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
  59 static int LINKAGEMODE IndexCompareFunc(const void *a, const void *b)
  60 {
  61     return wxStrcmp(((wxHtmlContentsItem*)a) -> m_Name, ((wxHtmlContentsItem*)b) -> m_Name);
  62 }
  63
  64
  65 //-----------------------------------------------------------------------------
  66 // HP_Parser
  67 //-----------------------------------------------------------------------------
  68
  69 class HP_Parser : public wxHtmlParser
  70 {
  71     public:
  72         void AddText(const char* WXUNUSED(text)) { }
  73         wxObject* GetProduct() { return NULL; }
  74 };
  75
  76
  77 //-----------------------------------------------------------------------------
  78 // HP_TagHandler
  79 //-----------------------------------------------------------------------------
  80
  81 class HP_TagHandler : public wxHtmlTagHandler
  82 {
  83     private:
  84         wxString m_Name, m_Page;
  85         int m_Level;
  86         int m_ID;
  87         int m_Index;
  88         wxHtmlContentsItem *m_Items;
  89         int m_ItemsCnt;
  90         wxHtmlBookRecord *m_Book;
  91
  92     public:
  93         HP_TagHandler(wxHtmlBookRecord *b) : wxHtmlTagHandler() {m_Book = b; m_Items = NULL; m_ItemsCnt = 0; m_Name = m_Page = wxEmptyString; m_Level = 0; }
  94         wxString GetSupportedTags() { return wxT("UL,OBJECT,PARAM"); }
  95         bool HandleTag(const wxHtmlTag& tag);
  96         void WriteOut(wxHtmlContentsItem*& array, int& size);
  97         void ReadIn(wxHtmlContentsItem* array, int size);
  98 };
  99
 100
 101 bool HP_TagHandler::HandleTag(const wxHtmlTag& tag)
 102 {
 103     if (tag.GetName() == wxT("UL")) {
 104         m_Level++;
 105         ParseInner(tag);
 106         m_Level--;
 107         return TRUE;
 108     }
 109     else if (tag.GetName() == wxT("OBJECT")) {
 110         m_Name = m_Page = wxEmptyString;
 111         ParseInner(tag);
 112
 113         if (!m_Page.IsEmpty())
 114         /* should be 'if (tag.GetParam("TYPE") == "text/sitemap")'
 115            but this works fine. Valid HHW's file may contain only two
 116            object tags:
 117
 118            <OBJECT type="text/site properties">
 119                <param name="ImageType" value="Folder">
 120            </OBJECT>
 121
 122            or
 123
 124                <OBJECT type="text/sitemap">
 125                        <param name="Name" value="main page">
 126                        <param name="Local" value="another.htm">
 127                    </OBJECT>
 128
 129            We're interested in the latter. !m_Page.IsEmpty() is valid
 130            condition because text/site properties does not contain Local param
 131         */
 132         {
 133             if (m_ItemsCnt % wxHTML_REALLOC_STEP == 0)
 134                 m_Items = (wxHtmlContentsItem*) realloc(m_Items, (m_ItemsCnt + wxHTML_REALLOC_STEP) * sizeof(wxHtmlContentsItem));
 135             m_Items[m_ItemsCnt].m_Level = m_Level;
 136             m_Items[m_ItemsCnt].m_ID = m_ID;
 137             m_Items[m_ItemsCnt].m_Page = new wxChar[m_Page.Length() + 1];
 138             wxStrcpy(m_Items[m_ItemsCnt].m_Page, m_Page.c_str());
 139             m_Items[m_ItemsCnt].m_Name = new wxChar [m_Name.Length() + 1];
 140             wxStrcpy(m_Items[m_ItemsCnt].m_Name, m_Name.c_str());
 141             m_Items[m_ItemsCnt].m_Book = m_Book;
 142             m_ItemsCnt++;
 143         }
 144
 145         return TRUE;
 146     }
 147     else { // "PARAM"
 148         if (m_Name == wxEmptyString && tag.GetParam(wxT("NAME")) == wxT("Name")) m_Name = tag.GetParam(wxT("VALUE"));
 149         if (tag.GetParam(wxT("NAME")) == wxT("Local")) m_Page = tag.GetParam(wxT("VALUE"));
