src/html/helpdata.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        helpdata.cpp
   3 // Purpose:     wxHtmlHelpData
   4 // Notes:       Based on htmlhelp.cpp, implementing a monolithic
   5 //              HTML Help controller class,  by Vaclav Slavik
   6 // Author:      Harm van der Heijden and Vaclav Slavik
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) Harm van der Heijden and Vaclav Slavik
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 #ifdef __GNUG__
  13 #pragma implementation
  14 #endif
  15
  16 // For compilers that support precompilation, includes "wx.h".
  17 #include "wx/wxprec.h"
  18
  19 #ifdef __BORLANDC__
  20 #pragma hdrstop
  21 #endif
  22
  23 #include "wx/defs.h"
  24
  25 #if wxUSE_HTML
  26
  27 #ifndef WXPRECOMP
  28 #include "wx/wx.h"
  29 #endif
  30
  31 #include "wx/html/helpdata.h"
  32 #include "wx/tokenzr.h"
  33 #include "wx/wfstream.h"
  34 #include "wx/busyinfo.h"
  35 #include "wx/html/htmlpars.h"
  36 #include "wx/html/htmldefs.h"
  37
  38 #include "wx/arrimpl.cpp"
  39 WX_DEFINE_OBJARRAY(wxHtmlBookRecArray)
  40
  41 //-----------------------------------------------------------------------------
  42 // static helper functions
  43 //-----------------------------------------------------------------------------
  44
  45 // Reads one line, stores it into buf and returns pointer to new line or NULL.
  46 static char* ReadLine(char *line, char *buf)
  47 {
  48     char *writeptr = buf, *readptr = line;
  49
  50     while (*readptr != 0 && *readptr != '\r' && *readptr != '\n') *(writeptr++) = *(readptr++);
  51     *writeptr = 0;
  52     while (*readptr == '\r' || *readptr == '\n') readptr++;
  53     if (*readptr == 0) return NULL;
  54     else return readptr;
  55 }
  56
  57
  58 static wxString SafeFileName(const wxString& s)
  59 {
  60     wxString res = s;
  61     res.Replace(wxT(":"), wxT("_"), TRUE);
  62     res.Replace(wxT(" "), wxT("_"), TRUE);
  63     res.Replace(wxT("/"), wxT("_"), TRUE);
  64     res.Replace(wxT("\\"), wxT("_"), TRUE);
  65     res.Replace(wxT("#"), wxT("_"), TRUE);
  66     res.Replace(wxT("."), wxT("_"), TRUE);
  67     return res;
  68 }
  69
  70
  71 static int LINKAGEMODE IndexCompareFunc(const void *a, const void *b)
  72 {
  73     return wxStrcmp(((wxHtmlContentsItem*)a) -> m_Name, ((wxHtmlContentsItem*)b) -> m_Name);
  74 }
  75
  76
  77 //-----------------------------------------------------------------------------
  78 // HP_Parser
  79 //-----------------------------------------------------------------------------
  80
  81 class HP_Parser : public wxHtmlParser
  82 {
  83     public:
  84         void AddText(const char* WXUNUSED(text)) { }
  85         wxObject* GetProduct() { return NULL; }
  86 };
  87
  88
  89 //-----------------------------------------------------------------------------
  90 // HP_TagHandler
  91 //-----------------------------------------------------------------------------
  92
  93 class HP_TagHandler : public wxHtmlTagHandler
  94 {
  95     private:
  96         wxString m_Name, m_Page;
  97         int m_Level;
  98         int m_ID;
  99         int m_Index;
 100         wxHtmlContentsItem *m_Items;
 101         int m_ItemsCnt;
 102         wxHtmlBookRecord *m_Book;
 103
 104     public:
 105         HP_TagHandler(wxHtmlBookRecord *b) : wxHtmlTagHandler() {m_Book = b; m_Items = NULL; m_ItemsCnt = 0; m_Name = m_Page = wxEmptyString; m_Level = 0; }
 106         wxString GetSupportedTags() { return wxT("UL,OBJECT,PARAM"); }
 107         bool HandleTag(const wxHtmlTag& tag);
 108         void WriteOut(wxHtmlContentsItem*& array, int& size);
 109         void ReadIn(wxHtmlContentsItem* array, int size);
 110 };
 111
 112
 113 bool HP_TagHandler::HandleTag(const wxHtmlTag& tag)
 114 {
 115     if (tag.GetName() == wxT("UL")) {
