use crate::pack::data;use filebuffer::FileBuffer;use git_object::SHA1_SIZE;use std::{convert::TryFrom, convert::TryInto, path::Path};/// Instantiationimpl data::File { pub fn at(path: impl AsRef<Path>) -> Result<data::File, data::parse::Error> { data::File::try_from(path.as_ref()) }}impl TryFrom<&Path> for data::File { type Error = data::parse::Error; fn try_from(path: &Path) -> Result<Self, Self::Error> { use data::parse::N32_SIZE; let data = FileBuffer::open(path).map_err(|e| data::parse::Error::Io { source: e, path: path.to_owned(), })?; let pack_len = data.len(); if pack_len < N32_SIZE * 3 + SHA1_SIZE { return Err(data::parse::Error::Corrupt(format!( "Pack data of size {} is too small for even an empty pack", pack_len ))); } let (kind, num_objects) = data::parse::header(&data[..12].try_into().expect("enough data after previous check"))?; Ok(data::File { data, path: path.to_owned(), kind, num_objects, }) }}
use crate::pack::data;
use filebuffer::FileBuffer;
use git_object::SHA1_SIZE;
use std::{convert::TryFrom, convert::TryInto, path::Path};
/// Instantiation
impl data::File {
pub fn at(path: impl AsRef<Path>) -> Result<data::File, data::parse::Error> {
data::File::try_from(path.as_ref())
}
}
impl TryFrom<&Path> for data::File {
type Error = data::parse::Error;
fn try_from(path: &Path) -> Result<Self, Self::Error> {
use data::parse::N32_SIZE;
let data = FileBuffer::open(path).map_err(|e| data::parse::Error::Io {
source: e,
path: path.to_owned(),
})?;
let pack_len = data.len();
if pack_len < N32_SIZE * 3 + SHA1_SIZE {
return Err(data::parse::Error::Corrupt(format!(
"Pack data of size {} is too small for even an empty pack",
pack_len
)));
}
let (kind, num_objects) =
data::parse::header(&data[..12].try_into().expect("enough data after previous check"))?;
Ok(data::File {
data,
path: path.to_owned(),
kind,
num_objects,
})
}
}