svn -> git Migration

common/tinyxml/tinystr.h

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+/*
+www.sourceforge.net/projects/tinyxml
+Original file by Yves Berquin.
+
+This software is provided 'as-is', without any express or implied 
+warranty. In no event will the authors be held liable for any 
+damages arising from the use of this software.
+
+Permission is granted to anyone to use this software for any 
+purpose, including commercial applications, and to alter it and 
+redistribute it freely, subject to the following restrictions:
+
+1. The origin of this software must not be misrepresented; you must 
+not claim that you wrote the original software. If you use this 
+software in a product, an acknowledgment in the product documentation 
+would be appreciated but is not required.
+
+2. Altered source versions must be plainly marked as such, and
+must not be misrepresented as being the original software.
+
+3. This notice may not be removed or altered from any source 
+distribution.
+*/
+
+#include "tinyxml.h"
+
+
+#ifndef TIXML_USE_STL
+
+#ifndef TIXML_STRING_INCLUDED
+#define TIXML_STRING_INCLUDED
+
+#ifdef _MSC_VER
+#pragma warning( disable : 4530 )
+#pragma warning( disable : 4786 )
+#endif
+
+#include <assert.h>
+
+/*
+   TiXmlString is an emulation of the std::string template.
+   Its purpose is to allow compiling TinyXML on compilers with no or poor STL support.
+   Only the member functions relevant to the TinyXML project have been implemented.
+   The buffer allocation is made by a simplistic power of 2 like mechanism : if we increase
+   a string and there's no more room, we allocate a buffer twice as big as we need.
+*/
+class TiXmlString
+{
+  public :
+    // TiXmlString constructor, based on a string, mark explicit to force
+	// us to find unnecessary casting.
+    explicit TiXmlString (const char * instring);
+
+    // TiXmlString empty constructor
+    TiXmlString ()
+    {
+        allocated = 0;
+        cstring = NULL;
+        current_length = 0;
+    }
+
+    // TiXmlString copy constructor
+    explicit TiXmlString (const TiXmlString& copy);
+
+    // TiXmlString destructor
+    ~ TiXmlString ()
+    {
+        empty_it ();
+    }
+
+    // Convert a TiXmlString into a classical char *
+    const char * c_str () const
+    {
+        if (allocated)
+            return cstring;
+        return "";
+    }
+
+    // Return the length of a TiXmlString
+    size_t length () const
+	{
+		return ( allocated ) ? current_length : 0;
+	}
+
+    // TiXmlString = operator
+    void operator = (const char * content);
+
+    // = operator
+    void operator = (const TiXmlString & copy);
+
+    // += operator. Maps to append
+    TiXmlString& operator += (const char * suffix)
+    {
+        append (suffix);
+		return *this;
+    }
+
+    // += operator. Maps to append
+    TiXmlString& operator += (char single)
+    {
+        append (single);
+		return *this;
+    }
+
+    // += operator. Maps to append
+    TiXmlString& operator += (TiXmlString & suffix)
+    {
+        append (suffix);
+		return *this;
+    }
+    bool operator == (const TiXmlString & compare) const;
+    bool operator == (const char* compare) const;
+    bool operator < (const TiXmlString & compare) const;
+    bool operator > (const TiXmlString & compare) const;
+
+    // Checks if a TiXmlString is empty
+    bool empty () const
+    {
+        return length () ? false : true;
+    }
+
+    // single char extraction
+    const char& at (unsigned index) const
+    {
+        assert( index < length ());
+        return cstring [index];
+    }
+
+    // find a char in a string. Return TiXmlString::notfound if not found
+    unsigned find (char lookup) const
+    {
+        return find (lookup, 0);
+    }
+
+    // find a char in a string from an offset. Return TiXmlString::notfound if not found
+    unsigned find (char tofind, unsigned offset) const;
+
+    /*	Function to reserve a big amount of data when we know we'll need it. Be aware that this
+		function clears the content of the TiXmlString if any exists.
+    */
+    void reserve (unsigned size)
+    {
+        empty_it ();
+        if (size)
+        {
+            allocated = size;
+            cstring = new char [size];
+            cstring [0] = 0;
+            current_length = 0;
+        }
+    }
+
+    // [] operator 
+    char& operator [] (unsigned index) const
+    {
+        assert( index < length ());
+        return cstring [index];
+    }
+
+    // Error value for find primitive 
+    enum {	notfound = 0xffffffff,
+            npos = notfound };
+
+    void append (const char *str, size_t len );
+
+  protected :
+
+    // The base string
+    char * cstring;
+    // Number of chars allocated
+    size_t allocated;
+    // Current string size
+    size_t current_length;
+
+    // New size computation. It is simplistic right now : it returns twice the amount
+    // we need
+    size_t assign_new_size (size_t minimum_to_allocate)
+    {
+        return minimum_to_allocate * 2;
+    }
+
+    // Internal function that clears the content of a TiXmlString
+    void empty_it ()
+    {
+        if (cstring)
+            delete [] cstring;
+        cstring = NULL;
+        allocated = 0;
+        current_length = 0;
+    }
+
+    void append (const char *suffix );
+
+    // append function for another TiXmlString
+    void append (const TiXmlString & suffix)
+    {
+        append (suffix . c_str ());
+    }
+
+    // append for a single char.
+    void append (char single)
+    {
+        if ( cstring && current_length < (allocated-1) )
+		{
+			cstring[ current_length ] = single;
+			++current_length;
+			cstring[ current_length ] = 0;
+		}
+		else
+		{
+			char smallstr [2];
+			smallstr [0] = single;
+			smallstr [1] = 0;
+			append (smallstr);
+		}
+    }
+
+} ;
+
+/* 
+   TiXmlOutStream is an emulation of std::ostream. It is based on TiXmlString.
+   Only the operators that we need for TinyXML have been developped.
+*/
+class TiXmlOutStream : public TiXmlString
+{
+public :
+    TiXmlOutStream () : TiXmlString () {}
+
+    // TiXmlOutStream << operator. Maps to TiXmlString::append
+    TiXmlOutStream & operator << (const char * in)
+    {
+        append (in);
+        return (* this);
+    }
+
+    // TiXmlOutStream << operator. Maps to TiXmlString::append
+    TiXmlOutStream & operator << (const TiXmlString & in)
+    {
+        append (in . c_str ());
+        return (* this);
+    }
+} ;
+
+#ifdef _MSC_VER
+#pragma warning( default : 4530 )
+#pragma warning( default : 4786 )
+#endif
+
+#endif	// TIXML_STRING_INCLUDED
+#endif	// TIXML_USE_STL