133 | { | |
134 | x = rl_untranslate_keyseq (c); | |
135 | if (fputs (x, stdout) != 0) | |
136 | return 1; | |
137 | } | |
138 | else if (putchar (c) == EOF) | |
139 | return 1; | |
140 | } | |
141 | return (ferror (stdout)); | |
142 | } | |
143 | ||
144 | int | |
145 | stdcat (argc, argv) | |
146 | int argc; | |
147 | char **argv; | |
148 | { | |
149 | int i, fd, r; | |
150 | char *s; | |
151 | FILE *fp; | |
152 | ||
153 | if (argc == 0) | |
154 | return (fcopy(stdin)); | |
155 | ||
156 | for (i = 0, r = 1; i < argc; i++) | |
157 | { | |
158 | if (*argv[i] == '-' && argv[i][1] == 0) | |
159 | fp = stdin; | |
160 | else | |
161 | { | |
162 | fp = fopen (argv[i], "r"); | |
163 | if (fp == 0) | |
164 | { | |
165 | fprintf (stderr, "%s: %s: cannot open: %s\n", progname, argv[i], strerror(errno)); | |
166 | continue; | |
167 | } | |
168 | } | |
169 | r = fcopy (fp); | |
170 | if (fp != stdin) | |
171 | fclose(fp); | |
172 | } | |
173 | return r; | |
174 | } |