1 files changed, 49 insertions, 0 deletions
diff --git a/vendor/gix/src/config/overrides.rs b/vendor/gix/src/config/overrides.rs
new file mode 100644
index 000000000..f43e8471b
--- /dev/null
+++ b/vendor/gix/src/config/overrides.rs
@@ -0,0 +1,49 @@
+use std::convert::TryFrom;
+
+use crate::bstr::{BStr, BString, ByteSlice};
+
+/// The error returned by [SnapshotMut::apply_cli_overrides()][crate::config::SnapshotMut::append_config()].
+#[derive(Debug, thiserror::Error)]
+#[allow(missing_docs)]
+pub enum Error {
+    #[error("{input:?} is not a valid configuration key. Examples are 'core.abbrev' or 'remote.origin.url'")]
+    InvalidKey { input: BString },
+    #[error("Key {key:?} could not be parsed")]
+    SectionKey {
+        key: BString,
+        source: gix_config::parse::section::key::Error,
+    },
+    #[error(transparent)]
+    SectionHeader(#[from] gix_config::parse::section::header::Error),
+}
+
+pub(crate) fn append(
+    config: &mut gix_config::File<'static>,
+    values: impl IntoIterator<Item = impl AsRef<BStr>>,
+    source: gix_config::Source,
+    mut make_comment: impl FnMut(&BStr) -> Option<BString>,
+) -> Result<(), Error> {
+    let mut file = gix_config::File::new(gix_config::file::Metadata::from(source));
+    for key_value in values {
+        let key_value = key_value.as_ref();
+        let mut tokens = key_value.splitn(2, |b| *b == b'=').map(|v| v.trim());
+        let key = tokens.next().expect("always one value").as_bstr();
+        let value = tokens.next();
+        let key = gix_config::parse::key(key.to_str().map_err(|_| Error::InvalidKey { input: key.into() })?)
+            .ok_or_else(|| Error::InvalidKey { input: key.into() })?;
+        let mut section = file.section_mut_or_create_new(key.section_name, key.subsection_name)?;
+        let key =
+            gix_config::parse::section::Key::try_from(key.value_name.to_owned()).map_err(|err| Error::SectionKey {
+                source: err,
+                key: key.value_name.into(),
+            })?;
+        let comment = make_comment(key_value);
+        let value = value.map(|v| v.as_bstr());
+        match comment {
+            Some(comment) => section.push_with_comment(key, value, &**comment),
+            None => section.push(key, value),
+        };
+    }
+    config.append(file);
+    Ok(())
+}