usr.bin/xlint/lint2/msg.c

   1 /*      $NetBSD: msg.c,v 1.9 2005/04/07 16:28:40 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 #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 1.9 2005/04/07 16:28:40 christos Exp $");
  41 #endif
  42
  43 #include <stdio.h>
  44 #include <stdarg.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         int     qm, src, line;
 118
 119         if (Hflag && posp->p_src != posp->p_isrc) {
 120                 src = posp->p_isrc;
 121                 line = posp->p_iline;
 122         } else {
 123                 src = posp->p_src;
 124                 line = posp->p_line;
 125         }
 126         qm = !Hflag && posp->p_src != posp->p_isrc;
 127
 128         len = strlen(fn = lbasename(fnames[src]));
 129         len += 3 * sizeof (u_short) + 4;
 130
 131         if (len > blen)
 132                 buf = xrealloc(buf, blen = len);
 133         if (line != 0) {
 134                 (void)sprintf(buf, "%s%s(%hu)",
 135                               fn, qm ? "?" : "", line);
 136         } else {
 137                 (void)sprintf(buf, "%s", fn);
 138         }
 139
 140         return (buf);
 141 }