// global pointer to empty string
extern WXDLLIMPEXP_DATA_BASE(const wxChar*) wxEmptyString;
+#if wxUSE_UNICODE_UTF8
+// FIXME-UTF8: we should have only one wxEmptyString
+extern WXDLLIMPEXP_DATA_BASE(const wxStringCharType*) wxEmptyStringImpl;
+#endif
// ----------------------------------------------------------------------------
#include <string>
#include "wx/afterstd.h"
+#ifdef HAVE_STD_WSTRING
+ typedef std::wstring wxStdWideString;
+#else
+ typedef std::basic_string<wchar_t> wxStdWideString;
+#endif
+
#if wxUSE_UNICODE_WCHAR
- #ifdef HAVE_STD_WSTRING
- typedef std::wstring wxStdString;
- #else
- typedef std::basic_string<wxChar> wxStdString;
- #endif
+ typedef wxStdWideString wxStdString;
#else
typedef std::string wxStdString;
#endif
-#endif // need <string>
+#endif // wxUSE_STL_BASED_WXSTRING || wxUSE_STD_STRING
+
#if wxUSE_STL_BASED_WXSTRING
size_t nDataLength, // actual string length
nAllocLength; // allocated memory size
- // mimics declaration 'wxChar data[nAllocLength]'
- wxChar* data() const { return (wxChar*)(this + 1); }
+ // mimics declaration 'wxStringCharType data[nAllocLength]'
+ wxStringCharType* data() const { return (wxStringCharType*)(this + 1); }
// empty string has a special ref count so it's never deleted
bool IsEmpty() const { return (nRefs == -1); }
// string (re)initialization functions
// initializes the string to the empty value (must be called only from
// ctors, use Reinit() otherwise)
+#if wxUSE_UNICODE_UTF8
+ void Init() { m_pchData = (wxStringCharType *)wxEmptyStringImpl; } // FIXME-UTF8
+#else
void Init() { m_pchData = (wxStringCharType *)wxEmptyString; }
+#endif
// initializes the string with (a part of) C-string
void InitWith(const wxStringCharType *psz, size_t nPos = 0, size_t nLen = npos);
// as Init, but also frees old data
typedef const value_type& const_reference;
typedef value_type* pointer;
typedef const value_type* const_pointer;
- typedef value_type *iterator;
- typedef const value_type *const_iterator;
+
+ // macro to define the bulk of iterator and const_iterator classes
+ #define WX_DEFINE_STRINGIMPL_ITERATOR(iterator_name, ref_type, ptr_type) \
+ public: \
+ typedef wxStringCharType value_type; \
+ typedef ref_type reference; \
+ typedef ptr_type pointer; \
+ typedef int difference_type; \
+ \
+ iterator_name(pointer ptr) : m_ptr(ptr) { } \
+ \
+ reference operator*() const { return *m_ptr; } \
+ \
+ iterator_name& operator++() { m_ptr++; return *this; } \
+ iterator_name operator++(int) \
+ { \
+ const iterator_name tmp(*this); \
+ m_ptr++; \
+ return tmp; \
+ } \
+ \
+ iterator_name& operator--() { m_ptr--; return *this; } \
+ iterator_name operator--(int) \
+ { \
+ const iterator_name tmp(*this); \
+ m_ptr--; \
+ return tmp; \
+ } \
+ \
+ iterator_name operator+(int n) const \
+ { return iterator_name(m_ptr + n); } \
+ iterator_name operator+(size_t n) const \
+ { return iterator_name(m_ptr + n); } \
+ iterator_name operator-(int n) const \
+ { return iterator_name(m_ptr - n); } \
+ iterator_name operator-(size_t n) const \
+ { return iterator_name(m_ptr - n); } \
+ iterator_name& operator+=(int n) \
+ { m_ptr += n; return *this; } \
+ iterator_name& operator+=(size_t n) \
+ { m_ptr += n; return *this; } \
+ iterator_name& operator-=(int n) \
+ { m_ptr -= n; return *this; } \
+ iterator_name& operator-=(size_t n) \
+ { m_ptr -= n; return *this; } \
+ \
+ difference_type operator-(const iterator_name& i) const \
+ { return m_ptr - i.m_ptr; } \
+ \
+ bool operator==(const iterator_name& i) const \
+ { return m_ptr == i.m_ptr; } \
+ bool operator!=(const iterator_name& i) const \
+ { return m_ptr != i.m_ptr; } \
+ \
+ bool operator<(const iterator_name& i) const \
+ { return m_ptr < i.m_ptr; } \
+ bool operator>(const iterator_name& i) const \
