1 ///////////////////////////////////////////////////////////////////////////////
3 // Purpose: wxString and wxArrayString classes
4 // Author: Vadim Zeitlin
8 // Copyright: (c) 1998 Vadim Zeitlin <zeitlin@dptmaths.ens-cachan.fr>
9 // Licence: wxWindows license
10 ///////////////////////////////////////////////////////////////////////////////
12 #ifndef _WX_WXSTRINGH__
13 #define _WX_WXSTRINGH__
16 #pragma interface "string.h"
30 #include <strings.h> // for strcasecmp()
36 #ifdef WXSTRING_IS_WXOBJECT
37 #include "wx/object.h"
42 #include "wx/wxchar.h"
43 #include "wx/buffer.h"
46 Efficient string class [more or less] compatible with MFC CString,
47 wxWindows version 1 wxString and std::string and some handy functions
48 missing from string.h.
51 // ---------------------------------------------------------------------------
53 // ---------------------------------------------------------------------------
55 // compile the std::string compatibility functions if defined
56 #define wxSTD_STRING_COMPATIBILITY
58 // define to derive wxString from wxObject
59 #ifdef WXSTRING_IS_WXOBJECT
60 #undef WXSTRING_IS_WXOBJECT
63 // maximum possible length for a string means "take all string" everywhere
64 // (as sizeof(StringData) is unknown here we substract 100)
65 const unsigned int wxSTRING_MAXLEN
= UINT_MAX
- 100;
68 #define WXSTRINGCAST (wxChar *)(const wxChar *)
69 #define MBSTRINGCAST (char *)(const char *)
70 #define WCSTRINGCAST (wchar_t *)(const wchar_t *)
72 // implementation only
73 #define ASSERT_VALID_INDEX(i) wxASSERT( (unsigned)(i) <= Len() )
75 // ---------------------------------------------------------------------------
76 // Global functions complementing standard C string library replacements for
77 // strlen() and portable strcasecmp()
78 //---------------------------------------------------------------------------
79 // USE wx* FUNCTIONS IN wx/wxchar.h INSTEAD - THIS IS ONLY FOR BINARY COMPATIBILITY
81 // checks whether the passed in pointer is NULL and if the string is empty
82 inline bool WXDLLEXPORT
IsEmpty(const char *p
) { return (!p
|| !*p
); }
84 // safe version of strlen() (returns 0 if passed NULL pointer)
85 inline size_t WXDLLEXPORT
Strlen(const char *psz
)
86 { return psz
? strlen(psz
) : 0; }
88 // portable strcasecmp/_stricmp
89 inline int WXDLLEXPORT
Stricmp(const char *psz1
, const char *psz2
)
91 #if defined(__VISUALC__) || ( defined(__MWERKS__) && defined(__INTEL__) )
92 return _stricmp(psz1
, psz2
);
94 return _stricmp(psz1
, psz2
);
95 #elif defined(__SALFORDC__)
96 return stricmp(psz1
, psz2
);
97 #elif defined(__BORLANDC__)
98 return stricmp(psz1
, psz2
);
99 #elif defined(__WATCOMC__)
100 return stricmp(psz1
, psz2
);
101 #elif defined(__UNIX__) || defined(__GNUWIN32__)
102 return strcasecmp(psz1
, psz2
);
103 #elif defined(__MWERKS__) && !defined(__INTEL__)
104 register char c1
, c2
;
106 c1
= tolower(*psz1
++);
107 c2
= tolower(*psz2
++);
108 } while ( c1
&& (c1
== c2
) );
112 // almost all compilers/libraries provide this function (unfortunately under
113 // different names), that's why we don't implement our own which will surely
114 // be more efficient than this code (uncomment to use):
116 register char c1, c2;
118 c1 = tolower(*psz1++);
119 c2 = tolower(*psz2++);
120 } while ( c1 && (c1 == c2) );
125 #error "Please define string case-insensitive compare for your OS/compiler"
126 #endif // OS/compiler
129 // ----------------------------------------------------------------------------
131 // ----------------------------------------------------------------------------
133 WXDLLEXPORT_DATA(extern const wxChar
*) wxEmptyString
;
135 // global pointer to empty string
136 WXDLLEXPORT_DATA(extern const wxChar
*) g_szNul
;
138 // return an empty wxString
139 class WXDLLEXPORT wxString
; // not yet defined
140 inline const wxString
& wxGetEmptyString() { return *(wxString
*)&g_szNul
; }
142 // ---------------------------------------------------------------------------
143 // string data prepended with some housekeeping info (used by wxString class),
144 // is never used directly (but had to be put here to allow inlining)
145 // ---------------------------------------------------------------------------
146 struct WXDLLEXPORT wxStringData
148 int nRefs
; // reference count
