Cura/util/profile.py

   1 from __future__ import absolute_import
   2 from __future__ import division
   3
   4 import os, traceback, math, re, zlib, base64, time, sys, platform, glob, string, stat
   5 import cPickle as pickle
   6 if sys.version_info[0] < 3:
   7         import ConfigParser
   8 else:
   9         import configparser as ConfigParser
  10
  11 from Cura.util import resources
  12 from Cura.util import version
  13
  14 #########################################################
  15 ## Default settings when none are found.
  16 #########################################################
  17
  18 #Single place to store the defaults, so we have a consistent set of default settings.
  19 profileDefaultSettings = {
  20         'nozzle_size': '0.4',
  21         'layer_height': '0.2',
  22         'wall_thickness': '0.8',
  23         'solid_layer_thickness': '0.6',
  24         'fill_density': '20',
  25         'skirt_line_count': '1',
  26         'skirt_gap': '3.0',
  27         'print_speed': '50',
  28         'print_temperature': '220',
  29         'print_bed_temperature': '70',
  30         'support': 'None',
  31         'filament_diameter': '2.89',
  32         'filament_density': '1.00',
  33         'retraction_min_travel': '5.0',
  34         'retraction_enable': 'False',
  35         'retraction_speed': '40.0',
  36         'retraction_amount': '4.5',
  37         'retraction_extra': '0.0',
  38         'retract_on_jumps_only': 'True',
  39         'travel_speed': '150',
  40         'max_z_speed': '3.0',
  41         'bottom_layer_speed': '20',
  42         'cool_min_layer_time': '5',
  43         'fan_enabled': 'True',
  44         'fan_layer': '1',
  45         'fan_speed': '100',
  46         'fan_speed_max': '100',
  47         'model_scale': '1.0',
  48         'flip_x': 'False',
  49         'flip_y': 'False',
  50         'flip_z': 'False',
  51         'swap_xz': 'False',
  52         'swap_yz': 'False',
  53         'model_rotate_base': '0',
  54         'model_multiply_x': '1',
  55         'model_multiply_y': '1',
  56         'extra_base_wall_thickness': '0.0',
  57         'sequence': 'Loops > Perimeter > Infill',
  58         'force_first_layer_sequence': 'True',
  59         'infill_type': 'Line',
  60         'solid_top': 'True',
  61         'fill_overlap': '15',
  62         'support_rate': '50',
  63         'support_distance': '0.5',
  64         'support_dual_extrusion': 'False',
  65         'joris': 'False',
  66         'enable_skin': 'False',
  67         'enable_raft': 'False',
  68         'cool_min_feedrate': '10',
  69         'bridge_speed': '100',
  70         'raft_margin': '5',
  71         'raft_base_material_amount': '100',
  72         'raft_interface_material_amount': '100',
  73         'bottom_thickness': '0.3',
  74         'hop_on_move': 'False',
  75         'plugin_config': '',
  76         'object_center_x': '-1',
  77         'object_center_y': '-1',
  78
  79         'add_start_end_gcode': 'True',
  80         'gcode_extension': 'gcode',
  81         'alternative_center': '',
  82         'clear_z': '0.0',
  83         'extruder': '0',
  84 }
  85 alterationDefault = {
  86 #######################################################################################
  87         'start.gcode': """;Sliced {filename} at: {day} {date} {time}
  88 ;Basic settings: Layer height: {layer_height} Walls: {wall_thickness} Fill: {fill_density}
  89 ;Print time: {print_time}
  90 ;Filament used: {filament_amount}m {filament_weight}g
  91 ;Filament cost: {filament_cost}
  92 G21        ;metric values
  93 G90        ;absolute positioning
  94 M107       ;start with the fan off
  95
  96 G28 X0 Y0  ;move X/Y to min endstops
  97 G28 Z0     ;move Z to min endstops
  98 G92 X0 Y0 Z0 E0         ;reset software position to front/left/z=0.0
  99
 100 G1 Z15.0 F{max_z_speed} ;move the platform down 15mm
 101
 102 G92 E0                  ;zero the extruded length
 103 G1 F200 E3              ;extrude 3mm of feed stock
 104 G92 E0                  ;zero the extruded length again
 105 G1 F{travel_speed}
 106 """,
 107 #######################################################################################
 108         'end.gcode': """;End GCode
 109 M104 S0                     ;extruder heater off
 110 M140 S0                     ;heated bed heater off (if you have it)
 111
 112 G91                                    ;relative positioning
 113 G1 E-1 F300                            ;retract the filament a bit before lifting the nozzle, to release some of the pressure
 114 G1 Z+0.5 E-5 X-20 Y-20 F{travel_speed} ;move Z up a bit and retract filament even more
 115 G28 X0 Y0                              ;move X/Y to min endstops, so the head is out of the way
 116
 117 M84                         ;steppers off
 118 G90                         ;absolute positioning
 119 """,
 120 #######################################################################################
 121         'support_start.gcode': '',
 122         'support_end.gcode': '',
 123         'cool_start.gcode': '',
 124         'cool_end.gcode': '',
 125         'replace.csv': '',
 126 #######################################################################################
 127         'nextobject.gcode': """;Move to next object on the platform. clear_z is the minimal z height we need to make sure we do not hit any objects.
