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: head/usr.bin/ctags/ctags.c 216370 2010-12-11 08:32:16Z joel $
48 * ctags: create a tags file
51 NODE
*head
; /* head of the sorted binary tree */
53 /* boolean "func" (see init()) */
54 bool _wht
[256], _etk
[256], _itk
[256], _btk
[256], _gd
[256];
56 FILE *inf
; /* ioptr for current input file */
57 FILE *outf
; /* ioptr for tags file */
59 long lineftell
; /* ftell after getc( inf ) == '\n' */
61 int lineno
; /* line number of current line */
62 int dflag
; /* -d: non-macro defines */
63 int tflag
; /* -t: create tags for typedefs */
64 int vflag
; /* -v: vgrind style index output */
65 int wflag
; /* -w: suppress warnings */
66 int xflag
; /* -x: cxref style output */
68 char *curfile
; /* current input file name */
69 char searchar
= '/'; /* use /.../ searches by default */
73 void find_entries(char *);
74 static void usage(void);
77 main(int argc
, char **argv
)
79 static const char *outfile
= "tags"; /* output file */
80 int aflag
; /* -a: append to tags */
81 int uflag
; /* -u: update tags */
82 int exit_val
; /* exit value */
83 int step
; /* step through args */
84 int ch
; /* getopts char */
86 setlocale(LC_ALL
, "");
90 while ((ch
= getopt(argc
, argv
, "BFTadf:tuwvx")) != -1)
134 setlocale(LC_COLLATE
, "C");
138 for (exit_val
= step
= 0; step
< argc
; ++step
)
139 if (!(inf
= fopen(argv
[step
], "r"))) {
140 warn("%s", argv
[step
]);
144 curfile
= argv
[step
];
145 find_entries(argv
[step
]);
157 if ((oldf
= fopen(outfile
, "r")) == NULL
)
158 err(1, "opening %s", outfile
);
160 err(1, "unlinking %s", outfile
);
161 if ((outf
= fopen(outfile
, "w")) == NULL
)
162 err(1, "recreating %s", outfile
);
163 if ((regx
= calloc(argc
, sizeof(regex_t
))) == NULL
)
165 for (step
= 0; step
< argc
; step
++) {
167 strlcat(lbuf
, argv
[step
], LINE_MAX
);
168 strlcat(lbuf
, "\t", LINE_MAX
);
169 if (regcomp(regx
+ step
, lbuf
,
171 warn("RE compilation failed");
174 while (fgets(lbuf
, LINE_MAX
, oldf
)) {
175 for (step
= 0; step
< argc
; step
++)
176 if (regexec(regx
+ step
,
177 lbuf
, 0, NULL
, 0) == 0)
181 for (step
= 0; step
< argc
; step
++)
182 regfree(regx
+ step
);
188 if (!(outf
= fopen(outfile
, aflag
? "a" : "w")))
189 err(1, "%s", outfile
);
195 if ((pid
= fork()) == -1)
196 err(1, "fork failed");
198 execlp("sort", "sort", "-o", outfile
,
200 err(1, "exec of sort failed");
202 /* Just assume the sort went OK. The old code
203 did not do any checks either. */
214 fprintf(stderr
, "usage: ctags [-BFTadtuwvx] [-f tagsfile] file ...\n");
220 * this routine sets up the boolean pseudo-functions which work by
221 * setting boolean flags dependent upon the corresponding character.
222 * Every char which is NOT in that string is false with respect to
223 * the pseudo-function. Therefore, all of the array "_wht" is NO
224 * by default and then the elements subscripted by the chars in
225 * CWHITE are set to YES. Thus, "_wht" of a char is YES if it is in
226 * the string CWHITE, else NO.
232 const unsigned char *sp
;
234 for (i
= 0; i
< 256; i
++) {
235 _wht
[i
] = _etk
[i
] = _itk
[i
] = _btk
[i
] = NO
;
238 #define CWHITE " \f\t\n"
239 for (sp
= CWHITE
; *sp
; sp
++) /* white space chars */
241 #define CTOKEN " \t\n\"'#()[]{}=-+%*/&|^~!<>;,.:?"
242 for (sp
= CTOKEN
; *sp
; sp
++) /* token ending chars */
244 #define CINTOK "ABCDEFGHIJKLMNOPQRSTUVWXYZ_abcdefghijklmnopqrstuvwxyz0123456789"
245 for (sp
= CINTOK
; *sp
; sp
++) /* valid in-token chars */
247 #define CBEGIN "ABCDEFGHIJKLMNOPQRSTUVWXYZ_abcdefghijklmnopqrstuvwxyz"
248 for (sp
= CBEGIN
; *sp
; sp
++) /* token starting chars */
251 for (sp
= CNOTGD
; *sp
; sp
++) /* invalid after-function chars */
257 * this routine opens the specified file and calls the function
258 * which searches the file.
261 find_entries(char *file
)
265 lineno
= 0; /* should be 1 ?? KB */
266 if ((cp
= strrchr(file
, '.'))) {
267 if (cp
[1] == 'l' && !cp
[2]) {
278 #define LISPCHR ";(["
279 /* lisp */ if (strchr(LISPCHR
, c
)) {
285 * we search all 3 parts of a lex file
286 * for C references. This may be wrong.
290 pfnote("yylex", lineno
);
294 /* yacc */ else if (cp
[1] == 'y' && !cp
[2]) {
296 * we search only the 3rd part of a yacc file
297 * for C references. This may be wrong.
301 pfnote("yyparse", lineno
);
304 /* fortran */ else if ((cp
[1] != 'c' && cp
[1] != 'h') && !cp
[2]) {