1 files changed, 84 insertions, 0 deletions
diff --git a/tools/lib/xpath.py b/tools/lib/xpath.py
new file mode 100644
index 00000000..07f8e389
--- /dev/null
+++ b/tools/lib/xpath.py
@@ -0,0 +1,84 @@
+
+import re
+
+
+class XPathComponent:
+    regex = r"([^\/^\[]+)(\[([^\]]+)\])?"
+    def __init__(self, expr):
+        matches = re.finditer(XPathComponent.regex, expr, re.DOTALL | re.IGNORECASE)
+        match = next(matches)
+        self.name = match.group(1)
+        tmp = match.group(3) if len(match.groups())>2 else None
+        self.filter = tmp.split(',') if tmp is not None else [] 
+
+    def equals(self, comp, ignoreFilter=False) -> bool:
+        if ignoreFilter:
+            return self.name == comp.name
+        if self.name == comp.name:
+            return set(self.filter) == set(comp.filter)
+        return False
+    
+    def setFilter(self, f, v):
+        self.filter.append('{}={}'.format(f,v))
+
+    def hasFilter(self, propertyName):
+        search=propertyName+'='
+        for filter in self.filter:
+            if filter.startswith(search):
+                return True
+        return False
+
+    def __str__(self) -> str:
+        return "XPathComponent[name={}, filter={}]".format(self.name, self.filter)
+    
+class XPath:
+
+    def __init__(self, expr=None):
+        self.raw = expr
+        tmp = expr.split('/') if expr is not None else []
+        self.components=[]
+        if len(tmp)>0 and len(tmp[0])==0:
+            tmp.pop(0)
+        for x in tmp:
+            self.components.append(XPathComponent(x))
+    
+    def add(self, c: str) -> XPathComponent:
+        xc=XPathComponent(c)
+        self.components.append(xc)
+        return xc
+
+    def remove(self, c: str) -> bool:
+        if self.components[len(self.components)-1].equals(XPathComponent(c), True):
+            self.components.pop()
+            return True
+        return False
+
+    def parentParamIsNeeded(self, xp, paramName) -> bool:
+        for i in range(len(xp.components)):
+            if i>=len(self.components):
+                return False
+            if not self.components[i].equals(xp.components[i], True):
+                return False
+        return self.components[len(xp.components)-1].hasFilter(paramName)
+
+    def equals(self, path, ignoreFilter=False) -> bool:
+        if len(self.components) != len(path.components):
+            return False
+
+        for i in range(len(self.components)):
+            if not self.components[i].equals(path.components[i], ignoreFilter):
+                return False
+        return True
+
+    def lastname(self) -> str:
+        tmp = self.last()
+        return tmp.name if tmp is not None else ""
+
+    def last(self, off=0) -> XPathComponent:
+        return self.components[len(self.components)-1-off] if len(self.components)>off else None
+
+    def subpath(self, off=0):
+        tmp =XPath()
+        for i in range(len(self.components)-off):
+            tmp.components.append(self.components[i])
+        return tmp
+\ No newline at end of file