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correct (working) version of wxString

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git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@290 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
This commit is contained in:
Vadim Zeitlin
1998-07-17 20:51:36 +00:00
parent 36af0bc423
commit 6b95b20d03
1 changed files with 68 additions and 56 deletions
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122
include/wx/string.h
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@@ -184,8 +184,8 @@ struct WXDLLEXPORT wxStringData
friend class wxArrayString;
// NB: this data must be here (before all other functions) to be sure that all
// inline functions are really inlined by all compilers
// NB: special care was taken in arrangin the member functions in such order
// that all inline functions can be effectively inlined
private:
// points to data preceded by wxStringData structure with ref count info
char *m_pchData;
@@ -193,23 +193,62 @@ private:
// accessor to string data
wxStringData* GetStringData() const { return (wxStringData*)m_pchData - 1; }
// string (re)initialization functions
// initializes the string to the empty value (must be called only from
// ctors, use Reinit() otherwise)
void Init() { m_pchData = (char *)g_szNul; }
// initializaes the string with (a part of) C-string
void InitWith(const char *psz, size_t nPos = 0, size_t nLen = STRING_MAXLEN);
// as Init, but also frees old data
void Reinit() { GetStringData()->Unlock(); Init(); }
// memory allocation
// allocates memory for string of lenght nLen
void AllocBuffer(size_t nLen);
// copies data to another string
void AllocCopy(wxString&, int, int) const;
// effectively copies data to string
void AssignCopy(size_t, const char *);
// append a (sub)string
void ConcatSelf(int nLen, const char *src);
// functions called before writing to the string: they copy it if there
// are other references to our data (should be the only owner when writing)
void CopyBeforeWrite();
void AllocBeforeWrite(size_t);
public:
/** @name constructors & dtor */
//@{
/// ctor for an empty string
wxString();
wxString() { Init(); }
/// copy ctor
wxString(const wxString& stringSrc);
wxString(const wxString& stringSrc)
{
wxASSERT( stringSrc.GetStringData()->IsValid() );
if ( stringSrc.IsEmpty() ) {
// nothing to do for an empty string
Init();
}
else {
m_pchData = stringSrc.m_pchData; // share same data
GetStringData()->Lock(); // => one more copy
}
}
/// string containing nRepeat copies of ch
wxString(char ch, size_t nRepeat = 1);
/// ctor takes first nLength characters from C string
wxString(const char *psz, size_t nLength = STRING_MAXLEN);
// (default value of STRING_MAXLEN means take all the string)
wxString(const char *psz, size_t nLength = STRING_MAXLEN)
{ InitWith(psz, 0, nLength); }
/// from C string (for compilers using unsigned char)
wxString(const unsigned char* psz, size_t nLength = STRING_MAXLEN);
/// from wide (UNICODE) string
wxString(const wchar_t *pwz);
/// dtor is not virtual, this class must not be inherited from!
~wxString();
~wxString() { GetStringData()->Unlock(); }
//@}
/** @name generic attributes & operations */
@@ -290,14 +329,6 @@ public:
/** @name string concatenation */
//@{
/** @name in place concatenation */
//@{
/// string += string
void operator+=(const wxString& s) { (void)operator<<(s); }
/// string += C string
void operator+=(const char *psz) { (void)operator<<(psz); }
/// string += char
void operator+=(char ch) { (void)operator<<(ch); }
//@}
/** @name concatenate and return the result
left to right associativity of << allows to write
things like "str << str1 << str2 << ..." */
@@ -317,6 +348,15 @@ public:
wxString& operator<<(char ch) { ConcatSelf(1, &ch); return *this; }
//@}
//@{
/// string += string
void operator+=(const wxString& s) { (void)operator<<(s); }
/// string += C string
void operator+=(const char *psz) { (void)operator<<(psz); }
/// string += char
void operator+=(char ch) { (void)operator<<(ch); }
//@}
/** @name return resulting string */
//@{
///
@@ -466,14 +506,17 @@ public:
{ return cmp == exact ? Cmp(psz) : CmpNoCase(psz); }
/// same as Mid (substring extraction)
inline wxString operator()(size_t start, size_t len) const { return Mid(start, len); }
inline wxString operator()(size_t start, size_t len) const
{ return Mid(start, len); }
/// same as += or <<
inline wxString& Append(const char* psz) { return *this << psz; }
inline wxString& Append(char ch, int count = 1) { wxString str(ch, count); (*this) += str; return *this; }
inline wxString& Append(char ch, int count = 1)
{ wxString str(ch, count); (*this) += str; return *this; }
///
wxString& Prepend(const wxString& str) { *this = str + *this; return *this; }
wxString& Prepend(const wxString& str)
{ *this = str + *this; return *this; }
/// same as Len
size_t Length() const { return Len(); }
/// same as MakeLower
@@ -491,8 +534,8 @@ public:
wxString& RemoveLast() { return Truncate(Len() - 1); }
// Robert Roebling
wxString& Remove(size_t nStart, size_t nLen) { return erase( nStart, nLen ); }
wxString& Remove(size_t nStart, size_t nLen)
{ return erase( nStart, nLen ); }
size_t First( const char ch ) const { return find(ch); }
size_t First( const char* psz ) const { return find(psz); }
@@ -516,7 +559,11 @@ public:
/** @name constructors */
//@{
/// take nLen chars starting at nPos
wxString(const wxString& s, size_t nPos, size_t nLen = npos);
wxString(const wxString& str, size_t nPos, size_t nLen = npos)
{
wxASSERT( str.GetStringData()->IsValid() );
InitWith(str.c_str(), nPos, nLen == npos ? 0 : nLen);
}
/// take all characters from pStart to pEnd
wxString(const void *pStart, const void *pEnd);
//@}
@@ -725,35 +772,6 @@ public:
wxString substr(size_t nStart = 0, size_t nLen = npos) const;
//@}
#endif
private:
// string (re)initialization functions
// initializes the string to the empty value (must be called only from
// ctors, use Reinit() otherwise)
void Init() { m_pchData = (char *)g_szNul; }
// initializaes the string with (a part of) C-string
void InitWith(const char *psz, size_t nPos = 0, size_t nLen = STRING_MAXLEN);
// as Init, but also frees old data
void Reinit() { GetStringData()->Unlock(); Init(); }
// memory allocation
// allocates memory for string of lenght nLen
void AllocBuffer(size_t nLen);
// copies data to another string
void AllocCopy(wxString&, int, int) const;
// effectively copies data to string
void AssignCopy(size_t, const char *);
// append a (sub)string
void ConcatCopy(int nLen1, const char *src1, int nLen2, const char *src2);
void ConcatSelf(int nLen, const char *src);
// functions called before writing to the string: they copy it if there
// other references (should be the only owner when writing)
void CopyBeforeWrite();
void AllocBeforeWrite(size_t);
};
// ----------------------------------------------------------------------------
@@ -853,12 +871,6 @@ private:
char **m_pItems; // pointer to data
};
// ---------------------------------------------------------------------------
// implementation of inline functions
// ---------------------------------------------------------------------------
// Put back into class, since BC++ can't create precompiled header otherwise
// ---------------------------------------------------------------------------
/** @name wxString comparaison functions
@memo Comparaisons are case sensitive