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Fast and extensible Markdown for Elixir
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Files
native/comrak_nif/src/autumnus_adapter.rs
use autumnus::formatter::{HtmlInlineBuilder, HtmlLinkedBuilder, TerminalBuilder};
use autumnus::languages::Language;
use autumnus::FormatterOption;
use comrak::adapters::SyntaxHighlighterAdapter;
use std::collections::HashMap;
use std::io::{self, Write};
#[derive(Default)]
pub struct AutumnusAdapter<'a> {
formatter: FormatterOption<'a>,
}
impl<'a> AutumnusAdapter<'a> {
pub fn new(formatter: FormatterOption<'a>) -> Self {
Self { formatter }
}
}
impl SyntaxHighlighterAdapter for AutumnusAdapter<'_> {
fn write_pre_tag(
&self,
output: &mut dyn Write,
_attributes: HashMap<String, String>,
) -> io::Result<()> {
match &self.formatter {
FormatterOption::HtmlInline {
theme,
pre_class,
italic,
include_highlights,
highlight_lines,
header,
} => {
let mut formatter = HtmlInlineBuilder::new()
.italic(*italic)
.include_highlights(*include_highlights);
if let Some(theme) = theme {
formatter = formatter.theme(theme);
}
if let Some(pre_class) = pre_class {
formatter = formatter.pre_class(pre_class);
}
if let Some(highlight_lines) = highlight_lines {
formatter = formatter.highlight_lines(highlight_lines.clone());
}
if let Some(header) = header {
formatter = formatter.header(header.clone());
}
formatter.build().open_pre_tag(output)
}
FormatterOption::HtmlLinked {
pre_class,
highlight_lines,
header,
} => {
let mut formatter = HtmlLinkedBuilder::new();
if let Some(pre_class) = pre_class {
formatter = formatter.pre_class(pre_class);
}
if let Some(highlight_lines) = highlight_lines {
formatter = formatter.highlight_lines(highlight_lines.clone());
}
if let Some(header) = header {
formatter = formatter.header(header.clone());
}
formatter.build().open_pre_tag(output)
}
FormatterOption::Terminal { .. } => Ok(()),
}
}
fn write_code_tag(
&self,
output: &mut dyn Write,
attributes: HashMap<String, String>,
) -> io::Result<()> {
let plaintext = "language-plaintext".to_string();
let language = attributes.get("class").unwrap_or(&plaintext);
let split: Vec<&str> = language.split('-').collect();
let language = split.get(1).unwrap_or(&"plaintext");
let lang: Language = Language::guess(language, "");
match &self.formatter {
FormatterOption::HtmlInline {
theme,
pre_class,
italic,
include_highlights,
highlight_lines,
header,
} => {
let mut formatter = HtmlInlineBuilder::new()
.italic(*italic)
.include_highlights(*include_highlights)
.lang(lang);
if let Some(theme) = theme {
formatter = formatter.theme(theme);
}
if let Some(pre_class) = pre_class {
formatter = formatter.pre_class(pre_class);
}
if let Some(highlight_lines) = highlight_lines {
formatter = formatter.highlight_lines(highlight_lines.clone());
}
if let Some(header) = header {
formatter = formatter.header(header.clone());
}
formatter.build().open_code_tag(output)
}
FormatterOption::HtmlLinked {
pre_class,
highlight_lines,
header,
} => {
let mut formatter = HtmlLinkedBuilder::new().lang(lang);
if let Some(pre_class) = pre_class {
formatter = formatter.pre_class(pre_class);
}
if let Some(highlight_lines) = highlight_lines {
formatter = formatter.highlight_lines(highlight_lines.clone());
}
if let Some(header) = header {
formatter = formatter.header(header.clone());
}
formatter.build().open_code_tag(output)
}
FormatterOption::Terminal { .. } => Ok(()),
}
}
fn write_highlighted(
&self,
output: &mut dyn Write,
lang: Option<&str>,
source: &str,
) -> io::Result<()> {
let lang: Language = Language::guess(lang.unwrap_or("plaintext"), source);
match &self.formatter {
FormatterOption::HtmlInline {
theme,
pre_class,
italic,
include_highlights,
highlight_lines,
header,
} => {
let mut formatter = HtmlInlineBuilder::new()
.italic(*italic)
.include_highlights(*include_highlights)
.lang(lang)
.source(source);
if let Some(theme) = theme {
formatter = formatter.theme(theme);
}
if let Some(pre_class) = pre_class {
formatter = formatter.pre_class(pre_class);
}
if let Some(highlight_lines) = highlight_lines {
formatter = formatter.highlight_lines(highlight_lines.clone());
}
if let Some(header) = header {
formatter = formatter.header(header.clone());
}
formatter.build().highlights(output)
}
FormatterOption::HtmlLinked {
pre_class,
highlight_lines,
header,
} => {
let mut formatter = HtmlLinkedBuilder::new().lang(lang).source(source);
if let Some(pre_class) = pre_class {
formatter = formatter.pre_class(pre_class);
}
if let Some(highlight_lines) = highlight_lines {
formatter = formatter.highlight_lines(highlight_lines.clone());
}
if let Some(header) = header {
formatter = formatter.header(header.clone());
}
formatter.build().highlights(output)
}
FormatterOption::Terminal { theme } => {
let mut formatter = TerminalBuilder::new().lang(lang).source(source);
if let Some(theme) = theme {
formatter = formatter.theme(theme);
}
formatter.build().highlights(output)
}
}
}
}