// Created: 29/01/98
// RCS-ID: $Id$
// Copyright: (c) 1998 Vadim Zeitlin <zeitlin@dptmaths.ens-cachan.fr>
-// Licence: wxWindows license
+// Licence: wxWindows licence
///////////////////////////////////////////////////////////////////////////////
/*
#ifndef _WX_WXSTRINGH__
#define _WX_WXSTRINGH__
-#ifdef __GNUG__
+#if defined(__GNUG__) && !defined(__APPLE__)
#pragma interface "string.h"
#endif
// compile the std::string compatibility functions if defined
#define wxSTD_STRING_COMPATIBILITY
-// define to derive wxString from wxObject (deprecated!)
-#ifdef WXSTRING_IS_WXOBJECT
- #undef WXSTRING_IS_WXOBJECT
-#endif
-
// ----------------------------------------------------------------------------
// headers
// ----------------------------------------------------------------------------
+#include "wx/defs.h" // everybody should include this
+
#if defined(__WXMAC__) || defined(__VISAGECPP__)
#include <ctype.h>
#endif
#ifdef HAVE_STRINGS_H
#include <strings.h> // for strcasecmp()
-#endif // AIX
+#endif // HAVE_STRINGS_H
-#include "wx/defs.h" // everybody should include this
#include "wx/wxchar.h" // for wxChar
#include "wx/buffer.h" // for wxCharBuffer
#include "wx/strconv.h" // for wxConvertXXX() macros and wxMBConv classes
-#ifndef WX_PRECOMP
- #ifdef WXSTRING_IS_WXOBJECT
- #include "wx/object.h" // base class
- #endif
-#endif // !PCH
-
// ---------------------------------------------------------------------------
// macros
// ---------------------------------------------------------------------------
-// 'naughty' cast
+// casts [unfortunately!] needed to call some broken functions which require
+// "char *" instead of "const char *"
#define WXSTRINGCAST (wxChar *)(const wxChar *)
#define wxCSTRINGCAST (wxChar *)(const wxChar *)
#define wxMBSTRINGCAST (char *)(const char *)
#define wxWCSTRINGCAST (wchar_t *)(const wchar_t *)
// implementation only
-#define ASSERT_VALID_INDEX(i) wxASSERT( (unsigned)(i) <= Len() )
+#define wxASSERT_VALID_INDEX(i) \
+ wxASSERT_MSG( (size_t)(i) <= Len(), _T("invalid index in wxString") )
// ----------------------------------------------------------------------------
// constants
// ----------------------------------------------------------------------------
// global pointer to empty string
-WXDLLEXPORT_DATA(extern const wxChar*) wxEmptyString;
+extern WXDLLIMPEXP_DATA_BASE(const wxChar*) wxEmptyString;
// ---------------------------------------------------------------------------
// global functions complementing standard C string library replacements for
// backwards compatibility only.
// checks whether the passed in pointer is NULL and if the string is empty
-inline bool WXDLLEXPORT IsEmpty(const char *p) { return (!p || !*p); }
+inline bool IsEmpty(const char *p) { return (!p || !*p); }
// safe version of strlen() (returns 0 if passed NULL pointer)
-inline size_t WXDLLEXPORT Strlen(const char *psz)
+inline size_t Strlen(const char *psz)
{ return psz ? strlen(psz) : 0; }
// portable strcasecmp/_stricmp
-inline int WXDLLEXPORT Stricmp(const char *psz1, const char *psz2)
+inline int Stricmp(const char *psz1, const char *psz2)
{
-#if defined(__VISUALC__) || ( defined(__MWERKS__) && defined(__INTEL__) )
+#if defined(__VISUALC__) && defined(__WXWINCE__)
+ register char c1, c2;
+ do {
+ c1 = tolower(*psz1++);
+ c2 = tolower(*psz2++);
+ } while ( c1 && (c1 == c2) );
+
+ return c1 - c2;
+#elif defined(__VISUALC__) || ( defined(__MWERKS__) && defined(__INTEL__) )
return _stricmp(psz1, psz2);
#elif defined(__SC__)
return _stricmp(psz1, psz2);
return stricmp(psz1, psz2);
#elif defined(__WATCOMC__)
return stricmp(psz1, psz2);
+#elif defined(__DJGPP__)
+ return stricmp(psz1, psz2);
#elif defined(__EMX__)
return stricmp(psz1, psz2);
#elif defined(__WXPM__)
#endif // OS/compiler
}
-// wxSnprintf() is like snprintf() if it's available and sprintf() (always
-// available, but dangerous!) if not
-extern int WXDLLEXPORT wxSnprintf(wxChar *buf, size_t len,
- const wxChar *format, ...);
-
-// and wxVsnprintf() is like vsnprintf() or vsprintf()
-extern int WXDLLEXPORT wxVsnprintf(wxChar *buf, size_t len,
- const wxChar *format, va_list argptr);
-
// return an empty wxString
-class WXDLLEXPORT wxString; // not yet defined
+class WXDLLIMPEXP_BASE wxString; // not yet defined
inline const wxString& wxGetEmptyString() { return *(wxString *)&wxEmptyString; }
