src/html/helpdata.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        helpdata.cpp
   3 // Purpose:     wxHtmlHelpData
   4 // Notes:       Based on htmlhelp.cpp, implementing a monolithic
   5 //              HTML Help controller class,  by Vaclav Slavik
   6 // Author:      Harm van der Heijden and Vaclav Slavik
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) Harm van der Heijden and Vaclav Slavik
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 #ifdef __GNUG__
  13 #pragma implementation
  14 #endif
  15
  16 // For compilers that support precompilation, includes "wx.h".
  17 #include "wx/wxprec.h"
  18
  19 #ifdef __BORLANDC__
  20 #pragma hdrstop
  21 #endif
  22
  23 #include "wx/defs.h"
  24
  25 #if wxUSE_HTML
  26
  27 #ifndef WXPRECOMP
  28 #include "wx/wx.h"
  29 #endif
  30
  31 #include "wx/html/helpdata.h"
  32 #include "wx/tokenzr.h"
  33 #include "wx/wfstream.h"
  34 #include "wx/busyinfo.h"
  35 #include "wx/encconv.h"
  36 #include "wx/fontmap.h"
  37 #include "wx/log.h"
  38 #include "wx/html/htmlpars.h"
  39 #include "wx/html/htmldefs.h"
  40
  41 #include "wx/arrimpl.cpp"
  42 WX_DEFINE_OBJARRAY(wxHtmlBookRecArray)
  43
  44 //-----------------------------------------------------------------------------
  45 // static helper functions
  46 //-----------------------------------------------------------------------------
  47
  48 // Reads one line, stores it into buf and returns pointer to new line or NULL.
  49 static char* ReadLine(char *line, char *buf)
  50 {
  51     char *writeptr = buf, *readptr = line;
  52
  53     while (*readptr != 0 && *readptr != '\r' && *readptr != '\n') *(writeptr++) = *(readptr++);
  54     *writeptr = 0;
  55     while (*readptr == '\r' || *readptr == '\n') readptr++;
  56     if (*readptr == 0) return NULL;
  57     else return readptr;
  58 }
  59
  60
  61
  62 static int LINKAGEMODE IndexCompareFunc(const void *a, const void *b)
  63 {
  64     return wxStrcmp(((wxHtmlContentsItem*)a) -> m_Name, ((wxHtmlContentsItem*)b) -> m_Name);
  65 }
  66
  67
  68 //-----------------------------------------------------------------------------
  69 // HP_Parser
  70 //-----------------------------------------------------------------------------
  71
  72 class HP_Parser : public wxHtmlParser
  73 {
  74     public:
  75         void AddText(const char* WXUNUSED(text)) { }
  76         wxObject* GetProduct() { return NULL; }
  77 };
  78
  79
  80 //-----------------------------------------------------------------------------
  81 // HP_TagHandler
  82 //-----------------------------------------------------------------------------
  83
  84 class HP_TagHandler : public wxHtmlTagHandler
  85 {
  86     private:
  87         wxString m_Name, m_Page;
  88         int m_Level;
  89         int m_ID;
  90         int m_Index;
  91         wxHtmlContentsItem *m_Items;
  92         int m_ItemsCnt;
  93         wxHtmlBookRecord *m_Book;
  94
  95     public:
  96         HP_TagHandler(wxHtmlBookRecord *b) : wxHtmlTagHandler() {m_Book = b; m_Items = NULL; m_ItemsCnt = 0; m_Name = m_Page = wxEmptyString; m_Level = 0; }
  97         wxString GetSupportedTags() { return wxT("UL,OBJECT,PARAM"); }
