71 lines
2.3 KiB
Rust
71 lines
2.3 KiB
Rust
// Copyright 2014 The Rust Project Developers. See the COPYRIGHT
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// file at the top-level directory of this distribution and at
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// http://rust-lang.org/COPYRIGHT.
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//
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// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
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// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
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// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
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// option. This file may not be copied, modified, or distributed
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// except according to those terms.
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use std::{io, str};
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#[deriving(Clone)]
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pub struct ExternalHtml{
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pub in_header: String,
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pub before_content: String,
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pub after_content: String
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}
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impl ExternalHtml {
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pub fn load(in_header: &[String], before_content: &[String], after_content: &[String])
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-> Option<ExternalHtml> {
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match (load_external_files(in_header),
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load_external_files(before_content),
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load_external_files(after_content)) {
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(Some(ih), Some(bc), Some(ac)) => Some(ExternalHtml {
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in_header: ih,
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before_content: bc,
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after_content: ac
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}),
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_ => None
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}
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}
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}
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pub fn load_string(input: &Path) -> io::IoResult<Option<String>> {
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let mut f = try!(io::File::open(input));
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let d = try!(f.read_to_end());
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Ok(str::from_utf8(d.as_slice()).map(|s| s.to_string()))
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}
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macro_rules! load_or_return {
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($input: expr, $cant_read: expr, $not_utf8: expr) => {
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{
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let input = Path::new($input);
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match ::externalfiles::load_string(&input) {
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Err(e) => {
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let _ = writeln!(&mut io::stderr(),
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"error reading `{}`: {}", input.display(), e);
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return $cant_read;
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}
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Ok(None) => {
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let _ = writeln!(&mut io::stderr(),
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"error reading `{}`: not UTF-8", input.display());
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return $not_utf8;
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}
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Ok(Some(s)) => s
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}
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}
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}
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}
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pub fn load_external_files(names: &[String]) -> Option<String> {
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let mut out = String::new();
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for name in names.iter() {
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out.push_str(load_or_return!(name.as_slice(), None, None).as_slice());
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out.push('\n');
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}
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Some(out)
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}
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