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msg.c revision 1.7 
      1 /*	$NetBSD: msg.c,v 1.7 2002/01/31 19:36:55 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: msg.c,v 1.7 2002/01/31 19:36:55 tv Exp $");
     37 #endif
     38 
     39 #include <stdio.h>
     40 #include <stdarg.h>
     41 #include <string.h>
     42 
     43 #include "lint2.h"
     44 
     45 static	const	char *msgs[] = {
     46 	"%s used( %s ), but not defined",			      /* 0 */
     47 	"%s defined( %s ), but never used",			      /* 1 */
     48 	"%s declared( %s ), but never used or defined",		      /* 2 */
     49 	"%s multiply defined  \t%s  ::  %s",			      /* 3 */
     50 	"%s value used inconsistently  \t%s  ::  %s",		      /* 4 */
     51 	"%s value declared inconsistently  \t%s  ::  %s",	      /* 5 */
     52 	"%s, arg %d used inconsistently  \t%s  ::  %s",		      /* 6 */
     53 	"%s: variable # of args  \t%s  ::  %s",			      /* 7 */
     54 	"%s returns value which is always ignored",		      /* 8 */
     55 	"%s returns value which is sometimes ignored",		      /* 9 */
     56 	"%s value is used( %s ), but none returned",		      /* 10 */
     57 	"%s, arg %d declared inconsistently  \t%s :: %s",	      /* 11 */
     58 	"%s: variable # of args declared  \t%s  ::  %s",	      /* 12 */
     59 	"%s: malformed format string  \t%s",			      /* 13 */
     60 	"%s, arg %d inconsistent with format  \t%s",		      /* 14 */
     61 	"%s: too few args for format  \t%s",			      /* 15 */
     62 	"%s: too many args for format  \t%s",			      /* 16 */
     63 	"%s function value must be declared before use  \t%s  ::  %s",/* 17 */
     64 	"%s renamed multiple times  \t%s  ::  %s",		      /* 18 */
     65 };
     66 
     67 static	const	char *lbasename(const char *);
     68 
     69 void
     70 msg(int n, ...)
     71 {
     72 	va_list	ap;
     73 
     74 	va_start(ap, n);
     75 
     76 	(void)vprintf(msgs[n], ap);
     77 	(void)printf("\n");
     78 
     79 	va_end(ap);
     80 }
     81 
     82 /*
     83  * Return a pointer to the last component of a path.
     84  */
     85 static const char *
     86 lbasename(const char *path)
     87 {
     88 	const	char *cp, *cp1, *cp2;
     89 
     90 	if (Fflag)
     91 		return (path);
     92 
     93 	cp = cp1 = cp2 = path;
     94 	while (*cp != '\0') {
     95 		if (*cp++ == '/') {
     96 			cp2 = cp1;
     97 			cp1 = cp;
     98 		}
     99 	}
    100 	return (*cp1 == '\0' ? cp2 : cp1);
    101 }
    102 
    103 /*
    104  * Create a string which describes a position in a source file.
    105  */
    106 const char *
    107 mkpos(pos_t *posp)
    108 {
    109 	size_t	len;
    110 	const	char *fn;
    111 	static	char	*buf;
    112 	static	size_t	blen = 0;
    113 	int	qm, src, line;
    114 
    115 	if (Hflag && posp->p_src != posp->p_isrc) {
    116 		src = posp->p_isrc;
    117 		line = posp->p_iline;
    118 	} else {
    119 		src = posp->p_src;
    120 		line = posp->p_line;
    121 	}
    122 	qm = !Hflag && posp->p_src != posp->p_isrc;
    123 
    124 	len = strlen(fn = lbasename(fnames[src]));
    125 	len += 3 * sizeof (u_short) + 4;
    126 
    127 	if (len > blen)
    128 		buf = xrealloc(buf, blen = len);
    129 	if (line != 0) {
    130 		(void)sprintf(buf, "%s%s(%hu)",
    131 			      fn, qm ? "?" : "", line);
    132 	} else {
    133 		(void)sprintf(buf, "%s", fn);
    134 	}
    135 
    136 	return (buf);
    137 }
    138