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 char* ReadLine(char *line, char *buf, size_t bufsize)
  52 {
  53     char *writeptr = buf;
  54     char *endptr = buf + bufsize - 1;
  55     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 bool wxHtmlHelpData::LoadMSProject(wxHtmlBookRecord *book, wxFileSystem& fsys, const wxString& indexfile, const wxString& contentsfile)
 252 {
 253     wxFSFile *f;
 254     char *buf;
 255     int sz;
 256     wxString string;
 257
 258     HP_Parser parser;
 259     HP_TagHandler *handler = new HP_TagHandler(book);
 260     parser.AddTagHandler(handler);
 261
 262     f = ( contentsfile.IsEmpty() ? (wxFSFile*) NULL : fsys.OpenFile(contentsfile) );
 263     if (f)
 264     {
 265         sz = f->GetStream()->GetSize();
 266         buf = new char[sz + 1];
 267         buf[sz] = 0;
 268         f->GetStream()->Read(buf, sz);
 269         delete f;
 270         handler->ReadIn(m_Contents, m_ContentsCnt);
 271         parser.Parse(buf);
 272         handler->WriteOut(m_Contents, m_ContentsCnt);
 273         delete[] buf;
 274     }
 275     else
 276         wxLogError(_("Cannot open contents file: %s"), contentsfile.c_str());
 277
 278     f = ( indexfile.IsEmpty() ? (wxFSFile*) NULL : fsys.OpenFile(indexfile) );
 279     if (f)
 280     {
 281         sz = f->GetStream()->GetSize();
 282         buf = new char[sz + 1];
 283         buf[sz] = 0;
 284         f->GetStream()->Read(buf, sz);
 285         delete f;
 286         handler->ReadIn(m_Index, m_IndexCnt);
 287         parser.Parse(buf);
 288         handler->WriteOut(m_Index, m_IndexCnt);
 289         delete[] buf;
 290     }
 291     else if (!indexfile.IsEmpty())
 292         wxLogError(_("Cannot open index file: %s"), indexfile.c_str());
 293     return TRUE;
 294 }
 295
 296
 297
 298 inline static void CacheWriteInt32(wxOutputStream *f, wxInt32 value)
 299 {
 300     wxInt32 x = wxINT32_SWAP_ON_BE(value);
 301     f->Write(&x, sizeof(x));
 302 }
 303
 304 inline static wxInt32 CacheReadInt32(wxInputStream *f)
 305 {
 306     wxInt32 x;
 307     f->Read(&x, sizeof(x));
 308     return wxINT32_SWAP_ON_BE(x);
 309 }
 310
 311 inline static void CacheWriteString(wxOutputStream *f, const wxChar *str)
 312 {
 313     size_t len = wxStrlen(str)+1;
 314     CacheWriteInt32(f, len);
 315     f->Write(str, len * sizeof(wxChar));
 316 }
 317
 318 inline static wxChar *CacheReadString(wxInputStream *f)
 319 {
 320     wxChar *str;
 321     size_t len = (size_t)CacheReadInt32(f);
 322     str = new wxChar[len];
 323     f->Read(str, len * sizeof(wxChar));
 324     return str;
 325 }
 326
 327 #define CURRENT_CACHED_BOOK_VERSION     2
 328
 329 bool wxHtmlHelpData::LoadCachedBook(wxHtmlBookRecord *book, wxInputStream *f)
 330 {
 331     int i, st;
 332     wxInt32 version;
 333
 334     /* load header - version info : */
 335     version = CacheReadInt32(f);
 336
 337     if (version != CURRENT_CACHED_BOOK_VERSION)
 338     {
 339         // NB: We can just silently return FALSE here and don't worry about
 340         //     it anymore, because AddBookParam will load the MS project in
 341         //     absence of (properly versioned) .cached file and automatically
 342         //     create new .cached file immediately afterward.
