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msg.c revision 1.14 
      1 /*	$NetBSD: msg.c,v 1.14 2021/01/16 02:40:02 rillig 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 #if HAVE_NBTOOL_CONFIG_H
     35 #include "nbtool_config.h"
     36 #endif
     37 
     38 #include <sys/cdefs.h>
     39 #if defined(__RCSID) && !defined(lint)
     40 __RCSID("$NetBSD: msg.c,v 1.14 2021/01/16 02:40:02 rillig Exp $");
     41 #endif
     42 
     43 #include <stdarg.h>
     44 #include <stdio.h>
     45 #include <string.h>
     46 
     47 #include "lint2.h"
     48 
     49 static	const	char *msgs[] = {
     50 	"%s used( %s ), but not defined",			      /* 0 */
     51 	"%s defined( %s ), but never used",			      /* 1 */
     52 	"%s declared( %s ), but never used or defined",		      /* 2 */
     53 	"%s multiply defined  \t%s  ::  %s",			      /* 3 */
     54 	"%s value used inconsistently  \t%s  ::  %s",		      /* 4 */
     55 	"%s value declared inconsistently (%s != %s) \t%s  ::  %s",   /* 5 */
     56 	"%s, arg %d used inconsistently  \t%s[%s]  ::  %s[%s]",	      /* 6 */
     57 	"%s: variable # of args  \t%s  ::  %s",			      /* 7 */
     58 	"%s returns value which is always ignored",		      /* 8 */
     59 	"%s returns value which is sometimes ignored",		      /* 9 */
     60 	"%s value is used( %s ), but none returned",		      /* 10 */
     61 	"%s, arg %d declared inconsistently (%s != %s)\t%s :: %s",    /* 11 */
     62 	"%s: variable # of args declared  \t%s  ::  %s",	      /* 12 */
     63 	"%s: malformed format string  \t%s",			      /* 13 */
     64 	"%s, arg %d inconsistent with format  \t%s",		      /* 14 */
     65 	"%s: too few args for format  \t%s",			      /* 15 */
     66 	"%s: too many args for format  \t%s",			      /* 16 */
     67 	"%s function value must be declared before use  \t%s  ::  %s",/* 17 */
     68 	"%s renamed multiple times  \t%s  ::  %s",		      /* 18 */
     69 };
     70 
     71 static	const	char *lbasename(const char *);
     72 
     73 void
     74 msg(int n, ...)
     75 {
     76 	va_list	ap;
     77 
     78 	va_start(ap, n);
     79 
     80 	(void)vprintf(msgs[n], ap);
     81 	(void)printf("\n");
     82 
     83 	va_end(ap);
     84 }
     85 
     86 /*
     87  * Return a pointer to the last component of a path.
     88  */
     89 static const char *
     90 lbasename(const char *path)
     91 {
     92 	const	char *cp, *cp1, *cp2;
     93 
     94 	if (Fflag)
     95 		return path;
     96 
     97 	cp = cp1 = cp2 = path;
     98 	while (*cp != '\0') {
     99 		if (*cp++ == '/') {
    100 			cp2 = cp1;
    101 			cp1 = cp;
    102 		}
    103 	}
    104 	return *cp1 == '\0' ? cp2 : cp1;
    105 }
    106 
    107 /*
    108  * Create a string which describes a position in a source file.
    109  */
    110 const char *
    111 mkpos(pos_t *posp)
    112 {
    113 	size_t	len;
    114 	const	char *fn;
    115 	static	char	*buf;
    116 	static	size_t	blen = 0;
    117 	bool	qm;
    118 	int	src, line;
    119 
    120 	if (Hflag && posp->p_src != posp->p_isrc) {
    121 		src = posp->p_isrc;
    122 		line = posp->p_iline;
    123 	} else {
    124 		src = posp->p_src;
    125 		line = posp->p_line;
    126 	}
    127 	qm = !Hflag && posp->p_src != posp->p_isrc;
    128 
    129 	len = strlen(fn = lbasename(fnames[src]));
    130 	len += 3 * sizeof (u_short) + 4;
    131 
    132 	if (len > blen)
    133 		buf = xrealloc(buf, blen = len);
    134 	if (line != 0) {
    135 		(void)sprintf(buf, "%s%s(%d)",
    136 			      fn, qm ? "?" : "", line);
    137 	} else {
    138 		(void)sprintf(buf, "%s", fn);
    139 	}
    140 
    141 	return buf;
    142 }
    143