/// <summary>
/// Adds a namespace declaration to the declarations currently in scope.
/// </summary>
/// <param name="ns">The namespace declaration to add.</param>
private void _addNamespaceDecl(ASNamespace ns)
{
// Check if the namespace is declared by an ancestor.
for (int i = m_nsInScopePtrs[m_nsInScopePtrs.length - 1] - 1; i >= 0; i--)
{
ASNamespace parentNs = m_nsInScope[i];
if (parentNs.prefix != ns.prefix)
{
continue;
}
if (parentNs.uri == ns.uri)
{
return;
}
break;
}
// Check if there is a duplicate declaration on this node.
for (int i = m_nsInScopePtrs[m_nsInScopePtrs.length - 1], n = m_nsInScope.length; i < n; i++)
{
if (ns.prefix == m_nsInScope[i].prefix)
{
throw _error(ErrorCode.MARIANA__XML_PARSER_DUPLICATE_NS_DECL);
}
}
m_nsInScope.add(ns);
}
/// <summary>
/// Creates a new <see cref="ASQName"/> object from a local name. The default namespace will
/// be used.
/// </summary>
/// <param name="localName">The local name of the XML name. This is the name of the XML
/// element or attribute without the namespace. If this is the string "*", the QName will
/// match XML elements and attributes with any name in any namespace. Otherwise, its namespace
/// will be set to the default XML namespace.</param>
public ASQName(string?localName)
{
if (localName != null && localName.Length == 1 && localName[0] == '*')
{
(uri, prefix) = (null, null);
}
else
{
ASNamespace defaultNS = ASNamespace.getDefault();
(uri, prefix) = (defaultNS.uri, defaultNS.prefix);
}
this.localName = ASString.AS_convertString(localName);
}
/// <summary>
/// Reads an attribute.
/// </summary>
private void _readAttribute()
{
int curLine = m_curLine;
if (!_readName(out string?prefix, out string?localName))
{
throw _error(
ErrorCode.MARIANA__XML_PARSER_INVALID_NAME,
(prefix == null) ? localName : prefix + ":" + localName
);
}
if (m_str.Length - m_pos < 2 || m_str[m_pos] != '=')
{
throw _error(ErrorCode.XML_PARSER_UNTERMINATED_ATTR);
}
m_pos++;
string attrValue = _readAttributeValue();
if (prefix == null && localName == "xmlns")
{
_addNamespaceDecl(ASNamespace.unsafeCreate("", attrValue));
}
else if (prefix == "xmlns")
{
if (attrValue.Length == 0)
{
throw ErrorHelper.createError(ErrorCode.XML_ILLEGAL_PREFIX_PUBLIC_NAMESPACE, localName);
}
_addNamespaceDecl(ASNamespace.unsafeCreate(localName, attrValue));
}
else
{
// Attribute nodes canot be created at this point; this is because their prefixes
// can refer to xmlns declarations after it on the same element tag. So they
// must be stored as UnresolvedAttribute until the entire start tag is parsed,
// after which their namespace URIs can be resolved and the attribute nodes created.
m_unresolvedAttrs.add(new UnresolvedAttribute {
lineNumber = curLine,
prefix = prefix,
localName = localName,
value = attrValue,
});
}
}
/// <summary>
/// Checks if the given <see cref="ASQName"/> is a valid node name for an element, attribute
/// or processing instruction. If it is not valid, attempts to create a valid name by removing
/// the namespace prefix from the name, or by substituting a default namespace URI if the
/// name has a null namespace URI.
