using boost::system::system_error;
namespace fs = boost::filesystem;
-namespace
+namespace {
+void report_system_error(const system_error& ex)
{
- 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'
- ;
- }
+ << " ex.what() is " << ex.what() << '\n';
+}
- void report_filesystem_error(const system_error& ex)
- {
+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'
- ;
- }
+ << " ex.what() is " << ex.what() << '\n';
+}
- void report_status(fs::file_status s)
- {
+void report_status(fs::file_status s)
+{
cout << " file_status::type() is ";
switch (s.type())
{
case fs::status_error:
- cout << "status_error\n"; break;
+ cout << "status_error\n";
+ break;
case fs::file_not_found:
- cout << "file_not_found\n"; break;
+ cout << "file_not_found\n";
+ break;
case fs::regular_file:
- cout << "regular_file\n"; break;
+ cout << "regular_file\n";
+ break;
case fs::directory_file:
- cout << "directory_file\n"; break;
+ cout << "directory_file\n";
+ break;
case fs::symlink_file:
- cout << "symlink_file\n"; break;
+ cout << "symlink_file\n";
+ break;
case fs::block_file:
- cout << "block_file\n"; break;
+ cout << "block_file\n";
+ break;
case fs::character_file:
- cout << "character_file\n"; break;
+ cout << "character_file\n";
+ break;
case fs::fifo_file:
- cout << "fifo_file\n"; break;
+ cout << "fifo_file\n";
+ break;
case fs::socket_file:
- cout << "socket_file\n"; break;
+ cout << "socket_file\n";
+ break;
case fs::type_unknown:
- cout << "type_unknown\n"; break;
+ cout << "type_unknown\n";
+ break;
default:
- cout << "not a valid enumeration constant\n";
+ cout << "not a valid enumeration constant\n";
}
- }
+}
- void report_error_code(const error_code& ec)
- {
+void report_error_code(const error_code& ec)
+{
cout << " ec:\n"
<< " value() is " << ec.value() << '\n'
<< " category().name() is " << ec.category().name() << '\n'
- << " message() is " << ec.message() << '\n'
- ;
- }
+ << " message() is " << ec.message() << '\n';
+}
- bool threw_exception;
+bool threw_exception;
-}
+} // namespace
int main(int argc, char* argv[])
{
- if (argc < 2)
- {
- cout << "Usage: error_demo path\n";
- return 1;
- }
-
- error_code ec;
-
- //// 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]);
-
- fs::file_status s;
- bool b (false);
- fs::directory_iterator di;
-
- // get status - no error_code
-
- cout << "\nstatus(\"" << p.string() << "\");\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
-
- cout << "\nstatus(\"" << p.string() << "\", ec);\n";
- s = fs::status(p, ec);
- report_status(s);
- report_error_code(ec);
-
- // query existence - no error_code
-
- cout << "\nexists(\"" << p.string() << "\");\n";
- threw_exception = false;
-
- try { b = fs::exists(p); }
- catch (const system_error& ex)
- {
- report_filesystem_error(ex);
- threw_exception = true;
- }
- if (!threw_exception)
- {
- cout << " Did not throw exception\n"
- << " Returns: " << (b ? "true" : "false") << '\n';
- }
-
- // query existence - with error_code
-
- // directory_iterator - no error_code
-
- cout << "\ndirectory_iterator(\"" << p.string() << "\");\n";
- threw_exception = false;
-
- try { di = fs::directory_iterator(p); }
- catch (const system_error& ex)
- {
- report_filesystem_error(ex);
- threw_exception = true;
- }
- if (!threw_exception)
- {
- cout << " Did not throw exception\n"
- << (di == fs::directory_iterator() ? " Equal" : " Not equal")
- << " to the end iterator\n";
- }
-
- // directory_iterator - with error_code
-
- cout << "\ndirectory_iterator(\"" << p.string() << "\", ec);\n";
- di = fs::directory_iterator(p, ec);
- cout << (di == fs::directory_iterator() ? " Equal" : " Not equal")
- << " to the end iterator\n";
- report_error_code(ec);
-
- return 0;
+ if (argc < 2)
+ {
+ cout << "Usage: error_demo path\n";
+ return 1;
+ }
+
+ error_code ec;
+
+ //// 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]);
+
+ fs::file_status s;
+ bool b(false);
+ fs::directory_iterator di;
+
+ // get status - no error_code
+
+ cout << "\nstatus(\"" << p.string() << "\");\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
+
+ cout << "\nstatus(\"" << p.string() << "\", ec);\n";
+ s = fs::status(p, ec);
+ report_status(s);
+ report_error_code(ec);
+
+ // query existence - no error_code
+
+ cout << "\nexists(\"" << p.string() << "\");\n";
+ threw_exception = false;
+
+ try
+ {
+ b = fs::exists(p);
+ }
+ catch (const system_error& ex)
+ {
+ report_filesystem_error(ex);
+ threw_exception = true;
+ }
+ if (!threw_exception)
+ {
+ cout << " Did not throw exception\n"
+ << " Returns: " << (b ? "true" : "false") << '\n';
+ }
+
+ // query existence - with error_code
+
+ // directory_iterator - no error_code
+
+ cout << "\ndirectory_iterator(\"" << p.string() << "\");\n";
+ threw_exception = false;
+
+ try
+ {
+ di = fs::directory_iterator(p);
+ }
+ catch (const system_error& ex)
+ {
+ report_filesystem_error(ex);
+ threw_exception = true;
+ }
+ if (!threw_exception)
+ {
+ cout << " Did not throw exception\n"
+ << (di == fs::directory_iterator() ? " Equal" : " Not equal")
+ << " to the end iterator\n";
+ }
+
+ // directory_iterator - with error_code
+
+ cout << "\ndirectory_iterator(\"" << p.string() << "\", ec);\n";
+ di = fs::directory_iterator(p, ec);
+ cout << (di == fs::directory_iterator() ? " Equal" : " Not equal")
+ << " to the end iterator\n";
+ report_error_code(ec);
+
+ return 0;
}
projects / ceph.git / blobdiff