Don't reuse the same event object for multiple events in wxGTK.

[wxWidgets.git] / src / html / helpdata.cpp

diff --git a/src/html/helpdata.cpp b/src/html/helpdata.cpp
index 97dd46a709b255060392dada6236f9e4131ab806..f67b1689c8886b8ba4b0dd82b4ce832635de23ff 100644 (file)
--- a/src/html/helpdata.cpp
+++ b/src/html/helpdata.cpp
@@ -1,5 +1,5 @@
 /////////////////////////////////////////////////////////////////////////////
 /////////////////////////////////////////////////////////////////////////////

-// Name:        helpdata.cpp
+// Name:        src/html/helpdata.cpp

 // Purpose:     wxHtmlHelpData
 // Notes:       Based on htmlhelp.cpp, implementing a monolithic
 //              HTML Help controller class,  by Vaclav Slavik
 // Purpose:     wxHtmlHelpData
 // Notes:       Based on htmlhelp.cpp, implementing a monolithic
 //              HTML Help controller class,  by Vaclav Slavik


@@ -9,62 +9,106 @@
 // Licence:     wxWindows licence
 /////////////////////////////////////////////////////////////////////////////
 
 // Licence:     wxWindows licence
 /////////////////////////////////////////////////////////////////////////////
 

-#ifdef __GNUG__
-#pragma implementation
-#endif
-

 // For compilers that support precompilation, includes "wx.h".
 #include "wx/wxprec.h"
 
 #ifdef __BORLANDC__
 // For compilers that support precompilation, includes "wx.h".
 #include "wx/wxprec.h"
 
 #ifdef __BORLANDC__

-#pragma hdrstop
+    #pragma hdrstop

 #endif
 
 #endif
 

-#include "wx/defs.h"
-

 #if wxUSE_HTML && wxUSE_STREAMS
 
 #if wxUSE_HTML && wxUSE_STREAMS
 

-#ifndef WXPRECOMP
+#ifndef WX_PRECOMP

     #include "wx/intl.h"
     #include "wx/log.h"
 #endif
 
     #include "wx/intl.h"
     #include "wx/log.h"
 #endif
 

+#include <ctype.h>
+

 #include "wx/html/helpdata.h"
 #include "wx/tokenzr.h"
 #include "wx/wfstream.h"
 #include "wx/busyinfo.h"
 #include "wx/encconv.h"
 #include "wx/fontmap.h"
 #include "wx/html/helpdata.h"
 #include "wx/tokenzr.h"
 #include "wx/wfstream.h"
 #include "wx/busyinfo.h"
 #include "wx/encconv.h"
 #include "wx/fontmap.h"

-#include "wx/log.h"

 #include "wx/html/htmlpars.h"
 #include "wx/html/htmldefs.h"
 #include "wx/html/htmlpars.h"
 #include "wx/html/htmldefs.h"

+#include "wx/html/htmlfilt.h"
+#include "wx/filename.h"

 
 #include "wx/arrimpl.cpp"
 WX_DEFINE_OBJARRAY(wxHtmlBookRecArray)
 
 #include "wx/arrimpl.cpp"
 WX_DEFINE_OBJARRAY(wxHtmlBookRecArray)

+WX_DEFINE_OBJARRAY(wxHtmlHelpDataItems)

 
 //-----------------------------------------------------------------------------
 // static helper functions
 //-----------------------------------------------------------------------------
 
 // Reads one line, stores it into buf and returns pointer to new line or NULL.
 
 //-----------------------------------------------------------------------------
 // static helper functions
 //-----------------------------------------------------------------------------
 
 // Reads one line, stores it into buf and returns pointer to new line or NULL.

-static char* ReadLine(char *line, char *buf)
+static const wxChar* ReadLine(const wxChar *line, wxChar *buf, size_t bufsize)

 {
 {

-    char *writeptr = buf, *readptr = line;
+    wxChar *writeptr = buf;
+    wxChar *endptr = buf + bufsize - 1;
+    const wxChar *readptr = line;

 
 

-    while (*readptr != 0 && *readptr != '\r' && *readptr != '\n') *(writeptr++) = *(readptr++);
+    while (*readptr != 0 && *readptr != wxT('\r') && *readptr != wxT('\n') &&
+           writeptr != endptr)
+        *(writeptr++) = *(readptr++);

     *writeptr = 0;
     *writeptr = 0;

-    while (*readptr == '\r' || *readptr == '\n') readptr++;
-    if (*readptr == 0) return NULL;
-    else return readptr;
+    while (*readptr == wxT('\r') || *readptr == wxT('\n'))
+        readptr++;
+    if (*readptr == 0)
+        return NULL;
+    else
+        return readptr;

 }
 
 
 
 }
 
 
 

-static int LINKAGEMODE IndexCompareFunc(const void *a, const void *b)
+static int
+wxHtmlHelpIndexCompareFunc(wxHtmlHelpDataItem **a, wxHtmlHelpDataItem **b)

 {
 {

-    return wxStrcmp(((wxHtmlContentsItem*)a)->m_Name, ((wxHtmlContentsItem*)b)->m_Name);
-}
+    wxHtmlHelpDataItem *ia = *a;
+    wxHtmlHelpDataItem *ib = *b;

 
 

+    if (ia == NULL)
+        return -1;
+    if (ib == NULL)
+        return 1;
+
+    if (ia->parent == ib->parent)
+    {
+        return ia->name.CmpNoCase(ib->name);
+    }
+    else if (ia->level == ib->level)
+    {
+        return wxHtmlHelpIndexCompareFunc(&ia->parent, &ib->parent);
+    }
+    else
+    {
+        wxHtmlHelpDataItem *ia2 = ia;
+        wxHtmlHelpDataItem *ib2 = ib;
+
+        while (ia2->level > ib2->level)
+        {
+            ia2 = ia2->parent;
+        }
+        while (ib2->level > ia2->level)
+        {
+            ib2 = ib2->parent;
+        }
+
+        wxASSERT(ia2);
+        wxASSERT(ib2);
+        int res = wxHtmlHelpIndexCompareFunc(&ia2, &ib2);
+        if (res != 0)
+            return res;
+        else if (ia->level > ib->level)
+            return 1;
+        else
+            return -1;
+    }
+}

 
 //-----------------------------------------------------------------------------
 // HP_Parser
 
 //-----------------------------------------------------------------------------
 // HP_Parser


@@ -72,9 +116,18 @@ static int LINKAGEMODE IndexCompareFunc(const void *a, const void *b)
 
 class HP_Parser : public wxHtmlParser
 {
 
 class HP_Parser : public wxHtmlParser
 {

-    public:
-        void AddText(const char* WXUNUSED(text)) { }
-        wxObject* GetProduct() { return NULL; }
+public:
+    HP_Parser()
+    {
+        GetEntitiesParser()->SetEncoding(wxFONTENCODING_ISO8859_1);
+    }
+
+    wxObject* GetProduct() { return NULL; }
+
+protected:
+    virtual void AddText(const wxString& WXUNUSED(txt)) {}
+
+    wxDECLARE_NO_COPY_CLASS(HP_Parser);

 };
 
 
 };
 
 


@@ -85,22 +138,39 @@ class HP_Parser : public wxHtmlParser
 class HP_TagHandler : public wxHtmlTagHandler
 {
     private:
 class HP_TagHandler : public wxHtmlTagHandler
 {
     private:

