Repo created

iphone/Maps/Core/TextToSpeech/TTSTester.mm

@@ -0,0 +1,59 @@
+#import "TTSTester.h"
+
+#include "LocaleTranslator.h"
+#include "MWMTextToSpeech.h"
+
+#include "base/logging.hpp"
+
+@implementation TTSTester
+
+static NSString * const NotFoundDelimiter = @"__not_found__";
+
+NSArray<NSString *> * testStrings;
+NSString * testStringsLanguage;
+
+int testStringIndex;
+
+- (void)playRandomTestString {
+  NSString * currentTTSLanguage = MWMTextToSpeech.savedLanguage;
+  if (testStrings == nil || ![currentTTSLanguage isEqualToString:testStringsLanguage]) {
+    testStrings = [self getTestStrings:currentTTSLanguage];
+    if (testStrings == nil) {
+      LOG(LWARNING, ("Couldn't load TTS test strings"));
+      return;
+    }
+    testStringsLanguage = currentTTSLanguage;
+  }
+  
+  [[MWMTextToSpeech tts] play:testStrings[testStringIndex]];
+  
+  if (++testStringIndex >= testStrings.count)
+    testStringIndex = 0;
+}
+
+- (NSArray<NSString *> *)getTestStrings:(NSString *)language {
+  NSString * twineLanguage = [NSString stringWithUTF8String:locale_translator::bcp47ToTwineLanguage(language).c_str()];
+  NSString * languagePath = [NSBundle.mainBundle pathForResource:twineLanguage ofType:@"lproj"];
+  if (languagePath == nil) {
+    LOG(LWARNING, ("Couldn't find translation file for ", twineLanguage.UTF8String));
+    return nil;
+  }
+  NSBundle * bundle = [NSBundle bundleWithPath:languagePath];
+  
+  NSMutableArray * appTips = [NSMutableArray new];
+  for (int idx = 0; ; idx++) {
+    NSString * appTipKey = [NSString stringWithFormat:@"app_tip_%02d", idx];
+    NSString * appTip = [bundle localizedStringForKey:appTipKey value:NotFoundDelimiter table:nil];
+    if ([appTip isEqualToString:NotFoundDelimiter])
+      break;
+    [appTips addObject:appTip];
+  }
+  
+  // shuffle
+  for (NSUInteger i = appTips.count; i > 1; i--)
+    [appTips exchangeObjectAtIndex:i - 1 withObjectAtIndex:arc4random_uniform((u_int32_t)i)];
+  
+  return appTips;
+}
+
+@end