// ---------------------------------------------------------------------------
// is never used directly (but had to be put here to allow inlining)
// ---------------------------------------------------------------------------
-struct WXDLLEXPORT wxStringData
+struct WXDLLIMPEXP_BASE wxStringData
{
int nRefs; // reference count
size_t nDataLength, // actual string length
// lock/unlock
void Lock() { if ( !IsEmpty() ) nRefs++; }
- // VC++ will refuse to inline this function but profiling shows that it
- // is wrong
+ // VC++ will refuse to inline Unlock but profiling shows that it is wrong
#if defined(__VISUALC__) && (__VISUALC__ >= 1200)
__forceinline
#endif
+ // VC++ free must take place in same DLL as allocation when using non dll
+ // run-time library (e.g. Multithreaded instead of Multithreaded DLL)
+#if defined(__VISUALC__) && defined(_MT) && !defined(_DLL)
+ void Unlock() { if ( !IsEmpty() && --nRefs == 0) Free(); }
+ // we must not inline deallocation since allocation is not inlined
+ void Free();
+#else
void Unlock() { if ( !IsEmpty() && --nRefs == 0) free(this); }
+#endif
// if we had taken control over string memory (GetWriteBuf), it's
// intentionally put in invalid state
// - regular expressions support
// ---------------------------------------------------------------------------
-#ifdef WXSTRING_IS_WXOBJECT
-class WXDLLEXPORT wxString : public wxObject
+class WXDLLIMPEXP_BASE wxString
{
- DECLARE_DYNAMIC_CLASS(wxString)
-#else //WXSTRING_IS_WXOBJECT
-class WXDLLEXPORT wxString
-{
-#endif //WXSTRING_IS_WXOBJECT
-
-friend class WXDLLEXPORT wxArrayString;
+#if !wxUSE_STL
+friend class WXDLLIMPEXP_BASE wxArrayString;
+#endif
// NB: special care was taken in arranging the member functions in such order
// that all inline functions can be effectively inlined, verify that all
void Reinit() { GetStringData()->Unlock(); Init(); }
// memory allocation
- // allocates memory for string of lenght nLen
- void AllocBuffer(size_t nLen);
+ // allocates memory for string of length nLen
+ bool AllocBuffer(size_t nLen);
// copies data to another string
- void AllocCopy(wxString&, int, int) const;
+ bool AllocCopy(wxString&, int, int) const;
// effectively copies data to string
- void AssignCopy(size_t, const wxChar *);
+ bool AssignCopy(size_t, const wxChar *);
// append a (sub)string
- void ConcatSelf(int nLen, const wxChar *src);
+ bool ConcatSelf(size_t nLen, const wxChar *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);
+ bool CopyBeforeWrite();
+ bool AllocBeforeWrite(size_t);
+
+ // if we hadn't made these operators private, it would be possible to
+ // compile "wxString s; s = 17;" without any warnings as 17 is implicitly
+ // converted to char in C and we do have operator=(char)
+ //
+ // NB: we don't need other versions (short/long and unsigned) as attempt
+ // to assign another numeric type to wxString will now result in
+ // ambiguity between operator=(char) and operator=(int)
+ wxString& operator=(int);
- // this method is not implemented - there is _no_ conversion from int to
+ // these methods are not implemented - there is _no_ conversion from int to
// string, you're doing something wrong if the compiler wants to call it!
//
// try `s << i' or `s.Printf("%d", i)' instead
wxString(int);
- wxString(unsigned int);
- wxString(long);
- wxString(unsigned long);
public:
// constructors and destructor
// ctor for an empty string
- wxString() { Init(); }
+ wxString() : m_pchData(NULL) { Init(); }
// copy ctor
- wxString(const wxString& stringSrc)
+ wxString(const wxString& stringSrc) : m_pchData(NULL)
{
- wxASSERT( stringSrc.GetStringData()->IsValid() );
+ wxASSERT_MSG( stringSrc.GetStringData()->IsValid(),
+ _T("did you forget to call UngetWriteBuf()?") );
if ( stringSrc.IsEmpty() ) {
// nothing to do for an empty string
// ctor takes first nLength characters from C string
// (default value of wxSTRING_MAXLEN means take all the string)
wxString(const wxChar *psz, size_t nLength = wxSTRING_MAXLEN)
- { InitWith(psz, 0, nLength); }
+ : m_pchData(NULL)
+ { InitWith(psz, 0, nLength); }
wxString(const wxChar *psz, wxMBConv& WXUNUSED(conv), size_t nLength = wxSTRING_MAXLEN)
- { InitWith(psz, 0, nLength); }
+ : m_pchData(NULL)
+ { InitWith(psz, 0, nLength); }
#if wxUSE_UNICODE
// from multibyte string
// (NB: nLength is right now number of Unicode characters, not
// characters in psz! So try not to use it yet!)
