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