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Removed the SaveBG hack. The real incompatibility is that the MemoryDC
[wxWidgets.git] / include / wx / string.h
1 ///////////////////////////////////////////////////////////////////////////////
2 // Name: wx/string.h
3 // Purpose: wxString and wxArrayString classes
4 // Author: Vadim Zeitlin
5 // Modified by:
6 // Created: 29/01/98
7 // RCS-ID: $Id$
8 // Copyright: (c) 1998 Vadim Zeitlin <zeitlin@dptmaths.ens-cachan.fr>
9 // Licence: wxWindows licence
10 ///////////////////////////////////////////////////////////////////////////////
11
12 /*
13 Efficient string class [more or less] compatible with MFC CString,
14 wxWindows version 1 wxString and std::string and some handy functions
15 missing from string.h.
16 */
17
18 #ifndef _WX_WXSTRINGH__
19 #define _WX_WXSTRINGH__
20
21 #if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
22 #pragma interface "string.h"
23 #endif
24
25 // ----------------------------------------------------------------------------
26 // headers
27 // ----------------------------------------------------------------------------
28
29 #include "wx/defs.h" // everybody should include this
30
31 #if defined(__WXMAC__) || defined(__VISAGECPP__)
32 #include <ctype.h>
33 #endif
34
35 #if defined(__VISAGECPP__) && __IBMCPP__ >= 400
36 // problem in VACPP V4 with including stdlib.h multiple times
37 // strconv includes it anyway
38 # include <stdio.h>
39 # include <string.h>
40 # include <stdarg.h>
41 # include <limits.h>
42 #else
43 # include <string.h>
44 # include <stdio.h>
45 # include <stdarg.h>
46 # include <limits.h>
47 # include <stdlib.h>
48 #endif
49
50 #ifdef HAVE_STRCASECMP_IN_STRINGS_H
51 #include <strings.h> // for strcasecmp()
52 #endif // HAVE_STRCASECMP_IN_STRINGS_H
53
54 #include "wx/wxchar.h" // for wxChar
55 #include "wx/buffer.h" // for wxCharBuffer
56 #include "wx/strconv.h" // for wxConvertXXX() macros and wxMBConv classes
57
58 // ---------------------------------------------------------------------------
59 // macros
60 // ---------------------------------------------------------------------------
61
62 // casts [unfortunately!] needed to call some broken functions which require
63 // "char *" instead of "const char *"
64 #define WXSTRINGCAST (wxChar *)(const wxChar *)
65 #define wxCSTRINGCAST (wxChar *)(const wxChar *)
66 #define wxMBSTRINGCAST (char *)(const char *)
67 #define wxWCSTRINGCAST (wchar_t *)(const wchar_t *)
68
69 // implementation only
70 #define wxASSERT_VALID_INDEX(i) \
71 wxASSERT_MSG( (size_t)(i) <= length(), _T("invalid index in wxString") )
72
73 // ----------------------------------------------------------------------------
74 // constants
75 // ----------------------------------------------------------------------------
76
77 #if defined(__VISAGECPP__) && __IBMCPP__ >= 400
78 // must define this static for VA or else you get multiply defined symbols everywhere
79 extern const unsigned int wxSTRING_MAXLEN;
80
81 #else
82 // maximum possible length for a string means "take all string" everywhere
83 // (as sizeof(StringData) is unknown here, we substract 100)
84 const unsigned int wxSTRING_MAXLEN = UINT_MAX - 100;
85
86 #endif
87
88 // ----------------------------------------------------------------------------
89 // global data
90 // ----------------------------------------------------------------------------
91
92 // global pointer to empty string
93 extern WXDLLIMPEXP_DATA_BASE(const wxChar*) wxEmptyString;
94
95 // ---------------------------------------------------------------------------
96 // global functions complementing standard C string library replacements for
97 // strlen() and portable strcasecmp()
98 //---------------------------------------------------------------------------
99
100 // Use wxXXX() functions from wxchar.h instead! These functions are for
101 // backwards compatibility only.
102
103 // checks whether the passed in pointer is NULL and if the string is empty
104 inline bool IsEmpty(const char *p) { return (!p || !*p); }
105
106 // safe version of strlen() (returns 0 if passed NULL pointer)
107 inline size_t Strlen(const char *psz)
108 { return psz ? strlen(psz) : 0; }
109
110 // portable strcasecmp/_stricmp
111 inline int Stricmp(const char *psz1, const char *psz2)
112 {
113 #if defined(__VISUALC__) && defined(__WXWINCE__)
114 register char c1, c2;
115 do {
116 c1 = tolower(*psz1++);
117 c2 = tolower(*psz2++);
118 } while ( c1 && (c1 == c2) );
119
120 return c1 - c2;
121 #elif defined(__VISUALC__) || ( defined(__MWERKS__) && defined(__INTEL__) )
122 return _stricmp(psz1, psz2);
123 #elif defined(__SC__)
124 return _stricmp(psz1, psz2);
125 #elif defined(__SALFORDC__)
126 return stricmp(psz1, psz2);
127 #elif defined(__BORLANDC__)
128 return stricmp(psz1, psz2);
129 #elif defined(__WATCOMC__)
130 return stricmp(psz1, psz2);
131 #elif defined(__DJGPP__)
132 return stricmp(psz1, psz2);
133 #elif defined(__EMX__)
134 return stricmp(psz1, psz2);
135 #elif defined(__WXPM__)
136 return stricmp(psz1, psz2);
137 #elif defined(HAVE_STRCASECMP_IN_STRING_H) || \
138 defined(HAVE_STRCASECMP_IN_STRINGS_H) || \
139 defined(__GNUWIN32__)
140 return strcasecmp(psz1, psz2);
141 #elif defined(__MWERKS__) && !defined(__INTEL__)
142 register char c1, c2;
143 do {
144 c1 = tolower(*psz1++);
145 c2 = tolower(*psz2++);
146 } while ( c1 && (c1 == c2) );
147
148 return c1 - c2;
149 #else
150 // almost all compilers/libraries provide this function (unfortunately under
151 // different names), that's why we don't implement our own which will surely
152 // be more efficient than this code (uncomment to use):
153 /*
154 register char c1, c2;
155 do {
156 c1 = tolower(*psz1++);
157 c2 = tolower(*psz2++);
158 } while ( c1 && (c1 == c2) );
159
160 return c1 - c2;
161 */
162
163 #error "Please define string case-insensitive compare for your OS/compiler"
164 #endif // OS/compiler
165 }
166
167 // return an empty wxString
168 class WXDLLIMPEXP_BASE wxString; // not yet defined
169 inline const wxString& wxGetEmptyString() { return *(wxString *)&wxEmptyString; }
170
171 #if wxUSE_STL
172
173 #include "wx/beforestd.h"
174 #include <string>
175 #include "wx/afterstd.h"
176
177 #if wxUSE_UNICODE
178 #ifdef HAVE_STD_WSTRING
179 typedef std::wstring wxStringBase;
180 #else
181 typedef std::basic_string<wxChar> wxStringBase;
182 #endif
183 #else
184 typedef std::string wxStringBase;
185 #endif
186
187 #if (defined(__GNUG__) && (__GNUG__ < 3)) || \
188 (defined(_MSC_VER) && (_MSC_VER <= 1200))
189 #define wxSTRING_BASE_HASNT_CLEAR
190 #endif
191
192 #else // if !wxUSE_STL
193
194 #ifndef HAVE_STD_STRING_COMPARE
195 #define HAVE_STD_STRING_COMPARE
196 #endif
197
198 // ---------------------------------------------------------------------------
199 // string data prepended with some housekeeping info (used by wxString class),
200 // is never used directly (but had to be put here to allow inlining)
201 // ---------------------------------------------------------------------------
202
203 struct WXDLLIMPEXP_BASE wxStringData
204 {
205 int nRefs; // reference count
206 size_t nDataLength, // actual string length
207 nAllocLength; // allocated memory size
208
209 // mimics declaration 'wxChar data[nAllocLength]'
210 wxChar* data() const { return (wxChar*)(this + 1); }
211
212 // empty string has a special ref count so it's never deleted
213 bool IsEmpty() const { return (nRefs == -1); }
214 bool IsShared() const { return (nRefs > 1); }
215
216 // lock/unlock
217 void Lock() { if ( !IsEmpty() ) nRefs++; }
218
219 // VC++ will refuse to inline Unlock but profiling shows that it is wrong
220 #if defined(__VISUALC__) && (__VISUALC__ >= 1200)
221 __forceinline
222 #endif
223 // VC++ free must take place in same DLL as allocation when using non dll
224 // run-time library (e.g. Multithreaded instead of Multithreaded DLL)
225 #if defined(__VISUALC__) && defined(_MT) && !defined(_DLL)
226 void Unlock() { if ( !IsEmpty() && --nRefs == 0) Free(); }
227 // we must not inline deallocation since allocation is not inlined
228 void Free();
229 #else
230 void Unlock() { if ( !IsEmpty() && --nRefs == 0) free(this); }
231 #endif
232
233 // if we had taken control over string memory (GetWriteBuf), it's
234 // intentionally put in invalid state
235 void Validate(bool b) { nRefs = (b ? 1 : 0); }
236 bool IsValid() const { return (nRefs != 0); }
237 };
238
239 class WXDLLIMPEXP_BASE wxStringBase
240 {
241 #if !wxUSE_STL
242 friend class WXDLLIMPEXP_BASE wxArrayString;
243 #endif
244 public :
245 // an 'invalid' value for string index, moved to this place due to a CW bug
246 static const size_t npos;
247 protected:
248 // points to data preceded by wxStringData structure with ref count info
249 wxChar *m_pchData;
250