-        wxString m_Name, m_Page;
-        int m_Level;
-        int m_ID;
-        int m_Index;
-        wxHtmlContentsItem *m_Items;
-        int m_ItemsCnt;
-        wxHtmlBookRecord *m_Book;
+        wxString m_name, m_page;
+        int m_level;
+        int m_id;
+        int m_index;
+        int m_count;
+        wxHtmlHelpDataItem *m_parentItem;
+        wxHtmlBookRecord *m_book;
+
+        wxHtmlHelpDataItems *m_data;

 
     public:
         HP_TagHandler(wxHtmlBookRecord *b) : wxHtmlTagHandler()
 
     public:
         HP_TagHandler(wxHtmlBookRecord *b) : wxHtmlTagHandler()

-            { m_Book = b; m_Items = NULL; m_ItemsCnt = 0; m_Name = m_Page = wxEmptyString;
-              m_Level = 0; m_ID = -1; }
+        {
+            m_data = NULL;
+            m_book = b;
+            m_name = m_page = wxEmptyString;
+            m_level = 0;
+            m_id = wxID_ANY;
+            m_count = 0;
+            m_parentItem = NULL;
+        }

         wxString GetSupportedTags() { return wxT("UL,OBJECT,PARAM"); }
         bool HandleTag(const wxHtmlTag& tag);
         wxString GetSupportedTags() { return wxT("UL,OBJECT,PARAM"); }
         bool HandleTag(const wxHtmlTag& tag);

-        void WriteOut(wxHtmlContentsItem*& array, int& size);
-        void ReadIn(wxHtmlContentsItem* array, int size);
+
+        void Reset(wxHtmlHelpDataItems& data)
+        {
+            m_data = &data;
+            m_count = 0;
+            m_level = 0;
+            m_parentItem = NULL;
+        }
+
+    wxDECLARE_NO_COPY_CLASS(HP_TagHandler);

 };
 
 
 };
 
 


@@ -108,18 +178,21 @@ bool HP_TagHandler::HandleTag(const wxHtmlTag& tag)
 {
     if (tag.GetName() == wxT("UL"))
     {
 {
     if (tag.GetName() == wxT("UL"))
     {

-        m_Level++;
+        wxHtmlHelpDataItem *oldparent = m_parentItem;
+        m_level++;
+        m_parentItem = (m_count > 0) ? &(*m_data)[m_data->size()-1] : NULL;

         ParseInner(tag);
         ParseInner(tag);

-        m_Level--;
-        return TRUE;
+        m_level--;
+        m_parentItem = oldparent;
+        return true;

     }
     else if (tag.GetName() == wxT("OBJECT"))
     {
     }
     else if (tag.GetName() == wxT("OBJECT"))
     {

-        m_Name = m_Page = wxEmptyString;
+        m_name = m_page = wxEmptyString;

         ParseInner(tag);
 
 #if 0
         ParseInner(tag);
 
 #if 0

-         if (!m_Page.IsEmpty())
+         if (!page.IsEmpty())

         /* Valid HHW's file may contain only two object tags:
 
            <OBJECT type="text/site properties">
         /* Valid HHW's file may contain only two object tags:
 
            <OBJECT type="text/site properties">


@@ -133,60 +206,39 @@ bool HP_TagHandler::HandleTag(const wxHtmlTag& tag)
                <param name="Local" value="another.htm">
            </OBJECT>
 
                <param name="Local" value="another.htm">
            </OBJECT>
 

-           We're interested in the latter. !m_Page.IsEmpty() is valid
+           We're interested in the latter. !page.IsEmpty() is valid

            condition because text/site properties does not contain Local param
         */
 #endif
         if (tag.GetParam(wxT("TYPE")) == wxT("text/sitemap"))
         {
            condition because text/site properties does not contain Local param
         */
 #endif
         if (tag.GetParam(wxT("TYPE")) == wxT("text/sitemap"))
         {

-            if (m_ItemsCnt % wxHTML_REALLOC_STEP == 0)
-                m_Items = (wxHtmlContentsItem*) realloc(m_Items,
-                                       (m_ItemsCnt + wxHTML_REALLOC_STEP) *
-                                       sizeof(wxHtmlContentsItem));
-
-            m_Items[m_ItemsCnt].m_Level = m_Level;
-            m_Items[m_ItemsCnt].m_ID = m_ID;
-            m_Items[m_ItemsCnt].m_Page = new wxChar[m_Page.Length() + 1];
-            wxStrcpy(m_Items[m_ItemsCnt].m_Page, m_Page.c_str());
-            m_Items[m_ItemsCnt].m_Name = new wxChar [m_Name.Length() + 1];
-            wxStrcpy(m_Items[m_ItemsCnt].m_Name, m_Name.c_str());
-            m_Items[m_ItemsCnt].m_Book = m_Book;
-            m_ItemsCnt++;
+            wxHtmlHelpDataItem *item = new wxHtmlHelpDataItem();
+            item->parent = m_parentItem;
+            item->level = m_level;
+            item->id = m_id;
+            item->page = m_page;
+            item->name = m_name;
+
+            item->book = m_book;
+            m_data->Add(item);
+            m_count++;

         }
 
         }
 

-        return TRUE;
+        return true;

     }
     else
     { // "PARAM"
     }
     else
     { // "PARAM"

-        if (m_Name == wxEmptyString && tag.GetParam(wxT("NAME")) == wxT("Name"))
-            m_Name = tag.GetParam(wxT("VALUE"));
+        if (m_name.empty() && tag.GetParam(wxT("NAME")) == wxT("Name"))
+            m_name = tag.GetParam(wxT("VALUE"));

         if (tag.GetParam(wxT("NAME")) == wxT("Local"))
         if (tag.GetParam(wxT("NAME")) == wxT("Local"))

-            m_Page = tag.GetParam(wxT("VALUE"));
+            m_page = tag.GetParam(wxT("VALUE"));

         if (tag.GetParam(wxT("NAME")) == wxT("ID"))
         if (tag.GetParam(wxT("NAME")) == wxT("ID"))

-            tag.GetParamAsInt(wxT("VALUE"), &m_ID);
-        return FALSE;
+            tag.GetParamAsInt(wxT("VALUE"), &m_id);
+        return false;

     }
 }
 
 
     }
 }
 
 

-
-void HP_TagHandler::WriteOut(wxHtmlContentsItem*& array, int& size)
-{
-    array = m_Items;
-    size = m_ItemsCnt;
-    m_Items = NULL;
-    m_ItemsCnt = 0;
-}
-
-void HP_TagHandler::ReadIn(wxHtmlContentsItem* array, int size)
-{
-    m_Items = array;
-    m_ItemsCnt = size;
-}
-
-
-
-

 //-----------------------------------------------------------------------------
 // wxHtmlHelpData
 //-----------------------------------------------------------------------------
 //-----------------------------------------------------------------------------
 // wxHtmlHelpData
 //-----------------------------------------------------------------------------


@@ -199,231 +251,235 @@ wxString wxHtmlBookRecord::GetFullPath(const wxString &page) const
         return m_BasePath + page;
 }
 
         return m_BasePath + page;
 }
 

+wxString wxHtmlHelpDataItem::GetIndentedName() const
+{
+    wxString s;
+    for (int i = 1; i < level; i++)
+        s << wxT("   ");
+    s << name;
+    return s;
+}

 
 
