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 && wxUSE_STREAMS
  26
  27 #ifndef WXPRECOMP
  28     #include "wx/intl.h"
  29     #include "wx/log.h"
  30 #endif
  31
  32 #include "wx/html/helpdata.h"
  33 #include "wx/tokenzr.h"
  34 #include "wx/wfstream.h"
  35 #include "wx/busyinfo.h"
  36 #include "wx/encconv.h"
  37 #include "wx/fontmap.h"
  38 #include "wx/log.h"
  39 #include "wx/html/htmlpars.h"
  40 #include "wx/html/htmldefs.h"
  41 #include "wx/filename.h"
  42
  43 #include "wx/arrimpl.cpp"
  44 WX_DEFINE_OBJARRAY(wxHtmlBookRecArray)
  45
  46 //-----------------------------------------------------------------------------
  47 // static helper functions
  48 //-----------------------------------------------------------------------------
  49
  50 // Reads one line, stores it into buf and returns pointer to new line or NULL.
  51 static const char* ReadLine(const char *line, char *buf, size_t bufsize)
  52 {
  53     char *writeptr = buf;
  54     char *endptr = buf + bufsize - 1;
  55     const char *readptr = line;
  56
  57     while (*readptr != 0 && *readptr != '\r' && *readptr != '\n' &&
  58            writeptr != endptr)
  59         *(writeptr++) = *(readptr++);
  60     *writeptr = 0;
  61     while (*readptr == '\r' || *readptr == '\n')
  62         readptr++;
  63     if (*readptr == 0)
  64         return NULL;
  65     else
  66         return readptr;
  67 }
  68
  69
  70
  71 extern "C" int LINKAGEMODE
  72 wxHtmlHelpIndexCompareFunc(const void *a, const void *b)
  73 {
  74     return wxStricmp(((wxHtmlContentsItem*)a)->m_Name, ((wxHtmlContentsItem*)b)->m_Name);
  75 }
  76
  77
  78 //-----------------------------------------------------------------------------
  79 // HP_Parser
  80 //-----------------------------------------------------------------------------
  81
  82 class HP_Parser : public wxHtmlParser
  83 {
  84 public:
  85     wxObject* GetProduct() { return NULL; }
  86 protected:
  87     virtual void AddText(const wxChar* WXUNUSED(txt)) {}
  88 };
  89
  90
  91 //-----------------------------------------------------------------------------
  92 // HP_TagHandler
  93 //-----------------------------------------------------------------------------
  94
  95 class HP_TagHandler : public wxHtmlTagHandler
  96 {
  97     private:
  98         wxString m_Name, m_Page;
  99         int m_Level;
 100         int m_ID;
 101         int m_Index;
 102         wxHtmlContentsItem *m_Items;
 103         int m_ItemsCnt;
 104         wxHtmlBookRecord *m_Book;
 105
 106     public:
 107         HP_TagHandler(wxHtmlBookRecord *b) : wxHtmlTagHandler()
 108             { m_Book = b; m_Items = NULL; m_ItemsCnt = 0; m_Name = m_Page = wxEmptyString;
 109               m_Level = 0; m_ID = -1; }
 110         wxString GetSupportedTags() { return wxT("UL,OBJECT,PARAM"); }
 111         bool HandleTag(const wxHtmlTag& tag);
 112         void WriteOut(wxHtmlContentsItem*& array, int& size);
 113         void ReadIn(wxHtmlContentsItem* array, int size);
 114 };
 115
 116
 117 bool HP_TagHandler::HandleTag(const wxHtmlTag& tag)
 118 {
 119     if (tag.GetName() == wxT("UL"))
 120     {
 121         m_Level++;
 122         ParseInner(tag);
 123         m_Level--;
 124         return TRUE;
 125     }
 126     else if (tag.GetName() == wxT("OBJECT"))
 127     {
