Adding upstream version 0.70.1+ds1.upstream/0.70.1+ds1upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 550 insertions, 0 deletions

diff --git a/vendor/ignore/src/lib.rs b/vendor/ignore/src/lib.rs
new file mode 100644
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--- /dev/null
+++ b/vendor/ignore/src/lib.rs
@@ -0,0 +1,550 @@
+/*!
+The ignore crate provides a fast recursive directory iterator that respects
+various filters such as globs, file types and `.gitignore` files. The precise
+matching rules and precedence is explained in the documentation for
+`WalkBuilder`.
+
+Secondarily, this crate exposes gitignore and file type matchers for use cases
+that demand more fine-grained control.
+
+# Example
+
+This example shows the most basic usage of this crate. This code will
+recursively traverse the current directory while automatically filtering out
+files and directories according to ignore globs found in files like
+`.ignore` and `.gitignore`:
+
+
+```rust,no_run
+use ignore::Walk;
+
+for result in Walk::new("./") {
+    // Each item yielded by the iterator is either a directory entry or an
+    // error, so either print the path or the error.
+    match result {
+        Ok(entry) => println!("{}", entry.path().display()),
+        Err(err) => println!("ERROR: {}", err),
+    }
+}
+```
+
+# Example: advanced
+
+By default, the recursive directory iterator will ignore hidden files and
+directories. This can be disabled by building the iterator with `WalkBuilder`:
+
+```rust,no_run
+use ignore::WalkBuilder;
+
+for result in WalkBuilder::new("./").hidden(false).build() {
+    println!("{:?}", result);
+}
+```
+
+See the documentation for `WalkBuilder` for many other options.
+*/
+
+#![deny(missing_docs)]
+
+use std::error;
+use std::fmt;
+use std::io;
+use std::path::{Path, PathBuf};
+
+pub use crate::walk::{
+    DirEntry, ParallelVisitor, ParallelVisitorBuilder, Walk, WalkBuilder,
+    WalkParallel, WalkState,
+};
+
+mod default_types;
+mod dir;
+pub mod gitignore;
+pub mod overrides;
+mod pathutil;
+pub mod types;
+mod walk;
+
+/// Represents an error that can occur when parsing a gitignore file.
+#[derive(Debug)]
+pub enum Error {
+    /// A collection of "soft" errors. These occur when adding an ignore
+    /// file partially succeeded.
+    Partial(Vec<Error>),
+    /// An error associated with a specific line number.
+    WithLineNumber {
+        /// The line number.
+        line: u64,
+        /// The underlying error.
+        err: Box<Error>,
+    },
+    /// An error associated with a particular file path.
+    WithPath {
+        /// The file path.
+        path: PathBuf,
+        /// The underlying error.
+        err: Box<Error>,
+    },
+    /// An error associated with a particular directory depth when recursively
+    /// walking a directory.
+    WithDepth {
+        /// The directory depth.
+        depth: usize,
+        /// The underlying error.
+        err: Box<Error>,
+    },
+    /// An error that occurs when a file loop is detected when traversing
+    /// symbolic links.
+    Loop {
+        /// The ancestor file path in the loop.
+        ancestor: PathBuf,
+        /// The child file path in the loop.
+        child: PathBuf,
+    },
+    /// An error that occurs when doing I/O, such as reading an ignore file.
+    Io(io::Error),
+    /// An error that occurs when trying to parse a glob.
+    Glob {
+        /// The original glob that caused this error. This glob, when
+        /// available, always corresponds to the glob provided by an end user.
+        /// e.g., It is the glob as written in a `.gitignore` file.
+        ///
+        /// (This glob may be distinct from the glob that is actually
+        /// compiled, after accounting for `gitignore` semantics.)
+        glob: Option<String>,
+        /// The underlying glob error as a string.
+        err: String,
+    },
+    /// A type selection for a file type that is not defined.
+    UnrecognizedFileType(String),
+    /// A user specified file type definition could not be parsed.
+    InvalidDefinition,
+}
+
+impl Clone for Error {
+    fn clone(&self) -> Error {
+        match *self {
+            Error::Partial(ref errs) => Error::Partial(errs.clone()),
+            Error::WithLineNumber { line, ref err } => {
+                Error::WithLineNumber { line: line, err: err.clone() }
+            }
+            Error::WithPath { ref path, ref err } => {
+                Error::WithPath { path: path.clone(), err: err.clone() }
+            }
+            Error::WithDepth { depth, ref err } => {
+                Error::WithDepth { depth: depth, err: err.clone() }
+            }
+            Error::Loop { ref ancestor, ref child } => Error::Loop {
+                ancestor: ancestor.clone(),
+                child: child.clone(),
+            },
+            Error::Io(ref err) => match err.raw_os_error() {
+                Some(e) => Error::Io(io::Error::from_raw_os_error(e)),
+                None => Error::Io(io::Error::new(err.kind(), err.to_string())),
+            },
+            Error::Glob { ref glob, ref err } => {
+                Error::Glob { glob: glob.clone(), err: err.clone() }
+            }
+            Error::UnrecognizedFileType(ref err) => {
+                Error::UnrecognizedFileType(err.clone())
+            }
+            Error::InvalidDefinition => Error::InvalidDefinition,
+        }
+    }
+}
+
+impl Error {
+    /// Returns true if this is a partial error.
