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authorDaniel Wilhelm <daniel@wili.li>2014-04-18 16:53:07 +0200
committerDaniel Wilhelm <daniel@wili.li>2014-04-18 16:53:07 +0200
commit583d6a1fd6701e3d42c87285265b0b4f7657ab7c (patch)
tree78461dd1a74685252eef77b8e7d3b622d1be67ea /library/tinyxml/tinystr.h
parent1.9 (diff)
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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.
+*/
+
+/*
+ * THIS FILE WAS ALTERED BY Tyge Lovset, 7. April 2005.
+ *
+ * - completely rewritten. compact, clean, and fast implementation.
+ * - sizeof(TiXmlString) = pointer size (4 bytes on 32-bit systems)
+ * - fixed reserve() to work as per specification.
+ * - fixed buggy compares operator==(), operator<(), and operator>()
+ * - fixed operator+=() to take a const ref argument, following spec.
+ * - added "copy" constructor with length, and most compare operators.
+ * - added swap(), clear(), size(), capacity(), operator+().
+ */
+
+#ifndef TIXML_USE_STL
+
+#ifndef TIXML_STRING_INCLUDED
+#define TIXML_STRING_INCLUDED
+
+#include <assert.h>
+#include <string.h>
+
+/* The support for explicit isn't that universal, and it isn't really
+ required - it is used to check that the TiXmlString class isn't incorrectly
+ used. Be nice to old compilers and macro it here:
+*/
+#if defined(_MSC_VER) && (_MSC_VER >= 1200 )
+ // Microsoft visual studio, version 6 and higher.
+ #define TIXML_EXPLICIT explicit
+#elif defined(__GNUC__) && (__GNUC__ >= 3 )
+ // GCC version 3 and higher.s
+ #define TIXML_EXPLICIT explicit
+#else
+ #define TIXML_EXPLICIT
+#endif
+
+
+/*
+ TiXmlString is an emulation of a subset 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 :
+ // The size type used
+ typedef size_t size_type;
+
+ // Error value for find primitive
+ static const size_type npos; // = -1;
+
+
+ // TiXmlString empty constructor
+ TiXmlString () : rep_(&nullrep_)
+ {
+ }
+
+ // TiXmlString copy constructor
+ TiXmlString ( const TiXmlString & copy) : rep_(0)
+ {
+ init(copy.length());
+ memcpy(start(), copy.data(), length());
+ }
+
+ // TiXmlString constructor, based on a string
+ TIXML_EXPLICIT TiXmlString ( const char * copy) : rep_(0)
+ {
+ init( static_cast<size_type>( strlen(copy) ));
+ memcpy(start(), copy, length());
+ }
+
+ // TiXmlString constructor, based on a string
+ TIXML_EXPLICIT TiXmlString ( const char * str, size_type len) : rep_(0)
+ {
+ init(len);
+ memcpy(start(), str, len);
+ }
+
+ // TiXmlString destructor
+ ~TiXmlString ()
+ {
+ quit();
+ }
+
+ // = operator
+ TiXmlString& operator = (const char * copy)
+ {
+ return assign( copy, (size_type)strlen(copy));
+ }
+
+ // = operator
+ TiXmlString& operator = (const TiXmlString & copy)
+ {
+ return assign(copy.start(), copy.length());
+ }
+
+
+ // += operator. Maps to append
+ TiXmlString& operator += (const char * suffix)
+ {
+ return append(suffix, static_cast<size_type>( strlen(suffix) ));
+ }
+
+ // += operator. Maps to append
+ TiXmlString& operator += (char single)
+ {
+ return append(&single, 1);
+ }
+
+ // += operator. Maps to append
+ TiXmlString& operator += (const TiXmlString & suffix)
+ {
+ return append(suffix.data(), suffix.length());
+ }
+
+
+ // Convert a TiXmlString into a null-terminated char *
+ const char * c_str () const { return rep_->str; }
+
+ // Convert a TiXmlString into a char * (need not be null terminated).