 116         m_Level++;
 117         ParseInner(tag);
 118         m_Level--;
 119         return TRUE;
 120     }
 121     else if (tag.GetName() == wxT("OBJECT")) {
 122         m_Name = m_Page = wxEmptyString;
 123         ParseInner(tag);
 124         if (m_Page != wxEmptyString) {
 125             if (m_ItemsCnt % wxHTML_REALLOC_STEP == 0)
 126                 m_Items = (wxHtmlContentsItem*) realloc(m_Items, (m_ItemsCnt + wxHTML_REALLOC_STEP) * sizeof(wxHtmlContentsItem));
 127             m_Items[m_ItemsCnt].m_Level = m_Level;
 128             m_Items[m_ItemsCnt].m_ID = m_ID;
 129             m_Items[m_ItemsCnt].m_Page = new wxChar[m_Page.Length() + 1];
 130             wxStrcpy(m_Items[m_ItemsCnt].m_Page, m_Page.c_str());
 131             m_Items[m_ItemsCnt].m_Name = new wxChar [m_Name.Length() + 1];
 132             wxStrcpy(m_Items[m_ItemsCnt].m_Name, m_Name.c_str());
 133             m_Items[m_ItemsCnt].m_Book = m_Book;
 134             m_ItemsCnt++;
 135         }
 136         return TRUE;
 137     }
 138     else { // "PARAM"
 139         if (m_Name == wxEmptyString && tag.GetParam(wxT("NAME")) == wxT("Name")) m_Name = tag.GetParam(wxT("VALUE"));
 140         if (tag.GetParam(wxT("NAME")) == wxT("Local")) m_Page = tag.GetParam(wxT("VALUE"));
 141         if (tag.GetParam(wxT("NAME")) == wxT("ID")) tag.ScanParam(wxT("VALUE"), wxT("%i"), &m_ID);
 142         return FALSE;
 143     }
 144 }
 145
 146
 147
 148 void HP_TagHandler::WriteOut(wxHtmlContentsItem*& array, int& size)
 149 {
 150     array = m_Items;
 151     size = m_ItemsCnt;
 152     m_Items = NULL;
 153     m_ItemsCnt = 0;
 154 }
 155
 156 void HP_TagHandler::ReadIn(wxHtmlContentsItem* array, int size)
 157 {
 158     m_Items = array;
 159     m_ItemsCnt = size;
 160 }
 161
 162
 163
 164
 165 //-----------------------------------------------------------------------------
 166 // wxHtmlHelpData
 167 //-----------------------------------------------------------------------------
 168
 169 IMPLEMENT_DYNAMIC_CLASS(wxHtmlHelpData, wxObject)
 170
 171 wxHtmlHelpData::wxHtmlHelpData()
 172 {
 173     m_TempPath = wxEmptyString;
 174
 175     m_Contents = NULL;
 176     m_ContentsCnt = 0;
 177     m_Index = NULL;
 178     m_IndexCnt = 0;
 179 }
 180
 181 wxHtmlHelpData::~wxHtmlHelpData()
 182 {
 183     int i;
 184
 185     m_BookRecords.Empty();
 186     if (m_Contents) {
 187         for (i = 0; i < m_ContentsCnt; i++) {
 188             delete[] m_Contents[i].m_Page;
 189             delete[] m_Contents[i].m_Name;
 190         }
 191         free(m_Contents);
 192     }
 193     if (m_Index) {
 194         for (i = 0; i < m_IndexCnt; i++) {
 195             delete[] m_Index[i].m_Page;
 196             delete[] m_Index[i].m_Name;
 197         }
 198         free(m_Index);
 199     }
 200 }
 201
 202 bool wxHtmlHelpData::LoadMSProject(wxHtmlBookRecord *book, wxFileSystem& fsys, const wxString& indexfile, const wxString& contentsfile)
 203 {
 204     wxFSFile *f;
 205     char *buf;
 206     int sz;
 207     wxString string;
 208
 209     HP_Parser parser;
 210     HP_TagHandler *handler = new HP_TagHandler(book);
 211     parser.AddTagHandler(handler);
 212
 213     f = ( contentsfile.IsEmpty() ? 0 : fsys.OpenFile(contentsfile) );
 214     if (f) {
 215         sz = f -> GetStream() -> GetSize();
 216         buf = new char[sz + 1];
 217         buf[sz] = 0;
 218         f -> GetStream() -> Read(buf, sz);
 219         delete f;
 220         handler -> ReadIn(m_Contents, m_ContentsCnt);
 221         parser.Parse(buf);
 222         handler -> WriteOut(m_Contents, m_ContentsCnt);
 223         delete[] buf;
 224     }
 225
 226     f = ( indexfile.IsEmpty() ? 0 : fsys.OpenFile(indexfile) );
 227     if (f) {
 228         sz = f -> GetStream() -> GetSize();
 229         buf = new char[sz + 1];
