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)
  52 {
  53     char *writeptr = buf, *readptr = line;
  54
  55     while (*readptr != 0 && *readptr != '\r' && *readptr != '\n') *(writeptr++) = *(readptr++);
  56     *writeptr = 0;
  57     while (*readptr == '\r' || *readptr == '\n') readptr++;
  58     if (*readptr == 0) return NULL;
  59     else return readptr;
  60 }
  61
  62
  63
  64 static int LINKAGEMODE IndexCompareFunc(const void *a, const void *b)
  65 {
  66     return wxStrcmp(((wxHtmlContentsItem*)a)->m_Name, ((wxHtmlContentsItem*)b)->m_Name);
  67 }
  68
  69
  70 //-----------------------------------------------------------------------------
  71 // HP_Parser
  72 //-----------------------------------------------------------------------------
  73
  74 class HP_Parser : public wxHtmlParser
  75 {
  76 public:
  77     wxObject* GetProduct() { return NULL; }
  78 protected:
  79     virtual void AddText(const wxChar* WXUNUSED(txt)) {}
  80 };
  81
  82
  83 //-----------------------------------------------------------------------------
  84 // HP_TagHandler
  85 //-----------------------------------------------------------------------------
  86
  87 class HP_TagHandler : public wxHtmlTagHandler
  88 {
  89     private:
  90         wxString m_Name, m_Page;
  91         int m_Level;
  92         int m_ID;
  93         int m_Index;
  94         wxHtmlContentsItem *m_Items;
  95         int m_ItemsCnt;
  96         wxHtmlBookRecord *m_Book;
  97
  98     public:
  99         HP_TagHandler(wxHtmlBookRecord *b) : wxHtmlTagHandler()
 100             { m_Book = b; m_Items = NULL; m_ItemsCnt = 0; m_Name = m_Page = wxEmptyString;
 101               m_Level = 0; m_ID = -1; }
 102         wxString GetSupportedTags() { return wxT("UL,OBJECT,PARAM"); }
 103         bool HandleTag(const wxHtmlTag& tag);
 104         void WriteOut(wxHtmlContentsItem*& array, int& size);
 105         void ReadIn(wxHtmlContentsItem* array, int size);
 106 };
 107
 108
 109 bool HP_TagHandler::HandleTag(const wxHtmlTag& tag)
 110 {
 111     if (tag.GetName() == wxT("UL"))
 112     {
 113         m_Level++;
 114         ParseInner(tag);
 115         m_Level--;
 116         return TRUE;
 117     }
 118     else if (tag.GetName() == wxT("OBJECT"))
 119     {
 120         m_Name = m_Page = wxEmptyString;
 121         ParseInner(tag);
 122
 123 #if 0
 124          if (!m_Page.IsEmpty())
 125         /* Valid HHW's file may contain only two object tags:
 126
 127            <OBJECT type="text/site properties">
 128                <param name="ImageType" value="Folder">
 129            </OBJECT>
 130
 131            or
 132
 133            <OBJECT type="text/sitemap">
 134                <param name="Name" value="main page">
 135                <param name="Local" value="another.htm">
 136            </OBJECT>
 137
 138            We're interested in the latter. !m_Page.IsEmpty() is valid
 139            condition because text/site properties does not contain Local param
