share/extensions/dxf_input.py

   1 #!/usr/bin/env python
   2 '''
   3 dxf_input.py - input a DXF file >= (AutoCAD Release 13 == AC1012)
   4
   5 Copyright (C) 2008, 2009 Alvin Penner, penner@vaxxine.com
   6 Copyright (C) 2009 Christian Mayer, inkscape@christianmayer.de
   7 - thanks to Aaron Spike for inkex.py and simplestyle.py
   8 - without which this would not have been possible
   9
  10 This program is free software; you can redistribute it and/or modify
  11 it under the terms of the GNU General Public License as published by
  12 the Free Software Foundation; either version 2 of the License, or
  13 (at your option) any later version.
  14
  15 This program is distributed in the hope that it will be useful,
  16 but WITHOUT ANY WARRANTY; without even the implied warranty of
  17 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18 GNU General Public License for more details.
  19
  20 You should have received a copy of the GNU General Public License
  21 along with this program; if not, write to the Free Software
  22 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  23 '''
  24
  25 import inkex, simplestyle, math
  26 from StringIO import StringIO
  27 from urllib import quote
  28
  29 def export_MTEXT():
  30     # mandatory group codes : (1 or 3, 10, 20) (text, x, y)
  31     if (vals[groups['1']] or vals[groups['3']]) and vals[groups['10']] and vals[groups['20']]:
  32         x = vals[groups['10']][0]
  33         y = vals[groups['20']][0]
  34         # optional group codes : (21, 40, 50) (direction, text height mm, text angle)
  35         size = 12                       # default fontsize in px
  36         if vals[groups['40']]:
  37             size = scale*vals[groups['40']][0]
  38         attribs = {'x': '%f' % x, 'y': '%f' % y, 'style': 'font-size: %.1fpx; fill: %s; font-family: %s' % (size, color, options.font)}
  39         angle = 0                       # default angle in degrees
  40         if vals[groups['50']]:
  41             angle = vals[groups['50']][0]
  42             attribs.update({'transform': 'rotate (%f %f %f)' % (-angle, x, y)})
  43         elif vals[groups['21']]:
  44             if vals[groups['21']][0] == 1.0:
  45                 attribs.update({'transform': 'rotate (%f %f %f)' % (-90, x, y)})
  46             elif vals[groups['21']][0] == -1.0:
  47                 attribs.update({'transform': 'rotate (%f %f %f)' % (90, x, y)})
  48         attribs.update({inkex.addNS('linespacing','sodipodi'): '125%'})
  49         node = inkex.etree.SubElement(layer, 'text', attribs)
  50         text = ''
  51         if vals[groups['3']]:
  52             for i in range (0, len(vals[groups['3']])):
  53                 text += vals[groups['3']][i]
  54         if vals[groups['1']]:
  55             text += vals[groups['1']][0]
  56         found = text.find('\P')         # new line
  57         while found > -1:
  58             tspan = inkex.etree.SubElement(node , 'tspan', {inkex.addNS('role','sodipodi'): 'line'})
  59             tspan.text = text[:found]
  60             text = text[(found+2):]
  61             found = text.find('\P')
  62         tspan = inkex.etree.SubElement(node , 'tspan', {inkex.addNS('role','sodipodi'): 'line'})
  63         tspan.text = text
  64
  65 def export_POINT():
  66     # mandatory group codes : (10, 20) (x, y)
  67     if vals[groups['10']] and vals[groups['20']]:
  68         if options.gcodetoolspoints:
  69             generate_gcodetools_point(vals[groups['10']][0], vals[groups['20']][0])
  70         else:
  71             generate_ellipse(vals[groups['10']][0], vals[groups['20']][0], w/2, 0.0, 1.0, 0.0, 0.0)
  72
  73 def export_LINE():
  74     # mandatory group codes : (10, 11, 20, 21) (x1, x2, y1, y2)
  75     if vals[groups['10']] and vals[groups['11']] and vals[groups['20']] and vals[groups['21']]:
  76         path = 'M %f,%f %f,%f' % (vals[groups['10']][0], vals[groups['20']][0], scale*(vals[groups['11']][0] - xmin), - scale*(vals[groups['21']][0] - ymax))
  77         attribs = {'d': path, 'style': style}
  78         inkex.etree.SubElement(layer, 'path', attribs)
  79
  80 def export_SPLINE():
  81     # mandatory group codes : (10, 20, 70) (x, y, flags)
  82     if vals[groups['10']] and vals[groups['20']] and vals[groups['70']]:
  83         if not (vals[groups['70']][0] & 3) and len(vals[groups['10']]) == 4 and len(vals[groups['20']]) == 4:
  84             path = 'M %f,%f C %f,%f %f,%f %f,%f' % (vals[groups['10']][0], vals[groups['20']][0], vals[groups['10']][1], vals[groups['20']][1], vals[groups['10']][2], vals[groups['20']][2], vals[groups['10']][3], vals[groups['20']][3])
  85             attribs = {'d': path, 'style': style}
  86             inkex.etree.SubElement(layer, 'path', attribs)
  87         if not (vals[groups['70']][0] & 3) and len(vals[groups['10']]) == 3 and len(vals[groups['20']]) == 3:
  88             path = 'M %f,%f Q %f,%f %f,%f' % (vals[groups['10']][0], vals[groups['20']][0], vals[groups['10']][1], vals[groups['20']][1], vals[groups['10']][2], vals[groups['20']][2])
  89             attribs = {'d': path, 'style': style}
  90             inkex.etree.SubElement(layer, 'path', attribs)
  91         if not (vals[groups['70']][0] & 3) and len(vals[groups['10']]) == 5 and len(vals[groups['20']]) == 5:
  92             path = 'M %f,%f Q %f,%f %f,%f Q %f,%f %f,%f' % (vals[groups['10']][0], vals[groups['20']][0], vals[groups['10']][1], vals[groups['20']][1], vals[groups['10']][2], vals[groups['20']][2], vals[groups['10']][3], vals[groups['20']][3], vals[groups['10']][4], vals[groups['20']][4])
  93             attribs = {'d': path, 'style': style}
  94             inkex.etree.SubElement(layer, 'path', attribs)
  95
  96 def export_CIRCLE():
  97     # mandatory group codes : (10, 20, 40) (x, y, radius)
  98     if vals[groups['10']] and vals[groups['20']] and vals[groups['40']]:
  99         generate_ellipse(vals[groups['10']][0], vals[groups['20']][0], scale*vals[groups['40']][0], 0.0, 1.0, 0.0, 0.0)
 100
 101 def export_ARC():
 102     # mandatory group codes : (10, 20, 40, 50, 51) (x, y, radius, angle1, angle2)
 103     if vals[groups['10']] and vals[groups['20']] and vals[groups['40']] and vals[groups['50']] and vals[groups['51']]:
 104         generate_ellipse(vals[groups['10']][0], vals[groups['20']][0], scale*vals[groups['40']][0], 0.0, 1.0, vals[groups['50']][0]*math.pi/180.0, vals[groups['51']][0]*math.pi/180.0)
 105
 106 def export_ELLIPSE():
 107     # mandatory group codes : (10, 11, 20, 21, 40, 41, 42) (xc, xm, yc, ym, width ratio, angle1, angle2)
 108     if vals[groups['10']] and vals[groups['11']] and vals[groups['20']] and vals[groups['21']] and vals[groups['40']] and vals[groups['41']] and vals[groups['42']]:
 109         generate_ellipse(vals[groups['10']][0], vals[groups['20']][0], scale*vals[groups['11']][0], scale*vals[groups['21']][0], vals[groups['40']][0], vals[groups['41']][0], vals[groups['42']][0])
 110
 111 def export_LEADER():
 112     # mandatory group codes : (10, 20) (x, y)
 113     if vals[groups['10']] and vals[groups['20']]:
 114         if len(vals[groups['10']]) > 1 and len(vals[groups['20']]) == len(vals[groups['10']]):
 115             path = 'M %f,%f' % (vals[groups['10']][0], vals[groups['20']][0])
 116             for i in range (1, len(vals[groups['10']])):
 117                 path += ' %f,%f' % (vals[groups['10']][i], vals[groups['20']][i])
 118             attribs = {'d': path, 'style': style}
 119             inkex.etree.SubElement(layer, 'path', attribs)
 120
 121 def export_LWPOLYLINE():
 122     # mandatory group codes : (10, 20, 70) (x, y, flags)
 123     if vals[groups['10']] and vals[groups['20']] and vals[groups['70']]:
 124         if len(vals[groups['10']]) > 1 and len(vals[groups['20']]) == len(vals[groups['10']]):
 125             # optional group codes : (42) (bulge)
 126             iseqs = 0
 127             ibulge = 0
 128             if vals[groups['70']][0]:           # closed path
 129                 seqs.append('20')
 130                 vals[groups['10']].append(vals[groups['10']][0])
 131                 vals[groups['20']].append(vals[groups['20']][0])
 132             while seqs[iseqs] != '20':
 133                 iseqs += 1
 134             path = 'M %f,%f' % (vals[groups['10']][0], vals[groups['20']][0])
 135             xold = vals[groups['10']][0]
 136             yold = vals[groups['20']][0]
 137             for i in range (1, len(vals[groups['10']])):
 138                 bulge = 0
 139                 iseqs += 1
 140                 while seqs[iseqs] != '20':
 141                     if seqs[iseqs] == '42':
 142                         bulge = vals[groups['42']][ibulge]
 143                         ibulge += 1
 144                     iseqs += 1
 145                 if bulge:
 146                     sweep = 0                   # sweep CCW
 147                     if bulge < 0:
 148                         sweep = 1               # sweep CW
 149                         bulge = -bulge
 150                     large = 0                   # large-arc-flag
 151                     if bulge > 1:
 152                         large = 1
 153                     r = math.sqrt((vals[groups['10']][i] - xold)**2 + (vals[groups['20']][i] - yold)**2)
 154                     r = 0.25*r*(bulge + 1.0/bulge)
 155                     path += ' A %f,%f 0.0 %d %d %f,%f' % (r, r, large, sweep, vals[groups['10']][i], vals[groups['20']][i])
 156                 else:
 157                     path += ' L %f,%f' % (vals[groups['10']][i], vals[groups['20']][i])
 158                 xold = vals[groups['10']][i]
 159                 yold = vals[groups['20']][i]
 160             if vals[groups['70']][0]:           # closed path
 161                 path += ' z'
 162             attribs = {'d': path, 'style': style}
 163             inkex.etree.SubElement(layer, 'path', attribs)
 164
 165 def export_HATCH():
 166     # mandatory group codes : (10, 20, 70, 72, 92, 93) (x, y, fill, Edge Type, Path Type, Number of edges)
 167     if vals[groups['10']] and vals[groups['20']] and vals[groups['70']] and vals[groups['72']] and vals[groups['92']] and vals[groups['93']]:
 168         if len(vals[groups['10']]) > 1 and len(vals[groups['20']]) == len(vals[groups['10']]):
 169             # optional group codes : (11, 21, 40, 50, 51, 73) (x, y, r, angle1, angle2, CCW)
 170             i10 = 1    # count start points
 171             i11 = 0    # count line end points
 172             i40 = 0    # count circles
 173             i72 = 0    # count edge type flags
 174             path = ''
 175             for i in range (0, len(vals[groups['93']])):