  98         bool HandleTag(const wxHtmlTag& tag);
  99         void WriteOut(wxHtmlContentsItem*& array, int& size);
 100         void ReadIn(wxHtmlContentsItem* array, int size);
 101 };
 102
 103
 104 bool HP_TagHandler::HandleTag(const wxHtmlTag& tag)
 105 {
 106     if (tag.GetName() == wxT("UL")) {
 107         m_Level++;
 108         ParseInner(tag);
 109         m_Level--;
 110         return TRUE;
 111     }
 112     else if (tag.GetName() == wxT("OBJECT")) {
 113         m_Name = m_Page = wxEmptyString;
 114         ParseInner(tag);
 115
 116         if (!m_Page.IsEmpty())
 117         /* should be 'if (tag.GetParam("TYPE") == "text/sitemap")'
 118            but this works fine. Valid HHW's file may contain only two
 119            object tags:
 120
 121            <OBJECT type="text/site properties">
 122                <param name="ImageType" value="Folder">
 123            </OBJECT>
 124
 125            or
 126
 127                <OBJECT type="text/sitemap">
 128                        <param name="Name" value="main page">
 129                        <param name="Local" value="another.htm">
 130                    </OBJECT>
 131
 132            We're interested in the latter. !m_Page.IsEmpty() is valid
 133            condition because text/site properties does not contain Local param
 134         */
 135         {
 136             if (m_ItemsCnt % wxHTML_REALLOC_STEP == 0)
 137                 m_Items = (wxHtmlContentsItem*) realloc(m_Items, (m_ItemsCnt + wxHTML_REALLOC_STEP) * sizeof(wxHtmlContentsItem));
 138             m_Items[m_ItemsCnt].m_Level = m_Level;
 139             m_Items[m_ItemsCnt].m_ID = m_ID;
 140             m_Items[m_ItemsCnt].m_Page = new wxChar[m_Page.Length() + 1];
 141             wxStrcpy(m_Items[m_ItemsCnt].m_Page, m_Page.c_str());
 142             m_Items[m_ItemsCnt].m_Name = new wxChar [m_Name.Length() + 1];
 143             wxStrcpy(m_Items[m_ItemsCnt].m_Name, m_Name.c_str());
 144             m_Items[m_ItemsCnt].m_Book = m_Book;
 145             m_ItemsCnt++;
 146         }
 147
 148         return TRUE;
 149     }
 150     else { // "PARAM"
 151         if (m_Name == wxEmptyString && tag.GetParam(wxT("NAME")) == wxT("Name")) m_Name = tag.GetParam(wxT("VALUE"));
 152         if (tag.GetParam(wxT("NAME")) == wxT("Local")) m_Page = tag.GetParam(wxT("VALUE"));
 153         if (tag.GetParam(wxT("NAME")) == wxT("ID")) tag.ScanParam(wxT("VALUE"), wxT("%i"), &m_ID);
 154         return FALSE;
 155     }
 156 }
 157
 158
 159
 160 void HP_TagHandler::WriteOut(wxHtmlContentsItem*& array, int& size)
 161 {
 162     array = m_Items;
 163     size = m_ItemsCnt;
 164     m_Items = NULL;
 165     m_ItemsCnt = 0;
 166 }
 167
 168 void HP_TagHandler::ReadIn(wxHtmlContentsItem* array, int size)
 169 {
 170     m_Items = array;
 171     m_ItemsCnt = size;
 172 }
 173
 174
 175
 176
 177 //-----------------------------------------------------------------------------
 178 // wxHtmlHelpData
 179 //-----------------------------------------------------------------------------
 180
 181 IMPLEMENT_DYNAMIC_CLASS(wxHtmlHelpData, wxObject)
 182
 183 wxHtmlHelpData::wxHtmlHelpData()
 184 {
 185     m_TempPath = wxEmptyString;
 186
 187     m_Contents = NULL;
