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helpdata.cpp
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2002-12-16
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/////////////////////////////////////////////////////////////////////////////
// Name: helpdata.cpp
// Purpose: wxHtmlHelpData
// Notes: Based on htmlhelp.cpp, implementing a monolithic
// HTML Help controller class, by Vaclav Slavik
// Author: Harm van der Heijden and Vaclav Slavik
// RCS-ID: $Id: helpdata.cpp,v 1.59.2.5 2002/12/16 10:23:20 JS Exp $
// Copyright: (c) Harm van der Heijden and Vaclav Slavik
// Licence: wxWindows licence
/////////////////////////////////////////////////////////////////////////////
#ifdef __GNUG__
#pragma implementation "helpdata.h"
#endif
// For compilers that support precompilation, includes "wx.h".
#include "wx/wxprec.h"
#ifdef __BORLANDC__
#pragma hdrstop
#endif
#include "wx/defs.h"
#if wxUSE_HTML && wxUSE_STREAMS
#ifndef WXPRECOMP
#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/log.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)
//-----------------------------------------------------------------------------
// static helper functions
//-----------------------------------------------------------------------------
// Reads one line, stores it into buf and returns pointer to new line or NULL.
static const wxChar* ReadLine(const wxChar *line, wxChar *buf, size_t bufsize)
{
wxChar *writeptr = buf;
wxChar *endptr = buf + bufsize - 1;
const wxChar *readptr = line;
while (*readptr != 0 && *readptr != _T('\r') && *readptr != _T('\n') &&
writeptr != endptr)
*(writeptr++) = *(readptr++);
*writeptr = 0;
while (*readptr == _T('\r') || *readptr == _T('\n'))
readptr++;
if (*readptr == 0)
return NULL;
else
return readptr;
}
extern "C" int LINKAGEMODE
wxHtmlHelpIndexCompareFunc(const void *a, const void *b)
{
return wxStricmp(((wxHtmlContentsItem*)a)->m_Name, ((wxHtmlContentsItem*)b)->m_Name);
}
//-----------------------------------------------------------------------------
// HP_Parser
//-----------------------------------------------------------------------------
class HP_Parser : public wxHtmlParser
{
public:
wxObject* GetProduct() { return NULL; }
protected:
virtual void AddText(const wxChar* WXUNUSED(txt)) {}
};
//-----------------------------------------------------------------------------
// HP_TagHandler
//-----------------------------------------------------------------------------
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;
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; }
wxString GetSupportedTags() { return wxT("UL,OBJECT,PARAM"); }
bool HandleTag(const wxHtmlTag& tag);
void WriteOut(wxHtmlContentsItem*& array, int& size);
void ReadIn(wxHtmlContentsItem* array, int size);
};
bool HP_TagHandler::HandleTag(const wxHtmlTag& tag)
{
if (tag.GetName() == wxT("UL"))
{
m_Level++;
ParseInner(tag);
m_Level--;
return TRUE;
}
else if (tag.GetName() == wxT("OBJECT"))
{
m_Name = m_Page = wxEmptyString;
