public bool parse(ref char[] buffer, int count, ref MarkupNode rootNode)
{
if (buffer == null || count < 0 || count > buffer.Count())
{
throw new Exception("缓存为空或者索引越界");
}
if (count == 0)
{
return(false);
}
{
int curIdx = 0;
Stack <MarkupNode> stackNode = new Stack <MarkupNode>();
MarkupNode newNode = null;
stackNode.Push(rootNode);
while (stackNode.Count() > 0)
{
MarkupNode curNode = stackNode.Peek();
{
// 解析结束标签
curIdx = skipWhiteSpace(ref buffer, curIdx);
if (buffer[curIdx] == (char)0)
{
return(true);
}
if (buffer[curIdx] == '<' && buffer[curIdx + 1] == '/')
{
// 找到结点结束标签，栈顶结点出栈
curNode = stackNode.Pop();
curIdx += 2;
string nodeName = "";
curIdx = parseIdentifier(ref buffer, curIdx, out nodeName);
if (curNode.getName() != nodeName)
{
throw new Exception("结束标签名称不匹配");
}
if (buffer[curIdx] != '>')
{
throw new Exception("结束标签名称不匹配");
}
curIdx += 1;
curIdx = skipWhiteSpace(ref buffer, curIdx);
continue;
}
}
{
// 解析开始标志
curIdx = skipWhiteSpace(ref buffer, curIdx);
if (buffer[curIdx] == (char)0)
{
return(true);
}
if (buffer[curIdx] != '<')
{
throw new Exception("找不到开始标签 <");
}
curIdx++;
}
{
// 过滤注释
int lastIdx = curIdx;
curIdx = skipComment(ref buffer, curIdx);
if (lastIdx != curIdx)
{
curIdx = skipWhiteSpace(ref buffer, curIdx);
continue;
}
}
{
// 解析节点名字
curIdx = skipWhiteSpace(ref buffer, curIdx);
if (newNode == null)
{
string nodeName = "";
curIdx = parseIdentifier(ref buffer, curIdx, out nodeName);
if (buffer[curIdx] == (char)0)
{
throw new Exception("无法解析节点名字");
}
curNode.setName(nodeName);
newNode = curNode;
}
else
{
string nodeName = "";
curIdx = parseIdentifier(ref buffer, curIdx, out nodeName);
if (buffer[curIdx] == (char)0)
{
throw new Exception("无法解析节点名字");
}
newNode = new MarkupNode(curNode);
newNode.setName(nodeName);
stackNode.Push(newNode);
curNode = newNode;
}
}
{
// 解析节点属性值
bool result = parseAttributes(ref buffer, ref curIdx, ref curNode);
if (result == false)
{
return(false);
}
// 解析节点结束标签
curIdx = skipWhiteSpace(ref buffer, curIdx);
if (buffer[curIdx] == '/' && buffer[curIdx + 1] == '>')
{
curIdx += 2;
stackNode.Pop();
}
else
{
// 解析节点关闭标签
if (buffer[curIdx] != '>')
{
throw new Exception("找不到关闭标签 >");
}
{
// 解析节点值
curIdx++;
string value = "";
bool parseResult = parseData(ref buffer, ref curIdx, '<', out value);
if (parseResult == false)
{
return(false);
}
if (isWhiteSpace(value))
{
value = "";
}
curNode.setValue(value);
}
{
if (buffer[curIdx] == (char)0)
{
return(true);
}
if (buffer[curIdx] != '<')
{
throw new Exception("找不到子节点开始标签 <");
}
}
}
}
}
stackNode.Clear();
stackNode = null;
}
return(true);
}
