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1 | /* |
2 | * rlcat - cat(1) using readline | |
3 | * | |
4 | * usage: rlcat | |
5 | */ | |
6 | ||
cc88a640 | 7 | /* Copyright (C) 1987-2009 Free Software Foundation, Inc. |
9255ee31 | 8 | |
cc88a640 | 9 | This file is part of the GNU Readline Library (Readline), a library for |
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10 | reading lines of text with interactive input and history editing. |
11 | ||
cc88a640 JK |
12 | Readline is free software: you can redistribute it and/or modify |
13 | it under the terms of the GNU General Public License as published by | |
14 | the Free Software Foundation, either version 3 of the License, or | |
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15 | (at your option) any later version. |
16 | ||
cc88a640 JK |
17 | Readline is distributed in the hope that it will be useful, |
18 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
19 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
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20 | GNU General Public License for more details. |
21 | ||
cc88a640 JK |
22 | You should have received a copy of the GNU General Public License |
23 | along with Readline. If not, see <http://www.gnu.org/licenses/>. | |
24 | */ | |
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25 | |
26 | #if defined (HAVE_CONFIG_H) | |
27 | # include <config.h> | |
28 | #endif | |
29 | ||
30 | #ifdef HAVE_UNISTD_H | |
31 | # include <unistd.h> | |
32 | #endif | |
33 | ||
34 | #include <sys/types.h> | |
35 | #include "posixstat.h" | |
36 | ||
37 | #include <stdio.h> | |
38 | #include <ctype.h> | |
39 | #include <string.h> | |
40 | #include <errno.h> | |
41 | ||
5bdf8622 DJ |
42 | #ifdef HAVE_STDLIB_H |
43 | # include <stdlib.h> | |
44 | #else | |
45 | extern void exit(); | |
46 | #endif | |
47 | ||
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48 | #ifndef errno |
49 | extern int errno; | |
50 | #endif | |
51 | ||
52 | #if defined (READLINE_LIBRARY) | |
53 | # include "readline.h" | |
54 | # include "history.h" | |
55 | #else | |
56 | # include <readline/readline.h> | |
57 | # include <readline/history.h> | |
58 | #endif | |
59 | ||
60 | extern int optind; | |
61 | extern char *optarg; | |
62 | ||
63 | static int stdcat(); | |
64 | ||
65 | static char *progname; | |
66 | static int vflag; | |
67 | ||
68 | static void | |
69 | usage() | |
70 | { | |
71 | fprintf (stderr, "%s: usage: %s [-vEVN] [filename]\n", progname, progname); | |
72 | } | |
73 | ||
74 | int | |
75 | main (argc, argv) | |
76 | int argc; | |
77 | char **argv; | |
78 | { | |
79 | char *temp; | |
80 | int opt, Vflag, Nflag; | |
81 | ||
82 | progname = strrchr(argv[0], '/'); | |
83 | if (progname == 0) | |
84 | progname = argv[0]; | |
85 | else | |
86 | progname++; | |
87 | ||
88 | vflag = Vflag = Nflag = 0; | |
89 | while ((opt = getopt(argc, argv, "vEVN")) != EOF) | |
90 | { | |
91 | switch (opt) | |
92 | { | |
93 | case 'v': | |
94 | vflag = 1; | |
95 | break; | |
96 | case 'V': | |
97 | Vflag = 1; | |
98 | break; | |
99 | case 'E': | |
100 | Vflag = 0; | |
101 | break; | |
102 | case 'N': | |
103 | Nflag = 1; | |
104 | break; | |
105 | default: | |
106 | usage (); | |
107 | exit (2); | |
108 | } | |
109 | } | |
110 | ||
111 | argc -= optind; | |
112 | argv += optind; | |
113 | ||
114 | if (isatty(0) == 0 || argc || Nflag) | |
115 | return stdcat(argc, argv); | |
116 | ||
117 | rl_variable_bind ("editing-mode", Vflag ? "vi" : "emacs"); | |
118 | while (temp = readline ("")) | |
119 | { | |
120 | if (*temp) | |
121 | add_history (temp); | |
122 | printf ("%s\n", temp); | |
123 | } | |
124 | ||
125 | return (ferror (stdout)); | |
126 | } | |
127 | ||
128 | static int | |
129 | fcopy(fp) | |
130 | FILE *fp; | |
131 | { | |
132 | int c; | |
133 | char *x; | |
134 | ||
135 | while ((c = getc(fp)) != EOF) | |
136 | { | |
137 | if (vflag && isascii ((unsigned char)c) && isprint((unsigned char)c) == 0) | |
138 | { | |
139 | x = rl_untranslate_keyseq (c); | |
140 | if (fputs (x, stdout) != 0) | |
141 | return 1; | |
142 | } | |
143 | else if (putchar (c) == EOF) | |
144 | return 1; | |
145 | } | |
146 | return (ferror (stdout)); | |
147 | } | |
148 | ||
149 | int | |
150 | stdcat (argc, argv) | |
151 | int argc; | |
152 | char **argv; | |
153 | { | |
154 | int i, fd, r; | |
155 | char *s; | |
156 | FILE *fp; | |
157 | ||
158 | if (argc == 0) | |
159 | return (fcopy(stdin)); | |
160 | ||
161 | for (i = 0, r = 1; i < argc; i++) | |
162 | { | |
163 | if (*argv[i] == '-' && argv[i][1] == 0) | |
164 | fp = stdin; | |
165 | else | |
166 | { | |
167 | fp = fopen (argv[i], "r"); | |
168 | if (fp == 0) | |
169 | { | |
170 | fprintf (stderr, "%s: %s: cannot open: %s\n", progname, argv[i], strerror(errno)); | |
171 | continue; | |
172 | } | |
173 | } | |
174 | r = fcopy (fp); | |
175 | if (fp != stdin) | |
176 | fclose(fp); | |
177 | } | |
178 | return r; | |
179 | } |