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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 #if 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 <= 1100))
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() { GetStringData()->Unlock(); }
335
336 // overloaded assignment
337 // from another wxString
338 wxStringBase& operator=(const wxStringBase& stringSrc);
339 // from a character
340 wxStringBase& operator=(wxChar ch);
341 // from a C string
342 wxStringBase& operator=(const wxChar *psz);
343
344 // return the length of the string
345 size_type size() const { return GetStringData()->nDataLength; }
346 // return the length of the string
347 size_type length() const { return size(); }
348 // return the maximum size of the string
349 size_type max_size() const { return wxSTRING_MAXLEN; }
350 // resize the string, filling the space with c if c != 0
351 void resize(size_t nSize, wxChar ch = wxT('\0'));
352 // delete the contents of the string
353 void clear() { erase(0, npos); }
354 // returns true if the string is empty
355 bool empty() const { return size() == 0; }
356 // inform string about planned change in size
357 void reserve(size_t sz) { Alloc(sz); }
358 size_type capacity() const { return GetStringData()->nAllocLength; }
359
360 // lib.string.access
361 // return the character at position n
362 value_type at(size_type n) const
363 { wxASSERT_VALID_INDEX( n ); return m_pchData[n]; }
364 value_type operator[](size_type n) const { return at(n); }
365 // returns the writable character at position n
366 reference at(size_type n)
367 { wxASSERT_VALID_INDEX( n ); CopyBeforeWrite(); return m_pchData[n]; }
368 reference operator[](size_type n)
369 { wxASSERT_VALID_INDEX( n ); CopyBeforeWrite(); return m_pchData[n]; }
370
371 // lib.string.modifiers
372 // append elements str[pos], ..., str[pos+n]
373 wxStringBase& append(const wxStringBase& str, size_t pos, size_t n)
374 {
375 wxASSERT(pos <= str.length());
376 ConcatSelf(n, str.c_str() + pos, str.length() - pos);
377 return *this;
378 }
379 // append a string
380 wxStringBase& append(const wxStringBase& str)
381 { ConcatSelf(str.length(), str.c_str()); return *this; }
382 // append first n (or all if n == npos) characters of sz
383 wxStringBase& append(const wxChar *sz)
384 { ConcatSelf(wxStrlen(sz), sz); return *this; }
385 wxStringBase& append(const wxChar *sz, size_t n)
386 { ConcatSelf(n, sz); return *this; }
387 // append n copies of ch
388 wxStringBase& append(size_t n, wxChar ch);
389 // append from first to last
390 wxStringBase& append(const_iterator first, const_iterator last)
391 { ConcatSelf(last - first, first); return *this; }
392
393 // same as `this_string = str'
394 wxStringBase& assign(const wxStringBase& str)
395 { return *this = str; }
396 // same as ` = str[pos..pos + n]
397 wxStringBase& assign(const wxStringBase& str, size_t pos, size_t n)
398 { clear(); return append(str, pos, n); }
399 // same as `= first n (or all if n == npos) characters of sz'
400 wxStringBase& assign(const wxChar *sz)
401 { clear(); return append(sz, wxStrlen(sz)); }
402 wxStringBase& assign(const wxChar *sz, size_t n)
403 { clear(); return append(sz, n); }
404 // same as `= n copies of ch'
405 wxStringBase& assign(size_t n, wxChar ch)
406 { clear(); return append(n, ch); }
407 // assign from first to last
408 wxStringBase& assign(const_iterator first, const_iterator last)
409 { clear(); return append(first, last); }
410
411 // first valid index position
412 const_iterator begin() const { return m_pchData; }
413 // position one after the last valid one
414 const_iterator end() const { return m_pchData + length(); }
415
416 // first valid index position
417 iterator begin() { CopyBeforeWrite(); return m_pchData; }
418 // position one after the last valid one
419 iterator end() { CopyBeforeWrite(); return m_pchData + length(); }
420
421 // insert another string
422 wxStringBase& insert(size_t nPos, const wxStringBase& str)
423 {
424 wxASSERT( str.GetStringData()->IsValid() );
425 return insert(nPos, str.c_str(), str.length());
426 }
427 // insert n chars of str starting at nStart (in str)
428 wxStringBase& insert(size_t nPos, const wxStringBase& str, size_t nStart, size_t n)
429 {
430 wxASSERT( str.GetStringData()->IsValid() );
431 wxASSERT( nStart < str.length() );
432 size_t strLen = str.length() - nStart;
433 n = strLen < n ? strLen : n;
434 return insert(nPos, str.c_str() + nStart, n);
435 }
436 // insert first n (or all if n == npos) characters of sz
437 wxStringBase& insert(size_t nPos, const wxChar *sz, size_t n = npos);
438 // insert n copies of ch
439 wxStringBase& insert(size_t nPos, size_t n, wxChar ch)
440 { return insert(nPos, wxStringBase(n, ch)); }
441 iterator insert(iterator it, wxChar ch)
442 { size_t idx = it - begin(); insert(idx, 1, ch); return begin() + idx; }
443 void insert(iterator it, const_iterator first, const_iterator last)
444 { insert(it - begin(), first, last - first); }
445 void insert(iterator it, size_type n, wxChar ch)
446 { insert(it - begin(), n, ch); }
447
448 // delete characters from nStart to nStart + nLen
449 wxStringBase& erase(size_type pos = 0, size_type n = npos);
450 iterator erase(iterator first, iterator last)
451 {
452 size_t idx = first - begin();
453 erase(idx, last - first);
454 return begin() + idx;
455 }
456 iterator erase(iterator first);
457
458 // explicit conversion to C string (use this with printf()!)
