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// file : xsd/cxx/ro-string.hxx
// copyright : Copyright (c) 2005-2014 Code Synthesis Tools CC
// license : GNU GPL v2 + exceptions; see accompanying LICENSE file
#ifndef XSD_CXX_RO_STRING_HXX
#define XSD_CXX_RO_STRING_HXX
#include <string>
#include <cstddef> // std::size_t
#include <ostream>
namespace xsd
{
namespace cxx
{
// Read-only string class template.
//
template <typename C>
class ro_string
{
public:
typedef std::char_traits<C> traits_type;
typedef std::size_t size_type;
static const size_type npos = ~(size_type (0));
public:
ro_string ()
: data_ (0), size_ (0)
{
}
ro_string (const C* s)
: data_ (s), size_ (traits_type::length (s))
{
}
ro_string (const C* s, size_type size)
: data_ (s), size_ (size)
{
}
ro_string (const std::basic_string<C>& s)
: data_ (s.data ()), size_ (s.size ())
{
}
operator std::basic_string<C> () const
{
return std::basic_string<C> (data (), size ());
}
private:
ro_string (const ro_string&);
ro_string&
operator= (const ro_string&);
public:
// The returned string is not necessarily terminated with '\0'.
// If size() returns 0, the returned pointer may be 0.
//
const C*
data () const
{
return data_;
}
size_type
size () const
{
return size_;
}
size_type
length () const
{
return size ();
}
public:
bool
empty () const
{
return size () == 0;
}
const C&
operator[] (size_type pos) const
{
return data ()[pos];
}
public:
void
assign (const C* s)
{
data_ = s;
size_ = traits_type::length (s);
}
void
assign (const C* s, size_type size)
{
data_ = s;
size_ = size;
}
void
assign (const std::basic_string<C>& s)
{
data_ = s.c_str ();
size_ = s.size ();
}
public:
int
compare (const ro_string& str) const
{
return compare (str.data (), str.size ());
}
int
compare (const std::basic_string<C>& str) const
{
return compare (str.c_str (), str.size ());
}
int
compare (const C* str) const
{
return compare (str, traits_type::length (str));
}
int
compare (const C* str, size_type n) const
{
size_type s1 (size ());
size_type s (s1 < n ? s1 : n);
int r (s != 0 ? traits_type::compare (data (), str, s) : 0);
if (!r && s1 != n)
r = s1 < n ? -1 : 1;
return r;
}
public:
size_type
find (C c, size_type pos = 0) const;
private:
const C* data_;
size_type size_;
};
// operator==
//
template <typename C>
inline bool
operator== (const ro_string<C>& a, const ro_string<C>& b)
{
return a.compare (b) == 0;
}
template <typename C>
inline bool
operator== (const ro_string<C>& a, const std::basic_string<C>& b)
{
return a.compare (b) == 0;
}
template <typename C>
inline bool
operator== (const std::basic_string<C>& a, const ro_string<C>& b)
{
return b.compare (a) == 0;
}
template <typename C>
inline bool
operator== (const ro_string<C>& a, const C* b)
{
return a.compare (b) == 0;
}
template <typename C>
inline bool
operator== (const C* a, const ro_string<C>& b)
{
return b.compare (a) == 0;
}
// operator!=
//
template <typename C>
inline bool
operator!= (const ro_string<C>& a, const ro_string<C>& b)
{
return a.compare (b) != 0;
}
template <typename C>
inline bool
operator!= (const ro_string<C>& a, const std::basic_string<C>& b)
{
return a.compare (b) != 0;
}
template <typename C>
inline bool
operator!= (const std::basic_string<C>& a, const ro_string<C>& b)
{
return b.compare (a) != 0;
}
template <typename C>
inline bool
operator!= (const ro_string<C>& a, const C* b)
{
return a.compare (b) != 0;
}
template <typename C>
inline bool
operator!= (const C* a, const ro_string<C>& b)
{