- wxString(const char *psz, wxMBConv& conv = wxConvLibc, size_t nLength = wxSTRING_MAXLEN);
+ wxString(const char *psz, wxMBConv& conv, size_t nLength = wxSTRING_MAXLEN);
// from wxWCharBuffer (i.e. return from wxGetString)
wxString(const wxWCharBuffer& psz)
{ InitWith(psz, 0, wxSTRING_MAXLEN); }
#else // ANSI
// from C string (for compilers using unsigned char)
wxString(const unsigned char* psz, size_t nLength = wxSTRING_MAXLEN)
- { InitWith((const char*)psz, 0, nLength); }
+ : m_pchData(NULL)
+ { InitWith((const char*)psz, 0, nLength); }
#if wxUSE_WCHAR_T
// from wide (Unicode) string
- wxString(const wchar_t *pwz, wxMBConv& conv = wxConvLibc);
+ wxString(const wchar_t *pwz, wxMBConv& conv = wxConvLibc, size_t nLength = wxSTRING_MAXLEN);
#endif // !wxUSE_WCHAR_T
// from wxCharBuffer
wxString(const wxCharBuffer& psz)
- { InitWith(psz, 0, wxSTRING_MAXLEN); }
+ : m_pchData(NULL)
+ { InitWith(psz, 0, wxSTRING_MAXLEN); }
#endif // Unicode/ANSI
// dtor is not virtual, this class must not be inherited from!
bool IsEmpty() const { return Len() == 0; }
// empty string is "FALSE", so !str will return TRUE
bool operator!() const { return IsEmpty(); }
+ // truncate the string to given length
+ wxString& Truncate(size_t uiLen);
// empty string contents
void Empty()
{
- if ( !IsEmpty() )
- Reinit();
+ Truncate(0);
- // should be empty
- wxASSERT( GetStringData()->nDataLength == 0 );
+ wxASSERT_MSG( IsEmpty(), _T("string not empty after call to Empty()?") );
}
// empty the string and free memory
void Clear()
if ( !GetStringData()->IsEmpty() )
Reinit();
- wxASSERT( GetStringData()->nDataLength == 0 ); // should be empty
- wxASSERT( GetStringData()->nAllocLength == 0 ); // and not own any memory
+ wxASSERT_MSG( !GetStringData()->nDataLength &&
+ !GetStringData()->nAllocLength,
+ _T("string should be empty after Clear()") );
}
// contents test
// data access (all indexes are 0 based)
// read access
wxChar GetChar(size_t n) const
- { ASSERT_VALID_INDEX( n ); return m_pchData[n]; }
+ { wxASSERT_VALID_INDEX( n ); return m_pchData[n]; }
// read/write access
wxChar& GetWritableChar(size_t n)
- { ASSERT_VALID_INDEX( n ); CopyBeforeWrite(); return m_pchData[n]; }
+ { wxASSERT_VALID_INDEX( n ); CopyBeforeWrite(); return m_pchData[n]; }
// write access
void SetChar(size_t n, wxChar ch)
- { ASSERT_VALID_INDEX( n ); CopyBeforeWrite(); m_pchData[n] = ch; }
+ { wxASSERT_VALID_INDEX( n ); CopyBeforeWrite(); m_pchData[n] = ch; }
// get last character
wxChar Last() const
- { wxASSERT( !IsEmpty() ); return m_pchData[Len() - 1]; }
+ {
+ wxASSERT_MSG( !IsEmpty(), _T("wxString: index out of bounds") );
+
+ return m_pchData[Len() - 1];
+ }
+
// get writable last character
wxChar& Last()
- { wxASSERT( !IsEmpty() ); CopyBeforeWrite(); return m_pchData[Len()-1]; }
+ {
+ wxASSERT_MSG( !IsEmpty(), _T("wxString: index out of bounds") );
+ CopyBeforeWrite();
+ return m_pchData[Len()-1];
+ }
+
+ /*
+ So why do we have all these overloaded operator[]s? A bit of history:
+ initially there was only one of them, taking size_t. Then people
+ started complaining because they wanted to use ints as indices (I
+ wonder why) and compilers were giving warnings about it, so we had to
+ add the operator[](int). Then it became apparent that you couldn't
+ write str[0] any longer because there was ambiguity between two
+ overloads and so you now had to write str[0u] (or, of course, use the
+ explicit casts to either int or size_t but nobody did this).
