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#! /usr/bin/env python
# -*- coding: utf-8 -*-
# Copyright 2014 Hamilton Kibbe <ham@hamiltonkib.be>
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
# http://www.apache.org/licenses/LICENSE-2.0
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
from . import rs274x
from . import excellon
from . import ipc356
from .exceptions import ParseError
from .utils import detect_file_format
def read(filename):
""" Read a gerber or excellon file and return a representative object.
Parameters
----------
filename : string
Filename of the file to read.
Returns
-------
file : CncFile subclass
CncFile object representing the file, either GerberFile, ExcellonFile,
or IPCNetlist. Returns None if file is not of the proper type.
"""
with open(filename, 'rU') as f:
data = f.read()
return loads(data, filename)
def loads(data, filename=None):
""" Read gerber or excellon file contents from a string and return a
representative object.
Parameters
----------
data : string
Source file contents as a string.
filename : string, optional
String containing the filename of the data source.
Returns
-------
file : CncFile subclass
CncFile object representing the data, either GerberFile, ExcellonFile,
or IPCNetlist. Returns None if data is not of the proper type.
"""
fmt = detect_file_format(data)
if fmt == 'rs274x':
return rs274x.loads(data, filename=filename)
elif fmt == 'excellon':
return excellon.loads(data, filename=filename)
elif fmt == 'ipc_d_356':
return ipc356.loads(data, filename=filename)
else:
raise ParseError('Unable to detect file format')
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