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//
// imag - the personal information management suite for the commandline
// Copyright (C) 2015, 2016 Matthias Beyer <mail@beyermatthias.de> and contributors
//
// This library is free software; you can redistribute it and/or
// modify it under the terms of the GNU Lesser General Public
// License as published by the Free Software Foundation; version
// 2.1 of the License.
//
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
// Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public
// License along with this library; if not, write to the Free Software
// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
//
use hoedown::{Markdown, Html as MdHtml};
use hoedown::renderer::html::Flags as HtmlFlags;
use hoedown::renderer::Render;
use result::Result;
use error::MarkdownErrorKind;
use error::ResultExt;
pub type HTML = String;
pub fn to_html(buffer: &str) -> Result<HTML> {
let md = Markdown::new(buffer);
let mut html = MdHtml::new(HtmlFlags::empty(), 0);
html.render(&md)
.to_str()
.map(String::from)
.chain_err(|| MarkdownErrorKind::MarkdownRenderError)
}
pub mod iter {
use result::Result;
use libimagstore::store::Entry;
use super::HTML;
use super::to_html;
pub struct ToHtmlIterator<I: Iterator<Item = Entry>> {
i: I
}
impl<I: Iterator<Item = Entry>> ToHtmlIterator<I> {
pub fn new(i: I) -> ToHtmlIterator<I> {
ToHtmlIterator { i: i }
}
}
impl<I: Iterator<Item = Entry>> Iterator for ToHtmlIterator<I> {
type Item = Result<HTML>;
fn next(&mut self) -> Option<Self::Item> {
self.i.next().map(|entry| to_html(&entry.get_content()[..]))
}
}
impl<I: Iterator<Item = Entry>> From<I> for ToHtmlIterator<I> {
fn from(obj: I) -> ToHtmlIterator<I> {
ToHtmlIterator::new(obj)
}
}
/// Iterate over `(Entry, Result<HTML>)` tuples
pub struct WithHtmlIterator<I: Iterator<Item = Entry>> {
i: I
}
impl<I: Iterator<Item = Entry>> WithHtmlIterator<I> {
pub fn new(i: I) -> WithHtmlIterator<I> {
WithHtmlIterator { i: i }
}
}
impl<I: Iterator<Item = Entry>> Iterator for WithHtmlIterator<I> {
type Item = (Entry, Result<HTML>);
fn next(&mut self) -> Option<Self::Item> {
self.i.next().map(|entry| {
let html = to_html(&entry.get_content()[..]);
(entry, html)
})
}
}
}
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