diff options
Diffstat (limited to 'src/gemini_parser.rs')
| -rw-r--r-- | src/gemini_parser.rs | 225 |
1 files changed, 0 insertions, 225 deletions
diff --git a/src/gemini_parser.rs b/src/gemini_parser.rs deleted file mode 100644 index 3414ea7..0000000 --- a/src/gemini_parser.rs +++ /dev/null @@ -1,225 +0,0 @@ -// TAKEN FROM PAGE. Need to move to a common source. - pub fn parse(source: &str) -> String { - - let lines = source.split("\n"); - let mut is_preformatted = false; - - let mut block_label: Option<String> = None; - let mut html: String = "".to_owned(); - let mut current_line_type: Option<LineType> = None; - - let mut heading_stack: Vec<u8> = Vec::new(); - for line in lines { - let mut line_type = LineType::Blank; - if line.char_indices().count() > 2 { - let mut end = line.len(); - if line.char_indices().count() > 3 { - end = line.char_indices().map(|(i, _)| i).nth(3).unwrap(); - } - line_type = identify_line(&line[..end], is_preformatted); - } - match line_type { - LineType::PreformattedToggle => { - is_preformatted = !is_preformatted; - if is_preformatted && line.char_indices().count() > 3 { - block_label = Some(get_partial_line_content(&line_type, line)); - } else { - block_label = None; - } - }, - _ => { - // Close previous block if needed - if let Some(line) = ¤t_line_type { - if line != &line_type && is_block(line) { - html.push_str(get_line_closer(line)); - } - } - - // Blocks - if is_block(&line_type) { - if let Some(line) = ¤t_line_type { - if line != &line_type { - html.push_str(&get_line_opener(&line_type, block_label.as_ref())); - } - } else { - html.push_str(&get_line_opener(&line_type, None)); - } - - let line_content = get_partial_line_content(&line_type, line); - html.push_str(&line_content); - } else { - html.push_str(&get_heading_wrapper(&mut heading_stack, &line_type)); - html.push_str(&get_full_line_content(&line_type, line)); - } - current_line_type = Some(line_type); - }, - } - } - if let Some(line) = ¤t_line_type { - if is_block(line) { - html.push_str(get_line_closer(line)); - } - } - html.push_str(&close_heading_wrapper(&mut heading_stack)); - html -} - -fn is_block(line_type: &LineType) -> bool { - return match line_type { - LineType::PreformattedText | LineType::ListItem | LineType::Quote => true, - _ => false, - } -} - -fn get_partial_line_content(line_type: &LineType, line: &str) -> String { - let encoded_line = line.replace("<", "<").replace(">", ">"); - return match line_type { - LineType::ListItem => format!("<li>{}</li>", encoded_line[2..].trim()), - LineType::Quote => encoded_line[1..].trim().to_string(), - LineType::PreformattedText => format!("{}\n", encoded_line), - LineType::PreformattedToggle => encoded_line[3..].trim().to_string(), - _ => "".to_string(), - } -} - -fn get_full_line_content(line_type: &LineType, line: &str) -> String { - let encoded_line = line.replace("<", "<").replace(">", ">"); - match line_type { - LineType::Text => format!("<p>{}</p>\n", encoded_line.trim()), - LineType::Blank => "<br>\n".to_string(), - LineType::Link => { - let url = get_link_address(line); - if url.starts_with("gemini:") { - format!("<div><a href=\"{}\">{}</a></div>\n", url, get_link_content(line)) - } else { - format!("<div><a href=\"{}\">{}</a></div>\n", url.replace(".gmi", ".html"), get_link_content(line)) - } - }, - LineType::Heading1 => format!("<h1>{}</h1>\n", encoded_line[1..].trim()), - LineType::Heading2 => format!("<h2>{}</h2>\n", encoded_line[2..].trim()), - LineType::Heading3 => format!("<h3>{}</h3>\n", encoded_line[3..].trim()), - _ => "".to_string(), - } -} - -fn get_heading_wrapper(heading_stack: &mut Vec<u8>, line_type: &LineType) -> String { - let mut string = String::new(); - let current_heading: u8 = match line_type { - LineType::Heading1 => 1, - LineType::Heading2 => 2, - LineType::Heading3 => 3, - _ => 255 - }; - - if current_heading < 255 { - while let Some(open_heading) = heading_stack.pop() { - // You just encountered a more important heading. - // Put it back. Desist. - if open_heading < current_heading { - heading_stack.push(open_heading); - break; - } - - string.push_str("</div>"); - - if open_heading == current_heading { - break; - } - } - heading_stack.push(current_heading); - string.push_str(&format!("<div class=\"h{}\">", current_heading)); - } - - return string; -} - -fn close_heading_wrapper(heading_stack: &mut Vec<u8>) -> String { - let mut string = String::new(); - while let Some(_open_heading) = heading_stack.pop() { - string.push_str("</div>"); - } - return string; -} - -fn get_line_opener(line_type: &LineType, block_label: Option<&String>) -> String { - match line_type { - LineType::ListItem => "<ul>".to_string(), - LineType::Quote => "<blockquote>".to_string(), - LineType::PreformattedText => { - if let Some(label) = &block_label { - return format!("<pre role=\"img\" aria-label=\"{}\">", label); - } else { - return "<pre>".to_string(); - } - }, - _ => "".to_string(), - } -} - -fn get_line_closer(line_type: &LineType) -> &'static str { - match line_type { - LineType::ListItem => "</ul>\n", - LineType::Quote => "</blockquote>\n", - LineType::PreformattedText => "</pre>\n", - _ => "", - } -} - -fn get_link_content(line: &str) -> &str { - let components: Vec<&str> = line[2..].trim().splitn(2, " ").collect(); - if components.len() > 1 { - return components[1].trim() - } - components[0].trim() -} - -fn get_link_address(line: &str) -> &str { - let components: Vec<&str> = line[2..].trim().splitn(2, " ").collect(); - components[0].trim() -} - -fn identify_line(line: &str, is_preformatted: bool) -> LineType { - if line.starts_with("```") { - return LineType::PreformattedToggle; - } - if is_preformatted { - return LineType::PreformattedText; - } - if line.is_empty() { - return LineType::Blank; - } - if line.starts_with("=>") { - return LineType::Link; - } - if line.starts_with("* ") { - return LineType::ListItem; - } - if line.starts_with(">") { - return LineType::Quote; - } - if line.starts_with("###") { - return LineType::Heading3; - } - if line.starts_with("##") { - return LineType::Heading2; - } - if line.starts_with("#") { - return LineType::Heading1; - } - - LineType::Text -} - -#[derive(PartialEq, Eq)] -enum LineType { - Text, - Blank, - Link, - PreformattedToggle, - PreformattedText, - Heading1, - Heading2, - Heading3, - ListItem, - Quote -} |