Chris@16: /*
Chris@16:     Copyright 2005-2007 Adobe Systems Incorporated
Chris@16:    
Chris@16:     Use, modification and distribution are subject to the Boost Software License,
Chris@16:     Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
Chris@16:     http://www.boost.org/LICENSE_1_0.txt).
Chris@16: 
Chris@16:     See http://opensource.adobe.com/gil for most recent version including documentation.
Chris@16: */
Chris@16: /*************************************************************************************************/
Chris@16: 
Chris@16: #ifndef GIL_IO_ERROR_H
Chris@16: #define GIL_IO_ERROR_H
Chris@16: 
Chris@16: /// \file
Chris@16: /// \brief  Handle input-output errors
Chris@16: /// \author Lubomir Bourdev and Hailin Jin \n
Chris@16: ///         Adobe Systems Incorporated
Chris@16: /// \date   2005-2007 \n  Last updated on May 30, 2006
Chris@16: 
Chris@16: #include <ios>
Chris@16: #include "../../gil_config.hpp"
Chris@16: #include <boost/shared_ptr.hpp>
Chris@16: 
Chris@16: namespace boost { namespace gil {
Chris@16: 
Chris@16: inline void io_error(const char* descr) { throw std::ios_base::failure(descr); }
Chris@16: inline void io_error_if(bool expr, const char* descr="") { if (expr) io_error(descr); }
Chris@16: 
Chris@16: namespace detail {
Chris@16:     class file_mgr {
Chris@16:     protected:
Chris@16:         shared_ptr<FILE> _fp;
Chris@16: 
Chris@16:         struct null_deleter { void operator()(void const*) const {} };
Chris@16:         file_mgr(FILE* file) : _fp(file, null_deleter()) {}
Chris@16: 
Chris@16:         file_mgr(const char* filename, const char* flags) {
Chris@16:             FILE* fp;
Chris@16:             io_error_if((fp=fopen(filename,flags))==NULL, "file_mgr: failed to open file");
Chris@16:             _fp=shared_ptr<FILE>(fp,fclose);
Chris@16:         }
Chris@16: 
Chris@16:     public:
Chris@16:         FILE* get() { return _fp.get(); }
Chris@16:     };
Chris@16: }
Chris@16: 
Chris@16: } }  // namespace boost::gil
Chris@16: 
Chris@16: #endif