projects / wxWidgets.git / blame
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1 | /////////////////////////////////////////////////////////////////////////////// |
| 2 | // Name: dynarray.cpp | |
| 3 | // Purpose: implementation of wxBaseArray class | |
| 4 | // Author: Vadim Zeitlin | |
| 3bfa4402 | 5 | // Modified by: |
| c801d85f KB |
6 | // Created: 12.09.97 |
| 7 | // RCS-ID: $Id$ | |
| 8 | // Copyright: (c) 1998 Vadim Zeitlin <zeitlin@dptmaths.ens-cachan.fr> | |
| 55d99c7a | 9 | // Licence: wxWindows licence |
| c801d85f KB |
10 | /////////////////////////////////////////////////////////////////////////////// |
| 11 | ||
| 12 | // ============================================================================ | |
| 13 | // headers | |
| 14 | // ============================================================================ | |
| 15 | ||
| 14f355c2 | 16 | #if defined(__GNUG__) && !defined(NO_GCC_PRAGMA) |
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17 | #pragma implementation "dynarray.h" |
| 18 | #endif | |
| 19 | ||
| 3096bd2f | 20 | #include "wx/wxprec.h" |
| c801d85f KB |
21 | |
| 22 | #ifdef __BORLANDC__ | |
| 23 | #pragma hdrstop | |
| 24 | #endif | |
| 25 | ||
| 26 | #include "wx/dynarray.h" | |
| 3096bd2f | 27 | #include "wx/intl.h" |
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28 | |
| 29 | #include <stdlib.h> | |
| 3bfa4402 | 30 | #include <string.h> // for memmove |
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31 | |
| 32 | #ifndef max | |
| 33 | #define max(a, b) (((a) > (b)) ? (a) : (b)) | |
| 34 | #endif | |
| 35 | ||
| acf88ae6 VZ |
36 | // we cast the value to long from which we cast it to void * in IndexForInsert: |
| 37 | // this can't work if the pointers are not big enough | |
| 38 | wxCOMPILE_TIME_ASSERT( sizeof(long) <= sizeof(void *), | |
| 39 | wxArraySizeOfPtrLessSizeOfLong ); // < 32 symbols | |
| 40 | ||
| c801d85f KB |
41 | // ============================================================================ |
| 42 | // constants | |
| 43 | // ============================================================================ | |
| 44 | ||
| 45 | // size increment = max(50% of current size, ARRAY_MAXSIZE_INCREMENT) | |
| 46 | #define ARRAY_MAXSIZE_INCREMENT 4096 | |
| 47 | ||
| 48 | // ============================================================================ | |
| 49 | // implementation | |
| 50 | // ============================================================================ | |
| 51 | ||
| 52 | // ---------------------------------------------------------------------------- | |
| 5a1cad6e | 53 | // wxBaseArray - dynamic array of 'T's |
| c801d85f KB |
54 | // ---------------------------------------------------------------------------- |
| 55 | ||
| df5168c4 MB |
56 | #define _WX_DEFINE_BASEARRAY_COMMON(T, name) \ |
| 57 | /* searches the array for an item (forward or backwards) */ \ | |
| 58 | int name::Index(T lItem, bool bFromEnd) const \ | |
| 59 | { \ | |
| 60 | if ( bFromEnd ) { \ | |