+    ///
+    /// A partial error occurs when only some operations failed while others
+    /// may have succeeded. For example, an ignore file may contain an invalid
+    /// glob among otherwise valid globs.
+    pub fn is_partial(&self) -> bool {
+        match *self {
+            Error::Partial(_) => true,
+            Error::WithLineNumber { ref err, .. } => err.is_partial(),
+            Error::WithPath { ref err, .. } => err.is_partial(),
+            Error::WithDepth { ref err, .. } => err.is_partial(),
+            _ => false,
+        }
+    }
+
+    /// Returns true if this error is exclusively an I/O error.
+    pub fn is_io(&self) -> bool {
+        match *self {
+            Error::Partial(ref errs) => errs.len() == 1 && errs[0].is_io(),
+            Error::WithLineNumber { ref err, .. } => err.is_io(),
+            Error::WithPath { ref err, .. } => err.is_io(),
+            Error::WithDepth { ref err, .. } => err.is_io(),
+            Error::Loop { .. } => false,
+            Error::Io(_) => true,
+            Error::Glob { .. } => false,
+            Error::UnrecognizedFileType(_) => false,
+            Error::InvalidDefinition => false,
+        }
+    }
+
+    /// Inspect the original [`io::Error`] if there is one.
+    ///
+    /// [`None`] is returned if the [`Error`] doesn't correspond to an
+    /// [`io::Error`]. This might happen, for example, when the error was
+    /// produced because a cycle was found in the directory tree while
+    /// following symbolic links.
+    ///
+    /// This method returns a borrowed value that is bound to the lifetime of the [`Error`]. To
+    /// obtain an owned value, the [`into_io_error`] can be used instead.
+    ///
+    /// > This is the original [`io::Error`] and is _not_ the same as
+    /// > [`impl From<Error> for std::io::Error`][impl] which contains additional context about the
+    /// error.
+    ///
+    /// [`None`]: https://doc.rust-lang.org/stable/std/option/enum.Option.html#variant.None
+    /// [`io::Error`]: https://doc.rust-lang.org/stable/std/io/struct.Error.html
+    /// [`From`]: https://doc.rust-lang.org/stable/std/convert/trait.From.html
+    /// [`Error`]: struct.Error.html
+    /// [`into_io_error`]: struct.Error.html#method.into_io_error
+    /// [impl]: struct.Error.html#impl-From%3CError%3E
+    pub fn io_error(&self) -> Option<&std::io::Error> {
+        match *self {
+            Error::Partial(ref errs) => {
+                if errs.len() == 1 {
+                    errs[0].io_error()
+                } else {
+                    None
+                }
+            }
+            Error::WithLineNumber { ref err, .. } => err.io_error(),
+            Error::WithPath { ref err, .. } => err.io_error(),
+            Error::WithDepth { ref err, .. } => err.io_error(),
+            Error::Loop { .. } => None,
+            Error::Io(ref err) => Some(err),
+            Error::Glob { .. } => None,
+            Error::UnrecognizedFileType(_) => None,
+            Error::InvalidDefinition => None,
+        }
+    }
+
+    /// Similar to [`io_error`] except consumes self to convert to the original
+    /// [`io::Error`] if one exists.
+    ///
+    /// [`io_error`]: struct.Error.html#method.io_error
+    /// [`io::Error`]: https://doc.rust-lang.org/stable/std/io/struct.Error.html
+    pub fn into_io_error(self) -> Option<std::io::Error> {
+        match self {
+            Error::Partial(mut errs) => {
+                if errs.len() == 1 {
+                    errs.remove(0).into_io_error()
+                } else {
+                    None
+                }
+            }
+            Error::WithLineNumber { err, .. } => err.into_io_error(),
+            Error::WithPath { err, .. } => err.into_io_error(),
+            Error::WithDepth { err, .. } => err.into_io_error(),
+            Error::Loop { .. } => None,
+            Error::Io(err) => Some(err),
+            Error::Glob { .. } => None,
+            Error::UnrecognizedFileType(_) => None,
+            Error::InvalidDefinition => None,
+        }
+    }
+
+    /// Returns a depth associated with recursively walking a directory (if
+    /// this error was generated from a recursive directory iterator).
