private void ProcessStartTagAttributes(HtmlDtd.TagDefinition tagDef)
{
switch (tagDef.tagIndex)
{
case HtmlTagIndex.A:
if (outputAnchorLinks)
{
foreach (var attr in token.Attributes)
{
if (attr.NameIndex == HtmlNameIndex.Href)
{
if (attr.IsAttrBegin)
{
urlScratch.Reset();
}
urlScratch.AppendHtmlAttributeValue(attr, HtmlSupport.MaxAttributeSize);
break;
}
}
if (token.IsTagEnd)
{
var url = urlScratch.BufferString;
url.TrimWhitespace();
if (url.Length != 0 && url[0] != '#' && url[0] != '?' && url[0] != ';')
{
if (!lineStarted)
{
StartParagraphOrLine();
}
var urlString = url.ToString();
if (urlString.IndexOf(' ') != -1)
{
urlString = urlString.Replace(" ", "%20");
}
output.OpenAnchor(urlString);
insideAnchor = true;
if (urlCompareSink == null)
{
urlCompareSink = new UrlCompareSink();
}
urlCompareSink.Initialize(urlString);
}
urlScratch.Reset();
}
}
break;
case HtmlTagIndex.Image:
case HtmlTagIndex.Img:
if (outputImageLinks)
{
foreach (var attr in token.Attributes)
{
if (attr.NameIndex == HtmlNameIndex.Src)
{
if (attr.IsAttrBegin)
{
urlScratch.Reset();
}
urlScratch.AppendHtmlAttributeValue(attr, HtmlSupport.MaxAttributeSize);
}
else if (attr.NameIndex == HtmlNameIndex.Alt)
{
if (attr.IsAttrBegin)
{
imageAltText.Reset();
}
imageAltText.AppendHtmlAttributeValue(attr, HtmlSupport.MaxAttributeSize);
}
else if (attr.NameIndex == HtmlNameIndex.Height)
{
if (!attr.Value.IsEmpty)
{
PropertyValue value;
if (attr.Value.IsContiguous)
{
value = HtmlSupport.ParseNumber(attr.Value.ContiguousBufferString, HtmlSupport.NumberParseFlags.Length);
}
else
{
scratch.Reset();
scratch.AppendHtmlAttributeValue(attr, HtmlSupport.MaxAttributeSize);
value = HtmlSupport.ParseNumber(scratch.BufferString, HtmlSupport.NumberParseFlags.Length);
}
if (value.IsAbsRelLength)
{
imageHeightPixels = value.PixelsInteger;
if (imageHeightPixels == 0)
{
imageHeightPixels = 1;
}
}
}
}
else if (attr.NameIndex == HtmlNameIndex.Width)
{
if (!attr.Value.IsEmpty)
{
PropertyValue value;
if (attr.Value.IsContiguous)
{
value = HtmlSupport.ParseNumber(attr.Value.ContiguousBufferString, HtmlSupport.NumberParseFlags.Length);
}
else
{
scratch.Reset();
scratch.AppendHtmlAttributeValue(attr, HtmlSupport.MaxAttributeSize);
value = HtmlSupport.ParseNumber(scratch.BufferString, HtmlSupport.NumberParseFlags.Length);
}
if (value.IsAbsRelLength)
{
imageWidthPixels = value.PixelsInteger;
if (imageWidthPixels == 0)
{
imageWidthPixels = 1;
}
}
}
}
}
if (token.IsTagEnd)
{
string urlString = null;
string altString = null;
var alt = imageAltText.BufferString;
alt.TrimWhitespace();
if (alt.Length != 0)
{
altString = alt.ToString();
}
if (altString == null || output.ImageRenderingCallbackDefined)
{
var url = urlScratch.BufferString;
url.TrimWhitespace();
if (url.Length != 0)
{
urlString = url.ToString();
}
}
if (!lineStarted)
{
StartParagraphOrLine();
}
output.OutputImage(urlString, altString, imageWidthPixels, imageHeightPixels);
urlScratch.Reset();
imageAltText.Reset();
imageHeightPixels = 0;
imageWidthPixels = 0;
}
}
break;
case HtmlTagIndex.P:
if (token.Attributes.Find(HtmlNameIndex.Class) && token.Attributes.Current.Value.CaseInsensitiveCompareEqual("msonormal"))
{
wideGap = false;
nextParagraphCloseWideGap = false;
}
break;
case HtmlTagIndex.Font:
foreach (var attr in token.Attributes)
{
if (attr.NameIndex == HtmlNameIndex.Face)
{
scratch.Reset();
scratch.AppendHtmlAttributeValue(attr, HtmlSupport.MaxAttributeSize);
var fontRecognizer = new RecognizeInterestingFontName();
for (var i = 0; i < scratch.Length && !fontRecognizer.IsRejected; i++)
{
fontRecognizer.AddCharacter(scratch.Buffer[i]);
}
textMapping = fontRecognizer.TextMapping;
break;
}
}
break;
case HtmlTagIndex.Span:
foreach (var attr in token.Attributes)
{
if (attr.NameIndex == HtmlNameIndex.Style)
{
scratch.Reset();
scratch.AppendHtmlAttributeValue(attr, HtmlSupport.MaxAttributeSize);
var fontRecognizer = new RecognizeInterestingFontNameInInlineStyle();
for (var i = 0; i < scratch.Length && !fontRecognizer.IsFinished; i++)
{
fontRecognizer.AddCharacter(scratch.Buffer[i]);
}
textMapping = fontRecognizer.TextMapping;
break;
}
}
break;
}
}
