[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"

#if wxUSE_HTML

#ifdef __BORDLANDC__
#pragma hdrstop
#endif

#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(_T("<"), _T("&lt;"), TRUE);
    doc.Replace(_T(">"), _T("&gt;"), TRUE);
    doc2 = _T("<HTML><BODY><PRE>\n") + doc + _T("\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(_T("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
	16	#if wxUSE_HTML
	17
	18	#ifdef __BORDLANDC__
	19	#pragma hdrstop
	20	#endif
	21
	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
	64	doc.Replace(_T("<"), _T("<"), TRUE);
	65	doc.Replace(_T(">"), _T(">"), TRUE);
	66	doc2 = _T("<HTML><BODY><PRE>\n") + doc + _T("\n</PRE></BODY></HTML>");
	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
130	return (file.GetMimeType().Find(_T("text/html")) == 0);
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