Script for generating reduced-langtags.json (BL-13305)

Plus a few other small bug fixes and tweaks.

scripts/langtags/README.md

@@ -0,0 +1,33 @@
+## Generating a new reduced-langtags.json file
+
+Simply run the `reduce.sh` script from this directory like this inside the git bash
+shell window:
+```
+./reduce.sh
+```
+If you want to ensure a fresh copy of the `langtags.json` file, delete any
+existing copy in this folder first:
+```
+rm langtags.json
+./reduce.sh
+```
+(An existing copy of `langtags.json` is used for processing to save download time.)
+
+After generating a new version of the `reduced-langtags.json` file, it will need to
+be copied (or moved) to the src/components/AggregateGrid folder:
+```
+cp reduced-langtags.json ../../src/components/AggregateGrid
+```
+or
+```
+mv reduced-langtags.json ../../src/components/AggregateGrid
+```
+
+### Developer notes
+
+There is no need to use either npm or yarn as far as I can tell.  Perhaps node is
+trying to keep up with bun?
+
+The shell script may need to have its line endings changed if you want to run it
+under another shell such as the Cygwin bash shell window or the Windows Subsystem
+for Linux shell window.

scripts/langtags/extract-reduction.js

@@ -0,0 +1,38 @@
+import * as fs from "fs";
+import * as path from "path";
+import { fileURLToPath } from "url";
+
+const __filename = fileURLToPath(import.meta.url); // get the resolved path to the file
+const __dirname = path.dirname(__filename); // get the name of the directory
+
+const langtags = JSON.parse(
+    fs.readFileSync(path.join(__dirname, "langtags.json"), "utf8")
+);
+
+const reduced_langtags = langtags
+    .filter(
+        (langtag) => !!langtag.full
+        // I'm not convinced that the following three lines are a good idea.
+        // && !(/^[a-z]{2,3}-[A-Z]{2}$/.test(langtag.tag))
+        // && !(/^[a-z]{2,3}-[A-Z][a-z]{3}$/.test(langtag.tag))
+        // && !(/^[a-z]{2,3}-[A-Z][a-z]{3}-[A-Z]{2}$/.test(langtag.tag))
+    )
+    .map((langtag) => {
+        const reduced = {
+            tag: langtag.tag,
+            name: langtag.name,
+            names: langtag.names,
+            region: langtag.region,
+            regionname: langtag.regionname,
+            // we aren't using these fields currently
+            //regions: langtag.regions,
+            //iso639_3: langtag.iso639_3 && langtag.iso639_3 !== langtag.tag ? langtag.iso639_3 : undefined,
+        };
+        return reduced;
+    });
+
+fs.writeFileSync(
+    path.join(__dirname, "reduced-langtags.json"),
+    JSON.stringify(reduced_langtags, null, 2),
+    "utf8"
+);

scripts/langtags/package.json

@@ -0,0 +1,11 @@
+{
+    "name": "reduce-langtags",
+    "version": "1.0.0",
+    "type": "module",
+    "main": "reduce-langtags.js",
+    "dependencies": {
+        "fs": "^0.0.1-security",
+        "path": "0.12.7",
+        "url": "0.11.0"
+    }
+}

scripts/langtags/reduce.sh

@@ -0,0 +1,8 @@
+#!/bin/sh
+# download langtags.json if we don't already have it
+if [ ! -f langtags.json ]; then
+    wget 'https://ldml.api.sil.org/index.html?query=langtags&ext=json' -O langtags.json
+fi
+
+# run the javascript program to extract the reduced data
+node extract-reduction.js

src/components/AggregateGrid/AggregateGridInterfaces.ts

@@ -4,7 +4,8 @@ export interface ILangTagData {
     names?: string[];
     region: string;
     regionname: string;
-    regions?: string[];
+    //regions?: string[];
+    //iso639_3?: string;
 }
 
 // If we go back to using the country id data, we'll need this interface.