149 size_t nDataLength
, // actual string length
150 nAllocLength
; // allocated memory size
152 // mimics declaration 'wxChar data[nAllocLength]'
153 wxChar
* data() const { return (wxChar
*)(this + 1); }
155 // empty string has a special ref count so it's never deleted
156 bool IsEmpty() const { return (nRefs
== -1); }
157 bool IsShared() const { return (nRefs
> 1); }
160 void Lock() { if ( !IsEmpty() ) nRefs
++; }
161 void Unlock() { if ( !IsEmpty() && --nRefs
== 0) free(this); }
163 // if we had taken control over string memory (GetWriteBuf), it's
164 // intentionally put in invalid state
165 void Validate(bool b
) { nRefs
= (b
? 1 : 0); }
166 bool IsValid() const { return (nRefs
!= 0); }
169 // ---------------------------------------------------------------------------
170 // types of multibyte<->Unicode conversions
171 // ---------------------------------------------------------------------------
172 class WXDLLEXPORT wxMBConv
175 virtual size_t MB2WC(wchar_t *buf
, const char *psz
, size_t n
) const;
176 virtual size_t WC2MB(char *buf
, const wchar_t *psz
, size_t n
) const;
177 const wxWCharBuffer
cMB2WC(const char *psz
) const
179 size_t nLen
= MB2WC((wchar_t *) NULL
, psz
, 0);
180 wxWCharBuffer
buf(nLen
);
181 MB2WC(WCSTRINGCAST buf
, psz
, nLen
);
184 const wxCharBuffer
cWC2MB(const wchar_t *psz
) const
186 size_t nLen
= WC2MB((char *) NULL
, psz
, 0);
187 wxCharBuffer
buf(nLen
);
188 WC2MB(MBSTRINGCAST buf
, psz
, nLen
);
192 const wxWCharBuffer
cMB2WX(const char *psz
) const { return cMB2WC(psz
); }
193 const wxCharBuffer
cWX2MB(const wchar_t *psz
) const { return cWC2MB(psz
); }
194 const wchar_t* cWC2WX(const wchar_t *psz
) const { return psz
; }
195 const wchar_t* cMB2WC(const wchar_t *psz
) const { return psz
; }
197 const char* cMB2WX(const char *psz
) const { return psz
; }
198 const char* cWX2MB(const char *psz
) const { return psz
; }
199 const wxCharBuffer
cWC2WX(const wchar_t *psz
) const { return cWC2MB(psz
); }
200 const wxWCharBuffer
cWX2WC(const char *psz
) const { return cMB2WC(psz
); }
203 WXDLLEXPORT_DATA(extern wxMBConv
) wxConv_libc
;
205 #define wxANOTHER_MBCONV(type) \
206 class type : public wxMBConv { \
208 virtual size_t MB2WC(wchar_t *buf, const char *psz, size_t n) const; \
209 virtual size_t WC2MB(char *buf, const wchar_t *psz, size_t n) const; \
212 WXDLLEXPORT_DATA(extern wxANOTHER_MBCONV(wxMBConv_file
)) wxConv_file
;
213 WXDLLEXPORT_DATA(extern wxANOTHER_MBCONV(wxMBConv_UTF7
)) wxConv_UTF7
;
214 WXDLLEXPORT_DATA(extern wxANOTHER_MBCONV(wxMBConv_UTF8
)) wxConv_UTF8
;
215 #if defined(__WXGTK__) && (GTK_MINOR_VERSION > 0)
216 WXDLLEXPORT_DATA(extern wxANOTHER_MBCONV(wxMBConv_gdk
)) wxConv_gdk
;
219 class wxCharacterSet
;
220 class WXDLLEXPORT wxCSConv
: public wxMBConv
223 wxCharacterSet
*cset
;
225 wxCSConv(const wxChar
*charset
);
226 virtual ~wxCSConv(void);
227 virtual size_t MB2WC(wchar_t *buf
, const char *psz
, size_t n
) const;
228 virtual size_t WC2MB(char *buf
, const wchar_t *psz
, size_t n
) const;
231 WXDLLEXPORT_DATA(extern wxCSConv
) wxConv_local
;
233 WXDLLEXPORT_DATA(extern wxMBConv
*) wxConv_current
;
235 // filenames are multibyte on Unix and probably widechar on Windows?
243 #define wxFNCONV(name) wxConv_file.cWX2MB(name)
244 #define FNSTRINGCAST MBSTRINGCAST
246 #define wxFNCONV(name) name
247 #define FNSTRINGCAST WXSTRINGCAST
250 // ---------------------------------------------------------------------------
251 // This is (yet another one) String class for C++ programmers. It doesn't use
252 // any of "advanced" C++ features (i.e. templates, exceptions, namespaces...)
253 // thus you should be able to compile it with practicaly any C++ compiler.
254 // This class uses copy-on-write technique, i.e. identical strings share the
255 // same memory as long as neither of them is changed.
257 // This class aims to be as compatible as possible with the new standard
258 // std::string class, but adds some additional functions and should be at
259 // least as efficient than the standard implementation.
261 // Performance note: it's more efficient to write functions which take "const
262 // String&" arguments than "const char *" if you assign the argument to
265 // It was compiled and tested under Win32, Linux (libc 5 & 6), Solaris 5.5.
