xref: /netbsd/usr.bin/error/main.c (revision bf9ec67e)
1 /*	$NetBSD: main.c,v 1.7 2002/05/26 22:41:21 wiz Exp $	*/
2 
3 /*
4  * Copyright (c) 1980, 1993
5  *	The Regents of the University of California.  All rights reserved.
6  *
7  * Redistribution and use in source and binary forms, with or without
8  * modification, are permitted provided that the following conditions
9  * are met:
10  * 1. Redistributions of source code must retain the above copyright
11  *    notice, this list of conditions and the following disclaimer.
12  * 2. Redistributions in binary form must reproduce the above copyright
13  *    notice, this list of conditions and the following disclaimer in the
14  *    documentation and/or other materials provided with the distribution.
15  * 3. All advertising materials mentioning features or use of this software
16  *    must display the following acknowledgement:
17  *	This product includes software developed by the University of
18  *	California, Berkeley and its contributors.
19  * 4. Neither the name of the University nor the names of its contributors
20  *    may be used to endorse or promote products derived from this software
21  *    without specific prior written permission.
22  *
23  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
24  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
25  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
26  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
27  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
28  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
29  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
30  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
31  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
32  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
33  * SUCH DAMAGE.
34  */
35 
36 #include <sys/cdefs.h>
37 #ifndef lint
38 __COPYRIGHT("@(#) Copyright (c) 1980, 1993\n\
39 	The Regents of the University of California.  All rights reserved.\n");
40 #endif /* not lint */
41 
42 #ifndef lint
43 #if 0
44 static char sccsid[] = "@(#)main.c	8.1 (Berkeley) 6/6/93";
45 #endif
46 __RCSID("$NetBSD: main.c,v 1.7 2002/05/26 22:41:21 wiz Exp $");
47 #endif /* not lint */
48 
49 #include <signal.h>
50 #include <unistd.h>
51 #include <stdio.h>
52 #include <ctype.h>
53 #include <stdlib.h>
54 #include <string.h>
55 #include "error.h"
56 #include "pathnames.h"
57 
58 FILE    *errorfile;     /* where error file comes from */
59 FILE    *queryfile;     /* where the query responses from the user come from*/
60 
61 int     nignored;
62 char    **names_ignored;
63 
64 int	nerrors = 0;
65 Eptr	er_head;
66 Eptr	*errors;
67 
68 int	nfiles = 0;
69 Eptr	**files;	/* array of pointers into errors*/
70 boolean *touchedfiles;  /* which files we touched */
71 int	language = INCC;
72 
73 char	*currentfilename = "????";
74 char	*processname;
75 char	im_on[] = _PATH_TTY;	/* my tty name */
76 
77 boolean	query = FALSE;		/* query the operator if touch files */
78 boolean	notouch = FALSE;	/* don't touch ANY files */
79 boolean	piflag	= FALSE;	/* this is not pi */
80 boolean	terse	= FALSE;	/* Terse output */
81 
82 char	*suffixlist = ".*";	/* initially, can touch any file */
83 
84 int	errorsort(const void *, const void *);
85 void	forkvi(int, char **);
86 int	main(int, char **);
87 void	try(char *, int, char **);
88 
89 /*
90  *	error [-I ignorename] [-n] [-q] [-t suffixlist] [-s] [-v] [infile]
91  *
92  *	-T:	terse output
93  *
94  *	-I:	the following name, `ignorename' contains a list of
95  *		function names that are not to be treated as hard errors.
96  *		Default: ~/.errorsrc
97  *
98  *	-n:	don't touch ANY files!
99  *
100  *	-q:	The user is to be queried before touching each
101  *		file; if not specified, all files with hard, non
102  *		ignorable errors are touched (assuming they can be).
103  *
104  *	-t:	touch only files ending with the list of suffices, each
105  *		suffix preceded by a dot.
106  *		eg, -t .c.y.l
107  *		will touch only files ending with .c, .y or .l
108  *
109  *	-s:	print a summary of the error's categories.
110  *
111  *	-v:	after touching all files, overlay vi(1), ex(1) or ed(1)
112  *		on top of error, entered in the first file with
113  *		an error in it, with the appropriate editor
114  *		set up to use the "next" command to get the other
115  *		files containing errors.
116  *
117  *	-p:	(obsolete: for older versions of pi without bug
118  *		fix regarding printing out the name of the main file
119  *		with an error in it)
120  *		Take the following argument and use it as the name of
121  *		the pascal source file, suffix .p
122  *
123  *	-E:	show the errors in sorted order; intended for
124  *		debugging.
125  *
126  *	-S:	show the errors in unsorted order
127  *		(as they come from the error file)
128  *
129  *	infile:	The error messages come from this file.
