mcat 0.4.2

a powerfull extended cat command, to cat all the things you couldn't before
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149

pub mod html_preprocessor;
pub mod image_preprocessor;
pub mod render;
pub mod themes;
pub mod utils;

use comrak::{
    Arena, ComrakOptions, ComrakPlugins, markdown_to_html_with_plugins,
    plugins::syntect::SyntectAdapterBuilder,
};
use image_preprocessor::ImagePreprocessor;
use rasteroid::term_misc::{self, break_size_string};
use render::{AnsiContext, RESET, parse_node};
use syntect::{highlighting::ThemeSet, parsing::SyntaxSet};
use themes::CustomTheme;
use utils::limit_newlines;

use crate::{UnwrapOrExit, config::McatConfig};
use std::path::Path;

pub fn md_to_ansi(md: &str, config: &McatConfig, markdown_file_path: Option<&Path>) -> String {
    let res = &html_preprocessor::process(md);
    let md = &res.content;

    let arena = Arena::new();
    let opts = comrak_options();
    let root = comrak::parse_document(&arena, md, &opts);

    // changing to forced inline in case of images rendered
    let _ = term_misc::init_wininfo(
        &break_size_string(&config.inline_options.spx).unwrap_or_exit(),
        &break_size_string(&config.inline_options.spx).unwrap_or_exit(),
        config.inline_options.scale,
        config.is_tmux,
        true,
    );

    let ps = SyntaxSet::load_defaults_newlines();
    let theme = CustomTheme::from(config.theme.as_ref());
    let image_preprocessor = ImagePreprocessor::new(root, config, markdown_file_path);
    let mut ctx = AnsiContext {
        ps,
        theme,
        hide_line_numbers: config.no_linenumbers,
        centered_lines: &res.centered_lines,
        term_width: term_misc::get_wininfo().sc_width as usize,
        image_preprocessor: &image_preprocessor,

        blockquote_fenced_offset: None,
        is_multi_block_quote: false,
        paragraph_collecting_line: None,
        collecting_depth: 0,
        under_header: false,
        force_simple_code_block: 0,
        list_depth: 0,
    };

    let mut output = String::new();
    output.push_str(&ctx.theme.foreground.fg);
    output.push_str(&parse_node(root, &mut ctx).trim_matches('\n'));

    // making sure its wrapped to fit into the termianl size
    let lines: Vec<String> = textwrap::wrap(&output, term_misc::get_wininfo().sc_width as usize)
        .into_iter()
        .map(|cow| cow.into_owned())
        .collect();
    let res = lines
        .join("\n")
        .replace(RESET, &format!("{RESET}{}", &ctx.theme.foreground.fg));

    // force at max 2 \n at a row (we're adding newlines based on sourcepos)
    let mut res = limit_newlines(&res).to_string();

    // replace images
    for (_, img) in image_preprocessor.mapper {
        img.insert_into_text(&mut res);
    }
    res
}

pub fn md_to_html(markdown: &str, style: Option<&str>) -> String {
    let options = comrak_options();

    let theme = CustomTheme::from(style.unwrap_or_default());
    let mut theme_set = ThemeSet::load_defaults();
    let mut plugins = ComrakPlugins::default();
    theme_set
        .themes
        .insert("dark".to_string(), theme.to_syntect_theme());
    let adapter = SyntectAdapterBuilder::new()
        .theme("dark")
        .theme_set(theme_set)
        .build();
    if style.is_some() {
        plugins.render.codefence_syntax_highlighter = Some(&adapter);
    }

    let full_css = match style {
        Some(_) => Some(theme.to_html_style()),
        None => None,
    };

    let html = markdown_to_html_with_plugins(markdown, &options, &plugins);
    match full_css {
        Some(css) => format!(
            r#"
<!DOCTYPE html>
<html>
<head>
  <meta charset="utf-8">
  <style>{}</style>
</head>
<body>
  {}
</body>
</html>
"#,
            css, html
        ),
        None => html,
    }
}

fn comrak_options<'a>() -> ComrakOptions<'a> {
    let mut options = ComrakOptions::default();
    // ➕ Enable extensions
    options.extension.strikethrough = true;
    options.extension.footnotes = true;
    options.extension.superscript = true;
    options.extension.tagfilter = true;
    options.extension.table = true;
    options.extension.autolink = true;
    options.extension.tasklist = true;
    options.extension.description_lists = true;
    options.extension.math_code = true;
    options.extension.alerts = true;
    options.extension.wikilinks_title_after_pipe = true;
    options.extension.spoiler = true;
    options.extension.multiline_block_quotes = true;
    options.parse.relaxed_tasklist_matching = true;

    // 🎯 Parsing options
    options.parse.smart = true;

    // 💄 Render options
    options.render.unsafe_ = true;

    options
}