ustdxept.cc

   1 // This file is part of the ustl library, an STL implementation.
   2 //
   3 // Copyright (C) 2005 by Mike Sharov <msharov@users.sourceforge.net>
   4 // This file is free software, distributed under the MIT License.
   5 //
   6 // ustdxept.cc
   7 //
   8
   9 #include "ustdxept.h"
  10 #include "mistream.h"
  11 #include "mostream.h"
  12 #include "strmsize.h"
  13 #include "uiosfunc.h"
  14 #include "uspecial.h"
  15
  16 namespace ustl {
  17
  18 //----------------------------------------------------------------------
  19
  20 /// \p arg contains a description of the error.
  21 error_message::error_message (const char* arg) throw()
  22 : m_Arg ()
  23 {
  24     try { m_Arg = arg; } catch (...) {}
  25     set_format (xfmt_ErrorMessage);
  26 }
  27
  28 /// Virtual destructor
  29 error_message::~error_message (void) throw()
  30 {
  31 }
  32
  33 /// Returns a descriptive error message. fmt="%s: %s"
  34 void error_message::info (string& msgbuf, const char* fmt) const throw()
  35 {
  36     if (!fmt) fmt = "%s: %s";
  37     try { msgbuf.format (fmt, what(), m_Arg.cdata()); } catch (...) {}
  38 }
  39
  40 /// Reads the object from stream \p is.
  41 void error_message::read (istream& is)
  42 {
  43     exception::read (is);
  44     is >> m_Arg >> ios::align();
  45 }
  46
  47 /// Writes the object to stream \p os.
  48 void error_message::write (ostream& os) const
  49 {
  50     exception::write (os);
  51     os << m_Arg << ios::align();
  52 }
  53
  54 /// Returns the size of the written object.
  55 size_t error_message::stream_size (void) const
  56 {
  57     return (exception::stream_size() + Align (stream_size_of (m_Arg)));
  58 }
  59
  60 //----------------------------------------------------------------------
  61
  62 } // namespace ustl
  63
  64