新增html文件文本内容解析及搜索功能；

libsearch/common.h

@@ -38,7 +38,8 @@ static const QMap<QString, bool> targetFileTypeMap = {
     {"pps", true},
     {"dps", true},
     {"et", true},
-    {"pdf", true}
+    {"pdf", true},
+    {"html", true}
 };
 
 static const QMap<QString, bool> targetPhotographTypeMap = {

libsearch/file-utils.cpp

@@ -945,6 +945,10 @@ bool FileUtils::isEncrypedOrUnreadable(QString path)
         if(strsfx.endsWith("txt"))
             return false;
         return true;
+    } else if(name == "text/html") {
+        if(strsfx.endsWith("html"))
+            return false;
+        return true;
     } else if(type.inherits("application/msword") || type.name() == "application/x-ole-storage") {
         if(strsfx == "doc" || strsfx == "dot" || strsfx == "wps" || strsfx == "ppt" ||
                 strsfx == "pps" || strsfx == "dps" || strsfx == "et" || strsfx == "xls") {

libsearch/index/file-reader.cpp

@@ -35,7 +35,7 @@ void FileReader::getTextContent(QString path, QString &textContent, QString &suf
         FileUtils::getPptxTextContent(path, textContent);
     } else if (suffix == "xlsx") {
         FileUtils::getXlsxTextContent(path, textContent);
-    } else if (suffix == "txt") {
+    } else if (strsfx == "txt" or strsfx == "html") {
         FileUtils::getTxtContent(path, textContent);
     } else if (suffix == "doc" || suffix == "dot" || suffix == "wps" || suffix == "ppt" ||
             suffix == "pps" || suffix == "dps" || suffix == "et" || suffix == "xls") {