459 const wxChar* c_str() const { return m_pchData; }
460 const wxChar* data() const { return m_pchData; }
461
462 // replaces the substring of length nLen starting at nStart
463 wxStringBase& replace(size_t nStart, size_t nLen, const wxChar* sz);
464 // replaces the substring of length nLen starting at nStart
465 wxStringBase& replace(size_t nStart, size_t nLen, const wxStringBase& str)
466 { return replace(nStart, nLen, str.c_str()); }
467 // replaces the substring with nCount copies of ch
468 wxStringBase& replace(size_t nStart, size_t nLen, size_t nCount, wxChar ch);
469 // replaces a substring with another substring
470 wxStringBase& replace(size_t nStart, size_t nLen,
471 const wxStringBase& str, size_t nStart2, size_t nLen2);
472 // replaces the substring with first nCount chars of sz
473 wxStringBase& replace(size_t nStart, size_t nLen,
474 const wxChar* sz, size_t nCount);
475 wxStringBase& replace(iterator first, iterator last, const_pointer s)
476 { return replace(first - begin(), last - first, s); }
477 wxStringBase& replace(iterator first, iterator last, const_pointer s,
478 size_type n)
479 { return replace(first - begin(), last - first, s, n); }
480 wxStringBase& replace(iterator first, iterator last, const wxStringBase& s)
481 { return replace(first - begin(), last - first, s); }
482 wxStringBase& replace(iterator first, iterator last, size_type n, wxChar c)
483 { return replace(first - begin(), last - first, n, c); }
484 wxStringBase& replace(iterator first, iterator last,
485 const_iterator first1, const_iterator last1)
486 { return replace(first - begin(), last - first, first1, last1 - first1); }
487
488 // swap two strings
489 void swap(wxStringBase& str);
490
491 // All find() functions take the nStart argument which specifies the
492 // position to start the search on, the default value is 0. All functions
493 // return npos if there were no match.
494
495 // find a substring
496 size_t find(const wxStringBase& str, size_t nStart = 0) const;
497
498 // VC++ 1.5 can't cope with this syntax.
499 #if !defined(__VISUALC__) || defined(__WIN32__)
500 // find first n characters of sz
501 size_t find(const wxChar* sz, size_t nStart = 0, size_t n = npos) const;
502 #endif // VC++ 1.5
503
504 // find the first occurence of character ch after nStart
505 size_t find(wxChar ch, size_t nStart = 0) const;
506
507 // rfind() family is exactly like find() but works right to left
508
509 // as find, but from the end
510 size_t rfind(const wxStringBase& str, size_t nStart = npos) const;
511
512 // VC++ 1.5 can't cope with this syntax.
513 // as find, but from the end
514 size_t rfind(const wxChar* sz, size_t nStart = npos,
515 size_t n = npos) const;
516 // as find, but from the end
517 size_t rfind(wxChar ch, size_t nStart = npos) const;
518
519 // find first/last occurence of any character in the set
520
521 // as strpbrk() but starts at nStart, returns npos if not found
522 size_t find_first_of(const wxStringBase& str, size_t nStart = 0) const
523 { return find_first_of(str.c_str(), nStart); }
524 // same as above
525 size_t find_first_of(const wxChar* sz, size_t nStart = 0) const;
526 size_t find_first_of(const wxChar* sz, size_t nStart, size_t n) const;
527 // same as find(char, size_t)
528 size_t find_first_of(wxChar c, size_t nStart = 0) const
529 { return find(c, nStart); }
530 // find the last (starting from nStart) char from str in this string
531 size_t find_last_of (const wxStringBase& str, size_t nStart = npos) const
532 { return find_last_of(str.c_str(), nStart); }
533 // same as above
534 size_t find_last_of (const wxChar* sz, size_t nStart = npos) const;
535 size_t find_last_of(const wxChar* sz, size_t nStart, size_t n) const;
536 // same as above
537 size_t find_last_of(wxChar c, size_t nStart = npos) const
538 { return rfind(c, nStart); }
539
540 // find first/last occurence of any character not in the set
541
542 // as strspn() (starting from nStart), returns npos on failure
543 size_t find_first_not_of(const wxStringBase& str, size_t nStart = 0) const
544 { return find_first_not_of(str.c_str(), nStart); }
545 // same as above
546 size_t find_first_not_of(const wxChar* sz, size_t nStart = 0) const;
547 size_t find_first_not_of(const wxChar* sz, size_t nStart, size_t n) const;
548 // same as above
549 size_t find_first_not_of(wxChar ch, size_t nStart = 0) const;
550 // as strcspn()
551 size_t find_last_not_of(const wxStringBase& str, size_t nStart = npos) const
552 { return find_last_not_of(str.c_str(), nStart); }
553 // same as above
554 size_t find_last_not_of(const wxChar* sz, size_t nStart = npos) const;
555 size_t find_last_not_of(const wxChar* sz, size_t nStart, size_t n) 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)