| 61 | if ( size() > 0 ) { \ | |
| 62 | size_t n = size(); \ | |
| 63 | do { \ | |
| 64 | if ( (*this)[--n] == lItem ) \ | |
| 65 | return n; \ | |
| 66 | } \ | |
| 67 | while ( n != 0 ); \ | |
| 68 | } \ | |
| 69 | } \ | |
| 70 | else { \ | |
| 71 | for( size_t n = 0; n < size(); n++ ) { \ | |
| 72 | if( (*this)[n] == lItem ) \ | |
| 73 | return n; \ | |
| 74 | } \ | |
| 75 | } \ | |
| 76 | \ | |
| 77 | return wxNOT_FOUND; \ | |
| 78 | } \ | |
| 79 | \ | |
| 80 | /* add item assuming the array is sorted with fnCompare function */ \ | |
| 6992d326 | 81 | size_t name::Add(T lItem, CMPFUNC fnCompare) \ |
| df5168c4 | 82 | { \ |
| 6992d326 MB |
83 | size_t idx = IndexForInsert(lItem, fnCompare); \ |
| 84 | Insert(lItem, idx); \ | |
| 85 | return idx; \ | |
| 86 | } | |
| df5168c4 MB |
87 | |
| 88 | #if wxUSE_STL | |
| 89 | ||
| 90 | #define _WX_DEFINE_BASEARRAY_NOCOMMON(T, name) \ | |
| 91 | size_t name::IndexForInsert(T lItem, CMPFUNC fnCompare) const \ | |
| 92 | { \ | |
| f700f98c | 93 | Predicate p((SCMPFUNC)fnCompare); \ |
| df5168c4 MB |
94 | const_iterator it = std::lower_bound(begin(), end(), lItem, p); \ |
| 95 | return it - begin(); \ | |
| 96 | } \ | |
| 97 | \ | |
| 98 | int name::Index(T lItem, CMPFUNC fnCompare) const \ | |
| 99 | { \ | |
| f700f98c MB |
100 | Predicate p((SCMPFUNC)fnCompare); \ |
| 101 | const_iterator it = std::lower_bound(begin(), end(), lItem, p); \ | |
| 102 | return (it != end() && \ | |
| 103 | p(lItem, *it)) ? (int)(it - begin()) : wxNOT_FOUND; \ | |
| df5168c4 MB |
104 | } \ |
| 105 | \ | |
| 106 | void name::Shrink() \ | |
| 107 | { \ | |
| 108 | name tmp(*this); \ | |
| 109 | swap(tmp); \ | |
| 110 | } | |
| 111 | ||
| 112 | #else // if !wxUSE_STL | |
| 113 | ||
| 114 | #define _WX_DEFINE_BASEARRAY_NOCOMMON(T, name) \ | |
| 5a1cad6e GD |
115 | /* ctor */ \ |
| 116 | name::name() \ | |
| 117 | { \ | |
| 118 | m_nSize = \ | |
| 119 | m_nCount = 0; \ | |
| 120 | m_pItems = (T *)NULL; \ | |
| 121 | } \ | |
| 122 | \ | |
| 123 | /* copy ctor */ \ | |
| 124 | name::name(const name& src) \ | |
| 125 | { \ | |
| 126 | m_nSize = /* not src.m_nSize to save memory */ \ | |
| 127 | m_nCount = src.m_nCount; \ | |
| 128 | \ | |
| 129 | if ( m_nSize != 0 ) { \ | |
| 130 | m_pItems = new T[m_nSize]; \ | |
| 131 | /* only copy if allocation succeeded */ \ | |
| 132 | if ( m_pItems ) { \ | |
| 133 | memcpy(m_pItems, src.m_pItems, m_nCount*sizeof(T)); \ | |
| 134 | } \ | |
| 135 | else { \ | |
| 136 | m_nSize = 0; \ | |
| 137 | } \ | |
| 138 | } \ | |
| 139 | else \ | |
| 140 | m_pItems = (T *) NULL; \ | |
| 141 | } \ | |
| 142 | \ | |
| 143 | /* assignment operator */ \ | |
| 144 | name& name::operator=(const name& src) \ | |
| 145 | { \ | |
| 146 | wxDELETEA(m_pItems); \ | |
| 147 | \ | |
| 148 | m_nSize = /* not src.m_nSize to save memory */ \ | |
| 149 | m_nCount = src.m_nCount; \ | |
| 150 | \ | |
| 151 | if ( m_nSize != 0 ){ \ | |
| 152 | m_pItems = new T[m_nSize]; \ | |
| 153 | /* only copy if allocation succeeded */ \ | |
