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