From 3f80b27c435f967ab1d7626380ea61cbf9bcab71 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Daniel=20Marjam=C3=A4ki?= <hyd_danmar@users.sourceforge.net>
Date: Sun, 26 Oct 2008 14:11:21 +0000
Subject: [PATCH] preprocessor: quick fix to make the TestPreprocessor::test1
 work

---
 preprocessor.cpp | 37 +++++++++++++++++++++++++++++++++++++
 1 file changed, 37 insertions(+)

diff --git a/preprocessor.cpp b/preprocessor.cpp
index 5df013a6a..e74b1366b 100644
--- a/preprocessor.cpp
+++ b/preprocessor.cpp
@@ -19,8 +19,11 @@
 
 #include "preprocessor.h"
 
+#include <list>
 #include <sstream>
 
+static std::string getcode(const std::string &filedata, std::string cfg);
+
 void preprocess(std::istream &istr, std::map<std::string, std::string> &result)
 {
     std::ostringstream ostr;
@@ -28,6 +31,40 @@ void preprocess(std::istream &istr, std::map<std::string, std::string> &result)
     while ( getline(istr, line) )
         ostr << line << "\n";
 
+    result.clear();
+    result[""] = getcode( ostr.str(), "" );
+    result["WIN32"] = getcode( ostr.str(), "WIN32" );
 }
 
 
+static std::string getcode(const std::string &filedata, std::string cfg)
+{
+    std::ostringstream ret;
+
+    std::list<bool> matching_ifdef;
+
+    std::istringstream istr(filedata);
+    std::string line;
+    while ( getline(istr, line) )
+    {
+        if ( line.find("#ifdef ") == 0 )
+            matching_ifdef.push_back( !cfg.empty() && line.find(cfg) != std::string::npos );
+
+        else if ( line.find("#else") == 0)
+            matching_ifdef.back() = ! matching_ifdef.back();
+
+        else if ( line.find("#endif") == 0 )
+            matching_ifdef.pop_back();
+
+        if ( !matching_ifdef.empty() && !matching_ifdef.back() )
+            line = "";
+
+        if ( line.find("#") == 0 )
+            line = "";
+
+        ret << line << "\n";
+    }
+
+    return ret.str();
+}
+