 128         m_Name = m_Page = wxEmptyString;
 129         ParseInner(tag);
 130
 131 #if 0
 132          if (!m_Page.IsEmpty())
 133         /* Valid HHW's file may contain only two object tags:
 134
 135            <OBJECT type="text/site properties">
 136                <param name="ImageType" value="Folder">
 137            </OBJECT>
 138
 139            or
 140
 141            <OBJECT type="text/sitemap">
 142                <param name="Name" value="main page">
 143                <param name="Local" value="another.htm">
 144            </OBJECT>
 145
 146            We're interested in the latter. !m_Page.IsEmpty() is valid
 147            condition because text/site properties does not contain Local param
 148         */
 149 #endif
 150         if (tag.GetParam(wxT("TYPE")) == wxT("text/sitemap"))
 151         {
 152             if (m_ItemsCnt % wxHTML_REALLOC_STEP == 0)
 153                 m_Items = (wxHtmlContentsItem*) realloc(m_Items,
 154                                        (m_ItemsCnt + wxHTML_REALLOC_STEP) *
 155                                        sizeof(wxHtmlContentsItem));
 156
 157             m_Items[m_ItemsCnt].m_Level = m_Level;
 158             m_Items[m_ItemsCnt].m_ID = m_ID;
 159             m_Items[m_ItemsCnt].m_Page = new wxChar[m_Page.Length() + 1];
 160             wxStrcpy(m_Items[m_ItemsCnt].m_Page, m_Page.c_str());
 161             m_Items[m_ItemsCnt].m_Name = new wxChar [m_Name.Length() + 1];
 162             wxStrcpy(m_Items[m_ItemsCnt].m_Name, m_Name.c_str());
 163             m_Items[m_ItemsCnt].m_Book = m_Book;
 164             m_ItemsCnt++;
 165         }
 166
 167         return TRUE;
 168     }
 169     else
 170     { // "PARAM"
 171         if (m_Name == wxEmptyString && tag.GetParam(wxT("NAME")) == wxT("Name"))
 172             m_Name = tag.GetParam(wxT("VALUE"));
 173         if (tag.GetParam(wxT("NAME")) == wxT("Local"))
 174             m_Page = tag.GetParam(wxT("VALUE"));
 175         if (tag.GetParam(wxT("NAME")) == wxT("ID"))
 176             tag.GetParamAsInt(wxT("VALUE"), &m_ID);
 177         return FALSE;
 178     }
 179 }
 180
 181
 182
 183 void HP_TagHandler::WriteOut(wxHtmlContentsItem*& array, int& size)
 184 {
 185     array = m_Items;
 186     size = m_ItemsCnt;
 187     m_Items = NULL;
 188     m_ItemsCnt = 0;
 189 }
 190
 191 void HP_TagHandler::ReadIn(wxHtmlContentsItem* array, int size)
 192 {
 193     m_Items = array;
 194     m_ItemsCnt = size;
 195 }
 196
 197
 198
 199
 200 //-----------------------------------------------------------------------------
 201 // wxHtmlHelpData
 202 //-----------------------------------------------------------------------------
 203
 204 wxString wxHtmlBookRecord::GetFullPath(const wxString &page) const
 205 {
 206     if (wxIsAbsolutePath(page))
 207         return page;
 208     else
 209         return m_BasePath + page;
 210 }
 211
 212
 213
 214 IMPLEMENT_DYNAMIC_CLASS(wxHtmlHelpData, wxObject)
 215
 216 wxHtmlHelpData::wxHtmlHelpData()
 217 {
 218     m_TempPath = wxEmptyString;
 219
 220     m_Contents = NULL;
 221     m_ContentsCnt = 0;
 222     m_Index = NULL;
 223     m_IndexCnt = 0;
 224 }
 225
 226 wxHtmlHelpData::~wxHtmlHelpData()
 227 {
 228     int i;
 229
 230     m_BookRecords.Empty();
 231     if (m_Contents)
 232     {
 233         for (i = 0; i < m_ContentsCnt; i++)
