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Diffstat (limited to 'gerber/gerber_statements.py')
| -rw-r--r-- | gerber/gerber_statements.py | 676 |
1 files changed, 676 insertions, 0 deletions
diff --git a/gerber/gerber_statements.py b/gerber/gerber_statements.py new file mode 100644 index 0000000..44eeee0 --- /dev/null +++ b/gerber/gerber_statements.py @@ -0,0 +1,676 @@ +#! /usr/bin/env python +# -*- coding: utf-8 -*- +""" +Gerber (RS-274X) Statements +=========================== +**Gerber RS-274X file statement classes** + +""" +from .utils import parse_gerber_value, write_gerber_value, decimal_string + + +__all__ = ['FSParamStmt', 'MOParamStmt', 'IPParamStmt', 'OFParamStmt', + 'LPParamStmt', 'ADParamStmt', 'AMParamStmt', 'INParamStmt', + 'LNParamStmt', 'CoordStmt', 'ApertureStmt', 'CommentStmt', + 'EofStmt', 'QuadrantModeStmt', 'RegionModeStmt', 'UnknownStmt', + 'ParamStmt'] + + +class Statement(object): + """ Gerber statement Base class + + The statement class provides a type attribute. + + Parameters + ---------- + type : string + String identifying the statement type. + + Attributes + ---------- + type : string + String identifying the statement type. + """ + def __init__(self, stype): + self.type = stype + + def __str__(self): + s = "<{0} ".format(self.__class__.__name__) + + for key, value in self.__dict__.items(): + s += "{0}={1} ".format(key, value) + + s = s.rstrip() + ">" + return s + + +class ParamStmt(Statement): + """ Gerber parameter statement Base class + + The parameter statement class provides a parameter type attribute. + + Parameters + ---------- + param : string + two-character code identifying the parameter statement type. + + Attributes + ---------- + param : string + Parameter type code + """ + def __init__(self, param): + Statement.__init__(self, "PARAM") + self.param = param + + +class FSParamStmt(ParamStmt): + """ FS - Gerber Format Specification Statement + """ + + @classmethod + def from_dict(cls, stmt_dict): + """ + """ + param = stmt_dict.get('param') + zeros = 'leading' if stmt_dict.get('zero') == 'L' else 'trailing' + notation = 'absolute' if stmt_dict.get('notation') == 'A' else 'incremental' + x = map(int, stmt_dict.get('x')) + fmt = (x[0], x[1]) + return cls(param, zeros, notation, fmt) + + def __init__(self, param, zero_suppression='leading', + notation='absolute', format=(2, 4)): + """ Initialize FSParamStmt class + + .. note:: + The FS command specifies the format of the coordinate data. It + must only be used once at the beginning of a file. It must be + specified before the first use of coordinate data. + + Parameters + ---------- + param : string + Parameter. + + zero_suppression : string + Zero-suppression mode. May be either 'leading' or 'trailing' + + notation : string + Notation mode. May be either 'absolute' or 'incremental' + + format : tuple (int, int) + Gerber precision format expressed as a tuple containing: + (number of integer-part digits, number of decimal-part digits) + + Returns + ------- + ParamStmt : FSParamStmt + Initialized FSParamStmt class. + + """ + ParamStmt.__init__(self, param) + self.zero_suppression = zero_suppression + self.notation = notation + self.format = format + + def to_gerber(self): + zero_suppression = 'L' if self.zero_suppression == 'leading' else 'T' + notation = 'A' if self.notation == 'absolute' else 'I' + fmt = ''.join(map(str, self.format)) + return '%FS{0}{1}X{2}Y{3}*%'.format(zero_suppression, notation, + fmt, fmt) + + def __str__(self): + return ('<Format Spec: %d:%d %s zero suppression %s notation>' % + (self.format[0], self.format[1], self.zero_suppression, + self.notation)) + + +class MOParamStmt(ParamStmt): + """ MO - Gerber Mode (measurement