 343         return FALSE;
 344     }
 345
 346     /* load contents : */
 347     st = m_ContentsCnt;
 348     m_ContentsCnt += CacheReadInt32(f);
 349     m_Contents = (wxHtmlContentsItem*) realloc(m_Contents,
 350                                                (m_ContentsCnt / wxHTML_REALLOC_STEP + 1) *
 351                                                wxHTML_REALLOC_STEP * sizeof(wxHtmlContentsItem));
 352     for (i = st; i < m_ContentsCnt; i++)
 353     {
 354         m_Contents[i].m_Level = CacheReadInt32(f);
 355         m_Contents[i].m_ID = CacheReadInt32(f);
 356         m_Contents[i].m_Name = CacheReadString(f);
 357         m_Contents[i].m_Page = CacheReadString(f);
 358         m_Contents[i].m_Book = book;
 359     }
 360
 361     /* load index : */
 362     st = m_IndexCnt;
 363     m_IndexCnt += CacheReadInt32(f);
 364     m_Index = (wxHtmlContentsItem*) realloc(m_Index, (m_IndexCnt / wxHTML_REALLOC_STEP + 1) *
 365                                                      wxHTML_REALLOC_STEP * sizeof(wxHtmlContentsItem));
 366     for (i = st; i < m_IndexCnt; i++)
 367     {
 368         m_Index[i].m_Name = CacheReadString(f);
 369         m_Index[i].m_Page = CacheReadString(f);
 370         m_Index[i].m_Book = book;
 371     }
 372     return TRUE;
 373 }
 374
 375
 376 bool wxHtmlHelpData::SaveCachedBook(wxHtmlBookRecord *book, wxOutputStream *f)
 377 {
 378     int i;
 379     wxInt32 cnt;
 380
 381     /* save header - version info : */
 382     CacheWriteInt32(f, CURRENT_CACHED_BOOK_VERSION);
 383
 384     /* save contents : */
 385     for (cnt = 0, i = 0; i < m_ContentsCnt; i++)
 386         if (m_Contents[i].m_Book == book && m_Contents[i].m_Level > 0)
 387             cnt++;
 388     CacheWriteInt32(f, cnt);
 389
 390     for (i = 0; i < m_ContentsCnt; i++)
 391     {
 392         if (m_Contents[i].m_Book != book || m_Contents[i].m_Level == 0)
 393             continue;
 394         CacheWriteInt32(f, m_Contents[i].m_Level);
 395         CacheWriteInt32(f, m_Contents[i].m_ID);
 396         CacheWriteString(f, m_Contents[i].m_Name);
 397         CacheWriteString(f, m_Contents[i].m_Page);
 398     }
 399
 400     /* save index : */
 401     for (cnt = 0, i = 0; i < m_IndexCnt; i++)
 402         if (m_Index[i].m_Book == book && m_Index[i].m_Level > 0)
 403             cnt++;
 404     CacheWriteInt32(f, cnt);
 405
 406     for (i = 0; i < m_IndexCnt; i++)
 407     {
 408         if (m_Index[i].m_Book != book || m_Index[i].m_Level == 0)
 409             continue;
 410         CacheWriteString(f, m_Index[i].m_Name);
 411         CacheWriteString(f, m_Index[i].m_Page);
 412     }
 413     return TRUE;
 414 }
 415
 416
 417 void wxHtmlHelpData::SetTempDir(const wxString& path)
 418 {
 419     if (path == wxEmptyString) m_TempPath = path;
 420     else
 421     {
 422         if (wxIsAbsolutePath(path)) m_TempPath = path;
 423         else m_TempPath = wxGetCwd() + _T("/") + path;
 424
 425         if (m_TempPath[m_TempPath.Length() - 1] != _T('/'))
 426             m_TempPath << _T('/');
 427     }
 428 }
 429
 430
 431
 432 static wxString SafeFileName(const wxString& s)
 433 {
 434     wxString res(s);
 435     res.Replace(wxT("#"), wxT("_"));
 436     res.Replace(wxT(":"), wxT("_"));
 437     res.Replace(wxT("\\"), wxT("_"));
 438     res.Replace(wxT("/"), wxT("_"));
 439     return res;
 440 }
 441
 442 bool wxHtmlHelpData::AlreadyHasBook(wxHtmlBookRecord * bookr)
 443 {
 444     size_t bookCount = m_BookRecords.GetCount();
 445     if (bookCount == 0) return FALSE ;
 446
