DevComp/zip-rs-wasm
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity

Add function to raw copy files and update metadata (#260)

Browse source 
Co-authored-by: Chris Hennick <4961925+Pr0methean@users.noreply.github.com>
This commit is contained in:
ardurin 2024-11-19 19:54:32 +00:00 • committed by GitHub
parent a5722e6de8
commit 0ea2744c89
Signed by: DevComp
GPG key ID: B5690EEEBB952194
1 changed files with 50 additions and 5 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

55
src/write.rs
View file

@ -1258,11 +1258,7 @@ impl<W: Write + Seek> ZipWriter<W> {
/// Ok(())
/// }
/// ```
pub fn raw_copy_file_rename<S: ToString>(
&mut self,
mut file: ZipFile,
name: S,
) -> ZipResult<()> {
pub fn raw_copy_file_rename<S: ToString>(&mut self, file: ZipFile, name: S) -> ZipResult<()> {
let mut options = SimpleFileOptions::default()
.large_file(file.compressed_size().max(file.size()) > spec::ZIP64_BYTES_THR)
.last_modified_time(
@ -1274,7 +1270,15 @@ impl<W: Write + Seek> ZipWriter<W> {
options = options.unix_permissions(perms);
}
Self::normalize_options(&mut options);
self.raw_copy_file_rename_internal(file, name, options)
}
fn raw_copy_file_rename_internal<S: ToString>(
&mut self,
mut file: ZipFile,
name: S,
options: SimpleFileOptions,
) -> ZipResult<()> {
let raw_values = ZipRawValues {
crc32: file.crc32(),
compressed_size: file.compressed_size(),
@ -1330,6 +1334,47 @@ impl<W: Write + Seek> ZipWriter<W> {
self.raw_copy_file_rename(file, name)
}
/// Add a new file using the already compressed data from a ZIP file being read and set the last
/// modified date and unix mode. This allows faster copies of the `ZipFile` since there is no need
/// to decompress and compress it again. Any `ZipFile` metadata other than the last modified date
/// and the unix mode is copied and not checked, for example the file CRC.
///
/// ```no_run
/// use std::io::{Read, Seek, Write};
/// use zip::{DateTime, ZipArchive, ZipWriter};
///
/// fn copy<R, W>(src: &mut ZipArchive<R>, dst: &mut ZipWriter<W>) -> zip::result::ZipResult<()>
/// where
/// R: Read + Seek,
/// W: Write + Seek,
/// {
/// // Retrieve file entry by name
/// let file = src.by_name("src_file.txt")?;
///
/// // Copy the previously obtained file entry to the destination zip archive
/// dst.raw_copy_file_touch(file, DateTime::default(), Some(0o644))?;
///
/// Ok(())
/// }
/// ```
pub fn raw_copy_file_touch(
&mut self,
file: ZipFile,
last_modified_time: DateTime,
unix_mode: Option<u32>,
) -> ZipResult<()> {
let name = file.name().to_owned();
let mut options = SimpleFileOptions::default()
.large_file(file.compressed_size().max(file.size()) > spec::ZIP64_BYTES_THR)
.last_modified_time(last_modified_time)
.compression_method(file.compression());
if let Some(perms) = unix_mode {
options = options.unix_permissions(perms);
}
Self::normalize_options(&mut options);
self.raw_copy_file_rename_internal(file, name, options)
}
/// Add a directory entry.
///
/// As directories have no content, you must not call [`ZipWriter::write`] before adding a new file.