From e11849e716d7d63d0ff2eee8e66b93406c1ef547 Mon Sep 17 00:00:00 2001
From: Rachel Guo <35738743+YUNQIUGUO@users.noreply.github.com>
Date: Thu, 14 Sep 2023 10:58:25 -0700
Subject: [PATCH] Configure StringNormalizer `default_locale` for _APPLE_
 system  (#17339)

### Description
<!-- Describe your changes. -->

As title.

iOS language code uses different syntax for specifying language
code/region code:
https://developer.apple.com/documentation/xcode/choosing-localization-regions-and-scripts

current `default_locale` is not working for iOS.


### Motivation and Context
<!-- - Why is this change required? What problem does it solve?
- If it fixes an open issue, please link to the issue here. -->

Issue:
https://github.com/microsoft/onnxruntime/issues/17017

---------

Co-authored-by: rachguo <rachguo@rachguos-Mini.attlocal.net>
Co-authored-by: Edward Chen <18449977+edgchen1@users.noreply.github.com>
---
 .../core/providers/cpu/nn/string_normalizer.cc        | 11 ++++++++++-
 1 file changed, 10 insertions(+), 1 deletion(-)

diff --git a/onnxruntime/core/providers/cpu/nn/string_normalizer.cc b/onnxruntime/core/providers/cpu/nn/string_normalizer.cc
index 330b92d4a8..27407e9999 100644
--- a/onnxruntime/core/providers/cpu/nn/string_normalizer.cc
+++ b/onnxruntime/core/providers/cpu/nn/string_normalizer.cc
@@ -201,7 +201,16 @@ class Utf8Converter {
 
 #endif
 
-const std::string default_locale("en_US.UTF-8");  // All non-MS
+#if defined(__APPLE__)
+#include <TargetConditionals.h>
+#if TARGET_OS_IPHONE || TARGET_OS_SIMULATOR
+const std::string default_locale("en-US.UTF-8");
+#else
+const std::string default_locale("en_US.UTF-8");  // Other kinds of Apple Platforms including MacOS, etc
+#endif
+#else
+const std::string default_locale("en_US.UTF-8");  // All non-MS and not Apple
+#endif
 
 #endif  // _MSC_VER