file_source/paths_provider/
glob.rs

1//! [`Glob`] paths provider.
2
3use std::path::PathBuf;
4
5pub use glob::MatchOptions;
6use glob::Pattern;
7
8use super::PathsProvider;
9use crate::FileSourceInternalEvents;
10
11/// A glob-based path provider.
12///
13/// Provides the paths to the files on the file system that match include
14/// patterns and don't match the exclude patterns.
15pub struct Glob<E: FileSourceInternalEvents> {
16    include_patterns: Vec<String>,
17    exclude_patterns: Vec<Pattern>,
18    glob_match_options: MatchOptions,
19    emitter: E,
20}
21
22impl<E: FileSourceInternalEvents> Glob<E> {
23    /// Create a new [`Glob`].
24    ///
25    /// Returns `None` if patterns aren't valid.
26    pub fn new(
27        include_patterns: &[PathBuf],
28        exclude_patterns: &[PathBuf],
29        glob_match_options: MatchOptions,
30        emitter: E,
31    ) -> Option<Self> {
32        let include_patterns = include_patterns
33            .iter()
34            .map(|path| path.to_str().map(ToOwned::to_owned))
35            .collect::<Option<_>>()?;
36
37        let exclude_patterns = exclude_patterns
38            .iter()
39            .filter_map(|path| path.to_str().map(|path| Pattern::new(path).ok()))
40            .collect::<Option<Vec<_>>>()?;
41
42        Some(Self {
43            include_patterns,
44            exclude_patterns,
45            glob_match_options,
46            emitter,
47        })
48    }
49}
50
51impl<E: FileSourceInternalEvents> PathsProvider for Glob<E> {
52    type IntoIter = Vec<PathBuf>;
53
54    fn paths(&self) -> Self::IntoIter {
55        self.include_patterns
56            .iter()
57            .flat_map(|include_pattern| {
58                glob::glob_with(include_pattern.as_str(), self.glob_match_options)
59                    .expect("failed to read glob pattern")
60                    .filter_map(|val| {
61                        val.map_err(|error| {
62                            self.emitter
63                                .emit_path_globbing_failed(error.path(), error.error())
64                        })
65                        .ok()
66                    })
67            })
68            .filter(|candidate_path: &PathBuf| -> bool {
69                !self.exclude_patterns.iter().any(|exclude_pattern| {
70                    let candidate_path_str = candidate_path.to_str().unwrap();
71                    exclude_pattern.matches(candidate_path_str)
72                })
73            })
74            .collect()
75    }
76}
file_source/paths_provider/glob.rs

file_source/paths_provider/
glob.rs
