use visitor::ModelVisitor;
use std::io::Cursor;
use visitor::Executor;
use errors::*;
use visitor::*;
use STR_ARSC;
use std::io::Read;
pub struct BufferedDecoder {
buffer: Box<[u8]>,
}
impl From<Vec<u8>> for BufferedDecoder {
fn from(buffer: Vec<u8>) -> BufferedDecoder {
BufferedDecoder { buffer: buffer.into_boxed_slice() }
}
}
impl From<Box<[u8]>> for BufferedDecoder {
fn from(buffer: Box<[u8]>) -> BufferedDecoder {
BufferedDecoder { buffer: buffer }
}
}
impl BufferedDecoder {
pub fn from_read<R: Read>(mut read: R) -> Result<BufferedDecoder> {
let mut buffer = Vec::new();
read.read_to_end(&mut buffer).chain_err(|| "could not read buffer")?;
Ok(BufferedDecoder { buffer: buffer.into_boxed_slice() })
}
pub fn get_decoder(&self) -> Result<Decoder> {
Decoder::new(&self.buffer)
}
}
pub struct Decoder<'a> {
visitor: ModelVisitor<'a>,
buffer_android: &'a [u8],
buffer_apk: &'a [u8],
}
impl<'a> Decoder<'a> {
pub fn new(data: &'a [u8]) -> Result<Decoder<'a>> {
let visitor = ModelVisitor::default();
let mut decoder = Decoder {
visitor: visitor,
buffer_android: STR_ARSC,
buffer_apk: data,
};
Executor::arsc(decoder.buffer_android, &mut decoder.visitor)
.chain_err(|| "Could not read android lib resources")?;
Executor::arsc(decoder.buffer_apk, &mut decoder.visitor)
.chain_err(|| "Could not read target APK resources")?;
Ok(decoder)
}
pub fn get_resources(&self) -> &'a Resources {
self.visitor.get_resources()
}
pub fn xml_visitor<T: AsRef<[u8]>>(&self, content: &'a T) -> Result<XmlVisitor> {
let cursor = Cursor::new(content.as_ref());
let mut visitor = XmlVisitor::new(self.get_resources());
Executor::xml(cursor, &mut visitor)?;
Ok(visitor)
}
}
#[cfg(test)]
mod tests {
use super::*;
use std::io::Cursor;
#[test]
fn it_can_not_decode_an_empty_binary_xml() {
let buffer = vec![2, 0, 12, 0, 0, 0, 0, 0, 0, 0, 0, 0];
let owned = BufferedDecoder::from(buffer);
let decoder = owned.get_decoder().unwrap();
let another = vec![3, 0, 0, 0, 0, 0, 0, 0];
let xml_result = decoder.xml_visitor(&another).unwrap().into_string();
assert!(xml_result.is_err());
}
#[test]
fn it_can_create_a_buffer_decoder_from_read() {
let buffer = vec![2, 0, 12, 0, 0, 0, 0, 0, 0, 0, 0, 0];
let owned = BufferedDecoder::from_read(Cursor::new(buffer)).unwrap();
let _ = owned.get_decoder().unwrap();
}
}