 IMPLEMENT_DYNAMIC_CLASS(wxHtmlHelpData, wxObject)
 
 wxHtmlHelpData::wxHtmlHelpData()
 {
 
 
 IMPLEMENT_DYNAMIC_CLASS(wxHtmlHelpData, wxObject)
 
 wxHtmlHelpData::wxHtmlHelpData()
 {

-    m_TempPath = wxEmptyString;
-
-    m_Contents = NULL;
-    m_ContentsCnt = 0;
-    m_Index = NULL;
-    m_IndexCnt = 0;

 }
 
 wxHtmlHelpData::~wxHtmlHelpData()
 {
 }
 
 wxHtmlHelpData::~wxHtmlHelpData()
 {

-    int i;
-
-    m_BookRecords.Empty();
-    if (m_Contents)
-    {
-        for (i = 0; i < m_ContentsCnt; i++)
-        {
-            delete[] m_Contents[i].m_Page;
-            delete[] m_Contents[i].m_Name;
-        }
-        free(m_Contents);
-    }
-    if (m_Index)
-    {
-        for (i = 0; i < m_IndexCnt; i++)
-        {
-            delete[] m_Index[i].m_Page;
-            delete[] m_Index[i].m_Name;
-        }
-        free(m_Index);
-    }

 }
 
 }
 

-bool wxHtmlHelpData::LoadMSProject(wxHtmlBookRecord *book, wxFileSystem& fsys, const wxString& indexfile, const wxString& contentsfile)
+bool wxHtmlHelpData::LoadMSProject(wxHtmlBookRecord *book, wxFileSystem& fsys,
+                                   const wxString& indexfile,
+                                   const wxString& contentsfile)

 {
     wxFSFile *f;
 {
     wxFSFile *f;

-    char *buf;
-    int sz;
+    wxHtmlFilterHTML filter;
+    wxString buf;

     wxString string;
 
     HP_Parser parser;
     HP_TagHandler *handler = new HP_TagHandler(book);
     parser.AddTagHandler(handler);
 
     wxString string;
 
     HP_Parser parser;
     HP_TagHandler *handler = new HP_TagHandler(book);
     parser.AddTagHandler(handler);
 

-    f = ( contentsfile.IsEmpty() ? (wxFSFile*) NULL : fsys.OpenFile(contentsfile) );
+    f = ( contentsfile.empty() ? NULL : fsys.OpenFile(contentsfile) );

     if (f)
     {
     if (f)
     {

-        sz = f->GetStream()->GetSize();
-        buf = new char[sz + 1];
-        buf[sz] = 0;
-        f->GetStream()->Read(buf, sz);
+        buf.clear();
+        buf = filter.ReadFile(*f);

         delete f;
         delete f;

-        handler->ReadIn(m_Contents, m_ContentsCnt);
+        handler->Reset(m_contents);

         parser.Parse(buf);
         parser.Parse(buf);

-        handler->WriteOut(m_Contents, m_ContentsCnt);
-        delete[] buf;

     }
     else
     }
     else

+    {

         wxLogError(_("Cannot open contents file: %s"), contentsfile.c_str());
         wxLogError(_("Cannot open contents file: %s"), contentsfile.c_str());

+    }

 
 

-    f = ( indexfile.IsEmpty() ? (wxFSFile*) NULL : fsys.OpenFile(indexfile) );
+    f = ( indexfile.empty() ? NULL : fsys.OpenFile(indexfile) );

     if (f)
     {
     if (f)
     {

-        sz = f->GetStream()->GetSize();
-        buf = new char[sz + 1];
-        buf[sz] = 0;
-        f->GetStream()->Read(buf, sz);
+        buf.clear();
+        buf = filter.ReadFile(*f);

         delete f;
         delete f;

-        handler->ReadIn(m_Index, m_IndexCnt);
+        handler->Reset(m_index);

         parser.Parse(buf);
         parser.Parse(buf);

-        handler->WriteOut(m_Index, m_IndexCnt);
-        delete[] buf;

     }
     }

-    else if (!indexfile.IsEmpty())
+    else if (!indexfile.empty())
+    {

         wxLogError(_("Cannot open index file: %s"), indexfile.c_str());
         wxLogError(_("Cannot open index file: %s"), indexfile.c_str());

-    return TRUE;
+    }
+    return true;

 }
 
 }
 

+inline static void CacheWriteInt32(wxOutputStream *f, wxInt32 value)
+{
+    wxInt32 x = wxINT32_SWAP_ON_BE(value);
+    f->Write(&x, sizeof(x));
+}

 
 

+inline static wxInt32 CacheReadInt32(wxInputStream *f)
+{
+    wxInt32 x;
+    f->Read(&x, sizeof(x));
+    return wxINT32_SWAP_ON_BE(x);
+}

 
 

+inline static void CacheWriteString(wxOutputStream *f, const wxString& str)
+{
+    const wxWX2MBbuf mbstr = str.mb_str(wxConvUTF8);
+    size_t len = strlen((const char*)mbstr)+1;
+    CacheWriteInt32(f, len);
+    f->Write((const char*)mbstr, len);
+}

 
 

-#if wxUSE_UNICODE
-
-#define READ_STRING(f, s, lng) { char tmpc; for (int i = 0; i < lng; i++) { f->Read(&tmpc, 1); s[i] = (wxChar)tmpc;} }
-#define WRITE_STRING(f, s, lng) { char tmpc; for (int i = 0; i < lng; i++) { tmpc = (char)s[i]; f->Write(&tmpc, 1);} }
-
-#else
-
-#define READ_STRING(f, s, lng) f->Read(s, lng * sizeof(char));
-#define WRITE_STRING(f, s, lng) f->Write(s, lng * sizeof(char));
+inline static wxString CacheReadString(wxInputStream *f)
+{
+    size_t len = (size_t)CacheReadInt32(f);
+    wxCharBuffer str(len-1);
+    f->Read(str.data(), len);
+    return wxString(str, wxConvUTF8);
+}

 
 

-#endif
+#define CURRENT_CACHED_BOOK_VERSION     5

 
 

+// Additional flags to detect incompatibilities of the runtime environment:
+#define CACHED_BOOK_FORMAT_FLAGS \
+                     (wxUSE_UNICODE << 0)

 
 

-#define CURRENT_CACHED_BOOK_VERSION     1

 
 bool wxHtmlHelpData::LoadCachedBook(wxHtmlBookRecord *book, wxInputStream *f)
 {
 
 bool wxHtmlHelpData::LoadCachedBook(wxHtmlBookRecord *book, wxInputStream *f)
 {

-    int i, st;
-    wxInt32 x;
+    int i, st, newsize;

     wxInt32 version;
 
     /* load header - version info : */
     wxInt32 version;
 
     /* load header - version info : */

-
-    f->Read(&x, sizeof(x));
-    version = wxINT32_SWAP_ON_BE(x);
+    version = CacheReadInt32(f);

 
     if (version != CURRENT_CACHED_BOOK_VERSION)
     {
 
     if (version != CURRENT_CACHED_BOOK_VERSION)
     {

-        wxLogError(_("Incorrect version of HTML help book"));
-        return FALSE;
-        // NOTE: when adding new version, please ensure backward compatibility!
+        // NB: We can just silently return false here and don't worry about
+        //     it anymore, because AddBookParam will load the MS project in
+        //     absence of (properly versioned) .cached file and automatically
+        //     create new .cached file immediately afterward.
+        return false;

     }
 
     }
 

-    /* load contents : */
+    if (CacheReadInt32(f) != CACHED_BOOK_FORMAT_FLAGS)
+        return false;