units) Statement. + """ + + @classmethod + def from_dict(cls, stmt_dict): + param = stmt_dict.get('param') + if stmt_dict.get('mo').lower() == 'in': + mo = 'inch' + elif stmt_dict.get('mo').lower() == 'mm': + mo = 'metric' + else: + mo = None + return cls(param, mo) + + def __init__(self, param, mo): + """ Initialize MOParamStmt class + + Parameters + ---------- + param : string + Parameter. + + mo : string + Measurement units. May be either 'inch' or 'metric' + + Returns + ------- + ParamStmt : MOParamStmt + Initialized MOParamStmt class. + + """ + ParamStmt.__init__(self, param) + self.mode = mo + + def to_gerber(self): + mode = 'MM' if self.mode == 'metric' else 'IN' + return '%MO{0}*%'.format(mode) + + def __str__(self): + mode_str = 'millimeters' if self.mode == 'metric' else 'inches' + return ('<Mode: %s>' % mode_str) + + +class IPParamStmt(ParamStmt): + """ IP - Gerber Image Polarity Statement. (Deprecated) + """ + @classmethod + def from_dict(cls, stmt_dict): + param = stmt_dict.get('param') + ip = 'positive' if stmt_dict.get('ip') == 'POS' else 'negative' + return cls(param, ip) + + def __init__(self, param, ip): + """ Initialize IPParamStmt class + + Parameters + ---------- + param : string + Parameter string. + + ip : string + Image polarity. May be either'positive' or 'negative' + + Returns + ------- + ParamStmt : IPParamStmt + Initialized IPParamStmt class. + + """ + ParamStmt.__init__(self, param) + self.ip = ip + + def to_gerber(self): + ip = 'POS' if self.ip == 'positive' else 'NEG' + return '%IP{0}*%'.format(ip) + + def __str__(self): + return ('<Image Polarity: %s>' % self.ip) + + +class OFParamStmt(ParamStmt): + """ OF - Gerber Offset statement (Deprecated) + """ + + @classmethod + def from_dict(cls, stmt_dict): + param = stmt_dict.get('param') + a = float(stmt_dict.get('a')) + b = float(stmt_dict.get('b')) + return cls(param, a, b) + + def __init__(self, param, a, b): + """ Initialize OFParamStmt class + + Parameters + ---------- + param : string + Parameter + + a : float + Offset along the output device A axis + + b : float + Offset along the output device B axis + + Returns + ------- + ParamStmt : OFParamStmt + Initialized OFParamStmt class. + + """ + ParamStmt.__init__(self, param) + self.a = a + self.b = b + + def to_gerber(self): + ret = '%OF' + if self.a: + ret += 'A' + decimal_string(self.a, precision=6) + if self.b: + ret += 'B' + decimal_string(self.b, precision=6) + return ret + '*%' + + def __str__(self): + offset_str = '' + if self.a: + offset_str += ('X: %f' % self.a) + if self.b: + offset_str += ('Y: %f' % self.b) + return ('<Offset: %s>' % offset_str) + + +class LPParamStmt(ParamStmt): + """ LP - Gerber Level Polarity statement + """ + + @classmethod + def from_dict(cls, stmt_dict): + param = stmt_dict['param'] + lp = 'clear' if stmt_dict.get('lp') == 'C' else 'dark' + return cls(param, lp) + + def __init__(self, param, lp): + """ Initialize LPParamStmt class + + Parameters + ---------- + param : string + Parameter + + lp : string + Level polarity. May be either 'clear' or 'dark' + + Returns + ------- + ParamStmt : LPParamStmt + Initialized LPParamStmt class. + + """ + ParamStmt.__init__(self, param) + self.lp = lp + + def to_gerber(self): + lp = 'C' if self.lp == 'clear' else 'D' + return '%LP{0}*%'.format(lp) + + def __str__(self): + return '<Level Polarity: %s>' % self.lp + + +class ADParamStmt(ParamStmt): + """ AD - Gerber Aperture Definition Statement + """ + + @classmethod + def from_dict(cls, stmt_dict): + param = stmt_dict.get('param') + d = int(stmt_dict.get('d')) + shape = stmt_dict.get('shape') + modifiers = stmt_dict.get('modifiers') + if modifiers is not None: + modifiers = [[float(x) for x in m.split('X')] + for m in modifiers.split(',')] + return cls(param, d, shape, modifiers) + + def __init__(self, param, d, shape, modifiers): + """ Initialize ADParamStmt class + + Parameters + ---------- + param : string + Parameter code + + d : int + Aperture D-code + + shape : string + aperture name + + modifiers : list of lists of floats + Shape modifiers + + Returns + ------- + ParamStmt : LPParamStmt + Initialized LPParamStmt class. + + """ + ParamStmt.