268 // - ressource support (string tables in ressources)
269 // - more wide character (UNICODE) support
270 // - regular expressions support
271 // ---------------------------------------------------------------------------
273 #ifdef WXSTRING_IS_WXOBJECT
274 class WXDLLEXPORT wxString
: public wxObject
276 DECLARE_DYNAMIC_CLASS(wxString
)
277 #else //WXSTRING_IS_WXOBJECT
278 class WXDLLEXPORT wxString
280 #endif //WXSTRING_IS_WXOBJECT
282 friend class WXDLLEXPORT wxArrayString
;
284 // NB: special care was taken in arranging the member functions in such order
285 // that all inline functions can be effectively inlined, verify that all
286 // performace critical functions are still inlined if you change order!
288 // points to data preceded by wxStringData structure with ref count info
291 // accessor to string data
292 wxStringData
* GetStringData() const { return (wxStringData
*)m_pchData
- 1; }
294 // string (re)initialization functions
295 // initializes the string to the empty value (must be called only from
296 // ctors, use Reinit() otherwise)
297 void Init() { m_pchData
= (wxChar
*)g_szNul
; }
298 // initializaes the string with (a part of) C-string
299 void InitWith(const wxChar
*psz
, size_t nPos
= 0, size_t nLen
= wxSTRING_MAXLEN
);
300 // as Init, but also frees old data
301 void Reinit() { GetStringData()->Unlock(); Init(); }
304 // allocates memory for string of lenght nLen
305 void AllocBuffer(size_t nLen
);
306 // copies data to another string
307 void AllocCopy(wxString
&, int, int) const;
308 // effectively copies data to string
309 void AssignCopy(size_t, const wxChar
*);
311 // append a (sub)string
312 void ConcatSelf(int nLen
, const wxChar
*src
);
314 // functions called before writing to the string: they copy it if there
315 // are other references to our data (should be the only owner when writing)
316 void CopyBeforeWrite();
317 void AllocBeforeWrite(size_t);
319 // this method is not implemented - there is _no_ conversion from int to
320 // string, you're doing something wrong if the compiler wants to call it!
322 // try `s << i' or `s.Printf("%d", i)' instead
327 // constructors and destructor
328 // ctor for an empty string
329 wxString() { Init(); }
331 wxString(const wxString
& stringSrc
)
333 wxASSERT( stringSrc
.GetStringData()->IsValid() );
335 if ( stringSrc
.IsEmpty() ) {
336 // nothing to do for an empty string
340 m_pchData
= stringSrc
.m_pchData
; // share same data
341 GetStringData()->Lock(); // => one more copy
344 // string containing nRepeat copies of ch
345 wxString(wxChar ch
, size_t nRepeat
= 1);
346 // ctor takes first nLength characters from C string
347 // (default value of wxSTRING_MAXLEN means take all the string)
348 wxString(const wxChar
*psz
, size_t nLength
= wxSTRING_MAXLEN
)
349 { InitWith(psz
, 0, nLength
); }
351 // from multibyte string
352 // (NB: nLength is right now number of Unicode characters, not
353 // characters in psz! So try not to use it yet!)
354 wxString(const char *psz
, wxMBConv
& conv
= wxConv_libc
, size_t nLength
= wxSTRING_MAXLEN
);
355 // from wxWCharBuffer (i.e. return from wxGetString)
356 wxString(const wxWCharBuffer
& psz
)
357 { InitWith(psz
, 0, wxSTRING_MAXLEN
); }
359 // from C string (for compilers using unsigned char)
360 wxString(const unsigned char* psz
, size_t nLength
= wxSTRING_MAXLEN
)
361 { InitWith((const char*)psz
, 0, nLength
); }
362 // from multibyte string
363 wxString(const char *psz
, wxMBConv
& WXUNUSED(conv
), size_t nLength
= wxSTRING_MAXLEN
)
364 { InitWith(psz
, 0, nLength
); }
365 // from wide (Unicode) string
366 wxString(const wchar_t *pwz
);
368 wxString(const wxCharBuffer
& psz
)
369 { InitWith(psz
, 0, wxSTRING_MAXLEN
); }
371 // dtor is not virtual, this class must not be inherited from!
372 ~wxString() { GetStringData()->Unlock(); }
374 // generic attributes & operations
375 // as standard strlen()
376 size_t Len() const { return GetStringData()->nDataLength
; }
377 // string contains any characters?
378 bool IsEmpty() const { return Len() == 0; }
379 // empty string is "FALSE", so !str will return TRUE
380 bool operator!() const { return IsEmpty(); }
381 // empty string contents
388 wxASSERT( GetStringData()->nDataLength
== 0 );
390 // empty the string and free memory
393 if ( !GetStringData()->IsEmpty() )
396 wxASSERT( GetStringData()->nDataLength
== 0 ); // should be empty
397 wxASSERT( GetStringData()->nAllocLength
== 0 ); // and not own any memory
402 bool IsAscii() const;
404 bool IsNumber() const;
408 // data access (all indexes are 0 based)
410 wxChar
GetChar(size_t n
) const
411 { ASSERT_VALID_INDEX( n
); return m_pchData
[n
]; }
413 wxChar
& GetWritableChar(size_t n
)
414 { ASSERT_VALID_INDEX( n
); CopyBeforeWrite(); return m_pchData
[n
]; }
416 void SetChar(size_t n
, wxChar ch
)
417 { ASSERT_VALID_INDEX( n
); CopyBeforeWrite(); m_pchData
[n
] = ch
; }
419 // get last character
421 { wxASSERT( !IsEmpty() ); return m_pchData
[Len() - 1]; }
422 // get writable last character
424 { wxASSERT( !IsEmpty() ); CopyBeforeWrite(); return m_pchData
[Len()-1]; }
426 // under Unix it is tested with configure, assume it works on other
427 // platforms (there might be overloading problems if size_t and int are
429 #if !defined(__UNIX__) || wxUSE_SIZE_T_STRING_OPERATOR
430 // operator version of GetChar
431 wxChar
operator[](size_t n
) const
432 { ASSERT_VALID_INDEX( n
); return m_pchData
[n
]; }
435 // operator version of GetChar
436 wxChar
operator[](int n
) const
437 { ASSERT_VALID_INDEX( n
); return m_pchData
[n
]; }
438 // operator version of GetWritableChar
439 wxChar
& operator[](size_t n
)
440 { ASSERT_VALID_INDEX( n
); CopyBeforeWrite(); return m_pchData
[n
]; }
442 // implicit conversion to C string
443 operator const wxChar
*() const { return m_pchData
; }
444 // explicit conversion to C string (use this with printf()!)