 234         {
 235             delete[] m_Contents[i].m_Page;
 236             delete[] m_Contents[i].m_Name;
 237         }
 238         free(m_Contents);
 239     }
 240     if (m_Index)
 241     {
 242         for (i = 0; i < m_IndexCnt; i++)
 243         {
 244             delete[] m_Index[i].m_Page;
 245             delete[] m_Index[i].m_Name;
 246         }
 247         free(m_Index);
 248     }
 249 }
 250
 251 // defined in htmlfilt.cpp
 252 void wxPrivate_ReadString(wxString& str, wxInputStream* s);
 253
 254 bool wxHtmlHelpData::LoadMSProject(wxHtmlBookRecord *book, wxFileSystem& fsys, const wxString& indexfile, const wxString& contentsfile)
 255 {
 256     wxFSFile *f;
 257     wxString buf;
 258     wxString string;
 259
 260     HP_Parser parser;
 261     HP_TagHandler *handler = new HP_TagHandler(book);
 262     parser.AddTagHandler(handler);
 263
 264     f = ( contentsfile.IsEmpty() ? (wxFSFile*) NULL : fsys.OpenFile(contentsfile) );
 265     if (f)
 266     {
 267         buf.clear();
 268         wxPrivate_ReadString(buf, f->GetStream());
 269         delete f;
 270         handler->ReadIn(m_Contents, m_ContentsCnt);
 271         parser.Parse(buf);
 272         handler->WriteOut(m_Contents, m_ContentsCnt);
 273     }
 274     else
 275         wxLogError(_("Cannot open contents file: %s"), contentsfile.c_str());
 276
 277     f = ( indexfile.IsEmpty() ? (wxFSFile*) NULL : fsys.OpenFile(indexfile) );
 278     if (f)
 279     {
 280         buf.clear();
 281         wxPrivate_ReadString(buf, f->GetStream());
 282         delete f;
 283         handler->ReadIn(m_Index, m_IndexCnt);
 284         parser.Parse(buf);
 285         handler->WriteOut(m_Index, m_IndexCnt);
 286     }
 287     else if (!indexfile.IsEmpty())
 288         wxLogError(_("Cannot open index file: %s"), indexfile.c_str());
 289     return TRUE;
 290 }
 291
 292
 293
 294 inline static void CacheWriteInt32(wxOutputStream *f, wxInt32 value)
 295 {
 296     wxInt32 x = wxINT32_SWAP_ON_BE(value);
 297     f->Write(&x, sizeof(x));
 298 }
 299
 300 inline static wxInt32 CacheReadInt32(wxInputStream *f)
 301 {
 302     wxInt32 x;
 303     f->Read(&x, sizeof(x));
 304     return wxINT32_SWAP_ON_BE(x);
 305 }
 306
 307 inline static void CacheWriteString(wxOutputStream *f, const wxChar *str)
 308 {
 309     size_t len = wxStrlen(str)+1;
 310     CacheWriteInt32(f, len);
 311     f->Write(str, len * sizeof(wxChar));
 312 }
 313
 314 inline static wxChar *CacheReadString(wxInputStream *f)
 315 {
 316     wxChar *str;
 317     size_t len = (size_t)CacheReadInt32(f);
 318     str = new wxChar[len];
 319     f->Read(str, len * sizeof(wxChar));
 320     return str;
 321 }
 322
 323 #define CURRENT_CACHED_BOOK_VERSION     2
 324
 325 bool wxHtmlHelpData::LoadCachedBook(wxHtmlBookRecord *book, wxInputStream *f)
 326 {
 327     int i, st;
 328     wxInt32 version;
 329
 330     /* load header - version info : */
 331     version = CacheReadInt32(f);
 332
 333     if (version != CURRENT_CACHED_BOOK_VERSION)
 334     {
 335         // NB: We can just silently return FALSE here and don't worry about
 336         //     it anymore, because AddBookParam will load the MS project in
 337         //     absence of (properly versioned) .cached file and automatically
 338         //     create new .cached file immediately afterward.