 188     m_ContentsCnt = 0;
 189     m_Index = NULL;
 190     m_IndexCnt = 0;
 191 }
 192
 193 wxHtmlHelpData::~wxHtmlHelpData()
 194 {
 195     int i;
 196
 197     m_BookRecords.Empty();
 198     if (m_Contents) {
 199         for (i = 0; i < m_ContentsCnt; i++) {
 200             delete[] m_Contents[i].m_Page;
 201             delete[] m_Contents[i].m_Name;
 202         }
 203         free(m_Contents);
 204     }
 205     if (m_Index) {
 206         for (i = 0; i < m_IndexCnt; i++) {
 207             delete[] m_Index[i].m_Page;
 208             delete[] m_Index[i].m_Name;
 209         }
 210         free(m_Index);
 211     }
 212 }
 213
 214 bool wxHtmlHelpData::LoadMSProject(wxHtmlBookRecord *book, wxFileSystem& fsys, const wxString& indexfile, const wxString& contentsfile)
 215 {
 216     wxFSFile *f;
 217     char *buf;
 218     int sz;
 219     wxString string;
 220
 221     HP_Parser parser;
 222     HP_TagHandler *handler = new HP_TagHandler(book);
 223     parser.AddTagHandler(handler);
 224
 225     f = ( contentsfile.IsEmpty() ? 0 : fsys.OpenFile(contentsfile) );
 226     if (f) {
 227         sz = f -> GetStream() -> GetSize();
 228         buf = new char[sz + 1];
 229         buf[sz] = 0;
 230         f -> GetStream() -> Read(buf, sz);
 231         delete f;
 232         handler -> ReadIn(m_Contents, m_ContentsCnt);
 233         parser.Parse(buf);
 234         handler -> WriteOut(m_Contents, m_ContentsCnt);
 235         delete[] buf;
 236     }
 237     else
 238         wxLogError(_("Cannot open contents file: %s"), contentsfile.mb_str());
 239
 240     f = ( indexfile.IsEmpty() ? 0 : fsys.OpenFile(indexfile) );
 241     if (f) {
 242         sz = f -> GetStream() -> GetSize();
 243         buf = new char[sz + 1];
 244         buf[sz] = 0;
 245         f -> GetStream() -> Read(buf, sz);
 246         delete f;
 247         handler -> ReadIn(m_Index, m_IndexCnt);
 248         parser.Parse(buf);
 249         handler -> WriteOut(m_Index, m_IndexCnt);
 250         delete[] buf;
 251     }
 252     else
 253         wxLogError(_("Cannot open index file: %s"), indexfile.mb_str());
 254     return TRUE;
 255 }
 256
 257
 258
 259
 260 #if wxUSE_UNICODE
 261
 262 #define READ_STRING(f, s, lng) { char tmpc; for (int i = 0; i < lng; i++) { f -> Read(&tmpc, 1); s[i] = (wxChar)tmpc;} }
 263 #define WRITE_STRING(f, s, lng) { char tmpc; for (int i = 0; i < lng; i++) { tmpc = (char)s[i]; f -> Write(&tmpc, 1);} }
 264
 265 #else
 266
 267 #define READ_STRING(f, s, lng) f -> Read(s, lng * sizeof(char));
 268 #define WRITE_STRING(f, s, lng) f -> Write(s, lng * sizeof(char));
 269
 270 #endif
 271
 272
 273 #define CURRENT_CACHED_BOOK_VERSION     1
 274
 275 bool wxHtmlHelpData::LoadCachedBook(wxHtmlBookRecord *book, wxInputStream *f)
 276 {
 277     int i, st;
 278     wxInt32 x;
 279     wxInt32 version;
 280
 281     /* load header - version info : */
 282
 283     f -> Read(&x, sizeof(x));
 284     version = wxINT32_SWAP_ON_BE(x);
 285
 286     if (version != CURRENT_CACHED_BOOK_VERSION)
 287     {
 288         wxLogError(_("Incorrect version of HTML help book"));
 289         return FALSE;
 290         // NOTE: when adding new version, please ensure backward compatibility!
