xref: /netbsd/usr.bin/xlint/lint1/main1.c (revision bf9ec67e)
1 /*	$NetBSD: main1.c,v 1.12 2002/01/31 19:33:50 tv Exp $	*/
2 
3 /*
4  * Copyright (c) 1994, 1995 Jochen Pohl
5  * 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 Jochen Pohl for
18  *	The NetBSD Project.
19  * 4. The name of the author may not be used to endorse or promote products
20  *    derived from this software without specific prior written permission.
21  *
22  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
23  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
24  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
25  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
26  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
27  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
28  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
29  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
30  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
31  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
32  */
33 
34 #include <sys/cdefs.h>
35 #if defined(__RCSID) && !defined(lint)
36 __RCSID("$NetBSD: main1.c,v 1.12 2002/01/31 19:33:50 tv Exp $");
37 #endif
38 
39 #include <sys/types.h>
40 #include <stdio.h>
41 #include <string.h>
42 #include <stdlib.h>
43 #include <unistd.h>
44 #include <errno.h>
45 #include <limits.h>
46 
47 #include "lint1.h"
48 
49 /* set yydebug to 1*/
50 int	yflag;
51 
52 /*
53  * Print warnings if an assignment of an integertype to another integertype
54  * causes an implizit narrowing conversion. If aflag is 1, these warnings
55  * are printed only if the source type is at least as wide as long. If aflag
56  * is greater than 1, they are always printed.
57  */
58 int	aflag;
59 
60 /* Print a warning if a break statement cannot be reached. */
61 int	bflag;
62 
63 /* Print warnings for pointer casts. */
64 int	cflag;
65 
66 /* Print various debug information. */
67 int	dflag;
68 
69 /* Perform stricter checking of enum types and operations on enum types. */
70 int	eflag;
71 
72 /* Print complete pathnames, not only the basename. */
73 int	Fflag;
74 
75 /* Enable some extensions of gcc */
76 int	gflag;
77 
78 /* Treat warnings as errors */
79 int	wflag;
80 
81 /*
82  * Apply a number of heuristic tests to attempt to intuit bugs, improve
83  * style, and reduce waste.
84  */
85 int	hflag;
86 
87 /* Attempt to check portability to other dialects of C. */
88 int	pflag;
89 
90 /*
91  * In case of redeclarations/redefinitions print the location of the
92  * previous declaration/definition.
93  */
94 int	rflag;
95 
96 /* Strict ANSI C mode. */
97 int	sflag;
98 
99 /* Traditional C mode. */
100 int	tflag;
101 
102 /*
103  * Complain about functions and external variables used and not defined,
104  * or defined and not used.
105  */
106 int	uflag = 1;
107 
108 /* Complain about unused function arguments. */
109 int	vflag = 1;
110 
111 /* Complain about structures which are never defined. */
112 int	zflag = 1;
113 
114 err_set	msgset;
115 
116 static	void	usage(void);
117 
118 int main(int, char *[]);
119 
120 int
121 main(int argc, char *argv[])
122 {
123 	int	c;
124 	char	*ptr;
125 
126 	setprogname(argv[0]);
127 
128 	ERR_ZERO(&msgset);
129 	while ((c = getopt(argc, argv, "abcdeghmprstuvwyzFX:")) != -1) {
130 		switch (c) {
131 		case 'a':	aflag++;	break;
132 		case 'b':	bflag = 1;	break;
133 		case 'c':	cflag = 1;	break;
134 		case 'd':	dflag = 1;	break;
135 		case 'e':	eflag = 1;	break;
136 		case 'F':	Fflag = 1;	break;
137 		case 'g':	gflag = 1;	break;
138 		case 'h':	hflag = 1;	break;
139 		case 'p':	pflag = 1;	break;
140 		case 'r':	rflag = 1;	break;
141 		case 's':	sflag = 1;	break;
142 		case 't':	tflag = 1;	break;
143 		case 'u':	uflag = 0;	break;
144 		case 'w':	wflag = 1;	break;
145 		case 'v':	vflag = 0;	break;
146 		case 'y':	yflag = 1;	break;
147 		case 'z':	zflag = 0;	break;
148 
149 		case 'm':
150 			msglist();
151 			return(0);
152 
153 		case 'X':
154 			for (ptr = strtok(optarg, ","); ptr;
155 			    ptr = strtok(NULL, ",")) {
156 				char *eptr;
157 				long msg = strtol(ptr, &eptr, 0);
158 				if ((msg == LONG_MIN || msg == LONG_MAX) &&
159 				    errno == ERANGE)
160 				    err(1, "invalid error message id '%s'",
161 					ptr);
162 				if (*eptr || ptr == eptr || msg < 0 ||
163 				    msg >= ERR_SETSIZE)
164 					errx(1, "invalid error message id '%s'",
165 					    ptr);
166 				ERR_SET(msg, &msgset);
167 			}
168 			break;
169 		case '?':
170 		default:
171 			usage();
172 			break;
173 		}
174 	}
175 	argc -= optind;
176 	argv += optind;
177 
178 	if (argc != 2)
179 		usage();
180 
181 	/* open the input file */
182 	if ((yyin = fopen(argv[0], "r")) == NULL)
183 		err(1, "cannot open '%s'", argv[0]);
184 
185 	/* initialize output */
186 	outopen(argv[1]);
187 
188 	if (yflag)
189 		yydebug = 1;
190 
191 	initmem();
192 	initdecl();
193 	initscan();
194 	initmtab();
195 
196 	yyparse();
197 
198 	/* Following warnings cannot be suppressed by LINTED */
199 	nowarn = 0;
200 
201 	chkglsyms();
202 
203 	outclose();
204 
205 	return (nerr != 0);
206 }
207 
208 static void
209 usage(void)
210 {
211 	(void)fprintf(stderr,
212 	    "Usage: %s [-abcdeghmprstuvwyzF] [-X <id>[,<id>]... src dest\n",
213 	    getprogname());
214 	exit(1);
215 }
216 
217 void
218 norecover(void)
219 {
220 	/* cannot recover from previous errors */
221 	error(224);
222 	exit(1);
223 }
224