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 extern "C" int LINKAGEMODE
  65 wxHtmlHelpIndexCompareFunc(const void *a, const void *b)
  66 {
  67     return wxStricmp(((wxHtmlContentsItem*)a)->m_Name, ((wxHtmlContentsItem*)b)->m_Name);
  68 }
  69
  70
  71 //-----------------------------------------------------------------------------
  72 // HP_Parser
  73 //-----------------------------------------------------------------------------
  74
  75 class HP_Parser : public wxHtmlParser
  76 {
  77 public:
  78     wxObject* GetProduct() { return NULL; }
  79 protected:
  80     virtual void AddText(const wxChar* WXUNUSED(txt)) {}
  81 };
  82
  83
  84 //-----------------------------------------------------------------------------
  85 // HP_TagHandler
  86 //-----------------------------------------------------------------------------
  87
  88 class HP_TagHandler : public wxHtmlTagHandler
  89 {
  90     private:
  91         wxString m_Name, m_Page;
  92         int m_Level;
  93         int m_ID;
  94         int m_Index;
  95         wxHtmlContentsItem *m_Items;
  96         int m_ItemsCnt;
  97         wxHtmlBookRecord *m_Book;
  98
  99     public:
 100         HP_TagHandler(wxHtmlBookRecord *b) : wxHtmlTagHandler()
 101             { m_Book = b; m_Items = NULL; m_ItemsCnt = 0; m_Name = m_Page = wxEmptyString;
 102               m_Level = 0; m_ID = -1; }
 103         wxString GetSupportedTags() { return wxT("UL,OBJECT,PARAM"); }
 104         bool HandleTag(const wxHtmlTag& tag);
 105         void WriteOut(wxHtmlContentsItem*& array, int& size);
 106         void ReadIn(wxHtmlContentsItem* array, int size);
 107 };
 108
 109
 110 bool HP_TagHandler::HandleTag(const wxHtmlTag& tag)
 111 {
 112     if (tag.GetName() == wxT("UL"))
 113     {
 114         m_Level++;
 115         ParseInner(tag);
 116         m_Level--;
 117         return TRUE;
 118     }
 119     else if (tag.GetName() == wxT("OBJECT"))
 120     {
 121         m_Name = m_Page = wxEmptyString;
 122         ParseInner(tag);
 123
 124 #if 0
 125          if (!m_Page.IsEmpty())
 126         /* Valid HHW's file may contain only two object tags:
 127
 128            <OBJECT type="text/site properties">
 129                <param name="ImageType" value="Folder">
 130            </OBJECT>
 131
 132            or
 133
 134            <OBJECT type="text/sitemap">
 135                <param name="Name" value="main page">
 136                <param name="Local" value="another.htm">
 137            </OBJECT>
 138
 139            We're interested in the latter. !m_Page.IsEmpty() is valid
 140            condition because text/site properties does not contain Local param
 141         */
 142 #endif
 143         if (tag.GetParam(wxT("TYPE")) == wxT("text/sitemap"))
 144         {
 145             if (m_ItemsCnt % wxHTML_REALLOC_STEP == 0)
 146                 m_Items = (wxHtmlContentsItem*) realloc(m_Items,
 147                                        (m_ItemsCnt + wxHTML_REALLOC_STEP) *
 148                                        sizeof(wxHtmlContentsItem));
 149
 150             m_Items[m_ItemsCnt].m_Level = m_Level;
 151             m_Items[m_ItemsCnt].m_ID = m_ID;
 152             m_Items[m_ItemsCnt].m_Page = new wxChar[m_Page.Length() + 1];
