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

/////////////////////////////////////////////////////////////////////////////
// Name:        filter.cpp
// Purpose:     wxHtmlFilter - input filter for translating into HTML format
// Author:      Vaclav Slavik
// Copyright:   (c) 1999 Vaclav Slavik
// Licence:     wxWindows Licence
/////////////////////////////////////////////////////////////////////////////


#ifdef __GNUG__
#pragma implementation "htmlfilter.h"
#endif

#include "wx/wxprec.h"

#ifdef __BORLANDC__
    #pragma hdrstop
#endif

#if wxUSE_HTML

#ifndef WXPRECOMP
#endif

#include "wx/html/htmlfilter.h"
#include "wx/html/htmlwin.h"


/*

There is code for several default filters:

*/

IMPLEMENT_ABSTRACT_CLASS(wxHtmlFilter, wxObject)

//--------------------------------------------------------------------------------
// wxHtmlFilterPlainText
//          filter for text/plain or uknown
//--------------------------------------------------------------------------------

IMPLEMENT_DYNAMIC_CLASS(wxHtmlFilterPlainText, wxHtmlFilter)

bool wxHtmlFilterPlainText::CanRead(const wxFSFile& WXUNUSED(file)) const
{
    return TRUE;
}


wxString wxHtmlFilterPlainText::ReadFile(const wxFSFile& file) const
{
    wxInputStream *s = file.GetStream();
    char *src;
    wxString doc, doc2;

    if (s == NULL) return wxEmptyString;
    src = new char[s -> GetSize()+1];
    src[s -> GetSize()] = 0;
    s -> Read(src, s -> GetSize());
    doc = src;
    delete [] src;

    doc.Replace(wxT("<"), wxT("&lt;"), TRUE);
    doc.Replace(wxT(">"), wxT("&gt;"), TRUE);
    doc2 = wxT("<HTML><BODY><PRE>\n") + doc + wxT("\n</PRE></BODY></HTML>");
    return doc2;
}


//--------------------------------------------------------------------------------
// wxHtmlFilterImage
//          filter for image/*
//--------------------------------------------------------------------------------

class wxHtmlFilterImage : public wxHtmlFilter
{
    DECLARE_DYNAMIC_CLASS(wxHtmlFilterImage)

    public:
        virtual bool CanRead(const wxFSFile& file) const;
        virtual wxString ReadFile(const wxFSFile& file) const;
};

IMPLEMENT_DYNAMIC_CLASS(wxHtmlFilterImage, wxHtmlFilter)


bool wxHtmlFilterImage::CanRead(const wxFSFile& file) const
{
    return (file.GetMimeType().Left(6) == "image/");
}


wxString wxHtmlFilterImage::ReadFile(const wxFSFile& file) const
{
    return ("<HTML><BODY><IMG SRC=\"" + file.GetLocation() + "\"></BODY></HTML>");
}


//--------------------------------------------------------------------------------
// wxHtmlFilterPlainText
//          filter for text/plain or uknown
//--------------------------------------------------------------------------------

class wxHtmlFilterHTML : public wxHtmlFilter
{
    DECLARE_DYNAMIC_CLASS(wxHtmlFilterHTML)

    public:
        virtual bool CanRead(const wxFSFile& file) const;
        virtual wxString ReadFile(const wxFSFile& file) const;
};


IMPLEMENT_DYNAMIC_CLASS(wxHtmlFilterHTML, wxHtmlFilter)

bool wxHtmlFilterHTML::CanRead(const wxFSFile& file) const
{
//    return (file.GetMimeType() == "text/html");
// This is true in most case but some page can return:
// "text/html; char-encoding=...."
// So we use Find instead
  return (file.GetMimeType().Find(wxT("text/html")) == 0);
}


wxString wxHtmlFilterHTML::ReadFile(const wxFSFile& file) const
{
    wxInputStream *s = file.GetStream();
    char *src;
    wxString doc;

    if (s == NULL) return wxEmptyString;
    src = new char[s -> GetSize() + 1];
    src[s -> GetSize()] = 0;
    s -> Read(src, s -> GetSize());
    doc = src;
    delete[] src;

    return doc;
}


///// Module:

class wxHtmlFilterModule : public wxModule
{
    DECLARE_DYNAMIC_CLASS(wxHtmlFilterModule)

    public:
        virtual bool OnInit()
        {
            wxHtmlWindow::AddFilter(new wxHtmlFilterHTML);
            wxHtmlWindow::AddFilter(new wxHtmlFilterImage);
            return TRUE;
        }
        virtual void OnExit() {}
};

IMPLEMENT_DYNAMIC_CLASS(wxHtmlFilterModule, wxModule)

