1 files changed, 86 insertions, 0 deletions
diff --git a/vendor/ucd-parse/src/emoji_properties.rs b/vendor/ucd-parse/src/emoji_properties.rs
new file mode 100644
index 000000000..dc5c0c884
--- /dev/null
+++ b/vendor/ucd-parse/src/emoji_properties.rs
@@ -0,0 +1,86 @@
+use std::path::{Path, PathBuf};
+use std::str::FromStr;
+
+use crate::common::{
+    parse_codepoint_association, CodepointIter, Codepoints, UcdFile,
+    UcdFileByCodepoint,
+};
+use crate::error::Error;
+
+/// A single row in the `emoji-data.txt` file.
+///
+/// The `emoji-data.txt` file is the source of truth on several Emoji-related
+/// Unicode properties.
+///
+/// Note that `emoji-data.txt` is not formally part of the Unicode Character
+/// Database. You can download the Emoji data files separately here:
+/// https://unicode.org/Public/emoji/
+#[derive(Clone, Debug, Default, Eq, PartialEq)]
+pub struct EmojiProperty {
+    /// The codepoint or codepoint range for this entry.
+    pub codepoints: Codepoints,
+    /// The property name assigned to the codepoints in this entry.
+    pub property: String,
+}
+
+impl UcdFile for EmojiProperty {
+    fn relative_file_path() -> &'static Path {
+        Path::new("emoji/emoji-data.txt")
+    }
+
+    fn file_path<P: AsRef<Path>>(ucd_dir: P) -> PathBuf {
+        let ucd_dir = ucd_dir.as_ref();
+        // The standard location, but only on UCDs from 13.0.0 and up.
+        let std = ucd_dir.join(Self::relative_file_path());
+        if std.exists() {
+            std
+        } else {
+            // If the old location does exist, use it.
+            let legacy = ucd_dir.join("emoji-data.txt");
+            if legacy.exists() {
+                legacy
+            } else {
+                // This might end up in an error message, so use the standard
+                // one if forced to choose. Arguably we could do something like
+                // peek
+                std
+            }
+        }
+    }
+}
+
+impl UcdFileByCodepoint for EmojiProperty {
+    fn codepoints(&self) -> CodepointIter {
+        self.codepoints.into_iter()
+    }
+}
+
+impl FromStr for EmojiProperty {
+    type Err = Error;
+
+    fn from_str(line: &str) -> Result<EmojiProperty, Error> {
+        let (codepoints, property) = parse_codepoint_association(line)?;
+        Ok(EmojiProperty { codepoints, property: property.to_string() })
+    }
+}
+
+#[cfg(test)]
+mod tests {
+    use super::EmojiProperty;
+
+    #[test]
+    fn parse_single() {
+        let line = "24C2          ; Emoji                #  1.1  [1] (Ⓜ️)       circled M\n";
+        let row: EmojiProperty = line.parse().unwrap();
+        assert_eq!(row.codepoints, 0x24C2);
+        assert_eq!(row.property, "Emoji");
+    }
+
+    #[test]
+    fn parse_range() {
+        let line = "1FA6E..1FFFD  ; Extended_Pictographic#   NA[1424] (🩮️..🿽️)   <reserved-1FA6E>..<reserved-1FFFD>\n";
+        let row: EmojiProperty = line.parse().unwrap();
+        assert_eq!(row.codepoints, (0x1FA6E, 0x1FFFD));
+        assert_eq!(row.property, "Extended_Pictographic");
+    }
+}