445 const wxChar
* c_str() const { return m_pchData
; }
447 const wxChar
* GetData() const { return m_pchData
; }
449 const wxCharBuffer
mb_str(wxMBConv
& conv
= wxConv_libc
) const { return conv
.cWC2MB(m_pchData
); }
450 const wxChar
* wc_str(wxMBConv
& WXUNUSED(conv
) = wxConv_libc
) const { return m_pchData
; }
452 const wxCharBuffer
fn_str() const { return mb_str(wxConv_file
); }
454 const wxChar
* fn_str() const { return m_pchData
; }
457 const wxChar
* mb_str(wxMBConv
& WXUNUSED(conv
) = wxConv_libc
) const { return m_pchData
; }
458 const wxWCharBuffer
wc_str(wxMBConv
& conv
) const { return conv
.cMB2WC(m_pchData
); }
459 const wxChar
* fn_str() const { return m_pchData
; }
462 const wxWX2MBbuf
mbc_str() const { return mb_str(*wxConv_current
); }
464 // overloaded assignment
465 // from another wxString
466 wxString
& operator=(const wxString
& stringSrc
);
468 wxString
& operator=(wxChar ch
);
470 wxString
& operator=(const wxChar
*psz
);
472 // from wxWCharBuffer
473 wxString
& operator=(const wxWCharBuffer
& psz
) { return operator=((const wchar_t *)psz
); }
475 // from another kind of C string
476 wxString
& operator=(const unsigned char* psz
);
477 // from a wide string
478 wxString
& operator=(const wchar_t *pwz
);
480 wxString
& operator=(const wxCharBuffer
& psz
) { return operator=((const char *)psz
); }
483 // string concatenation
484 // in place concatenation
486 Concatenate and return the result. Note that the left to right
487 associativity of << allows to write things like "str << str1 << str2
488 << ..." (unlike with +=)
491 wxString
& operator<<(const wxString
& s
)
493 wxASSERT( s
.GetStringData()->IsValid() );
495 ConcatSelf(s
.Len(), s
);
498 // string += C string
499 wxString
& operator<<(const wxChar
*psz
)
500 { ConcatSelf(wxStrlen(psz
), psz
); return *this; }
502 wxString
& operator<<(wxChar ch
) { ConcatSelf(1, &ch
); return *this; }
505 void operator+=(const wxString
& s
) { (void)operator<<(s
); }
506 // string += C string
507 void operator+=(const wxChar
*psz
) { (void)operator<<(psz
); }
509 void operator+=(wxChar ch
) { (void)operator<<(ch
); }
511 // string += buffer (i.e. from wxGetString)
513 wxString
& operator<<(const wxWCharBuffer
& s
) { (void)operator<<((const wchar_t *)s
); return *this; }
514 void operator+=(const wxWCharBuffer
& s
) { (void)operator<<((const wchar_t *)s
); }
516 wxString
& operator<<(const wxCharBuffer
& s
) { (void)operator<<((const char *)s
); return *this; }
517 void operator+=(const wxCharBuffer
& s
) { (void)operator<<((const char *)s
); }
520 // string += C string
521 wxString
& Append(const wxChar
* psz
)
522 { ConcatSelf(wxStrlen(psz
), psz
); return *this; }
523 // append count copies of given character
524 wxString
& Append(wxChar ch
, size_t count
= 1u)
525 { wxString
str(ch
, count
); return *this << str
; }
527 // prepend a string, return the string itself
528 wxString
& Prepend(const wxString
& str
)
529 { *this = str
+ *this; return *this; }
531 // non-destructive concatenation
533 friend wxString WXDLLEXPORT
operator+(const wxString
& string1
, const wxString
& string2
);
535 friend wxString WXDLLEXPORT
operator+(const wxString
& string
, wxChar ch
);
537 friend wxString WXDLLEXPORT
operator+(wxChar ch
, const wxString
& string
);
539 friend wxString WXDLLEXPORT
operator+(const wxString
& string
, const wxChar
*psz
);
541 friend wxString WXDLLEXPORT
operator+(const wxChar
*psz
, const wxString
& string
);
543 // stream-like functions
544 // insert an int into string
545 wxString
& operator<<(int i
);
546 // insert a float into string
547 wxString
& operator<<(float f
);
548 // insert a double into string
549 wxString
& operator<<(double d
);
552 // case-sensitive comparison (returns a value < 0, = 0 or > 0)
553 int Cmp(const wxChar
*psz
) const { return wxStrcmp(c_str(), psz
); }
