build.js now updates locales with local en changes

CONTRIBUTING.md

@@ -69,6 +69,9 @@ Then, add the new string to `data/core.yaml` or `data/presets.yaml` (depending
 on whether it pertains to core code or presets). The translation system,
 Transiflex, will automatically detect the change.
 
+Use `make` to build the translations with the local changes.
+`make translate` can be used to pull the latest translations from Transifex.
+
 ## Javascript
 
 We use the [Airbnb style for Javascript](https://github.com/airbnb/javascript) with

build.js

@@ -1,7 +1,8 @@
 var fs = require('fs'),
     path = require('path'),
     glob = require('glob'),
-    YAML = require('js-yaml');
+    YAML = require('js-yaml'),
+    _ = require('./js/lib/lodash');
 
 function read(f) {
     return JSON.parse(fs.readFileSync(f));
@@ -60,3 +61,10 @@ fs.writeFileSync('data/data.js', 'iD.data = ' + JSON.stringify({
         fields: rp('fields.json')
     }
 }, null, 4) + ';');
+
+// Push changes from data/core.yaml into data/locales.js
+var core = YAML.load(fs.readFileSync('data/core.yaml', 'utf8'));
+var presets = YAML.load(fs.readFileSync('data/presets.yaml', 'utf8'));
+var en = _.merge(core, presets);
+var out = 'locale.en = ' + JSON.stringify(en.en, null, 4) + ';\n';
+fs.writeFileSync('data/locales.js', fs.readFileSync('data/locales.js', 'utf8').replace(/locale.en =[^;]*;/, out));

data/update_locales.js

@@ -1,3 +1,5 @@
+/* Downloads the latest translations from Transifex */
+
 var request = require('request'),
     yaml = require('js-yaml'),
     fs = require('fs'),
@@ -32,7 +34,7 @@ asyncMap(resources, getResource, function(err, locales) {
     });
 
     for (var i in locale) {
-        out += 'locale.' + i + ' = ' + JSON.stringify(locale[i], null, 4) + ';';
+        out += 'locale.' + i + ' = ' + JSON.stringify(locale[i], null, 4) + ';\n';
     }
     fs.writeFileSync(outfile, out);
 });