 
 

-    f->Read(&x, sizeof(x));
-    st = m_ContentsCnt;
-    m_ContentsCnt += wxINT32_SWAP_ON_BE(x);
-    m_Contents = (wxHtmlContentsItem*) realloc(m_Contents,
-                                               (m_ContentsCnt / wxHTML_REALLOC_STEP + 1) *
-                                               wxHTML_REALLOC_STEP * sizeof(wxHtmlContentsItem));
-    for (i = st; i < m_ContentsCnt; i++)
-    {
-        f->Read(&x, sizeof(x));
-        m_Contents[i].m_Level = wxINT32_SWAP_ON_BE(x);
-        f->Read(&x, sizeof(x));
-        m_Contents[i].m_ID = wxINT32_SWAP_ON_BE(x);
-        f->Read(&x, sizeof(x)); x = wxINT32_SWAP_ON_BE(x);
-        m_Contents[i].m_Name = new wxChar[x];
-        READ_STRING(f, m_Contents[i].m_Name, x);
-        f->Read(&x, sizeof(x)); x = wxINT32_SWAP_ON_BE(x);
-        m_Contents[i].m_Page = new wxChar[x];
-        READ_STRING(f, m_Contents[i].m_Page, x);
-        m_Contents[i].m_Book = book;
+    /* load contents : */
+    st = m_contents.size();
+    newsize = st + CacheReadInt32(f);
+    m_contents.Alloc(newsize);
+    for (i = st; i < newsize; i++)
+    {
+        wxHtmlHelpDataItem *item = new wxHtmlHelpDataItem;
+        item->level = CacheReadInt32(f);
+        item->id = CacheReadInt32(f);
+        item->name = CacheReadString(f);
+        item->page = CacheReadString(f);
+        item->book = book;
+        m_contents.Add(item);

     }
 
     /* load index : */
     }
 
     /* load index : */

-
-    f->Read(&x, sizeof(x));
-    st = m_IndexCnt;
-    m_IndexCnt += wxINT32_SWAP_ON_BE(x);
-    m_Index = (wxHtmlContentsItem*) realloc(m_Index, (m_IndexCnt / wxHTML_REALLOC_STEP + 1) *
-                                                     wxHTML_REALLOC_STEP * sizeof(wxHtmlContentsItem));
-    for (i = st; i < m_IndexCnt; i++)
-    {
-        f->Read(&x, sizeof(x)); x = wxINT32_SWAP_ON_BE(x);
-        m_Index[i].m_Name = new wxChar[x];
-        READ_STRING(f, m_Index[i].m_Name, x);
-        f->Read(&x, sizeof(x)); x = wxINT32_SWAP_ON_BE(x);
-        m_Index[i].m_Page = new wxChar[x];
-        READ_STRING(f, m_Index[i].m_Page, x);
-        m_Index[i].m_Book = book;
-    }
-    return TRUE;
+    st = m_index.size();
+    newsize = st + CacheReadInt32(f);
+    m_index.Alloc(newsize);
+    for (i = st; i < newsize; i++)
+    {
+        wxHtmlHelpDataItem *item = new wxHtmlHelpDataItem;
+        item->name = CacheReadString(f);
+        item->page = CacheReadString(f);
+        item->level = CacheReadInt32(f);
+        item->book = book;
+        int parentShift = CacheReadInt32(f);
+        if (parentShift != 0)
+            item->parent = &m_index[m_index.size() - parentShift];
+        m_index.Add(item);
+    }
+    return true;

 }
 
 
 bool wxHtmlHelpData::SaveCachedBook(wxHtmlBookRecord *book, wxOutputStream *f)
 {
     int i;
 }
 
 
 bool wxHtmlHelpData::SaveCachedBook(wxHtmlBookRecord *book, wxOutputStream *f)
 {
     int i;

-    wxInt32 x;
+    wxInt32 cnt;

 
     /* save header - version info : */
 
     /* save header - version info : */

-
-    x = wxINT32_SWAP_ON_BE(CURRENT_CACHED_BOOK_VERSION);
-    f->Write(&x, sizeof(x));
+    CacheWriteInt32(f, CURRENT_CACHED_BOOK_VERSION);
+    CacheWriteInt32(f, CACHED_BOOK_FORMAT_FLAGS);

 
     /* save contents : */
 
     /* save contents : */

+    int len = m_contents.size();
+    for (cnt = 0, i = 0; i < len; i++)
+        if (m_contents[i].book == book && m_contents[i].level > 0)
+            cnt++;
+    CacheWriteInt32(f, cnt);

 
 

-    x = 0;
-    for (i = 0; i < m_ContentsCnt; i++) if (m_Contents[i].m_Book == book && m_Contents[i].m_Level > 0) x++;
-    x = wxINT32_SWAP_ON_BE(x);
-    f->Write(&x, sizeof(x));
-    for (i = 0; i < m_ContentsCnt; i++)
+    for (i = 0; i < len; i++)

     {
     {

-        if (m_Contents[i].m_Book != book || m_Contents[i].m_Level == 0) continue;
-        x = wxINT32_SWAP_ON_BE(m_Contents[i].m_Level);
-        f->Write(&x, sizeof(x));
-        x = wxINT32_SWAP_ON_BE(m_Contents[i].m_ID);
-        f->Write(&x, sizeof(x));
-        x = wxINT32_SWAP_ON_BE(wxStrlen(m_Contents[i].m_Name) + 1);
-        f->Write(&x, sizeof(x));
-        WRITE_STRING(f, m_Contents[i].m_Name, x);
-        x = wxINT32_SWAP_ON_BE(wxStrlen(m_Contents[i].m_Page) + 1);
-        f->Write(&x, sizeof(x));
-        WRITE_STRING(f, m_Contents[i].m_Page, x);
+        if (m_contents[i].book != book || m_contents[i].level == 0)
+            continue;
+        CacheWriteInt32(f, m_contents[i].level);
+        CacheWriteInt32(f, m_contents[i].id);
+        CacheWriteString(f, m_contents[i].name);
+        CacheWriteString(f, m_contents[i].page);

     }
 
     /* save index : */
     }
 
     /* save index : */

+    len = m_index.size();
+    for (cnt = 0, i = 0; i < len; i++)
+        if (m_index[i].book == book && m_index[i].level > 0)
+            cnt++;
+    CacheWriteInt32(f, cnt);

 
 

-    x = 0;
-    for (i = 0; i < m_IndexCnt; i++) if (m_Index[i].m_Book == book && m_Index[i].m_Level > 0) x++;
-    x = wxINT32_SWAP_ON_BE(x);
-    f->Write(&x, sizeof(x));
-    for (i = 0; i < m_IndexCnt; i++)
+    for (i = 0; i < len; i++)

     {
     {

-        if (m_Index[i].m_Book != book || m_Index[i].m_Level == 0) continue;
-        x = wxINT32_SWAP_ON_BE(wxStrlen(m_Index[i].m_Name) + 1);
-        f->Write(&x, sizeof(x));
-        WRITE_STRING(f, m_Index[i].m_Name, x);
-        x = wxINT32_SWAP_ON_BE(wxStrlen(m_Index[i].m_Page) + 1);
-        f->Write(&x, sizeof(x));
-        WRITE_STRING(f, m_Index[i].m_Page, x);
+        if (m_index[i].book != book || m_index[i].level == 0)
+            continue;
+        CacheWriteString(f, m_index[i].name);
+        CacheWriteString(f, m_index[i].page);
+        CacheWriteInt32(f, m_index[i].level);
+        // save distance to parent item, if any:
+        if (m_index[i].parent == NULL)
+        {
+            CacheWriteInt32(f, 0);
+        }
+        else
+        {
+            int cnt2 = 0;
+            wxHtmlHelpDataItem *parent = m_index[i].parent;
+            for (int j = i-1; j >= 0; j--)
+            {
+                if (m_index[j].book == book && m_index[j].level > 0)
+                    cnt2++;
+                if (&m_index[j] == parent)
+                    break;
+            }
+            wxASSERT(cnt2 > 0);
+            CacheWriteInt32(f, cnt2);
+        }