 230         buf[sz] = 0;
 231         f -> GetStream() -> Read(buf, sz);
 232         delete f;
 233         handler -> ReadIn(m_Index, m_IndexCnt);
 234         parser.Parse(buf);
 235         handler -> WriteOut(m_Index, m_IndexCnt);
 236         delete[] buf;
 237     }
 238     return TRUE;
 239 }
 240
 241
 242 bool wxHtmlHelpData::LoadCachedBook(wxHtmlBookRecord *book, wxInputStream *f)
 243 {
 244     int i, st;
 245     int x;
 246
 247     /* load contents : */
 248
 249     f -> Read(&x, sizeof(x));
 250     st = m_ContentsCnt;
 251     m_ContentsCnt += x;
 252     m_Contents = (wxHtmlContentsItem*) realloc(m_Contents, (m_ContentsCnt / wxHTML_REALLOC_STEP + 1) * wxHTML_REALLOC_STEP * sizeof(wxHtmlContentsItem));
 253     for (i = st; i < m_ContentsCnt; i++) {
 254         f -> Read(&x, sizeof(x));
 255         m_Contents[i].m_Level = x;
 256         f -> Read(&x, sizeof(x));
 257         m_Contents[i].m_ID = x;
 258         f -> Read(&x, sizeof(x));
 259         m_Contents[i].m_Name = new wxChar[x];
 260         f -> Read(m_Contents[i].m_Name, x*sizeof(wxChar));
 261         f -> Read(&x, sizeof(x));
 262         m_Contents[i].m_Page = new wxChar[x];
 263         f -> Read(m_Contents[i].m_Page, x*sizeof(wxChar));
 264         m_Contents[i].m_Book = book;
 265     }
 266
 267     /* load index : */
 268
 269     f -> Read(&x, sizeof(x));
 270     st = m_IndexCnt;
 271     m_IndexCnt += x;
 272     m_Index = (wxHtmlContentsItem*) realloc(m_Index, (m_IndexCnt / wxHTML_REALLOC_STEP + 1) * wxHTML_REALLOC_STEP * sizeof(wxHtmlContentsItem));
 273     for (i = st; i < m_IndexCnt; i++) {
 274         f -> Read(&x, sizeof(x));
 275         m_Index[i].m_Name = new wxChar[x];
 276         f -> Read(m_Index[i].m_Name, x*sizeof(wxChar));
 277         f -> Read(&x, sizeof(x));
 278         m_Index[i].m_Page = new wxChar[x];
 279         f -> Read(m_Index[i].m_Page, x*sizeof(wxChar));
 280         m_Index[i].m_Book = book;
 281     }
 282     return TRUE;
 283 }
 284
 285
 286 bool wxHtmlHelpData::SaveCachedBook(wxHtmlBookRecord *book, wxOutputStream *f)
 287 {
 288     int i;
 289     int x;
 290
 291     /* save contents : */
 292
 293     x = 0;
 294     for (i = 0; i < m_ContentsCnt; i++) if (m_Contents[i].m_Book == book && m_Contents[i].m_Level > 0) x++;
 295     f -> Write(&x, sizeof(x));
 296     for (i = 0; i < m_ContentsCnt; i++) {
 297         if (m_Contents[i].m_Book != book || m_Contents[i].m_Level == 0) continue;
 298         x = m_Contents[i].m_Level;
 299         f -> Write(&x, sizeof(x));
 300         x = m_Contents[i].m_ID;
 301         f -> Write(&x, sizeof(x));
 302         x = wxStrlen(m_Contents[i].m_Name) + 1;
 303         f -> Write(&x, sizeof(x));
 304         f -> Write(m_Contents[i].m_Name, x*sizeof(wxChar));
 305         x = wxStrlen(m_Contents[i].m_Page) + 1;
 306         f -> Write(&x, sizeof(x));
 307         f -> Write(m_Contents[i].m_Page, x*sizeof(wxChar));
 308     }
 309
 310     /* save index : */
 311
 312     x = 0;
 313     for (i = 0; i < m_IndexCnt; i++) if (m_Index[i].m_Book == book && m_Index[i].m_Level > 0) x++;
 314     f -> Write(&x, sizeof(x));
 315     for (i = 0; i < m_IndexCnt; i++) {
 316         if (m_Index[i].m_Book != book || m_Index[i].m_Level == 0) continue;
 317         x = wxStrlen(m_Index[i].m_Name) + 1;
 318         f -> Write(&x, sizeof(x));
 319         f -> Write(m_Index[i].m_Name, x*sizeof(wxChar));
 320         x = wxStrlen(m_Index[i].m_Page) + 1;
 321         f -> Write(&x, sizeof(x));
 322         f -> Write(m_Index[i].m_Page, x*sizeof(wxChar));
 323     }
 324     return TRUE;
 325 }
 326
 327
 328 void wxHtmlHelpData::SetTempDir(const wxString& path)
 329 {
 330     if (path == wxEmptyString) m_TempPath = path;
 331     else {
 332         if (wxIsAbsolutePath(path)) m_TempPath = path;
