public EpubSummaryParser(Stream source)
{
_zip = ZipContainer.Unzip(source);
XDocument xmlDocument = _zip.GetFileStream("META-INF/container.xml").GetXmlDocument();
XElement root = xmlDocument.Root;
if (root == null)
throw new DataException(InvalidEpubMetaInfo);
XAttribute attribute = root.Attribute("xmlns");
XNamespace xmlns = (attribute != null) ? XNamespace.Get(attribute.Value) : XNamespace.None;
XAttribute fullPath = xmlDocument.Descendants(xmlns + "rootfile").First().Attribute("full-path");
if (fullPath == null)
throw new DataException(InvalidEpubMetaInfo);
string path = fullPath.Value;
_opfPath = path;
_opf = _zip.GetFileStream(path).GetXmlDocument();
_opfRoot = _opf.Root;
if (_opfRoot == null)
throw new DataException(InvalidEpubMetaInfo);
_oebps = GetPath(path);
_opfns = XNamespace.Get("http://www.idpf.org/2007/opf");
_opfdc = XNamespace.Get("http://purl.org/dc/elements/1.1/");
_coverHelper = new EpubCoverHelper(_zip, _opfns, _opfRoot, _oebps);
}
private void ParseAnchors(TokenIndex top, EpubPath path, HtmlNode node)
{
foreach (string str in new[] { "id", "name" })
{
string attributeValue = node.GetAttributeValue(str, string.Empty);
if (!string.IsNullOrEmpty(attributeValue))
{
AddAnchor(top, path.CurrentFilePath + "#" + attributeValue);
}
}
}
public EpubTokenParser(XDocument opf, EpubPath opfPath, ZipContainer zip, CSS css, Dictionary<string, int> anchors)
{
_opf = opf;
_opfPath = opfPath;
_zip = zip;
_css = css;
_anchors = anchors;
_opfns = XNamespace.Get("http://www.idpf.org/2007/opf");
_opfRoot = _opf.Root;
if (_opfRoot == null)
throw new DataException("Invalid epub meta info.");
}
public EpubTokenParser(XDocument opf, EpubPath opfPath, ZipContainer zip, CSS css, Dictionary <string, int> anchors)
{
_opf = opf;
_opfPath = opfPath;
_zip = zip;
_css = css;
_anchors = anchors;
_opfns = XNamespace.Get("http://www.idpf.org/2007/opf");
_opfRoot = _opf.Root;
if (_opfRoot == null)
{
throw new DataException("Invalid epub meta info.");
}
}
public EpubSummaryParser(Stream source)
{
_zip = ZipContainer.Unzip(source);
XDocument xmlDocument = _zip.GetFileStream("META-INF/container.xml").GetXmlDocument();
XElement root = xmlDocument.Root;
if (root == null)
{
throw new DataException(InvalidEpubMetaInfo);
}
XAttribute attribute = root.Attribute("xmlns");
XNamespace xmlns = (attribute != null) ? XNamespace.Get(attribute.Value) : XNamespace.None;
XAttribute fullPath = xmlDocument.Descendants(xmlns + "rootfile").First().Attribute("full-path");
if (fullPath == null)
{
throw new DataException(InvalidEpubMetaInfo);
}
string path = fullPath.Value;
_opfPath = path;
_opf = _zip.GetFileStream(path).GetXmlDocument();
_opfRoot = _opf.Root;
if (_opfRoot == null)
{
throw new DataException(InvalidEpubMetaInfo);
}
_oebps = GetPath(path);
_opfns = XNamespace.Get("http://www.idpf.org/2007/opf");
_opfdc = XNamespace.Get("http://purl.org/dc/elements/1.1/");
_coverHelper = new EpubCoverHelper(_zip, _opfns, _opfRoot, _oebps);
}
private void ParseItems(XElement root, int level, XNamespace ns, EpubPath path)
{
foreach (XElement navPoint in root.Elements(ns + "navPoint"))
{
XElement text = navPoint.Elements(ns + "navLabel").Elements(ns + "text").FirstOrDefault();
if (text == null)
{
continue;
}
XAttribute srcAttr = navPoint.Elements(ns + "content").Attributes("src").FirstOrDefault();
if (srcAttr == null)
{
continue;
}
string cleanSource = srcAttr.Value;
int length = srcAttr.Value.IndexOf("#", StringComparison.Ordinal);
length = length > -1 ? length : cleanSource.Length;
cleanSource = cleanSource.Substring(0, length);
string key = path + cleanSource;
if (Anchors.ContainsKey(key))
{
int num = Anchors[key];
var item = new BookChapter
{
Level = level,
Title = CleanText(text.Value),
TokenID = num
};
Chapters.Add(item);
ParseItems(navPoint, level + 1, ns, path);
}
}
}
private IEnumerable <TokenBase> ParseNodes(HtmlNode container, Stack <TextVisualProperties> propertiesStack, TokenIndex top, EpubPath path, int parentID = -1)
{