251 // accessor to string data
252 wxStringData* GetStringData() const { return (wxStringData*)m_pchData - 1; }
253
254 // string (re)initialization functions
255 // initializes the string to the empty value (must be called only from
256 // ctors, use Reinit() otherwise)
257 void Init() { m_pchData = (wxChar *)wxEmptyString; }
258 // initializaes the string with (a part of) C-string
259 void InitWith(const wxChar *psz, size_t nPos = 0, size_t nLen = npos);
260 // as Init, but also frees old data
261 void Reinit() { GetStringData()->Unlock(); Init(); }
262
263 // memory allocation
264 // allocates memory for string of length nLen
265 bool AllocBuffer(size_t nLen);
266 // copies data to another string
267 bool AllocCopy(wxString&, int, int) const;
268 // effectively copies data to string
269 bool AssignCopy(size_t, const wxChar *);
270
271 // append a (sub)string
272 bool ConcatSelf(size_t nLen, const wxChar *src, size_t nMaxLen);
273 bool ConcatSelf(size_t nLen, const wxChar *src)
274 { return ConcatSelf(nLen, src, nLen); }
275
276 // functions called before writing to the string: they copy it if there
277 // are other references to our data (should be the only owner when writing)
278 bool CopyBeforeWrite();
279 bool AllocBeforeWrite(size_t);
280
281 // compatibility with wxString
282 bool Alloc(size_t nLen);
283 public:
284 // standard types
285 typedef wxChar value_type;
286 typedef wxChar char_type;
287 typedef size_t size_type;
288 typedef value_type& reference;
289 typedef const value_type& const_reference;
290 typedef value_type* pointer;
291 typedef const value_type* const_pointer;
292 typedef value_type *iterator;
293 typedef const value_type *const_iterator;
294
295 // constructors and destructor
296 // ctor for an empty string
297 wxStringBase() { Init(); }
298 // copy ctor
299 wxStringBase(const wxStringBase& stringSrc)
300 {
301 wxASSERT_MSG( stringSrc.GetStringData()->IsValid(),
302 _T("did you forget to call UngetWriteBuf()?") );
303
304 if ( stringSrc.empty() ) {
305 // nothing to do for an empty string
306 Init();
307 }
308 else {
309 m_pchData = stringSrc.m_pchData; // share same data
310 GetStringData()->Lock(); // => one more copy
311 }
312 }
313 // string containing nRepeat copies of ch
314 wxStringBase(size_type nRepeat, wxChar ch);
315 // ctor takes first nLength characters from C string
316 // (default value of npos means take all the string)
317 wxStringBase(const wxChar *psz)
318 { InitWith(psz, 0, npos); }
319 wxStringBase(const wxChar *psz, size_t nLength)
320 { InitWith(psz, 0, nLength); }
321 wxStringBase(const wxChar *psz, wxMBConv& WXUNUSED(conv), size_t nLength = npos)
322 { InitWith(psz, 0, nLength); }
323 // take nLen chars starting at nPos
324 wxStringBase(const wxStringBase& str, size_t nPos, size_t nLen)
325 {
326 wxASSERT_MSG( str.GetStringData()->IsValid(),
327 _T("did you forget to call UngetWriteBuf()?") );
328 Init();
329 size_t strLen = str.length() - nPos; nLen = strLen < nLen ? strLen : nLen;
330 InitWith(str.c_str(), nPos, nLen);
331 }
332 // take all characters from pStart to pEnd
333 wxStringBase(const void *pStart, const void *pEnd);
334
335 // dtor is not virtual, this class must not be inherited from!
336 ~wxStringBase()
337 {
338 #if defined(__VISUALC__) && (__VISUALC__ >= 1200)
339 //RN - according to the above VC++ does indeed inline this,
340 //even though it spits out two warnings
341 #pragma warning (disable:4714)
342 #endif
343
344 GetStringData()->Unlock();
345 }
346
347 #if defined(__VISUALC__) && (__VISUALC__ >= 1200)
348 //re-enable inlining warning
349 #pragma warning (default:4714)
350 #endif
351 // overloaded assignment
352 // from another wxString
353 wxStringBase& operator=(const wxStringBase& stringSrc);
354 // from a character
355 wxStringBase& operator=(wxChar ch);
356 // from a C string
357 wxStringBase& operator=(const wxChar *psz);
358
359 // return the length of the string
360 size_type size() const { return GetStringData()->nDataLength; }
361 // return the length of the string
362 size_type length() const { return size(); }
363 // return the maximum size of the string
364 size_type max_size() const { return wxSTRING_MAXLEN; }
365 // resize the string, filling the space with c if c != 0
366 void resize(size_t nSize, wxChar ch = wxT('\0'));
367 // delete the contents of the string
368 void clear() { erase(0, npos); }
369 // returns true if the string is empty
370 bool empty() const { return size() == 0; }
371 // inform string about planned change in size
372 void reserve(size_t sz) { Alloc(sz); }
373 size_type capacity() const { return GetStringData()->nAllocLength; }
374
375 // lib.string.access
376 // return the character at position n
377 value_type at(size_type n) const
378 { wxASSERT_VALID_INDEX( n ); return m_pchData[n]; }
379 value_type operator[](size_type n) const { return at(n); }
380 // returns the writable character at position n
381 reference at(size_type n)
382 { wxASSERT_VALID_INDEX( n ); CopyBeforeWrite(); return m_pchData[n]; }
383 reference operator[](size_type n)
384 { wxASSERT_VALID_INDEX( n ); CopyBeforeWrite(); return m_pchData[n]; }
385
386 // lib.string.modifiers
387 // append elements str[pos], ..., str[pos+n]
388 wxStringBase& append(const wxStringBase& str, size_t pos, size_t n)
389 {
390 wxASSERT(pos <= str.length());
391 ConcatSelf(n, str.c_str() + pos, str.length() - pos);
392 return *this;
393 }
394 // append a string
395 wxStringBase& append(const wxStringBase& str)
396 { ConcatSelf(str.length(), str.c_str()); return *this; }
397 // append first n (or all if n == npos) characters of sz
398 wxStringBase& append(const wxChar *sz)
399 { ConcatSelf(wxStrlen(sz), sz); return *this; }
400 wxStringBase& append(const wxChar *sz, size_t n)
401 { ConcatSelf(n, sz); return *this; }
402 // append n copies of ch
403 wxStringBase& append(size_t n, wxChar ch);
404 // append from first to last
405 wxStringBase& append(const_iterator first, const_iterator last)
406 { ConcatSelf(last - first, first); return *this; }
407
408 // same as `this_string = str'
409 wxStringBase& assign(const wxStringBase& str)
410 { return *this = str; }
411 // same as ` = str[pos..pos + n]
412 wxStringBase& assign(const wxStringBase& str, size_t pos, size_t n)
413 { clear(); return append(str, pos, n); }
414 // same as `= first n (or all if n == npos) characters of sz'
415 wxStringBase& assign(const wxChar *sz)
416 { clear(); return append(sz, wxStrlen(sz)); }
417 wxStringBase& assign(const wxChar *sz, size_t n)
418 { clear(); return append(sz, n); }
419 // same as `= n copies of ch'
420 wxStringBase& assign(size_t n, wxChar ch)
421 { clear(); return append(n, ch); }
422 // assign from first to last
423 wxStringBase& assign(const_iterator first, const_iterator last)
424 { clear(); return append(first, last); }
425
426 // first valid index position
427 const_iterator begin() const { return m_pchData; }
428 // position one after the last valid one
429 const_iterator end() const { return m_pchData + length(); }
430
431 // first valid index position
432 iterator begin() { CopyBeforeWrite(); return m_pchData; }
433 // position one after the last valid one
434 iterator end() { CopyBeforeWrite(); return m_pchData + length(); }
435
436 // insert another string
437 wxStringBase& insert(size_t nPos, const wxStringBase& str)
438 {
439 wxASSERT( str.GetStringData()->IsValid() );
440 return insert(nPos, str.c_str(), str.length());
441 }
442 // insert n chars of str starting at nStart (in str)
443 wxStringBase& insert(size_t nPos, const wxStringBase& str, size_t nStart, size_t n)
444 {
445 wxASSERT( str.GetStringData()->IsValid() );
446 wxASSERT( nStart < str.length() );
447 size_t strLen = str.length() - nStart;
448 n = strLen < n ? strLen : n;
449 return insert(nPos, str.c_str() + nStart, n);
450 }
451 // insert first n (or all if n == npos) characters of sz
452 wxStringBase& insert(size_t nPos, const wxChar *sz, size_t n = npos);
453 // insert n copies of ch
454 wxStringBase& insert(size_t nPos, size_t n, wxChar ch)
455 { return insert(nPos, wxStringBase(n, ch)); }
456 iterator insert(iterator it, wxChar ch)
457 { size_t idx = it - begin(); insert(idx, 1, ch); return begin() + idx; }
458 void insert(iterator it, const_iterator first, const_iterator last)
459 { insert(it - begin(), first, last - first); }
460 void insert(iterator it, size_type n, wxChar ch)
461 { insert(it - begin(), n, ch); }
462
463 // delete characters from nStart to nStart + nLen
464 wxStringBase& erase(size_type pos = 0, size_type n = npos);
465 iterator erase(iterator first, iterator last)
466 {
467 size_t idx = first - begin();
468 erase(idx, last - first);
469 return begin() + idx;
470 }
471 iterator erase(iterator first);
472
473 // explicit conversion to C string (use this with printf()!)
