ctags.c revision 87215
11590Srgrimes/* 227097Scharnier * Copyright (c) 1987, 1993, 1994, 1995 31590Srgrimes * The Regents of the University of California. All rights reserved. 41590Srgrimes * 51590Srgrimes * Redistribution and use in source and binary forms, with or without 61590Srgrimes * modification, are permitted provided that the following conditions 71590Srgrimes * are met: 81590Srgrimes * 1. Redistributions of source code must retain the above copyright 91590Srgrimes * notice, this list of conditions and the following disclaimer. 101590Srgrimes * 2. Redistributions in binary form must reproduce the above copyright 111590Srgrimes * notice, this list of conditions and the following disclaimer in the 121590Srgrimes * documentation and/or other materials provided with the distribution. 131590Srgrimes * 3. All advertising materials mentioning features or use of this software 141590Srgrimes * must display the following acknowledgement: 151590Srgrimes * This product includes software developed by the University of 161590Srgrimes * California, Berkeley and its contributors. 171590Srgrimes * 4. Neither the name of the University nor the names of its contributors 181590Srgrimes * may be used to endorse or promote products derived from this software 191590Srgrimes * without specific prior written permission. 201590Srgrimes * 211590Srgrimes * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 221590Srgrimes * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 231590Srgrimes * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 241590Srgrimes * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 251590Srgrimes * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 261590Srgrimes * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 271590Srgrimes * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 281590Srgrimes * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 291590Srgrimes * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 301590Srgrimes * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 311590Srgrimes * SUCH DAMAGE. 321590Srgrimes */ 331590Srgrimes 341590Srgrimes#ifndef lint 3541568Sarchiestatic const char copyright[] = 3627097Scharnier"@(#) Copyright (c) 1987, 1993, 1994, 1995\n\ 371590Srgrimes The Regents of the University of California. All rights reserved.\n"; 381590Srgrimes#endif /* not lint */ 391590Srgrimes 401590Srgrimes#ifndef lint 4181782Smikeh#if 0 4241568Sarchiestatic const char sccsid[] = "@(#)ctags.c 8.4 (Berkeley) 2/7/95"; 4381782Smikeh#endif 4481782Smikehstatic const char rcsid[] = 4581782Smikeh "$FreeBSD: head/usr.bin/ctags/ctags.c 87215 2001-12-02 13:36:14Z markm $"; 461590Srgrimes#endif /* not lint */ 471590Srgrimes 481590Srgrimes#include <err.h> 491590Srgrimes#include <limits.h> 501590Srgrimes#include <stdio.h> 511590Srgrimes#include <string.h> 521590Srgrimes#include <stdlib.h> 531590Srgrimes#include <unistd.h> 541590Srgrimes 551590Srgrimes#include "ctags.h" 561590Srgrimes 571590Srgrimes/* 581590Srgrimes * ctags: create a tags file 591590Srgrimes */ 601590Srgrimes 611590SrgrimesNODE *head; /* head of the sorted binary tree */ 621590Srgrimes 631590Srgrimes /* boolean "func" (see init()) */ 641590Srgrimesbool _wht[256], _etk[256], _itk[256], _btk[256], _gd[256]; 651590Srgrimes 661590SrgrimesFILE *inf; /* ioptr for current input file */ 671590SrgrimesFILE *outf; /* ioptr for tags file */ 681590Srgrimes 691590Srgrimeslong lineftell; /* ftell after getc( inf ) == '\n' */ 701590Srgrimes 711590Srgrimesint lineno; /* line number of current line */ 721590Srgrimesint dflag; /* -d: non-macro defines */ 731590Srgrimesint tflag; /* -t: create tags for typedefs */ 741590Srgrimesint vflag; /* -v: vgrind style index output */ 751590Srgrimesint wflag; /* -w: suppress warnings */ 761590Srgrimesint xflag; /* -x: cxref style output */ 771590Srgrimes 781590Srgrimeschar *curfile; /* current input file name */ 791590Srgrimeschar searchar = '/'; /* use /.../ searches by default */ 801590Srgrimeschar lbuf[LINE_MAX]; 811590Srgrimes 821590Srgrimesvoid init __P((void)); 831590Srgrimesvoid find_entries __P((char *)); 8427097Scharnierstatic void usage __P((void)); 851590Srgrimes 861590Srgrimesint 871590Srgrimesmain(argc, argv) 881590Srgrimes int argc; 891590Srgrimes char **argv; 901590Srgrimes{ 9187215Smarkm static const char *outfile = "tags"; /* output file */ 921590Srgrimes int aflag; /* -a: append to tags */ 931590Srgrimes int uflag; /* -u: update tags */ 941590Srgrimes int exit_val; /* exit value */ 951590Srgrimes int step; /* step through args */ 961590Srgrimes int ch; /* getopts char */ 971590Srgrimes char cmd[100]; /* too ugly to explain */ 981590Srgrimes 991590Srgrimes aflag = uflag = NO; 10024360Simp while ((ch = getopt(argc, argv, "BFadf:tuwvx")) != -1) 1011590Srgrimes switch(ch) { 1021590Srgrimes case 'B': 1031590Srgrimes searchar = '?'; 1041590Srgrimes break; 1051590Srgrimes case 'F': 1061590Srgrimes searchar = '/'; 1071590Srgrimes break; 1081590Srgrimes case 'a': 1091590Srgrimes aflag++; 1101590Srgrimes break; 1111590Srgrimes case 'd': 1121590Srgrimes dflag++; 1131590Srgrimes break; 1141590Srgrimes case 'f': 1151590Srgrimes outfile = optarg; 1161590Srgrimes break; 1171590Srgrimes case 't': 1181590Srgrimes tflag++; 1191590Srgrimes break; 1201590Srgrimes case 'u': 1211590Srgrimes uflag++; 1221590Srgrimes break; 1231590Srgrimes case 'w': 1241590Srgrimes wflag++; 1251590Srgrimes break; 1261590Srgrimes case 'v': 1271590Srgrimes vflag++; 1281590Srgrimes case 'x': 1291590Srgrimes xflag++; 1301590Srgrimes break; 1311590Srgrimes case '?': 1321590Srgrimes default: 13327097Scharnier usage(); 1341590Srgrimes } 1351590Srgrimes argv += optind; 1361590Srgrimes argc -= optind; 13727097Scharnier if (!argc) 13827097Scharnier usage(); 1391590Srgrimes 1401590Srgrimes init(); 1411590Srgrimes 1421590Srgrimes for (exit_val = step = 0; step < argc; ++step) 1431590Srgrimes if (!(inf = fopen(argv[step], "r"))) { 1441590Srgrimes warn("%s", argv[step]); 1451590Srgrimes exit_val = 1; 1461590Srgrimes } 1471590Srgrimes else { 1481590Srgrimes curfile = argv[step]; 1491590Srgrimes find_entries(argv[step]); 1501590Srgrimes (void)fclose(inf); 1511590Srgrimes } 1521590Srgrimes 15348465Sbillf if (head) { 1541590Srgrimes if (xflag) 1551590Srgrimes put_entries(head); 1561590Srgrimes else { 1571590Srgrimes if (uflag) { 1581590Srgrimes for (step = 0; step < argc; step++) { 1591590Srgrimes (void)sprintf(cmd, 1601590Srgrimes "mv %s OTAGS; fgrep -v '\t%s\t' OTAGS >%s; rm OTAGS", 1611590Srgrimes outfile, argv[step], 1621590Srgrimes outfile); 1631590Srgrimes system(cmd); 1641590Srgrimes } 1651590Srgrimes ++aflag; 1661590Srgrimes } 1671590Srgrimes if (!(outf = fopen(outfile, aflag ? "a" : "w"))) 1681590Srgrimes err(exit_val, "%s", outfile); 1691590Srgrimes put_entries(head); 1701590Srgrimes (void)fclose(outf); 1711590Srgrimes if (uflag) { 1721590Srgrimes (void)sprintf(cmd, "sort -o %s %s", 1731590Srgrimes outfile, outfile); 1741590Srgrimes system(cmd); 1751590Srgrimes } 1761590Srgrimes } 17748465Sbillf } 1781590Srgrimes exit(exit_val); 1791590Srgrimes} 1801590Srgrimes 18127097Scharnierstatic void 18227097Scharnierusage() 18327097Scharnier{ 18427097Scharnier (void)fprintf(stderr, "usage: ctags [-BFadtuwvx] [-f tagsfile] file ...