 339         return FALSE;
 340     }
 341
 342     /* load contents : */
 343     st = m_ContentsCnt;
 344     m_ContentsCnt += CacheReadInt32(f);
 345     m_Contents = (wxHtmlContentsItem*) realloc(m_Contents,
 346                                                (m_ContentsCnt / wxHTML_REALLOC_STEP + 1) *
 347                                                wxHTML_REALLOC_STEP * sizeof(wxHtmlContentsItem));
 348     for (i = st; i < m_ContentsCnt; i++)
 349     {
 350         m_Contents[i].m_Level = CacheReadInt32(f);
 351         m_Contents[i].m_ID = CacheReadInt32(f);
 352         m_Contents[i].m_Name = CacheReadString(f);
 353         m_Contents[i].m_Page = CacheReadString(f);
 354         m_Contents[i].m_Book = book;
 355     }
 356
 357     /* load index : */
 358     st = m_IndexCnt;
 359     m_IndexCnt += CacheReadInt32(f);
 360     m_Index = (wxHtmlContentsItem*) realloc(m_Index, (m_IndexCnt / wxHTML_REALLOC_STEP + 1) *
 361                                                      wxHTML_REALLOC_STEP * sizeof(wxHtmlContentsItem));
 362     for (i = st; i < m_IndexCnt; i++)
 363     {
 364         m_Index[i].m_Name = CacheReadString(f);
 365         m_Index[i].m_Page = CacheReadString(f);
 366         m_Index[i].m_Book = book;
 367     }
 368     return TRUE;
 369 }
 370
 371
 372 bool wxHtmlHelpData::SaveCachedBook(wxHtmlBookRecord *book, wxOutputStream *f)
 373 {
 374     int i;
 375     wxInt32 cnt;
 376
 377     /* save header - version info : */
 378     CacheWriteInt32(f, CURRENT_CACHED_BOOK_VERSION);
 379
 380     /* save contents : */
 381     for (cnt = 0, i = 0; i < m_ContentsCnt; i++)
 382         if (m_Contents[i].m_Book == book && m_Contents[i].m_Level > 0)
 383             cnt++;
 384     CacheWriteInt32(f, cnt);
 385
 386     for (i = 0; i < m_ContentsCnt; i++)
 387     {
 388         if (m_Contents[i].m_Book != book || m_Contents[i].m_Level == 0)
 389             continue;
 390         CacheWriteInt32(f, m_Contents[i].m_Level);
 391         CacheWriteInt32(f, m_Contents[i].m_ID);
 392         CacheWriteString(f, m_Contents[i].m_Name);
 393         CacheWriteString(f, m_Contents[i].m_Page);
 394     }
 395
 396     /* save index : */
 397     for (cnt = 0, i = 0; i < m_IndexCnt; i++)
 398         if (m_Index[i].m_Book == book && m_Index[i].m_Level > 0)
 399             cnt++;
 400     CacheWriteInt32(f, cnt);
 401
 402     for (i = 0; i < m_IndexCnt; i++)
 403     {
 404         if (m_Index[i].m_Book != book || m_Index[i].m_Level == 0)
 405             continue;
 406         CacheWriteString(f, m_Index[i].m_Name);
 407         CacheWriteString(f, m_Index[i].m_Page);
 408     }
 409     return TRUE;
 410 }
 411
 412
 413 void wxHtmlHelpData::SetTempDir(const wxString& path)
 414 {
 415     if (path == wxEmptyString) m_TempPath = path;
 416     else
 417     {
 418         if (wxIsAbsolutePath(path)) m_TempPath = path;
 419         else m_TempPath = wxGetCwd() + _T("/") + path;
 420
 421         if (m_TempPath[m_TempPath.Length() - 1] != _T('/'))
 422             m_TempPath << _T('/');
 423     }
 424 }
 425
 426
 427
 428 static wxString SafeFileName(const wxString& s)
 429 {
 430     wxString res(s);
 431     res.Replace(wxT("#"), wxT("_"));
 432     res.Replace(wxT(":"), wxT("_"));
 433     res.Replace(wxT("\\"), wxT("_"));
 434     res.Replace(wxT("/"), wxT("_"));
 435     return res;
 436 }
 437