474 const wxChar* c_str() const { return m_pchData; }
475 const wxChar* data() const { return m_pchData; }
476
477 // replaces the substring of length nLen starting at nStart
478 wxStringBase& replace(size_t nStart, size_t nLen, const wxChar* sz);
479 // replaces the substring of length nLen starting at nStart
480 wxStringBase& replace(size_t nStart, size_t nLen, const wxStringBase& str)
481 { return replace(nStart, nLen, str.c_str()); }
482 // replaces the substring with nCount copies of ch
483 wxStringBase& replace(size_t nStart, size_t nLen, size_t nCount, wxChar ch);
484 // replaces a substring with another substring
485 wxStringBase& replace(size_t nStart, size_t nLen,
486 const wxStringBase& str, size_t nStart2, size_t nLen2);
487 // replaces the substring with first nCount chars of sz
488 wxStringBase& replace(size_t nStart, size_t nLen,
489 const wxChar* sz, size_t nCount);
490 wxStringBase& replace(iterator first, iterator last, const_pointer s)
491 { return replace(first - begin(), last - first, s); }
492 wxStringBase& replace(iterator first, iterator last, const_pointer s,
493 size_type n)
494 { return replace(first - begin(), last - first, s, n); }
495 wxStringBase& replace(iterator first, iterator last, const wxStringBase& s)
496 { return replace(first - begin(), last - first, s); }
497 wxStringBase& replace(iterator first, iterator last, size_type n, wxChar c)
498 { return replace(first - begin(), last - first, n, c); }
499 wxStringBase& replace(iterator first, iterator last,
500 const_iterator first1, const_iterator last1)
501 { return replace(first - begin(), last - first, first1, last1 - first1); }
502
503 // swap two strings
504 void swap(wxStringBase& str);
505
506 // All find() functions take the nStart argument which specifies the
507 // position to start the search on, the default value is 0. All functions
508 // return npos if there were no match.
509
510 // find a substring
511 size_t find(const wxStringBase& str, size_t nStart = 0) const;
512
513 // VC++ 1.5 can't cope with this syntax.
514 #if !defined(__VISUALC__) || defined(__WIN32__)
515 // find first n characters of sz
516 size_t find(const wxChar* sz, size_t nStart = 0, size_t n = npos) const;
517 #endif // VC++ 1.5
518
519 // find the first occurence of character ch after nStart
520 size_t find(wxChar ch, size_t nStart = 0) const;
521
522 // rfind() family is exactly like find() but works right to left
523
524 // as find, but from the end
525 size_t rfind(const wxStringBase& str, size_t nStart = npos) const;
526
527 // VC++ 1.5 can't cope with this syntax.
528 // as find, but from the end
529 size_t rfind(const wxChar* sz, size_t nStart = npos,
530 size_t n = npos) const;
531 // as find, but from the end
532 size_t rfind(wxChar ch, size_t nStart = npos) const;
533
534 // find first/last occurence of any character in the set
535
536 // as strpbrk() but starts at nStart, returns npos if not found
537 size_t find_first_of(const wxStringBase& str, size_t nStart = 0) const
538 { return find_first_of(str.c_str(), nStart); }
539 // same as above
540 size_t find_first_of(const wxChar* sz, size_t nStart = 0) const;
541 size_t find_first_of(const wxChar* sz, size_t nStart, size_t n) const;
542 // same as find(char, size_t)
543 size_t find_first_of(wxChar c, size_t nStart = 0) const
544 { return find(c, nStart); }
545 // find the last (starting from nStart) char from str in this string
546 size_t find_last_of (const wxStringBase& str, size_t nStart = npos) const
547 { return find_last_of(str.c_str(), nStart); }
548 // same as above
549 size_t find_last_of (const wxChar* sz, size_t nStart = npos) const;
550 size_t find_last_of(const wxChar* sz, size_t nStart, size_t n) const;
551 // same as above
552 size_t find_last_of(wxChar c, size_t nStart = npos) const
553 { return rfind(c, nStart); }
554
555 // find first/last occurence of any character not in the set
556
557 // as strspn() (starting from nStart), returns npos on failure
558 size_t find_first_not_of(const wxStringBase& str, size_t nStart = 0) const
559 { return find_first_not_of(str.c_str(), nStart); }
560 // same as above
561 size_t find_first_not_of(const wxChar* sz, size_t nStart = 0) const;
562 size_t find_first_not_of(const wxChar* sz, size_t nStart, size_t n) const;
563 // same as above
564 size_t find_first_not_of(wxChar ch, size_t nStart = 0) const;
565 // as strcspn()
566 size_t find_last_not_of(const wxStringBase& str, size_t nStart = npos) const
567 { return find_last_not_of(str.c_str(), nStart); }
568 // same as above
569 size_t find_last_not_of(const wxChar* sz, size_t nStart = npos) const;
570 size_t find_last_not_of(const wxChar* sz, size_t nStart, size_t n) const;
571 // same as above
572 size_t find_last_not_of(wxChar ch, size_t nStart = npos) const;
573
574 // All compare functions return -1, 0 or 1 if the [sub]string is less,
575 // equal or greater than the compare() argument.
576
577 // just like strcmp()
578 int compare(const wxStringBase& str) const
579 { return wxStrcmp(c_str(), str.c_str()); }
580 // comparison with a substring
581 int compare(size_t nStart, size_t nLen, const wxStringBase& str) const;
582 // comparison of 2 substrings
583 int compare(size_t nStart, size_t nLen,
584 const wxStringBase& str, size_t nStart2, size_t nLen2) const;
585 // just like strcmp()
586 int compare(const wxChar* sz) const
587 { return wxStrcmp(c_str(), sz); }
588 // substring comparison with first nCount characters of sz
589 int compare(size_t nStart, size_t nLen,
590 const wxChar* sz, size_t nCount = npos) const;
591
592 size_type copy(wxChar* s, size_type n, size_type pos = 0);
593
594 // substring extraction
595 wxStringBase substr(size_t nStart = 0, size_t nLen = npos) const;
596
597 // string += string
598 wxStringBase& operator+=(const wxStringBase& s) { return append(s); }
599 // string += C string
600 wxStringBase& operator+=(const wxChar *psz) { return append(psz); }
601 // string += char
602 wxStringBase& operator+=(wxChar ch) { return append(1, ch); }
603 };
604
605 #endif // !wxUSE_STL
606
607 // ---------------------------------------------------------------------------
608 // This is (yet another one) String class for C++ programmers. It doesn't use
609 // any of "advanced" C++ features (i.e. templates, exceptions, namespaces...)
610 // thus you should be able to compile it with practicaly any C++ compiler.
