probe.rs

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//! 組み上げの途中を覗く。ページ数と、そのページに何が乗ったかを出す
//!
//! 使い方: cargo run --example probe -- 文書.tex [和文の書体]

use hongo::layout::Block;
use hongo::style::Style;
use std::path::Path;


fn main() {
    let argument: Vec<String> = std::env::args().skip(1).collect();
    let path = argument.first().expect("読む文書を書いてください");
    let source = std::fs::read_to_string(path).expect("読めません");
    let base = Path::new(path).parent().unwrap_or(Path::new(".")).to_path_buf();
    let japanese = argument.get(1).map(std::path::PathBuf::from);
    let library = hongo::font::open(
        Path::new("font/latinmodern-math.otf"),
        None,
        None,
        None,
        None,
        None,
        japanese.as_deref(),
    )
    .expect("書体");
    let characters: Vec<char> = source.chars().collect();
    let mut document = hongo::parse::parse(&characters).expect("読み取り");
    let mut numbering = hongo::number::assign(&mut document);
    let style = Style::default();

    for round in 1..=3 {
        let (block, _, _) =
            hongo::layout::build(&document, &library, &style, &numbering, &base).expect("組み上げ");
        let count = block
            .iter()
            .filter(|one| matches!(one, Block::Content {..}))
            .count();
        let (page, _) = hongo::page::paginate(&block, &library, &style, &mut numbering);
        println!("{round} 回目: {} ページ, 中身の行 {count}", page.len());
    }
}