xtd 0.2.0
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file_info.cpp

Show how to use xtd::io::file_info class.

#include <xtd/io/file_info>
#include <xtd/io/path>
#include <xtd/block_scope>
#include <xtd/console>
#include <xtd/startup>
using namespace xtd;
using namespace xtd::io;
class program {
public:
static auto main() {
auto path = path::get_temp_file_name();
// Create a file to write to.
block_scope_(auto sw = fi1.create_text()) {
sw.write_line("Hello");
sw.write_line("And");
sw.write_line("Welcome");
}
// Open the file to read from.
block_scope_(auto sr = fi1.open_text()) {
while (!sr.end_of_stream())
console::write_line(sr.read_line());
}
try {
auto path2 = path::get_temp_file_name();
file_info fi2(path2);
// Ensure that the target does not exist.
fi2.remove();
// Copy the file.
fi1.copy_to(path2);
console::write_line("{} was copied to {}.", path, path2);
// Delete the newly created file.
fi2.remove();
console::write_line("{} was successfully deleted.", path2);
} catch (const system_exception& e) {
console::write_line("The process failed: {}", e.to_string());
}
}
};
startup_(program::main);
// This code produces the following output :
// Hello
// And
// Welcome
// /var/folders/d5/k7mxnq214dxf3jbvvvhpbfqh0000gn/T/tmp99dcece9.tmp was copied to /var/folders/d5/k7mxnq214dxf3jbvvvhpbfqh0000gn/T/tmp235be07d.tmp.
// /var/folders/d5/k7mxnq214dxf3jbvvvhpbfqh0000gn/T/tmp235be07d.tmp was successfully deleted.
Provides static methods for the creation, copying, deletion, moving, and opening of files,...
Definition file_info.h:41
xtd::io::file_info copy_to(const xtd::string &dest_file_name) const
Copies an existing file to a new file, disallowing the overwriting of an existing file.
xtd::io::stream_reader open_text() const
Creates a xtd::io::stream_reader that reads from an existing text file.
xtd::io::stream_writer create_text() const
Creates a std::ofstream that writes a new text file.
void remove() const override
Permanently deletes a file.
Performs operations on std::basic_string instances that contain file or directory path information....
Definition path.h:36
The exception that is thrown when a method call is invalid for the object's current state.
Definition system_exception.h:18
#define startup_(main_method)
Defines the entry point to be called when the application loads. Generally this is set either to the ...
Definition startup.h:175
#define block_scope_(...)
The specified expression is cleared automatically when the scope is ended.
Definition block_scope.h:25
The xtd::io namespace contains types that allow reading and writing to files and data streams,...
Definition binary_reader.h:16
The xtd namespace contains all fundamental classes to access Hardware, Os, System,...
Definition xtd_about_box.h:10