611 // This class uses copy-on-write technique, i.e. identical strings share the
612 // same memory as long as neither of them is changed.
613 //
614 // This class aims to be as compatible as possible with the new standard
615 // std::string class, but adds some additional functions and should be at
616 // least as efficient than the standard implementation.
617 //
618 // Performance note: it's more efficient to write functions which take "const
619 // String&" arguments than "const char *" if you assign the argument to
620 // another string.
621 //
622 // It was compiled and tested under Win32, Linux (libc 5 & 6), Solaris 5.5.
623 //
624 // To do:
625 // - ressource support (string tables in ressources)
626 // - more wide character (UNICODE) support
627 // - regular expressions support
628 // ---------------------------------------------------------------------------
629
630 class WXDLLIMPEXP_BASE wxString : public wxStringBase
631 {
632 #if !wxUSE_STL
633 friend class WXDLLIMPEXP_BASE wxArrayString;
634 #endif
635
636 // NB: special care was taken in arranging the member functions in such order
637 // that all inline functions can be effectively inlined, verify that all
638 // performace critical functions are still inlined if you change order!
639 private:
640 // if we hadn't made these operators private, it would be possible to
641 // compile "wxString s; s = 17;" without any warnings as 17 is implicitly
642 // converted to char in C and we do have operator=(char)
643 //
644 // NB: we don't need other versions (short/long and unsigned) as attempt
645 // to assign another numeric type to wxString will now result in
646 // ambiguity between operator=(char) and operator=(int)
647 wxString& operator=(int);
648
649 // these methods are not implemented - there is _no_ conversion from int to
650 // string, you're doing something wrong if the compiler wants to call it!
651 //
652 // try `s << i' or `s.Printf("%d", i)' instead
653 wxString(int);
654
655 public:
656 // constructors and destructor
657 // ctor for an empty string
658 wxString() : wxStringBase() { }
659 // copy ctor
660 wxString(const wxStringBase& stringSrc) : wxStringBase(stringSrc) { }
661 wxString(const wxString& stringSrc) : wxStringBase(stringSrc) { }
662 // string containing nRepeat copies of ch
663 wxString(wxChar ch, size_t nRepeat = 1)
664 : wxStringBase(nRepeat, ch) { }
665 wxString(size_t nRepeat, wxChar ch)
666 : wxStringBase(nRepeat, ch) { }
667 // ctor takes first nLength characters from C string
668 // (default value of npos means take all the string)
669 wxString(const wxChar *psz)
670 : wxStringBase(psz ? psz : wxT("")) { }
671 wxString(const wxChar *psz, size_t nLength)
672 : wxStringBase(psz, nLength) { }
673 wxString(const wxChar *psz, wxMBConv& WXUNUSED(conv), size_t nLength = npos)
674 : wxStringBase(psz, nLength == npos ? wxStrlen(psz) : nLength) { }
675
676 #if wxUSE_UNICODE
677 // from multibyte string
678 // (NB: nLength is right now number of Unicode characters, not
679 // characters in psz! So try not to use it yet!)
680 wxString(const char *psz, wxMBConv& conv, size_t nLength = npos);
681 // from wxWCharBuffer (i.e. return from wxGetString)
682 wxString(const wxWCharBuffer& psz) : wxStringBase(psz.data()) { }
683 #else // ANSI
684 // from C string (for compilers using unsigned char)
685 wxString(const unsigned char* psz, size_t nLength = npos)
686 : wxStringBase((const char*)psz, nLength) { }
687
688 #if wxUSE_WCHAR_T
689 // from wide (Unicode) string
690 wxString(const wchar_t *pwz, wxMBConv& conv = wxConvLibc, size_t nLength = npos);
691 #endif // !wxUSE_WCHAR_T
692
693 // from wxCharBuffer
694 wxString(const wxCharBuffer& psz)
695 : wxStringBase(psz, npos) { }
696 #endif // Unicode/ANSI
697
698 // generic attributes & operations
699 // as standard strlen()
700 size_t Len() const { return length(); }
701 // string contains any characters?
702 bool IsEmpty() const { return empty(); }
703 // empty string is "FALSE", so !str will return TRUE
704 bool operator!() const { return IsEmpty(); }
705 // truncate the string to given length
706 wxString& Truncate(size_t uiLen);
707 // empty string contents
708 void Empty()
709 {
710 Truncate(0);
711
712 wxASSERT_MSG( IsEmpty(), _T("string not empty after call to Empty()?") );
713 }
714 // empty the string and free memory
715 void Clear()
716 {
717 wxString tmp(wxEmptyString);
718 swap(tmp);
719 }
720
721 // contents test
722 // Is an ascii value
723 bool IsAscii() const;
724 // Is a number
725 bool IsNumber() const;
726 // Is a word
727 bool IsWord() const;
728
729 // data access (all indexes are 0 based)
730 // read access
731 wxChar GetChar(size_t n) const
732 { return operator[](n); }
733 // read/write access
734 wxChar& GetWritableChar(size_t n)
735 { return operator[](n); }
736 // write access
737 void SetChar(size_t n, wxChar ch)
738 { operator[](n) = ch; }
739
740 // get last character
741 wxChar Last() const
742 {
743 wxASSERT_MSG( !IsEmpty(), _T("wxString: index out of bounds") );
744
745 return operator[](length() - 1);
746 }
747
748 // get writable last character
749 wxChar& Last()
750 {
751 wxASSERT_MSG( !IsEmpty(), _T("wxString: index out of bounds") );
752 return operator[](length() - 1);
753 }
754
755 /*
756 So why do we have all these overloaded operator[]s? A bit of history:
757 initially there was only one of them, taking size_t. Then people
758 started complaining because they wanted to use ints as indices (I
759 wonder why) and compilers were giving warnings about it, so we had to
760 add the operator[](int). Then it became apparent that you couldn't
761 write str[0] any longer because there was ambiguity between two
762 overloads and so you now had to write str[0u] (or, of course, use the
763 explicit casts to either int or size_t but nobody did this).
764
765 Finally, someone decided to compile wxWin on an Alpha machine and got
766 a surprize: str[0u] didn't compile there because it is of type
767 unsigned int and size_t is unsigned _long_ on Alpha and so there was
768 ambiguity between converting uint to int or ulong. To fix this one we
769 now add operator[](uint) for the machines where size_t is not already
770 the same as unsigned int - hopefully this fixes the problem (for some
771 time)
772
773 The only real fix is, of course, to remove all versions but the one
774 taking size_t...
775 */
776
777 // operator version of GetChar
778 wxChar operator[](int n) const
779 { return wxStringBase::operator[](n); }
780 wxChar& operator[](size_type n)
781 { return wxStringBase::operator[](n); }
782 wxChar operator[](size_type n) const
783 { return wxStringBase::operator[](n); }
784 #ifndef wxSIZE_T_IS_UINT
785 // operator version of GetChar
786 wxChar operator[](unsigned int n) const
787 { return wxStringBase::operator[](n); }
788
789 // operator version of GetWriteableChar
790 wxChar& operator[](unsigned int n)
791 { return wxStringBase::operator[](n); }
792 #endif // size_t != unsigned int
793
794 // implicit conversion to C string
795 operator const wxChar*() const { return c_str(); }
796
797 // identical to c_str(), for wxWin 1.6x compatibility
798 const wxChar* wx_str() const { return c_str(); }
799 // identical to c_str(), for MFC compatibility
800 const wxChar* GetData() const { return c_str(); }
801
802 // conversion to/from plain (i.e. 7 bit) ASCII: this is useful for
803 // converting numbers or strings which are certain not to contain special
804 // chars (typically system functions, X atoms, environment variables etc.)
805 //
806 // the behaviour of these functions with the strings containing anything
807 // else than 7 bit ASCII characters is undefined, use at your own risk.
808 #if wxUSE_UNICODE
809 static wxString FromAscii(const char *ascii); // string
810 static wxString FromAscii(const char ascii); // char
811 const wxCharBuffer ToAscii() const;
812 #else // ANSI
813 static wxString FromAscii(const char *ascii) { return wxString( ascii ); }
814 static wxString FromAscii(const char ascii) { return wxString( ascii ); }
815 const char *ToAscii() const { return c_str(); }
816 #endif // Unicode/!Unicode
817
818 // conversions with (possible) format conversions: have to return a
819 // buffer with temporary data
820 //
821 // the functions defined (in either Unicode or ANSI) mode are mb_str() to
822 // return an ANSI (multibyte) string, wc_str() to return a wide string and
823 // fn_str() to return a string which should be used with the OS APIs
824 // accepting the file names. The return value is always the same, but the
825 // type differs because a function may either return pointer to the buffer
826 // directly or have to use intermediate buffer for translation.