 150         if (tag.GetParam(wxT("NAME")) == wxT("ID")) tag.ScanParam(wxT("VALUE"), wxT("%i"), &m_ID);
 151         return FALSE;
 152     }
 153 }
 154
 155
 156
 157 void HP_TagHandler::WriteOut(wxHtmlContentsItem*& array, int& size)
 158 {
 159     array = m_Items;
 160     size = m_ItemsCnt;
 161     m_Items = NULL;
 162     m_ItemsCnt = 0;
 163 }
 164
 165 void HP_TagHandler::ReadIn(wxHtmlContentsItem* array, int size)
 166 {
 167     m_Items = array;
 168     m_ItemsCnt = size;
 169 }
 170
 171
 172
 173
 174 //-----------------------------------------------------------------------------
 175 // wxHtmlHelpData
 176 //-----------------------------------------------------------------------------
 177
 178 IMPLEMENT_DYNAMIC_CLASS(wxHtmlHelpData, wxObject)
 179
 180 wxHtmlHelpData::wxHtmlHelpData()
 181 {
 182     m_TempPath = wxEmptyString;
 183
 184     m_Contents = NULL;
 185     m_ContentsCnt = 0;
 186     m_Index = NULL;
 187     m_IndexCnt = 0;
 188 }
 189
 190 wxHtmlHelpData::~wxHtmlHelpData()
 191 {
 192     int i;
 193
 194     m_BookRecords.Empty();
 195     if (m_Contents) {
 196         for (i = 0; i < m_ContentsCnt; i++) {
 197             delete[] m_Contents[i].m_Page;
 198             delete[] m_Contents[i].m_Name;
 199         }
 200         free(m_Contents);
 201     }
 202     if (m_Index) {
 203         for (i = 0; i < m_IndexCnt; i++) {
 204             delete[] m_Index[i].m_Page;
 205             delete[] m_Index[i].m_Name;
 206         }
 207         free(m_Index);
 208     }
 209 }
 210
 211 bool wxHtmlHelpData::LoadMSProject(wxHtmlBookRecord *book, wxFileSystem& fsys, const wxString& indexfile, const wxString& contentsfile)
 212 {
 213     wxFSFile *f;
 214     char *buf;
 215     int sz;
 216     wxString string;
 217
 218     HP_Parser parser;
 219     HP_TagHandler *handler = new HP_TagHandler(book);
 220     parser.AddTagHandler(handler);
 221
 222     f = ( contentsfile.IsEmpty() ? 0 : fsys.OpenFile(contentsfile) );
 223     if (f) {
 224         sz = f -> GetStream() -> GetSize();
 225         buf = new char[sz + 1];
 226         buf[sz] = 0;
 227         f -> GetStream() -> Read(buf, sz);
 228         delete f;
 229         handler -> ReadIn(m_Contents, m_ContentsCnt);
 230         parser.Parse(buf);
 231         handler -> WriteOut(m_Contents, m_ContentsCnt);
 232         delete[] buf;
 233     }
 234
 235     f = ( indexfile.IsEmpty() ? 0 : fsys.OpenFile(indexfile) );
 236     if (f) {
 237         sz = f -> GetStream() -> GetSize();
 238         buf = new char[sz + 1];
 239         buf[sz] = 0;
 240         f -> GetStream() -> Read(buf, sz);
 241         delete f;
 242         handler -> ReadIn(m_Index, m_IndexCnt);
 243         parser.Parse(buf);
 244         handler -> WriteOut(m_Index, m_IndexCnt);
 245         delete[] buf;
 246     }
 247     return TRUE;
 248 }
 249
 250
 251
 252
 253 #if wxUSE_UNICODE
 254
 255 #define READ_STRING(f, s, lng) { char tmpc; for (int i = 0; i < lng; i++) { f -> Read(&tmpc, 1); s[i] = (wxChar)tmpc;} }
 256 #define WRITE_STRING(f, s, lng) { char tmpc; for (int i = 0; i < lng; i++) { tmpc = (char)s[i]; f -> Write(&tmpc, 1);} }
 257
 258 #else
 259
 260 #define READ_STRING(f, s, lng) f -> Read(s, lng * sizeof(char));
 261 #define WRITE_STRING(f, s, lng) f -> Write(s, lng * sizeof(char));
 262
 263 #endif
 264
 265
 266 #define CURRENT_CACHED_BOOK_VERSION     1
 267
 268 bool wxHtmlHelpData::LoadCachedBook(wxHtmlBookRecord *book, wxInputStream *f)
 269 {
 270     int i, st;
 271     wxInt32 x;
 272     wxInt32 version;
 273
 274     /* load header - version info : */
 275
 276     f -> Read(&x, sizeof(x));
 277     version = wxINT32_SWAP_ON_BE(x);
 278
 279     if (version != CURRENT_CACHED_BOOK_VERSION) return FALSE;
 280         // NOTE: when adding new version, please ensure backward compatibility!
