mdBook/src/renderer/markdown_renderer.rs

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Rust
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use crate::book::BookItem;
use crate::errors::*;
use crate::renderer::{RenderContext, Renderer};
use crate::utils;
use std::fs;
#[derive(Default)]
/// A renderer to output the Markdown after the preprocessors have run. Mostly useful
/// when debugging preprocessors.
pub struct MarkdownRenderer;
impl MarkdownRenderer {
/// Create a new `MarkdownRenderer` instance.
pub fn new() -> Self {
MarkdownRenderer
}
}
impl Renderer for MarkdownRenderer {
fn name(&self) -> &str {
"markdown"
}
fn render(&self, ctx: &RenderContext) -> Result<()> {
let destination = &ctx.destination;
let book = &ctx.book;
if destination.exists() {
utils::fs::remove_dir_content(destination)
.chain_err(|| "Unable to remove stale Markdown output")?;
}
trace!("markdown render");
for item in book.iter() {
if let BookItem::Chapter(ref ch) = *item {
utils::fs::write_file(&ctx.destination, &ch.path, ch.content.as_bytes())?;
}
}
fs::create_dir_all(&destination)
.chain_err(|| "Unexpected error when constructing destination path")?;
Ok(())
}
}