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

   1 mod file_strategies;
   2
   3 use file_strategies::file::Strategy as FileStrategy;
   4 use file_strategies::gemini::Strategy as GeminiStrategy;
   5 use file_strategies::layout::Strategy as LayoutStrategy;
   6
   7 use std::path::PathBuf;
   8 use std::fs::read_to_string;
   9
  10 pub struct FileHandler {
  11    pub strategies: Vec<Box<dyn FileHandlerStrategy>>,
  12    pub layout: Option<String>
  13 }
  14
  15 impl Default for FileHandler {
  16     fn default() -> FileHandler {
  17         FileHandler {
  18             strategies: vec![
  19                 Box::new(GeminiStrategy{}),
  20                 Box::new(LayoutStrategy{}),
  21                 Box::new(FileStrategy{}),
  22             ],
  23             layout: None
  24         }
  25     }
  26 }
  27
  28 impl FileHandler {
  29     pub fn identify(&self, path: &PathBuf) -> FileType {
  30         for strategy in self.strategies.iter() {
  31             if strategy.is(&path) {
  32                 return strategy.identify();
  33             }
  34         }
  35         FileType::Unknown
  36     }
  37
  38     pub fn get_layout_or_panic(&mut self, files: &Vec<File>) -> Result<(), &str> {
  39         for file in files {
  40             match file.file_type {
  41                 FileType::Layout => {
  42                     let layout_text = read_to_string(&file.path).unwrap();
  43                     self.layout = Some(layout_text);
  44                     return Ok(());
  45                 },
  46                 _ => {}
  47             }
  48         }
  49         Err("No layout found. Please ensure there's a _layout.html file at the root")
  50     }
  51
  52     pub fn handle_all(&self, source: &PathBuf, html_destination: &PathBuf, gemini_destination: &PathBuf, files: &Vec<File>) {
  53         for file in files {
  54             self.handle(source, html_destination, gemini_destination, file);
  55         }
  56     }
  57
  58     pub fn handle(&self, source: &PathBuf, html_destination: &PathBuf, gemini_destination: &PathBuf, file: &File) {
  59         for strategy in self.strategies.iter() {
  60             if strategy.can_handle(&file.file_type) {
  61                 let layout = self.layout.as_ref().unwrap();
  62                 strategy.handle_html(source, html_destination, file, layout);
  63                 strategy.handle_gemini(source, gemini_destination, file);
  64                 return;
  65             }
  66         }
  67     }
  68 }
  69
  70 pub trait FileHandlerStrategy {
  71     fn is(&self, path: &PathBuf) -> bool;
  72     fn identify(&self) -> FileType;
  73     fn can_handle(&self, file_type: &FileType) -> bool;
  74     fn handle_html(&self, source: &PathBuf, destination: &PathBuf, file: &File, layout: &String);
  75     fn handle_gemini(&self, source: &PathBuf, destination: &PathBuf, file: &File);
  76 }
  77
  78 pub enum FileType {
  79     Gemini,
  80     File,
  81     Layout,
  82     Unknown,
  83 }
  84
  85 pub struct File {
  86     pub path: PathBuf,
  87     pub file_type: FileType,
  88 }