src/html/htmltag.cpp

/////////////////////////////////////////////////////////////////////////////
// Name:        htmltag.cpp
// Purpose:     wxHtmlTag class (represents single tag)
// Author:      Vaclav Slavik
// RCS-ID:      $Id$
// Copyright:   (c) 1999 Vaclav Slavik
// Licence:     wxWindows Licence
/////////////////////////////////////////////////////////////////////////////


#ifdef __GNUG__
#pragma implementation
#endif

#include "wx/wxprec.h"

#include "wx/defs.h"
#if wxUSE_HTML

#ifdef __BORDLANDC__
#pragma hdrstop
#endif

#ifndef WXPRECOMP
#endif

#include "wx/html/htmltag.h"
#include "wx/html/htmlpars.h"
#include <stdio.h> // for vsscanf
#include <stdarg.h>


//-----------------------------------------------------------------------------
// wxHtmlTagsCache
//-----------------------------------------------------------------------------

struct wxHtmlCacheItem
{
    // this is "pos" value passed to wxHtmlTag's constructor.
    // it is position of '<' character of the tag
    int Key;

    // end positions for the tag:
    // end1 is '<' of ending tag,
    // end2 is '>' or both are
    // -1 if there is no ending tag for this one...
    // or -2 if this is ending tag  </...>
    int End1, End2;

    // name of this tag
    wxChar *Name;
};


IMPLEMENT_CLASS(wxHtmlTagsCache,wxObject)

#define CACHE_INCREMENT  64

wxHtmlTagsCache::wxHtmlTagsCache(const wxString& source)
{
    const wxChar *src = source.c_str();
    int i, tg, pos, stpos;
    int lng = source.Length();
    wxChar dummy[256];

    m_Cache = NULL;
    m_CacheSize = 0;
    m_CachePos = 0;

    pos = 0;
    while (pos < lng)
    {
        if (src[pos] == wxT('<'))   // tag found:
        {
            if (m_CacheSize % CACHE_INCREMENT == 0)
                m_Cache = (wxHtmlCacheItem*) realloc(m_Cache, (m_CacheSize + CACHE_INCREMENT) * sizeof(wxHtmlCacheItem));
            tg = m_CacheSize++;
            m_Cache[tg].Key = stpos = pos++;
            dummy[0] = 0; i = 0;
            while (pos < lng &&
                   src[pos] != wxT('>') &&
                   src[pos] != wxT(' ') && src[pos] != wxT('\r') &&
                   src[pos] != wxT('\n') && src[pos] != wxT('\t'))
            {
                dummy[i] = src[pos++];
                if ((dummy[i] >= wxT('a')) && (dummy[i] <= wxT('z'))) dummy[i] -= (wxT('a') - wxT('A'));
                i++;
            }
            dummy[i] = 0;
            m_Cache[tg].Name = new wxChar[i+1];
            memcpy(m_Cache[tg].Name, dummy, (i+1)*sizeof(wxChar));

            while (pos < lng && src[pos] != wxT('>')) pos++;

            if (src[stpos+1] == wxT('/')) // ending tag:
            {
                m_Cache[tg].End1 = m_Cache[tg].End2 = -2;
                // find matching begin tag:
                for (i = tg; i >= 0; i--)
                    if ((m_Cache[i].End1 == -1) && (wxStrcmp(m_Cache[i].Name, dummy+1) == 0))
                    {
                        m_Cache[i].End1 = stpos;
                        m_Cache[i].End2 = pos + 1;
                        break;
                    }
            }
            else
            {
                m_Cache[tg].End1 = m_Cache[tg].End2 = -1;
            }
        }

        pos++;
    }

    // ok, we're done, now we'll free .Name members of cache - we don't need it anymore:
    for (i = 0; i < m_CacheSize; i++)
    {
        delete[] m_Cache[i].Name;
        m_Cache[i].Name = NULL;
    }
}

void wxHtmlTagsCache::QueryTag(int at, int* end1, int* end2)
{
    if (m_Cache == NULL) return;
    if (m_Cache[m_CachePos].Key != at)
    {
        int delta = (at < m_Cache[m_CachePos].Key) ? -1 : 1;
        do
        {
            m_CachePos += delta;
        }
        while (m_Cache[m_CachePos].Key != at);
    }
    *end1 = m_Cache[m_CachePos].End1;
    *end2 = m_Cache[m_CachePos].End2;
}