+ const char * data () const { return rep_->str; }
+
+ // Return the length of a TiXmlString
+ size_type length () const { return rep_->size; }
+
+ // Alias for length()
+ size_type size () const { return rep_->size; }
+
+ // Checks if a TiXmlString is empty
+ bool empty () const { return rep_->size == 0; }
+
+ // Return capacity of string
+ size_type capacity () const { return rep_->capacity; }
+
+
+ // single char extraction
+ const char& at (size_type index) const
+ {
+ assert( index < length() );
+ return rep_->str[ index ];
+ }
+
+ // [] operator
+ char& operator [] (size_type index) const
+ {
+ assert( index < length() );
+ return rep_->str[ index ];
+ }
+
+ // find a char in a string. Return TiXmlString::npos if not found
+ size_type find (char lookup) const
+ {
+ return find(lookup, 0);
+ }
+
+ // find a char in a string from an offset. Return TiXmlString::npos if not found
+ size_type find (char tofind, size_type offset) const
+ {
+ if (offset >= length()) return npos;
+
+ for (const char* p = c_str() + offset; *p != '\0'; ++p)
+ {
+ if (*p == tofind) return static_cast< size_type >( p - c_str() );
+ }
+ return npos;
+ }
+
+ void clear ()
+ {
+ //Lee:
+ //The original was just too strange, though correct:
+ // TiXmlString().swap(*this);
+ //Instead use the quit & re-init:
+ quit();
+ init(0,0);
+ }
+
+ /* Function to reserve a big amount of data when we know we'll need it. Be aware that this
+ function DOES NOT clear the content of the TiXmlString if any exists.
+ */
+ void reserve (size_type cap);
+
+ TiXmlString& assign (const char* str, size_type len);
+
+ TiXmlString& append (const char* str, size_type len);
+
+ void swap (TiXmlString& other)
+ {
+ Rep* r = rep_;
+ rep_ = other.rep_;
+ other.rep_ = r;
+ }
+
+ private:
+
+ void init(size_type sz) { init(sz, sz); }
+ void set_size(size_type sz) { rep_->str[ rep_->size = sz ] = '\0'; }
+ char* start() const { return rep_->str; }
+ char* finish() const { return rep_->str + rep_->size; }
+
+ struct Rep
+ {
+ size_type size, capacity;
+ char str[1];
+ };
+
+ void init(size_type sz, size_type cap)
+ {
+ if (cap)
+ {
+ // Lee: the original form:
+ // rep_ = static_cast<Rep*>(operator new(sizeof(Rep) + cap));
+ // doesn't work in some cases of new being overloaded. Switching
+ // to the normal allocation, although use an 'int' for systems
+ // that are overly picky about structure alignment.
+ const size_type bytesNeeded = sizeof(Rep) + cap;
+ const size_type intsNeeded = ( bytesNeeded + sizeof(int) - 1 ) / sizeof( int );
+ rep_ = reinterpret_cast<Rep*>( new int[ intsNeeded ] );
+
+ rep_->str[ rep_->size = sz ] = '\0';
+ rep_->capacity = cap;
+ }
+ else
+ {
+ rep_ = &nullrep_;
+ }
+ }
+
+ void quit()
+ {
+ if (rep_ != &nullrep_)
+ {
+ // The rep_ is really an array of ints. (see the allocator, above).
+ // Cast it back before delete, so the compiler won't incorrectly call destructors.
+ delete [] ( reinterpret_cast<int*>( rep_ ) );
+ }
+ }
+
+ Rep * rep_;
+ static Rep nullrep_;
+
+} ;
+
+
+inline bool operator == (const TiXmlString & a, const TiXmlString & b)
+{
+ return ( a.length() == b.length() ) // optimization on some platforms
+ && ( strcmp(a.c_str(), b.c_str()) == 0 ); // actual compare
+}
+inline bool operator < (const TiXmlString & a, const TiXmlString & b)
+{
+ return strcmp(a.c_str(), b.c_str()) < 0;
+}
+
+inline bool operator != (const TiXmlString & a, const TiXmlString & b) { return !(a == b); }
+inline bool operator > (const TiXmlString & a, const TiXmlString & b) { return b < a; }
+inline bool operator <= (const TiXmlString & a, const TiXmlString & b) { return !(b < a); }
+inline bool operator >= (const TiXmlString & a, const TiXmlString & b) { return !(a < b); }
+
+inline bool operator == (const TiXmlString & a, const char* b) { return strcmp(a.c_str(), b) == 0; }
+inline bool operator == (const char* a, const TiXmlString & b) { return b == a; }
+inline bool operator != (const TiXmlString & a, const char* b) { return !(a == b); }
+inline bool operator != (const char* a, const TiXmlString & b) { return !(b == a); }
+
+TiXmlString operator + (const TiXmlString & a, const TiXmlString & b);
+TiXmlString operator + (const TiXmlString & a, const char* b);
+TiXmlString operator + (const char* a, const TiXmlString & b);
+
+
+/*
+ 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 << operator.
+ TiXmlOutStream & operator << (const TiXmlString & in)
+ {
+ *this += in;
+ return *this;
+ }
+
+ // TiXmlOutStream << operator.
+ TiXmlOutStream & operator << (const char * in)
+ {
+ *this += in;
+ return *this;
+ }
+
+} ;
+
+#endif // TIXML_STRING_INCLUDED
+#endif // TIXML_USE_STL
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