/* * 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. * 4. 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. */ #ifndef lint static const char copyright[] = "@(#) Copyright (c) 1987, 1993, 1994, 1995\n\ The Regents of the University of California. All rights reserved.\n"; #endif #if 0 #ifndef lint static char sccsid[] = "@(#)ctags.c 8.4 (Berkeley) 2/7/95"; #endif #endif #include #include #include __FBSDID("$FreeBSD$"); #include #include #include #include #include #include #include #include #include "ctags.h" /* * ctags: create a tags file */ NODE *head; /* head of the sorted binary tree */ /* boolean "func" (see init()) */ bool _wht[256], _etk[256], _itk[256], _btk[256], _gd[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 tflag; /* -t: create tags for typedefs */ 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 *); static void usage(void); int main(int argc, char **argv) { static const 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 */ setlocale(LC_ALL, ""); aflag = uflag = NO; tflag = YES; while ((ch = getopt(argc, argv, "BFTadf:tuwvx")) != -1) switch(ch) { case 'B': searchar = '?'; break; case 'F': searchar = '/'; break; case 'T': tflag = NO; break; case 'a': aflag++; break; case 'd': dflag++; break; case 'f': outfile = optarg; break; case 't': tflag = YES; break; case 'u': uflag++; break; case 'w': wflag++; break; case 'v': vflag++; case 'x': xflag++; break; case '?': default: usage(); } argv += optind; argc -= optind; if (!argc) usage(); if (!xflag) setlocale(LC_COLLATE, "C"); init(); 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 (uflag) { FILE *oldf; regex_t *regx; if ((oldf = fopen(outfile, "r")) == NULL) err(1, "opening %s", outfile); if (unlink(outfile)) err(1, "unlinking %s", outfile); if ((outf = fopen(outfile, "w")) == NULL) err(1, "recreating %s", outfile); if ((regx = calloc(argc, sizeof(regex_t))) == NULL) err(1, "RE alloc"); for (step = 0; step < argc; step++) { (void)strcpy(lbuf, "\t"); (void)strlcat(lbuf, argv[step], LINE_MAX); (void)strlcat(lbuf, "\t", LINE_MAX); if (regcomp(regx + step, lbuf, REG_NOSPEC)) warn("RE compilation failed"); } nextline: while (fgets(lbuf, LINE_MAX, oldf)) { for (step = 0; step < argc; step++) if (regexec(regx + step, lbuf, 0, NULL, 0) == 0) goto nextline; fputs(lbuf, outf); } for (step = 0; step < argc; step++) regfree(regx + step); free(regx); fclose(oldf); fclose(outf); ++aflag; } if (!(outf = fopen(outfile, aflag ? "a" : "w"))) err(1, "%s", outfile); put_entries(head); (void)fclose(outf); if (uflag) { pid_t pid; if ((pid = fork()) == -1) err(1, "fork failed"); else if (pid == 0) { execlp("sort", "sort", "-o", outfile, outfile, NULL); err(1, "exec of sort failed"); } /* Just assume the sort went OK. The old code did not do any checks either. */ (void)wait(NULL); } } } exit(exit_val); } static void usage(void) { (void)fprintf(stderr, "usage: ctags [-BFTaduwvx] [-f tagsfile] file ...\n"); exit(1); } /* * init -- * this routine sets up the boolean pseudo-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; const unsigned char *sp; for (i = 0; i < 256; i++) { _wht[i] = _etk[i] = _itk[i] = _btk[i] = NO; _gd[i] = YES; } #define CWHITE " \f\t\n" for (sp = CWHITE; *sp; sp++) /* white space chars */ _wht[*sp] = YES; #define CTOKEN " \t\n\"'#()[]{}=-+%*/&|^~!<>;,.:?" for (sp = CTOKEN; *sp; sp++) /* token ending chars */ _etk[*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; #define CNOTGD ",;" for (sp = CNOTGD; *sp; sp++) /* invalid after-function chars */ _gd[*sp] = NO; } /* * 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)strcpy(lbuf, "%%$"); pfnote("yylex", lineno); rewind(inf); } } /* yacc */ else if (cp[1] == 'y' && !cp[2]) { /* * we search only the 3rd part of a yacc file * for C references. This may be wrong. */ toss_yysec(); (void)strcpy(lbuf, "%%$"); 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(); }