 153             wxStrcpy(m_Items[m_ItemsCnt].m_Page, m_Page.c_str());
 154             m_Items[m_ItemsCnt].m_Name = new wxChar [m_Name.Length() + 1];
 155             wxStrcpy(m_Items[m_ItemsCnt].m_Name, m_Name.c_str());
 156             m_Items[m_ItemsCnt].m_Book = m_Book;
 157             m_ItemsCnt++;
 158         }
 159
 160         return TRUE;
 161     }
 162     else
 163     { // "PARAM"
 164         if (m_Name == wxEmptyString && tag.GetParam(wxT("NAME")) == wxT("Name"))
 165             m_Name = tag.GetParam(wxT("VALUE"));
 166         if (tag.GetParam(wxT("NAME")) == wxT("Local"))
 167             m_Page = tag.GetParam(wxT("VALUE"));
 168         if (tag.GetParam(wxT("NAME")) == wxT("ID"))
 169             tag.GetParamAsInt(wxT("VALUE"), &m_ID);
 170         return FALSE;
 171     }
 172 }
 173
 174
 175
 176 void HP_TagHandler::WriteOut(wxHtmlContentsItem*& array, int& size)
 177 {
 178     array = m_Items;
 179     size = m_ItemsCnt;
 180     m_Items = NULL;
 181     m_ItemsCnt = 0;
 182 }
 183
 184 void HP_TagHandler::ReadIn(wxHtmlContentsItem* array, int size)
 185 {
 186     m_Items = array;
 187     m_ItemsCnt = size;
 188 }
 189
 190
 191
 192
 193 //-----------------------------------------------------------------------------
 194 // wxHtmlHelpData
 195 //-----------------------------------------------------------------------------
 196
 197 wxString wxHtmlBookRecord::GetFullPath(const wxString &page) const
 198 {
 199     if (wxIsAbsolutePath(page))
 200         return page;
 201     else
 202         return m_BasePath + page;
 203 }
 204
 205
 206
 207 IMPLEMENT_DYNAMIC_CLASS(wxHtmlHelpData, wxObject)
 208
 209 wxHtmlHelpData::wxHtmlHelpData()
 210 {
 211     m_TempPath = wxEmptyString;
 212
 213     m_Contents = NULL;
 214     m_ContentsCnt = 0;
 215     m_Index = NULL;
 216     m_IndexCnt = 0;
 217 }
 218
 219 wxHtmlHelpData::~wxHtmlHelpData()
 220 {
 221     int i;
 222
 223     m_BookRecords.Empty();
 224     if (m_Contents)
 225     {
 226         for (i = 0; i < m_ContentsCnt; i++)
 227         {
 228             delete[] m_Contents[i].m_Page;
 229             delete[] m_Contents[i].m_Name;
 230         }
 231         free(m_Contents);
 232     }
 233     if (m_Index)
 234     {
 235         for (i = 0; i < m_IndexCnt; i++)
 236         {
 237             delete[] m_Index[i].m_Page;
 238             delete[] m_Index[i].m_Name;
 239         }
 240         free(m_Index);
 241     }
 242 }
 243
 244 bool wxHtmlHelpData::LoadMSProject(wxHtmlBookRecord *book, wxFileSystem& fsys, const wxString& indexfile, const wxString& contentsfile)
 245 {
 246     wxFSFile *f;
 247     char *buf;
 248     int sz;
 249     wxString string;
 250
 251     HP_Parser parser;
 252     HP_TagHandler *handler = new HP_TagHandler(book);
 253     parser.AddTagHandler(handler);
 254
 255     f = ( contentsfile.IsEmpty() ? (wxFSFile*) NULL : fsys.OpenFile(contentsfile) );
 256     if (f)
 257     {
 258         sz = f->GetStream()->GetSize();
 259         buf = new char[sz + 1];
 260         buf[sz] = 0;
 261         f->GetStream()->Read(buf, sz);
 262         delete f;
 263         handler->ReadIn(m_Contents, m_ContentsCnt);
 264         parser.Parse(buf);
 265         handler->WriteOut(m_Contents, m_ContentsCnt);
