python-schdoc/parse.py

105 lines
3.6 KiB
Python

import argparse, textwrap
import olefile
import re
import json
import copy
def parse(input, format, **kwargs):
fullPath = input
blah = olefile.OleFileIO(fullPath)
stream = blah.openstream('FileHeader')
# split binary stream into lines using a repeated 5 byte signature
pattern = re.compile(b'.{3}\x00\x00\|')
lines = pattern.split(stream.read()[5:-1]) # lopping off first 4 bytes, and last byte, since they don't seem to matter?
schematic = {}
datums = []
# loop through every "line" and parse each into a dictionary
for line in lines:
datum = {}
pairs = line.split(b"|")
for pair in pairs:
data = pair.split(b"=")
datum[data[0].decode()] = data[1].decode()
datums.append(datum)
# separate out the header dictionary from the "records" dictionaries
schematic["header"] = [x for x in datums if 'HEADER' in x.keys()]
schematic["records"] = [x for x in datums if 'RECORD' in x.keys()]
hierarchy_schematic = determine_hierarchy(schematic)
if format == 'all-hierarchy':
schematic = hierarchy_schematic
elif format == 'parts-list':
schematic = determine_parts_list(hierarchy_schematic)
elif format == 'net-list':
schematic = determine_net_list(hierarchy_schematic)
return schematic
def determine_hierarchy(schematic):
# prep a scratchpad copy of records to build hierarchy from
records_copy = copy.deepcopy(schematic["records"])
schematic["hierarchy"] = []
# loop through all "records" and organize them into owner/children
for i, current in enumerate(records_copy):
current['index'] = i
s = current.get("OWNERINDEX")
if (s is None):
schematic["hierarchy"].append(current)
else:
ownerIndex = int(s)
owner = records_copy[ownerIndex]
if (owner.get("children") == None):
owner["children"] = []
owner["children"].append(current)
schematic["records"] = schematic["hierarchy"]
schematic.pop("hierarchy", None)
return schematic
def determine_parts_list(schematic):
parts_list = {
"records": [ record for record in schematic["records"] if record["RECORD"] is "1" ]
}
return parts_list
def determine_net_list(schematic):
print('NOT IMPLEMENTED')
return schematic
def main(args):
schematic = parse(**vars(args))
if args.output:
json_file = open(args.output, 'w')
json.dump(schematic, json_file, indent=4)
else:
print(schematic)
if __name__ == "__main__":
parser = argparse.ArgumentParser(description='Converts Altium .SchDoc files into json.', formatter_class=argparse.RawTextHelpFormatter)
parser.add_argument('input',
help='path/to/altiumschematic.schdoc file to parse')
parser.add_argument('-o', '--output', dest='output',
help='path/to/jsonfile.json file to output json to, otherwise prints to terminal')
parser.add_argument('-f', '--format', dest='format', default='all-hierarchy',
choices=['all-list', 'all-hierarchy', 'parts-list', 'net-list'],
help=textwrap.dedent('''\
all-list: All records in a flattened list
all-hierarchy: All records in an owner/child "hierarchy"
parts-list: A listing of parts and their designators
net-list: A listing of nets between parts pins, referred to by their designators'''))
args = parser.parse_args()
main(args)