Add Path class for path handling routines.

In this initial commit the Path class contains two methods for
converting path separators. I want to move cppcheck path handling
to direction that we internally have paths with / separator. And
convert from/to native separators when needed.

Makefile

@@ -26,6 +26,7 @@ LIBOBJ =     lib/checkautovariables.o \
               lib/filelister_unix.o \
               lib/filelister_win32.o \
               lib/mathlib.o \
+              lib/path.o \
               lib/preprocessor.o \
               lib/settings.o \
               lib/token.o \
@@ -124,7 +125,7 @@ lib/checkunusedfunctions.o: lib/checkunusedfunctions.cpp lib/checkunusedfunction
 lib/cppcheck.o: lib/cppcheck.cpp lib/cppcheck.h lib/settings.h lib/errorlogger.h lib/checkunusedfunctions.h lib/check.h lib/token.h lib/tokenize.h lib/classinfo.h lib/preprocessor.h lib/filelister.h
 	$(CXX) $(CXXFLAGS) -Ilib -c -o lib/cppcheck.o lib/cppcheck.cpp
 
-lib/errorlogger.o: lib/errorlogger.cpp lib/errorlogger.h lib/settings.h lib/tokenize.h lib/classinfo.h lib/token.h
+lib/errorlogger.o: lib/errorlogger.cpp lib/errorlogger.h lib/settings.h lib/tokenize.h lib/classinfo.h lib/token.h lib/path.h
 	$(CXX) $(CXXFLAGS) -Ilib -c -o lib/errorlogger.o lib/errorlogger.cpp
 
 lib/executionpath.o: lib/executionpath.cpp lib/executionpath.h lib/token.h
@@ -142,6 +143,9 @@ lib/filelister_win32.o: lib/filelister_win32.cpp lib/filelister.h lib/filelister
 lib/mathlib.o: lib/mathlib.cpp lib/mathlib.h lib/token.h
 	$(CXX) $(CXXFLAGS) -Ilib -c -o lib/mathlib.o lib/mathlib.cpp
 
+lib/path.o: lib/path.cpp lib/path.h
+	$(CXX) $(CXXFLAGS) -Ilib -c -o lib/path.o lib/path.cpp
+
 lib/preprocessor.o: lib/preprocessor.cpp lib/preprocessor.h lib/errorlogger.h lib/settings.h lib/tokenize.h lib/classinfo.h lib/token.h lib/filelister.h
 	$(CXX) $(CXXFLAGS) -Ilib -c -o lib/preprocessor.o lib/preprocessor.cpp
 

lib/errorlogger.cpp

@@ -19,6 +19,7 @@
 #include "errorlogger.h"
 #include "tokenize.h"
 #include "token.h"
+#include "path.h"
 
 #include <sstream>
 
@@ -245,36 +246,12 @@ std::string ErrorLogger::ErrorMessage::FileLocation::getfile() const
         pos = sep;
     }
 
-#if defined(_WIN32)
-    {
-        std::string::iterator iter = f.begin();
-        std::string::iterator end = f.end();
-        while (iter != end)
-        {
-            if (*iter == '/')
-                *iter = '\\';
-            ++iter;
-        }
-    }
-#endif
-
+    f = Path::toNativeSeparators(f);
     return f;
 }
 
 void ErrorLogger::ErrorMessage::FileLocation::setfile(const std::string &file)
 {
     _file = file;
-    std::cout << "Setting file: " << file << std::endl;
-#if defined(_WIN32)
-    {
-        std::string::iterator iter = _file.begin();
-        std::string::iterator end = _file.end();
-        while (iter != end)
-        {
-            if (*iter == '\\')
-                *iter = '/';
-            ++iter;
-        }
-    }
-#endif
+    _file = Path::fromNativeSeparators(_file);
 }

lib/lib.pri

@@ -17,6 +17,7 @@ HEADERS += $$PWD/check.h \
            $$PWD/filelister_unix.h \
            $$PWD/filelister_win32.h \
            $$PWD/mathlib.h \
+           $$PWD/path.h \
            $$PWD/preprocessor.h \
            $$PWD/settings.h \
            $$PWD/token.h \
@@ -38,6 +39,7 @@ SOURCES += $$PWD/checkautovariables.cpp \
            $$PWD/filelister_unix.cpp \
            $$PWD/filelister_win32.cpp \
            $$PWD/mathlib.cpp \
+           $$PWD/path.cpp \
            $$PWD/preprocessor.cpp \
            $$PWD/settings.cpp \
            $$PWD/token.cpp \

lib/path.cpp

@@ -0,0 +1,56 @@
+/*
+ * Cppcheck - A tool for static C/C++ code analysis
+ * Copyright (C) 2007-2010 Daniel Marjamäki and Cppcheck team.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "path.h"
+
+static std::string replace_chars(const std::string &str, char from, char to)
+{
+    std::string modified(str);
+    size_t pos = modified.find(from);
+    if (pos!= std::string::npos)
+    {
+        std::string::iterator iter = modified.begin() + pos;
+        std::string::iterator end = modified.end();
+        while (iter != end)
+        {
+            if (*iter == from)
+                *iter = to;
+            ++iter;
+        }
+    }
+    return modified;
+}
+
+std::string Path::toNativeSeparators(const std::string &path)
+{
+#if defined(_WIN32)
+    char separ = '/';
+    char native = '\\';
+#else
+    char separ = '\\';
+    char native = '/';
+#endif
+    return replace_chars(path, separ, native);
+}
+
+std::string Path::fromNativeSeparators(const std::string &path)
+{
+    char nonnative = '\\';
+    char internal = '/';
+    return replace_chars(path, nonnative, internal);
+}

lib/path.h

@@ -0,0 +1,54 @@
+/*
+ * Cppcheck - A tool for static C/C++ code analysis
+ * Copyright (C) 2007-2010 Daniel Marjamäki and Cppcheck team.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef PATH_H_INCLUDED
+#define PATH_H_INCLUDED
+
+#include <string>
+
+/// @addtogroup Core
+/// @{
+
+
+/**
+ * @brief Path handling routines.
+ * Internally cppcheck wants to store paths with / separator which is also
+ * native separator for Unix-derived systems. When giving path to user
+ * or for other functions we convert path separators back to native type.
+ */
+class Path
+{
+public:
+    /**
+     * Convert path to use native separators.
+     * @param path Path string to convert.
+     * @return converted path.
+     */
+    static std::string toNativeSeparators(const std::string &path);
+
+    /**
+      * Convert path to use internal path separators.
+      * @param path Path string to convert.
+      * @return converted path.
+      */
+    static std::string fromNativeSeparators(const std::string &path);
+};
+
+/// @}
+
+#endif // PATH_H_INCLUDED