/*
This header implements std::string-like string class, wxStringImpl, that is
- used by wxString to store the data. Alternatively, if wxUSE_STL=1,
+ used by wxString to store the data. Alternatively, if wxUSE_STD_STRING=1,
wxStringImpl is just a typedef to std:: string class.
*/
// ----------------------------------------------------------------------------
#include "wx/defs.h" // everybody should include this
-#include "wx/wxchar.h" // for wxChar, wxStrlen() etc.
+#include "wx/chartype.h" // for wxChar
+#include "wx/wxcrtbase.h" // for wxStrlen() etc.
+
+#include <stdlib.h>
// ---------------------------------------------------------------------------
// macros
// implementation only
#define wxASSERT_VALID_INDEX(i) \
- wxASSERT_MSG( (size_t)(i) <= length(), _T("invalid index in wxString") )
+ wxASSERT_MSG( (size_t)(i) <= length(), wxT("invalid index in wxString") )
// ----------------------------------------------------------------------------
// 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
// ----------------------------------------------------------------------------
-// deal with STL/non-STL/non-STL-but-wxUSE_STD_STRING
+// deal with various build options
// ----------------------------------------------------------------------------
-#define wxUSE_STL_BASED_WXSTRING wxUSE_STL
+// we use STL-based string internally if we use std::string at all now, there
+// should be no reason to prefer our internal implement but if you really need
+// it you can predefine wxUSE_STL_BASED_WXSTRING as 0 when building the library
+#ifndef wxUSE_STL_BASED_WXSTRING
+ #define wxUSE_STL_BASED_WXSTRING wxUSE_STD_STRING
+#endif
// in both cases we need to define wxStdString
#if wxUSE_STL_BASED_WXSTRING || wxUSE_STD_STRING
#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
#undef wxUSE_STD_STRING
#define wxUSE_STD_STRING 1
+ // the versions of std::string included with gcc 2.95 and VC6 (for which
+ // _MSC_VER == 1200) and eVC4 (_MSC_VER == 1201) lack clear() method
#if (defined(__GNUG__) && (__GNUG__ < 3)) || \
- (defined(_MSC_VER) && (_MSC_VER <= 1200))
+ !wxCHECK_VISUALC_VERSION(7) || defined(__EVC4__)
#define wxSTRING_BASE_HASNT_CLEAR
#endif
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() : m_ptr(NULL) { } \
+ 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+(ptrdiff_t n) const \
+ { return iterator_name(m_ptr + n); } \
+ iterator_name operator-(ptrdiff_t n) const \
+ { return iterator_name(m_ptr - n); } \
+ iterator_name& operator+=(ptrdiff_t n) \
+ { m_ptr += n; return *this; } \
+ iterator_name& operator-=(ptrdiff_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 */ \
+ pointer GetPtr() const { return m_ptr; } \
+ \
+ friend class 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 WXDLLIMPEXP_FWD_BASE const_iterator;
+
+ class WXDLLIMPEXP_BASE iterator
+ {
+ WX_DEFINE_STRINGIMPL_ITERATOR(iterator,
+ wxStringCharType&,
+ wxStringCharType*);
+
+ friend class const_iterator;
+ };
+
+ class WXDLLIMPEXP_BASE 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
wxStringImpl(const wxStringImpl& stringSrc)
{
wxASSERT_MSG( stringSrc.GetStringData()->IsValid(),
- _T("did you forget to call UngetWriteBuf()?") );
+ wxT("did you forget to call UngetWriteBuf()?") );
if ( stringSrc.empty() ) {
// nothing to do for an empty string
wxStringImpl(const wxStringImpl& str, size_t nPos, size_t nLen)
{
wxASSERT_MSG( str.GetStringData()->IsValid(),
- _T("did you forget to call UngetWriteBuf()?") );
+ wxT("did you forget to call UngetWriteBuf()?") );
Init();
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()
- {
#if defined(__VISUALC__) && (__VISUALC__ >= 1200)
- //RN - according to the above VC++ does indeed inline this,
- //even though it spits out two warnings
- #pragma warning (disable:4714)
+ // disable warning about Unlock() below not being inlined (first, it
+ // seems to be inlined nevertheless and second, even if it isn't, there
+ // is nothing we can do about this
+ #pragma warning(push)
+ #pragma warning (disable:4714)
#endif
+ // dtor is not virtual, this class must not be inherited from!
