]> git.saurik.com Git - wxWidgets.git/blobdiff - include/wx/stringimpl.h
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[wxWidgets.git] / include / wx / stringimpl.h
index b680b52cf1a03ff9c317939107eb4c95b04d9fe0..7a9adb99bf90dde84b8456e8dcffa153b7346c46 100644 (file)
@@ -23,7 +23,8 @@
 // ----------------------------------------------------------------------------
 
 #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>
 
 
 // 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
 
 
 // ----------------------------------------------------------------------------
@@ -57,17 +62,20 @@ extern WXDLLIMPEXP_DATA_BASE(const wxChar*) wxEmptyString;
 #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
 
@@ -97,8 +105,8 @@ struct WXDLLIMPEXP_BASE wxStringData
   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); }
@@ -143,7 +151,11 @@ protected:
   // 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
@@ -186,6 +198,7 @@ public:
         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; }                        \
@@ -206,21 +219,13 @@ public:
             return tmp;                                                       \
         }                                                                     \
                                                                               \
-        iterator_name operator+(int n) const                                  \
+        iterator_name operator+(ptrdiff_t 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                               \
+        iterator_name operator-(ptrdiff_t n) const                            \
             { return iterator_name(m_ptr - n); }                              \
-        iterator_name& operator+=(int n)                                      \
+        iterator_name& operator+=(ptrdiff_t 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)                                   \
+        iterator_name& operator-=(ptrdiff_t n)                                \
             { m_ptr -= n; return *this; }                                     \
                                                                               \
         difference_type operator-(const iterator_name& i) const               \
@@ -242,18 +247,18 @@ public:
                                                                               \
     private:                                                                  \
         /* for wxStringImpl use only */                                       \
-        operator pointer() const { return m_ptr; }                            \
+        pointer GetPtr() const { return m_ptr; }                              \
                                                                               \
-        friend class WXDLLIMPEXP_BASE wxStringImpl;                           \
+        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 const_iterator;
+  class WXDLLIMPEXP_FWD_BASE const_iterator;
 
-  class iterator
+  class WXDLLIMPEXP_BASE iterator
   {
     WX_DEFINE_STRINGIMPL_ITERATOR(iterator,
                                   wxStringCharType&,
@@ -262,7 +267,7 @@ public:
     friend class const_iterator;
   };
 
-  class const_iterator
+  class WXDLLIMPEXP_BASE const_iterator
   {
   public:
       const_iterator(iterator i) : m_ptr(i.m_ptr) { }
@@ -313,6 +318,17 @@ public:
     // 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()
   {
@@ -385,25 +401,25 @@ public:
   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; }
@@ -430,12 +446,12 @@ public:
     // 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); }
 
@@ -454,18 +470,23 @@ public:
   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,
@@ -477,7 +498,7 @@ public:
     { 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);
@@ -518,14 +539,12 @@ public:
       // 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