 447     wxHtmlBookRecord currentBook(wxEmptyString,wxEmptyString,wxEmptyString);
 448     size_t i;
 449     for (i=0; i<bookCount; i++)
 450         {
 451         currentBook = m_BookRecords.Item(i) ;
 452         if (currentBook.GetBasePath().IsSameAs(bookr->GetBasePath()) &&
 453             currentBook.GetTitle().IsSameAs(bookr->GetTitle()) &&
 454             currentBook.GetStart().IsSameAs(bookr->GetStart()) )
 455           return TRUE ;
 456
 457         }
 458     return FALSE ;
 459 }
 460
 461 bool wxHtmlHelpData::AddBookParam(const wxFSFile& bookfile,
 462                                   wxFontEncoding encoding,
 463                                   const wxString& title, const wxString& contfile,
 464                                   const wxString& indexfile, const wxString& deftopic,
 465                                   const wxString& path)
 466 {
 467     wxFileSystem fsys;
 468     wxFSFile *fi;
 469     wxHtmlBookRecord *bookr;
 470
 471     int IndexOld = m_IndexCnt,
 472         ContentsOld = m_ContentsCnt;
 473
 474     if (! path.IsEmpty())
 475         fsys.ChangePathTo(path, TRUE);
 476
 477     bookr = new wxHtmlBookRecord(fsys.GetPath(), title, deftopic);
 478     // return TRUE to indicate book is loaded
 479     if (AlreadyHasBook(bookr)) return TRUE ;
 480
 481     if (m_ContentsCnt % wxHTML_REALLOC_STEP == 0)
 482         m_Contents = (wxHtmlContentsItem*) realloc(m_Contents, (m_ContentsCnt + wxHTML_REALLOC_STEP) * sizeof(wxHtmlContentsItem));
 483     m_Contents[m_ContentsCnt].m_Level = 0;
 484     m_Contents[m_ContentsCnt].m_ID = 0;
 485     m_Contents[m_ContentsCnt].m_Page = new wxChar[deftopic.Length() + 1];
 486     wxStrcpy(m_Contents[m_ContentsCnt].m_Page, deftopic.c_str());
 487     m_Contents[m_ContentsCnt].m_Name = new wxChar [title.Length() + 1];
 488     wxStrcpy(m_Contents[m_ContentsCnt].m_Name, title.c_str());
 489     m_Contents[m_ContentsCnt].m_Book = bookr;
 490
 491     // store the contents index for later
 492     int cont_start = m_ContentsCnt++;
 493
 494     // Try to find cached binary versions:
 495     // 1. save file as book, but with .hhp.cached extension
 496     // 2. same as 1. but in temp path
 497     // 3. otherwise or if cache load failed, load it from MS.
 498
 499     fi = fsys.OpenFile(bookfile.GetLocation() + wxT(".cached"));
 500
 501     if (fi == NULL ||
 502           fi->GetModificationTime() < bookfile.GetModificationTime() ||
 503           !LoadCachedBook(bookr, fi->GetStream()))
 504     {
 505         if (fi != NULL) delete fi;
 506         fi = fsys.OpenFile(m_TempPath + wxFileNameFromPath(bookfile.GetLocation()) + wxT(".cached"));
 507         if (m_TempPath == wxEmptyString || fi == NULL ||
 508             fi->GetModificationTime() < bookfile.GetModificationTime() ||
 509             !LoadCachedBook(bookr, fi->GetStream()))
 510         {
 511             LoadMSProject(bookr, fsys, indexfile, contfile);
 512             if (m_TempPath != wxEmptyString)
 513             {
 514                 wxFileOutputStream *outs = new wxFileOutputStream(m_TempPath +
 515                                                   SafeFileName(wxFileNameFromPath(bookfile.GetLocation())) + wxT(".cached"));
 516                 SaveCachedBook(bookr, outs);
 517                 delete outs;
 518             }
 519         }
 520     }
 521
 522     if (fi != NULL) delete fi;
 523
 524     // Now store the contents range
 525     bookr->SetContentsRange(cont_start, m_ContentsCnt);
 526
 527     // Convert encoding, if neccessary:
 528     if (encoding != wxFONTENCODING_SYSTEM)
 529     {
 530         wxFontEncodingArray a = wxEncodingConverter::GetPlatformEquivalents(encoding);
 531         if (a.GetCount() != 0 && a[0] != encoding)
 532         {
 533             int i;
 534             wxEncodingConverter conv;
 535             conv.Init(encoding, a[0]);
 536
 537             for (i = IndexOld; i < m_IndexCnt; i++)
 538                 conv.Convert(m_Index[i].m_Name);
 539             for (i = ContentsOld; i < m_ContentsCnt; i++)
 540                 conv.Convert(m_Contents[i].m_Name);
 541         }
 542     }
 543
 544     m_BookRecords.Add(bookr);
 545     if (m_IndexCnt > 0)
 546         qsort(m_Index, m_IndexCnt, sizeof(wxHtmlContentsItem), wxHtmlHelpIndexCompareFunc);
 547
 548     return TRUE;
 549 }
 550
 551
 552 bool wxHtmlHelpData::AddBook(const wxString& book)
 553 {
 554     if (book.Right(4).Lower() == wxT(".zip") ||
 555         book.Right(4).Lower() == wxT(".htb") /*html book*/)
 556     {
 557         wxFileSystem fsys;
 558         wxString s;
 559         bool rt = FALSE;
 560
 561         s = fsys.FindFirst(book + wxT("#zip:") + wxT("*.hhp"), wxFILE);
 562         while (!s.IsEmpty())
 563         {
 564             if (AddBook(s)) rt = TRUE;
 565             s = fsys.FindNext();
 566         }
 567
 568         return rt;
 569     }
 570     else
 571     {
 572         wxFSFile *fi;
 573         wxFileSystem fsys;
 574         wxInputStream *s;
 575         wxString bookFull;
 576
 577         wxString title = _("noname"),
 578                  safetitle,
 579                  start = wxEmptyString,
 580                  contents = wxEmptyString,
 581                  index = wxEmptyString,
 582                  charset = wxEmptyString;
 583
 584 #if defined(__WXMAC__) && !defined(__DARWIN__)
 585         if (wxIsAbsolutePath(book)) bookFull = book;
 586         else bookFull = wxGetCwd() + book; // no slash or dot
 587         wxFileName fn( bookFull );
 588         bookFull = fn.GetFullPath( wxPATH_UNIX );
 589 #else
 590         if (wxIsAbsolutePath(book)) bookFull = book;
 591         else bookFull = wxGetCwd() + "/" + book;
 592 #endif
 593
 594         fi = fsys.OpenFile(bookFull);
 595         if (fi == NULL)
 596         {
 597             wxLogError(_("Cannot open HTML help book: %s"), bookFull.c_str());
 598             return FALSE;
 599         }
 600         fsys.ChangePathTo(bookFull);
 601         s = fi->GetStream();
 602
 603         int sz;
 604         char *buff, *lineptr;
 605         char linebuf[300];
 606
 607         sz = s->GetSize();
 608         buff = new char[sz + 1];
 609         buff[sz] = 0;
 610         s->Read(buff, sz);
 611         lineptr = buff;
 612
 613         do
 614         {
 615             lineptr = ReadLine(lineptr, linebuf, 300);
 616
 617             for (char *ch = linebuf; *ch != '\0' && *ch != '='; ch++)
 618                *ch = tolower(*ch);
 619
 620             if (strstr(linebuf, "title=") == linebuf)
 621                 title = linebuf + strlen("title=");
 622             if (strstr(linebuf, "default topic=") == linebuf)
 623                 start = linebuf + strlen("default topic=");
 624             if (strstr(linebuf, "index file=") == linebuf)
 625                 index = linebuf + strlen("index file=");
 626             if (strstr(linebuf, "contents file=") == linebuf)
 627                 contents = linebuf + strlen("contents file=");
 628             if (strstr(linebuf, "charset=") == linebuf)
 629                 charset = linebuf + strlen("charset=");
