gdbsupport/errors.cc

   1 /* Error reporting facilities.
   2
   3    Copyright (C) 1986-2024 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 "errors.h"
  21 #if defined (USE_WIN32API) || defined(__CYGWIN__)
  22 #include <windows.h>
  23 #endif /* USE_WIN32API */
  24
  25 /* See gdbsupport/errors.h.  */
  26
  27 void
  28 warning (const char *fmt, ...)
  29 {
  30   va_list ap;
  31
  32   va_start (ap, fmt);
  33   vwarning (fmt, ap);
  34   va_end (ap);
  35 }
  36
  37 /* See gdbsupport/errors.h.  */
  38
  39 void
  40 error (const char *fmt, ...)
  41 {
  42   va_list ap;
  43
  44   va_start (ap, fmt);
  45   verror (fmt, ap);
  46   va_end (ap);
  47 }
  48
  49 /* See gdbsupport/errors.h.  */
  50
  51 void
  52 internal_error_loc (const char *file, int line, const char *fmt, ...)
  53 {
  54   va_list ap;
  55
  56   va_start (ap, fmt);
  57   internal_verror (file, line, fmt, ap);
  58   va_end (ap);
  59 }
  60
  61 /* See gdbsupport/errors.h.  */
  62
  63 void
  64 internal_warning_loc (const char *file, int line, const char *fmt, ...)
  65 {
  66   va_list ap;
  67
  68   va_start (ap, fmt);
  69   internal_vwarning (file, line, fmt, ap);
  70   va_end (ap);
  71 }
  72
  73 /* See errors.h.  */
  74
  75 std::string
  76 perror_string (const char *prefix, int errnum)
  77 {
  78   const char *err;
  79
  80   if (errnum != 0)
  81     err = safe_strerror (errnum);
  82   else
  83     err = safe_strerror (errno);
  84   return std::string (prefix) + ": " + err;
  85 }
  86
  87 /* See errors.h.  */
  88
  89 void
  90 perror_with_name (const char *string, int errnum)
  91 {
  92   std::string combined = perror_string (string, errnum);
  93
  94   error (_("%s."), combined.c_str ());
  95 }
  96
  97 #if defined (USE_WIN32API) || defined(__CYGWIN__)
  98
  99 /* See errors.h.  */
 100
 101 const char *
 102 strwinerror (ULONGEST error)
 103 {
 104   static char buf[1024];
 105   TCHAR *msgbuf;
 106   DWORD lasterr = GetLastError ();
 107   DWORD chars = FormatMessage (FORMAT_MESSAGE_FROM_SYSTEM
 108                                | FORMAT_MESSAGE_ALLOCATE_BUFFER,
 109                                NULL,
 110                                error,
 111                                0, /* Default language */
 112                                (LPTSTR) &msgbuf,
 113                                0,
 114                                NULL);
 115   if (chars != 0)
 116     {
 117       /* If there is an \r\n appended, zap it.  */
 118       if (chars >= 2
 119           && msgbuf[chars - 2] == '\r'
 120           && msgbuf[chars - 1] == '\n')
 121         {
 122           chars -= 2;
 123           msgbuf[chars] = 0;
 124         }
 125
 126       if (chars > ARRAY_SIZE (buf) - 1)
 127         {
 128           chars = ARRAY_SIZE (buf) - 1;
 129           msgbuf [chars] = 0;
 130         }
 131
 132 #ifdef UNICODE
 133       wcstombs (buf, msgbuf, chars + 1);
 134 #else
 135       strncpy (buf, msgbuf, chars + 1);
 136 #endif
 137       LocalFree (msgbuf);
 138     }
 139   else
 140     sprintf (buf, "unknown win32 error (%u)", (unsigned) error);
 141
 142   SetLastError (lasterr);
 143   return buf;
 144 }
 145
 146 /* See errors.h.  */
 147
 148 void
 149 throw_winerror_with_name (const char *string, ULONGEST err)
 150 {
 151   error (_("%s (error %u): %s"), string, (unsigned) err, strwinerror (err));
 152 }
 153
 154 #endif /* USE_WIN32API */