 291     }
 292
 293     /* load contents : */
 294
 295     f -> Read(&x, sizeof(x));
 296     st = m_ContentsCnt;
 297     m_ContentsCnt += wxINT32_SWAP_ON_BE(x);
 298     m_Contents = (wxHtmlContentsItem*) realloc(m_Contents,
 299                                                (m_ContentsCnt / wxHTML_REALLOC_STEP + 1) *
 300                                                wxHTML_REALLOC_STEP * sizeof(wxHtmlContentsItem));
 301     for (i = st; i < m_ContentsCnt; i++) {
 302         f -> Read(&x, sizeof(x));
 303         m_Contents[i].m_Level = wxINT32_SWAP_ON_BE(x);
 304         f -> Read(&x, sizeof(x));
 305         m_Contents[i].m_ID = wxINT32_SWAP_ON_BE(x);
 306         f -> Read(&x, sizeof(x)); x = wxINT32_SWAP_ON_BE(x);
 307         m_Contents[i].m_Name = new wxChar[x];
 308         READ_STRING(f, m_Contents[i].m_Name, x);
 309         f -> Read(&x, sizeof(x)); x = wxINT32_SWAP_ON_BE(x);
 310         m_Contents[i].m_Page = new wxChar[x];
 311         READ_STRING(f, m_Contents[i].m_Page, x);
 312         m_Contents[i].m_Book = book;
 313     }
 314
 315     /* load index : */
 316
 317     f -> Read(&x, sizeof(x));
 318     st = m_IndexCnt;
 319     m_IndexCnt += wxINT32_SWAP_ON_BE(x);
 320     m_Index = (wxHtmlContentsItem*) realloc(m_Index, (m_IndexCnt / wxHTML_REALLOC_STEP + 1) *
 321                                                      wxHTML_REALLOC_STEP * sizeof(wxHtmlContentsItem));
 322     for (i = st; i < m_IndexCnt; i++) {
 323         f -> Read(&x, sizeof(x)); x = wxINT32_SWAP_ON_BE(x);
 324         m_Index[i].m_Name = new wxChar[x];
 325         READ_STRING(f, m_Index[i].m_Name, x);
 326         f -> Read(&x, sizeof(x)); x = wxINT32_SWAP_ON_BE(x);
 327         m_Index[i].m_Page = new wxChar[x];
 328         READ_STRING(f, m_Index[i].m_Page, x);
 329         m_Index[i].m_Book = book;
 330     }
 331     return TRUE;
 332 }
 333
 334
 335 bool wxHtmlHelpData::SaveCachedBook(wxHtmlBookRecord *book, wxOutputStream *f)
 336 {
 337     int i;
 338     wxInt32 x;
 339
 340     /* save header - version info : */
 341
 342     x = wxINT32_SWAP_ON_BE(CURRENT_CACHED_BOOK_VERSION);
 343     f -> Write(&x, sizeof(x));
 344
 345     /* save contents : */
 346
 347     x = 0;
 348     for (i = 0; i < m_ContentsCnt; i++) if (m_Contents[i].m_Book == book && m_Contents[i].m_Level > 0) x++;
 349     x = wxINT32_SWAP_ON_BE(x);
 350     f -> Write(&x, sizeof(x));
 351     for (i = 0; i < m_ContentsCnt; i++) {
 352         if (m_Contents[i].m_Book != book || m_Contents[i].m_Level == 0) continue;
 353         x = wxINT32_SWAP_ON_BE(m_Contents[i].m_Level);
 354         f -> Write(&x, sizeof(x));
 355         x = wxINT32_SWAP_ON_BE(m_Contents[i].m_ID);
 356         f -> Write(&x, sizeof(x));
 357         x = wxINT32_SWAP_ON_BE(wxStrlen(m_Contents[i].m_Name) + 1);
 358         f -> Write(&x, sizeof(x));
 359         WRITE_STRING(f, m_Contents[i].m_Name, x);
