More flexible loading of platform files, when using --platform it should not be necessary to provide the full path

cli/cmdlineparser.cpp

@@ -714,7 +714,7 @@ bool CmdLineParser::ParseFromArgs(int argc, const char* const argv[])
                     _settings->platform(Settings::Native);
                 else if (platform == "unspecified")
                     _settings->platform(Settings::Unspecified);
-                else if (!_settings->platformFile(platform)) {
+                else if (!_settings->platformFile(argv[0], platform)) {
                     std::string message("cppcheck: error: unrecognized platform: \"");
                     message += platform;
                     message += "\".";

lib/platform.cpp

@@ -17,12 +17,13 @@
 */
 
 #include "platform.h"
-
+#include "path.h"
 #include "tinyxml2.h"
-
 #include <cstdlib>
 #include <cstring>
 #include <limits>
+#include <vector>
+#include <iostream>
 
 cppcheck::Platform::Platform()
 {
@@ -154,12 +155,35 @@ bool cppcheck::Platform::platform(cppcheck::Platform::PlatformType type)
     return false;
 }
 
-bool cppcheck::Platform::platformFile(const std::string &filename)
+bool cppcheck::Platform::platformFile(const char exename[], const std::string &filename)
 {
     // open file..
     tinyxml2::XMLDocument doc;
-    if (doc.LoadFile(filename.c_str()) != tinyxml2::XML_SUCCESS)
+    if (doc.LoadFile(filename.c_str()) != tinyxml2::XML_SUCCESS) {
-        return false;
+		std::vector<std::string> filenames;
+		filenames.push_back(filename + ".xml");
+		if (exename && strchr(exename, '/')) {
+			filenames.push_back(Path::getPathFromFilename(Path::fromNativeSeparators(exename)) + "platforms/" + filename);
+			filenames.push_back(Path::getPathFromFilename(Path::fromNativeSeparators(exename)) + "platforms/" + filename + ".xml");
+		}
+#ifdef CFGDIR
+		std::string cfgdir = CFGDIR;
+		if (cfgdir[cfgdir.size()-1] != '/')
+			cfgdir += '/';
+		filenames.push_back(CFG_DIR + ("../platforms/" + filename));
+		filenames.push_back(CFG_DIR + ("../platforms/" + filename + ".xml"));
+#endif
+		bool success = false;
+		for (int i = 0; i < filenames.size(); ++i) {
+			std::cout << "platform:" << filenames[i] << std::endl;
+			if (doc.LoadFile(filenames[i].c_str()) == tinyxml2::XML_SUCCESS) {
+				success = true;
+				break;
+			}
+		}
+		if (!success)
+			return false;
+	}
 
     const tinyxml2::XMLElement * const rootnode = doc.FirstChildElement();
 

lib/platform.h

@@ -97,7 +97,7 @@ namespace cppcheck {
         bool platform(PlatformType type);
 
         /** set the platform type for user specified platforms */
-        bool platformFile(const std::string &filename);
+        bool platformFile(const char exename[], const std::string &filename);
 
         /**
         * @brief Returns true if platform type is Windows