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landxml_parser.py
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# title: landxml parser
# author: kang taewook
# email: [email protected]
# description: convert landxml to json
#
import os, sys, re, json, math, traceback, pandas as pd, numpy as np, numpy as np
import xml.etree.ElementTree as elemTree
from nltk.tokenize import WhitespaceTokenizer
sys.path.insert(0, os.path.dirname(os.getcwd()))
def import_json(fname):
data = None
with open(fname) as f:
data = json.load(f)
return data
def get_xml_tag_name(tag):
index = tag.find("}")
if index >= 0:
tag = tag[index + 1: len(tag)]
return tag
def get_key_in_dict(dict_data, index):
list = [i for i in dict_data.keys()]
if len(list) <= index:
return None
return list[index]
class XML_parser:
_find = 0
_nodes = []
def clear_finall_node(self):
self._nodes.clear()
def add_findall_node(self, node):
for n in self._nodes:
if n == node:
return
self._nodes.append(node)
return
def is_match_attrib(self, node, attr):
i = 0
for key in attr:
try:
# print("cond: " + key)
value = attr[key]
if node.attrib[key].find(value) >= 0:
continue
return False
except:
return False
i = i + 1
print("* matched. " + str(node.attrib))
return True
def findall(self, node, tag, attr = ""):
#tag_cond = {'base_tag': 'CrossSect', 'name': "0+040.00"}
for child in node:
try:
if child.tag.find(tag) >= 0:
# print(str(find) + ".tag: " + child.tag + ": " + str(child.attrib))
if self.is_match_attrib(child, attr):
self.add_findall_node(child)
return child
except ValueError:
pass
result = self.findall(child, tag, attr)
if result != None:
self.add_findall_node(child)
return result
self._find = self._find + 1
return None
class landxml:
_model_data = None
def __init__(slef):
pass
def load(self, fpath):
try:
tree = elemTree.parse(fpath)
root = tree.getroot()
model = self.parsing(root)
self._model_data = model
return model
except Exception as e:
traceback.print_exc()
pass
return None
def save(self, fpath):
try:
if self._model_data == None:
return
with open(fpath, 'w') as json_file:
json.dump(self._model_data, json_file, indent = 2)
except Exception as e:
traceback.print_exc()
pass
def get_points_in_text(self, text):
tk = WhitespaceTokenizer()
tokens = tk.tokenize(text)
pcd = []
i = 0
count = round(len(tokens) / 2)
for i in range(count):
x = float(tokens[i * 2])
y = float(tokens[i * 2 + 1])
pcd.append((x, y))
return pcd
def get_attrib_text(self, node):
tag = get_xml_tag_name(node.tag)
print(tag, node.attrib)
data = {}
data[tag] = {}
data[tag]['attrib'] = node.attrib
if node.text == None:
data[tag]['text'] = ""
else:
data[tag]['text'] = node.text.replace('\t', '')
data[tag]['text'] = data[tag]['text'].replace('\n', '')
data[tag]['list'] = []
return tag, node.attrib, node.text, data
def parsing_curve(self, node, model):
for child in node:
tag, attrib, text, data = self.get_attrib_text(child)
if text != None:
data[tag]['points'] = self.get_points_in_text(text)
model.append(data)
if tag.find("Start") >= 0:
pass
elif tag.find("Center") >= 0:
pass
elif tag.find("End") >= 0:
pass
elif tag.find("PI") >= 0:
pass
return model
def parsing_curve_set(self, node, model):
for child in node:
tag, attrib, text, data = self.get_attrib_text(child)
if child.tag.find("Line") >= 0 or child.tag.find("Curve") >= 0:
model.append(data)
self.parsing_curve(child, data[tag]['list'])
return model
def parsing_cross_sect_surf(self, node, model):
for child in node:
tag, attrib, text, data = self.get_attrib_text(child)
if child.tag.find("PntList2D") < 0:
continue
data[tag]['points'] = self.get_points_in_text(text)
model.append(data)
return model
def parsing_design_cross_sect_surf(self, node, model):
for child in node:
tag, attrib, text, data = self.get_attrib_text(child)
if child.tag.find("CrossSectPnt") < 0:
continue
data[tag]['points'] = self.get_points_in_text(text) # TBD
model.append(data)
return model
def parsing_cross_sect(self, node, model):
for child in node:
tag, attrib, text, data = self.get_attrib_text(child)
if child.tag.find("DesignCrossSectSurf") >= 0:
model.append(data)
self.parsing_design_cross_sect_surf(child, data[tag]['list'])
elif child.tag.find("CrossSectSurf") >= 0:
model.append(data)
self.parsing_cross_sect_surf(child, data[tag]['list'])
return model
def parsing_cross_sects(self, node, model):
for child in node:
tag, attrib, text, data = self.get_attrib_text(child)
if child.tag.find("CrossSect") >= 0:
model.append(data)
self.parsing_cross_sect(child, data[tag]['list'])
return model
def parsing_prof_surf(self, node, model):
for child in node:
tag, attrib, text, data = self.get_attrib_text(child)
if child.tag.find("PntList2D") >= 0:
data[tag]['points'] = self.get_points_in_text(text)
model.append(data)
return model
def parsing_prof_align(self, node, model):
for child in node:
tag, attrib, text, data = self.get_attrib_text(child)
if child.tag.find("PVI") >= 0:
data[tag]['points'] = self.get_points_in_text(text)
model.append(data)
elif child.tag.find("ParaCurve") >= 0:
data[tag]['points'] = self.get_points_in_text(text)
model.append(data)
return model
def parsing_profile(self, node, model):
for child in node:
tag, attrib, text, data = self.get_attrib_text(child)
if child.tag.find("ProfSurf") >= 0:
model.append(data)
self.parsing_prof_surf(child, data[tag]['list'])
elif child.tag.find("ProfAlign") >= 0:
model.append(data)
self.parsing_prof_align(child, data[tag]['list'])
return model
def parsing_coordgeom(self, node, model):
for child in node:
tag, attrib, text, data = self.get_attrib_text(child)
if tag.find("CoordGeom") >= 0:
model.append(data)
self.parsing_curve_set(child, data[tag]['list'])
elif tag.find("CrossSects") >= 0:
model.append(data)
self.parsing_cross_sects(child, data[tag]['list'])
elif tag.find("Profile") >= 0:
model.append(data)
self.parsing_profile(child, data[tag]['list'])
return model
def parsing_alignment(self, node, model):
for child in node:
tag, attrib, text, data = self.get_attrib_text(child)
if tag.find("Alignment") >= 0:
model.append(data)
self.parsing_coordgeom(child, data[tag]['list'])
return model
def parsing(self, node):
model = []
try:
for child in node:
tag, attrib, text, data = self.get_attrib_text(child)
if tag.find("Project") >= 0:
pass
elif tag.find("Units") >= 0:
pass
elif tag.find("Application") >= 0:
pass
elif tag.find("Alignments") >= 0:
model.append(data)
self.parsing_alignment(child, data[tag]['list'])
elif tag.find("Roadways") >= 0:
pass
elif tag.find("Surfaces") >= 0:
pass
except Exception as e:
traceback.print_exc()
pass
return model
def test():
lxml = landxml()
model = lxml.load('sample.xml')
print(model)
lxml.save('output.json')
if __name__ == "__main__":
test()