+
+ Finally, someone decided to compile wxWin on an Alpha machine and got
+ a surprize: str[0u] didn't compile there because it is of type
+ unsigned int and size_t is unsigned _long_ on Alpha and so there was
+ ambiguity between converting uint to int or ulong. To fix this one we
+ now add operator[](uint) for the machines where size_t is not already
+ the same as unsigned int - hopefully this fixes the problem (for some
+ time)
+
+ The only real fix is, of course, to remove all versions but the one
+ taking size_t...
+ */
// operator version of GetChar
wxChar operator[](size_t n) const
- { ASSERT_VALID_INDEX( n ); return m_pchData[n]; }
+ { wxASSERT_VALID_INDEX( n ); return m_pchData[n]; }
// operator version of GetChar
wxChar operator[](int n) const
- { ASSERT_VALID_INDEX( n ); return m_pchData[n]; }
-#ifdef __alpha__
- // operator version of GetChar
- wxChar operator[](unsigned int n) const
- { ASSERT_VALID_INDEX( n ); return m_pchData[n]; }
-#endif
+ { wxASSERT_VALID_INDEX( n ); return m_pchData[n]; }
// operator version of GetWriteableChar
wxChar& operator[](size_t n)
- { ASSERT_VALID_INDEX( n ); CopyBeforeWrite(); return m_pchData[n]; }
-#ifdef __alpha__
+ { wxASSERT_VALID_INDEX( n ); CopyBeforeWrite(); return m_pchData[n]; }
+
+#ifndef wxSIZE_T_IS_UINT
+ // operator version of GetChar
+ wxChar operator[](unsigned int n) const
+ { wxASSERT_VALID_INDEX( n ); return m_pchData[n]; }
+
// operator version of GetWriteableChar
- wxChar& operator[](unsigned int n)
- { ASSERT_VALID_INDEX( n ); CopyBeforeWrite(); return m_pchData[n]; }
-#endif
+ wxChar& operator[](unsigned int n)
+ { wxASSERT_VALID_INDEX( n ); CopyBeforeWrite(); return m_pchData[n]; }
+#endif // size_t != unsigned int
// implicit conversion to C string
operator const wxChar*() const { return m_pchData; }
+
// explicit conversion to C string (use this with printf()!)
const wxChar* c_str() const { return m_pchData; }
- // identical to c_str()
+ // identical to c_str(), for wxWin 1.6x compatibility
const wxChar* wx_str() const { return m_pchData; }
- // identical to c_str()
+ // identical to c_str(), for MFC compatibility
const wxChar* GetData() const { return m_pchData; }
- // conversions with (possible) format convertions: have to return a
+ // conversion to/from plain (i.e. 7 bit) ASCII: this is useful for
+ // converting numbers or strings which are certain not to contain special
+ // chars (typically system functions, X atoms, environment variables etc.)
+ //
+ // the behaviour of these functions with the strings containing anything
+ // else than 7 bit ASCII characters is undefined, use at your own risk.
+#if wxUSE_UNICODE
+ static wxString FromAscii(const char *ascii); // string
+ static wxString FromAscii(const char ascii); // char
+ const wxCharBuffer ToAscii() const;
+#else // ANSI
+ static wxString FromAscii(const char *ascii) { return wxString( ascii ); }
+ static wxString FromAscii(const char ascii) { return wxString( ascii ); }
+ const char *ToAscii() const { return c_str(); }
+#endif // Unicode/!Unicode
+
+ // conversions with (possible) format conversions: have to return a
// buffer with temporary data
//
// the functions defined (in either Unicode or ANSI) mode are mb_str() to
wxString& operator=(const wxChar *psz);
#if wxUSE_UNICODE
// from wxWCharBuffer
- wxString& operator=(const wxWCharBuffer& psz) { return operator=((const wchar_t *)psz); }
+ wxString& operator=(const wxWCharBuffer& psz)
+ { (void) operator=((const wchar_t *)psz); return *this; }
#else // ANSI
// from another kind of C string
wxString& operator=(const unsigned char* psz);
wxString& operator=(const wchar_t *pwz);
#endif
// from wxCharBuffer
- wxString& operator=(const wxCharBuffer& psz) { return operator=((const char *)psz); }
+ wxString& operator=(const wxCharBuffer& psz)
+ { (void) operator=((const char *)psz); return *this; }
#endif // Unicode/ANSI
// string concatenation
// string += string
wxString& operator<<(const wxString& s)
{
- wxASSERT( s.GetStringData()->IsValid() );
+ wxASSERT_MSG( s.GetStringData()->IsValid(),
+ _T("did you forget to call UngetWriteBuf()?") );
ConcatSelf(s.Len(), s);
return *this;
// string += buffer (i.e. from wxGetString)
#if wxUSE_UNICODE
- wxString& operator<<(const wxWCharBuffer& s) { (void)operator<<((const wchar_t *)s); return *this; }
- void operator+=(const wxWCharBuffer& s) { (void)operator<<((const wchar_t *)s); }
-#else
- wxString& operator<<(const wxCharBuffer& s) { (void)operator<<((const char *)s); return *this; }
- void operator+=(const wxCharBuffer& s) { (void)operator<<((const char *)s); }
-#endif
+ wxString& operator<<(const wxWCharBuffer& s)
+ { (void)operator<<((const wchar_t *)s); return *this; }
+ void operator+=(const wxWCharBuffer& s)
