add temporary path for saving received images from USB in windows

hgdriver/hgdev/hg_scanner.cpp

@@ -4,6 +4,7 @@
 
 #ifdef WIN32
 #include "scanner_manager.h"
+#include <direct.h>
 #endif
 
 
@@ -164,30 +165,49 @@ std::string hg_scanner::error_description(hg_err err)
 }
 std::string hg_scanner::temporary_file(char* tail, char* head)
 {
-	char	buf[128];
+	std::string path("/tmp/");
-	FILE* src = NULL;
+	char		buf[128];
+	FILE*		src = NULL;
+	unsigned int ind = 1;
 
 	if (!head || *head == 0)
 		head = (char*)"scan";
 	if (!tail)
 		tail = (char*)"";
 
+#ifdef WIN32
+	char	me[MAX_PATH] = { 0 }, * n = NULL;
+
+	GetModuleFileNameA(NULL, me, _countof(me) - 1);
+	n = strrchr(me, '\\');
+	if (n++ == NULL)
+		n = me;
+	*n = 0;
+	path = me;
+	path += "img_tmp\\";
+	mkdir(path.c_str());
+#endif
+
 	srand(time(NULL));
-	sprintf(buf, "/tmp/%s_%04x%s", head, rand(), tail);
+	sprintf(buf, "%s%s", head, tail);
-	while ((src = fopen(buf, "rb")))
+	while ((src = fopen((path + buf).c_str(), "rb")))
 	{
 		fclose(src);
-		sprintf(buf, "/tmp/%s_%04x%s", head, rand(), tail);
+		sprintf(buf, "%s(%u)%s", head, ind++, tail);
 	}
 
-	return buf;
+	return path + buf;
 }
-int hg_scanner::save_2_tempory_file(std::shared_ptr<std::vector<char>> data, std::string* path_file)
+int hg_scanner::save_2_tempory_file(std::shared_ptr<std::vector<char>> data, std::string* path_file, unsigned int index)
 {
-	std::string file(hg_scanner::temporary_file((char*)".jpg"));
+	char		head[40] = { 0 };
-	FILE* dst = fopen(file.c_str(), "wb+");
+	std::string file("");
+	FILE*		dst = nullptr;
 	int			ret = HG_ERR_OK;
 
+	sprintf(head, "scan_%06u", index);
+	file = hg_scanner::temporary_file((char*)".jpg", (char*)head);
+	dst = fopen(file.c_str(), "wb+");
 	if (dst)
 	{
 		ENOSPC; EROFS; strerror(errno);
@@ -356,6 +376,7 @@ void hg_scanner::thread_handle_usb(void)
 		}
 
 		scan_life_ = new do_when_born_and_dead<hg_scanner>(this, &hg_scanner::working_begin, &hg_scanner::working_done, NULL);
+		usb_img_index_ = 0;
 		thread_handle_usb_read();
 		if (scan_life_->release() == 0)
 			scan_life_ = NULL;
@@ -1741,12 +1762,13 @@ int hg_scanner::save_usb_data(std::shared_ptr<std::vector<char>> data)
 {
 	int ret = HG_ERR_OK;
 
+	usb_img_index_++;
 	HG_VLOG_MINI_1(HG_LOG_LEVEL_DEBUG_INFO, "USB read one picture with %u bytes\n", data->size());
 	if (is_to_file())
 	{
 		std::string file("");
 
-		ret = hg_scanner::save_2_tempory_file(data, &file);
+		ret = hg_scanner::save_2_tempory_file(data, &file, usb_img_index_);
 		if (ret == HG_ERR_OK)
 			paths_.Put(file);
 	}
@@ -1755,7 +1777,7 @@ int hg_scanner::save_usb_data(std::shared_ptr<std::vector<char>> data)
 		imgs_.Put(data);
 
 #ifdef SAVE_TO_FILE
-		hg_scanner::save_2_tempory_file(data, NULL);
+		hg_scanner::save_2_tempory_file(data, NULL, usb_img_index_);
 #endif
 	}
 	if (wait_img_.is_waiting())

hgdriver/hgdev/hg_scanner.h

@@ -240,6 +240,7 @@ protected:
     std::string img_type_;
 
     image_data	    final_imgs_;	// JPG ...
+    unsigned int    usb_img_index_;
     unsigned int    final_img_index_;
     BlockingQueue<std::shared_ptr<std::vector<char>>> imgs_;
     BlockingQueue<std::string> paths_;
@@ -298,7 +299,7 @@ public:
     static std::string strerr(hg_err err);
     static std::string error_description(hg_err err);
     static std::string temporary_file(char* tail = NULL, char* head = NULL);
-    static int save_2_tempory_file(std::shared_ptr<std::vector<char>> data, std::string* path_file);
+    static int save_2_tempory_file(std::shared_ptr<std::vector<char>> data, std::string* path_file, unsigned int index = 0);
 
 public:
 ///////////////////////////////新增 20220425//////////////////////////