打开帮助文档改为绝对路径

hgdriver/hgdev/hg_scanner.cpp

@@ -1,4 +1,4 @@
-#include "hg_scanner.h"
+#include "hg_scanner.h"
 #include "../wrapper/hg_log.h"
 #include "sane/sane_option_definitions.h"
 #include "scanner_setting.h"
@@ -1475,16 +1475,92 @@ int hg_scanner::setting_restore(void* data, long* len)
 
 	return SCANNER_ERR_CONFIGURATION_CHANGED;
 }
+
+static int GetModuleName(void* addr, char* name, int maxLen)
+{
+	if (NULL == name || 0 == maxLen)
+	{
+		return -1;
+	}
+
+#if !defined(_WIN32)
+	if (NULL == addr)
+	{
+		char dir[PATH_MAX] = { 0 };
+		if (0 == readlink("/proc/self/exe", dir, PATH_MAX))
+			return -1;
+		if (maxLen < strlen(dir) + 1)
+			return -1;
+		strcpy(name, dir);
+	}
+	else
+	{
+		Dl_info dlinfo;
+		if (0 == dladdr(addr, &dlinfo))
+			return -1;
+		if (maxLen < strlen(dlinfo.dli_fname) + 1)
+			return -1;
+		strcpy(name, dlinfo.dli_fname);
+	}
+#else
+	HMODULE hModule = NULL;
+	GetModuleHandleExA(GET_MODULE_HANDLE_EX_FLAG_FROM_ADDRESS
+		| GET_MODULE_HANDLE_EX_FLAG_UNCHANGED_REFCOUNT, (LPCSTR)addr, &hModule);
+
+	CHAR moduleName[MAX_PATH] = { 0 };
+	DWORD len = GetModuleFileNameA(hModule, moduleName, MAX_PATH);
+	if (0 == len || maxLen < strlen(moduleName) + 1)
+		return -1;
+	strcpy(name, moduleName);
+#endif
+	return 0;
+}
+
+static int GetFilePath(const char* fileName, char* path, int maxLen)
+{
+	if (NULL == fileName || NULL == path || 0 == maxLen)
+	{
+		return -1;
+	}
+
+#if defined(_WIN32)
+	const char* pcName = strrchr(fileName, '\\');
+	if (NULL == pcName)
+	{
+		pcName = strrchr(fileName, '/');
+		if (NULL == pcName)
+			return -1;
+	}
+#else
+	const char* pcName = strrchr(fileName, '/');
+	if (NULL == pcName)
+		return -1;
+#endif
+
+	++pcName;
+	if (maxLen < (int)(pcName - fileName + 1))
+		return -1;
+	memcpy(path, fileName, pcName - fileName);
+	path[pcName - fileName] = 0;
+	return 0;
+}
+
 int hg_scanner::setting_help(void* data, long* len)
 {
-	std::string helpfile = HELP_PATH;
+	char moduleName[256];
+	GetModuleName(NULL, moduleName, 256);
+	char exePath[256];
+	GetFilePath(moduleName, exePath, 256);
+	std:string exePath2 = exePath;
+
+	std::string helpfile = exePath2 + HELP_PATH;
 	std::string com = "xdg-open ";//注意空格保留
 	int code_page = lang_get_cur_code_page();
 	int ret = SCANNER_ERR_OK;
 
 	if (code_page == 20127)
 	{
-		helpfile = HELP_PATH_EN;
+		helpfile = exePath2 + HELP_PATH_EN;
 	}
 
 #if defined(WIN32) || defined(_WIN64)