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LibGUI: Add TextEditor::write_to_file(Core::Stream::File&)

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This overload use the `Core::Stream` API instead of the now deprecated
one `Core::File`.
This commit is contained in:
Lucas CHOLLET 2023-01-07 11:52:46 -05:00 • committed by Sam Atkins
parent 72b144e9e9
commit cf1eea27d3
2 changed files with 28 additions and 0 deletions
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27
Userland/Libraries/LibGUI/TextEditor.cpp
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@ -1512,6 +1512,33 @@ bool TextEditor::write_to_file(Core::File& file)
return true;
}
ErrorOr<void> TextEditor::write_to_file(Core::Stream::File& file)
{
off_t file_size = 0;
if (line_count() == 1 && line(0).is_empty()) {
// Truncate to zero.
} else {
// Compute the final file size and ftruncate() to make writing fast.
// FIXME: Remove this once the kernel is smart enough to do this instead.
for (size_t i = 0; i < line_count(); ++i)
file_size += line(i).length();
file_size += line_count();
}
TRY(file.truncate(file_size));
if (file_size == 0) {
// A size 0 file doesn't need a data copy.
} else {
for (size_t i = 0; i < line_count(); ++i) {
TRY(file.write(line(i).to_utf8().bytes()));
TRY(file.write("\n"sv.bytes()));
}
}
document().set_unmodified();
return {};
}
DeprecatedString TextEditor::text() const
{
return document().text();