 438 bool wxHtmlHelpData::AddBookParam(const wxFSFile& bookfile,
 439                                   wxFontEncoding encoding,
 440                                   const wxString& title, const wxString& contfile,
 441                                   const wxString& indexfile, const wxString& deftopic,
 442                                   const wxString& path)
 443 {
 444     wxFileSystem fsys;
 445     wxFSFile *fi;
 446     wxHtmlBookRecord *bookr;
 447
 448     int IndexOld = m_IndexCnt,
 449         ContentsOld = m_ContentsCnt;
 450
 451     if (!path.IsEmpty())
 452         fsys.ChangePathTo(path, TRUE);
 453
 454     size_t booksCnt = m_BookRecords.GetCount();
 455     for (size_t i = 0; i < booksCnt; i++)
 456     {
 457         if ( m_BookRecords[i].GetBookFile() == bookfile.GetLocation() )
 458             return TRUE; // book is (was) loaded
 459     }
 460
 461     bookr = new wxHtmlBookRecord(bookfile.GetLocation(), fsys.GetPath(), title, deftopic);
 462
 463     if (m_ContentsCnt % wxHTML_REALLOC_STEP == 0)
 464         m_Contents = (wxHtmlContentsItem*) realloc(m_Contents, (m_ContentsCnt + wxHTML_REALLOC_STEP) * sizeof(wxHtmlContentsItem));
 465     m_Contents[m_ContentsCnt].m_Level = 0;
 466     m_Contents[m_ContentsCnt].m_ID = 0;
 467     m_Contents[m_ContentsCnt].m_Page = new wxChar[deftopic.Length() + 1];
 468     wxStrcpy(m_Contents[m_ContentsCnt].m_Page, deftopic.c_str());
 469     m_Contents[m_ContentsCnt].m_Name = new wxChar [title.Length() + 1];
 470     wxStrcpy(m_Contents[m_ContentsCnt].m_Name, title.c_str());
 471     m_Contents[m_ContentsCnt].m_Book = bookr;
 472
 473     // store the contents index for later
 474     int cont_start = m_ContentsCnt++;
 475
 476     // Try to find cached binary versions:
 477     // 1. save file as book, but with .hhp.cached extension
 478     // 2. same as 1. but in temp path
 479     // 3. otherwise or if cache load failed, load it from MS.
 480
 481     fi = fsys.OpenFile(bookfile.GetLocation() + wxT(".cached"));
 482
 483     if (fi == NULL ||
 484           fi->GetModificationTime() < bookfile.GetModificationTime() ||
 485           !LoadCachedBook(bookr, fi->GetStream()))
 486     {
 487         if (fi != NULL) delete fi;
 488         fi = fsys.OpenFile(m_TempPath + wxFileNameFromPath(bookfile.GetLocation()) + wxT(".cached"));
 489         if (m_TempPath == wxEmptyString || fi == NULL ||
 490             fi->GetModificationTime() < bookfile.GetModificationTime() ||
 491             !LoadCachedBook(bookr, fi->GetStream()))
 492         {
 493             LoadMSProject(bookr, fsys, indexfile, contfile);
 494             if (m_TempPath != wxEmptyString)
 495             {
 496                 wxFileOutputStream *outs = new wxFileOutputStream(m_TempPath +
 497                                                   SafeFileName(wxFileNameFromPath(bookfile.GetLocation())) + wxT(".cached"));
 498                 SaveCachedBook(bookr, outs);
 499                 delete outs;
 500             }
 501         }
 502     }
 503
 504     if (fi != NULL) delete fi;
 505
 506     // Now store the contents range
 507     bookr->SetContentsRange(cont_start, m_ContentsCnt);
 508
 509     // Convert encoding, if neccessary:
 510     if (encoding != wxFONTENCODING_SYSTEM)
 511     {
 512         wxFontEncodingArray a = wxEncodingConverter::GetPlatformEquivalents(encoding);
 513         if (a.GetCount() != 0 && a[0] != encoding)
