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extern crate tempfile;
use std::process;
use std::io::{self, Write};
#[derive(Debug)]
pub enum Error {
Io(io::Error),
Lint(String)
}
impl From<io::Error> for Error {
fn from(e: io::Error) -> Self {
Error::Io(e)
}
}
pub struct Verifier {
dtd_tempfile: tempfile::NamedTempFile
}
impl Verifier {
pub fn new() -> io::Result<Self> {
let mut dtd_tempfile = tempfile::NamedTempFile::new()?;
dtd_tempfile.write_all(include_bytes!("svg11-flat.dtd"))?;
Ok(Verifier { dtd_tempfile })
}
pub fn verify(&self, svg_src: String) -> Result<(), Error> {
let mut child = process::Command::new("xmllint")
.arg("--noout")
.arg("--dtdvalid")
.arg(self.dtd_tempfile.path().as_os_str())
.arg("-")
.stdin(process::Stdio::piped())
.stdout(process::Stdio::null())
.stderr(process::Stdio::piped())
.spawn()
.unwrap();
let mut stdin = child.stdin.take().unwrap();
let writer = ::std::thread::spawn(move || {
stdin.write_all(svg_src.as_bytes())
});
let output = child.wait_with_output()?;
writer.join().unwrap()?;
if output.status.success() {
Ok(())
} else {
Err(Error::Lint(String::from_utf8_lossy(&output.stderr).to_string()))
}
}
}