ParseInner(tag);
#if 0
if (!m_Page.IsEmpty())
/* Valid HHW's file may contain only two object tags:
<OBJECT type="text/site properties">
<param name="ImageType" value="Folder">
</OBJECT>
or
<OBJECT type="text/sitemap">
<param name="Name" value="main page">
<param name="Local" value="another.htm">
</OBJECT>
We're interested in the latter. !m_Page.IsEmpty() is valid
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++;
}
return TRUE;
}
else
{ // "PARAM"
if (m_Name == wxEmptyString && tag.GetParam(wxT("NAME")) == wxT("Name"))
m_Name = tag.GetParam(wxT("VALUE"));
if (tag.GetParam(wxT("NAME")) == wxT("Local"))
m_Page = tag.GetParam(wxT("VALUE"));
if (tag.GetParam(wxT("NAME")) == wxT("ID"))
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
//-----------------------------------------------------------------------------
wxString wxHtmlBookRecord::GetFullPath(const wxString &page) const
{
if (wxIsAbsolutePath(page))
return page;
else
return m_BasePath + page;
}
IMPLEMENT_DYNAMIC_CLASS(wxHtmlHelpData, wxObject)
wxHtmlHelpData::wxHtmlHelpData()
{
m_TempPath = wxEmptyString;
m_Contents = NULL;
m_ContentsCnt = 0;
m_Index = NULL;
m_IndexCnt = 0;
}
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)
{
wxFSFile *f;
wxHtmlFilterHTML filter;
wxString buf;
wxString string;
HP_Parser parser;
HP_TagHandler *handler = new HP_TagHandler(book);
parser.AddTagHandler(handler);
f = ( contentsfile.IsEmpty() ? (wxFSFile*) NULL : fsys.OpenFile(contentsfile) );
if (f)
{
buf.clear();
buf = filter.ReadFile(*f);
delete f;
handler->ReadIn(m_Contents, m_ContentsCnt);
parser.Parse(buf);
handler->WriteOut(m_Contents, m_ContentsCnt);
}
else
{
wxLogError(_("Cannot open contents file: %s"), contentsfile.c_str());
}
f = ( indexfile.IsEmpty() ? (wxFSFile*) NULL : fsys.OpenFile(indexfile) );
if (f)
{
buf.clear();
buf = filter.ReadFile(*f);
delete f;
handler->ReadIn(m_Index, m_IndexCnt);
parser.Parse(buf);
handler->WriteOut(m_Index, m_IndexCnt);
}
else if (!indexfile.IsEmpty())
{
wxLogError(_("Cannot open index file: %s"), indexfile.c_str());
}
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 wxChar *str)
{
#if wxUSE_UNICODE
wxWX2MBbuf mbstr(wxConvUTF8.cWX2MB(str));
#else
const wxChar *mbstr = str;
#endif
size_t len = strlen(mbstr)+1;
CacheWriteInt32(f, len);
f->Write(mbstr, len);
}
inline static wxChar* CacheReadString(wxInputStream *f)
{
char *str;
size_t len = (size_t)CacheReadInt32(f);
str = new char[len];
f->Read(str, len);
#if !wxUSE_UNICODE
return str;
#else
wxMB2WXbuf wxstr(wxConvUTF8.cMB2WX(str));
wxChar *outstr = new wxChar[wxStrlen(wxstr)+1];
wxStrcpy(outstr, wxstr);
return outstr;
#endif
}
#define CURRENT_CACHED_BOOK_VERSION 3
bool wxHtmlHelpData::LoadCachedBook(wxHtmlBookRecord *book, wxInputStream *f)
{
int i, st;
wxInt32 version;
/* load header - version info : */
version = CacheReadInt32(f);
if (version != CURRENT_CACHED_BOOK_VERSION)
{
// 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 : */
st = m_ContentsCnt;
