3 files changed, 22 insertions, 0 deletions
diff --git a/native/jni/src/utils/char_utils.cpp b/native/jni/src/utils/char_utils.cpp
index adc474b4c..b17e0847d 100644
--- a/native/jni/src/utils/char_utils.cpp
+++ b/native/jni/src/utils/char_utils.cpp
@@ -22,6 +22,9 @@
 
 namespace latinime {
 
+const int CharUtils::MIN_UNICODE_CODE_POINT = 0;
+const int CharUtils::MAX_UNICODE_CODE_POINT = 0x10FFFF;
+
 struct LatinCapitalSmallPair {
   unsigned short capital;
   unsigned short small;
diff --git a/native/jni/src/utils/char_utils.h b/native/jni/src/utils/char_utils.h
index 239419d5b..634c45b04 100644
--- a/native/jni/src/utils/char_utils.h
+++ b/native/jni/src/utils/char_utils.h
@@ -86,12 +86,19 @@ class CharUtils {
         return spaceCount;
     }
 
+    static AK_FORCE_INLINE int isInUnicodeSpace(const int codePoint) {
+        return codePoint >= MIN_UNICODE_CODE_POINT && codePoint <= MAX_UNICODE_CODE_POINT;
+    }
+
     static unsigned short latin_tolower(const unsigned short c);
     static const std::vector<int> EMPTY_STRING;
 
  private:
     DISALLOW_IMPLICIT_CONSTRUCTORS(CharUtils);
 
+    static const int MIN_UNICODE_CODE_POINT;
+    static const int MAX_UNICODE_CODE_POINT;
+
     /**
      * Table mapping most combined Latin, Greek, and Cyrillic characters
      * to their base characters.  If c is in range, BASE_CHARS[c] == c
diff --git a/native/jni/src/utils/jni_data_utils.h b/native/jni/src/utils/jni_data_utils.h
index 2ce02dc05..0e393e315 100644
--- a/native/jni/src/utils/jni_data_utils.h
+++ b/native/jni/src/utils/jni_data_utils.h
@@ -65,6 +65,18 @@ class JniDataUtils {
         return attributeMap;
     }
 
+    static void outputCodePoints(JNIEnv *env, jintArray intArrayToOutputCodePoints, const int start,
+            const int maxLength, const int *const codePoints, const int codePointCount,
+            const bool needsNullTermination) {
+        const int outputCodePointCount = std::min(maxLength, codePointCount);
+        env->SetIntArrayRegion(intArrayToOutputCodePoints, start, outputCodePointCount, codePoints);
+        if (needsNullTermination && outputCodePointCount < maxLength) {
+            const int terminal = 0;
+            env->SetIntArrayRegion(intArrayToOutputCodePoints, start + outputCodePointCount,
+                    1 /* len */, &terminal);
+        }
+    }
+
  private:
     DISALLOW_IMPLICIT_CONSTRUCTORS(JniDataUtils);
 };