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msg.c revision 1.1 
      1 /*
      2  * Copyright (c) 1994, 1995 Jochen Pohl
      3  * All Rights Reserved.
      4  *
      5  * Redistribution and use in source and binary forms, with or without
      6  * modification, are permitted provided that the following conditions
      7  * are met:
      8  * 1. Redistributions of source code must retain the above copyright
      9  *    notice, this list of conditions and the following disclaimer.
     10  * 2. Redistributions in binary form must reproduce the above copyright
     11  *    notice, this list of conditions and the following disclaimer in the
     12  *    documentation and/or other materials provided with the distribution.
     13  * 3. All advertising materials mentioning features or use of this software
     14  *    must display the following acknowledgement:
     15  *      This product includes software developed by Jochen Pohl for
     16  *	The NetBSD Project.
     17  * 4. The name of the author may not be used to endorse or promote products
     18  *    derived from this software without specific prior written permission.
     19  *
     20  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
     21  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     22  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     23  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
     24  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
     25  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     26  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     27  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     28  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
     29  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     30  *
     31  *	$Id: msg.c,v 1.1 1995/07/03 20:56:38 cgd Exp $
     32  */
     33 
     34 #ifndef lint
     35 static char rcsid[] = "$Id: msg.c,v 1.1 1995/07/03 20:56:38 cgd Exp $";
     36 #endif
     37 
     38 #include <string.h>
     39 
     40 #include <stdio.h>
     41 #ifdef __STDC__
     42 #include <stdarg.h>
     43 #else
     44 #include <varargs.h>
     45 #endif
     46 
     47 #include "lint2.h"
     48 
     49 
     50 static	const	char *msgs[] = {
     51 	"%s used( %s ), but not defined",			      /* 0 */
     52 	"%s defined( %s ), but never used",			      /* 1 */
     53 	"%s declared( %s ), but never used or defined",		      /* 2 */
     54 	"%s multiply defined  \t%s  ::  %s",			      /* 3 */
     55 	"%s value used inconsistently  \t%s  ::  %s",		      /* 4 */
     56 	"%s value declared inconsistently  \t%s  ::  %s",	      /* 5 */
     57 	"%s, arg %d used inconsistently  \t%s  ::  %s",		      /* 6 */
     58 	"%s: variable # of args  \t%s  ::  %s",			      /* 7 */
     59 	"%s returns value which is always ignored",		      /* 8 */
     60 	"%s returns value which is sometimes ignored",		      /* 9 */
     61 	"%s value is used( %s ), but none returned",		      /* 10 */
     62 	"%s, arg %d declared inconsistently  \t%s :: %s",	      /* 11 */
     63 	"%s: variable # of args declared  \t%s  ::  %s",	      /* 12 */
     64 	"%s: malformed format string  \t%s",			      /* 13 */
     65 	"%s, arg %d inconsistent with format  \t%s",		      /* 14 */
     66 	"%s: too few args for format  \t%s",			      /* 15 */
     67 	"%s: too many args for format  \t%s",			      /* 16 */
     68 	"%s function value must be declared before use  \t%s  ::  %s",/* 17 */
     69 };
     70 
     71 static	const	char *basename __P((const char *));
     72 
     73 #ifdef __STDC__
     74 void
     75 msg(int n, ...)
     76 {
     77 #else
     78 void
     79 msg(va_alist)
     80 	va_dcl
     81 	int	n;
     82 {
     83 #endif
     84 	va_list	ap;
     85 
     86 #ifdef __STDC__
     87 	va_start(ap, n);
     88 #else
     89 	va_start(ap);
     90 	n = va_arg(ap, int);
     91 #endif
     92 
     93 	(void)vprintf(msgs[n], ap);
     94 	(void)printf("\n");
     95 
     96 	va_end(ap);
     97 }
     98 
     99 /*
    100  * Return a pointer to the last component of a path.
    101  */
    102 static const char *
    103 basename(path)
    104 	const	char *path;
    105 {
    106 	const	char *cp, *cp1, *cp2;
    107 
    108 	if (Fflag)
    109 		return (path);
    110 
    111 	cp = cp1 = cp2 = path;
    112 	while (*cp != '\0') {
    113 		if (*cp++ == '/') {
    114 			cp2 = cp1;
    115 			cp1 = cp;
    116 		}
    117 	}
    118 	return (*cp1 == '\0' ? cp2 : cp1);
    119 }
    120 
    121 /*
    122  * Create a string which describes a position in a source file.
    123  */
    124 const char *
    125 mkpos(posp)
    126 	pos_t	*posp;
    127 {
    128 	size_t	len;
    129 	const	char *fn;
    130 	static	char	*buf;
    131 	static	size_t	blen = 0;
    132 	int	qm, src, line;
    133 
    134 	if (Hflag && posp->p_src != posp->p_isrc) {
    135 		src = posp->p_isrc;
    136 		line = posp->p_iline;
    137 	} else {
    138 		src = posp->p_src;
    139 		line = posp->p_line;
    140 	}
    141 	qm = !Hflag && posp->p_src != posp->p_isrc;
    142 
    143 	len = strlen(fn = basename(fnames[src]));
    144 	len += 3 * sizeof (u_short) + 4;
    145 
    146 	if (len > blen)
    147 		buf = xrealloc(buf, blen = len);
    148 	if (line != 0) {
    149 		(void)sprintf(buf, "%s%s(%hu)",
    150 			      fn, qm ? "?" : "", line);
    151 	} else {
    152 		(void)sprintf(buf, "%s", fn);
    153 	}
    154 
    155 	return (buf);
    156 }
    157 
    158