return b.compare (a) != 0;
}
// operator<
//
template <typename C>
inline bool
operator< (const ro_string<C>& l, const ro_string<C>& r)
{
return l.compare (r) < 0;
}
template <typename C>
inline bool
operator< (const ro_string<C>& l, const std::basic_string<C>& r)
{
return l.compare (r) < 0;
}
template <typename C>
inline bool
operator< (const std::basic_string<C>& l, const ro_string<C>& r)
{
return r.compare (l) > 0;
}
template <typename C>
inline bool
operator< (const ro_string<C>& l, const C* r)
{
return l.compare (r) < 0;
}
template <typename C>
inline bool
operator< (const C* l, const ro_string<C>& r)
{
return r.compare (l) > 0;
}
// operator>
//
template <typename C>
inline bool
operator> (const ro_string<C>& l, const ro_string<C>& r)
{
return l.compare (r) > 0;
}
template <typename C>
inline bool
operator> (const ro_string<C>& l, const std::basic_string<C>& r)
{
return l.compare (r) > 0;
}
template <typename C>
inline bool
operator> (const std::basic_string<C>& l, const ro_string<C>& r)
{
return r.compare (l) < 0;
}
template <typename C>
inline bool
operator> (const ro_string<C>& l, const C* r)
{
return l.compare (r) > 0;
}
template <typename C>
inline bool
operator> (const C* l, const ro_string<C>& r)
{
return r.compare (l) < 0;
}
// operator<=
//
template <typename C>
inline bool
operator<= (const ro_string<C>& l, const ro_string<C>& r)
{
return l.compare (r) <= 0;
}
template <typename C>
inline bool
operator<= (const ro_string<C>& l, const std::basic_string<C>& r)
{
return l.compare (r) <= 0;
}
template <typename C>
inline bool
operator<= (const std::basic_string<C>& l, const ro_string<C>& r)
{
return r.compare (l) >= 0;
}
template <typename C>
inline bool
operator<= (const ro_string<C>& l, const C* r)
{
return l.compare (r) <= 0;
}
template <typename C>
inline bool
operator<= (const C* l, const ro_string<C>& r)
{
return r.compare (l) >= 0;
}
// operator>=
//
template <typename C>
inline bool
operator>= (const ro_string<C>& l, const ro_string<C>& r)
{
return l.compare (r) >= 0;
}
template <typename C>
inline bool
operator>= (const ro_string<C>& l, const std::basic_string<C>& r)
{
return l.compare (r) >= 0;
}
template <typename C>
inline bool
operator>= (const std::basic_string<C>& l, const ro_string<C>& r)
{
return r.compare (l) <= 0;
}
template <typename C>
inline bool
operator>= (const ro_string<C>& l, const C* r)
{
return l.compare (r) >= 0;
}
template <typename C>
inline bool
operator>= (const C* l, const ro_string<C>& r)
{
return r.compare (l) <= 0;
}
// operator<<
//
template<typename C>
std::basic_ostream<C>&
operator<< (std::basic_ostream<C>& os, const ro_string<C>& str)
{
if (str.size () != 0)
os.write (str.data (), static_cast<std::streamsize> (str.size ()));
return os;
}
// operator+=
//
template<typename C>
std::basic_string<C>&
operator+= (std::basic_string<C>& l, const ro_string<C>& r)
{
l.append (r.data (), r.size ());
return l;
}
// Trim leading and trailing XML whitespaces. Return the new
// string size.
//
template <typename C>
typename ro_string<C>::size_type
trim_left (ro_string<C>&);
template <typename C>
typename ro_string<C>::size_type
trim_right (ro_string<C>&);
template <typename C>
typename ro_string<C>::size_type
trim (ro_string<C>&);
// Trim leading and trailing XML whitespaces.
//
template<typename C>
std::basic_string<C>
trim (const std::basic_string<C>&);
}
}
#include <xsd/cxx/ro-string.txx>
#endif // XSD_CXX_RO_STRING_HXX
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