+ { (void)operator<<((const wchar_t *)s); }
+#else // !wxUSE_UNICODE
+ wxString& operator<<(const wxCharBuffer& s)
+ { (void)operator<<((const char *)s); return *this; }
+ void operator+=(const wxCharBuffer& s)
+ { (void)operator<<((const char *)s); }
+#endif // wxUSE_UNICODE/!wxUSE_UNICODE
// string += C string
+ wxString& Append(const wxString& s)
+ {
+ // test for IsEmpty() to share the string if possible
+ if ( IsEmpty() )
+ *this = s;
+ else
+ ConcatSelf(s.Length(), s.c_str());
+ return *this;
+ }
wxString& Append(const wxChar* psz)
{ ConcatSelf(wxStrlen(psz), psz); return *this; }
// append count copies of given character
// non-destructive concatenation
//
- friend wxString WXDLLEXPORT operator+(const wxString& string1, const wxString& string2);
+ friend wxString WXDLLIMPEXP_BASE operator+(const wxString& string1, const wxString& string2);
//
- friend wxString WXDLLEXPORT operator+(const wxString& string, wxChar ch);
+ friend wxString WXDLLIMPEXP_BASE operator+(const wxString& string, wxChar ch);
//
- friend wxString WXDLLEXPORT operator+(wxChar ch, const wxString& string);
+ friend wxString WXDLLIMPEXP_BASE operator+(wxChar ch, const wxString& string);
//
- friend wxString WXDLLEXPORT operator+(const wxString& string, const wxChar *psz);
+ friend wxString WXDLLIMPEXP_BASE operator+(const wxString& string, const wxChar *psz);
//
- friend wxString WXDLLEXPORT operator+(const wxChar *psz, const wxString& string);
+ friend wxString WXDLLIMPEXP_BASE operator+(const wxChar *psz, const wxString& string);
// stream-like functions
// insert an int into string
wxString operator()(size_t start, size_t len) const
{ return Mid(start, len); }
- // check that the tring starts with prefix and return the rest of the
+ // check that the string starts with prefix and return the rest of the
// string in the provided pointer if it is not NULL, otherwise return
// FALSE
bool StartsWith(const wxChar *prefix, wxString *rest = NULL) const;
wxString Left(size_t nCount) const;
// get last nCount characters
wxString Right(size_t nCount) const;
- // get all characters before the first occurence of ch
+ // get all characters before the first occurance of ch
// (returns the whole string if ch not found)
wxString BeforeFirst(wxChar ch) const;
// get all characters before the last occurence of ch
wxString& Trim(bool bFromRight = TRUE);
// add nCount copies chPad in the beginning or at the end (default)
wxString& Pad(size_t nCount, wxChar chPad = wxT(' '), bool bFromRight = TRUE);
- // truncate string to given length
- wxString& Truncate(size_t uiLen);
// searching and replacing
// searching (return starting index, or -1 if not found)
// check if the string contents matches a mask containing '*' and '?'
bool Matches(const wxChar *szMask) const;
- // conversion to numbers: all functions return TRUE only if the whole string
- // is a number and put the value of this number into the pointer provided
+ // conversion to numbers: all functions return TRUE only if the whole
+ // string is a number and put the value of this number into the pointer
+ // provided, the base is the numeric base in which the conversion should be
+ // done and must be comprised between 2 and 36 or be 0 in which case the
+ // standard C rules apply (leading '0' => octal, "0x" => hex)
// convert to a signed integer
- bool ToLong(long *val) const;
+ bool ToLong(long *val, int base = 10) const;
// convert to an unsigned integer
- bool ToULong(unsigned long *val) const;
+ bool ToULong(unsigned long *val, int base = 10) const;
// convert to a double
bool ToDouble(double *val) const;
// formated input/output
// as sprintf(), returns the number of characters written or < 0 on error
- int Printf(const wxChar *pszFormat, ...);
+ // (take 'this' into account in attribute parameter count)
+ int Printf(const wxChar *pszFormat, ...) ATTRIBUTE_PRINTF_2;
// as vprintf(), returns the number of characters written or < 0 on error
int PrintfV(const wxChar* pszFormat, va_list argptr);
// returns the string containing the result of Printf() to it
- static wxString Format(const wxChar *pszFormat, ...);
+ static wxString Format(const wxChar *pszFormat, ...) ATTRIBUTE_PRINTF_1;
// the same as above, but takes a va_list
static wxString FormatV(const wxChar *pszFormat, va_list argptr);
// raw access to string memory
// ensure that string has space for at least nLen characters
// only works if the data of this string is not shared
- void Alloc(size_t nLen);
+ bool Alloc(size_t nLen);
// minimize the string's memory
// only works if the data of this string is not shared
- void Shrink();
+ bool Shrink();
// get writable buffer of at least nLen bytes. Unget() *must* be called
// a.s.a.p. to put string back in a reasonable state!