130  *		Default: stdin
131  */
132 int
133 main(int argc, char **argv)
134 {
135 	char	*cp;
136 	char	*ignorename = 0;
137 	int	ed_argc;
138 	char	**ed_argv;		/*return from touchfiles*/
139 	boolean	show_errors = FALSE;
140 	boolean	Show_Errors = FALSE;
141 	boolean	pr_summary = FALSE;
142 	boolean	edit_files = FALSE;
143 
144 	processname = argv[0];
145 
146 	errorfile = stdin;
147 	if (argc > 1) for(; (argc > 1) && (argv[1][0] == '-'); argc--, argv++){
148 		for (cp = argv[1] + 1; *cp; cp++) switch(*cp){
149 		default:
150 			fprintf(stderr, "%s: -%c: Unknown flag\n",
151 				processname, *cp);
152 			break;
153 
154 		case 'n':	notouch = TRUE;	break;
155 		case 'q':	query = TRUE;	break;
156 		case 'S':	Show_Errors = TRUE;	break;
157 		case 's':	pr_summary = TRUE;	break;
158 		case 'v':	edit_files = TRUE;	break;
159 		case 'T':	terse = TRUE;	break;
160 		case 't':
161 			*cp-- = 0; argv++; argc--;
162 			if (argc > 1){
163 				suffixlist = argv[1];
164 			}
165 			break;
166 		case 'I':	/*ignore file name*/
167 			*cp-- = 0; argv++; argc--;
168 			if (argc > 1)
169 				ignorename = argv[1];
170 			break;
171 		}
172 	}
173 	if (notouch)
174 		suffixlist = 0;
175 	if (argc > 1){
176 		if (argc > 3){
177 			fprintf(stderr, "%s: Only takes 0 or 1 arguments\n",
178 				processname);
179 			exit(3);
180 		}
181 		if ( (errorfile = fopen(argv[1], "r")) == NULL){
182 			fprintf(stderr, "%s: %s: No such file or directory for reading errors.\n",
183 				processname, argv[1]);
184 			exit(4);
185 		}
186 	}
187 	if ( (queryfile = fopen(im_on, "r")) == NULL){
188 		if (query){
189 			fprintf(stderr,
190 				"%s: Can't open \"%s\" to query the user.\n",
191 				processname, im_on);
192 			exit(9);
193 		}
194 	}
195 	if (signal(SIGINT, onintr) == SIG_IGN)
196 		signal(SIGINT, SIG_IGN);
197 	if (signal(SIGTERM, onintr) == SIG_IGN)
198 		signal(SIGTERM, SIG_IGN);
199 	getignored(ignorename);
200 	eaterrors(&nerrors, &errors);
201 	if (Show_Errors)
202 		printerrors(TRUE, nerrors, errors);
203 	qsort(errors, nerrors, sizeof(Eptr), errorsort);
204 	if (show_errors)
205 		printerrors(FALSE, nerrors, errors);
206 	findfiles(nerrors, errors, &nfiles, &files);
207 #define P(msg, arg) fprintf(stdout, msg, arg)
208 	if (pr_summary){
209 	    if (nunknown)
210 	      P("%d Errors are unclassifiable.\n", nunknown);
211 	    if (nignore)
212 	      P("%d Errors are classifiable, but totally discarded.\n",nignore);
213 	    if (nsyncerrors)
214 	      P("%d Errors are synchronization errors.\n", nsyncerrors);
215 	    if (nignore)
216 	      P("%d Errors are discarded because they refer to sacrosinct files.\n", ndiscard);
217 	    if (nnulled)
218 	      P("%d Errors are nulled because they refer to specific functions.\n", nnulled);
219 	    if (nnonspec)
220 	      P("%d Errors are not specific to any file.\n", nnonspec);
221 	    if (nthisfile)
222 	      P("%d Errors are specific to a given file, but not to a line.\n", nthisfile);
223 	    if (ntrue)
224 	      P("%d Errors are true errors, and can be inserted into the files.\n", ntrue);
225 	}
226 	filenames(nfiles, files);
227 	fflush(stdout);
228 	if (touchfiles(nfiles, files, &ed_argc, &ed_argv) && edit_files)
229 		forkvi(ed_argc, ed_argv);
230 	return (0);
231 }
232 
233 void
234 forkvi(int argc, char **argv)
235 {
236 	if (query){
237 		switch(inquire(terse
238 		    ? "Edit? "
239 		    : "Do you still want to edit the files you touched? ")){
240 		case Q_NO:
241 		case Q_no:
242 			return;
243 		default:
244 			break;
245 		}
246 	}
247 	/*
248 	 *	ed_agument's first argument is
249 	 *	a vi/ex compatible search argument
250 	 *	to find the first occurance of ###
251 	 */
252 	try("vi", argc, argv);
253 	try("ex", argc, argv);
254 	try("ed", argc-1, argv+1);
255 	fprintf(stdout, "Can't find any editors.\n");
256 }
257 
258 void
259 try(char *name, int argc, char **argv)
260 {
261 	argv[0] = name;
262 	wordvprint(stdout, argc, argv);
263 	fprintf(stdout, "\n");
264 	fflush(stderr);
265 	fflush(stdout);
266 	sleep(2);
267 	if (freopen(im_on, "r", stdin) == NULL)
268 		return;
269 	if (freopen(im_on, "w", stdout) == NULL)
270 		return;
271 	execvp(name, argv);
272 }
273 
274 int errorsort(const void *x1, const void *x2)
275 {
276 	Eptr	*epp1 = (Eptr *)x1, *epp2 = (Eptr *)x2;
277 	Eptr	ep1, ep2;
278 	int	order;
279 	/*
280 	 *	Sort by:
281 	 *	1)	synchronization, non specific, discarded errors first;
282 	 *	2)	nulled and true errors last
283 	 *		a)	grouped by similar file names
284 	 *			1)	grouped in ascending line number
285 	 */
286 	ep1 = *epp1; ep2 = *epp2;
287 	if (ep1 == 0 || ep2 == 0)
288 		return(0);
289 	if ( (NOTSORTABLE(ep1->error_e_class)) ^ (NOTSORTABLE(ep2->error_e_class))){
290 		return(NOTSORTABLE(ep1->error_e_class) ? -1 : 1);
291 	}
292 	if (NOTSORTABLE(ep1->error_e_class))	/* then both are */
293 		return(ep1->error_no - ep2->error_no);
294 	order = strcmp(ep1->error_text[0], ep2->error_text[0]);
295 	if (order == 0){
296 		return(ep1->error_line - ep2->error_line);
297 	}
298 	return(order);
299 }
300