 281
 282     /* load contents : */
 283
 284     f -> Read(&x, sizeof(x));
 285     st = m_ContentsCnt;
 286     m_ContentsCnt += wxINT32_SWAP_ON_BE(x);
 287     m_Contents = (wxHtmlContentsItem*) realloc(m_Contents,
 288                                                (m_ContentsCnt / wxHTML_REALLOC_STEP + 1) *
 289                                                wxHTML_REALLOC_STEP * sizeof(wxHtmlContentsItem));
 290     for (i = st; i < m_ContentsCnt; i++) {
 291         f -> Read(&x, sizeof(x));
 292         m_Contents[i].m_Level = wxINT32_SWAP_ON_BE(x);
 293         f -> Read(&x, sizeof(x));
 294         m_Contents[i].m_ID = wxINT32_SWAP_ON_BE(x);
 295         f -> Read(&x, sizeof(x)); x = wxINT32_SWAP_ON_BE(x);
 296         m_Contents[i].m_Name = new wxChar[x];
 297         READ_STRING(f, m_Contents[i].m_Name, x);
 298         f -> Read(&x, sizeof(x)); x = wxINT32_SWAP_ON_BE(x);
 299         m_Contents[i].m_Page = new wxChar[x];
 300         READ_STRING(f, m_Contents[i].m_Page, x);
 301         m_Contents[i].m_Book = book;
 302     }
 303
 304     /* load index : */
 305
 306     f -> Read(&x, sizeof(x));
 307     st = m_IndexCnt;
 308     m_IndexCnt += wxINT32_SWAP_ON_BE(x);
 309     m_Index = (wxHtmlContentsItem*) realloc(m_Index, (m_IndexCnt / wxHTML_REALLOC_STEP + 1) *
 310                                                      wxHTML_REALLOC_STEP * sizeof(wxHtmlContentsItem));
 311     for (i = st; i < m_IndexCnt; i++) {
 312         f -> Read(&x, sizeof(x)); x = wxINT32_SWAP_ON_BE(x);
 313         m_Index[i].m_Name = new wxChar[x];
 314         READ_STRING(f, m_Index[i].m_Name, x);
 315         f -> Read(&x, sizeof(x)); x = wxINT32_SWAP_ON_BE(x);
 316         m_Index[i].m_Page = new wxChar[x];
 317         READ_STRING(f, m_Index[i].m_Page, x);
 318         m_Index[i].m_Book = book;
 319     }
 320     return TRUE;
 321 }
 322
 323
 324 bool wxHtmlHelpData::SaveCachedBook(wxHtmlBookRecord *book, wxOutputStream *f)
 325 {
 326     int i;
 327     wxInt32 x;
 328
 329     /* save header - version info : */
 330
 331     x = wxINT32_SWAP_ON_BE(CURRENT_CACHED_BOOK_VERSION);
 332     f -> Write(&x, sizeof(x));
 333
 334     /* save contents : */
 335
 336     x = 0;
 337     for (i = 0; i < m_ContentsCnt; i++) if (m_Contents[i].m_Book == book && m_Contents[i].m_Level > 0) x++;
 338     x = wxINT32_SWAP_ON_BE(x);
 339     f -> Write(&x, sizeof(x));
 340     for (i = 0; i < m_ContentsCnt; i++) {
 341         if (m_Contents[i].m_Book != book || m_Contents[i].m_Level == 0) continue;
 342         x = wxINT32_SWAP_ON_BE(m_Contents[i].m_Level);
 343         f -> Write(&x, sizeof(x));
 344         x = wxINT32_SWAP_ON_BE(m_Contents[i].m_ID);
 345         f -> Write(&x, sizeof(x));
 346         x = wxINT32_SWAP_ON_BE(wxStrlen(m_Contents[i].m_Name) + 1);
 347         f -> Write(&x, sizeof(x));