m_ContentsCnt += CacheReadInt32(f);
m_Contents = (wxHtmlContentsItem*) realloc(m_Contents,
(m_ContentsCnt / wxHTML_REALLOC_STEP + 1) *
wxHTML_REALLOC_STEP * sizeof(wxHtmlContentsItem));
for (i = st; i < m_ContentsCnt; i++)
{
m_Contents[i].m_Level = CacheReadInt32(f);
m_Contents[i].m_ID = CacheReadInt32(f);
m_Contents[i].m_Name = CacheReadString(f);
m_Contents[i].m_Page = CacheReadString(f);
m_Contents[i].m_Book = book;
}
/* load index : */
st = m_IndexCnt;
m_IndexCnt += CacheReadInt32(f);
m_Index = (wxHtmlContentsItem*) realloc(m_Index, (m_IndexCnt / wxHTML_REALLOC_STEP + 1) *
wxHTML_REALLOC_STEP * sizeof(wxHtmlContentsItem));
for (i = st; i < m_IndexCnt; i++)
{
m_Index[i].m_Name = CacheReadString(f);
m_Index[i].m_Page = CacheReadString(f);
m_Index[i].m_Book = book;
}
return TRUE;
}
bool wxHtmlHelpData::SaveCachedBook(wxHtmlBookRecord *book, wxOutputStream *f)
{
int i;
wxInt32 cnt;
/* save header - version info : */
CacheWriteInt32(f, CURRENT_CACHED_BOOK_VERSION);
/* save contents : */
for (cnt = 0, i = 0; i < m_ContentsCnt; i++)
if (m_Contents[i].m_Book == book && m_Contents[i].m_Level > 0)
cnt++;
CacheWriteInt32(f, cnt);
for (i = 0; i < m_ContentsCnt; i++)
{
if (m_Contents[i].m_Book != book || m_Contents[i].m_Level == 0)
continue;
CacheWriteInt32(f, m_Contents[i].m_Level);
CacheWriteInt32(f, m_Contents[i].m_ID);
CacheWriteString(f, m_Contents[i].m_Name);
CacheWriteString(f, m_Contents[i].m_Page);
}
/* save index : */
for (cnt = 0, i = 0; i < m_IndexCnt; i++)
if (m_Index[i].m_Book == book && m_Index[i].m_Level > 0)
cnt++;
CacheWriteInt32(f, cnt);
for (i = 0; i < m_IndexCnt; i++)
{
if (m_Index[i].m_Book != book || m_Index[i].m_Level == 0)
continue;
CacheWriteString(f, m_Index[i].m_Name);
CacheWriteString(f, m_Index[i].m_Page);
}
return TRUE;
}
void wxHtmlHelpData::SetTempDir(const wxString& path)
{
if (path == wxEmptyString) m_TempPath = path;
else
{
if (wxIsAbsolutePath(path)) m_TempPath = path;
else m_TempPath = wxGetCwd() + _T("/") + path;
if (m_TempPath[m_TempPath.Length() - 1] != _T('/'))
m_TempPath << _T('/');
}
}
static wxString SafeFileName(const wxString& s)
{
wxString res(s);
res.Replace(wxT("#"), wxT("_"));
res.Replace(wxT(":"), wxT("_"));
res.Replace(wxT("\\"), wxT("_"));
res.Replace(wxT("/"), wxT("_"));
return res;
}
bool wxHtmlHelpData::AddBookParam(const wxFSFile& bookfile,
wxFontEncoding encoding,
const wxString& title, const wxString& contfile,
const wxString& indexfile, const wxString& deftopic,
const wxString& path)
{
wxFileSystem fsys;
wxFSFile *fi;
wxHtmlBookRecord *bookr;
int IndexOld = m_IndexCnt,
ContentsOld = m_ContentsCnt;
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(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;
// store the contents index for later
int cont_start = m_ContentsCnt++;
// Try to find cached binary versions:
// 1. save file as book, but with .hhp.cached extension
// 2. same as 1. but in temp path
// 3. otherwise or if cache load failed, load it from MS.