 333         else m_TempPath = wxGetCwd() + "/" + path;
 334
 335         if (m_TempPath[m_TempPath.Length() - 1] != '/')
 336             m_TempPath << "/";
 337     }
 338 }
 339
 340
 341 bool wxHtmlHelpData::AddBookParam(const wxString& title, const wxString& contfile,
 342                                   const wxString& indexfile, const wxString& deftopic,
 343                                   const wxString& path)
 344 {
 345     wxFileSystem fsys;
 346     wxFSFile *fi;
 347     wxHtmlBookRecord *bookr;
 348     wxString safetitle;
 349
 350     if (! path.IsEmpty())
 351         fsys.ChangePathTo(path, TRUE);
 352
 353     bookr = new wxHtmlBookRecord(fsys.GetPath(), title, deftopic);
 354
 355     if (m_ContentsCnt % wxHTML_REALLOC_STEP == 0)
 356         m_Contents = (wxHtmlContentsItem*) realloc(m_Contents, (m_ContentsCnt + wxHTML_REALLOC_STEP) * sizeof(wxHtmlContentsItem));
 357     m_Contents[m_ContentsCnt].m_Level = 0;
 358     m_Contents[m_ContentsCnt].m_ID = 0;
 359     m_Contents[m_ContentsCnt].m_Page = new wxChar[deftopic.Length() + 1];
 360     wxStrcpy(m_Contents[m_ContentsCnt].m_Page, deftopic.c_str());
 361     m_Contents[m_ContentsCnt].m_Name = new wxChar [title.Length() + 1];
 362     wxStrcpy(m_Contents[m_ContentsCnt].m_Name, title.c_str());
 363     m_Contents[m_ContentsCnt].m_Book = bookr;
 364
 365     // store the contents index for later
 366     int cont_start = m_ContentsCnt++;
 367
 368     // Try to find cached binary versions:
 369     safetitle = SafeFileName(title);
 370     fi = fsys.OpenFile(safetitle + wxT(".cached"));
 371     if (fi == NULL) fi = fsys.OpenFile(m_TempPath + safetitle + wxT(".cached"));
 372     if ((fi == NULL) || (m_TempPath == wxEmptyString)) {
 373         LoadMSProject(bookr, fsys, indexfile, contfile);
 374         if (m_TempPath != wxEmptyString) {
 375             wxFileOutputStream *outs = new wxFileOutputStream(m_TempPath + safetitle + wxT(".cached"));
 376             SaveCachedBook(bookr, outs);
 377             delete outs;
 378         }
 379     } else {
 380         LoadCachedBook(bookr, fi -> GetStream());
 381         delete fi;
 382     }
 383
 384     // Now store the contents range
 385     bookr->SetContentsRange(cont_start, m_ContentsCnt);
 386
 387     m_BookRecords.Add(bookr);
 388     if (m_IndexCnt > 0)
 389         qsort(m_Index, m_IndexCnt, sizeof(wxHtmlContentsItem), IndexCompareFunc);
 390
 391     return TRUE;
 392 }
 393
 394
 395 bool wxHtmlHelpData::AddBook(const wxString& book)
 396 {
 397     if (book.Right(4).Lower() == wxT(".zip") ||
 398         book.Right(4).Lower() == wxT(".htb") /*html book*/)
 399
 400     {
 401         wxFileSystem fsys;
 402         wxString s;
 403         bool rt = FALSE;
 404
 405         s = fsys.FindFirst(book + wxT("#zip:") + wxT("*.hhp"), wxFILE);
 406         while (!s.IsEmpty())
 407         {
 408             if (AddBook(s)) rt = TRUE;
 409             s = fsys.FindNext();
 410         }
 411
 412         return rt;
 413     }
 414
 415
 416     else
 417     {
 418         wxFSFile *fi;
 419         wxFileSystem fsys;
 420         wxInputStream *s;
 421         wxString bookFull;
 422
 423         int sz;
 424         char *buff, *lineptr;
 425         char linebuf[300];
 426
 427         wxString title = _("noname"),
 428                          safetitle,
 429                          start = wxEmptyString,
 430                                  contents = wxEmptyString, index = wxEmptyString;
 431
 432         if (wxIsAbsolutePath(book)) bookFull = book;
 433         else bookFull = wxGetCwd() + "/" + book;
 434
 435         fi = fsys.OpenFile(bookFull);
 436         if (fi == NULL) return FALSE;
 437         fsys.ChangePathTo(bookFull);
 438         s = fi -> GetStream();
 439         sz = s -> GetSize();
 440         buff = new char[sz + 1];