 128 G92 E0
 129
 130 G91                                    ;relative positioning
 131 G1 E-1 F300                            ;retract the filament a bit before lifting the nozzle, to release some of the pressure
 132 G1 Z+0.5 E-5 F{travel_speed}           ;move Z up a bit and retract filament even more
 133 G90                                    ;absolute positioning
 134
 135 G1 Z{clear_z} F{max_z_speed}
 136 G92 E0
 137 G1 X{object_center_x} Y{object_center_x} F{travel_speed}
 138 G1 F200 E6
 139 G92 E0
 140 """,
 141 #######################################################################################
 142         'switchExtruder.gcode': """;Switch between the current extruder and the next extruder, when printing with multiple extruders.
 143 G92 E0
 144 G1 E-15 F5000
 145 G92 E0
 146 T{extruder}
 147 G1 E15 F5000
 148 G92 E0
 149 """,
 150 }
 151 preferencesDefaultSettings = {
 152         'startMode': 'Simple',
 153         'lastFile': os.path.normpath(os.path.join(os.path.dirname(os.path.abspath(__file__)), '..', 'example', 'UltimakerRobot_support.stl')),
 154         'machine_width': '205',
 155         'machine_depth': '205',
 156         'machine_height': '200',
 157         'machine_type': 'unknown',
 158         'ultimaker_extruder_upgrade': 'False',
 159         'has_heated_bed': 'False',
 160         'extruder_amount': '1',
 161         'extruder_offset_x1': '-22.0',
 162         'extruder_offset_y1': '0.0',
 163         'extruder_offset_x2': '0.0',
 164         'extruder_offset_y2': '0.0',
 165         'extruder_offset_x3': '0.0',
 166         'extruder_offset_y3': '0.0',
 167         'filament_density': '1300',
 168         'steps_per_e': '0',
 169         'serial_port': 'AUTO',
 170         'serial_port_auto': '',
 171         'serial_baud': 'AUTO',
 172         'serial_baud_auto': '',
 173         'slicer': 'Cura (Skeinforge based)',
 174         'save_profile': 'False',
 175         'filament_cost_kg': '0',
 176         'filament_cost_meter': '0',
 177         'sdpath': '',
 178         'sdshortnames': 'True',
 179
 180         'extruder_head_size_min_x': '70.0',
 181         'extruder_head_size_min_y': '18.0',
 182         'extruder_head_size_max_x': '18.0',
 183         'extruder_head_size_max_y': '35.0',
 184         'extruder_head_size_height': '80.0',
 185
 186         'model_colour': '#72CB30',
 187         'model_colour2': '#CB3030',
 188         'model_colour3': '#DDD93C',
 189         'model_colour4': '#4550D3',
 190 }
 191
 192 #########################################################
 193 ## Profile and preferences functions
 194 #########################################################
 195
 196 ## Profile functions
 197 def getDefaultProfilePath():
 198         if platform.system() == "Windows":
 199                 basePath = os.path.normpath(os.path.join(os.path.dirname(os.path.abspath(__file__)), ".."))