 348         WRITE_STRING(f, m_Contents[i].m_Name, x);
 349         x = wxINT32_SWAP_ON_BE(wxStrlen(m_Contents[i].m_Page) + 1);
 350         f -> Write(&x, sizeof(x));
 351         WRITE_STRING(f, m_Contents[i].m_Page, x);
 352     }
 353
 354     /* save index : */
 355
 356     x = 0;
 357     for (i = 0; i < m_IndexCnt; i++) if (m_Index[i].m_Book == book && m_Index[i].m_Level > 0) x++;
 358     x = wxINT32_SWAP_ON_BE(x);
 359     f -> Write(&x, sizeof(x));
 360     for (i = 0; i < m_IndexCnt; i++) {
 361         if (m_Index[i].m_Book != book || m_Index[i].m_Level == 0) continue;
 362         x = wxINT32_SWAP_ON_BE(wxStrlen(m_Index[i].m_Name) + 1);
 363         f -> Write(&x, sizeof(x));
 364         WRITE_STRING(f, m_Index[i].m_Name, x);
 365         x = wxINT32_SWAP_ON_BE(wxStrlen(m_Index[i].m_Page) + 1);
 366         f -> Write(&x, sizeof(x));
 367         WRITE_STRING(f, m_Index[i].m_Page, x);
 368     }
 369     return TRUE;
 370 }
 371
 372
 373 void wxHtmlHelpData::SetTempDir(const wxString& path)
 374 {
 375     if (path == wxEmptyString) m_TempPath = path;
 376     else {
 377         if (wxIsAbsolutePath(path)) m_TempPath = path;
 378         else m_TempPath = wxGetCwd() + _T("/") + path;
 379
 380         if (m_TempPath[m_TempPath.Length() - 1] != _T('/'))
 381             m_TempPath << _T('/');
 382     }
 383 }
 384
 385
 386 bool wxHtmlHelpData::AddBookParam(const wxFSFile& bookfile,
 387                                   const wxString& title, const wxString& contfile,
 388                                   const wxString& indexfile, const wxString& deftopic,
 389                                   const wxString& path)
 390 {
 391     wxFileSystem fsys;
 392     wxFSFile *fi;
 393     wxHtmlBookRecord *bookr;
 394
 395     if (! path.IsEmpty())
 396         fsys.ChangePathTo(path, TRUE);
 397
 398     bookr = new wxHtmlBookRecord(fsys.GetPath(), title, deftopic);
 399
 400     if (m_ContentsCnt % wxHTML_REALLOC_STEP == 0)
 401         m_Contents = (wxHtmlContentsItem*) realloc(m_Contents, (m_ContentsCnt + wxHTML_REALLOC_STEP) * sizeof(wxHtmlContentsItem));
 402     m_Contents[m_ContentsCnt].m_Level = 0;
 403     m_Contents[m_ContentsCnt].m_ID = 0;
 404     m_Contents[m_ContentsCnt].m_Page = new wxChar[deftopic.Length() + 1];
 405     wxStrcpy(m_Contents[m_ContentsCnt].m_Page, deftopic.c_str());
 406     m_Contents[m_ContentsCnt].m_Name = new wxChar [title.Length() + 1];
 407     wxStrcpy(m_Contents[m_ContentsCnt].m_Name, title.c_str());
 408     m_Contents[m_ContentsCnt].m_Book = bookr;
 409
 410     // store the contents index for later
 411     int cont_start = m_ContentsCnt++;
 412
 413     // Try to find cached binary versions:
 414     // 1. save file as book, but with .hhp.cached extension
 415     // 2. same as 1. but in temp path
 416     // 3. otherwise or if cache load failed, load it from MS.
