85 lines
2.3 KiB
Rust
85 lines
2.3 KiB
Rust
use std::path::Path;
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use std::path::PathBuf;
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use crate::error::CustomError;
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use super::dependency::Dependency;
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pub(crate) type RefDependencyManager = std::sync::Arc<std::sync::Mutex<DependencyManager>>;
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#[derive(Debug)]
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pub(crate) struct DependencyManager {
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/// A stack of paths for the files being visited.
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///
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/// The last entry is the current file being processed. This can be used for handling relative-path links.
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file_stack: Vec<PathBuf>,
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dependencies: Vec<Dependency>,
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}
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impl DependencyManager {
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pub(crate) fn new() -> Self {
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DependencyManager {
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file_stack: Vec::new(),
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dependencies: Vec::new(),
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}
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}
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pub(crate) fn push_file<P>(&mut self, path: P) -> Result<(), CustomError>
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where
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P: Into<PathBuf>,
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{
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self.file_stack.push(path.into());
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Ok(())
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}
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pub(crate) fn pop_file(&mut self) -> Result<(), CustomError> {
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self.file_stack
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.pop()
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.expect("Popped more files off the dependency manager file stack than exist.");
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Ok(())
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}
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pub(crate) fn get_current_folder(&self) -> Result<&Path, CustomError> {
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Ok(self
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.file_stack
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.last()
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.ok_or("No current file")?
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.parent()
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.ok_or("Current file was not in a directory")?)
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}
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pub(crate) fn mark_file_for_copying<P>(&mut self, path: P) -> Result<(), CustomError>
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where
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P: Into<PathBuf>,
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{
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self.dependencies.push(Dependency::StaticFile {
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absolute_path: path.into(),
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});
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Ok(())
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}
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/// Return the dependencies and forget about them.
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pub(crate) fn take_dependencies(&mut self) -> Vec<Dependency> {
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let mut dependencies = Vec::new();
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std::mem::swap(&mut self.dependencies, &mut dependencies);
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dependencies
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}
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pub(crate) fn include_css<N>(&mut self, name: N) -> Result<(), CustomError>
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where
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std::string::String: From<N>,
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{
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self.dependencies
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.push(Dependency::CssFile { name: name.into() });
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Ok(())
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}
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pub(crate) fn list_css(&self) -> Result<impl Iterator<Item = &String>, CustomError> {
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Ok(self.dependencies.iter().filter_map(|dep| match dep {
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Dependency::CssFile { name } => Some(name),
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_ => None,
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}))
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}
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}
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