wxChar *GetWriteBuf(size_t nLen);
// values for first parameter of Strip function
enum stripType {leading = 0x1, trailing = 0x2, both = 0x3};
- // use Printf()
- int sprintf(const wxChar *pszFormat, ...);
+ // use Printf()
+ // (take 'this' into account in attribute parameter count)
+ int sprintf(const wxChar *pszFormat, ...) ATTRIBUTE_PRINTF_2;
// use Cmp()
inline int CompareTo(const wxChar* psz, caseCompare cmp = exact) const
// standard types
typedef wxChar value_type;
+ typedef size_t size_type;
+ typedef value_type *iterator;
typedef const value_type *const_iterator;
// an 'invalid' value for string index
// constructors
// take nLen chars starting at nPos
wxString(const wxString& str, size_t nPos, size_t nLen)
+ : m_pchData(NULL)
{
- wxASSERT( str.GetStringData()->IsValid() );
+ wxASSERT_MSG( str.GetStringData()->IsValid(),
+ _T("did you forget to call UngetWriteBuf()?") );
+
InitWith(str.c_str(), nPos, nLen == npos ? 0 : nLen);
}
// take all characters from pStart to pEnd
// returns true if the string is empty
bool empty() const { return IsEmpty(); }
// inform string about planned change in size
- void reserve(size_t size) { Alloc(size); }
+ void reserve(size_t sz) { Alloc(sz); }
// lib.string.access
// return the character at position n
// position one after the last valid one
const_iterator end() const { return wx_str() + length(); }
+ // first valid index position
+ iterator begin() { CopyBeforeWrite(); return m_pchData; }
+ // position one after the last valid one
+ iterator end() { CopyBeforeWrite(); return m_pchData + length(); }
+
// lib.string.modifiers
// append a string
wxString& append(const wxString& str)
wxString& append(size_t n, wxChar ch) { return Pad(n, ch); }
// same as `this_string = str'
- wxString& assign(const wxString& str) { return (*this) = str; }
+ wxString& assign(const wxString& str)
+ { return *this = str; }
// same as ` = str[pos..pos + n]
wxString& assign(const wxString& str, size_t pos, size_t n)
- { return *this = wxString((const wxChar *)str + pos, n); }
+ { Empty(); return Append(str.c_str() + pos, n); }
// same as `= first n (or all if n == npos) characters of sz'
wxString& assign(const wxChar *sz, size_t n = npos)
- { return *this = wxString(sz, n); }
+ { Empty(); return Append(sz, n == npos ? wxStrlen(sz) : n); }
// same as `= n copies of ch'
wxString& assign(size_t n, wxChar ch)
- { return *this = wxString(ch, n); }
+ { Empty(); return Append(ch, n); }
// insert another string
wxString& insert(size_t nPos, const wxString& str);
#endif // wxSTD_STRING_COMPATIBILITY
};
+// define wxArrayString, for compatibility
+#if WXWIN_COMPATIBILITY_2_4 && !wxUSE_STL
+ #include "wx/arrstr.h"
+#endif
+
// ----------------------------------------------------------------------------
-// The string array uses it's knowledge of internal structure of the wxString
-// class to optimize string storage. Normally, we would store pointers to
-// string, but as wxString is, in fact, itself a pointer (sizeof(wxString) is
-// sizeof(char *)) we store these pointers instead. The cast to "wxString *" is
-// really all we need to turn such pointer into a string!
-//
-// Of course, it can be called a dirty hack, but we use twice less memory and
-// this approach is also more speed efficient, so it's probably worth it.
-//
-// Usage notes: when a string is added/inserted, a new copy of it is created,
-// so the original string may be safely deleted. When a string is retrieved
-// from the array (operator[] or Item() method), a reference is returned.