+    pub fn depth(&self) -> Option<usize> {
+        match *self {
+            Error::WithPath { ref err, .. } => err.depth(),
+            Error::WithDepth { depth, .. } => Some(depth),
+            _ => None,
+        }
+    }
+
+    /// Turn an error into a tagged error with the given file path.
+    fn with_path<P: AsRef<Path>>(self, path: P) -> Error {
+        Error::WithPath {
+            path: path.as_ref().to_path_buf(),
+            err: Box::new(self),
+        }
+    }
+
+    /// Turn an error into a tagged error with the given depth.
+    fn with_depth(self, depth: usize) -> Error {
+        Error::WithDepth { depth: depth, err: Box::new(self) }
+    }
+
+    /// Turn an error into a tagged error with the given file path and line
+    /// number. If path is empty, then it is omitted from the error.
+    fn tagged<P: AsRef<Path>>(self, path: P, lineno: u64) -> Error {
+        let errline =
+            Error::WithLineNumber { line: lineno, err: Box::new(self) };
+        if path.as_ref().as_os_str().is_empty() {
+            return errline;
+        }
+        errline.with_path(path)
+    }
+
+    /// Build an error from a walkdir error.
+    fn from_walkdir(err: walkdir::Error) -> Error {
+        let depth = err.depth();
+        if let (Some(anc), Some(child)) = (err.loop_ancestor(), err.path()) {
+            return Error::WithDepth {
+                depth: depth,
+                err: Box::new(Error::Loop {
+                    ancestor: anc.to_path_buf(),
+                    child: child.to_path_buf(),
+                }),
+            };
+        }
+        let path = err.path().map(|p| p.to_path_buf());
+        let mut ig_err = Error::Io(io::Error::from(err));
+        if let Some(path) = path {
+            ig_err = Error::WithPath { path: path, err: Box::new(ig_err) };
+        }
+        ig_err
+    }
+}
+
+impl error::Error for Error {
+    #[allow(deprecated)]
+    fn description(&self) -> &str {
+        match *self {
+            Error::Partial(_) => "partial error",
+            Error::WithLineNumber { ref err, .. } => err.description(),
+            Error::WithPath { ref err, .. } => err.description(),
+            Error::WithDepth { ref err, .. } => err.description(),
+            Error::Loop { .. } => "file system loop found",
+            Error::Io(ref err) => err.description(),
+            Error::Glob { ref err, .. } => err,
+            Error::UnrecognizedFileType(_) => "unrecognized file type",
+            Error::InvalidDefinition => "invalid definition",
+        }
+    }
+}
+
+impl fmt::Display for Error {
+    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
+        match *self {
+            Error::Partial(ref errs) => {
+                let msgs: Vec<String> =
+                    errs.iter().map(|err| err.to_string()).collect();
+                write!(f, "{}", msgs.join("\n"))
+            }
+            Error::WithLineNumber { line, ref err } => {
+                write!(f, "line {}: {}", line, err)
+            }
+            Error::WithPath { ref path, ref err } => {
+                write!(f, "{}: {}", path.display(), err)
+            }
+            Error::WithDepth { ref err, .. } => err.fmt(f),
+            Error::Loop { ref ancestor, ref child } => write!(
+                f,
+                "File system loop found: \
+                           {} points to an ancestor {}",
+                child.display(),
+                ancestor.display()
+            ),
+            Error::Io(ref err) => err.fmt(f),
+            Error::Glob { glob: None, ref err } => write!(f, "{}", err),
+            Error::Glob { glob: Some(ref glob), ref err } => {
+                write!(f, "error parsing glob '{}': {}", glob, err)
+            }
+            Error::UnrecognizedFileType(ref ty) => {
+                write!(f, "unrecognized file type: {}", ty)
+            }
+            Error::InvalidDefinition => write!(
+                f,
+                "invalid definition (format is type:glob, e.g., \
+                           html:*.html)"
+            ),
+        }
+    }
+}
+
+impl From<io::Error> for Error {
+    fn from(err: io::Error) -> Error {
+        Error::Io(err)
+    }
+}
+
+#[derive(Debug, Default)]
+struct PartialErrorBuilder(Vec<Error>);
+
+impl PartialErrorBuilder {
+    fn push(&mut self, err: Error) {
+        self.0.push(err);
+    }
+
+    fn push_ignore_io(&mut self, err: Error) {
+        if !err.is_io() {
+            self.push(err);
+        }
+    }
+
+    fn maybe_push(&mut self, err: Option<Error>) {
+        if let Some(err) = err {
+            self.push(err);
+        }
+    }
+
+    fn maybe_push_ignore_io(&mut self, err: Option<Error>) {
+        if let Some(err) = err {
+            self.push_ignore_io(err);
+        }
+    }
+
+    fn into_error_option(mut self) -> Option<Error> {
+        if self.0.is_empty() {
+            None
+        } else if self.0.len() == 1 {
+            Some(self.0.pop().unwrap())
+        } else {
+            Some(Error::Partial(self.0))
+        }
+    }
+}
+
+/// The result of a glob match.