 176                 xc = vals[groups['10']][i10]
 177                 yc = vals[groups['20']][i10]
 178                 if vals[groups['72']][i72] == 2:            # arc
 179                     rm = scale*vals[groups['40']][i40]
 180                     a1 = vals[groups['50']][i40]
 181                     path += 'M %f,%f ' % (xc + rm*math.cos(a1*math.pi/180.0), yc + rm*math.sin(a1*math.pi/180.0))
 182                 else:
 183                     a1 = 0
 184                     path += 'M %f,%f ' % (xc, yc)
 185                 for j in range(0, vals[groups['93']][i]):
 186                     if vals[groups['92']][i] & 2:           # polyline
 187                         if j > 0:
 188                             path += 'L %f,%f ' % (vals[groups['10']][i10], vals[groups['20']][i10])
 189                         if j == vals[groups['93']][i] - 1:
 190                             i72 += 1
 191                     elif vals[groups['72']][i72] == 2:      # arc
 192                         xc = vals[groups['10']][i10]
 193                         yc = vals[groups['20']][i10]
 194                         rm = scale*vals[groups['40']][i40]
 195                         a2 = vals[groups['51']][i40]
 196                         diff = (a2 - a1 + 360) % (360)
 197                         sweep = 1 - vals[groups['73']][i40] # sweep CCW
 198                         large = 0                           # large-arc-flag
 199                         if diff:
 200                             path += 'A %f,%f 0.0 %d %d %f,%f ' % (rm, rm, large, sweep, xc + rm*math.cos(a2*math.pi/180.0), yc + rm*math.sin(a2*math.pi/180.0))
 201                         else:
 202                             path += 'A %f,%f 0.0 %d %d %f,%f ' % (rm, rm, large, sweep, xc + rm*math.cos((a1+180.0)*math.pi/180.0), yc + rm*math.sin((a1+180.0)*math.pi/180.0))
 203                             path += 'A %f,%f 0.0 %d %d %f,%f ' % (rm, rm, large, sweep, xc + rm*math.cos(a1*math.pi/180.0), yc + rm*math.sin(a1*math.pi/180.0))
 204                         i40 += 1
 205                         i72 += 1
 206                     elif vals[groups['72']][i72] == 1:      # line
 207                         path += 'L %f,%f ' % (scale*(vals[groups['11']][i11] - xmin), -scale*(vals[groups['21']][i11] - ymax))
 208                         i11 += 1
 209                         i72 += 1
 210                     i10 += 1
 211                 path += "z "
 212             if vals[groups['70']][0]:
 213                 style = simplestyle.formatStyle({'fill': '%s' % color})
 214             else:
 215                 style = simplestyle.formatStyle({'fill': 'url(#Hatch)', 'fill-opacity': '1.0'})
 216             attribs = {'d': path, 'style': style}
 217             inkex.etree.SubElement(layer, 'path', attribs)
 218
 219 def export_DIMENSION():
 220     # mandatory group codes : (10, 11, 13, 14, 20, 21, 23, 24) (x1..4, y1..4)
 221     if vals[groups['10']] and vals[groups['11']] and vals[groups['13']] and vals[groups['14']] and vals[groups['20']] and vals[groups['21']] and vals[groups['23']] and vals[groups['24']]:
 222         dx = abs(vals[groups['10']][0] - vals[groups['13']][0])
 223         dy = abs(vals[groups['20']][0] - vals[groups['23']][0])
 224         if (vals[groups['10']][0] == vals[groups['14']][0]) and dx > 0.00001:
 225             d = dx/scale
 226             dy = 0
 227             path = 'M %f,%f %f,%f' % (vals[groups['10']][0], vals[groups['20']][0], vals[groups['13']][0], vals[groups['20']][0])