 417
 418     fi = fsys.OpenFile(bookfile.GetLocation() + wxT(".cached"));
 419
 420     if (fi == NULL ||
 421           fi -> GetModificationTime() < bookfile.GetModificationTime() ||
 422           !LoadCachedBook(bookr, fi -> GetStream()))
 423     {
 424         if (fi != NULL) delete fi;
 425         fi = fsys.OpenFile(m_TempPath + wxFileNameFromPath(bookfile.GetLocation()) + wxT(".cached"));
 426         if (m_TempPath == wxEmptyString || fi == NULL ||
 427             fi -> GetModificationTime() < bookfile.GetModificationTime() ||
 428             !LoadCachedBook(bookr, fi -> GetStream()))
 429         {
 430             LoadMSProject(bookr, fsys, indexfile, contfile);
 431             if (m_TempPath != wxEmptyString)
 432             {
 433                 wxFileOutputStream *outs = new wxFileOutputStream(m_TempPath +
 434                                                   wxFileNameFromPath(bookfile.GetLocation()) + wxT(".cached"));
 435                 SaveCachedBook(bookr, outs);
 436                 delete outs;
 437             }
 438         }
 439     }
 440
 441     if (fi != NULL) delete fi;
 442
 443     // Now store the contents range
 444     bookr->SetContentsRange(cont_start, m_ContentsCnt);
 445
 446     m_BookRecords.Add(bookr);
 447     if (m_IndexCnt > 0)
 448         qsort(m_Index, m_IndexCnt, sizeof(wxHtmlContentsItem), IndexCompareFunc);
 449
 450     return TRUE;
 451 }
 452
 453
 454 bool wxHtmlHelpData::AddBook(const wxString& book)
 455 {
 456     if (book.Right(4).Lower() == wxT(".zip") ||
 457         book.Right(4).Lower() == wxT(".htb") /*html book*/)
 458
 459     {
 460         wxFileSystem fsys;
 461         wxString s;
 462         bool rt = FALSE;
 463
 464         s = fsys.FindFirst(book + wxT("#zip:") + wxT("*.hhp"), wxFILE);
 465         while (!s.IsEmpty())
 466         {
 467             if (AddBook(s)) rt = TRUE;
 468             s = fsys.FindNext();
 469         }
 470
 471         return rt;
 472     }
 473
 474
 475     else
 476     {
 477         wxFSFile *fi;
 478         wxFileSystem fsys;
 479         wxInputStream *s;
 480         wxString bookFull;
 481
 482         int sz;
 483         char *buff, *lineptr;
 484         char linebuf[300];
 485
 486         wxString title = _("noname"),
 487                          safetitle,
 488                          start = wxEmptyString,
 489                                  contents = wxEmptyString, index = wxEmptyString;
 490
 491         if (wxIsAbsolutePath(book)) bookFull = book;
 492         else bookFull = wxGetCwd() + "/" + book;
 493
 494         fi = fsys.OpenFile(bookFull);
 495         if (fi == NULL) return FALSE;
 496         fsys.ChangePathTo(bookFull);
 497         s = fi -> GetStream();
 498         sz = s -> GetSize();
 499         buff = new char[sz + 1];
 500         buff[sz] = 0;
 501         s -> Read(buff, sz);
 502         lineptr = buff;
 503
 504         do {
 505             lineptr = ReadLine(lineptr, linebuf);
 506
 507             if (strstr(linebuf, "Title=") == linebuf)
 508                 title = linebuf + strlen("Title=");
 509             if (strstr(linebuf, "Default topic=") == linebuf)
 510                 start = linebuf + strlen("Default topic=");
 511             if (strstr(linebuf, "Index file=") == linebuf)
 512                 index = linebuf + strlen("Index file=");
