/usr/share/doc/libreadline6/examples/rlcat.c is in readline-doc 6.3-8ubuntu2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 | /*
* rlcat - cat(1) using readline
*
* usage: rlcat
*/
/* Copyright (C) 1987-2009 Free Software Foundation, Inc.
This file is part of the GNU Readline Library (Readline), a library for
reading lines of text with interactive input and history editing.
Readline is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
Readline is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with Readline. If not, see <http://www.gnu.org/licenses/>.
*/
#if defined (HAVE_CONFIG_H)
# include <config.h>
#endif
#ifdef HAVE_UNISTD_H
# include <unistd.h>
#endif
#include <sys/types.h>
#include "posixstat.h"
#include <stdio.h>
#include <ctype.h>
#include <string.h>
#include <errno.h>
#ifdef HAVE_STDLIB_H
# include <stdlib.h>
#else
extern void exit();
#endif
#ifndef errno
extern int errno;
#endif
#if defined (READLINE_LIBRARY)
# include "readline.h"
# include "history.h"
#else
# include <readline/readline.h>
# include <readline/history.h>
#endif
extern int optind;
extern char *optarg;
static int stdcat();
static char *progname;
static int vflag;
static void
usage()
{
fprintf (stderr, "%s: usage: %s [-vEVN] [filename]\n", progname, progname);
}
int
main (argc, argv)
int argc;
char **argv;
{
char *temp;
int opt, Vflag, Nflag;
progname = strrchr(argv[0], '/');
if (progname == 0)
progname = argv[0];
else
progname++;
vflag = Vflag = Nflag = 0;
while ((opt = getopt(argc, argv, "vEVN")) != EOF)
{
switch (opt)
{
case 'v':
vflag = 1;
break;
case 'V':
Vflag = 1;
break;
case 'E':
Vflag = 0;
break;
case 'N':
Nflag = 1;
break;
default:
usage ();
exit (2);
}
}
argc -= optind;
argv += optind;
if (isatty(0) == 0 || argc || Nflag)
return stdcat(argc, argv);
rl_variable_bind ("editing-mode", Vflag ? "vi" : "emacs");
while (temp = readline (""))
{
if (*temp)
add_history (temp);
printf ("%s\n", temp);
}
return (ferror (stdout));
}
static int
fcopy(fp)
FILE *fp;
{
int c;
char *x;
while ((c = getc(fp)) != EOF)
{
if (vflag && isascii ((unsigned char)c) && isprint((unsigned char)c) == 0)
{
x = rl_untranslate_keyseq (c);
if (fputs (x, stdout) != 0)
return 1;
}
else if (putchar (c) == EOF)
return 1;
}
return (ferror (stdout));
}
int
stdcat (argc, argv)
int argc;
char **argv;
{
int i, fd, r;
char *s;
FILE *fp;
if (argc == 0)
return (fcopy(stdin));
for (i = 0, r = 1; i < argc; i++)
{
if (*argv[i] == '-' && argv[i][1] == 0)
fp = stdin;
else
{
fp = fopen (argv[i], "r");
if (fp == 0)
{
fprintf (stderr, "%s: %s: cannot open: %s\n", progname, argv[i], strerror(errno));
continue;
}
}
r = fcopy (fp);
if (fp != stdin)
fclose(fp);
}
return r;
}
|