xref: /netbsd/usr.bin/xlint/lint1/main1.c (revision c4a72b64)
1 /*	$NetBSD: main1.c,v 1.13 2002/10/21 21:14:53 christos 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 1.13 2002/10/21 21:14:53 christos 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 /* Enable C9X extensions */
103 int	Sflag;
104 /*
105  * Complain about functions and external variables used and not defined,
106  * or defined and not used.
107  */
108 int	uflag = 1;
109 
110 /* Complain about unused function arguments. */
111 int	vflag = 1;
112 
113 /* Complain about structures which are never defined. */
114 int	zflag = 1;
115 
116 err_set	msgset;
117 
118 static	void	usage(void);
119 
120 int main(int, char *[]);
121 
122 int
123 main(int argc, char *argv[])
124 {
125 	int	c;
126 	char	*ptr;
127 
128 	setprogname(argv[0]);
129 
130 	ERR_ZERO(&msgset);
131 	while ((c = getopt(argc, argv, "abcdeghmprstuvwyzFSX:")) != -1) {
132 		switch (c) {
133 		case 'a':	aflag++;	break;
134 		case 'b':	bflag = 1;	break;
135 		case 'c':	cflag = 1;	break;
136 		case 'd':	dflag = 1;	break;
137 		case 'e':	eflag = 1;	break;
138 		case 'F':	Fflag = 1;	break;
139 		case 'g':	gflag = 1;	break;
140 		case 'h':	hflag = 1;	break;
141 		case 'p':	pflag = 1;	break;
142 		case 'r':	rflag = 1;	break;
143 		case 's':	sflag = 1;	break;
144 		case 'S':	Sflag = 1;	break;
145 		case 't':	tflag = 1;	break;
146 		case 'u':	uflag = 0;	break;
147 		case 'w':	wflag = 1;	break;
148 		case 'v':	vflag = 0;	break;
149 		case 'y':	yflag = 1;	break;
150 		case 'z':	zflag = 0;	break;
151 
152 		case 'm':
153 			msglist();
154 			return(0);
155 
156 		case 'X':
157 			for (ptr = strtok(optarg, ","); ptr;
158 			    ptr = strtok(NULL, ",")) {
159 				char *eptr;
160 				long msg = strtol(ptr, &eptr, 0);
161 				if ((msg == LONG_MIN || msg == LONG_MAX) &&
162 				    errno == ERANGE)
163 				    err(1, "invalid error message id '%s'",
164 					ptr);
165 				if (*eptr || ptr == eptr || msg < 0 ||
166 				    msg >= ERR_SETSIZE)
167 					errx(1, "invalid error message id '%s'",
168 					    ptr);
169 				ERR_SET(msg, &msgset);
170 			}
171 			break;
172 		case '?':
173 		default:
174 			usage();
175 			break;
176 		}
177 	}
178 	argc -= optind;
179 	argv += optind;
180 
181 	if (argc != 2)
182 		usage();
183 
184 	/* open the input file */
185 	if ((yyin = fopen(argv[0], "r")) == NULL)
186 		err(1, "cannot open '%s'", argv[0]);
187 
188 	/* initialize output */
189 	outopen(argv[1]);
190 
191 	if (yflag)
192 		yydebug = 1;
193 
194 	initmem();
195 	initdecl();
196 	initscan();
197 	initmtab();
198 
199 	yyparse();
200 
201 	/* Following warnings cannot be suppressed by LINTED */
202 	nowarn = 0;
203 
204 	chkglsyms();
205 
206 	outclose();
207 
208 	return (nerr != 0);
209 }
210 
211 static void
212 usage(void)
213 {
214 	(void)fprintf(stderr,
215 	    "Usage: %s [-abcdeghmprstuvwyzFS] [-X <id>[,<id>]... src dest\n",
216 	    getprogname());
217 	exit(1);
218 }
219 
220 void
221 norecover(void)
222 {
223 	/* cannot recover from previous errors */
224 	error(224);
225 	exit(1);
226 }
227