//-----------------------------------------------------------------------------
// wxHtmlTag
//-----------------------------------------------------------------------------

IMPLEMENT_CLASS(wxHtmlTag,wxObject)

wxHtmlTag::wxHtmlTag(wxHtmlTag *parent,
                     const wxString& source, int pos, int end_pos,
                     wxHtmlTagsCache *cache,
                     wxHtmlEntitiesParser *entParser) : wxObject()
{
    /* Setup DOM relations */

    m_Next = NULL;
    m_FirstChild = m_LastChild = NULL;
    m_Parent = parent;
    if (parent)
    {
        m_Prev = m_Parent->m_LastChild;
        if (m_Prev == NULL)
            m_Parent->m_FirstChild = this;
        else
            m_Prev->m_Next = this;
        m_Parent->m_LastChild = this;
    }
    else
        m_Prev = NULL;

    /* Find parameters and their values: */

    int i;
    wxChar c;

    // fill-in name, params and begin pos:
    i = pos+1;

    // find tag's name and convert it to uppercase:
    while ((i < end_pos) &&
           ((c = source[i++]) != wxT(' ') && c != wxT('\r') &&
             c != wxT('\n') && c != wxT('\t') &&
             c != wxT('>')))
    {
        if ((c >= wxT('a')) && (c <= wxT('z')))
            c -= (wxT('a') - wxT('A'));
        m_Name << c;
    }

    // if the tag has parameters, read them and "normalize" them,
    // i.e. convert to uppercase, replace whitespaces by spaces and
    // remove whitespaces around '=':
    if (source[i-1] != wxT('>'))
    {
        #define IS_WHITE(c) (c == wxT(' ') || c == wxT('\r') || \
                             c == wxT('\n') || c == wxT('\t'))
        wxString pname, pvalue;
        wxChar quote;
        enum
        {
            ST_BEFORE_NAME = 1,
            ST_NAME,
            ST_BEFORE_EQ,
            ST_BEFORE_VALUE,
            ST_VALUE
        } state;

        quote = 0;
        state = ST_BEFORE_NAME;
        while (i < end_pos)
        {
            c = source[i++];

            if (c == wxT('>') && !(state == ST_VALUE && quote != 0))
            {
                if (state == ST_BEFORE_EQ || state == ST_NAME)
                {
                    m_ParamNames.Add(pname);
                    m_ParamValues.Add(wxEmptyString);
                }
                else if (state == ST_VALUE && quote == 0)
                {
                    m_ParamNames.Add(pname);
                    if (entParser)
                        m_ParamValues.Add(entParser->Parse(pvalue));
                    else
                        m_ParamValues.Add(pvalue);
                }
                break;
            }
            switch (state)
            {
                case ST_BEFORE_NAME:
                    if (!IS_WHITE(c))
                    {
                        pname = c;
                        state = ST_NAME;
                    }
                    break;
                case ST_NAME:
                    if (IS_WHITE(c))
                        state = ST_BEFORE_EQ;
                    else if (c == wxT('='))
                        state = ST_BEFORE_VALUE;
                    else
                        pname << c;
                    break;
                case ST_BEFORE_EQ:
                    if (c == wxT('='))
                        state = ST_BEFORE_VALUE;
                    else if (!IS_WHITE(c))
                    {
                        m_ParamNames.Add(pname);
                        m_ParamValues.Add(wxEmptyString);
                        pname = c;
                        state = ST_NAME;
                    }
                    break;
                case ST_BEFORE_VALUE:
                    if (!IS_WHITE(c))
                    {
                        if (c == wxT('"') || c == wxT('\''))
                            quote = c, pvalue = wxEmptyString;
                        else
                            quote = 0, pvalue = c;
                        state = ST_VALUE;
                    }
                    break;
                case ST_VALUE:
                    if ((quote != 0 && c == quote) ||
                        (quote == 0 && IS_WHITE(c)))
                    {
                        m_ParamNames.Add(pname);
                        if (quote == 0)
                        {
                            // VS: backward compatibility, no real reason,
                            //     but wxHTML code relies on this... :(
                            pvalue.MakeUpper();
                        }
                        if (entParser)
                            m_ParamValues.Add(entParser->Parse(pvalue));
                        else
                            m_ParamValues.Add(pvalue);
                        state = ST_BEFORE_NAME;
                    }
                    else
                        pvalue << c;
                    break;
            }
        }