| 154 | if ( m_pItems ) { \ | |
| 155 | memcpy(m_pItems, src.m_pItems, m_nCount*sizeof(T)); \ | |
| 156 | } \ | |
| 157 | else { \ | |
| 158 | m_nSize = 0; \ | |
| 159 | } \ | |
| 160 | } \ | |
| 161 | else \ | |
| 162 | m_pItems = (T *) NULL; \ | |
| 163 | \ | |
| 164 | return *this; \ | |
| 165 | } \ | |
| 166 | \ | |
| 2abb9d2f VZ |
167 | /* allocate new buffer of the given size and move our data to it */ \ |
| 168 | bool name::Realloc(size_t nSize) \ | |
| 169 | { \ | |
| 170 | T *pNew = new T[nSize]; \ | |
| 171 | /* only grow if allocation succeeded */ \ | |
| 172 | if ( !pNew ) \ | |
| 173 | return false; \ | |
| 174 | \ | |
| 175 | m_nSize = nSize; \ | |
| 176 | /* copy data to new location */ \ | |
| 177 | memcpy(pNew, m_pItems, m_nCount*sizeof(T)); \ | |
| 178 | delete [] m_pItems; \ | |
| 179 | m_pItems = pNew; \ | |
| 180 | \ | |
| 181 | return true; \ | |
| 182 | } \ | |
| 183 | \ | |
| 5a1cad6e | 184 | /* grow the array */ \ |
| 3b0b5f13 | 185 | void name::Grow(size_t nIncrement) \ |
| 5a1cad6e GD |
186 | { \ |
| 187 | /* only do it if no more place */ \ | |
| 2b5f62a0 | 188 | if( (m_nCount == m_nSize) || ((m_nSize - m_nCount) < nIncrement) ) { \ |
| 5a1cad6e | 189 | if( m_nSize == 0 ) { \ |
| a1db4ad4 SN |
190 | /* was empty, determine initial size */ \ |
| 191 | size_t size = WX_ARRAY_DEFAULT_INITIAL_SIZE; \ | |
| 192 | if (size < nIncrement) size = nIncrement; \ | |
| 193 | /* allocate some memory */ \ | |
| 194 | m_pItems = new T[size]; \ | |
| 5a1cad6e GD |
195 | /* only grow if allocation succeeded */ \ |
| 196 | if ( m_pItems ) { \ | |
| a1db4ad4 | 197 | m_nSize = size; \ |
| 5a1cad6e GD |
198 | } \ |
| 199 | } \ | |
| 200 | else \ | |
| 201 | { \ | |
| 3b0b5f13 VZ |
202 | /* add at least 50% but not too much */ \ |
| 203 | size_t ndefIncrement = m_nSize < WX_ARRAY_DEFAULT_INITIAL_SIZE \ | |
| 204 | ? WX_ARRAY_DEFAULT_INITIAL_SIZE : m_nSize >> 1; \ | |
| 205 | if ( ndefIncrement > ARRAY_MAXSIZE_INCREMENT ) \ | |
| 206 | ndefIncrement = ARRAY_MAXSIZE_INCREMENT; \ | |
| 207 | if ( nIncrement < ndefIncrement ) \ | |
| 208 | nIncrement = ndefIncrement; \ | |
| 2abb9d2f | 209 | Realloc(m_nSize + nIncrement); \ |
| 5a1cad6e GD |
210 | } \ |
| 211 | } \ | |
| 212 | } \ | |
| 213 | \ | |
| 2abb9d2f VZ |
214 | /* make sure that the array has at least count elements */ \ |
| 215 | void name::SetCount(size_t count, T defval) \ | |
| 216 | { \ | |
| 217 | if ( m_nSize < count ) \ | |
| 218 | { \ | |
| 219 | /* need to realloc memory: don't overallocate it here as if */ \ | |
| 220 | /* SetCount() is called, it probably means that the caller */ \ | |
| 221 | /* knows in advance how many elements there will be in the */ \ | |
| 222 | /* array and so it won't be necessary to realloc it later */ \ | |
| 223 | if ( !Realloc(count) ) \ | |
| 224 | { \ | |
| 225 | /* out of memory -- what can we do? */ \ | |
| 226 | return; \ | |
| 227 | } \ | |
| 228 | } \ | |
| 229 | \ | |
| 230 | /* add new elements if we extend the array */ \ | |
