Translate tasks.

build.gradle

@@ -23,6 +23,7 @@ buildscript {
 apply plugin: 'com.android.application'
 apply plugin: 'androidx.navigation.safeargs'
 apply plugin: 'witness'
+apply from: 'translations.gradle'
 apply from: 'witness-verifications.gradle'
 
 repositories {
@@ -431,19 +432,6 @@ def getLastCommitTimestamp() {
     }
 }
 
-/**
- * Discovers supported languages listed as under the res/values- directory.
- */
-static def autoResConfig() {
-    def files = new ArrayList<String>()
-    def root = new File('res')
-    root.eachFile { f -> files.add(f.name) }
-    ['en'] + files.collect { f -> f =~ /^values-([a-z]{2}(-r[A-Z]{2})?)$/ }
-         .findAll { matcher -> matcher.find() }
-         .collect { matcher -> matcher.group(1) }
-         .sort()
-}
-
 task qa {
   group 'Verification'
   description 'Quality Assurance. Run before pushing.'

translations.gradle

@@ -0,0 +1,73 @@
+import groovy.io.FileType
+import groovy.transform.stc.ClosureParams
+import groovy.transform.stc.SimpleType
+
+ext {
+    autoResConfig = this.&autoResConfig
+}
+
+def allStringsResourceFiles(@ClosureParams(value = SimpleType.class, options = ['java.io.File']) Closure c) {
+    file('res').eachFileRecurse(FileType.FILES) { f ->
+        if (f.name == 'strings.xml') {
+            c(f)
+        }
+    }
+}
+
+/**
+ * Discovers supported languages listed as under the res/values- directory.
+ */
+def autoResConfig() {
+    def files = []
+    allStringsResourceFiles { f ->
+        files.add(f.parentFile.name)
+    }
+    ['en'] + files.collect { f -> f =~ /^values-([a-z]{2}(-r[A-Z]{2})?)$/ }
+            .findAll { matcher -> matcher.find() }
+            .collect { matcher -> matcher.group(1) }
+            .sort()
+}
+
+task pullTranslations(type: Exec) {
+    group 'Translate'
+    description 'Pull translations, requires transifex client and api key.'
+    commandLine 'tx', 'pull', '-a', '--minimum-perc=80', '--force'
+}
+
+task replaceEllipsis {
+    group 'Translate'
+    description 'Process strings for ellipsis characters.'
+    doLast {
+        allStringsResourceFiles { f ->
+            def before = f.text
+            def after = f.text.replace('...', '…')
+            if (before != after) {
+                f.text = after
+                logger.info("$f.parentFile.name/$f.name...updated")
+            }
+        }
+    }
+    mustRunAfter pullTranslations
+}
+
+task cleanApostropheErrors {
+    group 'Translate'
+    description 'Fix transifex apostrophe string errors.'
+    doLast {
+        allStringsResourceFiles { f ->
+            def before = f.text
+            def after = before.replaceAll(/([^\\=08])(')/,'$1\\\\\'')
+            if (before != after) {
+                f.text = after
+                logger.info("$f.parentFile.name/$f.name...updated")
+            }
+        }
+    }
+    mustRunAfter replaceEllipsis
+}
+
+task translate {
+    group 'Translate'
+    description 'Pull translations and post-process for ellipsis and apostrophes.'
+    dependsOn pullTranslations, replaceEllipsis, cleanApostropheErrors
+}