 200                 #If we have a frozen python install, we need to step out of the library.zip
 201                 if hasattr(sys, 'frozen'):
 202                         basePath = os.path.normpath(os.path.join(basePath, ".."))
 203         else:
 204                 basePath = os.path.expanduser('~/.cura/%s' % version.getVersion(False))
 205         if not os.path.isdir(basePath):
 206                 os.makedirs(basePath)
 207         return os.path.join(basePath, 'current_profile.ini')
 208
 209 def loadGlobalProfile(filename):
 210         #Read a configuration file as global config
 211         global globalProfileParser
 212         globalProfileParser = ConfigParser.ConfigParser()
 213         globalProfileParser.read(filename)
 214
 215 def resetGlobalProfile():
 216         #Read a configuration file as global config
 217         global globalProfileParser
 218         globalProfileParser = ConfigParser.ConfigParser()
 219
 220         if getPreference('machine_type') == 'ultimaker':
 221                 putProfileSetting('nozzle_size', '0.4')
 222                 if getPreference('ultimaker_extruder_upgrade') == 'True':
 223                         putProfileSetting('retraction_enable', 'True')
 224         else:
 225                 putProfileSetting('nozzle_size', '0.5')
 226
 227 def saveGlobalProfile(filename):
 228         #Save the current profile to an ini file
 229         globalProfileParser.write(open(filename, 'w'))
 230
 231 def loadGlobalProfileFromString(options):
 232         global globalProfileParser
 233         globalProfileParser = ConfigParser.ConfigParser()
 234         globalProfileParser.add_section('profile')
 235         globalProfileParser.add_section('alterations')
 236         options = base64.b64decode(options)
 237         options = zlib.decompress(options)
 238         (profileOpts, alt) = options.split('\f', 1)
 239         for option in profileOpts.split('\b'):
 240                 if len(option) > 0:
 241                         (key, value) = option.split('=', 1)
 242                         globalProfileParser.set('profile', key, value)
 243         for option in alt.split('\b'):
 244                 if len(option) > 0:
 245                         (key, value) = option.split('=', 1)
 246                         globalProfileParser.set('alterations', key, value)
 247
 248 def getGlobalProfileString():
 249         global globalProfileParser
 250         if not globals().has_key('globalProfileParser'):
 251                 loadGlobalProfile(getDefaultProfilePath())
 252
 253         p = []
 254         alt = []
 255         tempDone = []
 256         if globalProfileParser.has_section('profile'):
 257                 for key in globalProfileParser.options('profile'):
 258                         if key in tempOverride:
 259                                 p.append(key + "=" + tempOverride[key])
 260                                 tempDone.append(key)
 261                         else:
 262                                 p.append(key + "=" + globalProfileParser.get('profile', key))
 263         if globalProfileParser.has_section('alterations'):
 264                 for key in globalProfileParser.options('alterations'):
 265                         if key in tempOverride:
 266                                 p.append(key + "=" + tempOverride[key])
 267                                 tempDone.append(key)
 268                         else:
 269                                 alt.append(key + "=" + globalProfileParser.get('alterations', key))
 270         for key in tempOverride:
 271                 if key not in tempDone:
 272                         p.append(key + "=" + tempOverride[key])
 273         ret = '\b'.join(p) + '\f' + '\b'.join(alt)
 274         ret = base64.b64encode(zlib.compress(ret, 9))
 275         return ret
 276
 277 def getProfileSetting(name):
 278         if name in tempOverride:
 279                 return unicode(tempOverride[name], "utf-8")
 280         #Check if we have a configuration file loaded, else load the default.
 281         if not globals().has_key('globalProfileParser'):
 282                 loadGlobalProfile(getDefaultProfilePath())
 283         if not globalProfileParser.has_option('profile', name):
 284                 if name in profileDefaultSettings:
 285                         default = profileDefaultSettings[name]
 286                 else:
 287                         print("Missing default setting for: '" + name + "'")
 288                         profileDefaultSettings[name] = ''
 289                         default = ''
 290                 if not globalProfileParser.has_section('profile'):
 291                         globalProfileParser.add_section('profile')
 292                 globalProfileParser.set('profile', name, str(default))
 293                 #print(name + " not found in profile, so using default: " + str(default))
 294                 return default
 295         return globalProfileParser.get('profile', name)
 296
 297 def getProfileSettingFloat(name):
 298         try:
 299                 setting = getProfileSetting(name).replace(',', '.')