__init__(self, param) + self.d = d + self.shape = shape + self.modifiers = modifiers + + def to_gerber(self, settings): + return '%ADD{0}{1},{2}*%'.format(self.d, self.shape, + ','.join(['X'.join(e) for e in self.modifiers])) + + def __str__(self): + if self.shape == 'C': + shape = 'circle' + elif self.shape == 'R': + shape = 'rectangle' + elif self.shape == 'O': + shape = 'oblong' + else: + shape = self.shape + + return '<Aperture Definition: %d: %s>' % (self.d, shape) + + +class AMParamStmt(ParamStmt): + """ AM - Aperture Macro Statement + """ + + @classmethod + def from_dict(cls, stmt_dict): + return cls(**stmt_dict) + + def __init__(self, param, name, macro): + """ Initialize AMParamStmt class + + Parameters + ---------- + param : string + Parameter code + + name : string + Aperture macro name + + macro : string + Aperture macro string + + Returns + ------- + ParamStmt : AMParamStmt + Initialized AMParamStmt class. + + """ + ParamStmt.__init__(self, param) + self.name = name + self.macro = macro + + def to_gerber(self): + return '%AM{0}*{1}*%'.format(self.name, self.macro) + + def __str__(self): + return '<Aperture Macro %s: %s>' % (self.name, macro) + + +class INParamStmt(ParamStmt): + """ IN - Image Name Statement + """ + @classmethod + def from_dict(cls, stmt_dict): + return cls(**stmt_dict) + + def __init__(self, param, name): + """ Initialize INParamStmt class + + Parameters + ---------- + param : string + Parameter code + + name : string + Image name + + Returns + ------- + ParamStmt : INParamStmt + Initialized INParamStmt class. + + """ + ParamStmt.__init__(self, param) + self.name = name + + def to_gerber(self): + return '%IN{0}*%'.format(self.name) + + def __str__(self): + return '<Image Name: %s>' % self.name + + +class LNParamStmt(ParamStmt): + """ LN - Level Name Statement (Deprecated) + """ + @classmethod + def from_dict(cls, stmt_dict): + return cls(**stmt_dict) + + def __init__(self, param, name): + """ Initialize LNParamStmt class + + Parameters + ---------- + param : string + Parameter code + + name : string + Level name + + Returns + ------- + ParamStmt : LNParamStmt + Initialized LNParamStmt class. + + """ + ParamStmt.__init__(self, param) + self.name = name + + def to_gerber(self): + return '%LN{0}*%'.format(self.name) + + def __str__(self): + return '<Level Name: %s>' % self.name + + +class CoordStmt(Statement): + """ Coordinate Data Block + """ + + @classmethod + def from_dict(cls, stmt_dict, settings): + zeros = settings.zero_suppression + format = settings.format + function = stmt_dict['function'] + x = stmt_dict.get('x') + y = stmt_dict.get('y') + i = stmt_dict.get('i') + j = stmt_dict.get('j') + op = stmt_dict.get('op') + + if x is not None: + x = parse_gerber_value(stmt_dict.get('x'), + format, zeros) + if y is not None: + y = parse_gerber_value(stmt_dict.get('y'), + format, zeros) + if i is not None: + i = parse_gerber_value(stmt_dict.get('i'), + format, zeros) + if j is not None: + j = parse_gerber_value(stmt_dict.get('j'), + format, zeros) + return cls(function, x, y, i, j, op, settings) + + def __init__(self, function, x, y, i, j, op, settings): + """ Initialize CoordStmt class + + Parameters + ---------- + function : string + function + + x : float + X coordinate + + y : float + Y coordinate + + i : float + Coordinate offset in the X direction + + j : float + Coordinate offset in the Y direction + + op : string + Operation code + + settings : dict {'zero_suppression', 'format'} + Gerber file coordinate format + + Returns + ------- + Statement : CoordStmt + Initialized CoordStmt class. + + """ + Statement.