57 lines
2.3 KiB
C
57 lines
2.3 KiB
C
//
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// Created by DengYun on 3/31/16.
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//
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#include "cn_reactnative_modules_update_DownloadTask.h"
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#include "hpatch.h"
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#define _check(v,errInfo) do{ if (!(v)) { _isError=hpatch_TRUE; _errInfo=errInfo; goto _clear; } }while(0)
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JNIEXPORT jbyteArray JNICALL Java_cn_reactnative_modules_update_DownloadTask_hdiffPatch
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(JNIEnv *env, jobject self, jbyteArray origin, jbyteArray patch){
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hpatch_BOOL _isError=hpatch_FALSE;
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const char* _errInfo="";
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jbyte* originPtr = (*env)->GetByteArrayElements(env, origin, NULL);
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size_t originLength = (*env)->GetArrayLength(env, origin);
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jbyte* patchPtr = (*env)->GetByteArrayElements(env, patch, NULL);
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size_t patchLength = (*env)->GetArrayLength(env, patch);
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jbyteArray ret = NULL;
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jbyte* outPtr = NULL;
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size_t newsize = 0;
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hpatch_singleCompressedDiffInfo patInfo;
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_check(((originLength==0)||originPtr) && patchPtr && (patchLength>0),"Corrupt patch");
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_check(kHPatch_ok==hpatch_getInfo_by_mem(&patInfo,(const uint8_t*)patchPtr,patchLength),"Error info in hpatch");
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_check(originLength==patInfo.oldDataSize,"Error oldDataSize in hpatch");
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newsize=(size_t)patInfo.newDataSize;
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if (sizeof(size_t)!=sizeof(hpatch_StreamPos_t))
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_check(newsize==patInfo.newDataSize,"Error newDataSize in hpatch");
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ret = (*env)->NewByteArray(env,newsize);
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_check(ret,"Error JNIEnv::NewByteArray()");
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if (newsize>0) {
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outPtr = (*env)->GetByteArrayElements(env, ret, NULL);
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_check(outPtr,"Corrupt JNIEnv::GetByteArrayElements");
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}
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_check(kHPatch_ok==hpatch_by_mem((const uint8_t*)originPtr,originLength,(uint8_t*)outPtr,newsize,
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(const uint8_t*)patchPtr,patchLength,&patInfo),"hpacth");
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_clear:
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if (outPtr) (*env)->ReleaseByteArrayElements(env, ret, outPtr, (_isError?JNI_ABORT:0));
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if (originPtr) (*env)->ReleaseByteArrayElements(env, origin, originPtr, JNI_ABORT);
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if (patchPtr) (*env)->ReleaseByteArrayElements(env, patch, patchPtr, JNI_ABORT);
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if (_isError){
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jclass newExcCls = NULL;
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if (ret){
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(*env)->DeleteLocalRef(env, ret);
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ret = NULL;
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}
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newExcCls = (*env)->FindClass(env, "java/lang/Error");
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if (newExcCls != NULL) // Unable to find the new exception class, give up.
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(*env)->ThrowNew(env, newExcCls, _errInfo);
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}
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return ret;
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}
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