+ ~wxStringImpl()
+ {
GetStringData()->Unlock();
}
#if defined(__VISUALC__) && (__VISUALC__ >= 1200)
- //re-enable inlining warning
- #pragma warning (default:4714)
+ #pragma warning(pop)
#endif
+
// overloaded assignment
// from another wxString
wxStringImpl& operator=(const wxStringImpl& stringSrc);
// lib.string.access
// return the character at position n
+ value_type operator[](size_type n) const { return m_pchData[n]; }
value_type at(size_type n) const
{ wxASSERT_VALID_INDEX( n ); return m_pchData[n]; }
// returns the writable character at position n
+ reference operator[](size_type n) { CopyBeforeWrite(); return m_pchData[n]; }
reference at(size_type n)
{
wxASSERT_VALID_INDEX( n );
wxStringImpl& append(size_t n, wxStringCharType ch);
// append from first to last
wxStringImpl& append(const_iterator first, const_iterator last)
- { ConcatSelf(last - first, first); return *this; }
+ { ConcatSelf(last - first, first.GetPtr()); return *this; }
// same as `this_string = str'
wxStringImpl& assign(const wxStringImpl& str)
{ return *this = str; }
// same as ` = str[pos..pos + n]
wxStringImpl& assign(const wxStringImpl& str, size_t pos, size_t n)
- { clear(); return append(str, pos, n); }
+ { return replace(0, npos, 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)); }
+ { return replace(0, npos, sz, wxStrlen(sz)); }
wxStringImpl& assign(const wxStringCharType *sz, size_t n)
- { clear(); return append(sz, n); }
+ { return replace(0, npos, sz, n); }
// same as `= n copies of ch'
wxStringImpl& assign(size_t n, wxStringCharType ch)
- { clear(); return append(n, ch); }
+ { return replace(0, npos, n, ch); }
// assign from first to last
wxStringImpl& assign(const_iterator first, const_iterator last)
- { clear(); return append(first, last); }
+ { return replace(begin(), end(), first, last); }
// first valid index position
const_iterator begin() const { return m_pchData; }
// 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); }
+ { insert(it - begin(), first.GetPtr(), last - first); }
void insert(iterator it, size_type n, wxStringCharType ch)
{ insert(it - begin(), n, ch); }
const wxStringCharType* data() const { return m_pchData; }
// replaces the substring of length nLen starting at nStart
- wxStringImpl& replace(size_t nStart, size_t nLen, const wxStringCharType* sz);
+ wxStringImpl& replace(size_t nStart, size_t nLen, const wxStringCharType* sz)
+ { return replace(nStart, nLen, sz, npos); }
// replaces the substring of length nLen starting at nStart
wxStringImpl& replace(size_t nStart, size_t nLen, const wxStringImpl& str)
- { return replace(nStart, nLen, str.c_str()); }
+ { return replace(nStart, nLen, str.c_str(), str.length()); }
// replaces the substring with nCount copies of ch
- wxStringImpl& replace(size_t nStart, size_t nLen, size_t nCount, wxStringCharType ch);
+ wxStringImpl& replace(size_t nStart, size_t nLen,
+ size_t nCount, wxStringCharType ch)
+ { return replace(nStart, nLen, wxStringImpl(nCount, ch)); }
// replaces a substring with another substring
wxStringImpl& replace(size_t nStart, size_t nLen,
- const wxStringImpl& str, size_t nStart2, size_t nLen2);
+ const wxStringImpl& str, size_t nStart2, size_t nLen2)
+ { return replace(nStart, nLen, str.substr(nStart2, nLen2)); }
// replaces the substring with first nCount chars of sz
wxStringImpl& replace(size_t nStart, size_t nLen,
const wxStringCharType* sz, size_t nCount);
+
wxStringImpl& replace(iterator first, iterator last, const_pointer s)
{ return replace(first - begin(), last - first, s); }
wxStringImpl& replace(iterator first, iterator last, const_pointer s,
{ return replace(first - begin(), last - first, n, c); }
wxStringImpl& replace(iterator first, iterator last,
const_iterator first1, const_iterator last1)
- { return replace(first - begin(), last - first, first1, last1 - first1); }
+ { return replace(first - begin(), last - first, first1.GetPtr(), last1 - first1); }
// swap two strings
void swap(wxStringImpl& str);
// 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
// string += char
wxStringImpl& operator+=(wxStringCharType ch) { return append(1, ch); }
-#if !wxUSE_UNICODE_UTF8
// helpers for wxStringBuffer and wxStringBufferLength
wxStringCharType *DoGetWriteBuf(size_t nLen);
void DoUngetWriteBuf();
void DoUngetWriteBuf(size_t nLen);
-#endif
- friend class WXDLLIMPEXP_BASE wxString;
+ friend class WXDLLIMPEXP_FWD_BASE wxString;
};
#endif // !wxUSE_STL_BASED_WXSTRING
projects / wxWidgets.git / blobdiff