 140         */
 141 #endif
 142         if (tag.GetParam(wxT("TYPE")) == wxT("text/sitemap"))
 143         {
 144             if (m_ItemsCnt % wxHTML_REALLOC_STEP == 0)
 145                 m_Items = (wxHtmlContentsItem*) realloc(m_Items,
 146                                        (m_ItemsCnt + wxHTML_REALLOC_STEP) *
 147                                        sizeof(wxHtmlContentsItem));
 148
 149             m_Items[m_ItemsCnt].m_Level = m_Level;
 150             m_Items[m_ItemsCnt].m_ID = m_ID;
 151             m_Items[m_ItemsCnt].m_Page = new wxChar[m_Page.Length() + 1];
 152             wxStrcpy(m_Items[m_ItemsCnt].m_Page, m_Page.c_str());
 153             m_Items[m_ItemsCnt].m_Name = new wxChar [m_Name.Length() + 1];
 154             wxStrcpy(m_Items[m_ItemsCnt].m_Name, m_Name.c_str());
 155             m_Items[m_ItemsCnt].m_Book = m_Book;
 156             m_ItemsCnt++;
 157         }
 158
 159         return TRUE;
 160     }
 161     else
 162     { // "PARAM"
 163         if (m_Name == wxEmptyString && tag.GetParam(wxT("NAME")) == wxT("Name"))
 164             m_Name = tag.GetParam(wxT("VALUE"));
 165         if (tag.GetParam(wxT("NAME")) == wxT("Local"))
 166             m_Page = tag.GetParam(wxT("VALUE"));
 167         if (tag.GetParam(wxT("NAME")) == wxT("ID"))
 168             tag.GetParamAsInt(wxT("VALUE"), &m_ID);
 169         return FALSE;
 170     }
 171 }
 172
 173
 174
 175 void HP_TagHandler::WriteOut(wxHtmlContentsItem*& array, int& size)
 176 {
 177     array = m_Items;
 178     size = m_ItemsCnt;
 179     m_Items = NULL;
 180     m_ItemsCnt = 0;
 181 }
 182
 183 void HP_TagHandler::ReadIn(wxHtmlContentsItem* array, int size)
 184 {
 185     m_Items = array;
 186     m_ItemsCnt = size;
 187 }
 188
 189
 190
 191
 192 //-----------------------------------------------------------------------------
 193 // wxHtmlHelpData
 194 //-----------------------------------------------------------------------------
 195
 196 wxString wxHtmlBookRecord::GetFullPath(const wxString &page) const
 197 {
 198     if (wxIsAbsolutePath(page))
 199         return page;
 200     else
 201         return m_BasePath + page;
 202 }
 203
 204
 205
 206 IMPLEMENT_DYNAMIC_CLASS(wxHtmlHelpData, wxObject)
 207
 208 wxHtmlHelpData::wxHtmlHelpData()
 209 {
 210     m_TempPath = wxEmptyString;
 211
 212     m_Contents = NULL;
 213     m_ContentsCnt = 0;
 214     m_Index = NULL;
 215     m_IndexCnt = 0;
 216 }
 217
 218 wxHtmlHelpData::~wxHtmlHelpData()
 219 {
 220     int i;
 221
 222     m_BookRecords.Empty();
 223     if (m_Contents)
 224     {
 225         for (i = 0; i < m_ContentsCnt; i++)
 226         {
 227             delete[] m_Contents[i].m_Page;
 228             delete[] m_Contents[i].m_Name;
 229         }
 230         free(m_Contents);
 231     }
 232     if (m_Index)
 233     {
 234         for (i = 0; i < m_IndexCnt; i++)
 235         {
 236             delete[] m_Index[i].m_Page;