     }
     }

-    return TRUE;
+    return true;

 }
 
 
 void wxHtmlHelpData::SetTempDir(const wxString& path)
 {
 }
 
 
 void wxHtmlHelpData::SetTempDir(const wxString& path)
 {

-    if (path == wxEmptyString) m_TempPath = path;
+    if (path.empty())
+        m_tempPath = path;

     else
     {
     else
     {

-        if (wxIsAbsolutePath(path)) m_TempPath = path;
-        else m_TempPath = wxGetCwd() + _T("/") + path;
+        if (wxIsAbsolutePath(path)) m_tempPath = path;
+        else m_tempPath = wxGetCwd() + wxT("/") + path;

 
 

-        if (m_TempPath[m_TempPath.Length() - 1] != _T('/'))
-            m_TempPath << _T('/');
+        if (m_tempPath[m_tempPath.length() - 1] != wxT('/'))
+            m_tempPath << wxT('/');

     }
 }
 
     }
 }
 


@@ -449,26 +505,32 @@ bool wxHtmlHelpData::AddBookParam(const wxFSFile& bookfile,
     wxFSFile *fi;
     wxHtmlBookRecord *bookr;
 
     wxFSFile *fi;
     wxHtmlBookRecord *bookr;
 

-    int IndexOld = m_IndexCnt,
-        ContentsOld = m_ContentsCnt;
+    int IndexOld = m_index.size(),
+        ContentsOld = m_contents.size();
+
+    if (!path.empty())
+        fsys.ChangePathTo(path, true);

 
 

-    if (! path.IsEmpty())
-        fsys.ChangePathTo(path, TRUE);
+    size_t booksCnt = m_bookRecords.GetCount();
+    for (size_t i = 0; i < booksCnt; i++)
+    {
+        if ( m_bookRecords[i].GetBookFile() == bookfile.GetLocation() )
+            return true; // book is (was) loaded
+    }

 
 

-    bookr = new wxHtmlBookRecord(fsys.GetPath(), title, deftopic);
+    bookr = new wxHtmlBookRecord(bookfile.GetLocation(), fsys.GetPath(), title, deftopic);

 
 

-    if (m_ContentsCnt % wxHTML_REALLOC_STEP == 0)
-        m_Contents = (wxHtmlContentsItem*) realloc(m_Contents, (m_ContentsCnt + wxHTML_REALLOC_STEP) * sizeof(wxHtmlContentsItem));
-    m_Contents[m_ContentsCnt].m_Level = 0;
-    m_Contents[m_ContentsCnt].m_ID = 0;
-    m_Contents[m_ContentsCnt].m_Page = new wxChar[deftopic.Length() + 1];
-    wxStrcpy(m_Contents[m_ContentsCnt].m_Page, deftopic.c_str());
-    m_Contents[m_ContentsCnt].m_Name = new wxChar [title.Length() + 1];
-    wxStrcpy(m_Contents[m_ContentsCnt].m_Name, title.c_str());
-    m_Contents[m_ContentsCnt].m_Book = bookr;
+    wxHtmlHelpDataItem *bookitem = new wxHtmlHelpDataItem;
+    bookitem->level = 0;
+    bookitem->id = 0;
+    bookitem->page = deftopic;
+    bookitem->name = title;
+    bookitem->book = bookr;

 
     // store the contents index for later
 
     // store the contents index for later

-    int cont_start = m_ContentsCnt++;
+    int cont_start = m_contents.size();
+
+    m_contents.Add(bookitem);

 
     // Try to find cached binary versions:
     // 1. save file as book, but with .hhp.cached extension
 
     // Try to find cached binary versions:
     // 1. save file as book, but with .hhp.cached extension


@@ -478,19 +540,23 @@ bool wxHtmlHelpData::AddBookParam(const wxFSFile& bookfile,
     fi = fsys.OpenFile(bookfile.GetLocation() + wxT(".cached"));
 
     if (fi == NULL ||
     fi = fsys.OpenFile(bookfile.GetLocation() + wxT(".cached"));
 
     if (fi == NULL ||

+#if wxUSE_DATETIME

           fi->GetModificationTime() < bookfile.GetModificationTime() ||
           fi->GetModificationTime() < bookfile.GetModificationTime() ||

+#endif // wxUSE_DATETIME

           !LoadCachedBook(bookr, fi->GetStream()))
     {
         if (fi != NULL) delete fi;
           !LoadCachedBook(bookr, fi->GetStream()))
     {
         if (fi != NULL) delete fi;

-        fi = fsys.OpenFile(m_TempPath + wxFileNameFromPath(bookfile.GetLocation()) + wxT(".cached"));
-        if (m_TempPath == wxEmptyString || fi == NULL ||
+        fi = fsys.OpenFile(m_tempPath + wxFileNameFromPath(bookfile.GetLocation()) + wxT(".cached"));
+        if (m_tempPath.empty() || fi == NULL ||
+#if wxUSE_DATETIME

             fi->GetModificationTime() < bookfile.GetModificationTime() ||
             fi->GetModificationTime() < bookfile.GetModificationTime() ||

+#endif // wxUSE_DATETIME

             !LoadCachedBook(bookr, fi->GetStream()))
         {
             LoadMSProject(bookr, fsys, indexfile, contfile);
             !LoadCachedBook(bookr, fi->GetStream()))
         {
             LoadMSProject(bookr, fsys, indexfile, contfile);

-            if (m_TempPath != wxEmptyString)
+            if (!m_tempPath.empty())

             {
             {

-                wxFileOutputStream *outs = new wxFileOutputStream(m_TempPath +
+                wxFileOutputStream *outs = new wxFileOutputStream(m_tempPath +

                                                   SafeFileName(wxFileNameFromPath(bookfile.GetLocation())) + wxT(".cached"));
                 SaveCachedBook(bookr, outs);
                 delete outs;
                                                   SafeFileName(wxFileNameFromPath(bookfile.GetLocation())) + wxT(".cached"));
                 SaveCachedBook(bookr, outs);
                 delete outs;


@@ -501,194 +567,217 @@ bool wxHtmlHelpData::AddBookParam(const wxFSFile& bookfile,
     if (fi != NULL) delete fi;
 
     // Now store the contents range
     if (fi != NULL) delete fi;
 
     // Now store the contents range

-    bookr->SetContentsRange(cont_start, m_ContentsCnt);
+    bookr->SetContentsRange(cont_start, m_contents.size());

 
 

-    // Convert encoding, if neccessary:
+    // MS HTML Help files [written by MS HTML Help Workshop] are broken
+    // in that the data are iso-8859-1 (including HTML entities), but must
+    // be interpreted as being in language's windows charset. Correct the
+    // differences here and also convert to wxConvLocal in ANSI build

     if (encoding != wxFONTENCODING_SYSTEM)
     {
     if (encoding != wxFONTENCODING_SYSTEM)
     {