 513             if (strstr(linebuf, "Contents file=") == linebuf)
 514                 contents = linebuf + strlen("Contents file=");
 515         } while (lineptr != NULL);
 516         delete[] buff;
 517
 518         bool rtval = AddBookParam(*fi, title, contents, index, start, fsys.GetPath());
 519         delete fi;
 520         return rtval;
 521     }
 522 }
 523
 524 wxString wxHtmlHelpData::FindPageByName(const wxString& x)
 525 {
 526     int cnt;
 527     int i;
 528     wxFileSystem fsys;
 529     wxFSFile *f;
 530     wxString url(wxEmptyString);
 531
 532     /* 1. try to open given file: */
 533
 534     cnt = m_BookRecords.GetCount();
 535     for (i = 0; i < cnt; i++) {
 536         f = fsys.OpenFile(m_BookRecords[i].GetBasePath() + x);
 537         if (f) {
 538             url = m_BookRecords[i].GetBasePath() + x;
 539             delete f;
 540             return url;
 541         }
 542     }
 543
 544
 545     /* 2. try to find a book: */
 546
 547     for (i = 0; i < cnt; i++) {
 548         if (m_BookRecords[i].GetTitle() == x) {
 549             url = m_BookRecords[i].GetBasePath() + m_BookRecords[i].GetStart();
 550             return url;
 551         }
 552     }
 553
 554     /* 3. try to find in contents: */
 555
 556     cnt = m_ContentsCnt;
 557     for (i = 0; i < cnt; i++) {
 558         if (wxStrcmp(m_Contents[i].m_Name, x) == 0) {
 559             url = m_Contents[i].m_Book -> GetBasePath() + m_Contents[i].m_Page;
 560             return url;
 561         }
 562     }
 563
 564
 565     /* 4. try to find in index: */
 566
 567     cnt = m_IndexCnt;
 568     for (i = 0; i < cnt; i++) {
 569         if (wxStrcmp(m_Index[i].m_Name, x) == 0) {
 570             url = m_Index[i].m_Book -> GetBasePath() + m_Index[i].m_Page;
 571             return url;
 572         }
 573     }
 574
 575     return url;
 576 }
 577
 578 wxString wxHtmlHelpData::FindPageById(int id)
 579 {
 580     int i;
 581     wxString url(wxEmptyString);
 582
 583     for (i = 0; i < m_ContentsCnt; i++) {
 584         if (m_Contents[i].m_ID == id) {
 585             url = m_Contents[i].m_Book -> GetBasePath() + m_Contents[i].m_Page;
 586             return url;
 587         }
 588     }
 589
 590     return url;
 591 }
 592
 593 //----------------------------------------------------------------------------------
 594 // wxHtmlSearchStatus functions
 595 //----------------------------------------------------------------------------------
 596
 597 wxHtmlSearchStatus::wxHtmlSearchStatus(wxHtmlHelpData* data, const wxString& keyword,
 598                                        bool case_sensitive, bool whole_words_only,
 599                                        const wxString& book)
 600 {
 601     m_Data = data;
 602     m_Keyword = keyword;
 603     wxHtmlBookRecord* bookr = NULL;
 604     if (book != wxEmptyString) {
 605         // we have to search in a specific book. Find it first
 606         int i, cnt = data->m_BookRecords.GetCount();
 607         for (i = 0; i < cnt; i++)
 608             if (data->m_BookRecords[i].GetTitle() == book) {
 609                 bookr = &(data->m_BookRecords[i]);
 610                 m_CurIndex = bookr->GetContentsStart();
 611                 m_MaxIndex = bookr->GetContentsEnd();
 612                 break;
 613             }
 614         // check; we won't crash if the book doesn't exist, but it's Bad Anyway.