__init__(self, "COORD") + self.zero_suppression = settings.zero_suppression + self.format = settings.format + self.function = function + self.x = x + self.y = y + self.i = i + self.j = j + self.op = op + + def to_gerber(self): + ret = '' + if self.function: + ret += self.function + if self.x: + ret += 'X{0}'.format(write_gerber_value(self.x, self.zeros, + self.format)) + if self.y: + ret += 'Y{0}'.format(write_gerber_value(self.y, self. zeros, + self.format)) + if self.i: + ret += 'I{0}'.format(write_gerber_value(self.i, self.zeros, + self.format)) + if self.j: + ret += 'J{0}'.format(write_gerber_value(self.j, self.zeros, + self.format)) + if self.op: + ret += self.op + return ret + '*' + + def __str__(self): + coord_str = '' + if self.function: + coord_str += 'Fn: %s ' % self.function + if self.x: + coord_str += 'X: %f ' % self.x + if self.y: + coord_str += 'Y: %f ' % self.y + if self.i: + coord_str += 'I: %f ' % self.i + if self.j: + coord_str += 'J: %f ' % self.j + if self.op: + if self.op == 'D01': + op = 'Lights On' + elif self.op == 'D02': + op = 'Lights Off' + elif self.op == 'D03': + op = 'Flash' + else: + op = self.op + coord_str += 'Op: %s' % op + + return '<Coordinate Statement: %s>' % coord_str + + +class ApertureStmt(Statement): + """ Aperture Statement + """ + def __init__(self, d): + Statement.__init__(self, "APERTURE") + self.d = int(d) + + def to_gerber(self): + return 'G54D{0}*'.format(self.d) + + def __str__(self): + return '<Aperture: %d>' % self.d + + +class CommentStmt(Statement): + """ Comment Statment + """ + + def __init__(self, comment): + Statement.__init__(self, "COMMENT") + self.comment = comment + + def to_gerber(self): + return 'G04{0}*'.format(self.comment) + + def __str__(self): + return '<Comment: %s>' % self.comment + + +class EofStmt(Statement): + """ EOF Statement + """ + def __init__(self): + Statement.__init__(self, "EOF") + + def to_gerber(self): + return 'M02*' + + def __str__(self): + return '<EOF Statement>' + + +class QuadrantModeStmt(Statement): + + @classmethod + def from_gerber(cls, line): + if 'G74' not in line and 'G75' not in line: + raise ValueError('%s is not a valid quadrant mode statement' + % line) + return (cls('single-quadrant') if line[:3] == 'G74' + else cls('multi-quadrant')) + + def __init__(self, mode): + super(QuadrantModeStmt, self).__init__('QuadrantMode') + mode = mode.lower() + if mode not in ['single-quadrant', 'multi-quadrant']: + raise ValueError('Quadrant mode must be "single-quadrant" \ + or "multi-quadrant"') + self.mode = mode + + def to_gerber(self): + return 'G74*' if self.mode == 'single-quadrant' else 'G75*' + + +class RegionModeStmt(Statement): + + @classmethod + def from_gerber(cls, line): + if 'G36' not in line and 'G37' not in line: + raise ValueError('%s is not a valid region mode statement' % line) + return (cls('on') if line[:3] == 'G36' else cls('off')) + + def __init__(self, mode): + super(RegionModeStmt, self).__init__('RegionMode') + mode = mode.lower() + if mode not in ['on', 'off']: + raise ValueError('Valid modes are "on" or "off"') + self.mode = mode + + def to_gerber(self): + return 'G36*' if self.mode == 'on' else 'G37*' + + +class UnknownStmt(Statement): + """ Unknown Statement + """ + def __init__(self, line): + Statement.__init__(self, "UNKNOWN") + self.line = line + + def to_gerber(self): + return self.line |