gdbsupport/errors.cc

   1 /* Error reporting facilities.
   2
   3    Copyright (C) 1986-2022 Free Software Foundation, Inc.
   4
   5    This file is part of GDB.
   6
   7    This program is free software; you can redistribute it and/or modify
   8    it under the terms of the GNU General Public License as published by
   9    the Free Software Foundation; either version 3 of the License, or
  10    (at your option) any later version.
  11
  12    This program is distributed in the hope that it will be useful,
  13    but WITHOUT ANY WARRANTY; without even the implied warranty of
  14    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15    GNU General Public License for more details.
  16
  17    You should have received a copy of the GNU General Public License
  18    along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
  19
  20 #include "common-defs.h"
  21 #include "errors.h"
  22 #if defined (USE_WIN32API) || defined(__CYGWIN__)
  23 #include <windows.h>
  24 #endif /* USE_WIN32API */
  25
  26 /* See gdbsupport/errors.h.  */
  27
  28 void
  29 warning (const char *fmt, ...)
  30 {
  31   va_list ap;
  32
  33   va_start (ap, fmt);
  34   vwarning (fmt, ap);
  35   va_end (ap);
  36 }
  37
  38 /* See gdbsupport/errors.h.  */
  39
  40 void
  41 error (const char *fmt, ...)
  42 {
  43   va_list ap;
  44
  45   va_start (ap, fmt);
  46   verror (fmt, ap);
  47   va_end (ap);
  48 }
  49
  50 /* See gdbsupport/errors.h.  */
  51
  52 void
  53 internal_error_loc (const char *file, int line, const char *fmt, ...)
  54 {
  55   va_list ap;
  56
  57   va_start (ap, fmt);
  58   internal_verror (file, line, fmt, ap);
  59   va_end (ap);
  60 }
  61
  62 /* See gdbsupport/errors.h.  */
  63
  64 void
  65 internal_warning_loc (const char *file, int line, const char *fmt, ...)
  66 {
  67   va_list ap;
  68
  69   va_start (ap, fmt);
  70   internal_vwarning (file, line, fmt, ap);
  71   va_end (ap);
  72 }
  73
  74 #if defined (USE_WIN32API) || defined(__CYGWIN__)
  75
  76 /* See errors.h.  */
  77
  78 const char *
  79 strwinerror (ULONGEST error)
  80 {
  81   static char buf[1024];
  82   TCHAR *msgbuf;
  83   DWORD lasterr = GetLastError ();
  84   DWORD chars = FormatMessage (FORMAT_MESSAGE_FROM_SYSTEM
  85                                | FORMAT_MESSAGE_ALLOCATE_BUFFER,
  86                                NULL,
  87                                error,
  88                                0, /* Default language */
  89                                (LPTSTR) &msgbuf,
  90                                0,
  91                                NULL);
  92   if (chars != 0)
  93     {
  94       /* If there is an \r\n appended, zap it.  */
  95       if (chars >= 2
  96           && msgbuf[chars - 2] == '\r'
  97           && msgbuf[chars - 1] == '\n')
  98         {
  99           chars -= 2;
 100           msgbuf[chars] = 0;
 101         }
 102
 103       if (chars > ARRAY_SIZE (buf) - 1)
 104         {
 105           chars = ARRAY_SIZE (buf) - 1;
 106           msgbuf [chars] = 0;
 107         }
 108
 109 #ifdef UNICODE
 110       wcstombs (buf, msgbuf, chars + 1);
 111 #else
 112       strncpy (buf, msgbuf, chars + 1);
 113 #endif
 114       LocalFree (msgbuf);
 115     }
 116   else
 117     sprintf (buf, "unknown win32 error (%u)", (unsigned) error);
 118
 119   SetLastError (lasterr);
 120   return buf;
 121 }
 122
 123 #endif /* USE_WIN32API */