foreach (HtmlNode child in container.ChildNodes)
{
var asText = child as HtmlTextNode;
if (asText != null && !string.IsNullOrEmpty(asText.Text))
{
foreach (TokenBase text in ParseText(asText.Text, top))
{
yield return(text);
}
}
else
{
TextVisualProperties properties = propertiesStack.Peek().Clone().Update(child, _css);
properties.LinkID = string.Empty;
if (child.Name == "a" || child.Name == "span")
{
ParseAnchors(top, path, child);
}
if (child.Name == "a")
{
string href = child.GetAttributeValue("href", string.Empty);
if (!string.IsNullOrEmpty(href))
{
if (href.StartsWith("#"))
{
properties.LinkID = path.CurrentFilePath + href;
}
else
{
properties.LinkID = path + href;
}
}
}
if (string.Equals(child.Name, "img"))
{
HtmlAttributeCollection attributes = child.Attributes;
string src = attributes.Contains("src") ? attributes["src"].Value : string.Empty;
var pictureToken = new PictureToken(top.Index++, (path) + src);
yield return(pictureToken);
}
else
{
if (child is HtmlCommentNode)
{
continue;
}
var tagOpenToken = new TagOpenToken(top.Index++, child, properties, parentID);
yield return(tagOpenToken);
propertiesStack.Push(properties);
foreach (TokenBase token in ParseNodes(child, propertiesStack, top, path, tagOpenToken.ID))
{
yield return(token);
}
propertiesStack.Pop();
yield return(new TagCloseToken(top.Index++, parentID));
}
}
}
}
private void ParseItems(XElement root, int level, XNamespace ns, EpubPath path)
{
foreach (XElement navPoint in root.Elements(ns + "navPoint"))
{
XElement text = navPoint.Elements(ns + "navLabel").Elements(ns + "text").FirstOrDefault();
if (text == null)
continue;
XAttribute srcAttr = navPoint.Elements(ns + "content").Attributes("src").FirstOrDefault();
if (srcAttr == null)
continue;
string cleanSource = srcAttr.Value;
int length = srcAttr.Value.IndexOf("#", StringComparison.Ordinal);
length = length > -1 ? length : cleanSource.Length;
cleanSource = cleanSource.Substring(0, length);
string key = path + cleanSource;
if (Anchors.ContainsKey(key))
{
int num = Anchors[key];
var item = new BookChapter
{
Level = level,
Title = CleanText(text.Value),
TokenID = num
};
Chapters.Add(item);
ParseItems(navPoint, level + 1, ns, path);
}
}
}
private IEnumerable<TokenBase> ParseNodes(HtmlNode container, Stack<TextVisualProperties> propertiesStack, TokenIndex top, EpubPath path, int parentID = -1)
{
foreach (HtmlNode child in container.ChildNodes)
{
var asText = child as HtmlTextNode;
if (asText != null && !string.IsNullOrEmpty(asText.Text))
{
foreach (TokenBase text in ParseText(asText.Text, top))
{
yield return text;
}
}
else
{
TextVisualProperties properties = propertiesStack.Peek().Clone().Update(child, _css);
properties.LinkID = string.Empty;
if (child.Name == "a" || child.Name == "span")
{
ParseAnchors(top, path, child);
}
if (child.Name == "a")
{
string href = child.GetAttributeValue("href", string.Empty);
if (!string.IsNullOrEmpty(href))
{
if (href.StartsWith("#"))
{
properties.LinkID = path.CurrentFilePath + href;
}
else
{
properties.LinkID = path + href;
}
}
}
if (string.Equals(child.Name, "img"))
{
HtmlAttributeCollection attributes = child.Attributes;
string src = attributes.Contains("src") ? attributes["src"].Value : string.Empty;
var pictureToken = new PictureToken(top.Index++, (path) + src);
yield return pictureToken;
}
else
{
if(child is HtmlCommentNode)
continue;
var tagOpenToken = new TagOpenToken(top.Index++, child, properties, parentID);
yield return tagOpenToken;
propertiesStack.Push(properties);
foreach (TokenBase token in ParseNodes(child, propertiesStack, top, path, tagOpenToken.ID))
{
yield return token;
}
propertiesStack.Pop();
yield return new TagCloseToken(top.Index++, parentID);
}
}
}
}
private void ParseAnchors(TokenIndex top, EpubPath path, HtmlNode node)
{
foreach (string str in new[] {"id", "name"})
{
string attributeValue = node.GetAttributeValue(str, string.Empty);
if (!string.IsNullOrEmpty(attributeValue))
{
AddAnchor(top, path.CurrentFilePath + "#" + attributeValue);
}
}
}