827 #if wxUSE_UNICODE
828 const wxCharBuffer mb_str(wxMBConv& conv = wxConvLibc) const
829 { return conv.cWC2MB(c_str()); }
830
831 const wxWX2MBbuf mbc_str() const { return mb_str(*wxConvCurrent); }
832
833 const wxChar* wc_str() const { return c_str(); }
834
835 // for compatibility with !wxUSE_UNICODE version
836 const wxChar* wc_str(wxMBConv& WXUNUSED(conv)) const { return c_str(); }
837
838 #if wxMBFILES
839 const wxCharBuffer fn_str() const { return mb_str(wxConvFile); }
840 #else // !wxMBFILES
841 const wxChar* fn_str() const { return c_str(); }
842 #endif // wxMBFILES/!wxMBFILES
843 #else // ANSI
844 const wxChar* mb_str() const { return c_str(); }
845
846 // for compatibility with wxUSE_UNICODE version
847 const wxChar* mb_str(wxMBConv& WXUNUSED(conv)) const { return c_str(); }
848
849 const wxWX2MBbuf mbc_str() const { return mb_str(); }
850
851 #if wxUSE_WCHAR_T
852 const wxWCharBuffer wc_str(wxMBConv& conv) const
853 { return conv.cMB2WC(c_str()); }
854 #endif // wxUSE_WCHAR_T
855
856 const wxChar* fn_str() const { return c_str(); }
857 #endif // Unicode/ANSI
858
859 // overloaded assignment
860 // from another wxString
861 wxString& operator=(const wxStringBase& stringSrc)
862 { return (wxString&)wxStringBase::operator=(stringSrc); }
863 // from a character
864 wxString& operator=(wxChar ch)
865 { return (wxString&)wxStringBase::operator=(ch); }
866 // from a C string
867 wxString& operator=(const wxChar *psz)
868 { return (wxString&)wxStringBase::operator=(psz); }
869 #if wxUSE_UNICODE
870 // from wxWCharBuffer
871 wxString& operator=(const wxWCharBuffer& psz)
872 { (void) operator=((const wchar_t *)psz); return *this; }
873 #else // ANSI
874 // from another kind of C string
875 wxString& operator=(const unsigned char* psz);
876 #if wxUSE_WCHAR_T
877 // from a wide string
878 wxString& operator=(const wchar_t *pwz);
879 #endif
880 // from wxCharBuffer
881 wxString& operator=(const wxCharBuffer& psz)
882 { (void) operator=((const char *)psz); return *this; }
883 #endif // Unicode/ANSI
884
885 // string concatenation
886 // in place concatenation
887 /*
888 Concatenate and return the result. Note that the left to right
889 associativity of << allows to write things like "str << str1 << str2
890 << ..." (unlike with +=)
891 */
892 // string += string
893 wxString& operator<<(const wxString& s)
894 {
895 #if !wxUSE_STL
896 wxASSERT_MSG( s.GetStringData()->IsValid(),
897 _T("did you forget to call UngetWriteBuf()?") );
898 #endif
899
900 append(s);
901 return *this;
902 }
903 // string += C string
904 wxString& operator<<(const wxChar *psz)
905 { append(psz); return *this; }
906 // string += char
907 wxString& operator<<(wxChar ch) { append(1, ch); return *this; }
908
909 // string += buffer (i.e. from wxGetString)
910 #if wxUSE_UNICODE
911 wxString& operator<<(const wxWCharBuffer& s)
912 { (void)operator<<((const wchar_t *)s); return *this; }
913 void operator+=(const wxWCharBuffer& s)
914 { (void)operator<<((const wchar_t *)s); }
915 #else // !wxUSE_UNICODE
916 wxString& operator<<(const wxCharBuffer& s)
917 { (void)operator<<((const char *)s); return *this; }
918 void operator+=(const wxCharBuffer& s)
919 { (void)operator<<((const char *)s); }
920 #endif // wxUSE_UNICODE/!wxUSE_UNICODE
921
922 // string += C string
923 wxString& Append(const wxString& s)
924 {
925 // test for IsEmpty() to share the string if possible
926 if ( IsEmpty() )
927 *this = s;
928 else
929 append(s);
930 return *this;
931 }
932 wxString& Append(const wxChar* psz)
933 { append(psz); return *this; }
934 // append count copies of given character
935 wxString& Append(wxChar ch, size_t count = 1u)
936 { append(count, ch); return *this; }
937 wxString& Append(const wxChar* psz, size_t nLen)
938 { append(psz, nLen); return *this; }
939
940 // prepend a string, return the string itself
941 wxString& Prepend(const wxString& str)
942 { *this = str + *this; return *this; }
943
944 // non-destructive concatenation
945 //
946 friend wxString WXDLLIMPEXP_BASE operator+(const wxString& string1, const wxString& string2);
947 //
948 friend wxString WXDLLIMPEXP_BASE operator+(const wxString& string, wxChar ch);
949 //
950 friend wxString WXDLLIMPEXP_BASE operator+(wxChar ch, const wxString& string);
951 //
952 friend wxString WXDLLIMPEXP_BASE operator+(const wxString& string, const wxChar *psz);
953 //
954 friend wxString WXDLLIMPEXP_BASE operator+(const wxChar *psz, const wxString& string);
955
956 // stream-like functions
957 // insert an int into string
958 wxString& operator<<(int i)
959 { return (*this) << Format(_T("%d"), i); }
960 // insert an unsigned int into string
961 wxString& operator<<(unsigned int ui)
962 { return (*this) << Format(_T("%u"), ui); }
963 // insert a long into string
964 wxString& operator<<(long l)
965 { return (*this) << Format(_T("%ld"), l); }
966 // insert an unsigned long into string
967 wxString& operator<<(unsigned long ul)
968 { return (*this) << Format(_T("%lu"), ul); }
969 // insert a float into string
970 wxString& operator<<(float f)
971 { return (*this) << Format(_T("%f"), f); }
972 // insert a double into string
973 wxString& operator<<(double d)
974 { return (*this) << Format(_T("%g"), d); }
975
976 // string comparison
977 // case-sensitive comparison (returns a value < 0, = 0 or > 0)
978 int Cmp(const wxChar *psz) const { return wxStrcmp(c_str(), psz); }
979 // same as Cmp() but not case-sensitive
980 int CmpNoCase(const wxChar *psz) const { return wxStricmp(c_str(), psz); }
981 // test for the string equality, either considering case or not
982 // (if compareWithCase then the case matters)
983 bool IsSameAs(const wxChar *psz, bool compareWithCase = TRUE) const
984 { return (compareWithCase ? Cmp(psz) : CmpNoCase(psz)) == 0; }
985 // comparison with a signle character: returns TRUE if equal
986 bool IsSameAs(wxChar c, bool compareWithCase = TRUE) const
987 {
988 return (length() == 1) && (compareWithCase ? GetChar(0u) == c
989 : wxToupper(GetChar(0u)) == wxToupper(c));
990 }
991
992 // simple sub-string extraction
993 // return substring starting at nFirst of length nCount (or till the end
994 // if nCount = default value)
995 wxString Mid(size_t nFirst, size_t nCount = npos) const;
996
997 // operator version of Mid()
998 wxString operator()(size_t start, size_t len) const
999 { return Mid(start, len); }
1000
1001 // check that the string starts with prefix and return the rest of the
1002 // string in the provided pointer if it is not NULL, otherwise return
1003 // FALSE
1004 bool StartsWith(const wxChar *prefix, wxString *rest = NULL) const;
1005
1006 // get first nCount characters
1007 wxString Left(size_t nCount) const;
1008 // get last nCount characters
1009 wxString Right(size_t nCount) const;
1010 // get all characters before the first occurance of ch
1011 // (returns the whole string if ch not found)
1012 wxString BeforeFirst(wxChar ch) const;
1013 // get all characters before the last occurence of ch
1014 // (returns empty string if ch not found)
1015 wxString BeforeLast(wxChar ch) const;
1016 // get all characters after the first occurence of ch
1017 // (returns empty string if ch not found)
1018 wxString AfterFirst(wxChar ch) const;
1019 // get all characters after the last occurence of ch
1020 // (returns the whole string if ch not found)
1021 wxString AfterLast(wxChar ch) const;
1022
1023 // for compatibility only, use more explicitly named functions above
1024 wxString Before(wxChar ch) const { return BeforeLast(ch); }
1025 wxString After(wxChar ch) const { return AfterFirst(ch); }
1026
1027 // case conversion
1028 // convert to upper case in place, return the string itself
1029 wxString& MakeUpper();
1030 // convert to upper case, return the copy of the string
1031 // Here's something to remember: BC++ doesn't like returns in inlines.