 300                 return float(eval(setting, {}, {}))
 301         except (ValueError, SyntaxError, TypeError):
 302                 return 0.0
 303
 304 def putProfileSetting(name, value):
 305         #Check if we have a configuration file loaded, else load the default.
 306         if not globals().has_key('globalProfileParser'):
 307                 loadGlobalProfile(getDefaultProfilePath())
 308         if not globalProfileParser.has_section('profile'):
 309                 globalProfileParser.add_section('profile')
 310         globalProfileParser.set('profile', name, str(value))
 311
 312 def isProfileSetting(name):
 313         if name in profileDefaultSettings:
 314                 return True
 315         return False
 316
 317 ## Preferences functions
 318 global globalPreferenceParser
 319 globalPreferenceParser = None
 320
 321 def getPreferencePath():
 322         if platform.system() == "Windows":
 323                 basePath = os.path.normpath(os.path.join(os.path.dirname(os.path.abspath(__file__)), ".."))
 324                 #If we have a frozen python install, we need to step out of the library.zip
 325                 if hasattr(sys, 'frozen'):
 326                         basePath = os.path.normpath(os.path.join(basePath, ".."))
 327         else:
 328                 basePath = os.path.expanduser('~/.cura/%s' % version.getVersion(False))
 329         if not os.path.isdir(basePath):
 330                 os.makedirs(basePath)
 331         return os.path.join(basePath, 'preferences.ini')
 332
 333 def getPreferenceFloat(name):
 334         try:
 335                 setting = getPreference(name).replace(',', '.')
 336                 return float(eval(setting, {}, {}))
 337         except (ValueError, SyntaxError, TypeError):
 338                 return 0.0
 339
 340 def getPreferenceColour(name):
 341         colorString = getPreference(name)
 342         return [float(int(colorString[1:3], 16)) / 255, float(int(colorString[3:5], 16)) / 255, float(int(colorString[5:7], 16)) / 255, 1.0]
 343
 344 def getPreference(name):
 345         if name in tempOverride:
 346                 return unicode(tempOverride[name])
 347         global globalPreferenceParser
 348         if globalPreferenceParser == None:
 349                 globalPreferenceParser = ConfigParser.ConfigParser()
 350                 globalPreferenceParser.read(getPreferencePath())
 351         if not globalPreferenceParser.has_option('preference', name):
 352                 if name in preferencesDefaultSettings:
 353                         default = preferencesDefaultSettings[name]
 354                 else:
 355                         print("Missing default setting for: '" + name + "'")
 356                         preferencesDefaultSettings[name] = ''
 357                         default = ''
 358                 if not globalPreferenceParser.has_section('preference'):
 359                         globalPreferenceParser.add_section('preference')
 360                 globalPreferenceParser.set('preference', name, str(default))
 361                 #print(name + " not found in preferences, so using default: " + str(default))
 362                 return default
 363         return unicode(globalPreferenceParser.get('preference', name), "utf-8")
 364
 365 def putPreference(name, value):
 366         #Check if we have a configuration file loaded, else load the default.
 367         global globalPreferenceParser
 368         if globalPreferenceParser == None:
 369                 globalPreferenceParser = ConfigParser.ConfigParser()
 370                 globalPreferenceParser.read(getPreferencePath())
 371         if not globalPreferenceParser.has_section('preference'):
 372                 globalPreferenceParser.add_section('preference')
 373         globalPreferenceParser.set('preference', name, unicode(value).encode("utf-8"))
 374         globalPreferenceParser.write(open(getPreferencePath(), 'w'))
 375
 376 def isPreference(name):
 377         if name in preferencesDefaultSettings:
 378                 return True
 379         return False
 380
 381 ## Temp overrides for multi-extruder slicing and the project planner.