554 // same as Cmp() but not case-sensitive
555 int CmpNoCase(const wxChar
*psz
) const { return wxStricmp(c_str(), psz
); }
556 // test for the string equality, either considering case or not
557 // (if compareWithCase then the case matters)
558 bool IsSameAs(const wxChar
*psz
, bool compareWithCase
= TRUE
) const
559 { return (compareWithCase
? Cmp(psz
) : CmpNoCase(psz
)) == 0; }
561 // simple sub-string extraction
562 // return substring starting at nFirst of length nCount (or till the end
563 // if nCount = default value)
564 wxString
Mid(size_t nFirst
, size_t nCount
= wxSTRING_MAXLEN
) const;
566 // operator version of Mid()
567 wxString
operator()(size_t start
, size_t len
) const
568 { return Mid(start
, len
); }
570 // get first nCount characters
571 wxString
Left(size_t nCount
) const;
572 // get last nCount characters
573 wxString
Right(size_t nCount
) const;
574 // get all characters before the first occurence of ch
575 // (returns the whole string if ch not found)
576 wxString
BeforeFirst(wxChar ch
) const;
577 // get all characters before the last occurence of ch
578 // (returns empty string if ch not found)
579 wxString
BeforeLast(wxChar ch
) const;
580 // get all characters after the first occurence of ch
581 // (returns empty string if ch not found)
582 wxString
AfterFirst(wxChar ch
) const;
583 // get all characters after the last occurence of ch
584 // (returns the whole string if ch not found)
585 wxString
AfterLast(wxChar ch
) const;
587 // for compatibility only, use more explicitly named functions above
588 wxString
Before(wxChar ch
) const { return BeforeLast(ch
); }
589 wxString
After(wxChar ch
) const { return AfterFirst(ch
); }
592 // convert to upper case in place, return the string itself
593 wxString
& MakeUpper();
594 // convert to upper case, return the copy of the string
595 // Here's something to remember: BC++ doesn't like returns in inlines.
596 wxString
Upper() const ;
597 // convert to lower case in place, return the string itself
598 wxString
& MakeLower();
599 // convert to lower case, return the copy of the string
600 wxString
Lower() const ;
602 // trimming/padding whitespace (either side) and truncating
603 // remove spaces from left or from right (default) side
604 wxString
& Trim(bool bFromRight
= TRUE
);
605 // add nCount copies chPad in the beginning or at the end (default)
606 wxString
& Pad(size_t nCount
, wxChar chPad
= _T(' '), bool bFromRight
= TRUE
);
607 // truncate string to given length
608 wxString
& Truncate(size_t uiLen
);
610 // searching and replacing
611 // searching (return starting index, or -1 if not found)
612 int Find(wxChar ch
, bool bFromEnd
= FALSE
) const; // like strchr/strrchr
613 // searching (return starting index, or -1 if not found)
614 int Find(const wxChar
*pszSub
) const; // like strstr
615 // replace first (or all of bReplaceAll) occurences of substring with
616 // another string, returns the number of replacements made
617 size_t Replace(const wxChar
*szOld
,
619 bool bReplaceAll
= TRUE
);
621 // check if the string contents matches a mask containing '*' and '?'
622 bool Matches(const wxChar
*szMask
) const;
624 // formated input/output
625 // as sprintf(), returns the number of characters written or < 0 on error
626 int Printf(const wxChar
*pszFormat
, ...);
627 // as vprintf(), returns the number of characters written or < 0 on error
628 int PrintfV(const wxChar
* pszFormat
, va_list argptr
);
630 // raw access to string memory
631 // ensure that string has space for at least nLen characters
632 // only works if the data of this string is not shared
633 void Alloc(size_t nLen
);
634 // minimize the string's memory
635 // only works if the data of this string is not shared
637 // get writable buffer of at least nLen bytes. Unget() *must* be called
638 // a.s.a.p. to put string back in a reasonable state!
