/*
* Consume zero or more XMLTokens up to and including the corresponding
* end XML element or EOF.
*/
void
XMLInputStream::skipPastEnd (const XMLToken& element)
{
if ( element.isEnd() ) return;
while ( isGood() && !peek().isEndFor(element) ) next();
next();
}
unsigned int
XMLTokenizer::determineNumSpecificChildren(bool & valid,
const std::string& qualifier,
const std::string& container)
{
valid = false;
unsigned int numQualifiers = 0;
size_t size = mTokens.size();
if (size < 2)
{
return numQualifiers;
}
unsigned int depth = 0;
unsigned int index = 0;
std::string name;
std::string prevName = "";
std::string rogueTag = "";
XMLToken next = mTokens.at(index);
name = next.getName();
if (next.isStart() == true && next.isEnd() == true &&
name == qualifier && index < size)
{
numQualifiers++;
index++;
next = mTokens.at(index);
}
bool cleanBreak = false;
while (index < size-2)
{
// skip any text elements
while(next.isText() == true && index < size-1)
{
index++;
next = mTokens.at(index);
}
if (next.isEnd() == true)
{
if (next.getName() == container)
{
valid = true;
break;
}
//else if (!rogueTag.empty() && next.getName() == rogueTag)
//{
// index++;
// next = mTokens.at(index);
// break;
//}
}
// iterate to first start element
while (next.isStart() == false && index < size-1)
{
index++;
next = mTokens.at(index);
}
if (next.isStart() == true && next.isEnd() == true)
{
if (qualifier.empty() == true)
{
// if we are not looking for a specifc element then
// we may have a child that is a start and end
// such as <true/>
numQualifiers++;
}
index++;
if (index < size)
{
next = mTokens.at(index);
continue;
}
}
// check we have not reached the end
// this would be a bad place if we have so set num children to zero
if (index == size)
{
numQualifiers = 0;
break;
}
// record the name of the start element
name = next.getName();
// need to deal with the weird situation where someone has used a tag
// after the piece but before the next correct element
//if (container == "piecewise")
//{
// if (prevName == "piece")
// {
// if (name != "piece" && name != "otherwise")
// {
// rogueTag = name;
// index++;
// next = mTokens.at(index);
// continue;
// }
// }
//}
if (qualifier.empty() == true || name == qualifier)
{
numQualifiers++;
}
// index++;
// check we have not reached the end
if (index+1 == size)
{
numQualifiers = 0;
break;
}
else
{
index++;
next = mTokens.at(index);
}
// iterate to the end of </name>
// checking that we have not got a nested element <name></name>
cleanBreak = false;
while (index < size-1)
{
if (next.isStart() == true && next.getName() == name)
{
depth++;
}
if (next.isEnd() == true && next.getName() == name)
{
if (depth == 0)
{
cleanBreak = true;
break;
}
else
{
depth--;
}
}
index++;
if (index < size)
{
next = mTokens.at(index);
}
}
prevName = name;
index++;
if (index < size)
{
next = mTokens.at(index);
}
}
// we might have hit the end of the loop and the end of the correct tag
if (valid == false && cleanBreak == true)
{
if (index >= size-2 && next.isEnd() == true && next.getName() == container)
{
valid = true;
}
}
return numQualifiers;
}
unsigned int
XMLTokenizer::determineNumberChildren(bool & valid, const std::string element)
{
valid = false;
unsigned int numChildren = 0;
std::string closingTag = element;
bool forcedElement = true;
if (closingTag.empty() == true)
{
closingTag = "apply";
forcedElement = false;
}
// if there is only one token there cannot be any children
size_t size = mTokens.size();
if (size < 2)
{
return numChildren;
}
// we assume that the first unread token is a
// function and that at some point in the
// list of tokens we will hit the end of the
// element for that function
// need to count the number of starts
unsigned int index = 0;
XMLToken firstUnread = mTokens.at(index);
while (firstUnread.isText() && index < size - 1)
{
// skip any text
index++;
firstUnread = mTokens.at(index);
}
// if we have an apply the firstToken should be a function
// that is both a start and an end
// unless we are reading a user function
// or a csymbol
// if the tag is not a start and an end this is an error
// we want to exit
// but be happy that the read is ok
// and the error gets logged elsewhere
if (closingTag == "apply")
{
std::string firstName = firstUnread.getName();
if (firstName != "ci" && firstName != "csymbol")
{
if (firstUnread.isStart() != true
|| (firstUnread.isStart() == true && firstUnread.isEnd() != true))
{
valid = true;
return numChildren;
}
}
}
index = 1;
if (forcedElement == true)
{
index = 0;
}
unsigned int depth = 0;
std::string name;
bool cleanBreak = false;
XMLToken next = mTokens.at(index);
while (index < size-2)
{
// skip any text elements
while(next.isText() == true && index < size-1)
{
index++;
next = mTokens.at(index);
}
if (next.isEnd() == true && next.getName() == closingTag)
{
valid = true;
break;
}
// iterate to first start element
while (next.isStart() == false && index < size-1)
{
index++;
next = mTokens.at(index);
}
// check we have not reached the end
// this would be a bad place if we have so set num children to zero
if (index == size)
{
numChildren = 0;
break;
}
// record the name of the start element
name = next.getName();
numChildren++;
// index++;
// check we have not reached the end
if (index + 1 == size)
{
numChildren = 0;
break;
}
else if (next.isEnd() == false)
{
index++;
if (index < size)
{
next = mTokens.at(index);
}
else
{
break;
}
}
// iterate to the end of </name>
// checking that we have not got a nested element <name></name>
cleanBreak = false;
while (index < size-1)
{
if (next.isStart() == true && next.isEnd() == false && next.getName() == name)
{
depth++;
}
if (next.isEnd() == true && next.getName() == name)
{
if (depth == 0)
{
cleanBreak = true;
break;
}
else
{
depth--;
}
}
index++;
next = mTokens.at(index);
}
index++;
if (index < size)
{
next = mTokens.at(index);
}
}
// we might have hit the end of the loop and the end of the correct tag
// but the loop hits before it can record that it was valid
if (valid == false && cleanBreak == true)
{
if (index >= size-2 && next.isEnd() == true && next.getName() == closingTag)
{
valid = true;
}
}
return numChildren;
}