 228         elif (vals[groups['20']][0] == vals[groups['24']][0]) and dy > 0.00001:
 229             d = dy/scale
 230             dx = 0
 231             path = 'M %f,%f %f,%f' % (vals[groups['10']][0], vals[groups['20']][0], vals[groups['10']][0], vals[groups['23']][0])
 232         else:
 233             return
 234         attribs = {'d': path, 'style': style + '; marker-start: url(#DistanceX); marker-end: url(#DistanceX); stroke-width: 0.25px'}
 235         inkex.etree.SubElement(layer, 'path', attribs)
 236         x = scale*(vals[groups['11']][0] - xmin)
 237         y = - scale*(vals[groups['21']][0] - ymax)
 238         size = 12                   # default fontsize in px
 239         if vals[groups['3']]:
 240             if DIMTXT.has_key(vals[groups['3']][0]):
 241                 size = scale*DIMTXT[vals[groups['3']][0]]
 242                 if size < 2:
 243                     size = 2
 244         attribs = {'x': '%f' % x, 'y': '%f' % y, 'style': 'font-size: %.1fpx; fill: %s; font-family: %s; text-anchor: middle; text-align: center' % (size, color, options.font)}
 245         if dx == 0:
 246             attribs.update({'transform': 'rotate (%f %f %f)' % (-90, x, y)})
 247         node = inkex.etree.SubElement(layer, 'text', attribs)
 248         tspan = inkex.etree.SubElement(node , 'tspan', {inkex.addNS('role','sodipodi'): 'line'})
 249         tspan.text = str(float('%.2f' % d))
 250
 251 def export_INSERT():
 252     # mandatory group codes : (2, 10, 20) (block name, x, y)
 253     if vals[groups['2']] and vals[groups['10']] and vals[groups['20']]:
 254         x = vals[groups['10']][0]
 255         y = vals[groups['20']][0] - scale*ymax
 256         attribs = {'x': '%f' % x, 'y': '%f' % y, inkex.addNS('href','xlink'): '#' + quote(vals[groups['2']][0].encode("utf-8"))}
 257         inkex.etree.SubElement(layer, 'use', attribs)
 258
 259 def export_BLOCK():
 260     # mandatory group codes : (2) (block name)
 261     if vals[groups['2']]:
 262         global block
 263         block = inkex.etree.SubElement(defs, 'symbol', {'id': vals[groups['2']][0]})
 264
 265 def export_ENDBLK():
 266     global block
 267     block = defs                                    # initiallize with dummy
 268
 269 def export_ATTDEF():
 270     # mandatory group codes : (1, 2) (default, tag)
 271     if vals[groups['1']] and vals[groups['2']]:
 272         vals[groups['1']][0] = vals[groups['2']][0]
 273         export_MTEXT()
 274
 275 def generate_ellipse(xc, yc, xm, ym, w, a1, a2):
 276     rm = math.sqrt(xm*xm + ym*ym)
 277     a = math.atan2(ym, xm)
 278     diff = (a2 - a1 + 2*math.pi) % (2*math.pi)
 279     if abs(diff) > 0.0000001 and abs(diff - 2*math.pi) > 0.0000001: # open arc
 280         large = 0                   # large-arc-flag
 281         if diff > math.pi:
 282             large = 1
 283         xt = rm*math.cos(a1)
 284         yt = w*rm*math.sin(a1)
 285         x1 = xt*math.cos(a) - yt*math.sin(a)
 286         y1 = xt*math.sin(a) + yt*math.cos(a)
 287         xt = rm*math.cos(a2)
 288         yt = w*rm*math.sin(a2)
 289         x2 = xt*math.cos(a) - yt*math.sin(a)
 290         y2 = xt*math.sin(a) + yt*math.cos(a)
 291         path = 'M %f,%f A %f,%f %f %d 0 %f,%f' % (xc+x1, yc-y1, rm, w*rm, -180.0*a/math.pi, large, xc+x2, yc-y2)
 292     else:                           # closed arc
 293         path = 'M %f,%f A %f,%f %f 1 0 %f,%f %f,%f %f 1 0 %f,%f z' % (xc+xm, yc-ym, rm, w*rm, -180.0*a/math.pi, xc-xm, yc+ym, rm, w*rm, -180.0*a/math.pi, xc+xm, yc-ym)
 294     attribs = {'d': path, 'style': style}
