5956092b4b
This switches all public types to use non_exhaustive to make it easier to make additions without a semver-breaking change. Some of the ergonomics are hampered due to the lack of exhaustiveness checking. Hopefully some day in the future, non_exhaustive_omitted_patterns_lint or something like it will get stabilized. Closes https://github.com/rust-lang/mdBook/issues/1835
53 lines
1.5 KiB
Rust
53 lines
1.5 KiB
Rust
use anyhow::{Context, Result};
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use log::trace;
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use mdbook_core::book::BookItem;
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use mdbook_core::utils;
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use mdbook_renderer::{RenderContext, Renderer};
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use std::fs;
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/// A renderer to output the Markdown after the preprocessors have run. Mostly useful
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/// when debugging preprocessors.
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#[derive(Default)]
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#[non_exhaustive]
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pub struct MarkdownRenderer;
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impl MarkdownRenderer {
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/// Create a new `MarkdownRenderer` instance.
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pub fn new() -> Self {
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MarkdownRenderer
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}
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}
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impl Renderer for MarkdownRenderer {
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fn name(&self) -> &str {
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"markdown"
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}
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fn render(&self, ctx: &RenderContext) -> Result<()> {
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let destination = &ctx.destination;
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let book = &ctx.book;
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if destination.exists() {
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utils::fs::remove_dir_content(destination)
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.with_context(|| "Unable to remove stale Markdown output")?;
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}
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trace!("markdown render");
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for item in book.iter() {
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if let BookItem::Chapter(ref ch) = *item {
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if !ch.is_draft_chapter() {
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utils::fs::write_file(
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&ctx.destination,
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ch.path.as_ref().expect("Checked path exists before"),
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ch.content.as_bytes(),
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)?;
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}
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}
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}
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fs::create_dir_all(destination)
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.with_context(|| "Unexpected error when constructing destination path")?;
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Ok(())
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}
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}
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