usr.bin/xlint/lint2/msg.c

   1 /*      $NetBSD: msg.c,v 1.2 1995/07/03 21:24:56 cgd 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  * $NetBSD: msg.c,v 1.2 1995/07/03 21:24:56 cgd Exp $
  34  * $DragonFly: src/usr.bin/xlint/lint2/msg.c,v 1.7 2004/07/07 12:24:01 asmodai Exp $
  35  */
  36
  37 #include <string.h>
  38
  39 #include <stdio.h>
  40 #include <stdarg.h>
  41
  42 #include "lint2.h"
  43
  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 };
  65
  66 static  const   char *basename(const char *);
  67
  68 void
  69 msg(int n, ...)
  70 {
  71         va_list ap;
  72
  73         va_start(ap, n);
  74
  75         (void)vprintf(msgs[n], ap);
  76         (void)printf("\n");
  77
  78         va_end(ap);
  79 }
  80
  81 /*
  82  * Return a pointer to the last component of a path.
  83  */
  84 static const char *
  85 basename(const char *path)
  86 {
  87         const   char *cp, *cp1, *cp2;
  88
  89         if (Fflag)
  90                 return (path);
  91
  92         cp = cp1 = cp2 = path;
  93         while (*cp != '\0') {
  94                 if (*cp++ == '/') {
  95                         cp2 = cp1;
  96                         cp1 = cp;
  97                 }
  98         }
  99         return (*cp1 == '\0' ? cp2 : cp1);
 100 }
 101
 102 /*
 103  * Create a string which describes a position in a source file.
 104  */
 105 const char *
 106 mkpos(pos_t *posp)
 107 {
 108         size_t  len;
 109         const   char *fn;
 110         static  char    *buf;
 111         static  size_t  blen = 0;
 112         int     qm, src, line;
 113
 114         if (Hflag && posp->p_src != posp->p_isrc) {
 115                 src = posp->p_isrc;
 116                 line = posp->p_iline;
 117         } else {
 118                 src = posp->p_src;
 119                 line = posp->p_line;
 120         }
 121         qm = !Hflag && posp->p_src != posp->p_isrc;
 122
 123         len = strlen(fn = basename(fnames[src]));
 124         len += 3 * sizeof (u_short) + 4;
 125
 126         if (len > blen)
 127                 buf = xrealloc(buf, blen = len);
 128         if (line != 0) {
 129                 (void)sprintf(buf, "%s%s(%hu)",
 130                               fn, qm ? "?" : "", line);
 131         } else {
 132                 (void)sprintf(buf, "%s", fn);
 133         }
 134
 135         return (buf);
 136 }