1 files changed, 223 insertions, 0 deletions
diff --git a/vendor/gix-url/src/lib.rs b/vendor/gix-url/src/lib.rs
new file mode 100644
index 000000000..9e3de2b79
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+++ b/vendor/gix-url/src/lib.rs
@@ -0,0 +1,223 @@
+//! A library implementing a URL for use in git with access to its special capabilities.
+//! ## Feature Flags
+#![cfg_attr(
+    feature = "document-features",
+    cfg_attr(doc, doc = ::document_features::document_features!())
+)]
+#![cfg_attr(docsrs, feature(doc_cfg, doc_auto_cfg))]
+#![deny(rust_2018_idioms, missing_docs)]
+#![forbid(unsafe_code)]
+
+use bstr::{BStr, BString};
+
+///
+pub mod parse;
+#[doc(inline)]
+pub use parse::parse;
+
+///
+pub mod expand_path;
+#[doc(inline)]
+pub use expand_path::expand_path;
+
+mod scheme;
+pub use scheme::Scheme;
+
+/// A URL with support for specialized git related capabilities.
+///
+/// Additionally there is support for [deserialization][Url::from_bytes()] and serialization
+/// (_see the `Display::fmt()` implementation_).
+///
+/// # Deviation
+///
+/// Note that we do not support passing the password using the URL as it's likely leading to accidents.
+#[derive(PartialEq, Eq, Debug, Hash, Ord, PartialOrd, Clone)]
+#[cfg_attr(feature = "serde1", derive(serde::Serialize, serde::Deserialize))]
+pub struct Url {
+    /// The URL scheme.
+    pub scheme: Scheme,
+    /// The user to impersonate on the remote.
+    user: Option<String>,
+    /// The host to which to connect. Localhost is implied if `None`.
+    host: Option<String>,
+    /// When serializing, use the alternative forms as it was parsed as such.
+    serialize_alternative_form: bool,
+    /// The port to use when connecting to a host. If `None`, standard ports depending on `scheme` will be used.
+    pub port: Option<u16>,
+    /// The path portion of the URL, usually the location of the git repository.
+    pub path: bstr::BString,
+}
+
+/// Instantiation
+impl Url {
+    /// Create a new instance from the given parts, which will be validated by parsing them back.
+    pub fn from_parts(
+        scheme: Scheme,
+        user: Option<String>,
+        host: Option<String>,
+        port: Option<u16>,
+        path: BString,
+    ) -> Result<Self, parse::Error> {
+        parse(
+            Url {
+                scheme,
+                user,
+                host,
+                port,
+                path,
+                serialize_alternative_form: false,
+            }
+            .to_bstring()
+            .as_ref(),
+        )
+    }
+
+    /// Create a new instance from the given parts, which will be validated by parsing them back from its alternative form.
+    pub fn from_parts_as_alternative_form(
+        scheme: Scheme,
+        user: Option<String>,
+        host: Option<String>,
+        port: Option<u16>,
+        path: BString,
+    ) -> Result<Self, parse::Error> {
+        parse(
+            Url {
+                scheme,
+                user,
+                host,
+                port,
+                path,
+                serialize_alternative_form: true,
+            }
+            .to_bstring()
+            .as_ref(),
+        )
+    }
+}
+
+/// Modification
+impl Url {
+    /// Set the given `user`, with `None` unsetting it. Returns the previous value.
+    pub fn set_user(&mut self, user: Option<String>) -> Option<String> {
+        let prev = self.user.take();
+        self.user = user;
+        prev
+    }
+}
+
+/// Builder
+impl Url {
+    /// Enable alternate serialization for this url, e.g. `file:///path` becomes `/path`.
+    ///
+    /// This is automatically set correctly for parsed URLs, but can be set here for urls
+    /// created by constructor.