 266         delete[] buf;
 267     }
 268     else
 269         wxLogError(_("Cannot open contents file: %s"), contentsfile.c_str());
 270
 271     f = ( indexfile.IsEmpty() ? (wxFSFile*) NULL : fsys.OpenFile(indexfile) );
 272     if (f)
 273     {
 274         sz = f->GetStream()->GetSize();
 275         buf = new char[sz + 1];
 276         buf[sz] = 0;
 277         f->GetStream()->Read(buf, sz);
 278         delete f;
 279         handler->ReadIn(m_Index, m_IndexCnt);
 280         parser.Parse(buf);
 281         handler->WriteOut(m_Index, m_IndexCnt);
 282         delete[] buf;
 283     }
 284     else if (!indexfile.IsEmpty())
 285         wxLogError(_("Cannot open index file: %s"), indexfile.c_str());
 286     return TRUE;
 287 }
 288
 289
 290
 291
 292 #if wxUSE_UNICODE
 293
 294 #define READ_STRING(f, s, lng) { char tmpc; for (int i = 0; i < lng; i++) { f->Read(&tmpc, 1); s[i] = (wxChar)tmpc;} }
 295 #define WRITE_STRING(f, s, lng) { char tmpc; for (int i = 0; i < lng; i++) { tmpc = (char)s[i]; f->Write(&tmpc, 1);} }
 296
 297 #else
 298
 299 #define READ_STRING(f, s, lng) f->Read(s, lng * sizeof(char));
 300 #define WRITE_STRING(f, s, lng) f->Write(s, lng * sizeof(char));
 301
 302 #endif
 303
 304
 305 #define CURRENT_CACHED_BOOK_VERSION     1
 306
 307 bool wxHtmlHelpData::LoadCachedBook(wxHtmlBookRecord *book, wxInputStream *f)
 308 {
 309     int i, st;
 310     wxInt32 x;
 311     wxInt32 version;
 312
 313     /* load header - version info : */
 314
 315     f->Read(&x, sizeof(x));
 316     version = wxINT32_SWAP_ON_BE(x);
 317
 318     if (version != CURRENT_CACHED_BOOK_VERSION)
 319     {
 320         wxLogError(_("Incorrect version of HTML help book"));
 321         return FALSE;
 322         // NOTE: when adding new version, please ensure backward compatibility!
 323     }
 324
 325     /* load contents : */
 326
 327     f->Read(&x, sizeof(x));
 328     st = m_ContentsCnt;
 329     m_ContentsCnt += wxINT32_SWAP_ON_BE(x);
 330     m_Contents = (wxHtmlContentsItem*) realloc(m_Contents,
 331                                                (m_ContentsCnt / wxHTML_REALLOC_STEP + 1) *
 332                                                wxHTML_REALLOC_STEP * sizeof(wxHtmlContentsItem));
 333     for (i = st; i < m_ContentsCnt; i++)
 334     {
 335         f->Read(&x, sizeof(x));
 336         m_Contents[i].m_Level = wxINT32_SWAP_ON_BE(x);
 337         f->Read(&x, sizeof(x));
 338         m_Contents[i].m_ID = wxINT32_SWAP_ON_BE(x);
 339         f->Read(&x, sizeof(x)); x = wxINT32_SWAP_ON_BE(x);
 340         m_Contents[i].m_Name = new wxChar[x];
 341         READ_STRING(f, m_Contents[i].m_Name, x);
 342         f->Read(&x, sizeof(x)); x = wxINT32_SWAP_ON_BE(x);
 343         m_Contents[i].m_Page = new wxChar[x];
 344         READ_STRING(f, m_Contents[i].m_Page, x);
 345         m_Contents[i].m_Book = book;
 346     }
 347
 348     /* load index : */
 349
 350     f->Read(&x, sizeof(x));
 351     st = m_IndexCnt;
 352     m_IndexCnt += wxINT32_SWAP_ON_BE(x);
 353     m_Index = (wxHtmlContentsItem*) realloc(m_Index, (m_IndexCnt / wxHTML_REALLOC_STEP + 1) *
 354                                                      wxHTML_REALLOC_STEP * sizeof(wxHtmlContentsItem));