| 231 | while ( m_nCount < count ) \ | |
| 232 | { \ | |
| 233 | m_pItems[m_nCount++] = defval; \ | |
| 234 | } \ | |
| 235 | } \ | |
| 236 | \ | |
| 5a1cad6e GD |
237 | /* dtor */ \ |
| 238 | name::~name() \ | |
| 239 | { \ | |
| 240 | wxDELETEA(m_pItems); \ | |
| 241 | } \ | |
| 242 | \ | |
| 243 | /* clears the list */ \ | |
| 244 | void name::Clear() \ | |
| 245 | { \ | |
| 246 | m_nSize = \ | |
| 247 | m_nCount = 0; \ | |
| 248 | \ | |
| 249 | wxDELETEA(m_pItems); \ | |
| 250 | } \ | |
| 251 | \ | |
| 252 | /* pre-allocates memory (frees the previous data!) */ \ | |
| 253 | void name::Alloc(size_t nSize) \ | |
| 254 | { \ | |
| 255 | /* only if old buffer was not big enough */ \ | |
| 256 | if ( nSize > m_nSize ) { \ | |
| 257 | wxDELETEA(m_pItems); \ | |
| 258 | m_nSize = 0; \ | |
| 259 | m_pItems = new T[nSize]; \ | |
| 260 | /* only alloc if allocation succeeded */ \ | |
| 261 | if ( m_pItems ) { \ | |
| 262 | m_nSize = nSize; \ | |
| 263 | } \ | |
| 264 | } \ | |
| 265 | \ | |
| 266 | m_nCount = 0; \ | |
| 267 | } \ | |
| 268 | \ | |
| 269 | /* minimizes the memory usage by freeing unused memory */ \ | |
| 270 | void name::Shrink() \ | |
| 271 | { \ | |
| 272 | /* only do it if we have some memory to free */ \ | |
| 273 | if( m_nCount < m_nSize ) { \ | |
| 274 | /* allocates exactly as much memory as we need */ \ | |
| 275 | T *pNew = new T[m_nCount]; \ | |
| 276 | /* only shrink if allocation succeeded */ \ | |
| 277 | if ( pNew ) { \ | |
| 278 | /* copy data to new location */ \ | |
| 279 | memcpy(pNew, m_pItems, m_nCount*sizeof(T)); \ | |
| 280 | delete [] m_pItems; \ | |
| 281 | m_pItems = pNew; \ | |
| 79e929e7 VZ |
282 | \ |
| 283 | /* update the size of the new block */ \ | |
| 284 | m_nSize = m_nCount; \ | |
| 5a1cad6e | 285 | } \ |
| 79e929e7 | 286 | /* else: don't do anything, better keep old memory block! */ \ |
| 5a1cad6e GD |
287 | } \ |
| 288 | } \ | |
| 289 | \ | |
| df5168c4 MB |
290 | /* add item at the end */ \ |
| 291 | void name::Add(T lItem, size_t nInsert) \ | |
| 5a1cad6e | 292 | { \ |
| df5168c4 MB |
293 | if (nInsert == 0) \ |
| 294 | return; \ | |
| 295 | Grow(nInsert); \ | |
| 296 | for (size_t i = 0; i < nInsert; i++) \ | |
| 297 | m_pItems[m_nCount++] = lItem; \ | |
| 298 | } \ | |
| 5a1cad6e | 299 | \ |
| df5168c4 MB |
300 | /* add item at the given position */ \ |
| 301 | void name::Insert(T lItem, size_t nIndex, size_t nInsert) \ | |
| 302 | { \ | |
| 303 | wxCHECK_RET( nIndex <= m_nCount, wxT("bad index in wxArray::Insert") ); \ | |
| 304 | wxCHECK_RET( m_nCount <= m_nCount + nInsert, \ | |
| 305 | wxT("array size overflow in wxArray::Insert") ); \ | |
| 306 | \ | |
| 307 | if (nInsert == 0) \ | |
| 308 | return; \ | |
| 309 | Grow(nInsert); \ | |
| 310 | \ | |
| 311 | memmove(&m_pItems[nIndex + nInsert], &m_pItems[nIndex], \ | |
| 312 | (m_nCount - nIndex)*sizeof(T)); \ | |
| 313 | for (size_t i = 0; i < nInsert; i++) \ | |
| 314 | m_pItems[nIndex + i] = lItem; \ | |
| 315 | m_nCount += nInsert; \ | |
| 5a1cad6e GD |
