/* * Copyright (c) 1987, 1993, 1994 * 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. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This product includes software developed by the University of * California, Berkeley and its contributors. * 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\n\ The Regents of the University of California. All rights reserved.\n"; #endif /* not lint */ #if defined(LIBC_SCCS) && !defined(lint) static const char rcsid[] = "$Id: ctags.c,v 1.3 1997/07/10 06:43:40 charnier Exp $"; #endif /* LIBC_SCCS and not lint */ #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 */ #ifdef GTAGS int eflag; /* -e: '{' at 0 column force function end */ #endif 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 */ #ifdef GTAGS int Dflag; /* -D: allow duplicate entrys */ int rflag; /* -r: function reference */ #endif #ifdef YACC int yaccfile; /* yacc file */ #endif char *curfile; /* current input file name */ char searchar = '/'; /* use /.../ searches by default */ char lbuf[LINE_MAX]; void init __P((void)); void find_entries __P((char *)); void main __P((int, char **)); static void usage __P((void)); void main(argc, argv) 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 */ char cmd[100]; /* too ugly to explain */ extern char *optarg; extern int optind; aflag = uflag = NO; #ifdef GTAGS while ((ch = getopt(argc, argv, "BDFadef:rtuwvxy")) != -1) #else while ((ch = getopt(argc, argv, "BFadf:tuwvx")) != -1) #endif switch(ch) { case 'B': searchar = '?'; break; #ifdef GTAGS case 'D': Dflag++; break; #endif case 'F': searchar = '/'; break; case 'a': aflag++; break; case 'd': dflag++; break; #ifdef GTAGS case 'e': eflag++; break; #endif case 'f': outfile = optarg; break; #ifdef GTAGS case 'r': rflag++; break; #endif case 't': tflag++; 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(); #ifdef GTAGS if (rflag) gtagopen(); #endif init(); for (exit_val = step = 0; step < argc; ++step) if (!(inf = fopen(argv[step], "r"))) { warnx("%s cannot open", 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) { for (step = 0; step < argc; step++) { (void)sprintf(cmd, "mv %s OTAGS; fgrep -v '\t%s\t' OTAGS >%s; rm OTAGS", outfile, argv[step], outfile); system(cmd); } ++aflag; } if (!(outf = fopen(outfile, aflag ? "a" : "w"))) { warnx("%s cannot open", outfile); exit(exit_val); } put_entries(head); (void)fclose(outf); if (uflag) { (void)sprintf(cmd, "sort -o %s %s", outfile, outfile); system(cmd); } } #ifdef GTAGS if (rflag) gtagclose(); #endif exit(exit_val); } static void usage() { (void)fprintf(stderr, #ifdef GTAGS "usage: gctags [-BDFadrtuwvx] [-f tagsfile] file ...\n"); #else "usage: gctags [-BFadtuwvx] [-f tagsfile] file ...\n"); #endif exit(1); } /* * 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() { int i; 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 = (unsigned char *)CWHITE; *sp; sp++) /* white space chars */ _wht[*sp] = YES; #define CTOKEN " \t\n\"'#()[]{}=-+%*/&|^~!<>;,.:?" for (sp = (unsigned char *)CTOKEN; *sp; sp++) /* token ending chars */ _etk[*sp] = YES; #define CINTOK "ABCDEFGHIJKLMNOPQRSTUVWXYZ_abcdefghijklmnopqrstuvwxyz0123456789" for (sp = (unsigned char *)CINTOK; *sp; sp++) /* valid in-token chars */ _itk[*sp] = YES; #define CBEGIN "ABCDEFGHIJKLMNOPQRSTUVWXYZ_abcdefghijklmnopqrstuvwxyz" for (sp = (unsigned char *)CBEGIN; *sp; sp++) /* token starting chars */ _btk[*sp] = YES; #define CNOTGD ",;" for (sp = (unsigned char *)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(file) char *file; { char *cp; lineno = 0; /* should be 1 ?? KB */ if ((cp = strrchr(file, '.')) != NULL) { if (cp[1] == 'l' && !cp[2]) { int c; #ifdef GTAGS if (rflag) fprintf(stderr, "-r option is ignored in lisp file (Warning only)\n"); #endif 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]) { #ifdef YACC /* * we search all part of a yacc file for C references. * but ignore yacc rule tags. */ yaccfile = YES; c_entries(); return; #endif /* * 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(); } #ifdef GTAGS /* assembler */ else if ((cp[1] == 's' || cp[1] == 'S') && !cp[2]) { asm_entries(); return; } #endif /* fortran */ else if ((cp[1] != 'c' && cp[1] != 'h') && !cp[2]) { #ifdef GTAGS if (rflag) fprintf(stderr, "-r option is ignored in fortran file (Warning only)\n"); #endif if (PF_funcs()) return; rewind(inf); } } #ifdef YACC yaccfile = NO; #endif /* C */ c_entries(); } #ifdef GTAGS #include DB *db; void gtagopen() { BTREEINFO info; char *env; char dbname[200]; strcpy(dbname, "."); if ((env = getenv("GTAGDBPATH"))) { strcpy(dbname, env); } strcat(dbname, "/GTAGS"); info.flags = 0; info.cachesize = 500000; info.maxkeypage = 0; info.minkeypage = 0; info.psize = 0; info.compare = 0; info.prefix = 0; info.lorder = 0; #define O_RDONLY 0x0000 /* open for reading only */ db = dbopen(dbname, O_RDONLY, 0, DB_BTREE, &info); if (db == 0) errx(1, "GTAGS file needed"); } int isdefined(skey) char *skey; { DBT dat, key; int status; key.data = skey; key.size = strlen(skey)+1; status = (*db->get)(db, &key, &dat, 0); switch (status) { case RET_SUCCESS: return(1); /* exist */ case RET_ERROR: errx(1, "db->get failed"); case RET_SPECIAL: /* not exist */ break; } return 0; } void gtagclose() { if (db->close(db)) errx(1, "GTAGS cannot close.(dbclose)"); } #endif