mdbook_journal/mdbook/preprocessor/
naive.rs

1use super::prelude::*;
2use crate::prelude::*;
3
4pub struct NaivePreprocessor<T>
5where
6    T: JournalLoaderTrait,
7{
8    journal: Journal<T>,
9}
10
11impl<T> NaivePreprocessor<T>
12where
13    T: JournalLoaderTrait,
14{
15    pub fn new<J>(journal: J) -> Self
16    where
17        J: Into<Journal<T>>,
18    {
19        Self {
20            journal: journal.into(),
21        }
22    }
23}
24
25impl<T> Preprocessor for NaivePreprocessor<T>
26where
27    T: JournalLoaderTrait,
28{
29    fn name(&self) -> &str {
30        "Naive Journal Preprocessor"
31    }
32
33    fn run(&self, _ctx: &PreprocessorContext, mut book: Book) -> Result<Book> {
34        let journal = &self.journal;
35        let writing = &mut book;
36
37        for topic in journal.each_topic() {
38            let mut entries = journal.entries_for_topic(&topic.name())?;
39            entries.sort_by(|a, b| b.created_at().cmp(a.created_at()));
40            let book = topic_chapter(topic, &entries);
41            writing.push_item(book);
42        }
43
44        Ok(book)
45    }
46}
47
48fn topic_chapter(topic: &Topic, entries: &[Entry]) -> BookItem {
49    let sub_items = entries.iter().map(|e| entry_chapter(topic, e)).collect();
50
51    BookItem::Chapter(Chapter {
52        sub_items,
53        name: topic.name().to_owned(),
54        ..Default::default()
55    })
56}
57
58fn entry_chapter(topic: &Topic, entry: &Entry) -> BookItem {
59    let name = match entry.meta_value(&"title") {
60        Some(MetaValue::String(title)) => title.to_owned(),
61        _ => String::from("Untitled"),
62    };
63    let content = entry.content().to_owned();
64
65    BookItem::Chapter(Chapter {
66        name,
67        content,
68        path: topic.virtual_path(entry).ok(),
69        source_path: entry.file_location().cloned(),
70        ..Default::default()
71    })
72}
mdbook_journal/mdbook/preprocessor/naive.rs

mdbook_journal/mdbook/preprocessor/
naive.rs