#endif
Commit	Line	Data
0413cec5 OK	1	/////////////////////////////////////////////////////////////////////////////
	2	// Name: filter.cpp
	3	// Purpose: wxHtmlFilter - input filter for translating into HTML format
	4	// Author: Vaclav Slavik
	5	// Copyright: (c) 1999 Vaclav Slavik
	6	// Licence: wxWindows Licence
	7	/////////////////////////////////////////////////////////////////////////////
	8
	9
	10	#ifdef __GNUG__
	11	#pragma implementation "htmlfilter.h"
	12	#endif
	13
	14	#include "wx/wxprec.h"
	15
b4715d08 VZ	16	#ifdef __BORLANDC__
b4715d08 VZ	17	#pragma hdrstop
0413cec5 OK	18	#endif
0413cec5 OK	19
b4715d08 VZ	20	#if wxUSE_HTML
b4715d08 VZ	21
0413cec5	22	#ifndef WXPRECOMP
0413cec5 OK	23	#endif
	24
	25	#include "wx/html/htmlfilter.h"
	26	#include "wx/html/htmlwin.h"
	27
	28
	29	/*
	30
	31	There is code for several default filters:
	32
	33	*/
	34
	35	IMPLEMENT_ABSTRACT_CLASS(wxHtmlFilter, wxObject)
	36
	37	//--------------------------------------------------------------------------------
	38	// wxHtmlFilterPlainText
	39	// filter for text/plain or uknown
	40	//--------------------------------------------------------------------------------
	41
	42	IMPLEMENT_DYNAMIC_CLASS(wxHtmlFilterPlainText, wxHtmlFilter)
	43
	44	bool wxHtmlFilterPlainText::CanRead(const wxFSFile& WXUNUSED(file)) const
	45	{
	46	return TRUE;
	47	}
	48
	49
	50
	51	wxString wxHtmlFilterPlainText::ReadFile(const wxFSFile& file) const
	52	{
	53	wxInputStream *s = file.GetStream();
	54	char *src;
	55	wxString doc, doc2;
	56
	57	if (s == NULL) return wxEmptyString;
	58	src = new char[s -> GetSize()+1];
	59	src[s -> GetSize()] = 0;
	60	s -> Read(src, s -> GetSize());
	61	doc = src;
	62	delete [] src;
	63
9a83f860 VZ	64	doc.Replace(wxT("<"), wxT("<"), TRUE);
	65	doc.Replace(wxT(">"), wxT(">"), TRUE);
	66	doc2 = wxT("<HTML><BODY><PRE>\n") + doc + wxT("\n</PRE></BODY></HTML>");
0413cec5 OK	67	return doc2;
	68	}
	69
	70
	71
	72
	73
	74	//--------------------------------------------------------------------------------
	75	// wxHtmlFilterImage
	76	// filter for image/*
	77	//--------------------------------------------------------------------------------
	78
	79	class wxHtmlFilterImage : public wxHtmlFilter
	80	{
	81	DECLARE_DYNAMIC_CLASS(wxHtmlFilterImage)
	82
	83	public:
	84	virtual bool CanRead(const wxFSFile& file) const;
	85	virtual wxString ReadFile(const wxFSFile& file) const;
	86	};
	87
	88	IMPLEMENT_DYNAMIC_CLASS(wxHtmlFilterImage, wxHtmlFilter)
	89
	90
	91
	92	bool wxHtmlFilterImage::CanRead(const wxFSFile& file) const
	93	{
	94	return (file.GetMimeType().Left(6) == "image/");
	95	}
	96
	97
	98
	99	wxString wxHtmlFilterImage::ReadFile(const wxFSFile& file) const
	100	{
	101	return ("<HTML><BODY><IMG SRC=\"" + file.GetLocation() + "\"></BODY></HTML>");
	102	}
	103
	104
	105
	106
	107	//--------------------------------------------------------------------------------
	108	// wxHtmlFilterPlainText
	109	// filter for text/plain or uknown
	110	//--------------------------------------------------------------------------------
	111
	112	class wxHtmlFilterHTML : public wxHtmlFilter
	113	{
	114	DECLARE_DYNAMIC_CLASS(wxHtmlFilterHTML)
	115
	116	public:
	117	virtual bool CanRead(const wxFSFile& file) const;
	118	virtual wxString ReadFile(const wxFSFile& file) const;
	119	};
	120
	121
	122	IMPLEMENT_DYNAMIC_CLASS(wxHtmlFilterHTML, wxHtmlFilter)
	123
	124	bool wxHtmlFilterHTML::CanRead(const wxFSFile& file) const
	125	{
	126	// return (file.GetMimeType() == "text/html");
	127	// This is true in most case but some page can return:
	128	// "text/html; char-encoding=...."
	129	// So we use Find instead
9a83f860	130	return (file.GetMimeType().Find(wxT("text/html")) == 0);
0413cec5 OK	131	}
	132
	133
	134
	135	wxString wxHtmlFilterHTML::ReadFile(const wxFSFile& file) const
	136	{
	137	wxInputStream *s = file.GetStream();
	138	char *src;
	139	wxString doc;
	140
	141	if (s == NULL) return wxEmptyString;
	142	src = new char[s -> GetSize() + 1];
	143	src[s -> GetSize()] = 0;
	144	s -> Read(src, s -> GetSize());
	145	doc = src;
	146	delete[] src;
	147
	148	return doc;
	149	}
	150
	151
	152
	153
	154	///// Module:
	155
	156	class wxHtmlFilterModule : public wxModule
	157	{
	158	DECLARE_DYNAMIC_CLASS(wxHtmlFilterModule)
	159
	160	public:
	161	virtual bool OnInit()
	162	{
	163	wxHtmlWindow::AddFilter(new wxHtmlFilterHTML);
	164	wxHtmlWindow::AddFilter(new wxHtmlFilterImage);
	165	return TRUE;
	166	}
	167	virtual void OnExit() {}
	168	};
	169
	170	IMPLEMENT_DYNAMIC_CLASS(wxHtmlFilterModule, wxModule)
	171
	172	#endif