00001 //# Options.h: base class for storing and parsing parameters 00002 //# Copyright (C) 2011 00003 //# Associated Universities, Inc. Washington DC, USA. 00004 //# 00005 //# This library is free software; you can redistribute it and/or modify it 00006 //# under the terms of the GNU Library General Public License as published by 00007 //# the Free Software Foundation; either version 2 of the License, or (at your 00008 //# option) any later version. 00009 //# 00010 //# This library is distributed in the hope that it will be useful, but WITHOUT 00011 //# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 00012 //# FITNESS FOR A PARTICULAR PURPOSE. See the GNU Library General Public 00013 //# License for more details. 00014 //# 00015 //# You should have received a copy of the GNU Library General Public License 00016 //# along with this library; if not, write to the Free Software Foundation, 00017 //# Inc., 675 Massachusetts Ave, Cambridge, MA 02139, USA. 00018 //# 00019 //# Correspondence concerning AIPS++ should be addressed as follows: 00020 //# Internet email: aips2-request@nrao.edu. 00021 //# Postal address: AIPS++ Project Office 00022 //# National Radio Astronomy Observatory 00023 //# 520 Edgemont Road 00024 //# Charlottesville, VA 22903-2475 USA 00025 //# 00026 //# $Id$ 00027 00028 #ifndef DISPLAY_OPTIONS_H__ 00029 #define DISPLAY_OPTIONS_H__ 00030 #include <map> 00031 #include <set> 00032 #include <string> 00033 #include <sys/stat.h> 00034 00035 namespace casa { 00036 namespace viewer { 00037 00038 class Options { 00039 public: 00040 class Kernel { 00041 public: 00042 virtual std::string tmp( ) const = 0; 00043 virtual ~Kernel( ) { } 00044 }; 00045 00046 std::string tmp( ) const { 00047 return kernel->tmp( ); 00048 } 00049 00050 // this returns a path to be used as a temporary file or directory, and 00051 // by default, deletes the file when the viewer exits... the "base_name" 00052 // is just the name to be used as a starting point for finding a unique 00053 // file name, an example would be "my_tmp_file"... but it could be 00054 // anything (not including directories, i.e. "/")... this function 00055 // guarantees that no two returned strings will be identical... and that 00056 // all will be valid path names... 00057 std::string temporaryPath( const std::string &base_name, bool remove=true ) { 00058 return _temporary_path_( base_name, remove ); 00059 } 00060 00061 Options( ) { } /*** initialized by options_init_ ***/ 00062 ~Options( ) { } /*** finalized by options_init_ ***/ 00063 00064 00065 private: 00066 friend class options_init_; 00067 Options( const Options & ) { } 00068 const Options &operator=(const Options&) { 00069 return *this; 00070 } 00071 void init( Kernel *k ) { 00072 kernel = k; 00073 returned_paths = new std::map<std::string,std::pair<std::string,bool> >( ); 00074 } 00075 void finalize( ); 00076 typedef std::map<std::string,std::pair<std::string,bool> > path_map; 00077 path_map *returned_paths; 00078 Kernel *kernel; 00079 00080 std::string _temporary_path_( const std::string &/*base_dir_name*/, bool /*remove*/ ); 00081 }; 00082 00083 extern Options options; 00084 00085 static class options_init_ { 00086 public: 00087 options_init_( ) { 00088 if ( count++ == 0 ) do_init( ); 00089 } 00090 ~options_init_( ) { 00091 if ( --count == 0 ) { 00092 options.finalize( ); 00093 } 00094 } 00095 private: 00096 static unsigned int count; 00097 // to be defined in qt (or other windowing library) land.... 00098 void do_init( ); 00099 } _options_init_object_; 00100 } 00101 } 00102 00103 #endif