print.c revision 1590 
1/*
2 * Copyright (c) 1987, 1993, 1994
3 *	The Regents of the University of California.  All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 *    notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 *    notice, this list of conditions and the following disclaimer in the
12 *    documentation and/or other materials provided with the distribution.
13 * 3. All advertising materials mentioning features or use of this software
14 *    must display the following acknowledgement:
15 *	This product includes software developed by the University of
16 *	California, Berkeley and its contributors.
17 * 4. Neither the name of the University nor the names of its contributors
18 *    may be used to endorse or promote products derived from this software
19 *    without specific prior written permission.
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31 * SUCH DAMAGE.
32 */
33
34#ifndef lint
35static char sccsid[] = "@(#)print.c	8.3 (Berkeley) 4/2/94";
36#endif /* not lint */
37
38#include <limits.h>
39#include <stdio.h>
40#include <stdlib.h>
41#include <string.h>
42#include <unistd.h>
43
44#include "ctags.h"
45
46/*
47 * getline --
48 *	get the line the token of interest occurred on,
49 *	prepare it for printing.
50 */
51void
52getline()
53{
54	long	saveftell;
55	int	c;
56	int	cnt;
57	char	*cp;
58
59	saveftell = ftell(inf);
60	(void)fseek(inf, lineftell, L_SET);
61	if (xflag)
62		for (cp = lbuf; GETC(!=, '\n'); *cp++ = c)
63			continue;
64	/*
65	 * do all processing here, so we don't step through the
66	 * line more than once; means you don't call this routine
67	 * unless you're sure you've got a keeper.
68	 */
69	else for (cnt = 0, cp = lbuf; GETC(!=, EOF) && cnt < ENDLINE; ++cnt) {
70		if (c == '\\') {		/* backslashes */
71			if (cnt > ENDLINE - 2)
72				break;
73			*cp++ = '\\'; *cp++ = '\\';
74			++cnt;
75		}
76		else if (c == (int)searchar) {	/* search character */
77			if (cnt > ENDLINE - 2)
78				break;
79			*cp++ = '\\'; *cp++ = c;
80			++cnt;
81		}
82		else if (c == '\n') {	/* end of keep */
83			*cp++ = '$';		/* can find whole line */
84			break;
85		}
86		else
87			*cp++ = c;
88	}
89	*cp = EOS;
90	(void)fseek(inf, saveftell, L_SET);
91}
92
93/*
94 * put_entries --
95 *	write out the tags
96 */
97void
98put_entries(node)
99	NODE	*node;
100{
101
102	if (node->left)
103		put_entries(node->left);
104	if (vflag)
105		printf("%s %s %d\n",
106		    node->entry, node->file, (node->lno + 63) / 64);
107	else if (xflag)
108		printf("%-16s%4d %-16s %s\n",
109		    node->entry, node->lno, node->file, node->pat);
110	else
111		fprintf(outf, "%s\t%s\t%c^%s%c\n",
112		    node->entry, node->file, searchar, node->pat, searchar);
113	if (node->right)
114		put_entries(node->right);
115}
116