 237             delete[] m_Index[i].m_Name;
 238         }
 239         free(m_Index);
 240     }
 241 }
 242
 243 bool wxHtmlHelpData::LoadMSProject(wxHtmlBookRecord *book, wxFileSystem& fsys, const wxString& indexfile, const wxString& contentsfile)
 244 {
 245     wxFSFile *f;
 246     char *buf;
 247     int sz;
 248     wxString string;
 249
 250     HP_Parser parser;
 251     HP_TagHandler *handler = new HP_TagHandler(book);
 252     parser.AddTagHandler(handler);
 253
 254     f = ( contentsfile.IsEmpty() ? (wxFSFile*) NULL : fsys.OpenFile(contentsfile) );
 255     if (f)
 256     {
 257         sz = f->GetStream()->GetSize();
 258         buf = new char[sz + 1];
 259         buf[sz] = 0;
 260         f->GetStream()->Read(buf, sz);
 261         delete f;
 262         handler->ReadIn(m_Contents, m_ContentsCnt);
 263         parser.Parse(buf);
 264         handler->WriteOut(m_Contents, m_ContentsCnt);
 265         delete[] buf;
 266     }
 267     else
 268         wxLogError(_("Cannot open contents file: %s"), contentsfile.c_str());
 269
 270     f = ( indexfile.IsEmpty() ? (wxFSFile*) NULL : fsys.OpenFile(indexfile) );
 271     if (f)
 272     {
 273         sz = f->GetStream()->GetSize();
 274         buf = new char[sz + 1];
 275         buf[sz] = 0;
 276         f->GetStream()->Read(buf, sz);
 277         delete f;
 278         handler->ReadIn(m_Index, m_IndexCnt);
 279         parser.Parse(buf);
 280         handler->WriteOut(m_Index, m_IndexCnt);
 281         delete[] buf;
 282     }
 283     else if (!indexfile.IsEmpty())
 284         wxLogError(_("Cannot open index file: %s"), indexfile.c_str());
 285     return TRUE;
 286 }
 287
 288
 289
 290
 291 #if wxUSE_UNICODE
 292
 293 #define READ_STRING(f, s, lng) { char tmpc; for (int i = 0; i < lng; i++) { f->Read(&tmpc, 1); s[i] = (wxChar)tmpc;} }
 294 #define WRITE_STRING(f, s, lng) { char tmpc; for (int i = 0; i < lng; i++) { tmpc = (char)s[i]; f->Write(&tmpc, 1);} }
 295
 296 #else
 297
 298 #define READ_STRING(f, s, lng) f->Read(s, lng * sizeof(char));
 299 #define WRITE_STRING(f, s, lng) f->Write(s, lng * sizeof(char));
 300
 301 #endif
 302
 303
 304 #define CURRENT_CACHED_BOOK_VERSION     1
 305
 306 bool wxHtmlHelpData::LoadCachedBook(wxHtmlBookRecord *book, wxInputStream *f)
 307 {
 308     int i, st;
 309     wxInt32 x;
 310     wxInt32 version;
 311
 312     /* load header - version info : */
 313
 314     f->Read(&x, sizeof(x));
 315     version = wxINT32_SWAP_ON_BE(x);
 316
 317     if (version != CURRENT_CACHED_BOOK_VERSION)
 318     {
 319         wxLogError(_("Incorrect version of HTML help book"));
 320         return FALSE;
 321         // NOTE: when adding new version, please ensure backward compatibility!
 322     }
 323
 324     /* load contents : */
 325
 326     f->Read(&x, sizeof(x));
 327     st = m_ContentsCnt;
 328     m_ContentsCnt += wxINT32_SWAP_ON_BE(x);
 329     m_Contents = (wxHtmlContentsItem*) realloc(m_Contents,