 514         {
 515             int i;
 516             wxEncodingConverter conv;
 517             conv.Init(encoding, a[0]);
 518
 519             for (i = IndexOld; i < m_IndexCnt; i++)
 520                 conv.Convert(m_Index[i].m_Name);
 521             for (i = ContentsOld; i < m_ContentsCnt; i++)
 522                 conv.Convert(m_Contents[i].m_Name);
 523         }
 524     }
 525
 526     m_BookRecords.Add(bookr);
 527     if (m_IndexCnt > 0)
 528         qsort(m_Index, m_IndexCnt, sizeof(wxHtmlContentsItem), wxHtmlHelpIndexCompareFunc);
 529
 530     return TRUE;
 531 }
 532
 533
 534 bool wxHtmlHelpData::AddBook(const wxString& book)
 535 {
 536     if (book.Right(4).Lower() == wxT(".zip") ||
 537         book.Right(4).Lower() == wxT(".htb") /*html book*/)
 538     {
 539         wxFileSystem fsys;
 540         wxString s;
 541         bool rt = FALSE;
 542
 543         s = fsys.FindFirst(book + wxT("#zip:") + wxT("*.hhp"), wxFILE);
 544         while (!s.IsEmpty())
 545         {
 546             if (AddBook(s)) rt = TRUE;
 547             s = fsys.FindNext();
 548         }
 549
 550         return rt;
 551     }
 552     else
 553     {
 554         wxFSFile *fi;
 555         wxFileSystem fsys;
 556         wxInputStream *s;
 557         wxString bookFull;
 558
 559         wxString title = _("noname"),
 560                  safetitle,
 561                  start = wxEmptyString,
 562                  contents = wxEmptyString,
 563                  index = wxEmptyString,
 564                  charset = wxEmptyString;
 565
 566 #if defined(__WXMAC__) && !defined(__DARWIN__)
 567         if (wxIsAbsolutePath(book)) bookFull = book;
 568         else bookFull = wxGetCwd() + book; // no slash or dot
 569         wxFileName fn( bookFull );
 570         bookFull = fn.GetFullPath( wxPATH_UNIX );
 571 #else
 572         if (wxIsAbsolutePath(book)) bookFull = book;
 573         else bookFull = wxGetCwd() + "/" + book;
 574 #endif
 575
 576         fi = fsys.OpenFile(bookFull);
 577         if (fi == NULL)
 578         {
 579             wxLogError(_("Cannot open HTML help book: %s"), bookFull.c_str());
 580             return FALSE;
 581         }
 582         fsys.ChangePathTo(bookFull);
 583         s = fi->GetStream();
 584
 585         const char *lineptr;
 586         char linebuf[300];
 587         wxString tmp;
 588
 589         wxPrivate_ReadString(tmp, s);
 590         lineptr = tmp.c_str();
 591
 592         do
 593         {
 594             lineptr = ReadLine(lineptr, linebuf, 300);
 595
 596             for (char *ch = linebuf; *ch != '\0' && *ch != '='; ch++)
 597                *ch = tolower(*ch);
 598
 599             if (strstr(linebuf, "title=") == linebuf)
 600                 title = linebuf + strlen("title=");
 601             if (strstr(linebuf, "default topic=") == linebuf)
 602                 start = linebuf + strlen("default topic=");
 603             if (strstr(linebuf, "index file=") == linebuf)
 604                 index = linebuf + strlen("index file=");
 605             if (strstr(linebuf, "contents file=") == linebuf)
 606                 contents = linebuf + strlen("contents file=");
 607             if (strstr(linebuf, "charset=") == linebuf)
 608                 charset = linebuf + strlen("charset=");
 609         } while (lineptr != NULL);
 610
 611         wxFontEncoding enc;