-        wxFontEncodingArray a = wxEncodingConverter::GetPlatformEquivalents(encoding);
-        if (a.GetCount() != 0 && a[0] != encoding)
+        #if wxUSE_UNICODE
+            #define CORRECT_STR(str, conv) \
+                str = wxString((str).mb_str(wxConvISO8859_1), conv)
+        #else
+            #define CORRECT_STR(str, conv) \
+                str = wxString((str).wc_str(conv), wxConvLocal)
+        #endif
+        wxCSConv conv(encoding);
+        size_t IndexCnt = m_index.size();
+        size_t ContentsCnt = m_contents.size();
+        size_t i;
+        for (i = IndexOld; i < IndexCnt; i++)

         {
         {

-            int i;
-            wxEncodingConverter conv;
-            conv.Init(encoding, a[0]);
-
-            for (i = IndexOld; i < m_IndexCnt; i++)
-                conv.Convert(m_Index[i].m_Name);
-            for (i = ContentsOld; i < m_ContentsCnt; i++)
-                conv.Convert(m_Contents[i].m_Name);
+            CORRECT_STR(m_index[i].name, conv);

         }
         }

+        for (i = ContentsOld; i < ContentsCnt; i++)
+        {
+            CORRECT_STR(m_contents[i].name, conv);
+        }
+        #undef CORRECT_STR

     }
 
     }
 

-    m_BookRecords.Add(bookr);
-    if (m_IndexCnt > 0)
-        qsort(m_Index, m_IndexCnt, sizeof(wxHtmlContentsItem), IndexCompareFunc);
+    m_bookRecords.Add(bookr);
+    if (!m_index.empty())
+    {
+        m_index.Sort(wxHtmlHelpIndexCompareFunc);
+    }

 
 

-    return TRUE;
+    return true;

 }
 
 
 bool wxHtmlHelpData::AddBook(const wxString& book)
 {
 }
 
 
 bool wxHtmlHelpData::AddBook(const wxString& book)
 {

-    if (book.Right(4).Lower() == wxT(".zip") ||
-        book.Right(4).Lower() == wxT(".htb") /*html book*/)
-
+    wxString extension(book.Right(4).Lower());
+    if (extension == wxT(".zip") ||
+#if wxUSE_LIBMSPACK
+        extension == wxT(".chm") /*compressed html help book*/ ||
+#endif
+        extension == wxT(".htb") /*html book*/)

     {
         wxFileSystem fsys;
         wxString s;
     {
         wxFileSystem fsys;
         wxString s;

-        bool rt = FALSE;
+        bool rt = false;

 
 

-        s = fsys.FindFirst(book + wxT("#zip:") + wxT("*.hhp"), wxFILE);
-        while (!s.IsEmpty())
+#if wxUSE_LIBMSPACK
+        if (extension == wxT(".chm"))
+            s = fsys.FindFirst(book + wxT("#chm:*.hhp"), wxFILE);
+        else
+#endif
+            s = fsys.FindFirst(book + wxT("#zip:*.hhp"), wxFILE);
+
+        while (!s.empty())

         {
         {

-            if (AddBook(s)) rt = TRUE;
+            if (AddBook(s)) rt = true;

             s = fsys.FindNext();
         }
 
         return rt;
     }
 
             s = fsys.FindNext();
         }
 
         return rt;
     }
 

+    wxFSFile *fi;
+    wxFileSystem fsys;

 
 

-    else
+    wxString title = _("noname"),
+             safetitle,
+             start = wxEmptyString,
+             contents = wxEmptyString,
+             index = wxEmptyString,
+             charset = wxEmptyString;
+
+    fi = fsys.OpenFile(book);
+    if (fi == NULL)

     {
     {

-        wxFSFile *fi;
-        wxFileSystem fsys;
-        wxInputStream *s;
-        wxString bookFull;
+        wxLogError(_("Cannot open HTML help book: %s"), book.c_str());
+        return false;
+    }
+    fsys.ChangePathTo(book);

 
 

-        int sz;
-        char *buff, *lineptr;
-        char linebuf[300];
+    const wxChar *lineptr;
+    wxChar linebuf[300];
+    wxString tmp;
+    wxHtmlFilterPlainText filter;
+    tmp = filter.ReadFile(*fi);
+    lineptr = tmp.c_str();

 
 

-        wxString title = _("noname"),
-                 safetitle,
-                 start = wxEmptyString,
-                 contents = wxEmptyString,
-                 index = wxEmptyString,
-                 charset = wxEmptyString;
+    do
+    {
+        lineptr = ReadLine(lineptr, linebuf, 300);
+
+        for (wxChar *ch = linebuf; *ch != wxT('\0') && *ch != wxT('='); ch++)
+           *ch = (wxChar)wxTolower(*ch);
+
+        if (wxStrstr(linebuf, wxT("title=")) == linebuf)
+            title = linebuf + wxStrlen(wxT("title="));
+        if (wxStrstr(linebuf, wxT("default topic=")) == linebuf)
+            start = linebuf + wxStrlen(wxT("default topic="));
+        if (wxStrstr(linebuf, wxT("index file=")) == linebuf)
+            index = linebuf + wxStrlen(wxT("index file="));
+        if (wxStrstr(linebuf, wxT("contents file=")) == linebuf)
+            contents = linebuf + wxStrlen(wxT("contents file="));
+        if (wxStrstr(linebuf, wxT("charset=")) == linebuf)
+            charset = linebuf + wxStrlen(wxT("charset="));
+    } while (lineptr != NULL);
+
+    wxFontEncoding enc = wxFONTENCODING_SYSTEM;
+#if wxUSE_FONTMAP
+    if (charset != wxEmptyString)
+        enc = wxFontMapper::Get()->CharsetToEncoding(charset);
+#endif

 
 

-        if (wxIsAbsolutePath(book)) bookFull = book;
-        else bookFull = wxGetCwd() + "/" + book;
+    bool rtval = AddBookParam(*fi, enc,
+                              title, contents, index, start, fsys.GetPath());
+    delete fi;

 
 

-        fi = fsys.OpenFile(bookFull);
-        if (fi == NULL)
-        {
-            wxLogError(_("Cannot open HTML help book: %s"), bookFull.c_str());
-            return FALSE;
-        }
-        fsys.ChangePathTo(bookFull);
-        s = fi->GetStream();
-        sz = s->GetSize();
-        buff = new char[sz + 1];
-        buff[sz] = 0;
-        s->Read(buff, sz);
-        lineptr = buff;
-
-        do {
-            lineptr = ReadLine(lineptr, linebuf);
-
-            if (strstr(linebuf, "Title=") == linebuf)
-                title = linebuf + strlen("Title=");
-            if (strstr(linebuf, "Default topic=") == linebuf)
-                start = linebuf + strlen("Default topic=");
-            if (strstr(linebuf, "Index file=") == linebuf)
-                index = linebuf + strlen("Index file=");
-            if (strstr(linebuf, "Contents file=") == linebuf)
-                contents = linebuf + strlen("Contents file=");
-            if (strstr(linebuf, "Charset=") == linebuf)
-                charset = linebuf + strlen("Charset=");
-        } while (lineptr != NULL);
-        delete[] buff;
-
-        wxFontEncoding enc;
-        if (charset == wxEmptyString) enc = wxFONTENCODING_SYSTEM;
-        else enc = wxTheFontMapper->CharsetToEncoding(charset);
-        bool rtval = AddBookParam(*fi, enc,
-                                  title, contents, index, start, fsys.GetPath());
-        delete fi;
-        return rtval;
-    }
+    return rtval;