 630         } while (lineptr != NULL);
 631         delete[] buff;
 632
 633         wxFontEncoding enc;
 634         if (charset == wxEmptyString) enc = wxFONTENCODING_SYSTEM;
 635         else enc = wxTheFontMapper->CharsetToEncoding(charset);
 636         bool rtval = AddBookParam(*fi, enc,
 637                                   title, contents, index, start, fsys.GetPath());
 638         delete fi;
 639         return rtval;
 640     }
 641 }
 642
 643 wxString wxHtmlHelpData::FindPageByName(const wxString& x)
 644 {
 645     int cnt;
 646     int i;
 647     wxFileSystem fsys;
 648     wxFSFile *f;
 649     wxString url(wxEmptyString);
 650
 651     /* 1. try to open given file: */
 652
 653     cnt = m_BookRecords.GetCount();
 654     for (i = 0; i < cnt; i++)
 655     {
 656         f = fsys.OpenFile(m_BookRecords[i].GetFullPath(x));
 657         if (f)
 658         {
 659             url = m_BookRecords[i].GetFullPath(x);
 660             delete f;
 661             return url;
 662         }
 663     }
 664
 665
 666     /* 2. try to find a book: */
 667
 668     for (i = 0; i < cnt; i++)
 669     {
 670         if (m_BookRecords[i].GetTitle() == x)
 671         {
 672             url = m_BookRecords[i].GetFullPath(m_BookRecords[i].GetStart());
 673             return url;
 674         }
 675     }
 676
 677     /* 3. try to find in contents: */
 678
 679     cnt = m_ContentsCnt;
 680     for (i = 0; i < cnt; i++)
 681     {
 682         if (wxStrcmp(m_Contents[i].m_Name, x) == 0)
 683         {
 684             url = m_Contents[i].GetFullPath();
 685             return url;
 686         }
 687     }
 688
 689
 690     /* 4. try to find in index: */
 691
 692     cnt = m_IndexCnt;
 693     for (i = 0; i < cnt; i++)
 694     {
 695         if (wxStrcmp(m_Index[i].m_Name, x) == 0)
 696         {
 697             url = m_Index[i].GetFullPath();
 698             return url;
 699         }
 700     }
 701
 702     return url;
 703 }
 704
 705 wxString wxHtmlHelpData::FindPageById(int id)
 706 {
 707     int i;
 708     wxString url(wxEmptyString);
 709
 710     for (i = 0; i < m_ContentsCnt; i++)
 711     {
 712         if (m_Contents[i].m_ID == id)
 713         {
 714             url = m_Contents[i].GetFullPath();
 715             return url;
 716         }
 717     }
 718
 719     return url;
 720 }
 721
 722 //----------------------------------------------------------------------------------
 723 // wxHtmlSearchStatus functions
 724 //----------------------------------------------------------------------------------
 725
 726 wxHtmlSearchStatus::wxHtmlSearchStatus(wxHtmlHelpData* data, const wxString& keyword,
 727                                        bool case_sensitive, bool whole_words_only,
 728                                        const wxString& book)
 729 {
 730     m_Data = data;
 731     m_Keyword = keyword;
 732     wxHtmlBookRecord* bookr = NULL;
 733     if (book != wxEmptyString)
 734     {
 735         // we have to search in a specific book. Find it first
 736         int i, cnt = data->m_BookRecords.GetCount();
 737         for (i = 0; i < cnt; i++)
 738             if (data->m_BookRecords[i].GetTitle() == book)
 739             {
 740                 bookr = &(data->m_BookRecords[i]);
 741                 m_CurIndex = bookr->GetContentsStart();
 742                 m_MaxIndex = bookr->GetContentsEnd();
 743                 break;
 744             }
 745         // check; we won't crash if the book doesn't exist, but it's Bad Anyway.
