mdbook/renderer/
markdown_renderer.rs

1use crate::book::BookItem;
2use crate::errors::*;
3use crate::renderer::{RenderContext, Renderer};
4use crate::utils;
5use log::trace;
6use std::fs;
7
8#[derive(Default)]
9/// A renderer to output the Markdown after the preprocessors have run. Mostly useful
10/// when debugging preprocessors.
11pub struct MarkdownRenderer;
12
13impl MarkdownRenderer {
14    /// Create a new `MarkdownRenderer` instance.
15    pub fn new() -> Self {
16        MarkdownRenderer
17    }
18}
19
20impl Renderer for MarkdownRenderer {
21    fn name(&self) -> &str {
22        "markdown"
23    }
24
25    fn render(&self, ctx: &RenderContext) -> Result<()> {
26        let destination = &ctx.destination;
27        let book = &ctx.book;
28
29        if destination.exists() {
30            utils::fs::remove_dir_content(destination)
31                .with_context(|| "Unable to remove stale Markdown output")?;
32        }
33
34        trace!("markdown render");
35        for item in book.iter() {
36            if let BookItem::Chapter(ref ch) = *item {
37                if !ch.is_draft_chapter() {
38                    utils::fs::write_file(
39                        &ctx.destination,
40                        &ch.path.as_ref().expect("Checked path exists before"),
41                        ch.content.as_bytes(),
42                    )?;
43                }
44            }
45        }
46
47        fs::create_dir_all(&destination)
48            .with_context(|| "Unexpected error when constructing destination path")?;
49
50        Ok(())
51    }
52}
mdbook/renderer/markdown_renderer.rs

mdbook/renderer/
markdown_renderer.rs