 382 tempOverride = {}
 383 def setTempOverride(name, value):
 384         tempOverride[name] = unicode(value).encode("utf-8")
 385 def clearTempOverride(name):
 386         del tempOverride[name]
 387 def resetTempOverride():
 388         tempOverride.clear()
 389
 390 #########################################################
 391 ## Utility functions to calculate common profile values
 392 #########################################################
 393 def calculateEdgeWidth():
 394         wallThickness = getProfileSettingFloat('wall_thickness')
 395         nozzleSize = getProfileSettingFloat('nozzle_size')
 396
 397         if wallThickness < nozzleSize:
 398                 return wallThickness
 399
 400         lineCount = int(wallThickness / nozzleSize)
 401         lineWidth = wallThickness / lineCount
 402         lineWidthAlt = wallThickness / (lineCount + 1)
 403         if lineWidth > nozzleSize * 1.5:
 404                 return lineWidthAlt
 405         return lineWidth
 406
 407 def calculateLineCount():
 408         wallThickness = getProfileSettingFloat('wall_thickness')
 409         nozzleSize = getProfileSettingFloat('nozzle_size')
 410
 411         if wallThickness < nozzleSize:
 412                 return 1
 413
 414         lineCount = int(wallThickness / nozzleSize + 0.0001)
 415         lineWidth = wallThickness / lineCount
 416         lineWidthAlt = wallThickness / (lineCount + 1)
 417         if lineWidth > nozzleSize * 1.5:
 418                 return lineCount + 1
 419         return lineCount
 420
 421 def calculateSolidLayerCount():
 422         layerHeight = getProfileSettingFloat('layer_height')
 423         solidThickness = getProfileSettingFloat('solid_layer_thickness')
 424         return int(math.ceil(solidThickness / layerHeight - 0.0001))
 425
 426 #########################################################
 427 ## Alteration file functions
 428 #########################################################
 429 def replaceTagMatch(m):
 430         pre = m.group(1)
 431         tag = m.group(2)
 432         if tag == 'time':
 433                 return pre + time.strftime('%H:%M:%S').encode('utf-8', 'replace')
 434         if tag == 'date':
 435                 return pre + time.strftime('%d %b %Y').encode('utf-8', 'replace')
 436         if tag == 'day':
 437                 return pre + time.strftime('%a').encode('utf-8', 'replace')
 438         if tag == 'print_time':
 439                 return pre + '#P_TIME#'
 440         if tag == 'filament_amount':
 441                 return pre + '#F_AMNT#'
 442         if tag == 'filament_weight':
 443                 return pre + '#F_WGHT#'
 444         if tag == 'filament_cost':
 445                 return pre + '#F_COST#'
 446         if pre == 'F' and tag in ['print_speed', 'retraction_speed', 'travel_speed', 'max_z_speed', 'bottom_layer_speed', 'cool_min_feedrate']:
 447                 f = getProfileSettingFloat(tag) * 60
 448         elif isProfileSetting(tag):
 449                 f = getProfileSettingFloat(tag)
 450         elif isPreference(tag):
 451                 f = getProfileSettingFloat(tag)
 452         else:
 453                 return '%s?%s?' % (pre, tag)
 454         if (f % 1) == 0:
 455                 return pre + str(int(f))
 456         return pre + str(f)
 457
 458 def replaceGCodeTags(filename, gcodeInt):
 459         f = open(filename, 'r+')
 460         data = f.read(2048)
 461         data = data.replace('#P_TIME#', ('%5d:%02d' % (int(gcodeInt.totalMoveTimeMinute / 60), int(gcodeInt.totalMoveTimeMinute % 60)))[-8:])
 462         data = data.replace('#F_AMNT#', ('%8.2f' % (gcodeInt.extrusionAmount / 1000))[-8:])
 463         data = data.replace('#F_WGHT#', ('%8.2f' % (gcodeInt.calculateWeight() * 1000))[-8:])
 464         cost = gcodeInt.calculateCost()
 465         if cost == False:
 466                 cost = 'Unknown'
 467         data = data.replace('#F_COST#', ('%8s' % (cost.split(' ')[0]))[-8:])
 468         f.seek(0)
 469         f.write(data)
 470         f.close()
 471
 472 ### Get aleration raw contents. (Used internally in Cura)
 473 def getAlterationFile(filename):
 474         #Check if we have a configuration file loaded, else load the default.
