diff --git a/libchinese-segmentation/chinese-segmentation.cpp b/libchinese-segmentation/chinese-segmentation.cpp
index ea80a67..477f5b7 100644
--- a/libchinese-segmentation/chinese-segmentation.cpp
+++ b/libchinese-segmentation/chinese-segmentation.cpp
@@ -52,10 +52,10 @@ ChineseSegmentation *ChineseSegmentation::getInstance() {
     return global_instance_chinese_segmentation;
 }
 
-QVector<SKeyWord> ChineseSegmentation::callSegement(QString str) {
-    std::string s;
-    s = str.toStdString();
-    str.squeeze();
+QVector<SKeyWord> ChineseSegmentation::callSegement(std::string s) {
+//    std::string s;
+//    s = str.toStdString();
+//    str.squeeze();
 
     const size_t topk = -1;
     std::vector<cppjieba::KeywordExtractor::Word> keywordres;
diff --git a/libchinese-segmentation/chinese-segmentation.h b/libchinese-segmentation/chinese-segmentation.h
index c027608..4a12c23 100644
--- a/libchinese-segmentation/chinese-segmentation.h
+++ b/libchinese-segmentation/chinese-segmentation.h
@@ -47,7 +47,7 @@ class CHINESESEGMENTATION_EXPORT ChineseSegmentation {
 public:
     static ChineseSegmentation *getInstance();
     ~ChineseSegmentation();
-    QVector<SKeyWord> callSegement(QString str);
+    QVector<SKeyWord> callSegement(std::string s);
     void convert(std::vector<cppjieba::KeywordExtractor::Word>& keywordres, QVector<SKeyWord>& kw);
 private:
     static QMutex m_mutex;
diff --git a/libsearch/index/construct-document.cpp b/libsearch/index/construct-document.cpp
index a479ba2..5be7af1 100644
--- a/libsearch/index/construct-document.cpp
+++ b/libsearch/index/construct-document.cpp
@@ -111,7 +111,7 @@ void ConstructDocumentForContent::run() {
     QString uniqueterm = QString::fromStdString(FileUtils::makeDocUterm(m_path));
     QString upTerm = QString::fromStdString(FileUtils::makeDocUterm(m_path.section("/", 0, -2, QString::SectionIncludeLeadingSep)));
 
-    QVector<SKeyWord> term = ChineseSegmentation::getInstance()->callSegement(content.left(20480000));
+    QVector<SKeyWord> term = ChineseSegmentation::getInstance()->callSegement(content.left(20480000).toStdString());
 
     Document doc;
     doc.setData(content);
diff --git a/libsearch/index/document.cpp b/libsearch/index/document.cpp
index 6200c0c..68b21df 100644
--- a/libsearch/index/document.cpp
+++ b/libsearch/index/document.cpp
@@ -20,7 +20,7 @@
 #include "document.h"
 #include <QDebug>
 using namespace Zeeker;
-void Document::setData(QString data) {
+void Document::setData(QString &data) {
     if(data.isEmpty())
         return;
     m_document.set_data(data.toStdString());
diff --git a/libsearch/index/document.h b/libsearch/index/document.h
index f6b8c20..d4549e8 100644
--- a/libsearch/index/document.h
+++ b/libsearch/index/document.h
@@ -39,7 +39,7 @@ public:
         m_index_text = other.m_index_text;
         m_unique_term = other.m_unique_term;
     }
-    void setData(QString data);
+    void setData(QString &data);
     void addPosting(std::string term, QVector<size_t> offset, int weight = 1);
     void addPosting(std::string term, unsigned int offset, int weight = 1);
     void addTerm(QString term);
diff --git a/libsearch/index/index-generator.cpp b/libsearch/index/index-generator.cpp
index e650271..8c02122 100644
--- a/libsearch/index/index-generator.cpp
+++ b/libsearch/index/index-generator.cpp
@@ -354,7 +354,7 @@ Document IndexGenerator::GenerateContentDocument(const QString &path) {
     QString upTerm;
     FileReader::getTextContent(path, content);
 
-    term = ChineseSegmentation::getInstance()->callSegement(content);
+    term = ChineseSegmentation::getInstance()->callSegement(content.toStdString());
 //    QStringList  term = content.split("");
 
     doc.setData(content);
diff --git a/libsearch/index/search-manager.cpp b/libsearch/index/search-manager.cpp
index 68e8605..ce75385 100644
--- a/libsearch/index/search-manager.cpp
+++ b/libsearch/index/search-manager.cpp
@@ -273,7 +273,7 @@ int FileContentSearch::keywordSearchContent() {
                 ret.erase(ret.begin(), ret.end());
                 ::friso::ResultMap().swap(ret);
         */
-        QVector<SKeyWord> sKeyWord = ChineseSegmentation::getInstance()->callSegement(m_keyword);
+        QVector<SKeyWord> sKeyWord = ChineseSegmentation::getInstance()->callSegement(m_keyword.toStdString());
         //Creat a query
         std::string words;
         for(int i = 0; i < sKeyWord.size(); i++) {
@@ -419,6 +419,7 @@ void DirectSearch::run() {
     // QDir::Hidden
     dir.setFilter(QDir::Dirs | QDir::Files | QDir::NoDotAndDotDot);
     dir.setSorting(QDir::DirsFirst);
+    QStringList blockList = GlobalSettings::getInstance()->getBlockDirs();
     while(!bfs.empty()) {
         dir.setPath(bfs.dequeue());
         list = dir.entryInfoList();
@@ -426,8 +427,6 @@ void DirectSearch::run() {
             if (i.isDir() && (!(i.isSymLink()))) {
 
                 bool findIndex = false;
-
-                QStringList blockList = GlobalSettings::getInstance()->getBlockDirs();
                 for (QString j : blockList) {
                     if (i.absoluteFilePath().startsWith(j.prepend("/"))) {
                         findIndex = true;
diff --git a/libsearch/parser/binary-parser.cpp b/libsearch/parser/binary-parser.cpp
index 698297a..0f927c5 100644
--- a/libsearch/parser/binary-parser.cpp
+++ b/libsearch/parser/binary-parser.cpp
@@ -4457,15 +4457,14 @@ bool bReadBuffer(FILE *pFile, ULONG ulStartBlock,
     ULONG	ulBegin, ulIndex;
     size_t	tLen;
 
-    for(ulIndex = ulStartBlock;
-            ulIndex != END_OF_CHAIN && tToRead != 0;
-            ulIndex = aulBlockDepot[ulIndex]) {
+    for(ulIndex = ulStartBlock;ulIndex != END_OF_CHAIN && tToRead != 0;ulIndex = aulBlockDepot[ulIndex]) {
         if(ulIndex >= (ULONG)tBlockDepotLen) {
             if(tBlockSize >= BIG_BLOCK_SIZE) {
                 qWarning() << "The Big Block Depot is damaged";
             } else {
                 qWarning() << "The Small Block Depot is damaged";
             }
+            return (tToRead == 0);
         }
         if(ulOffset >= (ULONG)tBlockSize) {
             ulOffset -= tBlockSize;