 330                                                (m_ContentsCnt / wxHTML_REALLOC_STEP + 1) *
 331                                                wxHTML_REALLOC_STEP * sizeof(wxHtmlContentsItem));
 332     for (i = st; i < m_ContentsCnt; i++)
 333     {
 334         f->Read(&x, sizeof(x));
 335         m_Contents[i].m_Level = wxINT32_SWAP_ON_BE(x);
 336         f->Read(&x, sizeof(x));
 337         m_Contents[i].m_ID = wxINT32_SWAP_ON_BE(x);
 338         f->Read(&x, sizeof(x)); x = wxINT32_SWAP_ON_BE(x);
 339         m_Contents[i].m_Name = new wxChar[x];
 340         READ_STRING(f, m_Contents[i].m_Name, x);
 341         f->Read(&x, sizeof(x)); x = wxINT32_SWAP_ON_BE(x);
 342         m_Contents[i].m_Page = new wxChar[x];
 343         READ_STRING(f, m_Contents[i].m_Page, x);
 344         m_Contents[i].m_Book = book;
 345     }
 346
 347     /* load index : */
 348
 349     f->Read(&x, sizeof(x));
 350     st = m_IndexCnt;
 351     m_IndexCnt += wxINT32_SWAP_ON_BE(x);
 352     m_Index = (wxHtmlContentsItem*) realloc(m_Index, (m_IndexCnt / wxHTML_REALLOC_STEP + 1) *
 353                                                      wxHTML_REALLOC_STEP * sizeof(wxHtmlContentsItem));
 354     for (i = st; i < m_IndexCnt; i++)
 355     {
 356         f->Read(&x, sizeof(x)); x = wxINT32_SWAP_ON_BE(x);
 357         m_Index[i].m_Name = new wxChar[x];
 358         READ_STRING(f, m_Index[i].m_Name, x);
 359         f->Read(&x, sizeof(x)); x = wxINT32_SWAP_ON_BE(x);
 360         m_Index[i].m_Page = new wxChar[x];
 361         READ_STRING(f, m_Index[i].m_Page, x);
 362         m_Index[i].m_Book = book;
 363     }
 364     return TRUE;
 365 }
 366
 367
 368 bool wxHtmlHelpData::SaveCachedBook(wxHtmlBookRecord *book, wxOutputStream *f)
 369 {
 370     int i;
 371     wxInt32 x;
 372
 373     /* save header - version info : */
 374
 375     x = wxINT32_SWAP_ON_BE(CURRENT_CACHED_BOOK_VERSION);
 376     f->Write(&x, sizeof(x));
 377
 378     /* save contents : */
 379
 380     x = 0;
 381     for (i = 0; i < m_ContentsCnt; i++) if (m_Contents[i].m_Book == book && m_Contents[i].m_Level > 0) x++;
 382     x = wxINT32_SWAP_ON_BE(x);
 383     f->Write(&x, sizeof(x));
 384     for (i = 0; i < m_ContentsCnt; i++)
 385     {
 386         if (m_Contents[i].m_Book != book || m_Contents[i].m_Level == 0) continue;
 387         x = wxINT32_SWAP_ON_BE(m_Contents[i].m_Level);
 388         f->Write(&x, sizeof(x));
 389         x = wxINT32_SWAP_ON_BE(m_Contents[i].m_ID);
 390         f->Write(&x, sizeof(x));
 391         x = wxINT32_SWAP_ON_BE(wxStrlen(m_Contents[i].m_Name) + 1);
 392         f->Write(&x, sizeof(x));
 393         WRITE_STRING(f, m_Contents[i].m_Name, x);
 394         x = wxINT32_SWAP_ON_BE(wxStrlen(m_Contents[i].m_Page) + 1);
 395         f->Write(&x, sizeof(x));
 396         WRITE_STRING(f, m_Contents[i].m_Page, x);
 397     }
 398
 399     /* save index : */
 400
 401     x = 0;
 402     for (i = 0; i < m_IndexCnt; i++) if (m_Index[i].m_Book == book && m_Index[i].m_Level > 0) x++;
