Struct SparseFileWriter 

pub struct SparseFileWriter {
    pub chunks: Vec<Chunk>,
}

An in-memory description of an Android sparse image file.

Holds a sequence of Chunk definitions that describe how unsparsed image data should be formatted or partitioned. Can be serialized to a destination writer or lazily read via a SparseSliceReader.

Fields

chunks: Vec<Chunk>

The sequence of chunks that make up the sparse image.

Implementations

impl SparseFileWriter

pub fn new(chunks: Vec<Chunk>) -> SparseFileWriter

Creates a new SparseFileWriter from a sequence of Chunks.

pub fn total_blocks(&self) -> u32

Returns the total number of blocks represented by all chunks in this sparse image.

pub fn total_bytes(&self) -> u64

Returns the total unsparsed size in bytes represented by this sparse image.

pub fn file_size(&self) -> u64

Returns the total serialized size (in bytes) of the sparse image file, including the file header, all chunk headers, and chunk payloads.

pub fn slice_reader<'a, R: Read + Seek>( &'a self, source: &'a mut R, ) -> Result<SparseSliceReader<'a, R>, SparseError>

Creates an io::Read stream that lazily reads the serialized sparse image bytes directly from source without creating an intermediate file on disk.

Errors

Returns SparseError::UnalignedChunk if any chunk is not aligned to the block size, or SparseError::Serialize if header serialization fails.

pub fn write<W: Write + Seek, R: Read + Seek>( &self, reader: &mut R, writer: &mut W, ) -> Result<(), SparseError>

Writes the serialized sparse image to writer, reading raw payload data from reader.

Errors

Returns an error if writing to writer or seeking/reading from reader fails, or if any chunk is invalid or cannot be serialized.

Trait Implementations

impl Clone for SparseFileWriter

fn clone(&self) -> SparseFileWriter

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for SparseFileWriter

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

Formats the value using the given formatter.

impl Display for SparseFileWriter

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

Formats the value using the given formatter.

impl PartialEq for SparseFileWriter

fn eq(&self, other: &SparseFileWriter) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl StructuralPartialEq for SparseFileWriter