\n"); 18527097Scharnier exit(1); 18627097Scharnier} 18727097Scharnier 1881590Srgrimes/* 1891590Srgrimes * init -- 1901590Srgrimes * this routine sets up the boolean psuedo-functions which work by 1911590Srgrimes * setting boolean flags dependent upon the corresponding character. 1921590Srgrimes * Every char which is NOT in that string is false with respect to 1931590Srgrimes * the pseudo-function. Therefore, all of the array "_wht" is NO 1941590Srgrimes * by default and then the elements subscripted by the chars in 1951590Srgrimes * CWHITE are set to YES. Thus, "_wht" of a char is YES if it is in 1961590Srgrimes * the string CWHITE, else NO. 1971590Srgrimes */ 1981590Srgrimesvoid 1991590Srgrimesinit() 2001590Srgrimes{ 2011590Srgrimes int i; 20287215Smarkm const unsigned char *sp; 2031590Srgrimes 2041590Srgrimes for (i = 0; i < 256; i++) { 2051590Srgrimes _wht[i] = _etk[i] = _itk[i] = _btk[i] = NO; 2061590Srgrimes _gd[i] = YES; 2071590Srgrimes } 2081590Srgrimes#define CWHITE " \f\t\n" 2091590Srgrimes for (sp = CWHITE; *sp; sp++) /* white space chars */ 2101590Srgrimes _wht[*sp] = YES; 2111590Srgrimes#define CTOKEN " \t\n\"'#()[]{}=-+%*/&|^~!<>;,.:?" 2121590Srgrimes for (sp = CTOKEN; *sp; sp++) /* token ending chars */ 2131590Srgrimes _etk[*sp] = YES; 2141590Srgrimes#define CINTOK "ABCDEFGHIJKLMNOPQRSTUVWXYZ_abcdefghijklmnopqrstuvwxyz0123456789" 2151590Srgrimes for (sp = CINTOK; *sp; sp++) /* valid in-token chars */ 2161590Srgrimes _itk[*sp] = YES; 2171590Srgrimes#define CBEGIN "ABCDEFGHIJKLMNOPQRSTUVWXYZ_abcdefghijklmnopqrstuvwxyz" 2181590Srgrimes for (sp = CBEGIN; *sp; sp++) /* token starting chars */ 2191590Srgrimes _btk[*sp] = YES; 2201590Srgrimes#define CNOTGD ",;" 2211590Srgrimes for (sp = CNOTGD; *sp; sp++) /* invalid after-function chars */ 2221590Srgrimes _gd[*sp] = NO; 2231590Srgrimes} 2241590Srgrimes 2251590Srgrimes/* 2261590Srgrimes * find_entries -- 2271590Srgrimes * this routine opens the specified file and calls the function 2281590Srgrimes * which searches the file. 2291590Srgrimes */ 2301590Srgrimesvoid 2311590Srgrimesfind_entries(file) 2321590Srgrimes char *file; 2331590Srgrimes{ 2341590Srgrimes char *cp; 2351590Srgrimes 2361590Srgrimes lineno = 0; /* should be 1 ?? KB */ 23732069Salex if ((cp = strrchr(file, '.'))) { 2381590Srgrimes if (cp[1] == 'l' && !cp[2]) { 2391590Srgrimes int c; 2401590Srgrimes 2411590Srgrimes for (;;) { 2421590Srgrimes if (GETC(==, EOF)) 2431590Srgrimes return; 2441590Srgrimes if (!iswhite(c)) { 2451590Srgrimes rewind(inf); 2461590Srgrimes break; 2471590Srgrimes } 2481590Srgrimes } 2491590Srgrimes#define LISPCHR ";([" 2501590Srgrimes/* lisp */ if (strchr(LISPCHR, c)) { 2511590Srgrimes l_entries(); 2521590Srgrimes return; 2531590Srgrimes } 2541590Srgrimes/* lex */ else { 2551590Srgrimes /* 2561590Srgrimes * we search all 3 parts of a lex file 2571590Srgrimes * for C references. This may be wrong. 2581590Srgrimes */ 2591590Srgrimes toss_yysec(); 2601590Srgrimes (void)strcpy(lbuf, "%%$"); 2611590Srgrimes pfnote("yylex", lineno); 2621590Srgrimes rewind(inf); 2631590Srgrimes } 2641590Srgrimes } 2651590Srgrimes/* yacc */ else if (cp[1] == 'y' && !cp[2]) { 2661590Srgrimes /* 2671590Srgrimes * we search only the 3rd part of a yacc file 2681590Srgrimes * for C references. This may be wrong. 2691590Srgrimes */ 2701590Srgrimes toss_yysec(); 2711590Srgrimes (void)strcpy(lbuf, "%%$"); 2721590Srgrimes pfnote("yyparse", lineno); 2731590Srgrimes y_entries(); 2741590Srgrimes } 2751590Srgrimes/* fortran */ else if ((cp[1] != 'c' && cp[1] != 'h') && !cp[2]) { 2761590Srgrimes if (PF_funcs()) 2771590Srgrimes return; 2781590Srgrimes rewind(inf); 2791590Srgrimes } 2801590Srgrimes } 2811590Srgrimes/* C */ c_entries(); 2821590Srgrimes} 283