git.r.bdr.sh - rbdr/page/blob - src/file_handler/file_strategies/gemini.rs

   1 pub struct Strategy {}
   2
   3 use std::path::PathBuf;
   4 use std::io::Write;
   5 use std::fs::{create_dir_all, read_to_string, File as IOFile};
   6
   7 use crate::file_handler::{File, FileType, FileHandlerStrategy};
   8 use crate::gemini_parser::parse;
   9
  10 impl Strategy {
  11     fn is_title(&self, line: &str) -> bool {
  12         line.starts_with("--- title:")
  13     }
  14
  15     fn is_description(&self, line: &str) -> bool {
  16         line.starts_with("--- description:")
  17     }
  18
  19     fn get_title<'a>(&self, line: &'a str) -> &'a str {
  20         line.split_once("--- title:").unwrap().1
  21     }
  22
  23     fn get_description<'a>(&self, line: &'a str) -> &'a str {
  24         line.split_once("--- description:").unwrap().1
  25     }
  26 }
  27
  28 impl FileHandlerStrategy for Strategy {
  29     fn is(&self, path: &PathBuf) -> bool {
  30         if let Some(extension) = path.extension() {
  31             return !path.is_dir() && extension == "gmi"
  32         }
  33         false
  34     }
  35
  36     fn identify(&self) -> FileType {
  37         FileType::Gemini
  38     }
  39
  40     fn can_handle(&self, file_type: &FileType) -> bool {
  41         match file_type {
  42             FileType::Gemini => true,
  43             _ => false,
  44         }
  45     }
  46
  47     fn handle(&self, source: &PathBuf, destination: &PathBuf, file: &File, layout: &String) {
  48         let gemini_contents = read_to_string(&file.path).unwrap();
  49
  50         // Front matter extraction
  51         let lines: Vec<&str> = gemini_contents.split("\n").collect();
  52         let mut lines_found = 0;
  53         let mut title = "";
  54         let mut description = "";
  55         for line in lines[..2].iter() {
  56             if self.is_title(&line) {
  57                 title = self.get_title(&line).trim();
  58                 lines_found = lines_found + 1;
  59                 continue;
  60             }
  61             if self.is_description(&line) {
  62                 description = self.get_description(&line).trim();
  63                 lines_found = lines_found + 1;
  64                 continue;
  65             }
  66         }
  67
  68         let gemini_source = lines[lines_found..].join("\n");
  69         let content_html = parse(&gemini_source[..]);
  70
  71         let generated_html = layout
  72             .replace("{{ title }}", title)
  73             .replace("{{ description }}", description)
  74             .replace("{{ content }}", &content_html[..]);
  75
  76
  77         let relative_path = file.path.strip_prefix(&source).unwrap();
  78         let mut complete_destination = destination.join(relative_path);
  79         complete_destination.set_extension("html");
  80         let destination_parent = complete_destination.parent().unwrap();
  81         create_dir_all(destination_parent).unwrap();
  82
  83         let mut destination_file = IOFile::create(&complete_destination).unwrap();
  84         destination_file.write_all(generated_html.as_bytes()).unwrap();
  85     }
  86 }