 612         if (charset == wxEmptyString) enc = wxFONTENCODING_SYSTEM;
 613         else enc = wxFontMapper::Get()->CharsetToEncoding(charset);
 614         bool rtval = AddBookParam(*fi, enc,
 615                                   title, contents, index, start, fsys.GetPath());
 616         delete fi;
 617         return rtval;
 618     }
 619 }
 620
 621 wxString wxHtmlHelpData::FindPageByName(const wxString& x)
 622 {
 623     int cnt;
 624     int i;
 625     wxFileSystem fsys;
 626     wxFSFile *f;
 627     wxString url(wxEmptyString);
 628
 629     /* 1. try to open given file: */
 630
 631     cnt = m_BookRecords.GetCount();
 632     for (i = 0; i < cnt; i++)
 633     {
 634         f = fsys.OpenFile(m_BookRecords[i].GetFullPath(x));
 635         if (f)
 636         {
 637             url = m_BookRecords[i].GetFullPath(x);
 638             delete f;
 639             return url;
 640         }
 641     }
 642
 643
 644     /* 2. try to find a book: */
 645
 646     for (i = 0; i < cnt; i++)
 647     {
 648         if (m_BookRecords[i].GetTitle() == x)
 649         {
 650             url = m_BookRecords[i].GetFullPath(m_BookRecords[i].GetStart());
 651             return url;
 652         }
 653     }
 654
 655     /* 3. try to find in contents: */
 656
 657     cnt = m_ContentsCnt;
 658     for (i = 0; i < cnt; i++)
 659     {
 660         if (wxStrcmp(m_Contents[i].m_Name, x) == 0)
 661         {
 662             url = m_Contents[i].GetFullPath();
 663             return url;
 664         }
 665     }
 666
 667
 668     /* 4. try to find in index: */
 669
 670     cnt = m_IndexCnt;
 671     for (i = 0; i < cnt; i++)
 672     {
 673         if (wxStrcmp(m_Index[i].m_Name, x) == 0)
 674         {
 675             url = m_Index[i].GetFullPath();
 676             return url;
 677         }
 678     }
 679
 680     return url;
 681 }
 682
 683 wxString wxHtmlHelpData::FindPageById(int id)
 684 {
 685     int i;
 686     wxString url(wxEmptyString);
 687
 688     for (i = 0; i < m_ContentsCnt; i++)
 689     {
 690         if (m_Contents[i].m_ID == id)
 691         {
 692             url = m_Contents[i].GetFullPath();
 693             return url;
 694         }
 695     }
 696
 697     return url;
 698 }
 699
 700 //----------------------------------------------------------------------------------
 701 // wxHtmlSearchStatus functions
 702 //----------------------------------------------------------------------------------
 703
 704 wxHtmlSearchStatus::wxHtmlSearchStatus(wxHtmlHelpData* data, const wxString& keyword,
 705                                        bool case_sensitive, bool whole_words_only,
 706                                        const wxString& book)
 707 {
 708     m_Data = data;
 709     m_Keyword = keyword;
 710     wxHtmlBookRecord* bookr = NULL;
 711     if (book != wxEmptyString)
 712     {
 713         // we have to search in a specific book. Find it first
 714         int i, cnt = data->m_BookRecords.GetCount();
 715         for (i = 0; i < cnt; i++)
 716             if (data->m_BookRecords[i].GetTitle() == book)
 717             {
 718                 bookr = &(data->m_BookRecords[i]);
 719                 m_CurIndex = bookr->GetContentsStart();
 720                 m_MaxIndex = bookr->GetContentsEnd();
 721                 break;
 722             }
 723         // check; we won't crash if the book doesn't exist, but it's Bad Anyway.
