option.c revision 1.6
1 /* $NetBSD: option.c,v 1.6 2003/08/07 09:28:00 agc Exp $ */ 2 3 /* 4 * Copyright (c) 1988, 1993 5 * The Regents of the University of California. All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. Neither the name of the University nor the names of its contributors 16 * may be used to endorse or promote products derived from this software 17 * without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29 * SUCH DAMAGE. 30 */ 31 32 /* 33 * Copyright (c) 1988 Mark Nudleman 34 * 35 * Redistribution and use in source and binary forms, with or without 36 * modification, are permitted provided that the following conditions 37 * are met: 38 * 1. Redistributions of source code must retain the above copyright 39 * notice, this list of conditions and the following disclaimer. 40 * 2. Redistributions in binary form must reproduce the above copyright 41 * notice, this list of conditions and the following disclaimer in the 42 * documentation and/or other materials provided with the distribution. 43 * 3. All advertising materials mentioning features or use of this software 44 * must display the following acknowledgement: 45 * This product includes software developed by the University of 46 * California, Berkeley and its contributors. 47 * 4. Neither the name of the University nor the names of its contributors 48 * may be used to endorse or promote products derived from this software 49 * without specific prior written permission. 50 * 51 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 52 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 53 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 54 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 55 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 56 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 57 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 58 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 59 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 60 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 61 * SUCH DAMAGE. 62 */ 63 64 #include <sys/cdefs.h> 65 #ifndef lint 66 #if 0 67 static char sccsid[] = "@(#)option.c 8.1 (Berkeley) 6/6/93"; 68 #else 69 __RCSID("$NetBSD: option.c,v 1.6 2003/08/07 09:28:00 agc Exp $"); 70 #endif 71 #endif /* not lint */ 72 73 #include <stdio.h> 74 #include <stdlib.h> 75 #include <unistd.h> 76 77 #include "less.h" 78 #include "extern.h" 79 80 int top_scroll; /* Repaint screen from top */ 81 int bs_mode; /* How to process backspaces */ 82 int caseless; /* Do "caseless" searches */ 83 int cbufs = 10; /* Current number of buffers */ 84 int linenums = 1; /* Use line numbers */ 85 int quit_at_eof; 86 int squeeze; /* Squeeze multiple blank lines into one */ 87 int tabstop = 8; /* Tab settings */ 88 89 char *firstsearch; 90 91 int 92 option(argc, argv) 93 int argc; 94 char **argv; 95 { 96 static int sc_window_set = 0; 97 int ch; 98 char *p; 99 100 /* backward compatible processing for "+/search" */ 101 char **a; 102 for (a = argv; *a; ++a) 103 if ((*a)[0] == '+' && (*a)[1] == '/') 104 (*a)[0] = '-'; 105 106 optind = 1; /* called twice, re-init getopt. */ 107 while ((ch = getopt(argc, argv, "0123456789/:ceinst:ux:f")) != -1) 108 switch((char)ch) { 109 case '0': case '1': case '2': case '3': case '4': 110 case '5': case '6': case '7': case '8': case '9': 111 /* 112 * kludge: more was originally designed to take 113 * a number after a dash. 114 */ 115 if (!sc_window_set) { 116 p = argv[optind - 1]; 117 if (p[0] == '-' && p[1] == ch && !p[2]) 118 sc_height = atoi(++p); 119 else 120 sc_height = atoi(argv[optind] + 1); 121 sc_window_set = 1; 122 } 123 break; 124 case '/': 125 firstsearch = optarg; 126 break; 127 case 'c': 128 top_scroll = 1; 129 break; 130 case 'e': 131 quit_at_eof = 1; 132 break; 133 case 'i': 134 caseless = 1; 135 break; 136 case 'n': 137 linenums = 0; 138 break; 139 case 's': 140 squeeze = 1; 141 break; 142 case 'u': 143 bs_mode = 1; 144 break; 145 case 'x': 146 tabstop = atoi(optarg); 147 if (tabstop <= 0) 148 tabstop = 8; 149 break; 150 case 'f': /* ignore -f, compatibility with old more */ 151 break; 152 case '?': 153 default: 154 fprintf(stderr, 155 "usage: more [-ceinus] [-x tabs] [-/ pattern] [-#] [file ...]\n"); 156 exit(1); 157 } 158 return(optind); 159 } 160
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