        #undef IS_WHITE
   }
   m_Begin = i;

   cache->QueryTag(pos, &m_End1, &m_End2);
   if (m_End1 > end_pos) m_End1 = end_pos;
   if (m_End2 > end_pos) m_End2 = end_pos;
}

wxHtmlTag::~wxHtmlTag()
{
    wxHtmlTag *t1, *t2;
    t1 = m_FirstChild;
    while (t1)
    {
        t2 = t1->GetNextSibling();
        delete t1;
        t1 = t2;
    }
}

bool wxHtmlTag::HasParam(const wxString& par) const
{
    return (m_ParamNames.Index(par, FALSE) != wxNOT_FOUND);
}

wxString wxHtmlTag::GetParam(const wxString& par, bool with_commas) const
{
    int index = m_ParamNames.Index(par, FALSE);
    if (index == wxNOT_FOUND)
        return wxEmptyString;
    if (with_commas)
    {
        // VS: backward compatibility, seems to be never used by wxHTML...
        wxString s;
        s << wxT('"') << m_ParamValues[index] << wxT('"');
        return s;
    }
    else
        return m_ParamValues[index];
}

int wxHtmlTag::ScanParam(const wxString& par, wxChar *format, void *param) const
{
    wxString parval = GetParam(par);
    return wxSscanf(parval, format, param);
}

bool wxHtmlTag::GetParamAsColour(const wxString& par, wxColour *clr) const
{
    wxString str = GetParam(par);

    if (str.IsEmpty()) return FALSE;
    if (str.GetChar(0) == wxT('#'))
    {
        unsigned long tmp;
        if (ScanParam(par, wxT("#%lX"), &tmp) != 1)
            return FALSE;
        *clr = wxColour((unsigned char)((tmp & 0xFF0000) >> 16),
					    (unsigned char)((tmp & 0x00FF00) >> 8),
					    (unsigned char)(tmp & 0x0000FF));
        return TRUE;
    }
    else
    {
        // Handle colours defined in HTML 4.0:
        #define HTML_COLOUR(name,r,g,b)                 \
            if (str.IsSameAs(wxT(name), FALSE))         \
                { *clr = wxColour(r,g,b); return TRUE; }
        HTML_COLOUR("black",   0x00,0x00,0x00)
        HTML_COLOUR("silver",  0xC0,0xC0,0xC0)
        HTML_COLOUR("gray",    0x80,0x80,0x80)
        HTML_COLOUR("white",   0xFF,0xFF,0xFF)
        HTML_COLOUR("maroon",  0x80,0x00,0x00)
        HTML_COLOUR("red",     0xFF,0x00,0x00)
        HTML_COLOUR("purple",  0x80,0x00,0x80)
        HTML_COLOUR("fuchsia", 0xFF,0x00,0xFF)
        HTML_COLOUR("green",   0x00,0x80,0x00)
        HTML_COLOUR("lime",    0x00,0xFF,0x00)
        HTML_COLOUR("olive",   0x80,0x80,0x00)
        HTML_COLOUR("yellow",  0xFF,0xFF,0x00)
        HTML_COLOUR("navy",    0x00,0x00,0x80)
        HTML_COLOUR("blue",    0x00,0x00,0xFF)
        HTML_COLOUR("teal",    0x00,0x80,0x80)
        HTML_COLOUR("aqua",    0x00,0xFF,0xFF)
        #undef HTML_COLOUR
        return FALSE;
    }
}

bool wxHtmlTag::GetParamAsInt(const wxString& par, int *clr) const
{
    if (!HasParam(par)) return FALSE;
    long i;
    bool succ = GetParam(par).ToLong(&i);
    *clr = (int)i;
    return succ;
}

wxString wxHtmlTag::GetAllParams() const
{
    // VS: this function is for backward compatiblity only,
    //     never used by wxHTML
    wxString s;
    size_t cnt = m_ParamNames.GetCount();
    for (size_t i = 0; i < cnt; i++)
    {
        s << m_ParamNames[i];
        s << wxT('=');
        if (m_ParamValues[i].Find(wxT('"')) != wxNOT_FOUND)
            s << wxT('\'') << m_ParamValues[i] << wxT('\'');
        else
            s << wxT('"') << m_ParamValues[i] << wxT('"');
    }
    return s;
}