 746         wxASSERT(bookr);
 747     }
 748     if (! bookr)
 749     {
 750         // no book specified; search all books
 751         m_CurIndex = 0;
 752         m_MaxIndex = m_Data->m_ContentsCnt;
 753     }
 754     m_Engine.LookFor(keyword, case_sensitive, whole_words_only);
 755     m_Active = (m_CurIndex < m_MaxIndex);
 756     m_LastPage = NULL;
 757 }
 758
 759 bool wxHtmlSearchStatus::Search()
 760 {
 761     wxFSFile *file;
 762     int i = m_CurIndex;  // shortcut
 763     bool found = FALSE;
 764     wxChar *thepage;
 765
 766     if (!m_Active)
 767     {
 768         // sanity check. Illegal use, but we'll try to prevent a crash anyway
 769         wxASSERT(m_Active);
 770         return FALSE;
 771     }
 772
 773     m_Name = wxEmptyString;
 774     m_ContentsItem = NULL;
 775     thepage = m_Data->m_Contents[i].m_Page;
 776
 777     m_Active = (++m_CurIndex < m_MaxIndex);
 778     // check if it is same page with different anchor:
 779     if (m_LastPage != NULL)
 780     {
 781         wxChar *p1, *p2;
 782         for (p1 = thepage, p2 = m_LastPage;
 783              *p1 != 0 && *p1 != _T('#') && *p1 == *p2; p1++, p2++) {}
 784
 785         m_LastPage = thepage;
 786
 787         if (*p1 == 0 || *p1 == _T('#'))
 788             return FALSE;
 789     }
 790     else m_LastPage = thepage;
 791
 792     wxFileSystem fsys;
 793     file = fsys.OpenFile(m_Data->m_Contents[i].m_Book->GetFullPath(thepage));
 794     if (file)
 795     {
 796         if (m_Engine.Scan(file->GetStream()))
 797         {
 798             m_Name = m_Data->m_Contents[i].m_Name;
 799             m_ContentsItem = m_Data->m_Contents + i;
 800             found = TRUE;
 801         }
 802         delete file;
 803     }
 804     return found;
 805 }
 806
 807
 808
 809
 810
 811
 812
 813
 814 //--------------------------------------------------------------------------------
 815 // wxSearchEngine
 816 //--------------------------------------------------------------------------------
 817
 818 void wxSearchEngine::LookFor(const wxString& keyword, bool case_sensitive, bool whole_words_only)
 819 {
 820     m_CaseSensitive = case_sensitive;
 821     m_WholeWords = whole_words_only;
 822     if (m_Keyword) delete[] m_Keyword;
 823     m_Keyword = new wxChar[keyword.Length() + 1];
 824     wxStrcpy(m_Keyword, keyword.c_str());
 825
 826     if (!m_CaseSensitive)
 827     {
 828         for (int i = wxStrlen(m_Keyword) - 1; i >= 0; i--)
 829         {
 830             if ((m_Keyword[i] >= wxT('A')) && (m_Keyword[i] <= wxT('Z')))
 831                 m_Keyword[i] += wxT('a') - wxT('A');
 832         }
 833     }
 834 }
 835
 836
 837
 838 #define WHITESPACE(c)  (c == ' ' || c == '\n' || c == '\r' || c == '\t')
 839
 840 bool wxSearchEngine::Scan(wxInputStream *stream)
 841 {
 842     wxASSERT_MSG(m_Keyword != NULL, wxT("wxSearchEngine::LookFor must be called before scanning!"));
 843
 844     int i, j;
 845     int lng = stream ->GetSize();
 846     int wrd = wxStrlen(m_Keyword);
 847     bool found = FALSE;
 848     char *buf = new char[lng + 1];
 849     stream->Read(buf, lng);
 850     buf[lng] = 0;
 851
 852     if (!m_CaseSensitive)
 853         for (i = 0; i < lng; i++)
 854             if ((buf[i] >= 'A') && (buf[i] <= 'Z')) buf[i] += 'a' - 'A';
 855
 856     if (m_WholeWords)
 857     {
 858         for (i = 0; i < lng - wrd; i++)
 859         {
 860             if (WHITESPACE(buf[i])) continue;
 861             j = 0;
 862             while ((j < wrd) && (buf[i + j] == m_Keyword[j])) j++;
 863             if (j == wrd && WHITESPACE(buf[i + j])) { found = TRUE; break; }
 864         }
 865     }
 866
 867     else
 868     {
 869         for (i = 0; i < lng - wrd; i++)
 870         {
 871             j = 0;
 872             while ((j < wrd) && (buf[i + j] == m_Keyword[j])) j++;
 873             if (j == wrd) { found = TRUE; break; }
 874         }
 875     }
 876
 877     delete[] buf;
 878     return found;
 879 }
 880
 881
 882
 883 #endif