 355     for (i = st; i < m_IndexCnt; i++)
 356     {
 357         f->Read(&x, sizeof(x)); x = wxINT32_SWAP_ON_BE(x);
 358         m_Index[i].m_Name = new wxChar[x];
 359         READ_STRING(f, m_Index[i].m_Name, x);
 360         f->Read(&x, sizeof(x)); x = wxINT32_SWAP_ON_BE(x);
 361         m_Index[i].m_Page = new wxChar[x];
 362         READ_STRING(f, m_Index[i].m_Page, x);
 363         m_Index[i].m_Book = book;
 364     }
 365     return TRUE;
 366 }
 367
 368
 369 bool wxHtmlHelpData::SaveCachedBook(wxHtmlBookRecord *book, wxOutputStream *f)
 370 {
 371     int i;
 372     wxInt32 x;
 373
 374     /* save header - version info : */
 375
 376     x = wxINT32_SWAP_ON_BE(CURRENT_CACHED_BOOK_VERSION);
 377     f->Write(&x, sizeof(x));
 378
 379     /* save contents : */
 380
 381     x = 0;
 382     for (i = 0; i < m_ContentsCnt; i++) if (m_Contents[i].m_Book == book && m_Contents[i].m_Level > 0) x++;
 383     x = wxINT32_SWAP_ON_BE(x);
 384     f->Write(&x, sizeof(x));
 385     for (i = 0; i < m_ContentsCnt; i++)
 386     {
 387         if (m_Contents[i].m_Book != book || m_Contents[i].m_Level == 0) continue;
 388         x = wxINT32_SWAP_ON_BE(m_Contents[i].m_Level);
 389         f->Write(&x, sizeof(x));
 390         x = wxINT32_SWAP_ON_BE(m_Contents[i].m_ID);
 391         f->Write(&x, sizeof(x));
 392         x = wxINT32_SWAP_ON_BE(wxStrlen(m_Contents[i].m_Name) + 1);
 393         f->Write(&x, sizeof(x));
 394         WRITE_STRING(f, m_Contents[i].m_Name, x);
 395         x = wxINT32_SWAP_ON_BE(wxStrlen(m_Contents[i].m_Page) + 1);
 396         f->Write(&x, sizeof(x));
 397         WRITE_STRING(f, m_Contents[i].m_Page, x);
 398     }
 399
 400     /* save index : */
 401
 402     x = 0;
 403     for (i = 0; i < m_IndexCnt; i++) if (m_Index[i].m_Book == book && m_Index[i].m_Level > 0) x++;
 404     x = wxINT32_SWAP_ON_BE(x);
 405     f->Write(&x, sizeof(x));
 406     for (i = 0; i < m_IndexCnt; i++)
 407     {
 408         if (m_Index[i].m_Book != book || m_Index[i].m_Level == 0) continue;
 409         x = wxINT32_SWAP_ON_BE(wxStrlen(m_Index[i].m_Name) + 1);
 410         f->Write(&x, sizeof(x));
 411         WRITE_STRING(f, m_Index[i].m_Name, x);
 412         x = wxINT32_SWAP_ON_BE(wxStrlen(m_Index[i].m_Page) + 1);
 413         f->Write(&x, sizeof(x));
 414         WRITE_STRING(f, m_Index[i].m_Page, x);
 415     }
 416     return TRUE;
 417 }
 418
 419
 420 void wxHtmlHelpData::SetTempDir(const wxString& path)
 421 {
 422     if (path == wxEmptyString) m_TempPath = path;
 423     else
 424     {
 425         if (wxIsAbsolutePath(path)) m_TempPath = path;
 426         else m_TempPath = wxGetCwd() + _T("/") + path;
 427
 428         if (m_TempPath[m_TempPath.Length() - 1] != _T('/'))
 429             m_TempPath << _T('/');
 430     }
 431 }
 432
 433
 434
 435 static wxString SafeFileName(const wxString& s)
 436 {
 437     wxString res(s);
 438     res.Replace(wxT("#"), wxT("_"));
 439     res.Replace(wxT(":"), wxT("_"));
 440     res.Replace(wxT("\\"), wxT("_"));
 441     res.Replace(wxT("/"), wxT("_"));
 442     return res;
 443 }
 444
 445 bool wxHtmlHelpData::AddBookParam(const wxFSFile& bookfile,
 446                                   wxFontEncoding encoding,
 447                                   const wxString& title, const wxString& contfile,
