Adding upstream version 1.64.0+dfsg1.upstream/1.64.0+dfsg1

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

1 files changed, 65 insertions, 0 deletions

diff --git a/vendor/elasticlunr-rs/src/pipeline.rs b/vendor/elasticlunr-rs/src/pipeline.rs
new file mode 100644
index 000000000..a20de3f11
--- /dev/null
+++ b/vendor/elasticlunr-rs/src/pipeline.rs
@@ -0,0 +1,65 @@
+//! Defines the pipeline which processes text for inclusion in the index. Most users do not need
+//! to use this module directly.
+
+use serde::ser::{Serialize, SerializeSeq, Serializer};
+
+pub trait PipelineFn {
+    fn name(&self) -> String;
+
+    fn filter(&self, token: String) -> Option<String>;
+}
+
+#[derive(Clone)]
+pub struct FnWrapper(pub String, pub fn(String) -> Option<String>);
+
+impl PipelineFn for FnWrapper {
+    fn name(&self) -> String {
+        self.0.clone()
+    }
+
+    fn filter(&self, token: String) -> Option<String> {
+        (self.1)(token)
+    }
+}
+
+/// A sequence of `PipelineFn`s which are run on tokens to prepare them for searching.
+#[derive(Deserialize)]
+pub struct Pipeline {
+    #[serde(skip_deserializing)]
+    pub queue: Vec<Box<dyn PipelineFn>>,
+}
+
+impl Serialize for Pipeline {
+    fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
+    where
+        S: Serializer,
+    {
+        let mut seq = serializer.serialize_seq(Some(self.queue.len()))?;
+        for elem in &self.queue {
+            seq.serialize_element(&elem.name())?;
+        }
+        seq.end()
+    }
+}
+
+impl Pipeline {
+    /// Run the Pipeline against the given vector of tokens. The returned vector may be shorter
+    /// than the input if a pipeline function returns `None` for a token.
+    pub fn run(&self, tokens: Vec<String>) -> Vec<String> {
+        let mut ret = vec![];
+        for token in tokens {
+            let mut token = Some(token);
+            for func in &self.queue {
+                if let Some(t) = token {
+                    token = func.filter(t);
+                } else {
+                    break;
+                }
+            }
+            if let Some(t) = token {
+                ret.push(t);
+            }
+        }
+        ret
+    }
+}