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extern crate walkdir;
use std::fs::File;
use std::io::prelude::*;
use std::path::Path;
use walkdir::WalkDir;
#[derive(Debug)]
pub enum Error {
Io(std::io::Error),
StripPrefix(std::path::StripPrefixError),
WalkDir(walkdir::Error),
}
pub fn is_different<A: AsRef<Path>, B: AsRef<Path>>(a_base: A, b_base: B) -> Result<bool, Error> {
let a_base = a_base.as_ref();
let b_base = b_base.as_ref();
for entry in WalkDir::new(a_base) {
let entry = entry?;
let a = entry.path();
let no_prefix = a.strip_prefix(a_base)?;
let b = b_base.join(no_prefix);
if a.is_dir() {
if b.is_dir() {
continue;
} else {
return Ok(false)
}
}
let a_text = read_to_vec(a)?;
let b_text = read_to_vec(b)?;
if a_text != b_text {
return Ok(true);
}
}
Ok(false)
}
fn read_to_vec<P: AsRef<Path>>(file: P) -> Result<Vec<u8>, std::io::Error> {
let mut data = Vec::new();
let mut file = File::open(file.as_ref())?;
file.read_to_end(&mut data)?;
Ok(data)
}
impl From<std::io::Error> for Error {
fn from(e: std::io::Error) -> Error {
Error::Io(e)
}
}
impl From<std::path::StripPrefixError> for Error {
fn from(e: std::path::StripPrefixError) -> Error {
Error::StripPrefix(e)
}
}
impl From<walkdir::Error> for Error {
fn from(e: walkdir::Error) -> Error {
Error::WalkDir(e)
}
}