wxHtmlTag *wxHtmlTag::GetFirstSibling() const
{
    if (m_Parent)
        return m_Parent->m_FirstChild;
    else
    {
        wxHtmlTag *cur = (wxHtmlTag*)this;
        while (cur->m_Prev)
            cur = cur->m_Prev;
        return cur;
    }
}

wxHtmlTag *wxHtmlTag::GetLastSibling() const
{
    if (m_Parent)
        return m_Parent->m_LastChild;
    else
    {
        wxHtmlTag *cur = (wxHtmlTag*)this;
        while (cur->m_Next)
            cur = cur->m_Next;
        return cur;
    }
}

wxHtmlTag *wxHtmlTag::GetNextTag() const
{
    if (m_FirstChild) return m_FirstChild;
    if (m_Next) return m_Next;
    wxHtmlTag *cur = m_Parent;
    if (!cur) return NULL;
    while (cur->m_Parent && !cur->m_Next)
        cur = cur->m_Parent;
    return cur->m_Next;
}

#endif
Commit	Line	Data
	1	/////////////////////////////////////////////////////////////////////////////
	2	// Name: htmltag.cpp
	3	// Purpose: wxHtmlTag class (represents single tag)
	4	// Author: Vaclav Slavik
	5	// RCS-ID: $Id$
	6	// Copyright: (c) 1999 Vaclav Slavik
	7	// Licence: wxWindows Licence
	8	/////////////////////////////////////////////////////////////////////////////
	9
	10
	11	#ifdef __GNUG__
	12	#pragma implementation
	13	#endif
	14
	15	#include "wx/wxprec.h"
	16
	17	#include "wx/defs.h"
	18	#if wxUSE_HTML
	19
	20	#ifdef __BORDLANDC__
	21	#pragma hdrstop
	22	#endif
	23
	24	#ifndef WXPRECOMP
	25	#endif
	26
	27	#include "wx/html/htmltag.h"
	28	#include "wx/html/htmlpars.h"
	29	#include <stdio.h> // for vsscanf
	30	#include <stdarg.h>
	31
	32
	33	//-----------------------------------------------------------------------------
	34	// wxHtmlTagsCache
	35	//-----------------------------------------------------------------------------
	36
	37	struct wxHtmlCacheItem
	38	{
	39	// this is "pos" value passed to wxHtmlTag's constructor.
	40	// it is position of '<' character of the tag
	41	int Key;
	42
	43	// end positions for the tag:
	44	// end1 is '<' of ending tag,
	45	// end2 is '>' or both are
	46	// -1 if there is no ending tag for this one...
	47	// or -2 if this is ending tag </...>
	48	int End1, End2;
	49
	50	// name of this tag
	51	wxChar *Name;
	52	};
	53
	54
	55	IMPLEMENT_CLASS(wxHtmlTagsCache,wxObject)
	56
	57	#define CACHE_INCREMENT 64
	58
	59	wxHtmlTagsCache::wxHtmlTagsCache(const wxString& source)
	60	{
	61	const wxChar *src = source.c_str();
	62	int i, tg, pos, stpos;
	63	int lng = source.Length();
	64	wxChar dummy[256];
	65
	66	m_Cache = NULL;
	67	m_CacheSize = 0;
	68	m_CachePos = 0;
	69
	70	pos = 0;
	71	while (pos < lng)
	72	{
	73	if (src[pos] == wxT('<')) // tag found:
	74	{
	75	if (m_CacheSize % CACHE_INCREMENT == 0)
	76	m_Cache = (wxHtmlCacheItem) realloc(m_Cache, (m_CacheSize + CACHE_INCREMENT) sizeof(wxHtmlCacheItem));
	77	tg = m_CacheSize++;
	78	m_Cache[tg].Key = stpos = pos++;
	79	dummy[0] = 0; i = 0;
	80	while (pos < lng &&
	81	src[pos] != wxT('>') &&
	82	src[pos] != wxT(' ') && src[pos] != wxT('\r') &&
	83	src[pos] != wxT('\n') && src[pos] != wxT('\t'))
	84	{