fi = fsys.OpenFile(bookfile.GetLocation() + wxT(".cached"));
if (fi == NULL ||
fi->GetModificationTime() < bookfile.GetModificationTime() ||
!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->GetModificationTime() < bookfile.GetModificationTime() ||
!LoadCachedBook(bookr, fi->GetStream()))
{
LoadMSProject(bookr, fsys, indexfile, contfile);
if (m_TempPath != wxEmptyString)
{
wxFileOutputStream *outs = new wxFileOutputStream(m_TempPath +
SafeFileName(wxFileNameFromPath(bookfile.GetLocation())) + wxT(".cached"));
SaveCachedBook(bookr, outs);
delete outs;
}
}
}
if (fi != NULL) delete fi;
// Now store the contents range
bookr->SetContentsRange(cont_start, m_ContentsCnt);
// Convert encoding, if neccessary:
if (encoding != wxFONTENCODING_SYSTEM)
{
wxFontEncodingArray a = wxEncodingConverter::GetPlatformEquivalents(encoding);
if (a.GetCount() != 0 && a[0] != encoding)
{
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);
}
}
m_BookRecords.Add(bookr);
if (m_IndexCnt > 0)
qsort(m_Index, m_IndexCnt, sizeof(wxHtmlContentsItem), wxHtmlHelpIndexCompareFunc);
return TRUE;
}
bool wxHtmlHelpData::AddBook(const wxString& book)
{
if (book.Right(4).Lower() == wxT(".zip") ||
book.Right(4).Lower() == wxT(".htb") /*html book*/)
{
wxFileSystem fsys;
wxString s;
bool rt = FALSE;
s = fsys.FindFirst(book + wxT("#zip:") + wxT("*.hhp"), wxFILE);
while (!s.IsEmpty())
{
if (AddBook(s)) rt = TRUE;
s = fsys.FindNext();
}
return rt;
}
else
{
wxFSFile *fi;
wxFileSystem fsys;
wxString title = _("noname"),
safetitle,
start = wxEmptyString,
contents = wxEmptyString,
index = wxEmptyString,
charset = wxEmptyString;
fi = fsys.OpenFile(book);
if (fi == NULL)
{
wxLogError(_("Cannot open HTML help book: %s"), book.c_str());
return FALSE;
}
fsys.ChangePathTo(book);
const wxChar *lineptr;
wxChar linebuf[300];
wxString tmp;
wxHtmlFilterPlainText filter;
tmp = filter.ReadFile(*fi);
lineptr = tmp.c_str();
do
{
lineptr = ReadLine(lineptr, linebuf, 300);
for (wxChar *ch = linebuf; *ch != wxT('\0') && *ch != wxT('='); ch++)
*ch = tolower(*ch);
if (wxStrstr(linebuf, _T("title=")) == linebuf)
title = linebuf + wxStrlen(_T("title="));
if (wxStrstr(linebuf, _T("default topic=")) == linebuf)
start = linebuf + wxStrlen(_T("default topic="));
if (wxStrstr(linebuf, _T("index file=")) == linebuf)
index = linebuf + wxStrlen(_T("index file="));
if (wxStrstr(linebuf, _T("contents file=")) == linebuf)
contents = linebuf + wxStrlen(_T("contents file="));
if (wxStrstr(linebuf, _T("charset=")) == linebuf)
charset = linebuf + wxStrlen(_T("charset="));
} while (lineptr != NULL);
wxFontEncoding enc;
if (charset == wxEmptyString) enc = wxFONTENCODING_SYSTEM;
else enc = wxFontMapper::Get()->CharsetToEncoding(charset);
bool rtval = AddBookParam(*fi, enc,
title, contents, index, start, fsys.GetPath());
delete fi;
return rtval;
}
}
wxString wxHtmlHelpData::FindPageByName(const wxString& x)
{
int cnt;
int i;
wxFileSystem fsys;
wxFSFile *f;
wxString url(wxEmptyString);
/* 1. try to open given file: */
cnt = m_BookRecords.GetCount();
for (i = 0; i < cnt; i++)
{
f = fsys.OpenFile(m_BookRecords[i].GetFullPath(x));
if (f)
{
url = m_BookRecords[i].GetFullPath(x);
delete f;
return url;
}
}
/* 2. try to find a book: */
for (i = 0; i < cnt; i++)
{
if (m_BookRecords[i].GetTitle() == x)
{
url = m_BookRecords[i].GetFullPath(m_BookRecords[i].GetStart());
return url;
}
}
/* 3. try to find in contents: */
cnt = m_ContentsCnt;
for (i = 0; i < cnt; i++)
{
if (wxStrcmp(m_Contents[i].m_Name, x) == 0)
{
url = m_Contents[i].GetFullPath();
return url;
}
}
/* 4. try to find in index: */
cnt = m_IndexCnt;
for (i = 0; i < cnt; i++)
{
if (wxStrcmp(m_Index[i].m_Name, x) == 0)
{
url = m_Index[i].GetFullPath();
return url;
}
}
return url;
}
wxString wxHtmlHelpData::FindPageById(int id)
{
int i;
wxString url(wxEmptyString);
for (i = 0; i < m_ContentsCnt; i++)
{
if (m_Contents[i].m_ID == id)
{
url = m_Contents[i].GetFullPath();
return url;
}
}
return url;
}
//----------------------------------------------------------------------------------
// wxHtmlSearchStatus functions
//----------------------------------------------------------------------------------
wxHtmlSearchStatus::wxHtmlSearchStatus(wxHtmlHelpData* data, const wxString& keyword,
bool case_sensitive, bool whole_words_only,
const wxString& book)
{
m_Data = data;
m_Keyword = keyword;
wxHtmlBookRecord* bookr = NULL;
if (book != wxEmptyString)
{
// we have to search in a specific book. Find it first
int i, cnt = data->m_BookRecords.GetCount();
for (i = 0; i < cnt; i++)
if (data->m_BookRecords[i].GetTitle() == book)
{
bookr = &(data->m_BookRecords[i]);
m_CurIndex = bookr->GetContentsStart();
m_MaxIndex = bookr->GetContentsEnd();
break;
}
// check; we won't crash if the book doesn't exist, but it's Bad Anyway.