+ { return m_ptr > i.m_ptr; } \
+ bool operator<=(const iterator_name& i) const \
+ { return m_ptr <= i.m_ptr; } \
+ bool operator>=(const iterator_name& i) const \
+ { return m_ptr >= i.m_ptr; } \
+ \
+ private: \
+ /* for wxStringImpl use only */ \
+ operator pointer() const { return m_ptr; } \
+ \
+ friend class WXDLLIMPEXP_BASE wxStringImpl; \
+ \
+ pointer m_ptr
+
+ // we need to declare const_iterator in wxStringImpl scope, the friend
+ // declaration inside iterator class itself is not enough, or at least not
+ // for g++ 3.4 (g++ 4 is ok)
+ class const_iterator;
+
+ class iterator
+ {
+ WX_DEFINE_STRINGIMPL_ITERATOR(iterator,
+ wxStringCharType&,
+ wxStringCharType*);
+
+ friend class const_iterator;
+ };
+
+ class const_iterator
+ {
+ public:
+ const_iterator(iterator i) : m_ptr(i.m_ptr) { }
+
+ WX_DEFINE_STRINGIMPL_ITERATOR(const_iterator,
+ const wxStringCharType&,
+ const wxStringCharType*);
+ };
+
+ #undef WX_DEFINE_STRINGIMPL_ITERATOR
+
// constructors and destructor
// ctor for an empty string
size_t strLen = str.length() - nPos; nLen = strLen < nLen ? strLen : nLen;
InitWith(str.c_str(), nPos, nLen);
}
- // take all characters from pStart to pEnd
- wxStringImpl(const void *pStart, const void *pEnd);
+ // take everything between start and end
+ wxStringImpl(const_iterator start, const_iterator end);
+
+
+ // ctor from and conversion to std::string
+#if wxUSE_STD_STRING
+ wxStringImpl(const wxStdString& impl)
+ { InitWith(impl.c_str(), 0, impl.length()); }
+
+ operator wxStdString() const
+ { return wxStdString(c_str(), length()); }
+#endif
+
// dtor is not virtual, this class must not be inherited from!
~wxStringImpl()
{ ConcatSelf(str.length(), str.c_str()); return *this; }
// append first n (or all if n == npos) characters of sz
wxStringImpl& append(const wxStringCharType *sz)
- { ConcatSelf(wxStrlen(sz), sz); return *this; }
+ { ConcatSelf(Strsize(sz), sz); return *this; }
wxStringImpl& append(const wxStringCharType *sz, size_t n)
{ ConcatSelf(n, sz); return *this; }
// append n copies of ch
{ clear(); return append(str, pos, n); }
// same as `= first n (or all if n == npos) characters of sz'
wxStringImpl& assign(const wxStringCharType *sz)
- { clear(); return append(sz, wxStrlen(sz)); }
+ { clear(); return append(sz, Strsize(sz)); }
wxStringImpl& assign(const wxStringCharType *sz, size_t n)
{ clear(); return append(sz, n); }
// same as `= n copies of ch'
// insert first n (or all if n == npos) characters of sz
wxStringImpl& insert(size_t nPos, const wxStringCharType *sz, size_t n = npos);
// insert n copies of ch
- wxStringImpl& insert(size_t nPos, size_t n, wxStringCharType ch)// FIXME-UTF8: tricky
+ wxStringImpl& insert(size_t nPos, size_t n, wxStringCharType ch)
{ return insert(nPos, wxStringImpl(n, ch)); }
- iterator insert(iterator it, wxStringCharType ch) // FIXME-UTF8: tricky
+ iterator insert(iterator it, wxStringCharType ch)
{ size_t idx = it - begin(); insert(idx, 1, ch); return begin() + idx; }
void insert(iterator it, const_iterator first, const_iterator last)
{ insert(it - begin(), first, last - first); }
// find first n characters of sz
size_t find(const wxStringCharType* sz, size_t nStart = 0, size_t n = npos) const;
- // find the first occurence of character ch after nStart
+ // find the first occurrence of character ch after nStart
size_t find(wxStringCharType ch, size_t nStart = 0) const;
// rfind() family is exactly like find() but works right to left
void DoUngetWriteBuf(size_t nLen);
#endif
+private:
+#if wxUSE_UNICODE_UTF8
+ static size_t Strsize(const wxStringCharType *s) { return strlen(s); }
+#else
+ static size_t Strsize(const wxStringCharType *s) { return wxStrlen(s); }
+#endif
+
friend class WXDLLIMPEXP_BASE wxString;
};
projects / wxWidgets.git / blobdiff