639 wxChar
*GetWriteBuf(size_t nLen
);
640 // call this immediately after GetWriteBuf() has been used
641 void UngetWriteBuf();
643 // wxWindows version 1 compatibility functions
646 wxString
SubString(size_t from
, size_t to
) const
647 { return Mid(from
, (to
- from
+ 1)); }
648 // values for second parameter of CompareTo function
649 enum caseCompare
{exact
, ignoreCase
};
650 // values for first parameter of Strip function
651 enum stripType
{leading
= 0x1, trailing
= 0x2, both
= 0x3};
654 int sprintf(const wxChar
*pszFormat
, ...);
657 inline int CompareTo(const wxChar
* psz
, caseCompare cmp
= exact
) const
658 { return cmp
== exact
? Cmp(psz
) : CmpNoCase(psz
); }
661 size_t Length() const { return Len(); }
662 // Count the number of characters
663 int Freq(wxChar ch
) const;
665 void LowerCase() { MakeLower(); }
667 void UpperCase() { MakeUpper(); }
668 // use Trim except that it doesn't change this string
669 wxString
Strip(stripType w
= trailing
) const;
671 // use Find (more general variants not yet supported)
672 size_t Index(const wxChar
* psz
) const { return Find(psz
); }
673 size_t Index(wxChar ch
) const { return Find(ch
); }
675 wxString
& Remove(size_t pos
) { return Truncate(pos
); }
676 wxString
& RemoveLast() { return Truncate(Len() - 1); }
678 wxString
& Remove(size_t nStart
, size_t nLen
) { return erase( nStart
, nLen
); }
681 int First( const wxChar ch
) const { return Find(ch
); }
682 int First( const wxChar
* psz
) const { return Find(psz
); }
683 int First( const wxString
&str
) const { return Find(str
); }
684 int Last( const wxChar ch
) const { return Find(ch
, TRUE
); }
685 bool Contains(const wxString
& str
) const { return Find(str
) != -1; }
688 bool IsNull() const { return IsEmpty(); }
690 #ifdef wxSTD_STRING_COMPATIBILITY
691 // std::string compatibility functions
693 // an 'invalid' value for string index
694 static const size_t npos
;
697 // take nLen chars starting at nPos
698 wxString(const wxString
& str
, size_t nPos
, size_t nLen
)
700 wxASSERT( str
.GetStringData()->IsValid() );
701 InitWith(str
.c_str(), nPos
, nLen
== npos
? 0 : nLen
);
703 // take all characters from pStart to pEnd
704 wxString(const void *pStart
, const void *pEnd
);
706 // lib.string.capacity
707 // return the length of the string
708 size_t size() const { return Len(); }
709 // return the length of the string
710 size_t length() const { return Len(); }
711 // return the maximum size of the string
712 size_t max_size() const { return wxSTRING_MAXLEN
; }
713 // resize the string, filling the space with c if c != 0
714 void resize(size_t nSize
, wxChar ch
= _T('\0'));
715 // delete the contents of the string
716 void clear() { Empty(); }
717 // returns true if the string is empty
718 bool empty() const { return IsEmpty(); }
721 // return the character at position n
722 wxChar
at(size_t n
) const { return GetChar(n
); }
723 // returns the writable character at position n
724 wxChar
& at(size_t n
) { return GetWritableChar(n
); }
726 // lib.string.modifiers
728 wxString
& append(const wxString
& str
)
729 { *this += str
; return *this; }
730 // append elements str[pos], ..., str[pos+n]
731 wxString
& append(const wxString
& str
, size_t pos
, size_t n
)
732 { ConcatSelf(n
, str
.c_str() + pos
); return *this; }
733 // append first n (or all if n == npos) characters of sz
734 wxString
& append(const wxChar
*sz
, size_t n
= npos
)
735 { ConcatSelf(n
== npos
? wxStrlen(sz
) : n
, sz
); return *this; }
737 // append n copies of ch
738 wxString
& append(size_t n
, wxChar ch
) { return Pad(n
, ch
); }
740 // same as `this_string = str'
741 wxString
& assign(const wxString
& str
) { return (*this) = str
; }
742 // same as ` = str[pos..pos + n]
743 wxString
& assign(const wxString
& str
, size_t pos
, size_t n
)
744 { return *this = wxString((const wxChar
*)str
+ pos
, n
); }
745 // same as `= first n (or all if n == npos) characters of sz'
746 wxString
& assign(const wxChar
*sz
, size_t n
= npos
)
747 { return *this = wxString(sz
, n
); }
748 // same as `= n copies of ch'
749 wxString
& assign(size_t n
, wxChar ch
)
750 { return *this = wxString(ch
, n
); }
752 // insert another string
753 wxString
& insert(size_t nPos
, const wxString
& str
);
754 // insert n chars of str starting at nStart (in str)
755 wxString
& insert(size_t nPos
, const wxString
& str
, size_t nStart
, size_t n
)
756 { return insert(nPos
, wxString((const wxChar
*)str
+ nStart
, n
)); }
758 // insert first n (or all if n == npos) characters of sz
759 wxString
& insert(size_t nPos
, const wxChar
*sz
, size_t n
= npos
)
760 { return insert(nPos
, wxString(sz
, n
)); }
761 // insert n copies of ch
762 wxString
& insert(size_t nPos
, size_t n
, wxChar ch
)
763 { return insert(nPos
, wxString(ch
, n
)); }
765 // delete characters from nStart to nStart + nLen
766 wxString
& erase(size_t nStart
= 0, size_t nLen
= npos
);
768 // replaces the substring of length nLen starting at nStart
769 wxString
& replace(size_t nStart
, size_t nLen
, const wxChar
* sz
);
770 // replaces the substring with nCount copies of ch
771 wxString
& replace(size_t nStart
, size_t nLen
, size_t nCount
, wxChar ch
);
772 // replaces a substring with another substring
773 wxString
& replace(size_t nStart
, size_t nLen
,
774 const wxString
& str
, size_t nStart2
, size_t nLen2
);
775 // replaces the substring with first nCount chars of sz
776 wxString
& replace(size_t nStart
, size_t nLen
,
777 const wxChar
* sz
, size_t nCount
);
780 void swap(wxString
& str
);
782 // All find() functions take the nStart argument which specifies the
783 // position to start the search on, the default value is 0. All functions
784 // return npos if there were no match.
