usr.bin/window/error.c

   1 /*      $NetBSD: error.c,v 1.6 2003/08/07 11:17:25 agc Exp $    */
   2
   3 /*
   4  * Copyright (c) 1983, 1993
   5  *      The Regents of the University of California.  All rights reserved.
   6  *
   7  * This code is derived from software contributed to Berkeley by
   8  * Edward Wang at The University of California, Berkeley.
   9  *
  10  * Redistribution and use in source and binary forms, with or without
  11  * modification, are permitted provided that the following conditions
  12  * are met:
  13  * 1. Redistributions of source code must retain the above copyright
  14  *    notice, this list of conditions and the following disclaimer.
  15  * 2. Redistributions in binary form must reproduce the above copyright
  16  *    notice, this list of conditions and the following disclaimer in the
  17  *    documentation and/or other materials provided with the distribution.
  18  * 3. Neither the name of the University nor the names of its contributors
  19  *    may be used to endorse or promote products derived from this software
  20  *    without specific prior written permission.
  21  *
  22  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  23  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  24  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  25  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  26  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  27  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  28  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  29  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  30  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  31  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  32  * SUCH DAMAGE.
  33  */
  34
  35 #include <sys/cdefs.h>
  36 #ifndef lint
  37 #if 0
  38 static char sccsid[] = "@(#)error.c     8.1 (Berkeley) 6/6/93";
  39 #else
  40 __RCSID("$NetBSD: error.c,v 1.6 2003/08/07 11:17:25 agc Exp $");
  41 #endif
  42 #endif /* not lint */
  43
  44 #include "defs.h"
  45 #include "context.h"
  46 #include "char.h"
  47
  48 #define ERRLINES 10                     /* number of lines for errwin */
  49
  50 void
  51 error(const char *fmt, ...)
  52 {
  53         va_list ap;
  54
  55         va_start(ap, fmt);
  56         verror(fmt, ap);
  57         va_end(ap);
  58 }
  59
  60 void
  61 verror(const char *fmt, va_list ap)
  62 {
  63         struct context *x;
  64         struct ww *w;
  65
  66         for (x = &cx; x != 0 && x->x_type != X_FILE; x = x->x_link)
  67                 ;
  68         if (x == 0) {
  69                 if (terse)
  70                         wwbell();
  71                 else {
  72                         wwvprintf(cmdwin, fmt, ap);
  73                         wwputs("  ", cmdwin);
  74                 }
  75                 return;
  76         }
  77         if (x->x_noerr)
  78                 return;
  79         if ((w = x->x_errwin) == 0) {
  80                 char buf[512];
  81
  82                 (void) snprintf(buf, sizeof(buf), "Errors from %s",
  83                     x->x_filename);
  84                 if ((w = x->x_errwin = openiwin(ERRLINES, buf)) == 0) {
  85                         wwputs("Can't open error window.  ", cmdwin);
  86                         x->x_noerr = 1;
  87                         return;
  88                 }
  89         }
  90         if (more(w, 0) == 2) {
  91                 x->x_noerr = 1;
  92                 return;
  93         }
  94         wwprintf(w, "line %d: ", x->x_lineno);
  95         wwvprintf(w, fmt, ap);
  96         wwputc('\n', w);
  97 }
  98
  99 void
 100 err_end(void)
 101 {
 102         if (cx.x_type == X_FILE && cx.x_errwin != 0) {
 103                 if (!cx.x_noerr)
 104                         waitnl(cx.x_errwin);
 105                 closeiwin(cx.x_errwin);
 106                 cx.x_errwin = 0;
 107         }
 108 }