UPDATE: Dump of initial files

generate_locale/src/numbers.rs

@@ -0,0 +1,65 @@
+use std::collections::HashMap;
+use std::fs;
+
+use serde::{Deserialize, Serialize};
+use serde_json::Value;
+
+use crate::constants::{NumbersProperties, LOCAL_TYPE};
+
+#[derive(Serialize, Deserialize)]
+struct CaGCalendarsFormat {
+    format: HashMap<String, HashMap<String, String>>,
+}
+#[derive(Serialize, Deserialize)]
+struct CaGCalendarsII {
+    months: CaGCalendarsFormat,
+    days: CaGCalendarsFormat,
+}
+
+#[derive(Serialize, Deserialize)]
+struct NumbersJSONId {
+    identity: Value,
+    numbers: NumbersProperties,
+}
+
+#[derive(Serialize, Deserialize)]
+struct NumbersJSON {
+    main: HashMap<String, NumbersJSONId>,
+}
+
+pub fn get_numbers_formatting(
+    cldr_dir: &str,
+    locale_id: &str,
+) -> Result<NumbersProperties, String> {
+    let numbers_file = format!(
+        "{}cldr-json/cldr-numbers-{}/main/{}/numbers.json",
+        cldr_dir, LOCAL_TYPE, locale_id
+    );
+
+    let contents = fs::read_to_string(numbers_file).or(Err("Failed reading 'numbers.json'"))?;
+    let numbers_json: &NumbersJSON =
+        &serde_json::from_str(&contents).or(Err("Failed parsing 'numbers.json' file"))?;
+    // Grouping is either
+    // * #,##,##0.### (indian way)
+    // * #,##0.### (standard)
+    // * 0.###### (posix)
+    // anything else is an error
+    let grouping_str = &numbers_json.main[locale_id]
+        .numbers
+        .decimal_formats
+        .standard;
+    let _grouping = if grouping_str == "#,##0.###" {
+        "standard"
+    } else if grouping_str == "#,##,##0.###" {
+        "indian"
+    } else if grouping_str == "0.######" {
+        "posix"
+    } else {
+        let message = format!(
+            "Unexpected grouping {} in locale {}",
+            grouping_str, locale_id
+        );
+        return Err(message);
+    };
+    Ok(numbers_json.main[locale_id].numbers.clone())
+}