1 /* $NetBSD: ctags.c,v 1.12 2008/07/21 14:19:22 lukem Exp $ */
2
3 /*
4 * Copyright (c) 1987, 1993, 1994, 1995
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 HAVE_NBTOOL_CONFIG_H
33 #include "nbtool_config.h"
34 #endif
35
36 #include <sys/cdefs.h>
37 #if defined(__COPYRIGHT) && !defined(lint)
38 __COPYRIGHT("@(#) Copyright (c) 1987, 1993, 1994, 1995\
39 The Regents of the University of California. All rights reserved.");
40 #endif /* not lint */
41
42 #if defined(__RCSID) && !defined(lint)
43 #if 0
44 static char sccsid[] = "@(#)ctags.c 8.4 (Berkeley) 2/7/95";
45 #endif
46 __RCSID("$NetBSD: ctags.c,v 1.12 2008/07/21 14:19:22 lukem Exp $");
47 #endif /* not lint */
48
49 #include <err.h>
50 #include <limits.h>
51 #include <stdio.h>
52 #include <string.h>
53 #include <stdlib.h>
54 #include <unistd.h>
55
56 #include "ctags.h"
57
58 /*
59 * ctags: create a tags file
60 */
61
62 NODE *head; /* head of the sorted binary tree */
63
64 /* boolean "func" (see init()) */
65 bool _wht[256], _etk[256], _itk[256], _btk[256], _gd[256];
66
67 FILE *inf; /* ioptr for current input file */
68 FILE *outf; /* ioptr for tags file */
69
70 long lineftell; /* ftell after getc( inf ) == '\n' */
71
72 int lineno; /* line number of current line */
73 int dflag; /* -d: non-macro defines */
74 int tflag; /* -t: create tags for typedefs */
75 int vflag; /* -v: vgrind style index output */
76 int wflag; /* -w: suppress warnings */
77 int xflag; /* -x: cxref style output */
78
79 char *curfile; /* current input file name */
80 char searchar = '/'; /* use /.../ searches by default */
81 char lbuf[LINE_MAX];
82
83 void init(void);
84 void find_entries(char *);
85
86 int
main(int argc,char ** argv)87 main(int argc, char **argv)
88 {
89 static const char *outfile = "tags"; /* output file */
90 int aflag; /* -a: append to tags */
91 int uflag; /* -u: update tags */
92 int exit_val; /* exit value */
93 int step; /* step through args */
94 int ch; /* getopts char */
95 char cmd[100]; /* too ugly to explain */
96
97 aflag = uflag = NO;
98 while ((ch = getopt(argc, argv, "BFadf:tuwvx")) != -1)
99 switch(ch) {
100 case 'B':
101 searchar = '?';
102 break;
103 case 'F':
104 searchar = '/';
105 break;
106 case 'a':
107 aflag++;
108 break;
109 case 'd':
110 dflag++;
111 break;
112 case 'f':
113 outfile = optarg;
114 break;
115 case 't':
116 tflag++;
117 break;
118 case 'u':
119 uflag++;
120 break;
121 case 'w':
122 wflag++;
123 break;
124 case 'v':
125 vflag++;
126 case 'x':
127 xflag++;
128 break;
129 case '?':
130 default:
131 goto usage;
132 }
133 argv += optind;
134 argc -= optind;
135 if (!argc) {
136 usage: (void)fprintf(stderr,
137 "usage: ctags [-BFadtuwvx] [-f tagsfile] file ...\n");
138 exit(1);
139 }
140
141 init();
142
143 for (exit_val = step = 0; step < argc; ++step)
144 if (!(inf = fopen(argv[step], "r"))) {
145 warn("%s", argv[step]);
146 exit_val = 1;
147 }
148 else {
149 curfile = argv[step];
150 find_entries(argv[step]);
151 (void)fclose(inf);
152 }
153
154 if (head) {
155 if (xflag)
156 put_entries(head);
157 else {
158 if (uflag) {
159 for (step = 0; step < argc; step++) {
160 (void)snprintf(cmd, sizeof(cmd),
161 "mv %s OTAGS; fgrep -v '\t%s\t' OTAGS >%s; rm OTAGS",
162 outfile, argv[step],
163 outfile);
164 system(cmd);
165 }
166 ++aflag;
167 }
168 if (!(outf = fopen(outfile, aflag ? "a" : "w")))
169 err(exit_val, "%s", outfile);
170 put_entries(head);
171 (void)fclose(outf);
172 if (uflag) {
173 (void)snprintf(cmd, sizeof(cmd),
174 "sort -o %s %s", outfile, outfile);
175 system(cmd);
176 }
177 }
178 }
179 exit(exit_val);
180 }
181
182 /*
183 * init --
184 * this routine sets up the boolean psuedo-functions which work by
185 * setting boolean flags dependent upon the corresponding character.