 295     inkex.etree.SubElement(layer, 'path', attribs)
 296
 297 def generate_gcodetools_point(xc, yc):
 298     path= 'm %s,%s 2.9375,-6.34375 0.8125,1.90625 6.84375,-6.84375 0,0 0.6875,0.6875 -6.84375,6.84375 1.90625,0.8125 z' % (xc,yc)
 299     attribs = {'d': path, inkex.addNS('dxfpoint','inkscape'):'1', 'style': 'stroke:#ff0000;fill:#ff0000'}
 300     inkex.etree.SubElement(layer, 'path', attribs)
 301
 302 def get_line():
 303     return (stream.readline().strip(), stream.readline().strip())
 304
 305 def get_group(group):
 306     line = get_line()
 307     if line[0] == group:
 308         return float(line[1])
 309     else:
 310         return 0.0
 311
 312 #   define DXF Entities and specify which Group Codes to monitor
 313
 314 entities = {'MTEXT': export_MTEXT, 'TEXT': export_MTEXT, 'POINT': export_POINT, 'LINE': export_LINE, 'SPLINE': export_SPLINE, 'CIRCLE': export_CIRCLE, 'ARC': export_ARC, 'ELLIPSE': export_ELLIPSE, 'LEADER': export_LEADER, 'LWPOLYLINE': export_LWPOLYLINE, 'HATCH': export_HATCH, 'DIMENSION': export_DIMENSION, 'INSERT': export_INSERT, 'BLOCK': export_BLOCK, 'ENDBLK': export_ENDBLK, 'ATTDEF': export_ATTDEF, 'VIEWPORT': False, 'DICTIONARY': False}
 315 groups = {'1': 0, '2': 1, '3': 2, '6': 3, '8': 4, '10': 5, '11': 6, '13': 7, '14': 8, '20': 9, '21': 10, '23': 11, '24': 12, '40': 13, '41': 14, '42': 15, '50': 16, '51': 17, '62': 18, '70': 19, '72': 20, '73': 21, '92': 22, '93': 23, '370': 24}
 316 colors = {  1: '#FF0000',   2: '#FFFF00',   3: '#00FF00',   4: '#00FFFF',   5: '#0000FF',
 317             6: '#FF00FF',   8: '#414141',   9: '#808080',  12: '#BD0000',  30: '#FF7F00',
 318           250: '#333333', 251: '#505050', 252: '#696969', 253: '#828282', 254: '#BEBEBE', 255: '#FFFFFF'}
 319
 320 parser = inkex.optparse.OptionParser(usage="usage: %prog [options] SVGfile", option_class=inkex.InkOption)
 321 parser.add_option("--auto", action="store", type="inkbool", dest="auto", default=True)
 322 parser.add_option("--scale", action="store", type="string", dest="scale", default="1.0")
 323 parser.add_option("--gcodetoolspoints", action="store", type="inkbool", dest="gcodetoolspoints", default=True)
 324 parser.add_option("--encoding", action="store", type="string", dest="input_encode", default="latin_1")
 325 parser.add_option("--font", action="store", type="string", dest="font", default="Arial")
 326 parser.add_option("--tab", action="store", type="string", dest="tab", default="Options")
 327 parser.add_option("--inputhelp", action="store", type="string", dest="inputhelp", default="")
 328 (options, args) = parser.parse_args(inkex.sys.argv[1:])
 329 doc = inkex.etree.parse(StringIO('<svg xmlns:sodipodi="http://sodipodi.sourceforge.net/DTD/sodipodi-0.dtd" width="%s" height="%s"></svg>' % (210*90/25.4, 297*90/25.4)))
 330 desc = inkex.etree.SubElement(doc.getroot(), 'desc', {})
 331 defs = inkex.etree.SubElement(doc.getroot(), 'defs', {})
 332 marker = inkex.etree.SubElement(defs, 'marker', {'id': 'DistanceX', 'orient': 'auto', 'refX': '0.0', 'refY': '0.0', 'style': 'overflow:visible'})
 333 inkex.etree.SubElement(marker, 'path', {'d': 'M 3,-3 L -3,3 M 0,-5 L  0,5', 'style': 'stroke:#000000; stroke-width:0.5'})
 334 pattern = inkex.etree.SubElement(defs, 'pattern', {'id': 'Hatch', 'patternUnits': 'userSpaceOnUse', 'width': '8', 'height': '8', 'x': '0', 'y': '0'})
 335 inkex.etree.SubElement(pattern, 'path', {'d': 'M8 4 l-4,4', 'stroke': '#000000', 'stroke-width': '0.25', 'linecap': 'square'})
 336 inkex.etree.SubElement(pattern, 'path', {'d': 'M6 2 l-4,4', 'stroke': '#000000', 'stroke-width': '0.25', 'linecap': 'square'})