 403     x = wxINT32_SWAP_ON_BE(x);
 404     f->Write(&x, sizeof(x));
 405     for (i = 0; i < m_IndexCnt; i++)
 406     {
 407         if (m_Index[i].m_Book != book || m_Index[i].m_Level == 0) continue;
 408         x = wxINT32_SWAP_ON_BE(wxStrlen(m_Index[i].m_Name) + 1);
 409         f->Write(&x, sizeof(x));
 410         WRITE_STRING(f, m_Index[i].m_Name, x);
 411         x = wxINT32_SWAP_ON_BE(wxStrlen(m_Index[i].m_Page) + 1);
 412         f->Write(&x, sizeof(x));
 413         WRITE_STRING(f, m_Index[i].m_Page, x);
 414     }
 415     return TRUE;
 416 }
 417
 418
 419 void wxHtmlHelpData::SetTempDir(const wxString& path)
 420 {
 421     if (path == wxEmptyString) m_TempPath = path;
 422     else
 423     {
 424         if (wxIsAbsolutePath(path)) m_TempPath = path;
 425         else m_TempPath = wxGetCwd() + _T("/") + path;
 426
 427         if (m_TempPath[m_TempPath.Length() - 1] != _T('/'))
 428             m_TempPath << _T('/');
 429     }
 430 }
 431
 432
 433
 434 static wxString SafeFileName(const wxString& s)
 435 {
 436     wxString res(s);
 437     res.Replace(wxT("#"), wxT("_"));
 438     res.Replace(wxT(":"), wxT("_"));
 439     res.Replace(wxT("\\"), wxT("_"));
 440     res.Replace(wxT("/"), wxT("_"));
 441     return res;
 442 }
 443
 444 bool wxHtmlHelpData::AddBookParam(const wxFSFile& bookfile,
 445                                   wxFontEncoding encoding,
 446                                   const wxString& title, const wxString& contfile,
 447                                   const wxString& indexfile, const wxString& deftopic,
 448                                   const wxString& path)
 449 {
 450     wxFileSystem fsys;
 451     wxFSFile *fi;
 452     wxHtmlBookRecord *bookr;
 453
 454     int IndexOld = m_IndexCnt,
 455         ContentsOld = m_ContentsCnt;
 456
 457     if (! path.IsEmpty())
 458         fsys.ChangePathTo(path, TRUE);
 459
 460     bookr = new wxHtmlBookRecord(fsys.GetPath(), title, deftopic);
 461
 462     if (m_ContentsCnt % wxHTML_REALLOC_STEP == 0)
 463         m_Contents = (wxHtmlContentsItem*) realloc(m_Contents, (m_ContentsCnt + wxHTML_REALLOC_STEP) * sizeof(wxHtmlContentsItem));
 464     m_Contents[m_ContentsCnt].m_Level = 0;
 465     m_Contents[m_ContentsCnt].m_ID = 0;
 466     m_Contents[m_ContentsCnt].m_Page = new wxChar[deftopic.Length() + 1];
 467     wxStrcpy(m_Contents[m_ContentsCnt].m_Page, deftopic.c_str());
 468     m_Contents[m_ContentsCnt].m_Name = new wxChar [title.Length() + 1];
 469     wxStrcpy(m_Contents[m_ContentsCnt].m_Name, title.c_str());
 470     m_Contents[m_ContentsCnt].m_Book = bookr;
 471
 472     // store the contents index for later
 473     int cont_start = m_ContentsCnt++;
 474
 475     // Try to find cached binary versions:
 476     // 1. save file as book, but with .hhp.cached extension
 477     // 2. same as 1. but in temp path
 478     // 3. otherwise or if cache load failed, load it from MS.
