1 /* $NetBSD: option.c,v 1.7 2003/10/13 14:34:25 agc Exp $ */ 2 3 /* 4 * Copyright (c) 1988 Mark Nudelman 5 * Copyright (c) 1988, 1993 6 * The Regents of the University of California. All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. Neither the name of the University nor the names of its contributors 17 * may be used to endorse or promote products derived from this software 18 * without specific prior written permission. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30 * SUCH DAMAGE. 31 */ 32 33 #include <sys/cdefs.h> 34 #ifndef lint 35 #if 0 36 static char sccsid[] = "@(#)option.c 8.1 (Berkeley) 6/6/93"; 37 #else 38 __RCSID("$NetBSD: option.c,v 1.7 2003/10/13 14:34:25 agc Exp $"); 39 #endif 40 #endif /* not lint */ 41 42 #include <stdio.h> 43 #include <stdlib.h> 44 #include <unistd.h> 45 46 #include "less.h" 47 #include "extern.h" 48 49 int top_scroll; /* Repaint screen from top */ 50 int bs_mode; /* How to process backspaces */ 51 int caseless; /* Do "caseless" searches */ 52 int cbufs = 10; /* Current number of buffers */ 53 int linenums = 1; /* Use line numbers */ 54 int quit_at_eof; 55 int squeeze; /* Squeeze multiple blank lines into one */ 56 int tabstop = 8; /* Tab settings */ 57 58 char *firstsearch; 59 60 int 61 option(argc, argv) 62 int argc; 63 char **argv; 64 { 65 static int sc_window_set = 0; 66 int ch; 67 char *p; 68 69 /* backward compatible processing for "+/search" */ 70 char **a; 71 for (a = argv; *a; ++a) 72 if ((*a)[0] == '+' && (*a)[1] == '/') 73 (*a)[0] = '-'; 74 75 optind = 1; /* called twice, re-init getopt. */ 76 while ((ch = getopt(argc, argv, "0123456789/:ceinst:ux:f")) != -1) 77 switch((char)ch) { 78 case '0': case '1': case '2': case '3': case '4': 79 case '5': case '6': case '7': case '8': case '9': 80 /* 81 * kludge: more was originally designed to take 82 * a number after a dash. 83 */ 84 if (!sc_window_set) { 85 p = argv[optind - 1]; 86 if (p[0] == '-' && p[1] == ch && !p[2]) 87 sc_height = atoi(++p); 88 else 89 sc_height = atoi(argv[optind] + 1); 90 sc_window_set = 1; 91 } 92 break; 93 case '/': 94 firstsearch = optarg; 95 break; 96 case 'c': 97 top_scroll = 1; 98 break; 99 case 'e': 100 quit_at_eof = 1; 101 break; 102 case 'i': 103 caseless = 1; 104 break; 105 case 'n': 106 linenums = 0; 107 break; 108 case 's': 109 squeeze = 1; 110 break; 111 case 'u': 112 bs_mode = 1; 113 break; 114 case 'x': 115 tabstop = atoi(optarg); 116 if (tabstop <= 0) 117 tabstop = 8; 118 break; 119 case 'f': /* ignore -f, compatibility with old more */ 120 break; 121 case '?': 122 default: 123 fprintf(stderr, 124 "usage: more [-ceinus] [-x tabs] [-/ pattern] [-#] [file ...]\n"); 125 exit(1); 126 } 127 return(optind); 128 } 129