Struct ZipArchiveWriterBuilder 

pub struct ZipArchiveWriterBuilder { /* private fields */ }

Builds a ZipArchiveWriter.

Implementations

impl ZipArchiveWriterBuilder

pub fn new() -> Self

Creates a new ZipArchiveWriterBuilder.

pub fn with_capacity(self, capacity: usize) -> Self

Sets the anticipated number of files to optimize memory allocation.

pub fn with_offset(self, offset: u64) -> Self

Sets the starting offset for writing. Useful when there is prelude data prior to the zip archive.

When there is prelude data, setting the offset may not technically be required, but it is recommended. For standard zip files, many zip readers can self correct when the prelude data isn’t properly declared. However for zip64 archives, setting the correct offset is required.

Example: Appending ZIP to existing data

use std::io::{Cursor, Write, Seek, SeekFrom};

// Create a file with some prefix data
let mut output = Cursor::new(Vec::new());
output.write_all(b"This is a custom header or prefix data\n").unwrap();
let zip_start_offset = output.position();

// Create ZIP archive starting after the prefix data
let mut archive = rawzip::ZipArchiveWriter::builder()
    .with_offset(zip_start_offset)  // Tell the archive where it starts
    .build(&mut output);

// Add files normally
let mut file = archive.new_file("data.txt").create().unwrap();
let mut writer = rawzip::ZipDataWriter::new(&mut file);
writer.write_all(b"File content").unwrap();
let (_, desc) = writer.finish().unwrap();
file.finish(desc).unwrap();
archive.finish().unwrap();

// The resulting file contains both prefix data and the ZIP archive
let final_data = output.into_inner();
assert!(final_data.starts_with(b"This is a custom header"));

pub fn build<W>(&self, writer: W) -> ZipArchiveWriter<W>

Builds a ZipArchiveWriter that writes to writer.

Trait Implementations

impl Debug for ZipArchiveWriterBuilder

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for ZipArchiveWriterBuilder

fn default() -> ZipArchiveWriterBuilder

Returns the “default value” for a type.