 441         buff[sz] = 0;
 442         s -> Read(buff, sz);
 443         lineptr = buff;
 444         delete fi;
 445
 446         do {
 447             lineptr = ReadLine(lineptr, linebuf);
 448
 449             if (strstr(linebuf, "Title=") == linebuf)
 450                 title = linebuf + strlen("Title=");
 451             if (strstr(linebuf, "Default topic=") == linebuf)
 452                 start = linebuf + strlen("Default topic=");
 453             if (strstr(linebuf, "Index file=") == linebuf)
 454                 index = linebuf + strlen("Index file=");
 455             if (strstr(linebuf, "Contents file=") == linebuf)
 456                 contents = linebuf + strlen("Contents file=");
 457         } while (lineptr != NULL);
 458         delete[] buff;
 459
 460         return AddBookParam(title, contents, index, start, fsys.GetPath());
 461     }
 462 }
 463
 464 wxString wxHtmlHelpData::FindPageByName(const wxString& x)
 465 {
 466     int cnt;
 467     int i;
 468     wxFileSystem fsys;
 469     wxFSFile *f;
 470     wxString url(wxEmptyString);
 471
 472     /* 1. try to open given file: */
 473
 474     cnt = m_BookRecords.GetCount();
 475     for (i = 0; i < cnt; i++) {
 476         f = fsys.OpenFile(m_BookRecords[i].GetBasePath() + x);
 477         if (f) {
 478             url = m_BookRecords[i].GetBasePath() + x;
 479             delete f;
 480             return url;
 481         }
 482     }
 483
 484
 485     /* 2. try to find a book: */
 486
 487     for (i = 0; i < cnt; i++) {
 488         if (m_BookRecords[i].GetTitle() == x) {
 489             url = m_BookRecords[i].GetBasePath() + m_BookRecords[i].GetStart();
 490             return url;
 491         }
 492     }
 493
 494     /* 3. try to find in contents: */
 495
 496     cnt = m_ContentsCnt;
 497     for (i = 0; i < cnt; i++) {
 498         if (wxStrcmp(m_Contents[i].m_Name, x) == 0) {
 499             url = m_Contents[i].m_Book -> GetBasePath() + m_Contents[i].m_Page;
 500             return url;
 501         }
 502     }
 503
 504
 505     /* 4. try to find in index: */
 506
 507     cnt = m_IndexCnt;
 508     for (i = 0; i < cnt; i++) {
 509         if (wxStrcmp(m_Index[i].m_Name, x) == 0) {
 510             url = m_Index[i].m_Book -> GetBasePath() + m_Index[i].m_Page;
 511             return url;
 512         }
 513     }
 514
 515     return url;
 516 }
 517
 518 wxString wxHtmlHelpData::FindPageById(int id)
 519 {
 520     int i;
 521     wxString url(wxEmptyString);
 522
 523     for (i = 0; i < m_ContentsCnt; i++) {
 524         if (m_Contents[i].m_ID == id) {
 525             url = m_Contents[i].m_Book -> GetBasePath() + m_Contents[i].m_Page;
 526             return url;
 527         }
 528     }
 529
 530     return url;
 531 }
 532
 533 //----------------------------------------------------------------------------------
 534 // wxHtmlSearchStatus functions
 535 //----------------------------------------------------------------------------------
 536
 537 wxHtmlSearchStatus::wxHtmlSearchStatus(wxHtmlHelpData* data, const wxString& keyword,
 538                                        const wxString& book)
 539 {
 540     m_Data = data;
 541     m_Keyword = keyword;
 542     wxHtmlBookRecord* bookr = NULL;
 543     if (book != wxEmptyString) {
 544         // we have to search in a specific book. Find it first
 545         int i, cnt = data->m_BookRecords.GetCount();
 546         for (i = 0; i < cnt; i++)
 547             if (data->m_BookRecords[i].GetTitle() == book) {
 548                 bookr = &(data->m_BookRecords[i]);
 549                 m_CurIndex = bookr->GetContentsStart();
 550                 m_MaxIndex = bookr->GetContentsEnd();
 551                 break;
 552             }
 553         // check; we won't crash if the book doesn't exist, but it's Bad Anyway.
