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#include <giomm.h>
#include <iostream>
#include <cstring>
// Use this line if you want debug output:
// std::ostream& ostr = std::cout;
// This seems nicer and more useful than putting an ifdef around the use of ostr:
std::stringstream debug;
std::ostream& ostr = debug;
#ifdef G_OS_WIN32
#define TEST_FILE "c:/windows/write.exe"
#else
#define TEST_FILE "/etc/fstab"
#endif
int
main(int, char**)
{
Glib::init();
Gio::init();
try
{
auto file = Gio::File::create_for_path(TEST_FILE);
if (!file)
{
std::cerr << "Gio::File::create_for_path() returned an empty RefPtr." << std::endl;
return EXIT_FAILURE;
}
auto stream = file->read();
if (!stream)
{
std::cerr << "Gio::File::read() returned an empty RefPtr." << std::endl;
return EXIT_FAILURE;
}
char buffer[1000]; // TODO: This is unpleasant.
std::memset(buffer, 0, sizeof buffer);
const gssize bytes_read = stream->read(buffer, sizeof buffer - 1);
if (bytes_read)
ostr << "File contents read: " << buffer << std::endl;
else
{
std::cerr << "Gio::InputStream::read() read 0 bytes." << std::endl;
return EXIT_FAILURE;
}
}
catch (const Glib::Error& ex)
{
std::cerr << "Exception caught: " << ex.what() << std::endl;
return EXIT_FAILURE;
}
// Test temporary file.
try
{
auto [file, iostream] = Gio::File::create_tmp();
if (!file || !iostream)
{
std::cerr << "Gio::File::create_tmp() returned an empty RefPtr." << std::endl;
return EXIT_FAILURE;
}
ostr << "Tmp file parse name: " << file->get_parse_name() << std::endl;
auto input_stream = iostream->get_input_stream();
auto output_stream = iostream->get_output_stream();
// Write to the temporary file.
const std::string tmp_string = "This is a temporary file.";
const gssize bytes_written = output_stream->write(tmp_string);
if (bytes_written != static_cast<int>(tmp_string.size()))
{
std::cerr << "Gio::OutputStream::write() wrote: " << bytes_written
<< " bytes. Should write " << tmp_string.size() << " bytes."
<< std::endl;
return EXIT_FAILURE;
}
output_stream->flush();
iostream->seek(0, Glib::SeekType::SET);
// Read what was written.
char buffer[100];
std::memset(buffer, 0, sizeof buffer);
const gssize bytes_read = input_stream->read(buffer, sizeof buffer - 1);
ostr << "Tmp file contents read: " << buffer << std::endl;
if (bytes_read != bytes_written || buffer != tmp_string)
{
std::cerr << "Gio::InputStream::read() read: " << buffer << std::endl;
return EXIT_FAILURE;
}
iostream->close();
file->remove();
}
catch (const Glib::FileError& ex)
{
std::cerr << "Glib::FileError exception caught: " << ex.what() << std::endl;
return EXIT_FAILURE;
}
catch (const Glib::Error& ex)
{
std::cerr << "Glib::Error exception caught: " << ex.what() << std::endl;
return EXIT_FAILURE;
}
return EXIT_SUCCESS;
}
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