355 lines
10 KiB
Python
355 lines
10 KiB
Python
#! /usr/bin/env python
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# -*- coding: utf-8 -*-
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# Copyright 2013-2014 Paulo Henrique Silva <ph.silva@gmail.com>
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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# http://www.apache.org/licenses/LICENSE-2.0
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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import re
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import json
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class Statement(object):
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def __init__(self, type):
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self.type = type
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def __str__(self):
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s = "<{0} ".format(self.__class__.__name__)
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for key, value in self.__dict__.items():
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s += "{0}={1} ".format(key, value)
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s = s.rstrip() + ">"
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return s
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class ParamStmt(Statement):
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def __init__(self, param):
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Statement.__init__(self, "PARAM")
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self.param = param
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class FSParamStmt(ParamStmt):
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def __init__(self, param, zero="L", notation="A", x="24", y="24"):
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ParamStmt.__init__(self, param)
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self.zero = zero
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self.notation = notation
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self.x = x
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self.y = y
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class MOParamStmt(ParamStmt):
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def __init__(self, param, mo):
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ParamStmt.__init__(self, param)
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self.mo = mo
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class IPParamStmt(ParamStmt):
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def __init__(self, param, ip):
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ParamStmt.__init__(self, param)
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self.ip = ip
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class OFParamStmt(ParamStmt):
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def __init__(self, param, a, b):
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ParamStmt.__init__(self, param)
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self.a = a
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self.b = b
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class LPParamStmt(ParamStmt):
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def __init__(self, param, lp):
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ParamStmt.__init__(self, param)
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self.lp = lp
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class ADParamStmt(ParamStmt):
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def __init__(self, param, d, shape, modifiers):
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ParamStmt.__init__(self, param)
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self.d = d
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self.shape = shape
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self.modifiers = [[x for x in m.split("X")] for m in modifiers.split(",")]
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class AMParamStmt(ParamStmt):
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def __init__(self, param, name, macro):
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ParamStmt.__init__(self, param)
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self.name = name
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self.macro = macro
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class INParamStmt(ParamStmt):
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def __init__(self, param, name):
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ParamStmt.__init__(self, param)
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self.name = name
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class LNParamStmt(ParamStmt):
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def __init__(self, param, name):
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ParamStmt.__init__(self, param)
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self.name = name
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class CoordStmt(Statement):
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def __init__(self, function, x, y, i, j, op):
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Statement.__init__(self, "COORD")
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self.function = function
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self.x = x
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self.y = y
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self.i = i
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self.j = j
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self.op = op
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class ApertureStmt(Statement):
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def __init__(self, d):
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Statement.__init__(self, "APERTURE")
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self.d = int(d)
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class CommentStmt(Statement):
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def __init__(self, comment):
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Statement.__init__(self, "COMMENT")
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self.comment = comment
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class EofStmt(Statement):
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def __init__(self):
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Statement.__init__(self, "EOF")
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class UnknownStmt(Statement):
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def __init__(self, line):
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Statement.__init__(self, "UNKNOWN")
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self.line = line
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class GerberParser(object):
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NUMBER = r"[\+-]?\d+"
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DECIMAL = r"[\+-]?\d+([.]?\d+)?"
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STRING = r"[a-zA-Z0-9_+\-/!?<>”’(){}.\|&@# :]+"
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NAME = "[a-zA-Z_$][a-zA-Z_$0-9]+"
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FUNCTION = r"G\d{2}"
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COORD_OP = r"D[0]?[123]"
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FS = r"(?P<param>FS)(?P<zero>(L|T))?(?P<notation>(A|I))X(?P<x>[0-7][0-7])Y(?P<y>[0-7][0-7])"
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MO = r"(?P<param>MO)(?P<mo>(MM|IN))"
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IP = r"(?P<param>IP)(?P<ip>(POS|NEG))"
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LP = r"(?P<param>LP)(?P<lp>(D|C))"
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AD_CIRCLE = r"(?P<param>AD)D(?P<d>\d+)(?P<shape>C)[,](?P<modifiers>[^,]*)"
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AD_RECT = r"(?P<param>AD)D(?P<d>\d+)(?P<shape>R)[,](?P<modifiers>[^,]*)"
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AD_OBROUND = r"(?P<param>AD)D(?P<d>\d+)(?P<shape>O)[,](?P<modifiers>[^,]*)"
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AD_POLY = r"(?P<param>AD)D(?P<d>\d+)(?P<shape>P)[,](?P<modifiers>[^,]*)"
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AD_MACRO = r"(?P<param>AD)D(?P<d>\d+)+(?P<shape>{name})[,](?P<modifiers>[^,]*)".format(name=NAME)
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AM = r"(?P<param>AM)(?P<name>{name})\*(?P<macro>.*)".format(name=NAME)
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# begin deprecated
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OF = r"(?P<param>OF)(A(?P<a>{decimal}))?(B(?P<b>{decimal}))?".format(decimal=DECIMAL)
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IN = r"(?P<param>IN)(?P<name>.*)"
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LN = r"(?P<param>LN)(?P<name>.*)"
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# end deprecated
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PARAMS = (FS, MO, IP, LP, AD_CIRCLE, AD_RECT, AD_OBROUND, AD_MACRO, AD_POLY, AM, OF, IN, LN)
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PARAM_STMT = [re.compile(r"%{0}\*%".format(p)) for p in PARAMS]
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COORD_STMT = re.compile((
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r"(?P<function>{function})?"