 554         wxASSERT(bookr);
 555     }
 556     if (! bookr) {
 557         // no book specified; search all books
 558         m_CurIndex = 0;
 559         m_MaxIndex = m_Data->m_ContentsCnt;
 560     }
 561     m_Engine.LookFor(keyword);
 562     m_Active = (m_CurIndex < m_MaxIndex);
 563     m_LastPage = wxEmptyString;
 564 }
 565
 566 bool wxHtmlSearchStatus::Search()
 567 {
 568     wxFileSystem fsys;
 569     wxFSFile *file;
 570     int i = m_CurIndex;  // shortcut
 571     bool found = FALSE;
 572
 573     if (! m_Active) {
 574         // sanity check. Illegal use, but we'll try to prevent a crash anyway
 575 #if !defined(__VISAGECPP__)
 576 wxASSERT(0);
 577 #else
 578 wxASSERT(m_Active);
 579 #endif
 580         return FALSE;
 581     }
 582
 583     m_ContentsItem = NULL;
 584     m_Name = wxEmptyString;
 585
 586     file = fsys.OpenFile(m_Data->m_Contents[i].m_Book -> GetBasePath() +
 587                          m_Data->m_Contents[i].m_Page);
 588     if (file) {
 589         if (m_LastPage != file->GetLocation()) {
 590             m_LastPage = file->GetLocation();
 591             if (m_Engine.Scan(file -> GetStream())) {
 592                 m_Name = m_Data->m_Contents[i].m_Name;
 593                 m_ContentsItem = m_Data->m_Contents + i;
 594                 found = TRUE;
 595             }
 596         }
 597         delete file;
 598     }
 599     m_Active = (++m_CurIndex < m_MaxIndex);
 600     return found;
 601 }
 602
 603
 604
 605
 606
 607
 608
 609
 610 //--------------------------------------------------------------------------------
 611 // wxSearchEngine
 612 //--------------------------------------------------------------------------------
 613
 614 void wxSearchEngine::LookFor(const wxString& keyword)
 615 {
 616     if (m_Keyword) delete[] m_Keyword;
 617     m_Keyword = new wxChar[keyword.Length() + 1];
 618     wxStrcpy(m_Keyword, keyword.c_str());
 619     for (int i = wxStrlen(m_Keyword) - 1; i >= 0; i--)
 620         if ((m_Keyword[i] >= wxT('A')) && (m_Keyword[i] <= wxT('Z')))
 621             m_Keyword[i] += wxT('a') - wxT('A');
 622 }
 623
 624
 625
 626 bool wxSearchEngine::Scan(wxInputStream *stream)
 627 {
 628     wxASSERT_MSG(m_Keyword != NULL, _("wxSearchEngine::LookFor must be called before scanning!"));
 629
 630     int i, j;
 631     int lng = stream ->GetSize();
 632     int wrd = wxStrlen(m_Keyword);
 633     bool found = FALSE;
 634     char *buf = new char[lng + 1];
 635     stream -> Read(buf, lng);
 636     buf[lng] = 0;
 637
 638     for (i = 0; i < lng; i++)
 639         if ((buf[i] >= 'A') && (buf[i] <= 'Z')) buf[i] += 'a' - 'A';
 640
 641     for (i = 0; i < lng - wrd; i++) {
 642         j = 0;
 643         while ((j < wrd) && (buf[i + j] == m_Keyword[j])) j++;
 644     if (j == wrd) {found = TRUE; break; }
 645     }
 646
 647     delete[] buf;
 648     return found;
 649 }
 650
 651
 652
 653
 654 #endif