/// </summary>
///
/// <param name="name">The <see cref="ASQName"/> instance to check.</param>
/// <param name="nodeType">Must be one of <see cref="XMLNodeType.ELEMENT"/>, <see cref="XMLNodeType.ATTRIBUTE"/>
/// or <see cref="XMLNodeType.PROCESSING_INSTRUCTION"/>.</param>
/// <param name="defaultNS">The default namespace to use if the namespace URI of <paramref name="name"/>
/// is null. If this is null, the value of <see cref="ASNamespace.getDefault()"/> is used if
/// <paramref name="nodeType"/> if <see cref="XMLNodeType.ELEMENT"/>, and <see cref="ASNamespace.@public"/>
/// otherwise.</param>
///
/// <returns>If <paramref name="name"/> is a valid name for a node of the given type, returns
/// <paramref name="name"/>; if a new valid name could be created by removing the namespace prefix
/// and/or by substituting a default namespace URI, returns the new name; otherwise, returns null.</returns>
public static ASQName?tryMakeValidNodeName(ASQName?name, XMLNodeType nodeType, ASNamespace?defaultNS = null)
{
if (name == null || !isValidName(name.localName))
{
return(null);
}
switch (nodeType)
{
case XMLNodeType.ELEMENT:
if (name.uri == null)
{
return(new ASQName(defaultNS ?? ASNamespace.getDefault(), name.localName));
}
break;
case XMLNodeType.PROCESSING_INSTRUCTION:
if (name.uri == null || name.uri.Length != 0)
{
return(new ASQName(ASNamespace.@public, name.localName));
}
break;
case XMLNodeType.ATTRIBUTE: {
if (name.uri == null)
{
name = new ASQName(defaultNS ?? ASNamespace.@public, name.localName);
}
else if (name.prefix != null &&
((name.prefix.Length == 0 && name.uri.Length != 0) || name.prefix == "xmlns"))
{
name = ASQName.unsafeCreate(prefix: null, name.uri, name.localName);
}
if (name.uri !.Length == 0 && name.localName == "xmlns")
{
return(null);
}
break;
}
}
return(name);
}
private void _enterElement(ASXML elem)
{
_writeIndent();
ASQName elemName = elem.internalGetName() !;
var stackItem = new TagStackItem {
tempPrefixIdStart = m_nextTempPrefixId,
nsDeclBeginIndex = m_nsInScope.length,
localName = elemName.localName,
prefix = _getPrefix(elemName, isAttr: false)
};
elem.internalGetNamespaceDecls(ref m_nsInScope);
m_parts.add("<");
_writeName(stackItem.prefix, stackItem.localName);
foreach (ASXML attr in elem.getAttributeEnumerator())
{
ASQName attrName = attr.internalGetName() !;
string attrValue = attr.nodeText !;
m_parts.add(" ");
_writeName(_getPrefix(attrName, isAttr: true), attrName.localName);
m_parts.add("=\"");
m_parts.add(XMLHelper.escape(attrValue, 0, attrValue.Length, ref m_escBuffer, isAttr: true));
m_parts.add("\"");
}
// If this is the root we must include the ancestor namespaces as well.
int nsDeclStart = (m_tagStack.length == 0) ? 0 : stackItem.nsDeclBeginIndex;
for (int i = nsDeclStart, n = m_nsInScope.length; i < n; i++)
{
ASNamespace nsDecl = m_nsInScope[i];
if (nsDecl.prefix !.Length != 0)
{
m_parts.add(" xmlns:");
m_parts.add(nsDecl.prefix);
m_parts.add("=\"");
}
private void _init(string str)
{
m_str = str;
m_pos = 0;
m_curLine = 1;
m_defaultNS = ASNamespace.getDefault();
m_parserFlags = 0;
var xmlSettings = ASXML.internalSettings;
if (xmlSettings.ignoreComments)
{
m_parserFlags |= FLAG_IGNORE_COMMENTS;
}
if (xmlSettings.ignoreProcessingInstructions)
{
m_parserFlags |= FLAG_IGNORE_PI;
}
if (xmlSettings.ignoreWhitespace)
{
m_parserFlags |= FLAG_IGNORE_SPACE;
}
m_nsInScope.clear();
m_nsInScopePtrs.clear();
m_parserStack.clear();
m_nodeStack.clear();
m_unresolvedAttrs.clear();
if (m_buffer == null)
{
m_buffer = new char[128];
}
if (m_namePool == null)
{
m_namePool = new NamePool();
}
}
/// <summary>
/// Adds the implicit namespace declarations for the root element for the default
/// namespace and the "xml" namespace, if they are used in the document.
/// </summary>
/// <returns>The namespace declaration array with the implicit declarations added.</returns>
/// <param name="rootNSDecls">The namespace declarations to which to add the implicit
/// declarations.</param>
private ASNamespace[] _addImplicitNSDeclsToRoot(ASNamespace[] rootNSDecls)
{
int nsDeclSize = rootNSDecls.Length;
if ((m_parserFlags & FLAG_USES_XML_NS) != 0)
{
nsDeclSize++;
}
if ((m_parserFlags & FLAG_USES_DEFAULT_NS) != 0)
{
nsDeclSize++;
}
if (nsDeclSize == rootNSDecls.Length)
{
return(rootNSDecls);
}
var newNSDecls = new ASNamespace[nsDeclSize];
int i = 0;
for (; i < rootNSDecls.Length; i++)
{
newNSDecls[i] = rootNSDecls[i];
}
if ((m_parserFlags & FLAG_USES_XML_NS) != 0)
{
newNSDecls[i++] = s_namespaceForXml;
}
if ((m_parserFlags & FLAG_USES_DEFAULT_NS) != 0)
{
newNSDecls[i++] = m_defaultNS;
}
return(newNSDecls);
}
