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#!/usr/bin/python3
import argparse
import os
import re
import urllib.request
import sys
import xml.etree.ElementTree
import jinja2
# Cache for downloaded Docbook documents
documents = {}
def main():
parser = argparse.ArgumentParser("Generate registry files")
parser.add_argument(
"root", nargs="?",
default="http://dicom.nema.org/medical/dicom/current/source/docbook",
help="Root URL or path to the Docbook version of the DICOM standard")
arguments = parser.parse_args()
jinja_environment = jinja2.Environment(
loader=jinja2.FileSystemLoader(os.path.dirname(__file__)),
trim_blocks=True)
sources = [
("part07/part07.xml", "table_E.1-1"),
("part06/part06.xml", "table_7-1"),
("part06/part06.xml", "table_8-1"),
("part06/part06.xml", "table_6-1"),
]
elements_dictionary = {}
for url, id_ in sources:
url = os.path.join(arguments.root, url)
entries = parse_elements_dictionaries(url, id_)
for group, group_entries in entries.items():
elements_dictionary.setdefault(group, []).extend(group_entries)
sources = [
("part06/part06.xml", "table_A-1"),
]
uids = []
for url, id_ in sources:
uids.extend(parse_uids(os.path.join(arguments.root, url), id_))
group_templates = {
"src/odil/registry_{}.h": jinja_environment.get_template("registry_group.h.tmpl"),
"src/odil/registry_{}.cpp": jinja_environment.get_template("registry_group.cpp.tmpl"),
}
for group, group_items in elements_dictionary.items():
for path, template in group_templates.items():
suffix = "{:04x}".format(group) if group != "misc" else group
with open(path.format(suffix), "w") as fd:
fd.write(template.render(
elements_dictionary=group_items, group=suffix))
main_templates = {
"src/odil/registry.h": jinja_environment.get_template("registry.h.tmpl"),
"src/odil/registry.cpp": jinja_environment.get_template("registry.cpp.tmpl"),
}
groups = [
"{:04x}".format(x) if x != "misc" else x for x in elements_dictionary.keys()]
for path, template in main_templates.items():
with open(path, "w") as fd:
fd.write(template.render(uids=uids, groups=groups))
def get_document(url):
if url not in documents:
print("Downloading {}".format(url))
fd = urllib.request.urlopen(url)
documents[url] = xml.etree.ElementTree.parse(fd)
fd.close()
return documents[url]
def parse_elements_dictionaries(url, id_):
document = get_document(url)
namespaces = {
"xml": "http://www.w3.org/XML/1998/namespace",
"docbook": "http://docbook.org/ns/docbook"
}
table = document.find(".//*[@xml:id=\"{}\"]".format(id_), namespaces)
entries = {}
for row in table.iterfind("./docbook:tbody/docbook:tr", namespaces):
entry = row.findall("./docbook:td/docbook:para", namespaces)
tag, name, keyword, vr, vm = entry[:5]
if len(tag):
tag = tag.find("./docbook:emphasis", namespaces)
tag = tag.text
converters = [
(
r"\(([0-9a-fA-F]{4}),([0-9a-fA-F]{4})\)",
lambda x,y: (int(x, 16), int(y, 16))
),
(
r"\(([0-9a-fA-Fx]{4}),([0-9a-fA-Fx]{4})\)",
lambda x,y: str(x+y)
)
]
for expression, converter in converters:
match = re.match(expression, tag)
if match:
tag = converter(*match.groups())
break
keyword = get_value(keyword, "ascii", namespaces)
if not keyword:
continue
name = get_value(name, "utf-8", namespaces)
vr = get_value(vr, "ascii", namespaces)
vm = get_value(vm, "ascii", namespaces)
if isinstance(tag, tuple):
group = tag[0]
elif isinstance(tag, str):
group = "misc"
else:
raise NotImplementedError("Unknown tag type: ".format(type(tag)))
entries.setdefault(group, []).append((tag, name, keyword, vr, vm))
return entries
def parse_uids(url, id_):
document = get_document(url)
namespaces = {
"xml": "http://www.w3.org/XML/1998/namespace",
"docbook": "http://docbook.org/ns/docbook"
}
table = document.find(".//*[@xml:id=\"{}\"]".format(id_), namespaces)
keywords_map = {
"12leadECGWaveformStorage": "TwelveleadECGWaveformStorage",
}
old_keywords_map = {
"Verification": "VerificationSOPClass",
}
entries = []
keywords = set()
for row in table.iterfind("./docbook:tbody/docbook:tr", namespaces):
entry = row.findall("./docbook:td/docbook:para", namespaces)
uid, name, keyword, type_ = entry[:4]
uid = get_value(uid, "ascii", namespaces)
name = get_value(name, "ascii", namespaces)
keyword = get_value(keyword, "ascii", namespaces)
type_ = get_value(type_, "ascii", namespaces)
if name == "(Retired)":
continue
keyword = keywords_map.get(keyword, keyword)
entries.append((uid, name, keyword, type_))
keywords.add(keyword)
retired = name.endswith(" (Retired)")
old_keyword = name.replace(" (Retired)", "")
old_keyword = re.sub(":.*", "", old_keyword)
old_keyword = re.sub("\W", " ", old_keyword).strip().replace(" ", "")
old_keywords_map.get(old_keyword, old_keyword)
if retired:
old_keyword += "_Retired"
if old_keyword not in keywords and old_keyword not in keywords_map:
entries.append((uid, name, old_keyword, type_))
return entries
def get_value(element, encoding, namespaces):
emphasis = element.find("./docbook:emphasis", namespaces)
if emphasis is not None:
element = emphasis
element = element.text or ""
element = element.replace(u"\u200b", "").replace(u"\u00b5", "u")
return element.strip()
if __name__ == "__main__":
sys.exit(main())
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