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
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49#ifndef errno 50extern int errno; 51#endif 52 53#if defined (READLINE_LIBRARY) 54# include "readline.h" 55# include "history.h" 56#else 57# include <readline/readline.h> 58# include <readline/history.h> 59#endif 60 61extern int optind; 62extern char *optarg; 63 64static int stdcat(); 65 66static char *progname; 67static int vflag; 68 69static void 70usage() 71{ 72 fprintf (stderr, "%s: usage: %s [-vEVN] [filename]\n", progname, progname); 73} 74 75int 76main (argc, argv) 77 int argc; 78 char **argv; 79{ 80 char *temp; 81 int opt, Vflag, Nflag; 82 83 progname = strrchr(argv[0], '/'); 84 if (progname == 0) 85 progname = argv[0]; 86 else 87 progname++; 88 89 vflag = Vflag = Nflag = 0; 90 while ((opt = getopt(argc, argv, "vEVN")) != EOF) 91 { 92 switch (opt) 93 { 94 case 'v': 95 vflag = 1; 96 break; 97 case 'V': 98 Vflag = 1; 99 break; 100 case 'E': 101 Vflag = 0; 102 break; 103 case 'N': 104 Nflag = 1; 105 break; 106 default: 107 usage (); 108 exit (2); 109 } 110 } 111 112 argc -= optind; 113 argv += optind; 114 115 if (isatty(0) == 0 || argc || Nflag) 116 return stdcat(argc, argv); 117 118 rl_variable_bind ("editing-mode", Vflag ? "vi" : "emacs"); 119 while (temp = readline ("")) 120 { 121 if (*temp) 122 add_history (temp); 123 printf ("%s\n", temp); 124 } 125 126 return (ferror (stdout)); 127} 128 129static int 130fcopy(fp) 131 FILE *fp; 132{ 133 int c; 134 char *x; 135 136 while ((c = getc(fp)) != EOF) 137 { 138 if (vflag && isascii ((unsigned char)c) && isprint((unsigned char)c) == 0) 139 { 140 x = rl_untranslate_keyseq (c); 141 if (fputs (x, stdout) != 0) 142 return 1; 143 } 144 else if (putchar (c) == EOF) 145 return 1; 146 } 147 return (ferror (stdout)); 148} 149 150int 151stdcat (argc, argv) 152 int argc; 153 char **argv; 154{ 155 int i, fd, r; 156 char *s; 157 FILE *fp; 158 159 if (argc == 0) 160 return (fcopy(stdin)); 161 162 for (i = 0, r = 1; i < argc; i++) 163 { 164 if (*argv[i] == '-' && argv[i][1] == 0) 165 fp = stdin; 166 else 167 { 168 fp = fopen (argv[i], "r"); 169 if (fp == 0) 170 { 171 fprintf (stderr, "%s: %s: cannot open: %s\n", progname, argv[i], strerror(errno)); 172 continue; 173 } 174 } 175 r = fcopy (fp); 176 if (fp != stdin) 177 fclose(fp); 178 } 179 return r; 180}
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