1 files changed, 125 insertions, 0 deletions
diff --git a/vendor/gix/src/remote/save.rs b/vendor/gix/src/remote/save.rs
new file mode 100644
index 000000000..0e347551e
--- /dev/null
+++ b/vendor/gix/src/remote/save.rs
@@ -0,0 +1,125 @@
+use std::convert::TryInto;
+
+use crate::{
+    bstr::{BStr, BString},
+    config, remote, Remote,
+};
+
+/// The error returned by [`Remote::save_to()`].
+#[derive(Debug, thiserror::Error)]
+#[allow(missing_docs)]
+pub enum Error {
+    #[error("The remote pointing to {} is anonymous and can't be saved.", url.to_bstring())]
+    NameMissing { url: gix_url::Url },
+}
+
+/// The error returned by [`Remote::save_as_to()`].
+///
+/// Note that this type should rather be in the `as` module, but cannot be as it's part of the Rust syntax.
+#[derive(Debug, thiserror::Error)]
+#[allow(missing_docs)]
+pub enum AsError {
+    #[error(transparent)]
+    Save(#[from] Error),
+    #[error(transparent)]
+    Name(#[from] crate::remote::name::Error),
+}
+
+/// Serialize into gix-config.
+impl Remote<'_> {
+    /// Save ourselves to the given `config` if we are a named remote or fail otherwise.
+    ///
+    /// Note that all sections named `remote "<name>"` will be cleared of all values we are about to write,
+    /// and the last `remote "<name>"` section will be containing all relevant values so that reloading the remote
+    /// from `config` would yield the same in-memory state.
+    pub fn save_to(&self, config: &mut gix_config::File<'static>) -> Result<(), Error> {
+        fn as_key(name: &str) -> gix_config::parse::section::Key<'_> {
+            name.try_into().expect("valid")
+        }
+        let name = self.name().ok_or_else(|| Error::NameMissing {
+            url: self
+                .url
+                .as_ref()
+                .or(self.push_url.as_ref())
+                .expect("one url is always set")
+                .to_owned(),
+        })?;
+        if let Some(section_ids) = config.sections_and_ids_by_name("remote").map(|it| {
+            it.filter_map(|(s, id)| (s.header().subsection_name() == Some(name.as_bstr())).then_some(id))
+                .collect::<Vec<_>>()
+        }) {
+            let mut sections_to_remove = Vec::new();
+            const KEYS_TO_REMOVE: &[&str] = &[
+                config::tree::Remote::URL.name,
+                config::tree::Remote::PUSH_URL.name,
+                config::tree::Remote::FETCH.name,
+                config::tree::Remote::PUSH.name,
+                config::tree::Remote::TAG_OPT.name,
+            ];
+            for id in section_ids {
+                let mut section = config.section_mut_by_id(id).expect("just queried");
+                let was_empty = section.num_values() == 0;
+
+                for key in KEYS_TO_REMOVE {
+                    while section.remove(key).is_some() {}
+                }
+
+                let is_empty_after_deletions_of_values_to_be_written = section.num_values() == 0;
+                if !was_empty && is_empty_after_deletions_of_values_to_be_written {
+                    sections_to_remove.push(id);
+                }
+            }
+            for id in sections_to_remove {
+                config.remove_section_by_id(id);
+            }
+        }
+        let mut section = config
+            .section_mut_or_create_new("remote", Some(name.as_ref()))
+            .expect("section name is validated and 'remote' is acceptable");
+        if let Some(url) = self.url.as_ref() {
+            section.push(as_key("url"), Some(url.to_bstring().as_ref()));
+        }
+        if let Some(url) = self.push_url.as_ref() {
+            section.push(as_key("pushurl"), Some(url.to_bstring().as_ref()));
+        }
+        if self.fetch_tags != Default::default() {
+            section.push(
+                as_key(config::tree::Remote::TAG_OPT.name),
+                BStr::new(match self.fetch_tags {
+                    remote::fetch::Tags::All => "--tags",
+                    remote::fetch::Tags::None => "--no-tags",
+                    remote::fetch::Tags::Included => unreachable!("BUG: the default shouldn't be written and we try"),
+                })
+                .into(),
+            );
+        }
+        for (key, spec) in self
+            .fetch_specs
+            .iter()
+            .map(|spec| ("fetch", spec))
+            .chain(self.push_specs.iter().map(|spec| ("push", spec)))
+        {
+            section.push(as_key(key), Some(spec.to_ref().to_bstring().as_ref()));
+        }
+        Ok(())
+    }
+
+    /// Forcefully set our name to `name` and write our state to `config` similar to [`save_to()`][Self::save_to()].
+    ///
+    /// Note that this sets a name for anonymous remotes, but overwrites the name for those who were named before.
+    /// If this name is different from the current one, the git configuration will still contain the previous name,
+    /// and the caller should account for that.
+    pub fn save_as_to(
+        &mut self,
+        name: impl Into<BString>,
+        config: &mut gix_config::File<'static>,
+    ) -> Result<(), AsError> {
+        let name = crate::remote::name::validated(name)?;
+        let prev_name = self.name.take();
+        self.name = Some(name.into());
+        self.save_to(config).map_err(|err| {
+            self.name = prev_name;
+            err.into()
+        })
+    }
+}