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r"(X(?P<x>{number}))?(Y(?P<y>{number}))?"
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r"(I(?P<i>{number}))?(J(?P<j>{number}))?"
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r"(?P<op>{op})?\*".format(number=NUMBER, function=FUNCTION, op=COORD_OP)))
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APERTURE_STMT = re.compile(r"(G54)?D(?P<d>\d+)\*")
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COMMENT_STMT = re.compile(r"G04(?P<comment>{string})(\*)?".format(string=STRING))
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EOF_STMT = re.compile(r"(?P<eof>M02)\*")
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def __init__(self, ctx):
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self.statements = []
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self.ctx = ctx
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def parse(self, filename):
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fp = open(filename, "r")
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data = fp.readlines()
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for stmt in self._parse(data):
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self.statements.append(stmt)
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self._evaluate(stmt)
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def dump_json(self):
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stmts = {"statements": [stmt.__dict__ for stmt in self.statements]}
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return json.dumps(stmts)
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def dump_str(self):
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s = ""
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for stmt in self.statements:
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s += str(stmt) + "\n"
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return s
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def dump(self):
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self.ctx.dump()
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def _parse(self, data):
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multiline = None
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for i, line in enumerate(data):
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# remove EOL
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if multiline:
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line = multiline + line.strip()
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else:
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line = line.strip()
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# skip empty lines
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if not len(line):
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continue
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# deal with multi-line parameters
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if line.startswith("%") and not line.endswith("%"):
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multiline = line
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continue
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else:
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multiline = None
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# coord
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coords = self._match_many(self.COORD_STMT, line)
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if coords:
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for coord in coords:
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yield CoordStmt(**coord)
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continue
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# aperture selection
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aperture = self._match_one(self.APERTURE_STMT, line)
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if aperture:
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yield ApertureStmt(**aperture)
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continue
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# comment
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comment = self._match_one(self.COMMENT_STMT, line)
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if comment:
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yield CommentStmt(comment["comment"])
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continue
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# parameter
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param = self._match_one_from_many(self.PARAM_STMT, line)
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if param:
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if param["param"] == "FS":
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yield FSParamStmt(**param)
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elif param["param"] == "MO":
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yield MOParamStmt(**param)
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elif param["param"] == "IP":
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yield IPParamStmt(**param)
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elif param["param"] == "LP":
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yield LPParamStmt(**param)
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elif param["param"] == "AD":
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yield ADParamStmt(**param)
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elif param["param"] == "AM":
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yield AMParamStmt(**param)
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elif param["param"] == "OF":
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yield OFParamStmt(**param)
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elif param["param"] == "IN":
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yield INParamStmt(**param)
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elif param["param"] == "LN":
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yield LNParamStmt(**param)
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else:
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yield UnknownStmt(line)
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continue
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# eof
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eof = self._match_one(self.EOF_STMT, line)
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if eof:
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yield EofStmt()
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continue
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if False:
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print self.COORD_STMT.pattern
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print self.APERTURE_STMT.pattern
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print self.COMMENT_STMT.pattern
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print self.EOF_STMT.pattern
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for i in self.PARAM_STMT:
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print i.pattern
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yield UnknownStmt(line)
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def _match_one(self, expr, data):
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match = expr.match(data)
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if match is None:
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return {}
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else:
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return match.groupdict()
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def _match_one_from_many(self, exprs, data):
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for expr in exprs:
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match = expr.match(data)
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if match:
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return match.groupdict()
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return {}
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def _match_many(self, expr, data):
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result = []
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pos = 0
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while True:
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match = expr.match(data, pos)
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if match:
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result.append(match.groupdict())
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pos = match.endpos
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else:
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break
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return result
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def _evaluate(self, stmt):
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if isinstance(stmt, (CommentStmt, UnknownStmt, EofStmt)):
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return
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elif isinstance(stmt, ParamStmt):
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self._evaluate_param(stmt)
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elif isinstance(stmt, CoordStmt):
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self._evaluate_coord(stmt)
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elif isinstance(stmt, ApertureStmt):
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self._evaluate_aperture(stmt)
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else:
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raise Exception("Invalid statement to evaluate")
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def _evaluate_param(self, stmt):
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if stmt.param == "FS":
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self.ctx.set_coord_format(stmt.zero, stmt.x, stmt.y)
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self.ctx.set_coord_notation(stmt.notation)
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elif stmt.param == "MO:":
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self.ctx.set_coord_unit(stmt.mo)
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elif stmt.param == "IP:":
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self.ctx.set_image_polarity(stmt.ip)
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elif stmt.param == "LP:":
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self.ctx.set_level_polarity(stmt.lp)
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elif stmt.param == "AD":
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self.ctx.define_aperture(stmt.d, stmt.shape, stmt.modifiers)
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def _evaluate_coord(self, stmt):
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if stmt.function in ("G01", "G1", "G02", "G2", "G03", "G3"):
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self.ctx.set_interpolation(stmt.function)
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if stmt.op == "D01":
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self.ctx.stroke(stmt.x, stmt.y)
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elif stmt.op == "D02":
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self.ctx.move(stmt.x, stmt.y)
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elif stmt.op == "D03":
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self.ctx.flash(stmt.x, stmt.y)
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def _evaluate_aperture(self, stmt):
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self.ctx.set_aperture(stmt.d)
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