1 /*-
2 * SPDX-License-Identifier: BSD-3-Clause
3 *
4 * Copyright (c) 1987, 1993, 1994
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 #if 0
33 #ifndef lint
34 static char sccsid[] = "@(#)print.c 8.3 (Berkeley) 4/2/94";
35 #endif
36 #endif
37
38 #include <sys/cdefs.h>
39 __FBSDID("$FreeBSD: stable/12/usr.bin/ctags/print.c 326025 2017-11-20 19:49:47Z pfg $");
40
41 #include <limits.h>
42 #include <stdio.h>
43 #include <unistd.h>
44
45 #include "ctags.h"
46
47 /*
48 * get_line --
49 * get the line the token of interest occurred on,
50 * prepare it for printing.
51 */
52 void
get_line(void)53 get_line(void)
54 {
55 long saveftell;
56 int c;
57 int cnt;
58 char *cp;
59
60 saveftell = ftell(inf);
61 (void)fseek(inf, lineftell, L_SET);
62 if (xflag)
63 for (cp = lbuf; GETC(!=, EOF) && c != '\n'; *cp++ = c)
64 continue;
65 /*
66 * do all processing here, so we don't step through the
67 * line more than once; means you don't call this routine
68 * unless you're sure you've got a keeper.
69 */
70 else for (cnt = 0, cp = lbuf; GETC(!=, EOF) && cnt < ENDLINE; ++cnt) {
71 if (c == '\\') { /* backslashes */
72 if (cnt > ENDLINE - 2)
73 break;
74 *cp++ = '\\'; *cp++ = '\\';
75 ++cnt;
76 }
77 else if (c == (int)searchar) { /* search character */
78 if (cnt > ENDLINE - 2)
79 break;
80 *cp++ = '\\'; *cp++ = c;
81 ++cnt;
82 }
83 else if (c == '\n') { /* end of keep */
84 *cp++ = '$'; /* can find whole line */
85 break;
86 }
87 else
88 *cp++ = c;
89 }
90 *cp = EOS;
91 (void)fseek(inf, saveftell, L_SET);
92 }
93
94 /*
95 * put_entries --
96 * write out the tags
97 */
98 void
put_entries(NODE * node)99 put_entries(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