186 * Every char which is NOT in that string is false with respect to
187 * the pseudo-function. Therefore, all of the array "_wht" is NO
188 * by default and then the elements subscripted by the chars in
189 * CWHITE are set to YES. Thus, "_wht" of a char is YES if it is in
190 * the string CWHITE, else NO.
191 */
192 void
init(void)193 init(void)
194 {
195 int i;
196 unsigned const char *sp;
197
198 for (i = 0; i < 256; i++) {
199 _wht[i] = _etk[i] = _itk[i] = _btk[i] = NO;
200 _gd[i] = YES;
201 }
202 #define CWHITE " \f\t\n"
203 for (sp = CWHITE; *sp; sp++) /* white space chars */
204 _wht[*sp] = YES;
205 #define CTOKEN " \t\n\"'#()[]{}=-+%*/&|^~!<>;,.:?"
206 for (sp = CTOKEN; *sp; sp++) /* token ending chars */
207 _etk[*sp] = YES;
208 #define CINTOK "ABCDEFGHIJKLMNOPQRSTUVWXYZ_abcdefghijklmnopqrstuvwxyz0123456789"
209 for (sp = CINTOK; *sp; sp++) /* valid in-token chars */
210 _itk[*sp] = YES;
211 #define CBEGIN "ABCDEFGHIJKLMNOPQRSTUVWXYZ_abcdefghijklmnopqrstuvwxyz"
212 for (sp = CBEGIN; *sp; sp++) /* token starting chars */
213 _btk[*sp] = YES;
214 #define CNOTGD ",;"
215 for (sp = CNOTGD; *sp; sp++) /* invalid after-function chars */
216 _gd[*sp] = NO;
217 }
218
219 /*
220 * find_entries --
221 * this routine opens the specified file and calls the function
222 * which searches the file.
223 */
224 void
find_entries(char * file)225 find_entries(char *file)
226 {
227 char *cp;
228
229 lineno = 0; /* should be 1 ?? KB */
230 if ((cp = strrchr(file, '.')) != NULL) {
231 if (cp[1] == 'l' && !cp[2]) {
232 int c;
233
234 for (;;) {
235 if (GETC(==, EOF))
236 return;
237 if (!iswhite(c)) {
238 rewind(inf);
239 break;
240 }
241 }
242 #define LISPCHR ";(["
243 /* lisp */ if (strchr(LISPCHR, c)) {
244 l_entries();
245 return;
246 }
247 /* lex */ else {
248 /*
249 * we search all 3 parts of a lex file
250 * for C references. This may be wrong.
251 */
252 toss_yysec();
253 (void)strlcpy(lbuf, "%%$", sizeof(lbuf));
254 pfnote("yylex", lineno);
255 rewind(inf);
256 }
257 }
258 /* yacc */ else if (cp[1] == 'y' && !cp[2]) {
259 /*
260 * we search only the 3rd part of a yacc file
261 * for C references. This may be wrong.
262 */
263 toss_yysec();
264 (void)strlcpy(lbuf, "%%$", sizeof(lbuf));
265 pfnote("yyparse", lineno);
266 y_entries();
267 }
268 /* fortran */ else if ((cp[1] != 'c' && cp[1] != 'h') && !cp[2]) {
269 if (PF_funcs())
270 return;
271 rewind(inf);
272 }
273 }
274 /* C */ c_entries();
275 }
276