116 lines
2.9 KiB
Rust
116 lines
2.9 KiB
Rust
extern crate glob;
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use gitignore;
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use std::io;
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use std::path::{Path,PathBuf};
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use self::glob::{Pattern,PatternError};
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pub struct NotificationFilter {
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cwd: PathBuf,
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filters: Vec<Pattern>,
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ignores: Vec<Pattern>,
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ignore_file: Option<gitignore::PatternSet>
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}
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#[derive(Debug)]
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pub enum NotificationError {
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BadPattern(PatternError),
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Io(io::Error)
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}
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impl NotificationFilter {
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pub fn new(current_dir: &Path, ignore_file: Option<gitignore::PatternSet>) -> Result<NotificationFilter, io::Error> {
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let canonicalized = try!(current_dir.canonicalize());
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Ok(NotificationFilter {
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cwd: canonicalized,
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filters: vec![],
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ignores: vec![],
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ignore_file: ignore_file
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})
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}
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pub fn add_filter(&mut self, pattern: &str) -> Result<(), NotificationError> {
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let compiled = try!(self.pattern_for(pattern));
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self.filters.push(compiled);
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debug!("Adding filter: {}", pattern);
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Ok(())
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}
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pub fn add_ignore(&mut self, pattern: &str) -> Result<(), NotificationError> {
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let compiled = try!(self.pattern_for(pattern));
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self.ignores.push(compiled);
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debug!("Adding ignore: {}", pattern);
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Ok(())
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}
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fn pattern_for(&self, p: &str) -> Result<Pattern, PatternError> {
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let mut path = PathBuf::from(p);
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if path.is_relative() {
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path = self.cwd.join(path.as_path());
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}
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if let Ok(metadata) = path.metadata() {
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if metadata.is_dir() {
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path = path.join("*");
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}
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}
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Pattern::new(path.to_str().unwrap())
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}
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pub fn is_excluded(&self, path: &Path) -> bool {
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let path_as_str = path.to_str().unwrap();
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if let Ok(metadata) = path.metadata() {
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if metadata.is_dir() {
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debug!("Ignoring {:?}: is a directory", path);
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return true;
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}
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}
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for pattern in &self.ignores {
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if pattern.matches(path_as_str) {
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debug!("Ignoring {:?}: matched ignore filter", path);
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return true;
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}
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}
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for pattern in &self.filters {
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if pattern.matches(path_as_str) {
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return false;
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}
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}
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if let Some(ref ignore_file) = self.ignore_file {
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if ignore_file.is_excluded(path) {
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debug!("Ignoring {:?}: matched gitignore file", path);
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return true;
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}
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}
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if !self.filters.is_empty() {
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debug!("Ignoring {:?}: did not match any given filters", path);
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}
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!self.filters.is_empty()
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}
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}
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impl From<io::Error> for NotificationError {
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fn from(err: io::Error) -> NotificationError {
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NotificationError::Io(err)
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}
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}
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impl From<PatternError> for NotificationError {
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fn from(err: PatternError) -> NotificationError {
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NotificationError::BadPattern(err)
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}
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}
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