add hpatch interface code

android/jni/DownloadTask.c

@@ -108,4 +108,11 @@ JNIEXPORT jbyteArray JNICALL Java_cn_reactnative_modules_update_DownloadTask_bsd
     (*env)->ReleaseByteArrayElements(env, origin, originPtr, JNI_ABORT);
     (*env)->ReleaseByteArrayElements(env, patch, patchPtr, JNI_ABORT);
     return ret;
+}
+
+
+JNIEXPORT jbyteArray JNICALL Java_cn_reactnative_modules_update_DownloadTask_hdiffPatch
+        (JNIEnv *env, jobject self, jbyteArray origin, jbyteArray patch){
+    //todo: 
+    return 0;
 }

android/jni/cn_reactnative_modules_update_DownloadTask.h

@@ -15,6 +15,14 @@ extern "C" {
 JNIEXPORT jbyteArray JNICALL Java_cn_reactnative_modules_update_DownloadTask_bsdiffPatch
   (JNIEnv *, jclass, jbyteArray, jbyteArray);
 
+/*
+ * Class:     cn_reactnative_modules_update_DownloadTask
+ * Method:    hdiffPatch
+ * Signature: ([B[B)[B
+ */
+JNIEXPORT jbyteArray JNICALL Java_cn_reactnative_modules_update_DownloadTask_hdiffPatch
+  (JNIEnv *, jclass, jbyteArray, jbyteArray);
+
 #ifdef __cplusplus
 }
 #endif

android/jni/hpatch.c

@@ -0,0 +1,13 @@
+// hpatch.c
+// Copyright 2021 housisong, All rights reserved
+
+int hpatch_by_mem(const uint8_t* old,size_t oldsize, uint8_t* newBuf,size_t newsize,
+                  const uint8_t* pat,size_t patsize){
+    //todo:
+    return -1;
+}
+
+int hpatch_by_file(const char* oldfile, const char* newfile, const char* patchfile){
+    //todo:
+    return -1;
+}

android/jni/hpatch.h

@@ -0,0 +1,13 @@
+// hpatch.h 
+// import HDiffPatch, support patchfile created by "hdiffz -SD -C-lzma2 oldfile newfile patchfile" 
+// Copyright 2021 housisong, All rights reserved
+
+#ifndef HDIFFPATCH_PATCH_H
+#define HDIFFPATCH_PATCH_H
+# include <stdint.h> //for uint8_t
+
+int hpatch_by_mem(const uint8_t* old,size_t oldsize, uint8_t* newBuf,size_t newsize,
+                  const uint8_t* pat,size_t patsize);
+int hpatch_by_file(const char* oldfile, const char* newfile, const char* patchfile);
+
+#endif //HDIFFPATCH_PATCH_H

android/src/main/java/cn/reactnative/modules/update/DownloadTask.java

@@ -134,9 +134,10 @@ class DownloadTask extends AsyncTask<DownloadTaskParams, long[], Void> {
 
     }
 
-    byte[] buffer = new byte[1024];
+    byte[] buffer = new byte[1024*4];
 
     private static native byte[] bsdiffPatch(byte[] origin, byte[] patch);
+    private static native byte[] hdiffPatch(byte[] origin, byte[] patch);
 
     private void unzipToFile(ZipInputStream zis, File fmd) throws IOException {
         int count;