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make parsing more robust

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git-svn-id: https://public-transport-enabler.googlecode.com/svn/trunk@211 0924bc21-9374-b0fa-ee44-9ff1593b38f0
This commit is contained in:
andreas.schildbach 2010-09-30 14:59:09 +00:00
parent 3cd0bf957d
commit fc703b5711
2 changed files with 73 additions and 9 deletions
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52
src/de/schildbach/pte/util/XmlPullUtil.java
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@ -297,6 +297,58 @@ public final class XmlPullUtil
}
}
public static boolean nextStartTagInsideTree(final XmlPullParser pp, final String tagNamespace, final String tagName)
throws XmlPullParserException, IOException
{
if (tagNamespace == null && tagName == null)
throw new IllegalArgumentException("namespace and name argument can not be both null:" + pp.getPositionDescription());
if (pp.getEventType() != XmlPullParser.START_TAG && pp.getEventType() != XmlPullParser.END_TAG)
throw new IllegalStateException("expected START_TAG of parent or END_TAG of child:" + pp.getPositionDescription());
while (true)
{
final int eventType = pp.next();
if (eventType == XmlPullParser.START_TAG)
{
final String name = pp.getName();
final String namespace = pp.getNamespace();
boolean matches = (tagNamespace != null && tagNamespace.equals(namespace)) || (tagName != null && tagName.equals(name));
if (matches)
return true;
skipSubTree(pp);
pp.require(XmlPullParser.END_TAG, name, namespace);
}
else if (eventType == XmlPullParser.END_TAG)
{
return false;
}
}
}
public static void skipRestOfTree(final XmlPullParser pp) throws XmlPullParserException, IOException
{
if (pp.getEventType() != XmlPullParser.START_TAG && pp.getEventType() != XmlPullParser.END_TAG)
throw new IllegalStateException("expected START_TAG of parent or END_TAG of child:" + pp.getPositionDescription());
while (true)
{
final int eventType = pp.next();
if (eventType == XmlPullParser.START_TAG)
{
skipSubTree(pp);
pp.require(XmlPullParser.END_TAG, null, null);
}
else if (eventType == XmlPullParser.END_TAG)
{
return;
}
}
}
/**
* This method bypasses all events until it finds a start tag that has passed in namespace (if not null) and
* namespace (if not null).