File: [local] / src / usr.bin / ctags / ctags.c (download)
Revision 1.18, Fri Oct 9 01:37:07 2015 UTC (8 years, 8 months ago) by deraadt
Branch: MAIN
CVS Tags: OPENBSD_7_2_BASE, OPENBSD_7_2, OPENBSD_7_1_BASE, OPENBSD_7_1, OPENBSD_7_0_BASE, OPENBSD_7_0, OPENBSD_6_9_BASE, OPENBSD_6_9, OPENBSD_6_8_BASE, OPENBSD_6_8, OPENBSD_6_7_BASE, OPENBSD_6_7, OPENBSD_6_6_BASE, OPENBSD_6_6, OPENBSD_6_5_BASE, OPENBSD_6_5, OPENBSD_6_4_BASE, OPENBSD_6_4, OPENBSD_6_3_BASE, OPENBSD_6_3, OPENBSD_6_2_BASE, OPENBSD_6_2, OPENBSD_6_1_BASE, OPENBSD_6_1, OPENBSD_6_0_BASE, OPENBSD_6_0, OPENBSD_5_9_BASE, OPENBSD_5_9 Changes since 1.17: +3 -3 lines
Change all tame callers to namechange to pledge(2).
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/* $OpenBSD: ctags.c,v 1.18 2015/10/09 01:37:07 deraadt Exp $ */
/* $NetBSD: ctags.c,v 1.4 1995/09/02 05:57:23 jtc Exp $ */
/*
* Copyright (c) 1987, 1993, 1994, 1995
* The Regents of the University of California. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include <err.h>
#include <limits.h>
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <unistd.h>
#include "ctags.h"
/*
* ctags: create a tags file
*/
NODE *head; /* head of the sorted binary tree */
/* boolean "func" (see init()) */
bool _wht[256], _itk[256], _btk[256];
FILE *inf; /* ioptr for current input file */
FILE *outf; /* ioptr for tags file */
long lineftell; /* ftell after getc( inf ) == '\n' */
int lineno; /* line number of current line */
int dflag; /* -d: non-macro defines */
int vflag; /* -v: vgrind style index output */
int wflag; /* -w: suppress warnings */
int xflag; /* -x: cxref style output */
char *curfile; /* current input file name */
char searchar = '/'; /* use /.../ searches by default */
char lbuf[LINE_MAX];
void init(void);
void find_entries(char *);
void preload_entries(char *, int, char *[]);
int
main(int argc, char *argv[])
{
static char *outfile = "tags"; /* output file */
int aflag; /* -a: append to tags */
int uflag; /* -u: update tags */
int exit_val; /* exit value */
int step; /* step through args */
int ch; /* getopts char */
if (pledge("stdio rpath wpath cpath", NULL) == -1)
err(1, "pledge");
aflag = uflag = NO;
while ((ch = getopt(argc, argv, "BFadf:tuwvx")) != -1)
switch(ch) {
case 'B':
searchar = '?';
break;
case 'F':
searchar = '/';
break;
case 'a':
aflag = 1;
break;
case 'd':
dflag = 1;
break;
case 'f':
outfile = optarg;
break;
case 't':
/* backwards compatibility */
break;
case 'u':
uflag = 1;
break;
case 'w':
wflag = 1;
break;
case 'v':
vflag = 1;
case 'x':
xflag = 1;
break;
case '?':
default:
goto usage;
}
argv += optind;
argc -= optind;
if (!argc) {
usage: (void)fprintf(stderr,
"usage: ctags [-aBdFuvwx] [-f tagsfile] file ...\n");
exit(1);
}
init();
if (uflag && !vflag && !xflag)
preload_entries(outfile, argc, argv);
for (exit_val = step = 0; step < argc; ++step)
if (!(inf = fopen(argv[step], "r"))) {
warn("%s", argv[step]);
exit_val = 1;
}
else {
curfile = argv[step];
find_entries(argv[step]);
(void)fclose(inf);
}
if (head) {
if (xflag)
put_entries(head);
else {
if (!(outf = fopen(outfile, aflag ? "a" : "w")))
err(exit_val, "%s", outfile);
put_entries(head);
(void)fclose(outf);
}
}
exit(exit_val);
}
/*
* init --
* this routine sets up the boolean psuedo-functions which work by
* setting boolean flags dependent upon the corresponding character.
