Subject: [Boost-commit] svn:boost r57548 - sandbox/filesystem-v3/libs/filesystem/example
From: bdawes_at_[hidden]
Date: 2009-11-10 13:06:29
Author: bemandawes
Date: 2009-11-10 13:06:28 EST (Tue, 10 Nov 2009)
New Revision: 57548
URL: http://svn.boost.org/trac/boost/changeset/57548
Log:
Initial commit
Added:
sandbox/filesystem-v3/libs/filesystem/example/error_demo.cpp (contents, props changed)
Added: sandbox/filesystem-v3/libs/filesystem/example/error_demo.cpp
==============================================================================
--- (empty file)
+++ sandbox/filesystem-v3/libs/filesystem/example/error_demo.cpp 2009-11-10 13:06:28 EST (Tue, 10 Nov 2009)
@@ -0,0 +1,127 @@
+// error_demo.cpp --------------------------------------------------------------------//
+
+// Copyright Beman Dawes 2009
+
+// Distributed under the Boost Software License, Version 1.0.
+// See http://www.boost.org/LICENSE_1_0.txt
+
+// Library home page: http://www.boost.org/libs/filesystem
+
+//--------------------------------------------------------------------------------------//
+// //
+// The purpose of this program is to demonstrate how error reporting works. //
+// //
+//--------------------------------------------------------------------------------------//
+
+#include <boost/filesystem.hpp>
+#include <boost/system/system_error.hpp>
+#include <iostream>
+
+using std::cout;
+using boost::filesystem::path;
+using boost::filesystem::filesystem_error;
+using boost::system::error_code;
+using boost::system::system_error;
+namespace fs = boost::filesystem;
+
+namespace
+{
+ void report_system_error(const system_error& ex)
+ {
+ cout << " threw system_error:\n"
+ << " ex.code().value() is " << ex.code().value() << '\n'
+ << " ex.code().category().name() is " << ex.code().category().name() << '\n'
+ << " ex.what() is " << ex.what() << '\n'
+ ;
+ }
+
+ void report_filesystem_error(const system_error& ex)
+ {
+ cout << " Threw filesystem_error exception:\n"
+ << " ex.code().value() is " << ex.code().value() << '\n'
+ << " ex.code().category().name() is " << ex.code().category().name() << '\n'
+ << " ex.what() is " << ex.what() << '\n'
+ ;
+ }
+
+ void report_status(fs::file_status s)
+ {
+ cout << "file_status::type() is ";
+ switch (s.type())
+ {
+ case fs::status_error:
+ cout << "status_error\n"; break;
+ case fs::file_not_found:
+ cout << "file_not_found\n"; break;
+ case fs::regular_file:
+ cout << "regular_file\n"; break;
+ case fs::directory_file:
+ cout << "directory_file\n"; break;
+ case fs::symlink_file:
+ cout << "symlink_file\n"; break;
+ case fs::block_file:
+ cout << "block_file\n"; break;
+ case fs::character_file:
+ cout << "character_file\n"; break;
+ case fs::fifo_file:
+ cout << "fifo_file\n"; break;
+ case fs::socket_file:
+ cout << "socket_file\n"; break;
+ case fs::type_unknown:
+ cout << "type_unknown\n"; break;
+ default:
+ cout << "not a valid enumeration constant\n";
+ }
+ }
+
+ bool threw_exception;
+
+}
+
+int main(int argc, char* argv[])
+{
+ if (argc < 2)
+ {
+ cout << "Usage: error_demo path\n";
+ return 1;
+ }
+
+ // construct path - no error_code
+
+ try { path p1(argv[1]); }
+ catch (const system_error& ex)
+ {
+ cout << "construct path without error_code";
+ report_system_error(ex);
+ }
+
+ // construct path - with error_code
+
+
+ path p(argv[1]);
+
+ // get status - no error_code
+
+ fs::file_status s;
+
+ cout << "status(argv[1]);\n";
+ threw_exception = false;
+
+ try { s = fs::status(p); }
+ catch (const system_error& ex)
+ {
+ report_filesystem_error(ex);
+ threw_exception = true;
+ }
+ if (!threw_exception)
+ cout << " Did not throw exception\n";
+ report_status(s);
+
+ // get status - with error_code
+
+ // query existence - no error_code
+
+ // query existence - with error_code
+
+ return 0;
+}