增加setPrefix接口

sdk/oldwebscan/libwebscan_jni/com_huagao_scanner_DeviceManager.cpp

@@ -49,13 +49,23 @@ static int indexPatch=0;
 std::mutex m_mutex;
 
 static HG_CACHEIMGFORMAT m_cacheimgformat = HG_CJPG;
-
+static std::string m_default_prefix = "1000";
 static std::map< HG_CACHEIMGFORMAT, std::string> m_mapcaches = {
     {HG_CJPG,".jpg"},
     {HG_CPNG,".png"},
     {HG_CBMP,".bmp"},
     {HG_CTIFF,".tiff"}
 };
+#include <regex>
+
+//// 使用正则表达式判断文件名是否有效(不含非法字符)
+//inline bool IsValidFileName(const std::string& strFileName)
+//{
+//    // Windows下文件名中不能包含\/:*?"<>|这些字符
+//    std::regex regExpress("[\\/:*?\"<>|]");
+//    bool bValid = !std::regex_search(strFileName, regExpress);
+//    return bValid;
+//}
 
 int  writeimage(const char* filename, std::vector<unsigned char>& imagedata) {
     FILE* fp = NULL;
@@ -124,6 +134,7 @@ void onReceivedImage(HG_IMG* img, void* obj)
     else
     {
         path = WChar2Ansi(outapth);
+        path += m_default_prefix;
         path += filename;
     }
 #else
@@ -137,7 +148,7 @@ void onReceivedImage(HG_IMG* img, void* obj)
             dstdirPath = "/tmp";
         }
     }
-    path = dstdirPath + "/" + filename;
+    path = dstdirPath + "/" + m_default_prefix + filename;
 #endif
     //std::vector<int> quality;
     //quality.push_back(CV_IMWRITE_JPEG_QUALITY);
@@ -710,3 +721,23 @@ Java_com_huagao_scanner_DeviceManager_resetPatchIndex(JNIEnv * env, jobject thiz
     indexPatch = 0;
     LOG("JAVA--- clean indexPatch:%d\n", indexPatch);
 }
+
+
+extern "C"
+JNIEXPORT void JNICALL
+Java_com_huagao_scanner_DeviceManager_setPrefix(JNIEnv * env, jobject thiz, jstring prefix)
+{
+    char* cName = const_cast<char*>(env->GetStringUTFChars(prefix, 0));
+    if (cName)
+    {
+        auto len =  strlen(cName);
+        LOG("JAVA--- setPrefix prefix_len = %d  prefix = %s \n", len, cName);
+        if (len > 0)
+        {
+            m_default_prefix.resize(len);
+            memcpy((void*)m_default_prefix.data(), cName, len);
+            LOG("JAVA--- setPrefix m_default_prefix = %d  prefix = %s \n", m_default_prefix.length(), m_default_prefix.c_str());
+        }
+        env->ReleaseStringUTFChars(prefix, cName);
+    }
+}