 479
 480     fi = fsys.OpenFile(bookfile.GetLocation() + wxT(".cached"));
 481
 482     if (fi == NULL ||
 483           fi->GetModificationTime() < bookfile.GetModificationTime() ||
 484           !LoadCachedBook(bookr, fi->GetStream()))
 485     {
 486         if (fi != NULL) delete fi;
 487         fi = fsys.OpenFile(m_TempPath + wxFileNameFromPath(bookfile.GetLocation()) + wxT(".cached"));
 488         if (m_TempPath == wxEmptyString || fi == NULL ||
 489             fi->GetModificationTime() < bookfile.GetModificationTime() ||
 490             !LoadCachedBook(bookr, fi->GetStream()))
 491         {
 492             LoadMSProject(bookr, fsys, indexfile, contfile);
 493             if (m_TempPath != wxEmptyString)
 494             {
 495                 wxFileOutputStream *outs = new wxFileOutputStream(m_TempPath +
 496                                                   SafeFileName(wxFileNameFromPath(bookfile.GetLocation())) + wxT(".cached"));
 497                 SaveCachedBook(bookr, outs);
 498                 delete outs;
 499             }
 500         }
 501     }
 502
 503     if (fi != NULL) delete fi;
 504
 505     // Now store the contents range
 506     bookr->SetContentsRange(cont_start, m_ContentsCnt);
 507
 508     // Convert encoding, if neccessary:
 509     if (encoding != wxFONTENCODING_SYSTEM)
 510     {
 511         wxFontEncodingArray a = wxEncodingConverter::GetPlatformEquivalents(encoding);
 512         if (a.GetCount() != 0 && a[0] != encoding)
 513         {
 514             int i;
 515             wxEncodingConverter conv;
 516             conv.Init(encoding, a[0]);
 517
 518             for (i = IndexOld; i < m_IndexCnt; i++)
 519                 conv.Convert(m_Index[i].m_Name);
 520             for (i = ContentsOld; i < m_ContentsCnt; i++)
 521                 conv.Convert(m_Contents[i].m_Name);
 522         }
 523     }
 524
 525     m_BookRecords.Add(bookr);
 526     if (m_IndexCnt > 0)
 527         qsort(m_Index, m_IndexCnt, sizeof(wxHtmlContentsItem), IndexCompareFunc);
 528
 529     return TRUE;
 530 }
 531
 532
 533 bool wxHtmlHelpData::AddBook(const wxString& book)
 534 {
 535     if (book.Right(4).Lower() == wxT(".zip") ||
 536         book.Right(4).Lower() == wxT(".htb") /*html book*/)
 537
 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
 553
 554     else
 555     {
 556         wxFSFile *fi;
 557         wxFileSystem fsys;
 558         wxInputStream *s;
 559         wxString bookFull;
 560
 561         int sz;
 562         char *buff, *lineptr;
 563         char linebuf[300];
 564
 565         wxString title = _("noname"),
 566                  safetitle,
 567                  start = wxEmptyString,
 568                  contents = wxEmptyString,
 569                  index = wxEmptyString,
 570                  charset = wxEmptyString;
 571
 572 #if defined(__WXMAC__) && !defined(__DARWIN__)
 573         if (wxIsAbsolutePath(book)) bookFull = book;
 574         else bookFull = wxGetCwd() + book; // no slash or dot
 575         wxFileName fn( bookFull );
 576         bookFull = fn.GetFullPath( wxPATH_UNIX );
 577 #else
 578         if (wxIsAbsolutePath(book)) bookFull = book;
 579         else bookFull = wxGetCwd() + "/" + book;
 580 #endif
 581
 582         fi = fsys.OpenFile(bookFull);
 583         if (fi == NULL)
 584         {
 585             wxLogError(_("Cannot open HTML help book: %s"), bookFull.c_str());
 586             return FALSE;
 587         }
 588         fsys.ChangePathTo(bookFull);
 589         s = fi->GetStream();
 590         sz = s->GetSize();
 591         buff = new char[sz + 1];
 592         buff[sz] = 0;
