usr.bin/window/error.c

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