787 size_t find(const wxString
& str
, size_t nStart
= 0) const;
789 // VC++ 1.5 can't cope with this syntax.
790 #if !defined(__VISUALC__) || defined(__WIN32__)
791 // find first n characters of sz
792 size_t find(const wxChar
* sz
, size_t nStart
= 0, size_t n
= npos
) const;
795 // Gives a duplicate symbol (presumably a case-insensitivity problem)
796 #if !defined(__BORLANDC__)
797 // find the first occurence of character ch after nStart
798 size_t find(wxChar ch
, size_t nStart
= 0) const;
800 // rfind() family is exactly like find() but works right to left
802 // as find, but from the end
803 size_t rfind(const wxString
& str
, size_t nStart
= npos
) const;
805 // VC++ 1.5 can't cope with this syntax.
806 #if !defined(__VISUALC__) || defined(__WIN32__)
807 // as find, but from the end
808 size_t rfind(const wxChar
* sz
, size_t nStart
= npos
,
809 size_t n
= npos
) const;
810 // as find, but from the end
811 size_t rfind(wxChar ch
, size_t nStart
= npos
) const;
814 // find first/last occurence of any character in the set
817 size_t find_first_of(const wxString
& str
, size_t nStart
= 0) const;
819 size_t find_first_of(const wxChar
* sz
, size_t nStart
= 0) const;
820 // same as find(char, size_t)
821 size_t find_first_of(wxChar c
, size_t nStart
= 0) const;
823 size_t find_last_of (const wxString
& str
, size_t nStart
= npos
) const;
825 size_t find_last_of (const wxChar
* s
, size_t nStart
= npos
) const;
826 // same as rfind(char, size_t)
827 size_t find_last_of (wxChar c
, size_t nStart
= npos
) const;
829 // find first/last occurence of any character not in the set
832 size_t find_first_not_of(const wxString
& str
, size_t nStart
= 0) const;
834 size_t find_first_not_of(const wxChar
* s
, size_t nStart
= 0) const;
836 size_t find_first_not_of(wxChar ch
, size_t nStart
= 0) const;
838 size_t find_last_not_of(const wxString
& str
, size_t nStart
=npos
) const;
840 size_t find_last_not_of(const wxChar
* s
, size_t nStart
= npos
) const;
842 size_t find_last_not_of(wxChar ch
, size_t nStart
= npos
) const;
844 // All compare functions return -1, 0 or 1 if the [sub]string is less,
845 // equal or greater than the compare() argument.
847 // just like strcmp()
848 int compare(const wxString
& str
) const { return Cmp(str
); }
849 // comparison with a substring
850 int compare(size_t nStart
, size_t nLen
, const wxString
& str
) const;
851 // comparison of 2 substrings
852 int compare(size_t nStart
, size_t nLen
,
853 const wxString
& str
, size_t nStart2
, size_t nLen2
) const;
854 // just like strcmp()
855 int compare(const wxChar
* sz
) const { return Cmp(sz
); }
856 // substring comparison with first nCount characters of sz
857 int compare(size_t nStart
, size_t nLen
,
858 const wxChar
* sz
, size_t nCount
= npos
) const;
860 // substring extraction
861 wxString
substr(size_t nStart
= 0, size_t nLen
= npos
) const;
862 #endif // wxSTD_STRING_COMPATIBILITY
865 // ----------------------------------------------------------------------------
866 // The string array uses it's knowledge of internal structure of the wxString
867 // class to optimize string storage. Normally, we would store pointers to
868 // string, but as wxString is, in fact, itself a pointer (sizeof(wxString) is
869 // sizeof(char *)) we store these pointers instead. The cast to "wxString *" is
870 // really all we need to turn such pointer into a string!
872 // Of course, it can be called a dirty hack, but we use twice less memory and
873 // this approach is also more speed efficient, so it's probably worth it.
875 // Usage notes: when a string is added/inserted, a new copy of it is created,
876 // so the original string may be safely deleted. When a string is retrieved
877 // from the array (operator[] or Item() method), a reference is returned.