 360         x = wxINT32_SWAP_ON_BE(wxStrlen(m_Contents[i].m_Page) + 1);
 361         f -> Write(&x, sizeof(x));
 362         WRITE_STRING(f, m_Contents[i].m_Page, x);
 363     }
 364
 365     /* save index : */
 366
 367     x = 0;
 368     for (i = 0; i < m_IndexCnt; i++) if (m_Index[i].m_Book == book && m_Index[i].m_Level > 0) x++;
 369     x = wxINT32_SWAP_ON_BE(x);
 370     f -> Write(&x, sizeof(x));
 371     for (i = 0; i < m_IndexCnt; i++) {
 372         if (m_Index[i].m_Book != book || m_Index[i].m_Level == 0) continue;
 373         x = wxINT32_SWAP_ON_BE(wxStrlen(m_Index[i].m_Name) + 1);
 374         f -> Write(&x, sizeof(x));
 375         WRITE_STRING(f, m_Index[i].m_Name, x);
 376         x = wxINT32_SWAP_ON_BE(wxStrlen(m_Index[i].m_Page) + 1);
 377         f -> Write(&x, sizeof(x));
 378         WRITE_STRING(f, m_Index[i].m_Page, x);
 379     }
 380     return TRUE;
 381 }
 382
 383
 384 void wxHtmlHelpData::SetTempDir(const wxString& path)
 385 {
 386     if (path == wxEmptyString) m_TempPath = path;
 387     else {
 388         if (wxIsAbsolutePath(path)) m_TempPath = path;
 389         else m_TempPath = wxGetCwd() + _T("/") + path;
 390
 391         if (m_TempPath[m_TempPath.Length() - 1] != _T('/'))
 392             m_TempPath << _T('/');
 393     }
 394 }
 395
 396
 397 bool wxHtmlHelpData::AddBookParam(const wxFSFile& bookfile,
 398                                   wxFontEncoding encoding,
 399                                   const wxString& title, const wxString& contfile,
 400                                   const wxString& indexfile, const wxString& deftopic,
 401                                   const wxString& path)
 402 {
 403     wxFileSystem fsys;
 404     wxFSFile *fi;
 405     wxHtmlBookRecord *bookr;
 406
 407     int IndexOld = m_IndexCnt,
 408         ContentsOld = m_ContentsCnt;
 409
 410     if (! path.IsEmpty())
 411         fsys.ChangePathTo(path, TRUE);
 412
 413     bookr = new wxHtmlBookRecord(fsys.GetPath(), title, deftopic);
 414
 415     if (m_ContentsCnt % wxHTML_REALLOC_STEP == 0)
 416         m_Contents = (wxHtmlContentsItem*) realloc(m_Contents, (m_ContentsCnt + wxHTML_REALLOC_STEP) * sizeof(wxHtmlContentsItem));
 417     m_Contents[m_ContentsCnt].m_Level = 0;
 418     m_Contents[m_ContentsCnt].m_ID = 0;
 419     m_Contents[m_ContentsCnt].m_Page = new wxChar[deftopic.Length() + 1];
 420     wxStrcpy(m_Contents[m_ContentsCnt].m_Page, deftopic.c_str());
 421     m_Contents[m_ContentsCnt].m_Name = new wxChar [title.Length() + 1];
 422     wxStrcpy(m_Contents[m_ContentsCnt].m_Name, title.c_str());
 423     m_Contents[m_ContentsCnt].m_Book = bookr;
 424
 425     // store the contents index for later
 426     int cont_start = m_ContentsCnt++;
 427
 428     // Try to find cached binary versions:
 429     // 1. save file as book, but with .hhp.cached extension
 430     // 2. same as 1. but in temp path
 431     // 3. otherwise or if cache load failed, load it from MS.