 593         s->Read(buff, sz);
 594         lineptr = buff;
 595
 596         do {
 597             lineptr = ReadLine(lineptr, linebuf);
 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         delete[] buff;
 611
 612         wxFontEncoding enc;
 613         if (charset == wxEmptyString) enc = wxFONTENCODING_SYSTEM;
 614         else enc = wxTheFontMapper->CharsetToEncoding(charset);
 615         bool rtval = AddBookParam(*fi, enc,
 616                                   title, contents, index, start, fsys.GetPath());
 617         delete fi;
 618         return rtval;
 619     }
 620 }
 621
 622 wxString wxHtmlHelpData::FindPageByName(const wxString& x)
 623 {
 624     int cnt;
 625     int i;
 626     wxFileSystem fsys;
 627     wxFSFile *f;
 628     wxString url(wxEmptyString);
 629
 630     /* 1. try to open given file: */
 631
 632     cnt = m_BookRecords.GetCount();
 633     for (i = 0; i < cnt; i++)
 634     {
 635         f = fsys.OpenFile(m_BookRecords[i].GetFullPath(x));
 636         if (f)
 637         {
 638             url = m_BookRecords[i].GetFullPath(x);
 639             delete f;
 640             return url;
 641         }
 642     }
 643
 644
 645     /* 2. try to find a book: */
 646
 647     for (i = 0; i < cnt; i++)
 648     {
 649         if (m_BookRecords[i].GetTitle() == x)
 650         {
 651             url = m_BookRecords[i].GetFullPath(m_BookRecords[i].GetStart());
 652             return url;
 653         }
 654     }
 655
 656     /* 3. try to find in contents: */
 657
 658     cnt = m_ContentsCnt;
 659     for (i = 0; i < cnt; i++)
 660     {
 661         if (wxStrcmp(m_Contents[i].m_Name, x) == 0)
 662         {
 663             url = m_Contents[i].GetFullPath();
 664             return url;
 665         }
 666     }
 667
 668
 669     /* 4. try to find in index: */
 670
 671     cnt = m_IndexCnt;
 672     for (i = 0; i < cnt; i++)
 673     {
 674         if (wxStrcmp(m_Index[i].m_Name, x) == 0)
 675         {
 676             url = m_Index[i].GetFullPath();
 677             return url;
 678         }
 679     }
 680
 681     return url;
 682 }
 683
 684 wxString wxHtmlHelpData::FindPageById(int id)
 685 {
 686     int i;
 687     wxString url(wxEmptyString);
 688
 689     for (i = 0; i < m_ContentsCnt; i++)
 690     {
 691         if (m_Contents[i].m_ID == id)
 692         {
 693             url = m_Contents[i].GetFullPath();
 694             return url;
 695         }
 696     }
 697
 698     return url;
 699 }
 700
 701 //----------------------------------------------------------------------------------
 702 // wxHtmlSearchStatus functions
 703 //----------------------------------------------------------------------------------
 704
 705 wxHtmlSearchStatus::wxHtmlSearchStatus(wxHtmlHelpData* data, const wxString& keyword,
 706                                        bool case_sensitive, bool whole_words_only,
 707                                        const wxString& book)
 708 {
 709     m_Data = data;
 710     m_Keyword = keyword;
 711     wxHtmlBookRecord* bookr = NULL;
 712     if (book != wxEmptyString)
 713     {
 714         // we have to search in a specific book. Find it first
 715         int i, cnt = data->m_BookRecords.GetCount();
 716         for (i = 0; i < cnt; i++)
 717             if (data->m_BookRecords[i].GetTitle() == book)
 718             {
 719                 bookr = &(data->m_BookRecords[i]);
 720                 m_CurIndex = bookr->GetContentsStart();
 721                 m_MaxIndex = bookr->GetContentsEnd();
 722                 break;
 723             }
 724         // check; we won't crash if the book doesn't exist, but it's Bad Anyway.