 }
 
 wxString wxHtmlHelpData::FindPageByName(const wxString& x)
 {
 }
 
 wxString wxHtmlHelpData::FindPageByName(const wxString& x)
 {

-    int cnt;

     int i;
     int i;

-    wxFileSystem fsys;
-    wxFSFile *f;
-    wxString url(wxEmptyString);

 
 

-    /* 1. try to open given file: */
+    bool has_non_ascii = false;
+    wxString::const_iterator it;
+    for (it = x.begin(); it != x.end(); ++it)
+    {
+        wxUniChar ch = *it;
+        if (!ch.IsAscii())
+        {
+            has_non_ascii = true;
+            break;
+        }
+    }
+
+    int cnt = m_bookRecords.GetCount();

 
 

-    cnt = m_BookRecords.GetCount();
-    for (i = 0; i < cnt; i++)
+    if (!has_non_ascii)

     {
     {

-        f = fsys.OpenFile(m_BookRecords[i].GetFullPath(x));
+      wxFileSystem fsys;
+      wxFSFile *f;
+      // 1. try to open given file:
+      for (i = 0; i < cnt; i++)
+      {
+        f = fsys.OpenFile(m_bookRecords[i].GetFullPath(x));

         if (f)
         {
         if (f)
         {

-            url = m_BookRecords[i].GetFullPath(x);
+            wxString url = m_bookRecords[i].GetFullPath(x);

             delete f;
             return url;
         }
             delete f;
             return url;
         }

+      }

     }
 
 
     }
 
 

-    /* 2. try to find a book: */
-
+    // 2. try to find a book:

     for (i = 0; i < cnt; i++)
     {
     for (i = 0; i < cnt; i++)
     {

-        if (m_BookRecords[i].GetTitle() == x)
-        {
-            url = m_BookRecords[i].GetFullPath(m_BookRecords[i].GetStart());
-            return url;
-        }
+        if (m_bookRecords[i].GetTitle() == x)
+            return m_bookRecords[i].GetFullPath(m_bookRecords[i].GetStart());

     }
 
     }
 

-    /* 3. try to find in contents: */
-
-    cnt = m_ContentsCnt;
+    // 3. try to find in contents:
+    cnt = m_contents.size();

     for (i = 0; i < cnt; i++)
     {
     for (i = 0; i < cnt; i++)
     {

-        if (wxStrcmp(m_Contents[i].m_Name, x) == 0)
-        {
-            url = m_Contents[i].GetFullPath();
-            return url;
-        }
+        if (m_contents[i].name == x)
+            return m_contents[i].GetFullPath();

     }
 
 
     }
 
 

-    /* 4. try to find in index: */
+    // 4. try to find in index:
+    cnt = m_index.size();
+    for (i = 0; i < cnt; i++)
+    {
+        if (m_index[i].name == x)
+            return m_index[i].GetFullPath();
+    }

 
 

-    cnt = m_IndexCnt;
+    // 4b. if still not found, try case-insensitive comparison

     for (i = 0; i < cnt; i++)
     {
     for (i = 0; i < cnt; i++)
     {

-        if (wxStrcmp(m_Index[i].m_Name, x) == 0)
-        {
-            url = m_Index[i].GetFullPath();
-            return url;
-        }
+        if (m_index[i].name.CmpNoCase(x) == 0)
+            return m_index[i].GetFullPath();

     }
 
     }
 

-    return url;
+    return wxEmptyString;

 }
 
 wxString wxHtmlHelpData::FindPageById(int id)
 {
 }
 
 wxString wxHtmlHelpData::FindPageById(int id)
 {

-    int i;
-    wxString url(wxEmptyString);
-
-    for (i = 0; i < m_ContentsCnt; i++)
+    size_t cnt = m_contents.size();
+    for (size_t i = 0; i < cnt; i++)

     {
     {

-        if (m_Contents[i].m_ID == id)
+        if (m_contents[i].id == id)

         {
         {

-            url = m_Contents[i].GetFullPath();
-            return url;
+            return m_contents[i].GetFullPath();

         }
     }
 
         }
     }
 

-    return url;
+    return wxEmptyString;

 }
 
 }
 

+

 //----------------------------------------------------------------------------------
 // wxHtmlSearchStatus functions
 //----------------------------------------------------------------------------------
 //----------------------------------------------------------------------------------
 // wxHtmlSearchStatus functions
 //----------------------------------------------------------------------------------


@@ -703,11 +792,11 @@ wxHtmlSearchStatus::wxHtmlSearchStatus(wxHtmlHelpData* data, const wxString& key
     if (book != wxEmptyString)
     {
         // we have to search in a specific book. Find it first
     if (book != wxEmptyString)
     {
         // we have to search in a specific book. Find it first

-        int i, cnt = data->m_BookRecords.GetCount();
+        int i, cnt = data->m_bookRecords.GetCount();

         for (i = 0; i < cnt; i++)
         for (i = 0; i < cnt; i++)

-            if (data->m_BookRecords[i].GetTitle() == book)
+            if (data->m_bookRecords[i].GetTitle() == book)

             {
             {

-                bookr = &(data->m_BookRecords[i]);
+                bookr = &(data->m_bookRecords[i]);

                 m_CurIndex = bookr->GetContentsStart();
                 m_MaxIndex = bookr->GetContentsEnd();
                 break;
                 m_CurIndex = bookr->GetContentsStart();
                 m_MaxIndex = bookr->GetContentsEnd();
                 break;


@@ -719,55 +808,54 @@ wxHtmlSearchStatus::wxHtmlSearchStatus(wxHtmlHelpData* data, const wxString& key
     {
         // no book specified; search all books
         m_CurIndex = 0;
     {
         // no book specified; search all books
         m_CurIndex = 0;

-        m_MaxIndex = m_Data->m_ContentsCnt;
+        m_MaxIndex = m_Data->m_contents.size();

     }
     m_Engine.LookFor(keyword, case_sensitive, whole_words_only);
     m_Active = (m_CurIndex < m_MaxIndex);
     }
     m_Engine.LookFor(keyword, case_sensitive, whole_words_only);
     m_Active = (m_CurIndex < m_MaxIndex);

-    m_LastPage = NULL;

 }
 
 bool wxHtmlSearchStatus::Search()
 {
     wxFSFile *file;
     int i = m_CurIndex;  // shortcut
 }
 
 bool wxHtmlSearchStatus::Search()
 {
     wxFSFile *file;
     int i = m_CurIndex;  // shortcut

-    bool found = FALSE;
-    wxChar *thepage;
+    bool found = false;
+    wxString thepage;

 
     if (!m_Active)
     {
         // sanity check. Illegal use, but we'll try to prevent a crash anyway
         wxASSERT(m_Active);
 
     if (!m_Active)
     {
         // sanity check. Illegal use, but we'll try to prevent a crash anyway
         wxASSERT(m_Active);

-        return FALSE;
+        return false;

     }
 
     m_Name = wxEmptyString;
     }
 
     m_Name = wxEmptyString;

-    m_ContentsItem = NULL;
-    thepage = m_Data->m_Contents[i].m_Page;
+    m_CurItem = NULL;
+    thepage = m_Data->m_contents[i].page;

 
     m_Active = (++m_CurIndex < m_MaxIndex);
     // check if it is same page with different anchor:
 
     m_Active = (++m_CurIndex < m_MaxIndex);
     // check if it is same page with different anchor:

-    if (m_LastPage != NULL)
+    if (!m_LastPage.empty())

     {
     {

-        wxChar *p1, *p2;
-        for (p1 = thepage, p2 = m_LastPage;
-             *p1 != 0 && *p1 != _T('#') && *p1 == *p2; p1++, p2++) {}
+        const wxChar *p1, *p2;
+        for (p1 = thepage.c_str(), p2 = m_LastPage.c_str();
+             *p1 != 0 && *p1 != wxT('#') && *p1 == *p2; p1++, p2++) {}

 
         m_LastPage = thepage;
 
 
         m_LastPage = thepage;
 

-        if (*p1 == 0 || *p1 == _T('#'))
-            return FALSE;
+        if (*p1 == 0 || *p1 == wxT('#'))
+            return false;

     }
     else m_LastPage = thepage;
 
     wxFileSystem fsys;
     }
     else m_LastPage = thepage;
 
     wxFileSystem fsys;

-    file = fsys.OpenFile(m_Data->m_Contents[i].m_Book->GetFullPath(thepage));
+    file = fsys.OpenFile(m_Data->m_contents[i].book->GetFullPath(thepage));

     if (file)
     {
     if (file)
     {

-        if (m_Engine.Scan(file->GetStream()))
+        if (m_Engine.Scan(*file))

         {
         {

-            m_Name = m_Data->m_Contents[i].m_Name;
-            m_ContentsItem = m_Data->m_Contents + i;
-            found = TRUE;
+            m_Name = m_Data->m_contents[i].name;
+            m_CurItem = &m_Data->m_contents[i];
+            found = true;

         }
         delete file;
     }
         }
         delete file;
     }


@@ -782,72 +870,113 @@ bool wxHtmlSearchStatus::Search()
 
 
 //--------------------------------------------------------------------------------
 
 
 //--------------------------------------------------------------------------------

-// wxSearchEngine
+// wxHtmlSearchEngine

 //--------------------------------------------------------------------------------
 
 //--------------------------------------------------------------------------------
 

-void wxSearchEngine::LookFor(const wxString& keyword, bool case_sensitive, bool whole_words_only)
+void wxHtmlSearchEngine::LookFor(const wxString& keyword, bool case_sensitive, bool whole_words_only)

 {
     m_CaseSensitive = case_sensitive;
     m_WholeWords = whole_words_only;
 {
     m_CaseSensitive = case_sensitive;
     m_WholeWords = whole_words_only;

-    if (m_Keyword) delete[] m_Keyword;
-    m_Keyword = new wxChar[keyword.Length() + 1];
-    wxStrcpy(m_Keyword, keyword.c_str());
+    m_Keyword = keyword;

 
     if (!m_CaseSensitive)
 
     if (!m_CaseSensitive)

+        m_Keyword.LowerCase();
+}
+
+
+static inline bool WHITESPACE(wxChar c)
+{
+    return c == wxT(' ') || c == wxT('\n') || c == wxT('\r') || c == wxT('\t');
+}
+
+// replace continuous spaces by one single space
+static inline wxString CompressSpaces(const wxString & str)
+{
+    wxString buf;
+    buf.reserve( str.size() );
+
+    bool space_counted = false;
+    for( const wxChar * pstr = str.c_str(); *pstr; ++pstr )

     {
     {

-        for (int i = wxStrlen(m_Keyword) - 1; i >= 0; i--)
+        wxChar ch = *pstr;
+        if( WHITESPACE( ch ) )
+        {
+            if( space_counted )
+            {
+                continue;
+            }
+            ch = wxT(' ');
+            space_counted = true;
+        }
+        else

         {
         {

-            if ((m_Keyword[i] >= wxT('A')) && (m_Keyword[i] <= wxT('Z')))
-                m_Keyword[i] += wxT('a') - wxT('A');
+            space_counted = false;

         }
         }

+        buf += ch;

     }
     }

-}
-
-

 
 

-#define WHITESPACE(c)  (c == ' ' || c == '\n' || c == '\r' || c == '\t')
+    return buf;
+}

 
 

-bool wxSearchEngine::Scan(wxInputStream *stream)
+bool wxHtmlSearchEngine::Scan(const wxFSFile& file)

 {
 {

-    wxASSERT_MSG(m_Keyword != NULL, wxT("wxSearchEngine::LookFor must be called before scanning!"));
+    wxASSERT_MSG(!m_Keyword.empty(), wxT("wxHtmlSearchEngine::LookFor must be called before scanning!"));

 
 

-    int i, j;
-    int lng = stream ->GetSize();
-    int wrd = wxStrlen(m_Keyword);
-    bool found = FALSE;
-    char *buf = new char[lng + 1];
-    stream->Read(buf, lng);
-    buf[lng] = 0;
+    wxHtmlFilterHTML filter;
+    wxString bufStr = filter.ReadFile(file);

 
     if (!m_CaseSensitive)
 
     if (!m_CaseSensitive)

-        for (i = 0; i < lng; i++)
-            if ((buf[i] >= 'A') && (buf[i] <= 'Z')) buf[i] += 'a' - 'A';
+        bufStr.LowerCase();

 
 

-    if (m_WholeWords)
-    {
-        for (i = 0; i < lng - wrd; i++)
+    {   // remove html tags
+        wxString bufStrCopy;
+        bufStrCopy.reserve( bufStr.size() );
+        bool insideTag = false;
+        for (const wxChar * pBufStr = bufStr.c_str(); *pBufStr; ++pBufStr)

         {
         {

-            if (WHITESPACE(buf[i])) continue;
-            j = 0;
-            while ((j < wrd) && (buf[i + j] == m_Keyword[j])) j++;
-            if (j == wrd && WHITESPACE(buf[i + j])) { found = TRUE; break; }
+            wxChar c = *pBufStr;
+            if (insideTag)
+            {
+                if (c == wxT('>'))
+                {
+                    insideTag = false;
+                    // replace the tag by an empty space
+                    c = wxT(' ');
+                }
+                else
+                    continue;
+            }
+            else if (c == wxT('<'))
+            {
+                wxChar nextCh = *(pBufStr + 1);
+                if (nextCh == wxT('/') || !WHITESPACE(nextCh))
+                {
+                    insideTag = true;
+                    continue;
+                }
+            }
+            bufStrCopy += c;

         }
         }

+        bufStr.swap( bufStrCopy );

     }
 
     }
 

-    else
+    wxString keyword = m_Keyword;
+
+    if (m_WholeWords)

     {
     {

-        for (i = 0; i < lng - wrd; i++)
-        {
-            j = 0;
-            while ((j < wrd) && (buf[i + j] == m_Keyword[j])) j++;
-            if (j == wrd) { found = TRUE; break; }
-        }
+        // insert ' ' at the beginning and at the end
+        keyword.insert( 0, wxT(" ") );
+        keyword.append( wxT(" ") );
+        bufStr.insert( 0, wxT(" ") );
+        bufStr.append( wxT(" ") );

     }
 
     }
 

-    delete[] buf;
-    return found;
-}
-
+    // remove continuous spaces
+    keyword = CompressSpaces( keyword );
+    bufStr = CompressSpaces( bufStr );

 
 

+    // finally do the search
+    return bufStr.find( keyword ) != wxString::npos;
+}

 
 #endif
 
 #endif