 448                                   const wxString& indexfile, const wxString& deftopic,
 449                                   const wxString& path)
 450 {
 451     wxFileSystem fsys;
 452     wxFSFile *fi;
 453     wxHtmlBookRecord *bookr;
 454
 455     int IndexOld = m_IndexCnt,
 456         ContentsOld = m_ContentsCnt;
 457
 458     if (! path.IsEmpty())
 459         fsys.ChangePathTo(path, TRUE);
 460
 461     bookr = new wxHtmlBookRecord(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     {
 540         wxFileSystem fsys;
 541         wxString s;
 542         bool rt = FALSE;
 543
 544         s = fsys.FindFirst(book + wxT("#zip:") + wxT("*.hhp"), wxFILE);
 545         while (!s.IsEmpty())
 546         {
 547             if (AddBook(s)) rt = TRUE;
 548             s = fsys.FindNext();
 549         }
 550
 551         return rt;
 552     }
 553
 554
 555     else
 556     {
 557         wxFSFile *fi;
 558         wxFileSystem fsys;
 559         wxInputStream *s;
 560         wxString bookFull;
 561
 562         int sz;
 563         char *buff, *lineptr;
 564         char linebuf[300];
 565
 566         wxString title = _("noname"),
 567                  safetitle,
 568                  start = wxEmptyString,
 569                  contents = wxEmptyString,
 570                  index = wxEmptyString,
 571                  charset = wxEmptyString;
 572
 573 #if defined(__WXMAC__) && !defined(__DARWIN__)
 574         if (wxIsAbsolutePath(book)) bookFull = book;
 575         else bookFull = wxGetCwd() + book; // no slash or dot
 576         wxFileName fn( bookFull );
 577         bookFull = fn.GetFullPath( wxPATH_UNIX );
 578 #else
 579         if (wxIsAbsolutePath(book)) bookFull = book;
 580         else bookFull = wxGetCwd() + "/" + book;
 581 #endif
 582
 583         fi = fsys.OpenFile(bookFull);
 584         if (fi == NULL)
 585         {
 586             wxLogError(_("Cannot open HTML help book: %s"), bookFull.c_str());
 587             return FALSE;
 588         }
 589         fsys.ChangePathTo(bookFull);
 590         s = fi->GetStream();
 591         sz = s->GetSize();
 592         buff = new char[sz + 1];
 593         buff[sz] = 0;
 594         s->Read(buff, sz);
 595         lineptr = buff;
 596
 597         do {
 598             lineptr = ReadLine(lineptr, linebuf);
 599
 600             if (strstr(linebuf, "Title=") == linebuf)
 601                 title = linebuf + strlen("Title=");
 602             if (strstr(linebuf, "Default topic=") == linebuf)
 603                 start = linebuf + strlen("Default topic=");
 604             if (strstr(linebuf, "Index file=") == linebuf)
 605                 index = linebuf + strlen("Index file=");
 606             if (strstr(linebuf, "Contents file=") == linebuf)
 607                 contents = linebuf + strlen("Contents file=");
 608             if (strstr(linebuf, "Charset=") == linebuf)
 609                 charset = linebuf + strlen("Charset=");
 610         } while (lineptr != NULL);
 611         delete[] buff;
 612
 613         wxFontEncoding enc;
 614         if (charset == wxEmptyString) enc = wxFONTENCODING_SYSTEM;
 615         else enc = wxTheFontMapper->CharsetToEncoding(charset);
