+///////////////////////////////////////////////////////////////////////////////
+// Name: wx/cmdargs.h
+// Purpose: declaration of wxCmdLineArgsArray helper class
+// Author: Vadim Zeitlin
+// Created: 2007-11-12
+// RCS-ID: $Id$
+// Copyright: (c) 2007 Vadim Zeitlin <vadim@wxwindows.org>
+// Licence: wxWindows licence
+///////////////////////////////////////////////////////////////////////////////
+
+#ifndef _WX_CMDARGS_H_
+#define _WX_CMDARGS_H_
+
+#include "wx/arrstr.h"
+
+// ----------------------------------------------------------------------------
+// wxCmdLineArgsArray: helper class used by wxApp::argv
+// ----------------------------------------------------------------------------
+
+#if wxUSE_UNICODE
+
+// this class is used instead of either "char **" or "wchar_t **" (neither of
+// which would be backwards compatible with all the existing code) for argv
+// field of wxApp
+//
+// as it's used for compatibility, it tries to look as much as traditional
+// (char **) argv as possible, in particular it provides implicit conversions
+// to "char **" and also array-like operator[]
+class wxCmdLineArgsArray
+{
+public:
+ wxCmdLineArgsArray() { m_argsA = NULL; m_argsW = NULL; }
+
+ template <typename T>
+ wxCmdLineArgsArray& operator=(T **argv)
+ {
+ FreeArgs();
+
+ m_args.clear();
+
+ if ( argv )
+ {
+ while ( *argv )
+ m_args.push_back(*argv++);
+ }
+
+ return *this;
+ }
+
+ operator char**() const
+ {
+ if ( !m_argsA )
+ {
+ const size_t count = m_args.size();
+ m_argsA = new char *[count];
+ for ( size_t n = 0; n < count; n++ )
+ m_argsA[n] = wxStrdup(m_args[n].ToAscii());
+ }
+
+ return m_argsA;
+ }
+
+ operator wchar_t**() const
+ {
+ if ( !m_argsW )
+ {
+ const size_t count = m_args.size();
+ m_argsW = new wchar_t *[count];
+ for ( size_t n = 0; n < count; n++ )
+ m_argsW[n] = wxStrdup(m_args[n].wc_str());
+ }
+
+ return m_argsW;
+ }
+
+ // existing code does checks like "if ( argv )" and we want it to continue
+ // to compile, so provide this conversion even if it is pretty dangerous
+ operator bool() const
+ {
+ return !m_args.empty();
+ }
+
+ wxString operator[](size_t n) const
+ {
+ return m_args[n];
+ }
+
+ // this is the only method of this class which doesn't exist solely for
+ // compatibility purposes: it allows to access the arguments as a
+ // convenient array of wxStrings
+ const wxArrayString& GetArguments() const { return m_args; }
+
+ ~wxCmdLineArgsArray()
+ {
+ FreeArgs();
+ }
+
+private:
+ template <typename T>
+ void Free(T **args)
+ {
+ if ( !args )
+ return;
+
+ const size_t count = m_args.size();
+ for ( size_t n = 0; n < count; n++ )
+ free(args[n]);
+
+ delete [] args;
+ }
+
+ void FreeArgs()
+ {
+ Free(m_argsA);
+ Free(m_argsW);
+ }
+
+ wxArrayString m_args;
+ mutable char **m_argsA;
+ mutable wchar_t **m_argsW;
+
+ DECLARE_NO_COPY_CLASS(wxCmdLineArgsArray)
+};
+
+#endif // wxUSE_UNICODE
+
+#endif // _WX_CMDARGS_H_
+
projects / wxWidgets.git / commitdiff
