From b8b16172b88659c0f717c83b61ad444f7c19e43d Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Daniel=20Marjam=C3=A4ki?= <daniel.marjamaki@gmail.com>
Date: Sat, 26 May 2012 18:10:12 +0200
Subject: [PATCH] Memory leaks: Added support for a simple configuration file
 format. This is not supposed to become the official configuration format,
 it's just a temporary format that we can use to start with.

---
 lib/checkleakautovar.cpp | 42 +++++++++++++++++++++++++++++++++++-----
 lib/checkleakautovar.h   |  6 ++++++
 2 files changed, 43 insertions(+), 5 deletions(-)

diff --git a/lib/checkleakautovar.cpp b/lib/checkleakautovar.cpp
index c1a0ea874..2858ac561 100644
--- a/lib/checkleakautovar.cpp
+++ b/lib/checkleakautovar.cpp
@@ -28,7 +28,7 @@
 
 #include "checknullpointer.h"  // <- isUpper
 
-#include <iostream>
+#include <fstream>
 
 //---------------------------------------------------------------------------
 
@@ -85,8 +85,7 @@ void CheckLeakAutoVar::doubleDeallocationError(const Token *tok, const std::stri
 
 void CheckLeakAutoVar::configurationInfo(const Token* tok, const std::string &functionName)
 {
-	if (_settings->experimental)
-	{
+    if (_settings->experimental) {
         reportError(tok,
                     Severity::information,
                     "leakconfiguration",
@@ -94,6 +93,39 @@ void CheckLeakAutoVar::configurationInfo(const Token* tok, const std::string &fu
     }
 }
 
+void CheckLeakAutoVar::parseConfigurationFile(const std::string &filename)
+{
+    std::ifstream fin(filename.c_str());
+    if (!fin.is_open())
+        return;
+
+    std::string line;
+    while (std::getline(fin,line)) {
+        if (line.compare(0,4,"MEM ",0,4) == 0) {
+            std::string f1;
+            unsigned int type = 1;
+            std::string::size_type pos1 = line.find_first_not_of(" ", 4U);
+            while (pos1 < line.size()) {
+                const std::string::size_type pos2 = line.find(" ", pos1);
+                std::string f;
+                if (pos2 == std::string::npos)
+                    f = line.substr(pos1);
+                else
+                    f = line.substr(pos1, pos2-pos1);
+                if (f1.empty())
+                    f1 = f;
+                if (f == ":")
+                    type = 2;
+                else if (type == 1)
+                    cfgalloc[f] = f1;
+                else if (type == 1)
+                    cfgdealloc[f] = f1;
+                pos1 = line.find_first_not_of(" ", pos2);
+            }
+        }
+    }
+}
+
 void CheckLeakAutoVar::check()
 {
     const SymbolDatabase *symbolDatabase = _tokenizer->getSymbolDatabase();
@@ -125,13 +157,13 @@ void CheckLeakAutoVar::checkScope(const Token * const startToken,
     const std::set<unsigned int> conditionalAlloc(varInfo->conditionalAlloc);
 
     // Allocation functions. key = function name, value = allocation type
-    std::map<std::string, std::string> allocFunctions;
+    std::map<std::string, std::string> allocFunctions(cfgalloc);
     allocFunctions["malloc"] = "malloc";
     allocFunctions["strdup"] = "malloc";
     allocFunctions["fopen"] = "fopen";
 
     // Deallocation functions. key = function name, value = allocation type
-    std::map<std::string, std::string> deallocFunctions;
+    std::map<std::string, std::string> deallocFunctions(cfgdealloc);
     deallocFunctions["free"] = "malloc";
     deallocFunctions["fclose"] = "fopen";
 
diff --git a/lib/checkleakautovar.h b/lib/checkleakautovar.h
index c7698c5f5..949b11f65 100644
--- a/lib/checkleakautovar.h
+++ b/lib/checkleakautovar.h
@@ -77,11 +77,17 @@ public:
     /** @brief Run checks against the simplified token list */
     void runSimplifiedChecks(const Tokenizer *tokenizer, const Settings *settings, ErrorLogger *errorLogger) {
         CheckLeakAutoVar checkLeakAutoVar(tokenizer, settings, errorLogger);
+        checkLeakAutoVar.parseConfigurationFile("cppcheck.cfg");
         checkLeakAutoVar.check();
     }
 
 private:
 
+    std::map<std::string,std::string> cfgalloc;
+    std::map<std::string,std::string> cfgdealloc;
+
+    void parseConfigurationFile(const std::string &filename);
+
     /** check for leaks in all scopes */
     void check();