1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
|
// Copyright 2013 The Rust Project Developers. See the COPYRIGHT
// file at the top-level directory of this distribution and at
// http://rust-lang.org/COPYRIGHT.
//
// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
// option. This file may not be copied, modified, or distributed
// except according to those terms.
use std::fmt;
use std::rt::io::Reader;
use std::rt::io::pipe::PipeStream;
use std::rt::io::process::{ProcessConfig, Process, CreatePipe};
use std::rt::io;
pub struct Markdown<'self>(&'self str);
impl<'self> fmt::Default for Markdown<'self> {
fn fmt(md: &Markdown<'self>, fmt: &mut fmt::Formatter) {
if md.len() == 0 { return; }
// Create the pandoc process
do io::io_error::cond.trap(|err| {
fail2!("Error executing `pandoc`: {}", err.desc);
}).inside {
let io = ~[CreatePipe(PipeStream::new().unwrap(), true, false),
CreatePipe(PipeStream::new().unwrap(), false, true)];
let args = ProcessConfig {
program: "pandoc",
args: [],
env: None,
cwd: None,
io: io,
};
let mut p = Process::new(args).expect("couldn't fork for pandoc");
// Write the markdown to stdin and close it.
p.io[0].get_mut_ref().write(md.as_bytes());
p.io[0] = None;
// Ferry the output from pandoc over to the destination buffer.
let mut buf = [0, ..1024];
loop {
match p.io[1].get_mut_ref().read(buf) {
None | Some(0) => { break }
Some(n) => {
fmt.buf.write(buf.slice_to(n));
}
}
}
}
}
}
|