316 | } \ |
| 317 | \ | |
| 318 | /* search for a place to insert item into sorted array (binary search) */ \ | |
| 319 | size_t name::IndexForInsert(T lItem, CMPFUNC fnCompare) const \ | |
| 320 | { \ | |
| 321 | size_t i, \ | |
| 322 | lo = 0, \ | |
| 323 | hi = m_nCount; \ | |
| 324 | int res; \ | |
| 325 | \ | |
| 326 | while ( lo < hi ) { \ | |
| 327 | i = (lo + hi)/2; \ | |
| 328 | \ | |
| acf88ae6 VZ |
329 | res = (*fnCompare)((const void *)(long)lItem, \ |
| 330 | (const void *)(long)(m_pItems[i])); \ | |
| 5a1cad6e GD |
331 | if ( res < 0 ) \ |
| 332 | hi = i; \ | |
| 333 | else if ( res > 0 ) \ | |
| 334 | lo = i + 1; \ | |
| 335 | else { \ | |
| 336 | lo = i; \ | |
| 337 | break; \ | |
| 338 | } \ | |
| 339 | } \ | |
| 340 | \ | |
| 341 | return lo; \ | |
| 342 | } \ | |
| 343 | \ | |
| 344 | /* search for an item in a sorted array (binary search) */ \ | |
| 345 | int name::Index(T lItem, CMPFUNC fnCompare) const \ | |
| 346 | { \ | |
| 347 | size_t n = IndexForInsert(lItem, fnCompare); \ | |
| 348 | \ | |
| bb793b0c | 349 | return (n >= m_nCount || \ |
| 4365da58 | 350 | (*fnCompare)((const void *)(long)lItem, \ |
| bb793b0c VZ |
351 | ((const void *)(long)m_pItems[n]))) ? wxNOT_FOUND \ |
| 352 | : (int)n; \ | |
| 5a1cad6e GD |
353 | } \ |
| 354 | \ | |
| 5a1cad6e | 355 | /* removes item from array (by index) */ \ |
| 3b0b5f13 | 356 | void name::RemoveAt(size_t nIndex, size_t nRemove) \ |
| 5a1cad6e | 357 | { \ |
| 3b0b5f13 VZ |
358 | wxCHECK_RET( nIndex < m_nCount, wxT("bad index in wxArray::RemoveAt") ); \ |
| 359 | wxCHECK_RET( nIndex + nRemove <= m_nCount, \ | |
| 360 | wxT("removing too many elements in wxArray::RemoveAt") ); \ | |
| 5a1cad6e | 361 | \ |
| 3b0b5f13 VZ |
362 | memmove(&m_pItems[nIndex], &m_pItems[nIndex + nRemove], \ |
| 363 | (m_nCount - nIndex - nRemove)*sizeof(T)); \ | |
| 364 | m_nCount -= nRemove; \ | |
| 5a1cad6e GD |
365 | } \ |
| 366 | \ | |
| 367 | /* removes item from array (by value) */ \ | |
| 368 | void name::Remove(T lItem) \ | |
| 369 | { \ | |
| 370 | int iIndex = Index(lItem); \ | |
| 371 | \ | |
| 372 | wxCHECK_RET( iIndex != wxNOT_FOUND, \ | |
| 373 | wxT("removing inexistent item in wxArray::Remove") ); \ | |
| 374 | \ | |
| 375 | RemoveAt((size_t)iIndex); \ | |
| 376 | } \ | |
| 377 | \ | |
| 378 | /* sort array elements using passed comparaison function */ \ | |
| 379 | void name::Sort(CMPFUNC fCmp) \ | |
| 380 | { \ | |
| 381 | qsort(m_pItems, m_nCount, sizeof(T), fCmp); \ | |
| 360b63dd MB |
382 | } \ |
| 383 | \ | |
| 384 | void name::assign(const_iterator first, const_iterator last) \ | |
| 385 | { \ | |
| 386 | clear(); \ | |
| 387 | reserve(last - first); \ | |
| 388 | for(; first != last; ++first) \ | |
| 389 | push_back(*first); \ | |
| 390 | } \ | |
| 391 | \ | |
| 392 | void name::assign(size_type n, const_reference v) \ | |
| 393 | { \ | |
| 394 | clear(); \ | |
| 395 | reserve(n); \ | |
| 396 | for( size_type i = 0; i < n; ++i ) \ | |
| 397 | push_back(v); \ | |
| 398 | } \ | |