 432
 433     fi = fsys.OpenFile(bookfile.GetLocation() + wxT(".cached"));
 434
 435     if (fi == NULL ||
 436           fi -> GetModificationTime() < bookfile.GetModificationTime() ||
 437           !LoadCachedBook(bookr, fi -> GetStream()))
 438     {
 439         if (fi != NULL) delete fi;
 440         fi = fsys.OpenFile(m_TempPath + wxFileNameFromPath(bookfile.GetLocation()) + wxT(".cached"));
 441         if (m_TempPath == wxEmptyString || fi == NULL ||
 442             fi -> GetModificationTime() < bookfile.GetModificationTime() ||
 443             !LoadCachedBook(bookr, fi -> GetStream()))
 444         {
 445             LoadMSProject(bookr, fsys, indexfile, contfile);
 446             if (m_TempPath != wxEmptyString)
 447             {
 448                 wxFileOutputStream *outs = new wxFileOutputStream(m_TempPath +
 449                                                   wxFileNameFromPath(bookfile.GetLocation()) + wxT(".cached"));
 450                 SaveCachedBook(bookr, outs);
 451                 delete outs;
 452             }
 453         }
 454     }
 455
 456     if (fi != NULL) delete fi;
 457
 458     // Now store the contents range
 459     bookr->SetContentsRange(cont_start, m_ContentsCnt);
 460
 461     // Convert encoding, if neccessary:
 462     if (encoding != wxFONTENCODING_SYSTEM)
 463     {
 464         wxFontEncodingArray a = wxEncodingConverter::GetPlatformEquivalents(encoding);
 465         if (a.GetCount() != 0 && a[0] != encoding)
 466         {
 467             int i;
 468             wxEncodingConverter conv;
 469             conv.Init(encoding, a[0]);
 470
 471             for (i = IndexOld; i < m_IndexCnt; i++)
 472                 conv.Convert(m_Index[i].m_Name);
 473             for (i = ContentsOld; i < m_ContentsCnt; i++)
 474                 conv.Convert(m_Contents[i].m_Name);
 475         }
 476     }
 477
 478     m_BookRecords.Add(bookr);
 479     if (m_IndexCnt > 0)
 480         qsort(m_Index, m_IndexCnt, sizeof(wxHtmlContentsItem), IndexCompareFunc);
 481
 482     return TRUE;
 483 }
 484
 485
 486 bool wxHtmlHelpData::AddBook(const wxString& book)
 487 {
 488     if (book.Right(4).Lower() == wxT(".zip") ||
 489         book.Right(4).Lower() == wxT(".htb") /*html book*/)
 490
 491     {
 492         wxFileSystem fsys;
 493         wxString s;
 494         bool rt = FALSE;
 495
 496         s = fsys.FindFirst(book + wxT("#zip:") + wxT("*.hhp"), wxFILE);
 497         while (!s.IsEmpty())
 498         {
 499             if (AddBook(s)) rt = TRUE;
 500             s = fsys.FindNext();
 501         }
 502
 503         return rt;
 504     }
 505
 506
 507     else
 508     {
 509         wxFSFile *fi;
 510         wxFileSystem fsys;
 511         wxInputStream *s;
 512         wxString bookFull;
 513
 514         int sz;
 515         char *buff, *lineptr;
 516         char linebuf[300];
 517
 518         wxString title = _("noname"),
 519                  safetitle,
 520                  start = wxEmptyString,
 521                  contents = wxEmptyString,
 522                  index = wxEmptyString,
 523                  charset = wxEmptyString;
 524
 525         if (wxIsAbsolutePath(book)) bookFull = book;
 526         else bookFull = wxGetCwd() + "/" + book;
 527
 528         fi = fsys.OpenFile(bookFull);
 529         if (fi == NULL)
 530         {
 531             wxLogError(_("Cannot open HTML help book: %s"), bookFull.mb_str());
 532             return FALSE;
 533         }
 534         fsys.ChangePathTo(bookFull);
 535         s = fi -> GetStream();
 536         sz = s -> GetSize();
 537         buff = new char[sz + 1];
 538         buff[sz] = 0;
 539         s -> Read(buff, sz);
 540         lineptr = buff;
 541
 542         do {
 543             lineptr = ReadLine(lineptr, linebuf);
 544
 545             if (strstr(linebuf, "Title=") == linebuf)
 546                 title = linebuf + strlen("Title=");
 547             if (strstr(linebuf, "Default topic=") == linebuf)
