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/*
* DOMParser.cpp
*****************************************************************************
* Copyright (C) 2012, bitmovin Softwareentwicklung OG, All Rights Reserved
*
* Email: libdash-dev@vicky.bitmovin.net
*
* This source code and its use and distribution, is subject to the terms
* and conditions of the applicable license agreement.
*****************************************************************************/
#include "DOMParser.h"
using namespace dash::xml;
using namespace dash::helpers;
DOMParser::DOMParser (std::string url) :
url (url),
reader (NULL),
root (NULL)
{
this->Init();
}
DOMParser::~DOMParser ()
{
xmlCleanupParser();
delete(this->root);
}
Node* DOMParser::GetRootNode () const
{
return this->root;
}
bool DOMParser::Parse (std::string path)
{
this->reader = xmlReaderForFile(this->url.c_str(), NULL, 0);
if(this->reader == NULL)
return false;
if(xmlTextReaderRead(this->reader))
this->root = this->ProcessNode(path);
xmlFreeTextReader(this->reader);
if(this->root == NULL)
return false;
return true;
}
Node* DOMParser::ProcessNode (std::string path)
{
int type = xmlTextReaderNodeType(this->reader);
if(type != WhiteSpace && type != Text)
{
while (type == Comment || type == WhiteSpace)
{
xmlTextReaderRead(this->reader);
type = xmlTextReaderNodeType(this->reader);
}
Node *node = new Node();
node->SetType(type);
if(!(strcmp("",path.c_str())))
node->SetMPDPath(Path::GetDirectoryPath(url));
else
node->SetMPDPath(Path::GetDirectoryPath(path));
if(xmlTextReaderConstName(this->reader) == NULL)
{
delete node;
return NULL;
}
std::string name = (const char *) xmlTextReaderConstName(this->reader);
int isEmpty = xmlTextReaderIsEmptyElement(this->reader);
node->SetName(name);
this->AddAttributesToNode(node);
if(isEmpty)
return node;
Node *subnode = NULL;
int ret = xmlTextReaderRead(this->reader);
while(ret == 1)
{
if(!strcmp(name.c_str(), (const char *) xmlTextReaderConstName(this->reader)))
{
return node;
}
subnode = this->ProcessNode(path);
if(subnode != NULL)
node->AddSubNode(subnode);
ret = xmlTextReaderRead(this->reader);
}
return node;
} else if (type == Text)
{
const char* text = (const char *) xmlTextReaderReadString(this->reader);
if(text != NULL)
{
Node *node = new Node();
node->SetType(type);
node->SetText(text);
delete text;
return node;
}
}
return NULL;
}
void DOMParser::AddAttributesToNode (Node *node)
{
if(xmlTextReaderHasAttributes(this->reader))
{
while(xmlTextReaderMoveToNextAttribute(this->reader))
{
std::string key = (const char *) xmlTextReaderConstName(this->reader);
std::string value = (const char *) xmlTextReaderConstValue(this->reader);
node->AddAttribute(key, value);
}
}
}
void DOMParser::Print (Node *node, int offset)
{
std::stringstream ss;
for(int i = 0; i < offset; i++)
ss << " ";
ss << node->GetName();
std::vector<std::string> keys = node->GetAttributeKeys();
ss.clear();
for(unsigned int i = 0; i < keys.size(); i++)
{
ss << " " << keys.at(i) << "=" << node->GetAttributeValue(keys.at(i));
}
offset++;
for(unsigned int i = 0; i < node->GetSubNodes().size(); i++)
{
this->Print(node->GetSubNodes().at(i), offset);
}
}
void DOMParser::Init ()
{
this->root = NULL;
this->reader = NULL;
}
void DOMParser::Print ()
{
this->Print(this->root, 0);
}
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