* Every char which is NOT in that string is false with respect to
* the pseudo-function. Therefore, all of the array "_wht" is NO
* by default and then the elements subscripted by the chars in
* CWHITE are set to YES. Thus, "_wht" of a char is YES if it is in
* the string CWHITE, else NO.
*/
void
init(void)
{
int i;
unsigned char *sp;
for (i = 0; i < 256; i++)
_wht[i] = _itk[i] = _btk[i] = NO;
#define CWHITE " \f\t\n"
for (sp = CWHITE; *sp; sp++) /* white space chars */
_wht[*sp] = YES;
#define CINTOK "ABCDEFGHIJKLMNOPQRSTUVWXYZ_abcdefghijklmnopqrstuvwxyz0123456789"
for (sp = CINTOK; *sp; sp++) /* valid in-token chars */
_itk[*sp] = YES;
#define CBEGIN "ABCDEFGHIJKLMNOPQRSTUVWXYZ_abcdefghijklmnopqrstuvwxyz"
for (sp = CBEGIN; *sp; sp++) /* token starting chars */
_btk[*sp] = YES;
}
/*
* find_entries --
* this routine opens the specified file and calls the function
* which searches the file.
*/
void
find_entries(char *file)
{
char *cp;
lineno = 0; /* should be 1 ?? KB */
if ((cp = strrchr(file, '.'))) {
if (cp[1] == 'l' && !cp[2]) {
int c;
for (;;) {
if (GETC(==, EOF))
return;
if (!iswhite(c)) {
rewind(inf);
break;
}
}
#define LISPCHR ";(["
/* lisp */ if (strchr(LISPCHR, c)) {
l_entries();
return;
}
/* lex */ else {
/*
* we search all 3 parts of a lex file
* for C references. This may be wrong.
*/
toss_yysec();
(void)strlcpy(lbuf, "%%$", sizeof lbuf);
pfnote("yylex", lineno);
rewind(inf);
}
}
/* yacc */ else if (cp[1] == 'y' && !cp[2]) {
/*
* we search only the 3rd part of a yacc file
* for C references. This may be wrong.
*/
toss_yysec();
(void)strlcpy(lbuf, "%%$", sizeof lbuf);
pfnote("yyparse", lineno);
y_entries();
}
/* fortran */ else if ((cp[1] != 'c' && cp[1] != 'h') && !cp[2]) {
if (PF_funcs())
return;
rewind(inf);
}
}
/* C */ c_entries();
}
void
preload_entries(char *tagsfile, int argc, char *argv[])
{
FILE *fp;
char line[LINE_MAX];
char *entry = NULL;
char *file = NULL;
char *pattern = NULL;
char *eol;
int i;
in_preload = YES;
if ((fp = fopen(tagsfile, "r")) == NULL)
err(1, "preload_entries: %s", tagsfile);
while (1) {
next:
if (fgets(line, sizeof(line), fp) == NULL)
break;
if ((eol = strchr(line, '\n')) == NULL)
errx(1, "preload_entries: line too long");
*eol = '\0';
/* extract entry */
entry = line;
if ((file = strchr(line, '\t')) == NULL)
errx(1, "preload_entries: couldn't parse entry: %s",
tagsfile);
*file = '\0';
/* extract file */
file++;
if ((pattern = strchr(file, '\t')) == NULL)
errx(1, "preload_entries: couldn't parse filename: %s",
tagsfile);
*pattern = '\0';
/* skip this file ? */
for(i = 0; i < argc; i++)
if (strcmp(file, argv[i]) == 0)
goto next;
/* rest of string is pattern */
pattern++;
/* grab searchar, and don't keep it around the pattern */
if ((pattern[0] == '/' || pattern[0] == '?')
&& pattern[1] == '^') {
i = strlen(pattern);
if (pattern[i-1] == pattern[0])
/* remove searchar at end */
pattern[i-1] = '\0';
else
errx(1, "preload_entries: couldn't parse "
"pattern: %s", tagsfile);
/* remove searchar at begin */
pattern += 2;
}
/* add entry */
if ((curfile = strdup(file)) == NULL)
err(1, "preload_entries: strdup");
(void)strlcpy(lbuf, pattern, sizeof(lbuf));
pfnote(entry, 0);
}
if (ferror(fp))
err(1, "preload_entries: fgets");
(void)fclose(fp);
in_preload = NO;
}