 616         bool rtval = AddBookParam(*fi, enc,
 617                                   title, contents, index, start, fsys.GetPath());
 618         delete fi;
 619         return rtval;
 620     }
 621 }
 622
 623 wxString wxHtmlHelpData::FindPageByName(const wxString& x)
 624 {
 625     int cnt;
 626     int i;
 627     wxFileSystem fsys;
 628     wxFSFile *f;
 629     wxString url(wxEmptyString);
 630
 631     /* 1. try to open given file: */
 632
 633     cnt = m_BookRecords.GetCount();
 634     for (i = 0; i < cnt; i++)
 635     {
 636         f = fsys.OpenFile(m_BookRecords[i].GetFullPath(x));
 637         if (f)
 638         {
 639             url = m_BookRecords[i].GetFullPath(x);
 640             delete f;
 641             return url;
 642         }
 643     }
 644
 645
 646     /* 2. try to find a book: */
 647
 648     for (i = 0; i < cnt; i++)
 649     {
 650         if (m_BookRecords[i].GetTitle() == x)
 651         {
 652             url = m_BookRecords[i].GetFullPath(m_BookRecords[i].GetStart());
 653             return url;
 654         }
 655     }
 656
 657     /* 3. try to find in contents: */
 658
 659     cnt = m_ContentsCnt;
 660     for (i = 0; i < cnt; i++)
 661     {
 662         if (wxStrcmp(m_Contents[i].m_Name, x) == 0)
 663         {
 664             url = m_Contents[i].GetFullPath();
 665             return url;
 666         }
 667     }
 668
 669
 670     /* 4. try to find in index: */
 671
 672     cnt = m_IndexCnt;
 673     for (i = 0; i < cnt; i++)
 674     {
 675         if (wxStrcmp(m_Index[i].m_Name, x) == 0)
 676         {
 677             url = m_Index[i].GetFullPath();
 678             return url;
 679         }
 680     }
 681
 682     return url;
 683 }
 684
 685 wxString wxHtmlHelpData::FindPageById(int id)
 686 {
 687     int i;
 688     wxString url(wxEmptyString);
 689
 690     for (i = 0; i < m_ContentsCnt; i++)
 691     {
 692         if (m_Contents[i].m_ID == id)
 693         {
 694             url = m_Contents[i].GetFullPath();
 695             return url;
 696         }
 697     }
 698
 699     return url;
 700 }
 701
 702 //----------------------------------------------------------------------------------
 703 // wxHtmlSearchStatus functions
 704 //----------------------------------------------------------------------------------
 705
 706 wxHtmlSearchStatus::wxHtmlSearchStatus(wxHtmlHelpData* data, const wxString& keyword,
 707                                        bool case_sensitive, bool whole_words_only,
 708                                        const wxString& book)
 709 {
 710     m_Data = data;
 711     m_Keyword = keyword;
 712     wxHtmlBookRecord* bookr = NULL;
 713     if (book != wxEmptyString)
 714     {
 715         // we have to search in a specific book. Find it first
 716         int i, cnt = data->m_BookRecords.GetCount();
 717         for (i = 0; i < cnt; i++)
 718             if (data->m_BookRecords[i].GetTitle() == book)
 719             {
 720                 bookr = &(data->m_BookRecords[i]);
 721                 m_CurIndex = bookr->GetContentsStart();
 722                 m_MaxIndex = bookr->GetContentsEnd();
 723                 break;
 724             }
 725         // check; we won't crash if the book doesn't exist, but it's Bad Anyway.