 337 inkex.etree.SubElement(pattern, 'path', {'d': 'M4 0 l-4,4', 'stroke': '#000000', 'stroke-width': '0.25', 'linecap': 'square'})
 338 stream = open(args[0], 'r')
 339 xmax = xmin = 0.0
 340 ymax = 297.0                                        # default A4 height in mm
 341 line = get_line()
 342 flag = 0                                            # (0, 1, 2, 3) = (none, LAYER, LTYPE, DIMTXT)
 343 layer_colors = {}                                   # store colors by layer
 344 layer_nodes = {}                                    # store nodes by layer
 345 linetypes = {}                                      # store linetypes by name
 346 DIMTXT = {}                                         # store DIMENSION text sizes
 347
 348 while line[0] and line[1] != 'BLOCKS':
 349     line = get_line()
 350     if options.auto:
 351         if line[1] == '$EXTMIN':
 352             xmin = get_group('10')
 353         if line[1] == '$EXTMAX':
 354             xmax = get_group('10')
 355             ymax = get_group('20')
 356     if flag == 1 and line[0] == '2':
 357         layername = unicode(line[1], options.input_encode)
 358         attribs = {inkex.addNS('groupmode','inkscape'): 'layer', inkex.addNS('label','inkscape'): '%s' % layername}
 359         layer_nodes[layername] = inkex.etree.SubElement(doc.getroot(), 'g', attribs)
 360     if flag == 2 and line[0] == '2':
 361         linename = unicode(line[1], options.input_encode)
 362         linetypes[linename] = []
 363     if flag == 3 and line[0] == '2':
 364         stylename = unicode(line[1], options.input_encode)
 365     if line[0] == '2' and line[1] == 'LAYER':
 366         flag = 1
 367     if line[0] == '2' and line[1] == 'LTYPE':
 368         flag = 2
 369     if line[0] == '2' and line[1] == 'DIMSTYLE':
 370         flag = 3
 371     if flag == 1 and line[0] == '62':
 372         layer_colors[layername] = int(line[1])
 373     if flag == 2 and line[0] == '49':
 374         linetypes[linename].append(float(line[1]))
 375     if flag == 3 and line[0] == '140':
 376         DIMTXT[stylename] = float(line[1])
 377     if line[0] == '0' and line[1] == 'ENDTAB':
 378         flag = 0
 379
 380 if options.auto:
 381     scale = 1.0
 382     if xmax > xmin:
 383         scale = 210.0/(xmax - xmin)                 # scale to A4 width
 384 else:
 385     scale = float(options.scale)                    # manual scale factor
 386 desc.text = '%s - scale = %f' % (unicode(args[0], options.input_encode), scale)
 387 scale *= 90.0/25.4                                  # convert from mm to pixels
 388
 389 if not layer_nodes:
 390     attribs = {inkex.addNS('groupmode','inkscape'): 'layer', inkex.addNS('label','inkscape'): '0'}
 391     layer_nodes['0'] = inkex.etree.SubElement(doc.getroot(), 'g', attribs)
 392     layer_colors['0'] = 7
 393
 394 for linename in linetypes.keys():                   # scale the dashed lines
 395     linetype = ''
 396     for length in linetypes[linename]:
 397         if length == 0:                             # test for dot
 398             linetype += ' 0.5,'
 399         else:
 400             linetype += '%.4f,' % math.fabs(length*scale)
 401     if linetype == '':
 402         linetypes[linename] = 'stroke-linecap: round'
 403     else:
 404         linetypes[linename] = 'stroke-dasharray:' + linetype
 405
 406 entity = ''
 407 block = defs                                        # initiallize with dummy
 408 while line[0] and line[1] != 'DICTIONARY':
 409     line = get_line()