 548                 start = linebuf + strlen("Default topic=");
 549             if (strstr(linebuf, "Index file=") == linebuf)
 550                 index = linebuf + strlen("Index file=");
 551             if (strstr(linebuf, "Contents file=") == linebuf)
 552                 contents = linebuf + strlen("Contents file=");
 553             if (strstr(linebuf, "Charset=") == linebuf)
 554                 charset = linebuf + strlen("Charset=");
 555         } while (lineptr != NULL);
 556         delete[] buff;
 557
 558         wxFontEncoding enc;
 559         if (charset == wxEmptyString) enc = wxFONTENCODING_SYSTEM;
 560         else enc = wxTheFontMapper -> CharsetToEncoding(charset);
 561         bool rtval = AddBookParam(*fi, enc,
 562                                   title, contents, index, start, fsys.GetPath());
 563         delete fi;
 564         return rtval;
 565     }
 566 }
 567
 568 wxString wxHtmlHelpData::FindPageByName(const wxString& x)
 569 {
 570     int cnt;
 571     int i;
 572     wxFileSystem fsys;
 573     wxFSFile *f;
 574     wxString url(wxEmptyString);
 575
 576     /* 1. try to open given file: */
 577
 578     cnt = m_BookRecords.GetCount();
 579     for (i = 0; i < cnt; i++) {
 580         f = fsys.OpenFile(m_BookRecords[i].GetBasePath() + x);
 581         if (f) {
 582             url = m_BookRecords[i].GetBasePath() + x;
 583             delete f;
 584             return url;
 585         }
 586     }
 587
 588
 589     /* 2. try to find a book: */
 590
 591     for (i = 0; i < cnt; i++) {
 592         if (m_BookRecords[i].GetTitle() == x) {
 593             url = m_BookRecords[i].GetBasePath() + m_BookRecords[i].GetStart();
 594             return url;
 595         }
 596     }
 597
 598     /* 3. try to find in contents: */
 599
 600     cnt = m_ContentsCnt;
 601     for (i = 0; i < cnt; i++) {
 602         if (wxStrcmp(m_Contents[i].m_Name, x) == 0) {
 603             url = m_Contents[i].m_Book -> GetBasePath() + m_Contents[i].m_Page;
 604             return url;
 605         }
 606     }
 607
 608
 609     /* 4. try to find in index: */
 610
 611     cnt = m_IndexCnt;
 612     for (i = 0; i < cnt; i++) {
 613         if (wxStrcmp(m_Index[i].m_Name, x) == 0) {
 614             url = m_Index[i].m_Book -> GetBasePath() + m_Index[i].m_Page;
 615             return url;
 616         }
 617     }
 618
 619     return url;
 620 }
 621
 622 wxString wxHtmlHelpData::FindPageById(int id)
 623 {
 624     int i;
 625     wxString url(wxEmptyString);
 626
 627     for (i = 0; i < m_ContentsCnt; i++) {
 628         if (m_Contents[i].m_ID == id) {
 629             url = m_Contents[i].m_Book -> GetBasePath() + m_Contents[i].m_Page;
 630             return url;
 631         }
 632     }
 633
 634     return url;
 635 }
 636
 637 //----------------------------------------------------------------------------------
 638 // wxHtmlSearchStatus functions
 639 //----------------------------------------------------------------------------------
 640
 641 wxHtmlSearchStatus::wxHtmlSearchStatus(wxHtmlHelpData* data, const wxString& keyword,
 642                                        bool case_sensitive, bool whole_words_only,
 643                                        const wxString& book)
 644 {
 645     m_Data = data;
 646     m_Keyword = keyword;
 647     wxHtmlBookRecord* bookr = NULL;
 648     if (book != wxEmptyString) {
 649         // we have to search in a specific book. Find it first
 650         int i, cnt = data->m_BookRecords.GetCount();
 651         for (i = 0; i < cnt; i++)
 652             if (data->m_BookRecords[i].GetTitle() == book) {
 653                 bookr = &(data->m_BookRecords[i]);
 654                 m_CurIndex = bookr->GetContentsStart();
 655                 m_MaxIndex = bookr->GetContentsEnd();
 656                 break;
 657             }
 658         // check; we won't crash if the book doesn't exist, but it's Bad Anyway.