+///
+/// The type parameter `T` typically refers to a type that provides more
+/// information about a particular match. For example, it might identify
+/// the specific gitignore file and the specific glob pattern that caused
+/// the match.
+#[derive(Clone, Debug)]
+pub enum Match<T> {
+    /// The path didn't match any glob.
+    None,
+    /// The highest precedent glob matched indicates the path should be
+    /// ignored.
+    Ignore(T),
+    /// The highest precedent glob matched indicates the path should be
+    /// whitelisted.
+    Whitelist(T),
+}
+
+impl<T> Match<T> {
+    /// Returns true if the match result didn't match any globs.
+    pub fn is_none(&self) -> bool {
+        match *self {
+            Match::None => true,
+            Match::Ignore(_) | Match::Whitelist(_) => false,
+        }
+    }
+
+    /// Returns true if the match result implies the path should be ignored.
+    pub fn is_ignore(&self) -> bool {
+        match *self {
+            Match::Ignore(_) => true,
+            Match::None | Match::Whitelist(_) => false,
+        }
+    }
+
+    /// Returns true if the match result implies the path should be
+    /// whitelisted.
+    pub fn is_whitelist(&self) -> bool {
+        match *self {
+            Match::Whitelist(_) => true,
+            Match::None | Match::Ignore(_) => false,
+        }
+    }
+
+    /// Inverts the match so that `Ignore` becomes `Whitelist` and
+    /// `Whitelist` becomes `Ignore`. A non-match remains the same.
+    pub fn invert(self) -> Match<T> {
+        match self {
+            Match::None => Match::None,
+            Match::Ignore(t) => Match::Whitelist(t),
+            Match::Whitelist(t) => Match::Ignore(t),
+        }
+    }
+
+    /// Return the value inside this match if it exists.
+    pub fn inner(&self) -> Option<&T> {
+        match *self {
+            Match::None => None,
+            Match::Ignore(ref t) => Some(t),
+            Match::Whitelist(ref t) => Some(t),
+        }
+    }
+
+    /// Apply the given function to the value inside this match.
+    ///
+    /// If the match has no value, then return the match unchanged.
+    pub fn map<U, F: FnOnce(T) -> U>(self, f: F) -> Match<U> {
+        match self {
+            Match::None => Match::None,
+            Match::Ignore(t) => Match::Ignore(f(t)),
+            Match::Whitelist(t) => Match::Whitelist(f(t)),
+        }
+    }
+
+    /// Return the match if it is not none. Otherwise, return other.
+    pub fn or(self, other: Self) -> Self {
+        if self.is_none() {
+            other
+        } else {
+            self
+        }
+    }
+}
+
+#[cfg(test)]
+mod tests {
+    use std::env;
+    use std::error;
+    use std::fs;
+    use std::path::{Path, PathBuf};
+    use std::result;
+
+    /// A convenient result type alias.
+    pub type Result<T> =
+        result::Result<T, Box<dyn error::Error + Send + Sync>>;
+
+    macro_rules! err {
+        ($($tt:tt)*) => {
+            Box::<dyn error::Error + Send + Sync>::from(format!($($tt)*))
+        }
+    }
+
+    /// A simple wrapper for creating a temporary directory that is
+    /// automatically deleted when it's dropped.
+    ///
+    /// We use this in lieu of tempfile because tempfile brings in too many
+    /// dependencies.
+    #[derive(Debug)]
+    pub struct TempDir(PathBuf);
+
+    impl Drop for TempDir {
+        fn drop(&mut self) {
+            fs::remove_dir_all(&self.0).unwrap();
+        }
+    }
+
+    impl TempDir {
+        /// Create a new empty temporary directory under the system's configured
+        /// temporary directory.
+        pub fn new() -> Result<TempDir> {
+            use std::sync::atomic::{AtomicUsize, Ordering};
+
+            static TRIES: usize = 100;
+            static COUNTER: AtomicUsize = AtomicUsize::new(0);
+
+            let tmpdir = env::temp_dir();
+            for _ in 0..TRIES {
+                let count = COUNTER.fetch_add(1, Ordering::SeqCst);
+                let path = tmpdir.join("rust-ignore").join(count.to_string());
+                if path.is_dir() {
+                    continue;
+                }
+                fs::create_dir_all(&path).map_err(|e| {
+                    err!("failed to create {}: {}", path.display(), e)
+                })?;
+                return Ok(TempDir(path));
+            }
+            Err(err!("failed to create temp dir after {} tries", TRIES))
+        }
+
+        /// Return the underlying path to this temporary directory.
+        pub fn path(&self) -> &Path {
+            &self.0
+        }
+    }
+}