1032 wxString Upper() const ;
1033 // convert to lower case in place, return the string itself
1034 wxString& MakeLower();
1035 // convert to lower case, return the copy of the string
1036 wxString Lower() const ;
1037
1038 // trimming/padding whitespace (either side) and truncating
1039 // remove spaces from left or from right (default) side
1040 wxString& Trim(bool bFromRight = TRUE);
1041 // add nCount copies chPad in the beginning or at the end (default)
1042 wxString& Pad(size_t nCount, wxChar chPad = wxT(' '), bool bFromRight = TRUE);
1043
1044 // searching and replacing
1045 // searching (return starting index, or -1 if not found)
1046 int Find(wxChar ch, bool bFromEnd = FALSE) const; // like strchr/strrchr
1047 // searching (return starting index, or -1 if not found)
1048 int Find(const wxChar *pszSub) const; // like strstr
1049 // replace first (or all of bReplaceAll) occurences of substring with
1050 // another string, returns the number of replacements made
1051 size_t Replace(const wxChar *szOld,
1052 const wxChar *szNew,
1053 bool bReplaceAll = TRUE);
1054
1055 // check if the string contents matches a mask containing '*' and '?'
1056 bool Matches(const wxChar *szMask) const;
1057
1058 // conversion to numbers: all functions return TRUE only if the whole
1059 // string is a number and put the value of this number into the pointer
1060 // provided, the base is the numeric base in which the conversion should be
1061 // done and must be comprised between 2 and 36 or be 0 in which case the
1062 // standard C rules apply (leading '0' => octal, "0x" => hex)
1063 // convert to a signed integer
1064 bool ToLong(long *val, int base = 10) const;
1065 // convert to an unsigned integer
1066 bool ToULong(unsigned long *val, int base = 10) const;
1067 // convert to a double
1068 bool ToDouble(double *val) const;
1069
1070 // formated input/output
1071 // as sprintf(), returns the number of characters written or < 0 on error
1072 // (take 'this' into account in attribute parameter count)
1073 int Printf(const wxChar *pszFormat, ...) ATTRIBUTE_PRINTF_2;
1074 // as vprintf(), returns the number of characters written or < 0 on error
1075 int PrintfV(const wxChar* pszFormat, va_list argptr);
1076
1077 // returns the string containing the result of Printf() to it
1078 static wxString Format(const wxChar *pszFormat, ...) ATTRIBUTE_PRINTF_1;
1079 // the same as above, but takes a va_list
1080 static wxString FormatV(const wxChar *pszFormat, va_list argptr);
1081
1082 // raw access to string memory
1083 // ensure that string has space for at least nLen characters
1084 // only works if the data of this string is not shared
1085 bool Alloc(size_t nLen) { reserve(nLen); /*return capacity() >= nLen;*/ return true; }
1086 // minimize the string's memory
1087 // only works if the data of this string is not shared
1088 bool Shrink();
1089 #if !wxUSE_STL
1090 // get writable buffer of at least nLen bytes. Unget() *must* be called
1091 // a.s.a.p. to put string back in a reasonable state!
1092 wxChar *GetWriteBuf(size_t nLen);
1093 // call this immediately after GetWriteBuf() has been used
1094 void UngetWriteBuf();
1095 void UngetWriteBuf(size_t nLen);
1096 #endif
1097
1098 // wxWindows version 1 compatibility functions
1099
1100 // use Mid()
1101 wxString SubString(size_t from, size_t to) const
1102 { return Mid(from, (to - from + 1)); }
1103 // values for second parameter of CompareTo function
1104 enum caseCompare {exact, ignoreCase};
1105 // values for first parameter of Strip function
1106 enum stripType {leading = 0x1, trailing = 0x2, both = 0x3};
1107
1108 // use Printf()
1109 // (take 'this' into account in attribute parameter count)
1110 int sprintf(const wxChar *pszFormat, ...) ATTRIBUTE_PRINTF_2;
1111
1112 // use Cmp()
1113 inline int CompareTo(const wxChar* psz, caseCompare cmp = exact) const
1114 { return cmp == exact ? Cmp(psz) : CmpNoCase(psz); }
1115
1116 // use Len
1117 size_t Length() const { return length(); }
1118 // Count the number of characters
1119 int Freq(wxChar ch) const;
1120 // use MakeLower
1121 void LowerCase() { MakeLower(); }
1122 // use MakeUpper
1123 void UpperCase() { MakeUpper(); }
1124 // use Trim except that it doesn't change this string
1125 wxString Strip(stripType w = trailing) const;
1126
1127 // use Find (more general variants not yet supported)
1128 size_t Index(const wxChar* psz) const { return Find(psz); }
1129 size_t Index(wxChar ch) const { return Find(ch); }
1130 // use Truncate
1131 wxString& Remove(size_t pos) { return Truncate(pos); }
1132 wxString& RemoveLast(size_t n = 1) { return Truncate(length() - n); }
1133
1134 wxString& Remove(size_t nStart, size_t nLen)
1135 { return (wxString&)erase( nStart, nLen ); }
1136
1137 // use Find()
1138 int First( const wxChar ch ) const { return Find(ch); }
1139 int First( const wxChar* psz ) const { return Find(psz); }
1140 int First( const wxString &str ) const { return Find(str); }
1141 int Last( const wxChar ch ) const { return Find(ch, TRUE); }
1142 bool Contains(const wxString& str) const { return Find(str) != -1; }
1143
1144 // use IsEmpty()
1145 bool IsNull() const { return IsEmpty(); }
1146
1147 // std::string compatibility functions
1148
1149 // take nLen chars starting at nPos
1150 wxString(const wxString& str, size_t nPos, size_t nLen)
1151 : wxStringBase(str, nPos, nLen) { }
1152 // take all characters from pStart to pEnd
1153 wxString(const void *pStart, const void *pEnd)
1154 : wxStringBase((const wxChar*)pStart, (const wxChar*)pEnd) { }
1155 #if wxUSE_STL
1156 wxString(const_iterator first, const_iterator last)
1157 : wxStringBase(first, last) { }
1158 #endif
1159
1160 // lib.string.modifiers
1161 // append elements str[pos], ..., str[pos+n]
1162 wxString& append(const wxString& str, size_t pos, size_t n)
1163 { return (wxString&)wxStringBase::append(str, pos, n); }
1164 // append a string
1165 wxString& append(const wxString& str)
1166 { return (wxString&)wxStringBase::append(str); }
1167 // append first n (or all if n == npos) characters of sz
1168 wxString& append(const wxChar *sz)
1169 { return (wxString&)wxStringBase::append(sz); }
1170 wxString& append(const wxChar *sz, size_t n)
1171 { return (wxString&)wxStringBase::append(sz, n); }
1172 // append n copies of ch
1173 wxString& append(size_t n, wxChar ch)
1174 { return (wxString&)wxStringBase::append(n, ch); }
1175 // append from first to last
1176 wxString& append(const_iterator first, const_iterator last)
1177 { return (wxString&)wxStringBase::append(first, last); }
1178
1179 // same as `this_string = str'
1180 wxString& assign(const wxString& str)
1181 { return (wxString&)wxStringBase::assign(str); }
1182 // same as ` = str[pos..pos + n]
1183 wxString& assign(const wxString& str, size_t pos, size_t n)
1184 { return (wxString&)wxStringBase::assign(str, pos, n); }
1185 // same as `= first n (or all if n == npos) characters of sz'
1186 wxString& assign(const wxChar *sz)
1187 { return (wxString&)wxStringBase::assign(sz); }
1188 wxString& assign(const wxChar *sz, size_t n)
1189 { return (wxString&)wxStringBase::assign(sz, n); }
1190 // same as `= n copies of ch'
1191 wxString& assign(size_t n, wxChar ch)
1192 { return (wxString&)wxStringBase::assign(n, ch); }
1193 // assign from first to last
