1 files changed, 184 insertions, 0 deletions
diff --git a/vendor/ucd-parse/src/arabic_shaping.rs b/vendor/ucd-parse/src/arabic_shaping.rs
new file mode 100644
index 000000000..d1d942a82
--- /dev/null
+++ b/vendor/ucd-parse/src/arabic_shaping.rs
@@ -0,0 +1,184 @@
+use std::path::Path;
+use std::str::FromStr;
+
+use lazy_static::lazy_static;
+use regex::Regex;
+
+use crate::common::{Codepoint, CodepointIter, UcdFile, UcdFileByCodepoint};
+use crate::error::Error;
+
+/// Represents a single row in the `ArabicShaping.txt` file.
+///
+/// The field names were taken from the header of ArabicShaping.txt.
+#[derive(Clone, Debug, Default, Eq, PartialEq)]
+pub struct ArabicShaping {
+    /// The codepoint corresponding to this row.
+    pub codepoint: Codepoint,
+    /// A short schematic name for the codepoint.
+    ///
+    /// The schematic name is descriptive of the shape, based as consistently as
+    /// possible on a name for the skeleton and then the diacritic marks applied
+    /// to the skeleton, if any.  Note that this schematic name is considered a
+    /// comment, and does not constitute a formal property value.
+    pub schematic_name: String,
+    /// The "joining type" of this codepoint.
+    pub joining_type: JoiningType,
+    /// The "joining group" of this codepoint.
+    pub joining_group: String,
+}
+
+/// The Joining_Type field read from ArabicShaping.txt
+#[derive(Clone, Copy, Debug, Eq, PartialEq)]
+pub enum JoiningType {
+    RightJoining,
+    LeftJoining,
+    DualJoining,
+    JoinCausing,
+    NonJoining,
+    Transparent,
+}
+
+impl JoiningType {
+    pub fn as_str(&self) -> &str {
+        match self {
+            JoiningType::RightJoining => "R",
+            JoiningType::LeftJoining => "L",
+            JoiningType::DualJoining => "D",
+            JoiningType::JoinCausing => "C",
+            JoiningType::NonJoining => "U",
+            JoiningType::Transparent => "T",
+        }
+    }
+}
+
+impl Default for JoiningType {
+    fn default() -> JoiningType {
+        JoiningType::NonJoining
+    }
+}
+
+impl FromStr for JoiningType {
+    type Err = Error;
+
+    fn from_str(s: &str) -> Result<JoiningType, Error> {
+        match s {
+            "R" => Ok(JoiningType::RightJoining),
+            "L" => Ok(JoiningType::LeftJoining),
+            "D" => Ok(JoiningType::DualJoining),
+            "C" => Ok(JoiningType::JoinCausing),
+            "U" => Ok(JoiningType::NonJoining),
+            "T" => Ok(JoiningType::Transparent),
+            _ => err!(
+                "unrecognized joining type: '{}' \
+                 (must be one of R, L, D, C, U or T)",
+                s
+            ),
+        }
+    }
+}
+
+impl UcdFile for ArabicShaping {
+    fn relative_file_path() -> &'static Path {
+        Path::new("ArabicShaping.txt")
+    }
+}
+
+impl UcdFileByCodepoint for ArabicShaping {
+    fn codepoints(&self) -> CodepointIter {
+        self.codepoint.into_iter()
+    }
+}
+
+impl FromStr for ArabicShaping {
+    type Err = Error;
+
+    fn from_str(line: &str) -> Result<ArabicShaping, Error> {
+        lazy_static! {
+            static ref PARTS: Regex = Regex::new(
+                r"(?x)
+                ^
+                \s*(?P<codepoint>[A-F0-9]+)\s*;
+                \s*(?P<name>[^;]+)\s*;
+                \s*(?P<joining_type>[^;]+)\s*;
+                \s*(?P<joining_group>[^;]+)
+                $
+                "
+            )
+            .unwrap();
+        };
+        let caps = match PARTS.captures(line.trim()) {
+            Some(caps) => caps,
+            None => return err!("invalid ArabicShaping line"),
+        };
+
+        Ok(ArabicShaping {
+            codepoint: caps["codepoint"].parse()?,
+            schematic_name: caps["name"].to_string(),
+            joining_type: caps["joining_type"].parse()?,
+            joining_group: caps["joining_group"].to_string(),
+        })
+    }
+}
+
+#[cfg(test)]
+mod tests {
+    use crate::common::Codepoint;
+
+    use super::{ArabicShaping, JoiningType};
+
+    fn codepoint(n: u32) -> Codepoint {
+        Codepoint::from_u32(n).unwrap()
+    }
+
+    fn s(string: &str) -> String {
+        string.to_string()
+    }
+
+    #[test]
+    fn parse1() {
+        let line = "0600; ARABIC NUMBER SIGN; U; No_Joining_Group\n";
+        let data: ArabicShaping = line.parse().unwrap();
+        assert_eq!(
+            data,
+            ArabicShaping {
+                codepoint: codepoint(0x0600),
+                schematic_name: s("ARABIC NUMBER SIGN"),
+                joining_type: JoiningType::NonJoining,
+                joining_group: s("No_Joining_Group")
+            }
+        );
+    }
+
+    #[test]
+    fn parse2() {
+        let line = "063D; FARSI YEH WITH INVERTED V ABOVE; D; FARSI YEH\n";
+        let data: ArabicShaping = line.parse().unwrap();
+        assert_eq!(
+            data,
+            ArabicShaping {
+                codepoint: codepoint(0x063D),
+                schematic_name: s("FARSI YEH WITH INVERTED V ABOVE"),
+                joining_type: JoiningType::DualJoining,
+                joining_group: s("FARSI YEH")
+            }
+        );
+    }
+
+    #[test]
+    fn parse3() {
+        let line =
+            "10D23; HANIFI ROHINGYA DOTLESS KINNA YA WITH DOT ABOVE; D; HANIFI ROHINGYA KINNA YA\n";
+        let data: ArabicShaping = line.parse().unwrap();
+        assert_eq!(
+            data,
+            ArabicShaping {
+                codepoint: codepoint(0x10D23),
+                schematic_name: s(
+                    "HANIFI ROHINGYA DOTLESS KINNA YA WITH DOT ABOVE"
+                ),
+                joining_type: JoiningType::DualJoining,
+                joining_group: s("HANIFI ROHINGYA KINNA YA")
+            }
+        );
+    }
+}