 410     if entity and groups.has_key(line[0]):
 411         seqs.append(line[0])                        # list of group codes
 412         if line[0] == '1' or line[0] == '2' or line[0] == '3' or line[0] == '6' or line[0] == '8':  # text value
 413             val = line[1].replace('\~', ' ')
 414             val = inkex.re.sub( '\\\\A.*;', '', val)
 415             val = inkex.re.sub( '\\\\H.*;', '', val)
 416             val = inkex.re.sub( '\\^I', '', val)
 417             val = inkex.re.sub( '{\\\\L', '', val)
 418             val = inkex.re.sub( '}', '', val)
 419             val = inkex.re.sub( '\\\\S.*;', '', val)
 420             val = inkex.re.sub( '\\\\W.*;', '', val)
 421             val = unicode(val, options.input_encode)
 422             val = val.encode('unicode_escape')
 423             val = inkex.re.sub( '\\\\\\\\U\+([0-9A-Fa-f]{4})', '\\u\\1', val)
 424             val = val.decode('unicode_escape')
 425         elif line[0] == '62' or line[0] == '70' or line[0] == '92' or line[0] == '93':
 426             val = int(line[1])
 427         elif line[0] == '10' or line[0] == '13' or line[0] == '14': # scaled float x value
 428             val = scale*(float(line[1]) - xmin)
 429         elif line[0] == '20' or line[0] == '23' or line[0] == '24': # scaled float y value
 430             val = - scale*(float(line[1]) - ymax)
 431         else:                                       # unscaled float value
 432             val = float(line[1])
 433         vals[groups[line[0]]].append(val)
 434     elif entities.has_key(line[1]):
 435         if entities.has_key(entity):
 436             if block != defs:                       # in a BLOCK
 437                 layer = block
 438             elif vals[groups['8']]:                 # use Common Layer Name
 439                 layer = layer_nodes[vals[groups['8']][0]]
 440             color = '#000000'                       # default color
 441             if vals[groups['8']]:
 442                 if layer_colors.has_key(vals[groups['8']][0]):
 443                     if colors.has_key(layer_colors[vals[groups['8']][0]]):
 444                         color = colors[layer_colors[vals[groups['8']][0]]]
 445             if vals[groups['62']]:                  # Common Color Number
 446                 if colors.has_key(vals[groups['62']][0]):
 447                     color = colors[vals[groups['62']][0]]
 448             style = simplestyle.formatStyle({'stroke': '%s' % color, 'fill': 'none'})
 449             w = 0.5                                 # default lineweight for POINT
 450             if vals[groups['370']]:                 # Common Lineweight
 451                 if vals[groups['370']][0] > 0:
 452                     w = 90.0/25.4*vals[groups['370']][0]/100.0
 453                     if w < 0.5:
 454                         w = 0.5
 455                     style = simplestyle.formatStyle({'stroke': '%s' % color, 'fill': 'none', 'stroke-width': '%.1f' % w})
 456             if vals[groups['6']]:                   # Common Linetype
 457                 if linetypes.has_key(vals[groups['6']][0]):
 458                     style += ';' + linetypes[vals[groups['6']][0]]
 459             if entities[entity]:
 460                 entities[entity]()
 461         entity = line[1]
 462         vals = [[],[],[],[],[],[],[],[],[],[],[],[],[],[],[],[],[],[],[],[],[],[],[],[],[]]
 463         seqs = []
 464
 465 doc.write(inkex.sys.stdout)
 466
 467 # vim: expandtab shiftwidth=4 tabstop=8 softtabstop=4 fileencoding=utf-8 textwidth=99