 615         wxASSERT(bookr);
 616     }
 617     if (! bookr) {
 618         // no book specified; search all books
 619         m_CurIndex = 0;
 620         m_MaxIndex = m_Data->m_ContentsCnt;
 621     }
 622     m_Engine.LookFor(keyword, case_sensitive, whole_words_only);
 623     m_Active = (m_CurIndex < m_MaxIndex);
 624     m_LastPage = NULL;
 625 }
 626
 627 bool wxHtmlSearchStatus::Search()
 628 {
 629     wxFSFile *file;
 630     int i = m_CurIndex;  // shortcut
 631     bool found = FALSE;
 632     wxChar *thepage;
 633
 634     if (!m_Active) {
 635         // sanity check. Illegal use, but we'll try to prevent a crash anyway
 636         wxASSERT(m_Active);
 637         return FALSE;
 638     }
 639
 640     m_Name = wxEmptyString;
 641     m_ContentsItem = NULL;
 642     thepage = m_Data->m_Contents[i].m_Page;
 643
 644     m_Active = (++m_CurIndex < m_MaxIndex);
 645     // check if it is same page with different anchor:
 646     if (m_LastPage != NULL)
 647     {
 648         wxChar *p1, *p2;
 649         for (p1 = thepage, p2 = m_LastPage;
 650              *p1 != 0 && *p1 != _T('#') && *p1 == *p2; p1++, p2++) {}
 651
 652         m_LastPage = thepage;
 653
 654         if (*p1 == 0 || *p1 == _T('#'))
 655             return FALSE;
 656     }
 657     else m_LastPage = thepage;
 658
 659     wxFileSystem fsys;
 660     file = fsys.OpenFile(m_Data->m_Contents[i].m_Book -> GetBasePath() + thepage);
 661     if (file)
 662     {
 663         if (m_Engine.Scan(file -> GetStream())) {
 664             m_Name = m_Data->m_Contents[i].m_Name;
 665             m_ContentsItem = m_Data->m_Contents + i;
 666             found = TRUE;
 667         }
 668         delete file;
 669     }
 670     return found;
 671 }
 672
 673
 674
 675
 676
 677
 678
 679
 680 //--------------------------------------------------------------------------------
 681 // wxSearchEngine
 682 //--------------------------------------------------------------------------------
 683
 684 void wxSearchEngine::LookFor(const wxString& keyword, bool case_sensitive, bool whole_words_only)
 685 {
 686     m_CaseSensitive = case_sensitive;
 687     m_WholeWords = whole_words_only;
 688     if (m_Keyword) delete[] m_Keyword;
 689     m_Keyword = new wxChar[keyword.Length() + 1];
 690     wxStrcpy(m_Keyword, keyword.c_str());
 691
 692     if (!m_CaseSensitive)
 693         for (int i = wxStrlen(m_Keyword) - 1; i >= 0; i--)
 694             if ((m_Keyword[i] >= wxT('A')) && (m_Keyword[i] <= wxT('Z')))
 695                 m_Keyword[i] += wxT('a') - wxT('A');
 696 }
 697
 698
 699
 700 #define WHITESPACE(c)  (c == ' ' || c == '\n' || c == '\r' || c == '\t')
 701
 702 bool wxSearchEngine::Scan(wxInputStream *stream)
 703 {
 704     wxASSERT_MSG(m_Keyword != NULL, wxT("wxSearchEngine::LookFor must be called before scanning!"));
 705
 706     int i, j;
 707     int lng = stream ->GetSize();
 708     int wrd = wxStrlen(m_Keyword);
 709     bool found = FALSE;
 710     char *buf = new char[lng + 1];
 711     stream -> Read(buf, lng);
 712     buf[lng] = 0;
 713
 714     if (!m_CaseSensitive)
 715         for (i = 0; i < lng; i++)
 716             if ((buf[i] >= 'A') && (buf[i] <= 'Z')) buf[i] += 'a' - 'A';
 717
 718     if (m_WholeWords)
 719     {
 720         for (i = 0; i < lng - wrd; i++) {
 721             if (WHITESPACE(buf[i])) continue;
 722             j = 0;
 723             while ((j < wrd) && (buf[i + j] == m_Keyword[j])) j++;
 724             if (j == wrd && WHITESPACE(buf[i + j])) {found = TRUE; break; }
 725         }
 726     }
 727
 728     else
 729     {
 730         for (i = 0; i < lng - wrd; i++) {
 731             j = 0;
 732             while ((j < wrd) && (buf[i + j] == m_Keyword[j])) j++;
 733             if (j == wrd) {found = TRUE; break; }
 734         }
 735     }
 736
 737     delete[] buf;
 738     return found;
 739 }
 740
 741
 742
 743
 744 #endif