	85	dummy[i] = src[pos++];
	86	if ((dummy[i] >= wxT('a')) && (dummy[i] <= wxT('z'))) dummy[i] -= (wxT('a') - wxT('A'));
	87	i++;
	88	}
	89	dummy[i] = 0;
	90	m_Cache[tg].Name = new wxChar[i+1];
	91	memcpy(m_Cache[tg].Name, dummy, (i+1)*sizeof(wxChar));
	92
	93	while (pos < lng && src[pos] != wxT('>')) pos++;
	94
	95	if (src[stpos+1] == wxT('/')) // ending tag:
	96	{
	97	m_Cache[tg].End1 = m_Cache[tg].End2 = -2;
	98	// find matching begin tag:
	99	for (i = tg; i >= 0; i--)
	100	if ((m_Cache[i].End1 == -1) && (wxStrcmp(m_Cache[i].Name, dummy+1) == 0))
	101	{
	102	m_Cache[i].End1 = stpos;
	103	m_Cache[i].End2 = pos + 1;
	104	break;
	105	}
	106	}
	107	else
	108	{
	109	m_Cache[tg].End1 = m_Cache[tg].End2 = -1;
	110	}
	111	}
	112
	113	pos++;
	114	}
	115
	116	// ok, we're done, now we'll free .Name members of cache - we don't need it anymore:
	117	for (i = 0; i < m_CacheSize; i++)
	118	{
	119	delete[] m_Cache[i].Name;
	120	m_Cache[i].Name = NULL;
	121	}
	122	}
	123
	124	void wxHtmlTagsCache::QueryTag(int at, int* end1, int* end2)
	125	{
	126	if (m_Cache == NULL) return;
	127	if (m_Cache[m_CachePos].Key != at)
	128	{
	129	int delta = (at < m_Cache[m_CachePos].Key) ? -1 : 1;
	130	do
	131	{
	132	m_CachePos += delta;
	133	}
	134	while (m_Cache[m_CachePos].Key != at);
	135	}
	136	*end1 = m_Cache[m_CachePos].End1;
	137	*end2 = m_Cache[m_CachePos].End2;
	138	}
	139
	140
	141
	142
	143	//-----------------------------------------------------------------------------
	144	// wxHtmlTag
	145	//-----------------------------------------------------------------------------
	146
	147	IMPLEMENT_CLASS(wxHtmlTag,wxObject)
	148
	149	wxHtmlTag::wxHtmlTag(wxHtmlTag *parent,
	150	const wxString& source, int pos, int end_pos,
	151	wxHtmlTagsCache *cache,
	152	wxHtmlEntitiesParser *entParser) : wxObject()
	153	{
	154	/* Setup DOM relations */
	155
	156	m_Next = NULL;
	157	m_FirstChild = m_LastChild = NULL;
	158	m_Parent = parent;
	159	if (parent)
	160	{
	161	m_Prev = m_Parent->m_LastChild;
	162	if (m_Prev == NULL)
	163	m_Parent->m_FirstChild = this;
	164	else
	165	m_Prev->m_Next = this;
	166	m_Parent->m_LastChild = this;
	167	}
	168	else
	169	m_Prev = NULL;
	170
	171	/* Find parameters and their values: */
	172
	173	int i;
	174	wxChar c;
	175
	176	// fill-in name, params and begin pos:
	177	i = pos+1;
	178
	179	// find tag's name and convert it to uppercase:
	180	while ((i < end_pos) &&
	181	((c = source[i++]) != wxT(' ') && c != wxT('\r') &&
	182	c != wxT('\n') && c != wxT('\t') &&
	183	c != wxT('>')))
	184	{
	185	if ((c >= wxT('a')) && (c <= wxT('z')))
	186	c -= (wxT('a') - wxT('A'));
	187	m_Name << c;
	188	}
	189
	190	// if the tag has parameters, read them and "normalize" them,
	191	// i.e. convert to uppercase, replace whitespaces by spaces and
	192	// remove whitespaces around '=':
	193	if (source[i-1] != wxT('>'))
	194	{
	195	#define IS_WHITE(c) (c == wxT(' ') \|\| c == wxT('\r') \|\| \
	196	c == wxT('\n') \|\| c == wxT('\t'))
	197	wxString pname, pvalue;
	198	wxChar quote;