1194 wxString& assign(const_iterator first, const_iterator last)
1195 { return (wxString&)wxStringBase::assign(first, last); }
1196
1197 // string comparison
1198 #ifndef HAVE_STD_STRING_COMPARE
1199 int compare(const wxStringBase& str) const;
1200 // comparison with a substring
1201 int compare(size_t nStart, size_t nLen, const wxStringBase& str) const;
1202 // comparison of 2 substrings
1203 int compare(size_t nStart, size_t nLen,
1204 const wxStringBase& str, size_t nStart2, size_t nLen2) const;
1205 // just like strcmp()
1206 int compare(const wxChar* sz) const;
1207 // substring comparison with first nCount characters of sz
1208 int compare(size_t nStart, size_t nLen,
1209 const wxChar* sz, size_t nCount = npos) const;
1210 #endif // !defined HAVE_STD_STRING_COMPARE
1211
1212 // insert another string
1213 wxString& insert(size_t nPos, const wxString& str)
1214 { return (wxString&)wxStringBase::insert(nPos, str); }
1215 // insert n chars of str starting at nStart (in str)
1216 wxString& insert(size_t nPos, const wxString& str, size_t nStart, size_t n)
1217 { return (wxString&)wxStringBase::insert(nPos, str, nStart, n); }
1218 // insert first n (or all if n == npos) characters of sz
1219 wxString& insert(size_t nPos, const wxChar *sz)
1220 { return (wxString&)wxStringBase::insert(nPos, sz); }
1221 wxString& insert(size_t nPos, const wxChar *sz, size_t n)
1222 { return (wxString&)wxStringBase::insert(nPos, sz, n); }
1223 // insert n copies of ch
1224 wxString& insert(size_t nPos, size_t n, wxChar ch)
1225 { return (wxString&)wxStringBase::insert(nPos, n, ch); }
1226 iterator insert(iterator it, wxChar ch)
1227 { return wxStringBase::insert(it, ch); }
1228 void insert(iterator it, const_iterator first, const_iterator last)
1229 { wxStringBase::insert(it, first, last); }
1230 void insert(iterator it, size_type n, wxChar ch)
1231 { wxStringBase::insert(it, n, ch); }
1232
1233 // delete characters from nStart to nStart + nLen
1234 wxString& erase(size_type pos = 0, size_type n = npos)
1235 { return (wxString&)wxStringBase::erase(pos, n); }
1236 iterator erase(iterator first, iterator last)
1237 { return wxStringBase::erase(first, last); }
1238 iterator erase(iterator first)
1239 { return wxStringBase::erase(first); }
1240
1241 #ifdef wxSTRING_BASE_HASNT_CLEAR
1242 void clear() { erase(); }
1243 #endif
1244
1245 // replaces the substring of length nLen starting at nStart
1246 wxString& replace(size_t nStart, size_t nLen, const wxChar* sz)
1247 { return (wxString&)wxStringBase::replace(nStart, nLen, sz); }
1248 // replaces the substring of length nLen starting at nStart
1249 wxString& replace(size_t nStart, size_t nLen, const wxString& str)
1250 { return (wxString&)wxStringBase::replace(nStart, nLen, str); }
1251 // replaces the substring with nCount copies of ch
1252 wxString& replace(size_t nStart, size_t nLen, size_t nCount, wxChar ch)
1253 { return (wxString&)wxStringBase::replace(nStart, nLen, nCount, ch); }
1254 // replaces a substring with another substring
1255 wxString& replace(size_t nStart, size_t nLen,
1256 const wxString& str, size_t nStart2, size_t nLen2)
1257 { return (wxString&)wxStringBase::replace(nStart, nLen, str,
1258 nStart2, nLen2); }
1259 // replaces the substring with first nCount chars of sz
1260 wxString& replace(size_t nStart, size_t nLen,
1261 const wxChar* sz, size_t nCount)
1262 { return (wxString&)wxStringBase::replace(nStart, nLen, sz, nCount); }
1263 wxString& replace(iterator first, iterator last, const_pointer s)
1264 { return (wxString&)wxStringBase::replace(first, last, s); }
1265 wxString& replace(iterator first, iterator last, const_pointer s,
1266 size_type n)
1267 { return (wxString&)wxStringBase::replace(first, last, s, n); }
1268 wxString& replace(iterator first, iterator last, const wxString& s)
1269 { return (wxString&)wxStringBase::replace(first, last, s); }
1270 wxString& replace(iterator first, iterator last, size_type n, wxChar c)
1271 { return (wxString&)wxStringBase::replace(first, last, n, c); }
1272 wxString& replace(iterator first, iterator last,
1273 const_iterator first1, const_iterator last1)
1274 { return (wxString&)wxStringBase::replace(first, last, first1, last1); }
1275
1276 // string += string
1277 wxString& operator+=(const wxString& s)
1278 { return (wxString&)wxStringBase::operator+=(s); }
1279 // string += C string
1280 wxString& operator+=(const wxChar *psz)
1281 { return (wxString&)wxStringBase::operator+=(psz); }
1282 // string += char
1283 wxString& operator+=(wxChar ch)
1284 { return (wxString&)wxStringBase::operator+=(ch); }
1285 };
1286
1287 // define wxArrayString, for compatibility
1288 #if WXWIN_COMPATIBILITY_2_4 && !wxUSE_STL
1289 #include "wx/arrstr.h"
1290 #endif
1291
1292 // ----------------------------------------------------------------------------
1293 // wxStringBuffer: a tiny class allowing to get a writable pointer into string
1294 // ----------------------------------------------------------------------------
1295
1296 #if wxUSE_STL
1297
1298 class WXDLLIMPEXP_BASE wxStringBuffer
1299 {
1300 public:
1301 wxStringBuffer(wxString& str, size_t lenWanted = 1024)
1302 : m_str(str), m_buf(lenWanted)
1303 { }
1304
1305 ~wxStringBuffer() { m_str.assign(m_buf.data(), wxStrlen(m_buf.data())); }
1306
1307 operator wxChar*() { return m_buf.data(); }
1308
1309 private:
1310 wxString& m_str;
1311 #if wxUSE_UNICODE
1312 wxWCharBuffer m_buf;
1313 #else
1314 wxCharBuffer m_buf;
1315 #endif
1316
1317 DECLARE_NO_COPY_CLASS(wxStringBuffer)
1318 };
1319
1320 class WXDLLIMPEXP_BASE wxStringBufferLength
1321 {
1322 public:
1323 wxStringBufferLength(wxString& str, size_t lenWanted = 1024)
1324 : m_str(str), m_buf(lenWanted), m_len(0), m_lenSet(false)
1325 { }
1326
1327 ~wxStringBufferLength()
1328 {
1329 wxASSERT(m_lenSet);
1330 m_str.assign(m_buf.data(), m_len);
1331 }
1332
1333 operator wxChar*() { return m_buf.data(); }
1334 void SetLength(size_t length) { m_len = length; m_lenSet = true; }
1335
1336 private:
1337 wxString& m_str;
1338 #if wxUSE_UNICODE
1339 wxWCharBuffer m_buf;
1340 #else
1341 wxCharBuffer m_buf;
1342 #endif
1343 size_t m_len;
1344 bool m_lenSet;
1345
1346 DECLARE_NO_COPY_CLASS(wxStringBufferLength)
1347 };
1348
1349 #else // if !wxUSE_STL
1350
1351 class WXDLLIMPEXP_BASE wxStringBuffer
1352 {
1353 public:
1354 wxStringBuffer(wxString& str, size_t lenWanted = 1024)
1355 : m_str(str), m_buf(NULL)
1356 { m_buf = m_str.GetWriteBuf(lenWanted); }
1357
1358 ~wxStringBuffer() { m_str.UngetWriteBuf(); }
1359
1360 operator wxChar*() const { return m_buf; }
1361
1362 private:
1363 wxString& m_str;
1364 wxChar *m_buf;
1365
1366 DECLARE_NO_COPY_CLASS(wxStringBuffer)
1367 };
1368
1369 class WXDLLIMPEXP_BASE wxStringBufferLength
1370 {
1371 public:
1372 wxStringBufferLength(wxString& str, size_t lenWanted = 1024)
1373 : m_str(str), m_buf(NULL), m_len(0), m_lenSet(false)
1374 { m_buf = m_str.GetWriteBuf(lenWanted); }
1375
1376 ~wxStringBufferLength()
1377 {
1378 wxASSERT(m_lenSet);
1379 m_str.UngetWriteBuf(m_len);
1380 }
1381
1382 operator wxChar*() const { return m_buf; }
1383 void SetLength(size_t length) { m_len = length; m_lenSet = true; }
1384
1385 private:
1386 wxString& m_str;
1387 wxChar *m_buf;
1388 size_t m_len;
1389 bool m_lenSet;
1390
1391 DECLARE_NO_COPY_CLASS(wxStringBufferLength)
1392 };
1393