+// wxStringBuffer: a tiny class allowing to get a writable pointer into string
// ----------------------------------------------------------------------------
-class WXDLLEXPORT wxArrayString
+#if wxUSE_STL
+
+class WXDLLIMPEXP_BASE wxStringBuffer
{
public:
- // type of function used by wxArrayString::Sort()
- typedef int (*CompareFunction)(const wxString& first,
- const wxString& second);
+ wxStringBuffer(wxString& str, size_t lenWanted = 1024)
+ : m_str(str), m_buf(lenWanted), m_len(lenWanted)
+ { }
- // constructors and destructor
- // default ctor: if autoSort is TRUE, the array is always sorted (in
- // alphabetical order)
- wxArrayString(bool autoSort = FALSE);
- // copy ctor
- wxArrayString(const wxArrayString& array);
- // assignment operator
- wxArrayString& operator=(const wxArrayString& src);
- // not virtual, this class should not be derived from
- ~wxArrayString();
-
- // memory management
- // empties the list, but doesn't release memory
- void Empty();
- // empties the list and releases memory
- void Clear();
- // preallocates memory for given number of items
- void Alloc(size_t nCount);
- // minimzes the memory usage (by freeing all extra memory)
- void Shrink();
-
- // simple accessors
- // number of elements in the array
- size_t GetCount() const { return m_nCount; }
- // is it empty?
- bool IsEmpty() const { return m_nCount == 0; }
- // number of elements in the array (GetCount is preferred API)
- size_t Count() const { return m_nCount; }
-
- // items access (range checking is done in debug version)
- // get item at position uiIndex
- wxString& Item(size_t nIndex) const
- { wxASSERT( nIndex < m_nCount ); return *(wxString *)&(m_pItems[nIndex]); }
- // same as Item()
- wxString& operator[](size_t nIndex) const { return Item(nIndex); }
- // get last item
- wxString& Last() const { wxASSERT( !IsEmpty() ); return Item(Count() - 1); }
-
- // item management
- // Search the element in the array, starting from the beginning if
- // bFromEnd is FALSE or from end otherwise. If bCase, comparison is case
- // sensitive (default). Returns index of the first item matched or
- // wxNOT_FOUND
- int Index (const wxChar *sz, bool bCase = TRUE, bool bFromEnd = FALSE) const;
- // add new element at the end (if the array is not sorted), return its
- // index
- size_t Add(const wxString& str);
- // add new element at given position
- void Insert(const wxString& str, size_t uiIndex);
- // remove first item matching this value
- void Remove(const wxChar *sz);
- // remove item by index
- void Remove(size_t nIndex);
- void RemoveAt(size_t nIndex) { Remove(nIndex); }
-
- // sorting
- // sort array elements in alphabetical order (or reversed alphabetical
- // order if reverseOrder parameter is TRUE)
- void Sort(bool reverseOrder = FALSE);
- // sort array elements using specified comparaison function
- void Sort(CompareFunction compareFunction);
-
- // comparison
- // compare two arrays case sensitively
- bool operator==(const wxArrayString& a) const;
- // compare two arrays case sensitively
- bool operator!=(const wxArrayString& a) const { return !(*this == a); }
-
-protected:
- void Copy(const wxArrayString& src); // copies the contents of another array
+ ~wxStringBuffer() { m_str.assign(m_buf.data(), wxStrlen(m_buf.data())); }
+
+ operator wxChar*() { return m_buf.data(); }
private:
- void Grow(); // makes array bigger if needed
- void Free(); // free all the strings stored
+ wxString& m_str;
+#if wxUSE_UNICODE
+ wxWCharBuffer m_buf;
+#else
+ wxCharBuffer m_buf;
+#endif
+ size_t m_len;
- void DoSort(); // common part of all Sort() variants
+ DECLARE_NO_COPY_CLASS(wxStringBuffer)
+};
- size_t m_nSize, // current size of the array
- m_nCount; // current number of elements
+class WXDLLIMPEXP_BASE wxStringBufferLength
+{
+public:
+ wxStringBufferLength(wxString& str, size_t lenWanted = 1024)
+ : m_str(str), m_buf(lenWanted), m_len(0), m_lenSet(false)
+ { }
- wxChar **m_pItems; // pointer to data
+ ~wxStringBufferLength()
+ {
+ wxASSERT(m_lenSet);
+ m_str.assign(m_buf.data(), m_len);
+ }
- bool m_autoSort; // if TRUE, keep the array always sorted