wxASSERT(bookr);
}
if (! bookr)
{
// no book specified; search all books
m_CurIndex = 0;
m_MaxIndex = m_Data->m_ContentsCnt;
}
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 found = FALSE;
wxChar *thepage;
if (!m_Active)
{
// sanity check. Illegal use, but we'll try to prevent a crash anyway
wxASSERT(m_Active);
return FALSE;
}
m_Name = wxEmptyString;
m_ContentsItem = NULL;
thepage = m_Data->m_Contents[i].m_Page;
m_Active = (++m_CurIndex < m_MaxIndex);
// check if it is same page with different anchor:
if (m_LastPage != NULL)
{
wxChar *p1, *p2;
for (p1 = thepage, p2 = m_LastPage;
*p1 != 0 && *p1 != _T('#') && *p1 == *p2; p1++, p2++) {}
m_LastPage = thepage;
if (*p1 == 0 || *p1 == _T('#'))
return FALSE;
}
else m_LastPage = thepage;
wxFileSystem fsys;
file = fsys.OpenFile(m_Data->m_Contents[i].m_Book->GetFullPath(thepage));
if (file)
{
if (m_Engine.Scan(*file))
{
m_Name = m_Data->m_Contents[i].m_Name;
m_ContentsItem = m_Data->m_Contents + i;
found = TRUE;
}
delete file;
}
return found;
}
//--------------------------------------------------------------------------------
// wxHtmlSearchEngine
//--------------------------------------------------------------------------------
void wxHtmlSearchEngine::LookFor(const wxString& keyword, bool case_sensitive, bool 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());
if (!m_CaseSensitive)
{
for (int i = wxStrlen(m_Keyword) - 1; i >= 0; i--)
{
if ((m_Keyword[i] >= wxT('A')) && (m_Keyword[i] <= wxT('Z')))
m_Keyword[i] += wxT('a') - wxT('A');
}
}
}
static inline bool WHITESPACE(wxChar c)
{
return c == _T(' ') || c == _T('\n') || c == _T('\r') || c == _T('\t');
}
bool wxHtmlSearchEngine::Scan(const wxFSFile& file)
{
wxASSERT_MSG(m_Keyword != NULL, wxT("wxHtmlSearchEngine::LookFor must be called before scanning!"));
int i, j;
int wrd = wxStrlen(m_Keyword);
bool found = FALSE;
wxHtmlFilterHTML filter;
wxString tmp = filter.ReadFile(file);
int lng = tmp.length();
const wxChar *buf = tmp.c_str();
if (!m_CaseSensitive)
for (i = 0; i < lng; i++)
tmp[(size_t)i] = (wxChar)wxTolower(tmp[(size_t)i]);
if (m_WholeWords)
{
for (i = 0; i < lng - wrd; i++)
{
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; }
}
}
else
{
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; }
}
}
return found;
}
#endif