 726         wxASSERT(bookr);
 727     }
 728     if (! bookr)
 729     {
 730         // no book specified; search all books
 731         m_CurIndex = 0;
 732         m_MaxIndex = m_Data->m_ContentsCnt;
 733     }
 734     m_Engine.LookFor(keyword, case_sensitive, whole_words_only);
 735     m_Active = (m_CurIndex < m_MaxIndex);
 736     m_LastPage = NULL;
 737 }
 738
 739 bool wxHtmlSearchStatus::Search()
 740 {
 741     wxFSFile *file;
 742     int i = m_CurIndex;  // shortcut
 743     bool found = FALSE;
 744     wxChar *thepage;
 745
 746     if (!m_Active)
 747     {
 748         // sanity check. Illegal use, but we'll try to prevent a crash anyway
 749         wxASSERT(m_Active);
 750         return FALSE;
 751     }
 752
 753     m_Name = wxEmptyString;
 754     m_ContentsItem = NULL;
 755     thepage = m_Data->m_Contents[i].m_Page;
 756
 757     m_Active = (++m_CurIndex < m_MaxIndex);
 758     // check if it is same page with different anchor:
 759     if (m_LastPage != NULL)
 760     {
 761         wxChar *p1, *p2;
 762         for (p1 = thepage, p2 = m_LastPage;
 763              *p1 != 0 && *p1 != _T('#') && *p1 == *p2; p1++, p2++) {}
 764
 765         m_LastPage = thepage;
 766
 767         if (*p1 == 0 || *p1 == _T('#'))
 768             return FALSE;
 769     }
 770     else m_LastPage = thepage;
 771
 772     wxFileSystem fsys;
 773     file = fsys.OpenFile(m_Data->m_Contents[i].m_Book->GetFullPath(thepage));
 774     if (file)
 775     {
 776         if (m_Engine.Scan(file->GetStream()))
 777         {
 778             m_Name = m_Data->m_Contents[i].m_Name;
 779             m_ContentsItem = m_Data->m_Contents + i;
 780             found = TRUE;
 781         }
 782         delete file;
 783     }
 784     return found;
 785 }
 786
 787
 788
 789
 790
 791
 792
 793
 794 //--------------------------------------------------------------------------------
 795 // wxSearchEngine
 796 //--------------------------------------------------------------------------------
 797
 798 void wxSearchEngine::LookFor(const wxString& keyword, bool case_sensitive, bool whole_words_only)
 799 {
 800     m_CaseSensitive = case_sensitive;
 801     m_WholeWords = whole_words_only;
 802     if (m_Keyword) delete[] m_Keyword;
 803     m_Keyword = new wxChar[keyword.Length() + 1];
 804     wxStrcpy(m_Keyword, keyword.c_str());
 805
 806     if (!m_CaseSensitive)
 807     {
 808         for (int i = wxStrlen(m_Keyword) - 1; i >= 0; i--)
 809         {
 810             if ((m_Keyword[i] >= wxT('A')) && (m_Keyword[i] <= wxT('Z')))
 811                 m_Keyword[i] += wxT('a') - wxT('A');
 812         }
 813     }
 814 }
 815
 816
 817
 818 #define WHITESPACE(c)  (c == ' ' || c == '\n' || c == '\r' || c == '\t')
 819
 820 bool wxSearchEngine::Scan(wxInputStream *stream)
 821 {
 822     wxASSERT_MSG(m_Keyword != NULL, wxT("wxSearchEngine::LookFor must be called before scanning!"));
 823
 824     int i, j;
 825     int lng = stream ->GetSize();
 826     int wrd = wxStrlen(m_Keyword);
 827     bool found = FALSE;
 828     char *buf = new char[lng + 1];
 829     stream->Read(buf, lng);
 830     buf[lng] = 0;
 831
 832     if (!m_CaseSensitive)
 833         for (i = 0; i < lng; i++)
 834             if ((buf[i] >= 'A') && (buf[i] <= 'Z')) buf[i] += 'a' - 'A';
 835
 836     if (m_WholeWords)
 837     {
 838         for (i = 0; i < lng - wrd; i++)
 839         {
 840             if (WHITESPACE(buf[i])) continue;
 841             j = 0;
 842             while ((j < wrd) && (buf[i + j] == m_Keyword[j])) j++;
 843             if (j == wrd && WHITESPACE(buf[i + j])) { found = TRUE; break; }
 844         }
 845     }
 846
 847     else
 848     {
 849         for (i = 0; i < lng - wrd; i++)
 850         {
 851             j = 0;
 852             while ((j < wrd) && (buf[i + j] == m_Keyword[j])) j++;
 853             if (j == wrd) { found = TRUE; break; }
 854         }
 855     }
 856
 857     delete[] buf;
 858     return found;
 859 }
 860
 861
 862
 863 #endif