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use crate::*;
#[must_use]
pub fn copy(source_path: impl AsRef<Path>, destination_path: impl AsRef<Path>) -> WriteResult<()> {
let source = get_entry(&source_path)?;
let destination = get_optional_entry(&destination_path)?;
let destination_type = destination.and_then(|e| Some(e.entry_type));
match (source.entry_type, destination_type) {
(EntryType::File, Some(EntryType::File)) => {
copy_file(source_path, destination_path)?;
}
(EntryType::File, Some(EntryType::Directory)) => {
let destination_path = destination_path.as_ref().join(source.name);
copy_file(source_path, destination_path)?;
}
(EntryType::File, None) => {
make_parent_directory(&destination_path)?;
copy_file(&source_path, &destination_path)?;
}
(EntryType::Directory, Some(EntryType::File)) => {
// The file is replaced by a copy of the source directory
remove_file(&destination_path)?;
copy_directory(&source_path, &destination_path)?;
}
(EntryType::Directory, Some(EntryType::Directory)) => {
// The destination is filled with the contents of the source directory
for entry in list_directory(source_path)? {
let destination_path = destination_path.as_ref().join(&entry.name);
copy_file(entry.path, destination_path)?;
}
}
(EntryType::Directory, None) => {
// The destination is created as a copy of the source directory
copy_directory(&source_path, &destination_path)?;
}
}
Ok(())
}
#[must_use]
fn copy_file(source_path: impl AsRef<Path>, destination_path: impl AsRef<Path>) -> WriteResult<()> {
let copy_result = std::fs::copy(&source_path, &destination_path);
io_result_to_write_result(copy_result, &destination_path.as_ref())?;
Ok(())
}
#[must_use]
fn copy_directory(source_path: impl AsRef<Path>, destination_path: impl AsRef<Path>) -> WriteResult<()> {
for entry in list_directory(&source_path)? {
let destination_path = destination_path.as_ref().join(entry.name);
copy(entry.path, &destination_path)?;
}
Ok(())
}
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