+ operator wxChar*() { return m_buf.data(); }
+ void SetLength(size_t length) { m_len = length; m_lenSet = true; }
+
+private:
+ wxString& m_str;
+#if wxUSE_UNICODE
+ wxWCharBuffer m_buf;
+#else
+ wxCharBuffer m_buf;
+#endif
+ size_t m_len;
+ bool m_lenSet;
+
+ DECLARE_NO_COPY_CLASS(wxStringBufferLength)
+};
+
+#else // if !wxUSE_STL
+
+class WXDLLIMPEXP_BASE wxStringBuffer
+{
+public:
+ wxStringBuffer(wxString& str, size_t lenWanted = 1024)
+ : m_str(str), m_buf(NULL)
+ { m_buf = m_str.GetWriteBuf(lenWanted); }
+
+ ~wxStringBuffer() { m_str.UngetWriteBuf(); }
+
+ operator wxChar*() const { return m_buf; }
+
+private:
+ wxString& m_str;
+ wxChar *m_buf;
+
+ DECLARE_NO_COPY_CLASS(wxStringBuffer)
};
-class WXDLLEXPORT wxSortedArrayString : public wxArrayString
+class WXDLLIMPEXP_BASE wxStringBufferLength
{
public:
- wxSortedArrayString() : wxArrayString(TRUE)
- { }
- wxSortedArrayString(const wxArrayString& array) : wxArrayString(TRUE)
- { Copy(array); }
+ wxStringBufferLength(wxString& str, size_t lenWanted = 1024)
+ : m_str(str), m_buf(NULL), m_len(0), m_lenSet(false)
+ { m_buf = m_str.GetWriteBuf(lenWanted); }
+
+ ~wxStringBufferLength()
+ {
+ wxASSERT(m_lenSet);
+ m_str.UngetWriteBuf(m_len);
+ }
+
+ operator wxChar*() const { return m_buf; }
+ void SetLength(size_t length) { m_len = length; m_lenSet = true; }
+
+private:
+ wxString& m_str;
+ wxChar *m_buf;
+ size_t m_len;
+ bool m_lenSet;
+
+ DECLARE_NO_COPY_CLASS(wxStringBufferLength)
};
+#endif // !wxUSE_STL
+
// ---------------------------------------------------------------------------
// wxString comparison functions: operator versions are always case sensitive
// ---------------------------------------------------------------------------
{ return (s2.Cmp((const char *)s1) != 0); }
#endif // wxUSE_UNICODE/!wxUSE_UNICODE
-wxString WXDLLEXPORT operator+(const wxString& string1, const wxString& string2);
-wxString WXDLLEXPORT operator+(const wxString& string, wxChar ch);
-wxString WXDLLEXPORT operator+(wxChar ch, const wxString& string);
-wxString WXDLLEXPORT operator+(const wxString& string, const wxChar *psz);
-wxString WXDLLEXPORT operator+(const wxChar *psz, const wxString& string);
+wxString WXDLLIMPEXP_BASE operator+(const wxString& string1, const wxString& string2);
+wxString WXDLLIMPEXP_BASE operator+(const wxString& string, wxChar ch);
+wxString WXDLLIMPEXP_BASE operator+(wxChar ch, const wxString& string);
+wxString WXDLLIMPEXP_BASE operator+(const wxString& string, const wxChar *psz);
+wxString WXDLLIMPEXP_BASE operator+(const wxChar *psz, const wxString& string);
#if wxUSE_UNICODE
-inline wxString WXDLLEXPORT operator+(const wxString& string, const wxWCharBuffer& buf)
+inline wxString operator+(const wxString& string, const wxWCharBuffer& buf)
{ return string + (const wchar_t *)buf; }
-inline wxString WXDLLEXPORT operator+(const wxWCharBuffer& buf, const wxString& string)
+inline wxString operator+(const wxWCharBuffer& buf, const wxString& string)
{ return (const wchar_t *)buf + string; }
#else // !wxUSE_UNICODE
-inline wxString WXDLLEXPORT operator+(const wxString& string, const wxCharBuffer& buf)
+inline wxString operator+(const wxString& string, const wxCharBuffer& buf)
{ return string + (const char *)buf; }
-inline wxString WXDLLEXPORT operator+(const wxCharBuffer& buf, const wxString& string)
+inline wxString operator+(const wxCharBuffer& buf, const wxString& string)
{ return (const char *)buf + string; }
#endif // wxUSE_UNICODE/!wxUSE_UNICODE
// ---------------------------------------------------------------------------
// don't pollute the library user's name space
-#undef ASSERT_VALID_INDEX
+#undef wxASSERT_VALID_INDEX
#if defined(wxSTD_STRING_COMPATIBILITY) && wxUSE_STD_IOSTREAM
-#include "wx/ioswrap.h"
+#include "wx/iosfwrap.h"
-WXDLLEXPORT istream& operator>>(istream&, wxString&);
-WXDLLEXPORT ostream& operator<<(ostream&, const wxString&);
+WXDLLIMPEXP_BASE wxSTD istream& operator>>(wxSTD istream&, wxString&);
+WXDLLIMPEXP_BASE wxSTD ostream& operator<<(wxSTD ostream&, const wxString&);
#endif // wxSTD_STRING_COMPATIBILITY
projects / wxWidgets.git / blobdiff