180 lines
3.4 KiB
C
180 lines
3.4 KiB
C
/*
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* rlcat - cat(1) using readline
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*
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* usage: rlcat
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*/
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/* Copyright (C) 1987-2002 Free Software Foundation, Inc.
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This file is part of the GNU Readline Library, a library for
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reading lines of text with interactive input and history editing.
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The GNU Readline Library is free software; you can redistribute it
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and/or modify it under the terms of the GNU General Public License
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as published by the Free Software Foundation; either version 2, or
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(at your option) any later version.
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The GNU Readline Library is distributed in the hope that it will be
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useful, but WITHOUT ANY WARRANTY; without even the implied warranty
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of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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The GNU General Public License is often shipped with GNU software, and
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is generally kept in a file called COPYING or LICENSE. If you do not
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have a copy of the license, write to the Free Software Foundation,
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59 Temple Place, Suite 330, Boston, MA 02111 USA. */
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#if defined (HAVE_CONFIG_H)
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# include <config.h>
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#endif
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#ifdef HAVE_UNISTD_H
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# include <unistd.h>
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#endif
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#include <sys/types.h>
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#include "posixstat.h"
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#include <stdio.h>
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#include <ctype.h>
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#include <string.h>
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#include <errno.h>
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#ifdef HAVE_STDLIB_H
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# include <stdlib.h>
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#else
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extern void exit();
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#endif
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#ifndef errno
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extern int errno;
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#endif
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#if defined (READLINE_LIBRARY)
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# include "readline.h"
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# include "history.h"
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#else
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# include <readline/readline.h>
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# include <readline/history.h>
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#endif
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extern int optind;
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extern char *optarg;
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static int stdcat();
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static char *progname;
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static int vflag;
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static void
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usage()
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{
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fprintf (stderr, "%s: usage: %s [-vEVN] [filename]\n", progname, progname);
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}
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int
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main (argc, argv)
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int argc;
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char **argv;
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{
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char *temp;
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int opt, Vflag, Nflag;
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progname = strrchr(argv[0], '/');
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if (progname == 0)
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progname = argv[0];
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else
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progname++;
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vflag = Vflag = Nflag = 0;
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while ((opt = getopt(argc, argv, "vEVN")) != EOF)
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{
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switch (opt)
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{
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case 'v':
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vflag = 1;
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break;
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case 'V':
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Vflag = 1;
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break;
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case 'E':
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Vflag = 0;
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break;
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case 'N':
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Nflag = 1;
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break;
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default:
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usage ();
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exit (2);
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}
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}
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argc -= optind;
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argv += optind;
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if (isatty(0) == 0 || argc || Nflag)
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return stdcat(argc, argv);
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rl_variable_bind ("editing-mode", Vflag ? "vi" : "emacs");
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while (temp = readline (""))
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{
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if (*temp)
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add_history (temp);
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printf ("%s\n", temp);
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}
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return (ferror (stdout));
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}
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static int
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fcopy(fp)
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FILE *fp;
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{
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int c;
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char *x;
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while ((c = getc(fp)) != EOF)
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{
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if (vflag && isascii ((unsigned char)c) && isprint((unsigned char)c) == 0)
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{
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x = rl_untranslate_keyseq (c);
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if (fputs (x, stdout) != 0)
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return 1;
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}
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else if (putchar (c) == EOF)
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return 1;
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}
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return (ferror (stdout));
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}
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int
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stdcat (argc, argv)
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int argc;
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char **argv;
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{
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int i, fd, r;
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char *s;
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FILE *fp;
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if (argc == 0)
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return (fcopy(stdin));
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for (i = 0, r = 1; i < argc; i++)
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{
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if (*argv[i] == '-' && argv[i][1] == 0)
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fp = stdin;
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else
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{
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fp = fopen (argv[i], "r");
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if (fp == 0)
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{
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fprintf (stderr, "%s: %s: cannot open: %s\n", progname, argv[i], strerror(errno));
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continue;
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}
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}
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r = fcopy (fp);
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if (fp != stdin)
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fclose(fp);
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}
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return r;
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}
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