1394 #endif // !wxUSE_STL
1395
1396 // ---------------------------------------------------------------------------
1397 // wxString comparison functions: operator versions are always case sensitive
1398 // ---------------------------------------------------------------------------
1399
1400 #if wxUSE_STL
1401
1402 inline bool operator==(const wxString& s1, const wxString& s2)
1403 { return s1.compare(s2) == 0; }
1404 inline bool operator==(const wxString& s1, const wxChar * s2)
1405 { return s1.compare(s2) == 0; }
1406 inline bool operator==(const wxChar * s1, const wxString& s2)
1407 { return s2.compare(s1) == 0; }
1408 inline bool operator!=(const wxString& s1, const wxString& s2)
1409 { return s1.compare(s2) != 0; }
1410 inline bool operator!=(const wxString& s1, const wxChar * s2)
1411 { return s1.compare(s2) != 0; }
1412 inline bool operator!=(const wxChar * s1, const wxString& s2)
1413 { return s2.compare(s1) != 0; }
1414 inline bool operator< (const wxString& s1, const wxString& s2)
1415 { return s1.compare(s2) < 0; }
1416 inline bool operator< (const wxString& s1, const wxChar * s2)
1417 { return s1.compare(s2) < 0; }
1418 inline bool operator< (const wxChar * s1, const wxString& s2)
1419 { return s2.compare(s1) > 0; }
1420 inline bool operator> (const wxString& s1, const wxString& s2)
1421 { return s1.compare(s2) > 0; }
1422 inline bool operator> (const wxString& s1, const wxChar * s2)
1423 { return s1.compare(s2) > 0; }
1424 inline bool operator> (const wxChar * s1, const wxString& s2)
1425 { return s2.compare(s1) < 0; }
1426 inline bool operator<=(const wxString& s1, const wxString& s2)
1427 { return s1.compare(s2) <= 0; }
1428 inline bool operator<=(const wxString& s1, const wxChar * s2)
1429 { return s1.compare(s2) <= 0; }
1430 inline bool operator<=(const wxChar * s1, const wxString& s2)
1431 { return s2.compare(s1) >= 0; }
1432 inline bool operator>=(const wxString& s1, const wxString& s2)
1433 { return s1.compare(s2) >= 0; }
1434 inline bool operator>=(const wxString& s1, const wxChar * s2)
1435 { return s1.compare(s2) >= 0; }
1436 inline bool operator>=(const wxChar * s1, const wxString& s2)
1437 { return s2.compare(s1) <= 0; }
1438
1439 #else // if !wxUSE_STL
1440
1441 inline bool operator==(const wxString& s1, const wxString& s2)
1442 { return (s1.Len() == s2.Len()) && (s1.Cmp(s2) == 0); }
1443 inline bool operator==(const wxString& s1, const wxChar * s2)
1444 { return s1.Cmp(s2) == 0; }
1445 inline bool operator==(const wxChar * s1, const wxString& s2)
1446 { return s2.Cmp(s1) == 0; }
1447 inline bool operator!=(const wxString& s1, const wxString& s2)
1448 { return (s1.Len() != s2.Len()) || (s1.Cmp(s2) != 0); }
1449 inline bool operator!=(const wxString& s1, const wxChar * s2)
1450 { return s1.Cmp(s2) != 0; }
1451 inline bool operator!=(const wxChar * s1, const wxString& s2)
1452 { return s2.Cmp(s1) != 0; }
1453 inline bool operator< (const wxString& s1, const wxString& s2)
1454 { return s1.Cmp(s2) < 0; }
1455 inline bool operator< (const wxString& s1, const wxChar * s2)
1456 { return s1.Cmp(s2) < 0; }
1457 inline bool operator< (const wxChar * s1, const wxString& s2)
1458 { return s2.Cmp(s1) > 0; }
1459 inline bool operator> (const wxString& s1, const wxString& s2)
1460 { return s1.Cmp(s2) > 0; }
1461 inline bool operator> (const wxString& s1, const wxChar * s2)
1462 { return s1.Cmp(s2) > 0; }
1463 inline bool operator> (const wxChar * s1, const wxString& s2)
1464 { return s2.Cmp(s1) < 0; }
1465 inline bool operator<=(const wxString& s1, const wxString& s2)
1466 { return s1.Cmp(s2) <= 0; }
1467 inline bool operator<=(const wxString& s1, const wxChar * s2)
1468 { return s1.Cmp(s2) <= 0; }
1469 inline bool operator<=(const wxChar * s1, const wxString& s2)
1470 { return s2.Cmp(s1) >= 0; }
1471 inline bool operator>=(const wxString& s1, const wxString& s2)
1472 { return s1.Cmp(s2) >= 0; }
1473 inline bool operator>=(const wxString& s1, const wxChar * s2)
1474 { return s1.Cmp(s2) >= 0; }
1475 inline bool operator>=(const wxChar * s1, const wxString& s2)
1476 { return s2.Cmp(s1) <= 0; }
1477
1478 #endif // !wxUSE_STL
1479
1480 // comparison with char
1481 inline bool operator==(wxChar c, const wxString& s) { return s.IsSameAs(c); }
1482 inline bool operator==(const wxString& s, wxChar c) { return s.IsSameAs(c); }
1483 inline bool operator!=(wxChar c, const wxString& s) { return !s.IsSameAs(c); }
1484 inline bool operator!=(const wxString& s, wxChar c) { return !s.IsSameAs(c); }
1485
1486 #if wxUSE_UNICODE
1487 inline bool operator==(const wxString& s1, const wxWCharBuffer& s2)
1488 { return (s1.Cmp((const wchar_t *)s2) == 0); }
1489 inline bool operator==(const wxWCharBuffer& s1, const wxString& s2)
1490 { return (s2.Cmp((const wchar_t *)s1) == 0); }
1491 inline bool operator!=(const wxString& s1, const wxWCharBuffer& s2)
1492 { return (s1.Cmp((const wchar_t *)s2) != 0); }
1493 inline bool operator!=(const wxWCharBuffer& s1, const wxString& s2)
1494 { return (s2.Cmp((const wchar_t *)s1) != 0); }
1495 #else // !wxUSE_UNICODE
1496 inline bool operator==(const wxString& s1, const wxCharBuffer& s2)
1497 { return (s1.Cmp((const char *)s2) == 0); }
1498 inline bool operator==(const wxCharBuffer& s1, const wxString& s2)
1499 { return (s2.Cmp((const char *)s1) == 0); }
1500 inline bool operator!=(const wxString& s1, const wxCharBuffer& s2)
1501 { return (s1.Cmp((const char *)s2) != 0); }
1502 inline bool operator!=(const wxCharBuffer& s1, const wxString& s2)
1503 { return (s2.Cmp((const char *)s1) != 0); }
1504 #endif // wxUSE_UNICODE/!wxUSE_UNICODE
1505
1506 #if !wxUSE_STL
1507
1508 wxString WXDLLIMPEXP_BASE operator+(const wxString& string1, const wxString& string2);
1509 wxString WXDLLIMPEXP_BASE operator+(const wxString& string, wxChar ch);
1510 wxString WXDLLIMPEXP_BASE operator+(wxChar ch, const wxString& string);
1511 wxString WXDLLIMPEXP_BASE operator+(const wxString& string, const wxChar *psz);
1512 wxString WXDLLIMPEXP_BASE operator+(const wxChar *psz, const wxString& string);
1513
1514 #endif // !wxUSE_STL
1515
1516 #if wxUSE_UNICODE
1517 inline wxString operator+(const wxString& string, const wxWCharBuffer& buf)
1518 { return string + (const wchar_t *)buf; }
1519 inline wxString operator+(const wxWCharBuffer& buf, const wxString& string)
1520 { return (const wchar_t *)buf + string; }
1521 #else // !wxUSE_UNICODE
1522 inline wxString operator+(const wxString& string, const wxCharBuffer& buf)
1523 { return string + (const char *)buf; }
1524 inline wxString operator+(const wxCharBuffer& buf, const wxString& string)
1525 { return (const char *)buf + string; }
1526 #endif // wxUSE_UNICODE/!wxUSE_UNICODE
1527
1528 // ---------------------------------------------------------------------------
1529 // Implementation only from here until the end of file
1530 // ---------------------------------------------------------------------------
1531
1532 // don't pollute the library user's name space
1533 #undef wxASSERT_VALID_INDEX
1534
1535 #if wxUSE_STD_IOSTREAM
1536
1537 #include "wx/iosfwrap.h"
1538
1539 WXDLLIMPEXP_BASE wxSTD istream& operator>>(wxSTD istream&, wxString&);
1540 WXDLLIMPEXP_BASE wxSTD ostream& operator<<(wxSTD ostream&, const wxString&);
1541
1542 #endif // wxSTD_STRING_COMPATIBILITY
1543
1544 #endif // _WX_WXSTRINGH__
wxWidgets (Impactor)