 659         wxASSERT(bookr);
 660     }
 661     if (! bookr) {
 662         // no book specified; search all books
 663         m_CurIndex = 0;
 664         m_MaxIndex = m_Data->m_ContentsCnt;
 665     }
 666     m_Engine.LookFor(keyword, case_sensitive, whole_words_only);
 667     m_Active = (m_CurIndex < m_MaxIndex);
 668     m_LastPage = NULL;
 669 }
 670
 671 bool wxHtmlSearchStatus::Search()
 672 {
 673     wxFSFile *file;
 674     int i = m_CurIndex;  // shortcut
 675     bool found = FALSE;
 676     wxChar *thepage;
 677
 678     if (!m_Active) {
 679         // sanity check. Illegal use, but we'll try to prevent a crash anyway
 680         wxASSERT(m_Active);
 681         return FALSE;
 682     }
 683
 684     m_Name = wxEmptyString;
 685     m_ContentsItem = NULL;
 686     thepage = m_Data->m_Contents[i].m_Page;
 687
 688     m_Active = (++m_CurIndex < m_MaxIndex);
 689     // check if it is same page with different anchor:
 690     if (m_LastPage != NULL)
 691     {
 692         wxChar *p1, *p2;
 693         for (p1 = thepage, p2 = m_LastPage;
 694              *p1 != 0 && *p1 != _T('#') && *p1 == *p2; p1++, p2++) {}
 695
 696         m_LastPage = thepage;
 697
 698         if (*p1 == 0 || *p1 == _T('#'))
 699             return FALSE;
 700     }
 701     else m_LastPage = thepage;
 702
 703     wxFileSystem fsys;
 704     file = fsys.OpenFile(m_Data->m_Contents[i].m_Book -> GetBasePath() + thepage);
 705     if (file)
 706     {
 707         if (m_Engine.Scan(file -> GetStream())) {
 708             m_Name = m_Data->m_Contents[i].m_Name;
 709             m_ContentsItem = m_Data->m_Contents + i;
 710             found = TRUE;
 711         }
 712         delete file;
 713     }
 714     return found;
 715 }
 716
 717
 718
 719
 720
 721
 722
 723
 724 //--------------------------------------------------------------------------------
 725 // wxSearchEngine
 726 //--------------------------------------------------------------------------------
 727
 728 void wxSearchEngine::LookFor(const wxString& keyword, bool case_sensitive, bool whole_words_only)
 729 {
 730     m_CaseSensitive = case_sensitive;
 731     m_WholeWords = whole_words_only;
 732     if (m_Keyword) delete[] m_Keyword;
 733     m_Keyword = new wxChar[keyword.Length() + 1];
 734     wxStrcpy(m_Keyword, keyword.c_str());
 735
 736     if (!m_CaseSensitive)
 737         for (int i = wxStrlen(m_Keyword) - 1; i >= 0; i--)
 738             if ((m_Keyword[i] >= wxT('A')) && (m_Keyword[i] <= wxT('Z')))
 739                 m_Keyword[i] += wxT('a') - wxT('A');
 740 }
 741
 742
 743
 744 #define WHITESPACE(c)  (c == ' ' || c == '\n' || c == '\r' || c == '\t')
 745
 746 bool wxSearchEngine::Scan(wxInputStream *stream)
 747 {
 748     wxASSERT_MSG(m_Keyword != NULL, wxT("wxSearchEngine::LookFor must be called before scanning!"));
 749
 750     int i, j;
 751     int lng = stream ->GetSize();
 752     int wrd = wxStrlen(m_Keyword);
 753     bool found = FALSE;
 754     char *buf = new char[lng + 1];
 755     stream -> Read(buf, lng);
 756     buf[lng] = 0;
 757
 758     if (!m_CaseSensitive)
 759         for (i = 0; i < lng; i++)
 760             if ((buf[i] >= 'A') && (buf[i] <= 'Z')) buf[i] += 'a' - 'A';
 761
 762     if (m_WholeWords)
 763     {
 764         for (i = 0; i < lng - wrd; i++) {
 765             if (WHITESPACE(buf[i])) continue;
 766             j = 0;
 767             while ((j < wrd) && (buf[i + j] == m_Keyword[j])) j++;
 768             if (j == wrd && WHITESPACE(buf[i + j])) {found = TRUE; break; }
 769         }
 770     }
 771
 772     else
 773     {
 774         for (i = 0; i < lng - wrd; i++) {
 775             j = 0;
 776             while ((j < wrd) && (buf[i + j] == m_Keyword[j])) j++;
 777             if (j == wrd) {found = TRUE; break; }
 778         }
 779     }
 780
 781     delete[] buf;
 782     return found;
 783 }
 784
 785
 786
 787
 788 #endif