	199	enum
	200	{
	201	ST_BEFORE_NAME = 1,
	202	ST_NAME,
	203	ST_BEFORE_EQ,
	204	ST_BEFORE_VALUE,
	205	ST_VALUE
	206	} state;
	207
	208	quote = 0;
	209	state = ST_BEFORE_NAME;
	210	while (i < end_pos)
	211	{
	212	c = source[i++];
	213
	214	if (c == wxT('>') && !(state == ST_VALUE && quote != 0))
	215	{
	216	if (state == ST_BEFORE_EQ \|\| state == ST_NAME)
	217	{
	218	m_ParamNames.Add(pname);
	219	m_ParamValues.Add(wxEmptyString);
	220	}
	221	else if (state == ST_VALUE && quote == 0)
	222	{
	223	m_ParamNames.Add(pname);
	224	if (entParser)
	225	m_ParamValues.Add(entParser->Parse(pvalue));
	226	else
	227	m_ParamValues.Add(pvalue);
	228	}
	229	break;
	230	}
	231	switch (state)
	232	{
	233	case ST_BEFORE_NAME:
	234	if (!IS_WHITE(c))
	235	{
	236	pname = c;
	237	state = ST_NAME;
	238	}
	239	break;
	240	case ST_NAME:
	241	if (IS_WHITE(c))
	242	state = ST_BEFORE_EQ;
	243	else if (c == wxT('='))
	244	state = ST_BEFORE_VALUE;
	245	else
	246	pname << c;
	247	break;
	248	case ST_BEFORE_EQ:
	249	if (c == wxT('='))
	250	state = ST_BEFORE_VALUE;
	251	else if (!IS_WHITE(c))
	252	{
	253	m_ParamNames.Add(pname);
	254	m_ParamValues.Add(wxEmptyString);
	255	pname = c;
	256	state = ST_NAME;
	257	}
	258	break;
	259	case ST_BEFORE_VALUE:
	260	if (!IS_WHITE(c))
	261	{
	262	if (c == wxT('"') \|\| c == wxT('\''))
	263	quote = c, pvalue = wxEmptyString;
	264	else
	265	quote = 0, pvalue = c;
	266	state = ST_VALUE;
	267	}
	268	break;
	269	case ST_VALUE:
	270	if ((quote != 0 && c == quote) \|\|
	271	(quote == 0 && IS_WHITE(c)))
	272	{
	273	m_ParamNames.Add(pname);
	274	if (quote == 0)
	275	{
	276	// VS: backward compatibility, no real reason,
	277	// but wxHTML code relies on this... :(
	278	pvalue.MakeUpper();
	279	}
	280	if (entParser)
	281	m_ParamValues.Add(entParser->Parse(pvalue));
	282	else
	283	m_ParamValues.Add(pvalue);
	284	state = ST_BEFORE_NAME;
	285	}
	286	else
	287	pvalue << c;
	288	break;
	289	}
	290	}
	291
	292	#undef IS_WHITE
	293	}
	294	m_Begin = i;
	295
	296	cache->QueryTag(pos, &m_End1, &m_End2);
	297	if (m_End1 > end_pos) m_End1 = end_pos;
	298	if (m_End2 > end_pos) m_End2 = end_pos;
	299	}
	300
	301	wxHtmlTag::~wxHtmlTag()
	302	{
	303	wxHtmlTag t1, t2;
	304	t1 = m_FirstChild;
	305	while (t1)
	306	{
	307	t2 = t1->GetNextSibling();
	308	delete t1;
	309	t1 = t2;
	310	}
	311	}
	312
	313	bool wxHtmlTag::HasParam(const wxString& par) const
	314	{
	315	return (m_ParamNames.Index(par, FALSE) != wxNOT_FOUND);
	316	}
	317
	318	wxString wxHtmlTag::GetParam(const wxString& par, bool with_commas) const
	319	{
	320	int index = m_ParamNames.Index(par, FALSE);
	321	if (index == wxNOT_FOUND)
	322	return wxEmptyString;
	323	if (with_commas)
	324	{
	325	// VS: backward compatibility, seems to be never used by wxHTML...
	326	wxString s;
	327	s << wxT('"') << m_ParamValues[index] << wxT('"');
	328	return s;
	329	}
	330	else
	331	return m_ParamValues[index];
	332	}
	333
	334	int wxHtmlTag::ScanParam(const wxString& par, wxChar format, void param) const
	335	{
	336	wxString parval = GetParam(par);
