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