878 // ----------------------------------------------------------------------------
879 class WXDLLEXPORT wxArrayString
882 // type of function used by wxArrayString::Sort()
883 typedef int (*CompareFunction
)(const wxString
& first
,
884 const wxString
& second
);
886 // constructors and destructor
890 wxArrayString(const wxArrayString
& array
);
891 // assignment operator
892 wxArrayString
& operator=(const wxArrayString
& src
);
893 // not virtual, this class should not be derived from
897 // empties the list, but doesn't release memory
899 // empties the list and releases memory
901 // preallocates memory for given number of items
902 void Alloc(size_t nCount
);
903 // minimzes the memory usage (by freeing all extra memory)
907 // number of elements in the array
908 size_t GetCount() const { return m_nCount
; }
910 bool IsEmpty() const { return m_nCount
== 0; }
911 // number of elements in the array (GetCount is preferred API)
912 size_t Count() const { return m_nCount
; }
914 // items access (range checking is done in debug version)
915 // get item at position uiIndex
916 wxString
& Item(size_t nIndex
) const
917 { wxASSERT( nIndex
< m_nCount
); return *(wxString
*)&(m_pItems
[nIndex
]); }
919 wxString
& operator[](size_t nIndex
) const { return Item(nIndex
); }
921 wxString
& Last() const { wxASSERT( !IsEmpty() ); return Item(Count() - 1); }
924 // Search the element in the array, starting from the beginning if
925 // bFromEnd is FALSE or from end otherwise. If bCase, comparison is case
926 // sensitive (default). Returns index of the first item matched or
928 int Index (const wxChar
*sz
, bool bCase
= TRUE
, bool bFromEnd
= FALSE
) const;
929 // add new element at the end
930 void Add(const wxString
& str
);
931 // add new element at given position
932 void Insert(const wxString
& str
, size_t uiIndex
);
933 // remove first item matching this value
934 void Remove(const wxChar
*sz
);
935 // remove item by index
936 void Remove(size_t nIndex
);
939 // sort array elements in alphabetical order (or reversed alphabetical
940 // order if reverseOrder parameter is TRUE)
941 void Sort(bool reverseOrder
= FALSE
);
942 // sort array elements using specified comparaison function
943 void Sort(CompareFunction compareFunction
);
946 void Grow(); // makes array bigger if needed
947 void Free(); // free the string stored
949 void DoSort(); // common part of all Sort() variants
951 size_t m_nSize
, // current size of the array
952 m_nCount
; // current number of elements
954 wxChar
**m_pItems
; // pointer to data
957 // ---------------------------------------------------------------------------
958 // wxString comparison functions: operator versions are always case sensitive
959 // ---------------------------------------------------------------------------
961 inline bool operator==(const wxString
& s1
, const wxString
& s2
) { return (s1
.Cmp(s2
) == 0); }
963 inline bool operator==(const wxString
& s1
, const wxChar
* s2
) { return (s1
.Cmp(s2
) == 0); }
965 inline bool operator==(const wxChar
* s1
, const wxString
& s2
) { return (s2
.Cmp(s1
) == 0); }
967 inline bool operator!=(const wxString
& s1
, const wxString
& s2
) { return (s1
.Cmp(s2
) != 0); }
969 inline bool operator!=(const wxString
& s1
, const wxChar
* s2
) { return (s1
.Cmp(s2
) != 0); }
971 inline bool operator!=(const wxChar
* s1
, const wxString
& s2
) { return (s2
.Cmp(s1
) != 0); }
973 inline bool operator< (const wxString
& s1
, const wxString
& s2
) { return (s1
.Cmp(s2
) < 0); }
975 inline bool operator< (const wxString
& s1
, const wxChar
* s2
) { return (s1
.Cmp(s2
) < 0); }
977 inline bool operator< (const wxChar
* s1
, const wxString
& s2
) { return (s2
.Cmp(s1
) > 0); }
979 inline bool operator> (const wxString
& s1
, const wxString
& s2
) { return (s1
.Cmp(s2
) > 0); }
981 inline bool operator> (const wxString
& s1
, const wxChar
* s2
) { return (s1
.Cmp(s2
) > 0); }
983 inline bool operator> (const wxChar
* s1
, const wxString
& s2
) { return (s2
.Cmp(s1
) < 0); }
985 inline bool operator<=(const wxString
& s1
, const wxString
& s2
) { return (s1
.Cmp(s2
) <= 0); }
987 inline bool operator<=(const wxString
& s1
, const wxChar
* s2
) { return (s1
.Cmp(s2
) <= 0); }
989 inline bool operator<=(const wxChar
* s1
, const wxString
& s2
) { return (s2
.Cmp(s1
) >= 0); }
991 inline bool operator>=(const wxString
& s1
, const wxString
& s2
) { return (s1
.Cmp(s2
) >= 0); }
993 inline bool operator>=(const wxString
& s1
, const wxChar
* s2
) { return (s1
.Cmp(s2
) >= 0); }
995 inline bool operator>=(const wxChar
* s1
, const wxString
& s2
) { return (s2
.Cmp(s1
) <= 0); }
997 wxString WXDLLEXPORT
operator+(const wxString
& string1
, const wxString
& string2
);
998 wxString WXDLLEXPORT
operator+(const wxString
& string
, wxChar ch
);
999 wxString WXDLLEXPORT
operator+(wxChar ch
, const wxString
& string
);
1000 wxString WXDLLEXPORT
operator+(const wxString
& string
, const wxChar
*psz
);
1001 wxString WXDLLEXPORT
operator+(const wxChar
*psz
, const wxString
& string
);
1003 // ---------------------------------------------------------------------------
1004 // Implementation only from here until the end of file
1005 // ---------------------------------------------------------------------------
1007 #ifdef wxSTD_STRING_COMPATIBILITY
1009 #include "wx/ioswrap.h"
1011 WXDLLEXPORT istream
& operator>>(istream
& is
, wxString
& str
);
1013 #endif // wxSTD_STRING_COMPATIBILITY
1015 #endif // _WX_WXSTRINGH__