[unix-history] / usr.bin / more / option.c

/*
 * Copyright (c) 1988 Mark Nudleman
 * Copyright (c) 1988 Regents of the University of California.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *	This product includes software developed by the University of
 *	California, Berkeley and its contributors.
 * 4. Neither the name of the University nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 */

#ifndef lint
static char sccsid[] = "@(#)option.c	5.11 (Berkeley) 6/1/90";
#endif /* not lint */

#include <stdio.h>
#include <less.h>

int top_scroll;			/* Repaint screen from top */
int bs_mode;			/* How to process backspaces */
int caseless;			/* Do "caseless" searches */
int cbufs = 10;			/* Current number of buffers */
int linenums = 1;		/* Use line numbers */
int quit_at_eof;
int squeeze;			/* Squeeze multiple blank lines into one */
int tabstop = 8;		/* Tab settings */
int tagoption;

char *firstsearch;
extern int sc_height;

option(argc, argv)
	int argc;
	char **argv;
{
	extern char *optarg;
	extern int optind;
	static int sc_window_set = 0;
	int ch;
	char *p;

	/* backward compatible processing for "+/search" */
	char **a;
	for (a = argv; *a; ++a)
		if ((*a)[0] == '+' && (*a)[1] == '/')
			(*a)[0] = '-';

	optind = 1;		/* called twice, re-init getopt. */
	while ((ch = getopt(argc, argv, "0123456789/:ceinst:ux:f")) != EOF)
		switch((char)ch) {
		case '0': case '1': case '2': case '3': case '4':
		case '5': case '6': case '7': case '8': case '9':
			/*
			 * kludge: more was originally designed to take
			 * a number after a dash.
			 */
			if (!sc_window_set) {
				p = argv[optind - 1];
				if (p[0] == '-' && p[1] == ch && !p[2])
					sc_height = atoi(++p);
				else
					sc_height = atoi(argv[optind] + 1);
				sc_window_set = 1;
			}
			break;
		case '/':
			firstsearch = optarg;
			break;
		case 'c':
			top_scroll = 1;
			break;
		case 'e':
			quit_at_eof = 1;
			break;
		case 'i':
			caseless = 1;
			break;
		case 'n':
			linenums = 0;
			break;
		case 's':
			squeeze = 1;
			break;
		case 't':
			tagoption = 1;
			findtag(optarg);
			break;
		case 'u':
			bs_mode = 1;
			break;
		case 'x':
			tabstop = atoi(optarg);
			if (tabstop <= 0)
				tabstop = 8;
			break;
		case 'f':	/* ignore -f, compatability with old more */
			break;
		case '?':
		default:
			fprintf(stderr,
			    "usage: more [-ceinus] [-t tag] [-x tabs] [-/ pattern] [-#] [file ...]\n");
			exit(1);
		}
	return(optind);
}
Commit	Line	Data
2ec5f51d NW	1	/*
	2	* Copyright (c) 1988 Mark Nudleman
	3	* Copyright (c) 1988 Regents of the University of California.
	4	* All rights reserved.
	5	*
	6	* Redistribution and use in source and binary forms, with or without
	7	* modification, are permitted provided that the following conditions
	8	* are met:
	9	* 1. Redistributions of source code must retain the above copyright
	10	* notice, this list of conditions and the following disclaimer.
	11	* 2. Redistributions in binary form must reproduce the above copyright
	12	* notice, this list of conditions and the following disclaimer in the
	13	* documentation and/or other materials provided with the distribution.
	14	* 3. All advertising materials mentioning features or use of this software
	15	* must display the following acknowledgement:
	16	* This product includes software developed by the University of
	17	* California, Berkeley and its contributors.
	18	* 4. Neither the name of the University nor the names of its contributors
	19	* may be used to endorse or promote products derived from this software
	20	* without specific prior written permission.
	21	*
	22	* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
	23	* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
	24	* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
	25	* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
	26	* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
	27	* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
	28	* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
	29	* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
	30	* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
	31	* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
	32	* SUCH DAMAGE.
	33	*/
	34
	35	#ifndef lint
	36	static char sccsid[] = "@(#)option.c 5.11 (Berkeley) 6/1/90";
	37	#endif /* not lint */
	38
	39	#include <stdio.h>
	40	#include <less.h>
	41
	42	int top_scroll; /* Repaint screen from top */
	43	int bs_mode; /* How to process backspaces */
	44	int caseless; /* Do "caseless" searches */
	45	int cbufs = 10; /* Current number of buffers */
	46	int linenums = 1; /* Use line numbers */
	47	int quit_at_eof;
	48	int squeeze; /* Squeeze multiple blank lines into one */
	49	int tabstop = 8; /* Tab settings */
	50	int tagoption;
	51
	52	char *firstsearch;
	53	extern int sc_height;
	54
	55	option(argc, argv)
	56	int argc;
	57	char **argv;
	58	{
	59	extern char *optarg;
	60	extern int optind;
	61	static int sc_window_set = 0;
	62	int ch;
	63	char *p;
	64
65	/* backward compatible processing for "+/search" */
66	char **a;
67	for (a = argv; *a; ++a)
68	if ((a)[0] == '+' && (a)[1] == '/')
69	(*a)[0] = '-';
70
71	optind = 1; /* called twice, re-init getopt. */
72	while ((ch = getopt(argc, argv, "0123456789/:ceinst:ux:f")) != EOF)
73	switch((char)ch) {
74	case '0': case '1': case '2': case '3': case '4':
75	case '5': case '6': case '7': case '8': case '9':
76	/*
77	* kludge: more was originally designed to take
78	* a number after a dash.
79	*/
80	if (!sc_window_set) {
81	p = argv[optind - 1];
82	if (p[0] == '-' && p[1] == ch && !p[2])
83	sc_height = atoi(++p);
84	else
85	sc_height = atoi(argv[optind] + 1);
86	sc_window_set = 1;
87	}
88	break;
89	case '/':
90	firstsearch = optarg;
91	break;
92	case 'c':
93	top_scroll = 1;
94	break;
95	case 'e':
96	quit_at_eof = 1;
97	break;
98	case 'i':
99	caseless = 1;
100	break;
101	case 'n':
102	linenums = 0;
103	break;
104	case 's':
105	squeeze = 1;
106	break;
107	case 't':
108	tagoption = 1;
109	findtag(optarg);
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, compatability with old more */
120	break;
121	case '?':
122	default:
123	fprintf(stderr,
124	"usage: more [-ceinus] [-t tag] [-x tabs] [-/ pattern] [-#] [file ...]\n");
125	exit(1);
126	}
127	return(optind);
128	}