2 * Copyright (c) 1987, 1993, 1994, 1995
3 * The Regents of the University of California. All rights reserved.
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
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. Neither the name of the University nor the names of its contributors
14 * may be used to endorse or promote products derived from this software
15 * without specific prior written permission.
17 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29 * @(#) Copyright (c) 1987, 1993, 1994, 1995 The Regents of the University of California. All rights reserved.
30 * @(#)ctags.c 8.4 (Berkeley) 2/7/95
31 * $FreeBSD: src/usr.bin/ctags/ctags.c,v 1.7.2.1 2001/09/18 04:16:53 mikeh Exp $
44 * ctags: create a tags file
47 NODE *head; /* head of the sorted binary tree */
49 /* boolean "func" (see init()) */
50 bool _wht[256], _etk[256], _itk[256], _btk[256], _gd[256];
52 FILE *inf; /* ioptr for current input file */
53 FILE *outf; /* ioptr for tags file */
55 long lineftell; /* ftell after getc( inf ) == '\n' */
57 int lineno; /* line number of current line */
58 int dflag; /* -d: non-macro defines */
59 int tflag; /* -t: create tags for typedefs */
60 int vflag; /* -v: vgrind style index output */
61 int wflag; /* -w: suppress warnings */
62 int xflag; /* -x: cxref style output */
64 char *curfile; /* current input file name */
65 char searchar = '/'; /* use /.../ searches by default */
69 void find_entries(char *);
70 static void usage(void);
73 main(int argc, char **argv)
75 static const char *outfile = "tags"; /* output file */
76 int aflag; /* -a: append to tags */
77 int uflag; /* -u: update tags */
78 int exit_val; /* exit value */
79 int step; /* step through args */
80 int ch; /* getopts char */
81 char cmd[100]; /* too ugly to explain */
84 while ((ch = getopt(argc, argv, "BFadf:tuwvx")) != -1)
126 for (exit_val = step = 0; step < argc; ++step)
127 if (!(inf = fopen(argv[step], "r"))) {
128 warn("%s", argv[step]);
132 curfile = argv[step];
133 find_entries(argv[step]);
142 for (step = 0; step < argc; step++) {
144 "mv %s OTAGS; fgrep -v '\t%s\t' OTAGS >%s; rm OTAGS",
151 if (!(outf = fopen(outfile, aflag ? "a" : "w")))
152 err(exit_val, "%s", outfile);
156 (void)sprintf(cmd, "sort -o %s %s",
168 (void)fprintf(stderr, "usage: ctags [-BFadtuwvx] [-f tagsfile] file ...\n");
174 * this routine sets up the boolean psuedo-functions which work by
175 * setting boolean flags dependent upon the corresponding character.
176 * Every char which is NOT in that string is false with respect to
177 * the pseudo-function. Therefore, all of the array "_wht" is NO
178 * by default and then the elements subscripted by the chars in
179 * CWHITE are set to YES. Thus, "_wht" of a char is YES if it is in
180 * the string CWHITE, else NO.
186 const unsigned char *sp;
188 for (i = 0; i < 256; i++) {
189 _wht[i] = _etk[i] = _itk[i] = _btk[i] = NO;
192 #define CWHITE " \f\t\n"
193 for (sp = CWHITE; *sp; sp++) /* white space chars */
195 #define CTOKEN " \t\n\"'#()[]{}=-+%*/&|^~!<>;,.:?"
196 for (sp = CTOKEN; *sp; sp++) /* token ending chars */
198 #define CINTOK "ABCDEFGHIJKLMNOPQRSTUVWXYZ_abcdefghijklmnopqrstuvwxyz0123456789"
199 for (sp = CINTOK; *sp; sp++) /* valid in-token chars */
201 #define CBEGIN "ABCDEFGHIJKLMNOPQRSTUVWXYZ_abcdefghijklmnopqrstuvwxyz"
202 for (sp = CBEGIN; *sp; sp++) /* token starting chars */
205 for (sp = CNOTGD; *sp; sp++) /* invalid after-function chars */
211 * this routine opens the specified file and calls the function
212 * which searches the file.
215 find_entries(char *file)
219 lineno = 0; /* should be 1 ?? KB */
220 if ((cp = strrchr(file, '.'))) {
221 if (cp[1] == 'l' && !cp[2]) {
232 #define LISPCHR ";(["
233 /* lisp */ if (strchr(LISPCHR, c)) {
239 * we search all 3 parts of a lex file
240 * for C references. This may be wrong.
243 (void)strcpy(lbuf, "%%$");
244 pfnote("yylex", lineno);
248 /* yacc */ else if (cp[1] == 'y' && !cp[2]) {
250 * we search only the 3rd part of a yacc file
251 * for C references. This may be wrong.
254 (void)strcpy(lbuf, "%%$");
255 pfnote("yyparse", lineno);
258 /* fortran */ else if ((cp[1] != 'c' && cp[1] != 'h') && !cp[2]) {