1 files changed, 68 insertions, 0 deletions
diff --git a/vendor/ucd-parse/src/script_extensions.rs b/vendor/ucd-parse/src/script_extensions.rs
new file mode 100644
index 000000000..050e1f039
--- /dev/null
+++ b/vendor/ucd-parse/src/script_extensions.rs
@@ -0,0 +1,68 @@
+use std::path::Path;
+use std::str::FromStr;
+
+use crate::common::{
+    parse_codepoint_association, CodepointIter, Codepoints, UcdFile,
+    UcdFileByCodepoint,
+};
+use crate::error::Error;
+
+/// A single row in the `ScriptExtensions.txt` file.
+#[derive(Clone, Debug, Default, Eq, PartialEq)]
+pub struct ScriptExtension {
+    /// The codepoint or codepoint range for this entry.
+    pub codepoints: Codepoints,
+    /// The script extension names assigned to the codepoints in this entry.
+    pub scripts: Vec<String>,
+}
+
+impl UcdFile for ScriptExtension {
+    fn relative_file_path() -> &'static Path {
+        Path::new("ScriptExtensions.txt")
+    }
+}
+
+impl UcdFileByCodepoint for ScriptExtension {
+    fn codepoints(&self) -> CodepointIter {
+        self.codepoints.into_iter()
+    }
+}
+
+impl FromStr for ScriptExtension {
+    type Err = Error;
+
+    fn from_str(line: &str) -> Result<ScriptExtension, Error> {
+        let (codepoints, scripts) = parse_codepoint_association(line)?;
+        Ok(ScriptExtension {
+            codepoints,
+            scripts: scripts.split_whitespace().map(str::to_string).collect(),
+        })
+    }
+}
+
+#[cfg(test)]
+mod tests {
+    use super::ScriptExtension;
+
+    #[test]
+    fn parse_single() {
+        let line = "060C          ; Arab Syrc Thaa # Po       ARABIC COMMA\n";
+        let row: ScriptExtension = line.parse().unwrap();
+        assert_eq!(row.codepoints, 0x060C);
+        assert_eq!(row.scripts, vec!["Arab", "Syrc", "Thaa"]);
+    }
+
+    #[test]
+    fn parse_range() {
+        let line = "A836..A837    ; Deva Gujr Guru Kthi Mahj Modi Sind Takr Tirh # So   [2] NORTH INDIC QUARTER MARK..NORTH INDIC PLACEHOLDER MARK\n";
+        let row: ScriptExtension = line.parse().unwrap();
+        assert_eq!(row.codepoints, (0xA836, 0xA837));
+        assert_eq!(
+            row.scripts,
+            vec![
+                "Deva", "Gujr", "Guru", "Kthi", "Mahj", "Modi", "Sind",
+                "Takr", "Tirh",
+            ]
+        );
+    }
+}