 475         if not globals().has_key('globalProfileParser'):
 476                 loadGlobalProfile(getDefaultProfilePath())
 477
 478         if not globalProfileParser.has_option('alterations', filename):
 479                 if filename in alterationDefault:
 480                         default = alterationDefault[filename]
 481                 else:
 482                         print("Missing default alteration for: '" + filename + "'")
 483                         alterationDefault[filename] = ''
 484                         default = ''
 485                 if not globalProfileParser.has_section('alterations'):
 486                         globalProfileParser.add_section('alterations')
 487                 #print("Using default for: %s" % (filename))
 488                 globalProfileParser.set('alterations', filename, default)
 489         return unicode(globalProfileParser.get('alterations', filename), "utf-8")
 490
 491 def setAlterationFile(filename, value):
 492         #Check if we have a configuration file loaded, else load the default.
 493         if not globals().has_key('globalProfileParser'):
 494                 loadGlobalProfile(getDefaultProfilePath())
 495         if not globalProfileParser.has_section('alterations'):
 496                 globalProfileParser.add_section('alterations')
 497         globalProfileParser.set('alterations', filename, value.encode("utf-8"))
 498         saveGlobalProfile(getDefaultProfilePath())
 499
 500 ### Get the alteration file for output. (Used by Skeinforge)
 501 def getAlterationFileContents(filename):
 502         prefix = ''
 503         postfix = ''
 504         alterationContents = getAlterationFile(filename)
 505         if filename == 'start.gcode':
 506                 #For the start code, hack the temperature and the steps per E value into it. So the temperature is reached before the start code extrusion.
 507                 #We also set our steps per E here, if configured.
 508                 eSteps = getPreferenceFloat('steps_per_e')
 509                 if eSteps > 0:
 510                         prefix += 'M92 E%f\n' % (eSteps)
 511                 temp = getProfileSettingFloat('print_temperature')
 512                 bedTemp = 0
 513                 if getPreference('has_heated_bed') == 'True':
 514                         bedTemp = getProfileSettingFloat('print_bed_temperature')
 515
 516                 if bedTemp > 0 and not '{print_bed_temperature}' in alterationContents:
 517                         prefix += 'M140 S%f\n' % (bedTemp)
 518                 if temp > 0 and not '{print_temperature}' in alterationContents:
 519                         prefix += 'M109 S%f\n' % (temp)
 520                 if bedTemp > 0 and not '{print_bed_temperature}' in alterationContents:
 521                         prefix += 'M190 S%f\n' % (bedTemp)
 522         elif filename == 'end.gcode':
 523                 #Append the profile string to the end of the GCode, so we can load it from the GCode file later.
 524                 postfix = ';CURA_PROFILE_STRING:%s\n' % (getGlobalProfileString())
 525         elif filename == 'replace.csv':
 526                 #Always remove the extruder on/off M codes. These are no longer needed in 5D printing.
 527                 prefix = 'M101\nM103\n'
 528         elif filename == 'support_start.gcode' or filename == 'support_end.gcode':
 529                 #Add support start/end code
 530                 if getProfileSetting('support_dual_extrusion') == 'True' and int(getPreference('extruder_amount')) > 1:
 531                         if filename == 'support_start.gcode':
 532                                 setTempOverride('extruder', '1')
 533                         else:
 534                                 setTempOverride('extruder', '0')
 535                         alterationContents = getAlterationFileContents('switchExtruder.gcode')
 536                         clearTempOverride('extruder')
 537                 else:
 538                         alterationContents = ''
 539         return unicode(prefix + re.sub("(.)\{([^\}]*)\}", replaceTagMatch, alterationContents).rstrip() + '\n' + postfix).strip().encode('utf-8')
 540
 541 ###### PLUGIN #####
 542
 543 def getPluginConfig():
 544         try:
 545                 return pickle.loads(getProfileSetting('plugin_config'))
 546         except:
 547                 return []
 548
 549 def setPluginConfig(config):
 550         putProfileSetting('plugin_config', pickle.dumps(config))
 551
 552 def getPluginBasePaths():
 553         ret = []
 554         if platform.system() != "Windows":
 555                 ret.append(os.path.expanduser('~/.cura/plugins/'))
 556         if platform.system() == "Darwin" and hasattr(sys, 'frozen'):
 557                 ret.append(os.path.normpath(os.path.join(resources.resourceBasePath, "Cura/plugins")))
 558         else:
 559                 ret.append(os.path.normpath(os.path.join(os.path.dirname(os.path.abspath(__file__)), '..', 'plugins')))
 560         return ret
 561
 562 def getPluginList():
 563         ret = []
 564         for basePath in getPluginBasePaths():
