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#!/usr/bin/env python
# -*- coding: utf-8 -*-
# Copyright 2015 Garret Fick <garret@ficksworkshop.com>
# 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.
"""
Excellon Tool Definition File module
====================
**Excellon file classes**
This module provides Excellon file classes and parsing utilities
"""
import re
try:
from cStringIO import StringIO
except(ImportError):
from io import StringIO
from .excellon_statements import ExcellonTool
def loads(data, settings=None):
""" Read tool file information and return a map of tools
Parameters
----------
data : string
string containing Excellon Tool Definition file contents
Returns
-------
dict tool name: ExcellonTool
"""
return ExcellonToolDefinitionParser(settings).parse_raw(data)
class ExcellonToolDefinitionParser(object):
""" Excellon File Parser
Parameters
----------
None
"""
allegro_tool = re.compile(r'(?P<size>[0-9/.]+)\s+(?P<plated>P|N)\s+T(?P<toolid>[0-9]{2})\s+(?P<xtol>[0-9/.]+)\s+(?P<ytol>[0-9/.]+)')
allegro_comment_mils = re.compile('Holesize (?P<toolid>[0-9]{1,2})\. = (?P<size>[0-9/.]+) Tolerance = \+(?P<xtol>[0-9/.]+)/-(?P<ytol>[0-9/.]+) (?P<plated>(PLATED)|(NON_PLATED)|(OPTIONAL)) MILS Quantity = [0-9]+')
allegro2_comment_mils = re.compile('T(?P<toolid>[0-9]{1,2}) Holesize (?P<toolid2>[0-9]{1,2})\. = (?P<size>[0-9/.]+) Tolerance = \+(?P<xtol>[0-9/.]+)/-(?P<ytol>[0-9/.]+) (?P<plated>(PLATED)|(NON_PLATED)|(OPTIONAL)) MILS Quantity = [0-9]+')
allegro_comment_mm = re.compile('Holesize (?P<toolid>[0-9]{1,2})\. = (?P<size>[0-9/.]+) Tolerance = \+(?P<xtol>[0-9/.]+)/-(?P<ytol>[0-9/.]+) (?P<plated>(PLATED)|(NON_PLATED)|(OPTIONAL)) MM Quantity = [0-9]+')
allegro2_comment_mm = re.compile('T(?P<toolid>[0-9]{1,2}) Holesize (?P<toolid2>[0-9]{1,2})\. = (?P<size>[0-9/.]+) Tolerance = \+(?P<xtol>[0-9/.]+)/-(?P<ytol>[0-9/.]+) (?P<plated>(PLATED)|(NON_PLATED)|(OPTIONAL)) MM Quantity = [0-9]+')
matchers = [
(allegro_tool, 'mils'),
(allegro_comment_mils, 'mils'),
(allegro2_comment_mils, 'mils'),
(allegro_comment_mm, 'mm'),
(allegro2_comment_mm, 'mm'),
]
def __init__(self, settings=None):
self.tools = {}
self.settings = settings
def parse_raw(self, data):
for line in StringIO(data):
self._parse(line.strip())
return self.tools
def _parse(self, line):
for matcher in ExcellonToolDefinitionParser.matchers:
m = matcher[0].match(line)
if m:
unit = matcher[1]
size = float(m.group('size'))
platedstr = m.group('plated')
toolid = int(m.group('toolid'))
xtol = float(m.group('xtol'))
ytol = float(m.group('ytol'))
size = self._convert_length(size, unit)
xtol = self._convert_length(xtol, unit)
ytol = self._convert_length(ytol, unit)
if platedstr == 'PLATED':
plated = ExcellonTool.PLATED_YES
elif platedstr == 'NON_PLATED':
plated = ExcellonTool.PLATED_NO
elif platedstr == 'OPTIONAL':
plated = ExcellonTool.PLATED_OPTIONAL
else:
plated = ExcellonTool.PLATED_UNKNOWN
tool = ExcellonTool(None, number=toolid, diameter=size,
plated=plated)
self.tools[tool.number] = tool
break
def _convert_length(self, value, unit):
# Convert the value to mm
if unit == 'mils':
value /= 39.3700787402
# Now convert to the settings unit
if self.settings.units == 'inch':
return value / 25.4
else:
# Already in mm
return value
def loads_rep(data, settings=None):
""" Read tool report information generated by PADS and return a map of tools
Parameters
----------
data : string
string containing Excellon Report file contents
Returns
-------
dict tool name: ExcellonTool
"""
return ExcellonReportParser(settings).parse_raw(data)
class ExcellonReportParser(object):
# We sometimes get files with different encoding, so we can't actually
# match the text - the best we can do it detect the table header
header = re.compile(r'====\s+====\s+====\s+====\s+=====\s+===')
def __init__(self, settings=None):
self.tools = {}
self.settings = settings
self.found_header = False
def parse_raw(self, data):
for line in StringIO(data):
self._parse(line.strip())
return self.tools
def _parse(self, line):
# skip empty lines and "comments"
if not line.strip():
return
if not self.found_header:
# Try to find the heaader, since we need that to be sure we
# understand the contents correctly.
if ExcellonReportParser.header.match(line):
self.found_header = True
elif line[0] != '=':
# Already found the header, so we know to to map the contents
parts = line.split()
if len(parts) == 6:
toolid = int(parts[0])
size = float(parts[1])
if parts[2] == 'x':
plated = ExcellonTool.PLATED_YES
elif parts[2] == '-':
plated = ExcellonTool.PLATED_NO
else:
plated = ExcellonTool.PLATED_UNKNOWN
feedrate = int(parts[3])
speed = int(parts[4])
qty = int(parts[5])
tool = ExcellonTool(None, number=toolid, diameter=size,
plated=plated, feed_rate=feedrate,
rpm=speed)
self.tools[tool.number] = tool
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