 724         wxASSERT(bookr);
 725     }
 726     if (! bookr)
 727     {
 728         // no book specified; search all books
 729         m_CurIndex = 0;
 730         m_MaxIndex = m_Data->m_ContentsCnt;
 731     }
 732     m_Engine.LookFor(keyword, case_sensitive, whole_words_only);
 733     m_Active = (m_CurIndex < m_MaxIndex);
 734     m_LastPage = NULL;
 735 }
 736
 737 bool wxHtmlSearchStatus::Search()
 738 {
 739     wxFSFile *file;
 740     int i = m_CurIndex;  // shortcut
 741     bool found = FALSE;
 742     wxChar *thepage;
 743
 744     if (!m_Active)
 745     {
 746         // sanity check. Illegal use, but we'll try to prevent a crash anyway
 747         wxASSERT(m_Active);
 748         return FALSE;
 749     }
 750
 751     m_Name = wxEmptyString;
 752     m_ContentsItem = NULL;
 753     thepage = m_Data->m_Contents[i].m_Page;
 754
 755     m_Active = (++m_CurIndex < m_MaxIndex);
 756     // check if it is same page with different anchor:
 757     if (m_LastPage != NULL)
 758     {
 759         wxChar *p1, *p2;
 760         for (p1 = thepage, p2 = m_LastPage;
 761              *p1 != 0 && *p1 != _T('#') && *p1 == *p2; p1++, p2++) {}
 762
 763         m_LastPage = thepage;
 764
 765         if (*p1 == 0 || *p1 == _T('#'))
 766             return FALSE;
 767     }
 768     else m_LastPage = thepage;
 769
 770     wxFileSystem fsys;
 771     file = fsys.OpenFile(m_Data->m_Contents[i].m_Book->GetFullPath(thepage));
 772     if (file)
 773     {
 774         if (m_Engine.Scan(file->GetStream()))
 775         {
 776             m_Name = m_Data->m_Contents[i].m_Name;
 777             m_ContentsItem = m_Data->m_Contents + i;
 778             found = TRUE;
 779         }
 780         delete file;
 781     }
 782     return found;
 783 }
 784
 785
 786
 787
 788
 789
 790
 791
 792 //--------------------------------------------------------------------------------
 793 // wxSearchEngine
 794 //--------------------------------------------------------------------------------
 795
 796 void wxSearchEngine::LookFor(const wxString& keyword, bool case_sensitive, bool whole_words_only)
 797 {
 798     m_CaseSensitive = case_sensitive;
 799     m_WholeWords = whole_words_only;
 800     if (m_Keyword) delete[] m_Keyword;
 801     m_Keyword = new wxChar[keyword.Length() + 1];
 802     wxStrcpy(m_Keyword, keyword.c_str());
 803
 804     if (!m_CaseSensitive)
 805     {
 806         for (int i = wxStrlen(m_Keyword) - 1; i >= 0; i--)
 807         {
 808             if ((m_Keyword[i] >= wxT('A')) && (m_Keyword[i] <= wxT('Z')))
 809                 m_Keyword[i] += wxT('a') - wxT('A');
 810         }
 811     }
 812 }
 813
 814
 815
 816 #define WHITESPACE(c)  (c == ' ' || c == '\n' || c == '\r' || c == '\t')
 817
 818 bool wxSearchEngine::Scan(wxInputStream *stream)
 819 {
 820     wxASSERT_MSG(m_Keyword != NULL, wxT("wxSearchEngine::LookFor must be called before scanning!"));
 821
 822     int i, j;
 823     int wrd = wxStrlen(m_Keyword);
 824     bool found = FALSE;
 825     wxString tmp;
 826     wxPrivate_ReadString(tmp, stream);
 827     int lng = tmp.length();
 828     const char *buf = tmp.c_str();
 829
 830     if (!m_CaseSensitive)
 831         for (i = 0; i < lng; i++)
 832             tmp[(size_t)i] = (char)tolower(tmp[(size_t)i]);
 833
 834     if (m_WholeWords)
 835     {
 836         for (i = 0; i < lng - wrd; i++)
 837         {
 838             if (WHITESPACE(buf[i])) continue;
 839             j = 0;
 840             while ((j < wrd) && (buf[i + j] == m_Keyword[j])) j++;
 841             if (j == wrd && WHITESPACE(buf[i + j])) { found = TRUE; break; }
 842         }
 843     }
 844
 845     else
 846     {
 847         for (i = 0; i < lng - wrd; i++)
 848         {
 849             j = 0;
 850             while ((j < wrd) && (buf[i + j] == m_Keyword[j])) j++;
 851             if (j == wrd) { found = TRUE; break; }
 852         }
 853     }
 854
 855     return found;
 856 }
 857
 858
 859
 860 #endif