 565                 for filename in glob.glob(os.path.join(basePath, '*.py')):
 566                         filename = os.path.basename(filename)
 567                         if filename.startswith('_'):
 568                                 continue
 569                         with open(os.path.join(basePath, filename), "r") as f:
 570                                 item = {'filename': filename, 'name': None, 'info': None, 'type': None, 'params': []}
 571                                 for line in f:
 572                                         line = line.strip()
 573                                         if not line.startswith('#'):
 574                                                 break
 575                                         line = line[1:].split(':', 1)
 576                                         if len(line) != 2:
 577                                                 continue
 578                                         if line[0].upper() == 'NAME':
 579                                                 item['name'] = line[1].strip()
 580                                         elif line[0].upper() == 'INFO':
 581                                                 item['info'] = line[1].strip()
 582                                         elif line[0].upper() == 'TYPE':
 583                                                 item['type'] = line[1].strip()
 584                                         elif line[0].upper() == 'DEPEND':
 585                                                 pass
 586                                         elif line[0].upper() == 'PARAM':
 587                                                 m = re.match('([a-zA-Z]*)\(([a-zA-Z_]*)(?::([^\)]*))?\) +(.*)', line[1].strip())
 588                                                 if m is not None:
 589                                                         item['params'].append({'name': m.group(1), 'type': m.group(2), 'default': m.group(3), 'description': m.group(4)})
 590                                         else:
 591                                                 print "Unknown item in effect meta data: %s %s" % (line[0], line[1])
 592                                 if item['name'] != None and item['type'] == 'postprocess':
 593                                         ret.append(item)
 594         return ret
 595
 596 def runPostProcessingPlugins(gcodefilename):
 597         pluginConfigList = getPluginConfig()
 598         pluginList = getPluginList()
 599
 600         for pluginConfig in pluginConfigList:
 601                 plugin = None
 602                 for pluginTest in pluginList:
 603                         if pluginTest['filename'] == pluginConfig['filename']:
 604                                 plugin = pluginTest
 605                 if plugin is None:
 606                         continue
 607
 608                 pythonFile = None
 609                 for basePath in getPluginBasePaths():
 610                         testFilename = os.path.join(basePath, pluginConfig['filename'])
 611                         if os.path.isfile(testFilename):
 612                                 pythonFile = testFilename
 613                 if pythonFile is None:
 614                         continue
 615
 616                 locals = {'filename': gcodefilename}
 617                 for param in plugin['params']:
 618                         value = param['default']
 619                         if param['name'] in pluginConfig['params']:
 620                                 value = pluginConfig['params'][param['name']]
 621
 622                         if param['type'] == 'float':
 623                                 try:
 624                                         value = float(value)
 625                                 except:
 626                                         value = float(param['default'])
 627
 628                         locals[param['name']] = value
 629                 try:
 630                         execfile(pythonFile, locals)
 631                 except:
 632                         locationInfo = traceback.extract_tb(sys.exc_info()[2])[-1]
 633                         return "%s: '%s' @ %s:%s:%d" % (str(sys.exc_info()[0].__name__), str(sys.exc_info()[1]), os.path.basename(locationInfo[0]), locationInfo[2], locationInfo[1])
 634         return None
 635
 636 def getSDcardDrives():
 637         drives = ['']
 638         if platform.system() == "Windows":
 639                 from ctypes import windll
 640                 bitmask = windll.kernel32.GetLogicalDrives()
 641                 for letter in string.uppercase:
 642                         if bitmask & 1:
 643                                 drives.append(letter + ':/')
 644                         bitmask >>= 1
 645         if platform.system() == "Darwin":
 646                 drives = []
 647                 for volume in glob.glob('/Volumes/*'):
 648                         if stat.S_ISLNK(os.lstat(volume).st_mode):
 649                                 continue
 650                         drives.append(volume)
 651         return drives