| 399 | \ | |
| 400 | void name::insert(iterator it, const_iterator first, const_iterator last) \ | |
| 401 | { \ | |
| 402 | size_t nInsert = last - first, nIndex = it - begin(); \ | |
| 403 | if (nInsert == 0) \ | |
| 404 | return; \ | |
| 405 | Grow(nInsert); \ | |
| 406 | \ | |
| 407 | memmove(&m_pItems[nIndex + nInsert], &m_pItems[nIndex], \ | |
| 408 | (m_nCount - nIndex)*sizeof(T)); \ | |
| 409 | for (size_t i = 0; i < nInsert; ++i, ++it, ++first) \ | |
| 410 | *it = *first; \ | |
| 411 | m_nCount += nInsert; \ | |
| c801d85f KB |
412 | } |
| 413 | ||
| df5168c4 MB |
414 | #endif |
| 415 | ||
| 416 | #define _WX_DEFINE_BASEARRAY(T, name) \ | |
| 417 | _WX_DEFINE_BASEARRAY_COMMON(T, name) \ | |
| 418 | _WX_DEFINE_BASEARRAY_NOCOMMON(T, name) | |
| 419 | ||
| f1322419 VZ |
420 | _WX_DEFINE_BASEARRAY(const void *, wxBaseArrayPtrVoid) |
| 421 | _WX_DEFINE_BASEARRAY(short, wxBaseArrayShort) | |
| 422 | _WX_DEFINE_BASEARRAY(int, wxBaseArrayInt) | |
| 423 | _WX_DEFINE_BASEARRAY(long, wxBaseArrayLong) | |
| 360b63dd | 424 | _WX_DEFINE_BASEARRAY(double, wxBaseArrayDouble) |
| c801d85f | 425 | |
| df5168c4 MB |
426 | #if wxUSE_STL |
| 427 | #include "wx/arrstr.h" | |
| 428 | ||
| 2da2f941 MB |
429 | #include "wx/beforestd.h" |
| 430 | #include <functional> | |
| 431 | #include "wx/afterstd.h" | |
| 432 | ||
| 433 | _WX_DEFINE_BASEARRAY(wxString, wxBaseArrayStringBase); | |
| 434 | ||
| a1d48124 | 435 | int wxArrayString::Index(const wxChar* sz, bool bCase, bool WXUNUSED(bFromEnd)) const |
| 2da2f941 MB |
436 | { |
| 437 | wxArrayString::const_iterator it; | |
| 438 | ||
| 439 | if (bCase) | |
| 440 | it = std::find_if(begin(), end(), | |
| 441 | std::not1(std::bind2nd(std::ptr_fun(wxStrcmp), sz))); | |
| 442 | else | |
| 443 | it = std::find_if(begin(), end(), | |
| 444 | std::not1(std::bind2nd(std::ptr_fun(wxStricmp), sz))); | |
| 445 | ||
| 446 | return it == end() ? wxNOT_FOUND : it - begin(); | |
| 447 | } | |
| 448 | ||
| 449 | class wxStringCompareLess | |
| 450 | { | |
| 451 | public: | |
| 452 | typedef int (wxCMPFUNC_CONV * fnc)(const wxChar*, const wxChar*); | |
| 453 | public: | |
| 454 | wxStringCompareLess(fnc f) : m_f(f) { } | |
| 455 | bool operator()(const wxChar* s1, const wxChar* s2) | |
| 456 | { return m_f(s1, s2) < 0; } | |
| 457 | private: | |
| 458 | fnc m_f; | |
| 459 | }; | |
| 460 | ||
| a1d48124 | 461 | int wxSortedArrayString::Index(const wxChar* sz, bool bCase, bool WXUNUSED(bFromEnd)) const |
| 2da2f941 MB |
462 | { |
| 463 | wxSortedArrayString::const_iterator it; | |
| 464 | ||
| 465 | if (bCase) | |
| 466 | it = std::lower_bound(begin(), end(), sz, | |
| 467 | wxStringCompareLess(wxStrcmp)); | |
| 468 | else | |
| 469 | it = std::lower_bound(begin(), end(), sz, | |
| 470 | wxStringCompareLess(wxStricmp)); | |
| 471 | ||
| 472 | if (it == end() || (bCase ? wxStrcmp : wxStricmp)(it->c_str(), sz) != 0) | |
| 473 | return wxNOT_FOUND; | |
| 474 | return it - begin(); | |
| 475 | } | |
| df5168c4 MB |
476 | |
| 477 | #endif |