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129 lines
3.8 KiB
C
129 lines
3.8 KiB
C
/*
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* Copyright (c) 1988 Mark Nudleman
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* Copyright (c) 1988, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#ifndef lint
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static char sccsid[] = "@(#)option.c 8.1 (Berkeley) 6/6/93";
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#endif /* not lint */
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#include <stdio.h>
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#include <less.h>
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int top_scroll; /* Repaint screen from top */
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int bs_mode; /* How to process backspaces */
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int caseless; /* Do "caseless" searches */
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int cbufs = 10; /* Current number of buffers */
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int linenums = 1; /* Use line numbers */
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int quit_at_eof;
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int squeeze; /* Squeeze multiple blank lines into one */
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int tabstop = 8; /* Tab settings */
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int tagoption;
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char *firstsearch;
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extern int sc_height;
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option(argc, argv)
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int argc;
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char **argv;
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{
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extern char *optarg;
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extern int optind;
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static int sc_window_set = 0;
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int ch;
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char *p;
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/* backward compatible processing for "+/search" */
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char **a;
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for (a = argv; *a; ++a)
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if ((*a)[0] == '+' && (*a)[1] == '/')
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(*a)[0] = '-';
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optind = 1; /* called twice, re-init getopt. */
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while ((ch = getopt(argc, argv, "0123456789/:ceinst:ux:f")) != -1)
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switch((char)ch) {
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case '0': case '1': case '2': case '3': case '4':
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case '5': case '6': case '7': case '8': case '9':
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/*
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* kludge: more was originally designed to take
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* a number after a dash.
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*/
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if (!sc_window_set) {
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p = argv[optind - 1];
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if (p[0] == '-' && p[1] == ch && !p[2])
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sc_height = atoi(++p);
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else
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sc_height = atoi(argv[optind] + 1);
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sc_window_set = 1;
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}
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break;
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case '/':
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firstsearch = optarg;
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break;
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case 'c':
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top_scroll = 1;
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break;
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case 'e':
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quit_at_eof = 1;
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break;
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case 'i':
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caseless = 1;
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break;
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case 'n':
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linenums = 0;
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break;
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case 's':
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squeeze = 1;
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break;
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case 't':
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tagoption = 1;
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findtag(optarg);
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break;
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case 'u':
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bs_mode = 1;
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break;
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case 'x':
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tabstop = atoi(optarg);
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if (tabstop <= 0)
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tabstop = 8;
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break;
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case 'f': /* ignore -f, compatability with old more */
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break;
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case '?':
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default:
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fprintf(stderr,
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"usage: more [-ceinus] [-t tag] [-x tabs] [-/ pattern] [-#] [file ...]\n");
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exit(1);
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}
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return(optind);
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}
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