	337	return wxSscanf(parval, format, param);
	338	}
	339
	340	bool wxHtmlTag::GetParamAsColour(const wxString& par, wxColour *clr) const
	341	{
	342	wxString str = GetParam(par);
	343
	344	if (str.IsEmpty()) return FALSE;
	345	if (str.GetChar(0) == wxT('#'))
	346	{
	347	unsigned long tmp;
	348	if (ScanParam(par, wxT("#%lX"), &tmp) != 1)
	349	return FALSE;
	350	*clr = wxColour((unsigned char)((tmp & 0xFF0000) >> 16),
	351	(unsigned char)((tmp & 0x00FF00) >> 8),
	352	(unsigned char)(tmp & 0x0000FF));
	353	return TRUE;
	354	}
	355	else
	356	{
	357	// Handle colours defined in HTML 4.0:
	358	#define HTML_COLOUR(name,r,g,b) \
	359	if (str.IsSameAs(wxT(name), FALSE)) \
	360	{ *clr = wxColour(r,g,b); return TRUE; }
	361	HTML_COLOUR("black", 0x00,0x00,0x00)
	362	HTML_COLOUR("silver", 0xC0,0xC0,0xC0)
	363	HTML_COLOUR("gray", 0x80,0x80,0x80)
	364	HTML_COLOUR("white", 0xFF,0xFF,0xFF)
	365	HTML_COLOUR("maroon", 0x80,0x00,0x00)
	366	HTML_COLOUR("red", 0xFF,0x00,0x00)
	367	HTML_COLOUR("purple", 0x80,0x00,0x80)
	368	HTML_COLOUR("fuchsia", 0xFF,0x00,0xFF)
	369	HTML_COLOUR("green", 0x00,0x80,0x00)
	370	HTML_COLOUR("lime", 0x00,0xFF,0x00)
	371	HTML_COLOUR("olive", 0x80,0x80,0x00)
	372	HTML_COLOUR("yellow", 0xFF,0xFF,0x00)
	373	HTML_COLOUR("navy", 0x00,0x00,0x80)
	374	HTML_COLOUR("blue", 0x00,0x00,0xFF)
	375	HTML_COLOUR("teal", 0x00,0x80,0x80)
	376	HTML_COLOUR("aqua", 0x00,0xFF,0xFF)
	377	#undef HTML_COLOUR
	378	return FALSE;
	379	}
	380	}
	381
	382	bool wxHtmlTag::GetParamAsInt(const wxString& par, int *clr) const
	383	{
	384	if (!HasParam(par)) return FALSE;
	385	long i;
	386	bool succ = GetParam(par).ToLong(&i);
	387	*clr = (int)i;
	388	return succ;
	389	}
	390
	391	wxString wxHtmlTag::GetAllParams() const
	392	{
	393	// VS: this function is for backward compatiblity only,
	394	// never used by wxHTML
	395	wxString s;
	396	size_t cnt = m_ParamNames.GetCount();
	397	for (size_t i = 0; i < cnt; i++)
	398	{
	399	s << m_ParamNames[i];
	400	s << wxT('=');
	401	if (m_ParamValues[i].Find(wxT('"')) != wxNOT_FOUND)
	402	s << wxT('\'') << m_ParamValues[i] << wxT('\'');
	403	else
	404	s << wxT('"') << m_ParamValues[i] << wxT('"');
	405	}
	406	return s;
	407	}
	408
	409	wxHtmlTag *wxHtmlTag::GetFirstSibling() const
	410	{
	411	if (m_Parent)
	412	return m_Parent->m_FirstChild;
	413	else
	414	{
	415	wxHtmlTag cur = (wxHtmlTag)this;
	416	while (cur->m_Prev)
	417	cur = cur->m_Prev;
	418	return cur;
	419	}
	420	}
	421
	422	wxHtmlTag *wxHtmlTag::GetLastSibling() const
	423	{
	424	if (m_Parent)
	425	return m_Parent->m_LastChild;
	426	else
	427	{
	428	wxHtmlTag cur = (wxHtmlTag)this;
	429	while (cur->m_Next)
	430	cur = cur->m_Next;
	431	return cur;
	432	}
	433	}
	434
	435	wxHtmlTag *wxHtmlTag::GetNextTag() const
	436	{
	437	if (m_FirstChild) return m_FirstChild;
	438	if (m_Next) return m_Next;
	439	wxHtmlTag *cur = m_Parent;
	440	if (!cur) return NULL;
	441	while (cur->m_Parent && !cur->m_Next)
	442	cur = cur->m_Parent;
	443	return cur->m_Next;
	444	}
	445
	446	#endif