+    pub fn serialize_alternate_form(mut self, use_alternate_form: bool) -> Self {
+        self.serialize_alternative_form = use_alternate_form;
+        self
+    }
+
+    /// Turn a file url like `file://relative` into `file:///root/relative`, hence it assures the url's path component is absolute.
+    pub fn canonicalize(&mut self) -> Result<(), gix_path::realpath::Error> {
+        if self.scheme == Scheme::File {
+            let path = gix_path::from_bstr(self.path.as_ref());
+            let abs_path = gix_path::realpath(path)?;
+            self.path = gix_path::into_bstr(abs_path).into_owned();
+        }
+        Ok(())
+    }
+}
+
+/// Access
+impl Url {
+    /// Returns the user mentioned in the url, if present.
+    pub fn user(&self) -> Option<&str> {
+        self.user.as_deref()
+    }
+    /// Returns the host mentioned in the url, if present.
+    pub fn host(&self) -> Option<&str> {
+        self.host.as_deref()
+    }
+    /// Returns true if the path portion of the url is `/`.
+    pub fn path_is_root(&self) -> bool {
+        self.path == "/"
+    }
+    /// Returns the actual or default port for use according to the url scheme.
+    /// Note that there may be no default port either.
+    pub fn port_or_default(&self) -> Option<u16> {
+        self.port.or_else(|| {
+            use Scheme::*;
+            Some(match self.scheme {
+                Http => 80,
+                Https => 443,
+                Ssh => 22,
+                Git => 9418,
+                File | Ext(_) => return None,
+            })
+        })
+    }
+}
+
+/// Transformation
+impl Url {
+    /// Turn a file url like `file://relative` into `file:///root/relative`, hence it assures the url's path component is absolute.
+    pub fn canonicalized(&self) -> Result<Self, gix_path::realpath::Error> {
+        let mut res = self.clone();
+        res.canonicalize()?;
+        Ok(res)
+    }
+}
+
+/// Serialization
+impl Url {
+    /// Write this URL losslessly to `out`, ready to be parsed again.
+    pub fn write_to(&self, mut out: impl std::io::Write) -> std::io::Result<()> {
+        if !(self.serialize_alternative_form && (self.scheme == Scheme::File || self.scheme == Scheme::Ssh)) {
+            out.write_all(self.scheme.as_str().as_bytes())?;
+            out.write_all(b"://")?;
+        }
+        match (&self.user, &self.host) {
+            (Some(user), Some(host)) => {
+                out.write_all(user.as_bytes())?;
+                out.write_all(&[b'@'])?;
+                out.write_all(host.as_bytes())?;
+            }
+            (None, Some(host)) => {
+                out.write_all(host.as_bytes())?;
+            }
+            (None, None) => {}
+            (Some(_user), None) => unreachable!("BUG: should not be possible to have a user but no host"),
+        };
+        if let Some(port) = &self.port {
+            write!(&mut out, ":{port}")?;
+        }
+        if self.serialize_alternative_form && self.scheme == Scheme::Ssh {
+            out.write_all(b":")?;
+        }
+        out.write_all(&self.path)?;
+        Ok(())
+    }
+
+    /// Transform ourselves into a binary string, losslessly, or fail if the URL is malformed due to host or user parts being incorrect.
+    pub fn to_bstring(&self) -> bstr::BString {
+        let mut buf = Vec::with_capacity(
+            (5 + 3)
+                + self.user.as_ref().map(|n| n.len()).unwrap_or_default()
+                + 1
+                + self.host.as_ref().map(|h| h.len()).unwrap_or_default()
+                + self.port.map(|_| 5).unwrap_or_default()
+                + self.path.len(),
+        );
+        self.write_to(&mut buf).expect("io cannot fail in memory");
+        buf.into()
+    }
+}
+
+/// Deserialization
+impl Url {
+    /// Parse a URL from `bytes`
+    pub fn from_bytes(bytes: &BStr) -> Result<Self, parse::Error> {
+        parse(bytes)
+    }
+}
+
+mod impls;