 725         wxASSERT(bookr);
 726     }
 727     if (! bookr)
 728     {
 729         // no book specified; search all books
 730         m_CurIndex = 0;
 731         m_MaxIndex = m_Data->m_ContentsCnt;
 732     }
 733     m_Engine.LookFor(keyword, case_sensitive, whole_words_only);
 734     m_Active = (m_CurIndex < m_MaxIndex);
 735     m_LastPage = NULL;
 736 }
 737
 738 bool wxHtmlSearchStatus::Search()
 739 {
 740     wxFSFile *file;
 741     int i = m_CurIndex;  // shortcut
 742     bool found = FALSE;
 743     wxChar *thepage;
 744
 745     if (!m_Active)
 746     {
 747         // sanity check. Illegal use, but we'll try to prevent a crash anyway
 748         wxASSERT(m_Active);
 749         return FALSE;
 750     }
 751
 752     m_Name = wxEmptyString;
 753     m_ContentsItem = NULL;
 754     thepage = m_Data->m_Contents[i].m_Page;
 755
 756     m_Active = (++m_CurIndex < m_MaxIndex);
 757     // check if it is same page with different anchor:
 758     if (m_LastPage != NULL)
 759     {
 760         wxChar *p1, *p2;
 761         for (p1 = thepage, p2 = m_LastPage;
 762              *p1 != 0 && *p1 != _T('#') && *p1 == *p2; p1++, p2++) {}
 763
 764         m_LastPage = thepage;
 765
 766         if (*p1 == 0 || *p1 == _T('#'))
 767             return FALSE;
 768     }
 769     else m_LastPage = thepage;
 770
 771     wxFileSystem fsys;
 772     file = fsys.OpenFile(m_Data->m_Contents[i].m_Book->GetFullPath(thepage));
 773     if (file)
 774     {
 775         if (m_Engine.Scan(file->GetStream()))
 776         {
 777             m_Name = m_Data->m_Contents[i].m_Name;
 778             m_ContentsItem = m_Data->m_Contents + i;
 779             found = TRUE;
 780         }
 781         delete file;
 782     }
 783     return found;
 784 }
 785
 786
 787
 788
 789
 790
 791
 792
 793 //--------------------------------------------------------------------------------
 794 // wxSearchEngine
 795 //--------------------------------------------------------------------------------
 796
 797 void wxSearchEngine::LookFor(const wxString& keyword, bool case_sensitive, bool whole_words_only)
 798 {
 799     m_CaseSensitive = case_sensitive;
 800     m_WholeWords = whole_words_only;
 801     if (m_Keyword) delete[] m_Keyword;
 802     m_Keyword = new wxChar[keyword.Length() + 1];
 803     wxStrcpy(m_Keyword, keyword.c_str());
 804
 805     if (!m_CaseSensitive)
 806     {
 807         for (int i = wxStrlen(m_Keyword) - 1; i >= 0; i--)
 808         {
 809             if ((m_Keyword[i] >= wxT('A')) && (m_Keyword[i] <= wxT('Z')))
 810                 m_Keyword[i] += wxT('a') - wxT('A');
 811         }
 812     }
 813 }
 814
 815
 816
 817 #define WHITESPACE(c)  (c == ' ' || c == '\n' || c == '\r' || c == '\t')
 818
 819 bool wxSearchEngine::Scan(wxInputStream *stream)
 820 {
 821     wxASSERT_MSG(m_Keyword != NULL, wxT("wxSearchEngine::LookFor must be called before scanning!"));
 822
 823     int i, j;
 824     int lng = stream ->GetSize();
 825     int wrd = wxStrlen(m_Keyword);
 826     bool found = FALSE;
 827     char *buf = new char[lng + 1];
 828     stream->Read(buf, lng);
 829     buf[lng] = 0;
 830
 831     if (!m_CaseSensitive)
 832         for (i = 0; i < lng; i++)
 833             if ((buf[i] >= 'A') && (buf[i] <= 'Z')) buf[i] += 'a' - 'A';
 834
 835     if (m_WholeWords)
 836     {
 837         for (i = 0; i < lng - wrd; i++)
 838         {
 839             if (WHITESPACE(buf[i])) continue;
 840             j = 0;
 841             while ((j < wrd) && (buf[i + j] == m_Keyword[j])) j++;
 842             if (j == wrd && WHITESPACE(buf[i + j])) { found = TRUE; break; }
 843         }
 844     }
 845
 846     else
 847     {
 848         for (i = 0; i < lng - wrd; i++)
 849         {
 850             j = 0;
 851             while ((j < wrd) && (buf[i + j] == m_Keyword[j])) j++;
 852             if (j == wrd) { found = TRUE; break; }
 853         }
 854     }
 855
 856     delete[] buf;
 857     return found;
 858 }
 859
 860
 861
 862 #endif