#!/usr/bin/python
"""
This page is in the table of contents.
==Overview==
===Introduction===
Skeinforge is a GPL tool chain to forge a gcode skein for a model.

The tool chain starts with carve, which carves the model into layers, then the layers are modified by other tools in turn like fill, comb, tower, raft, stretch, hop, wipe, fillet & export.  Each tool automatically gets the gcode from the previous tool.  So if you want a carved & filled gcode, call the fill tool and it will call carve, then it will fill and output the gcode.  If you want to use all the tools, call export and it will call in turn all the other tools down the chain to produce the gcode file.

If you do not want a tool after preface to modify the output, deselect the Activate checkbox for that tool.  When the Activate checkbox is off, the tool will just hand off the gcode to the next tool without modifying it.

The skeinforge module provides a single place to call up all the setting dialogs.  When the 'Skeinforge' button is clicked, skeinforge calls export, since that is the end of the chain.

The plugin buttons which are commonly used are bolded and the ones which are rarely used have normal font weight.

There are also tools which handle settings for the chain, like polyfile.

The analyze tool calls plugins in the analyze_plugins folder, which will analyze the gcode in some way when it is generated if their Activate checkbox is selected.

The interpret tool accesses and displays the import plugins.

The default settings are similar to those on Nophead's machine.  A setting which is often different is the 'Layer Thickness' in carve.

===Alternative===
Another way to make gcode for a model is to use the Java RepRap host program, described at:
http://reprap.org/wiki/Installing_RepRap_on_your_computer

===Contribute===
You can contribute by helping develop the manual at:
http://www.bitsfrombytes.com/wiki/index.php?title=Skeinforge

There is also a forum thread about how to contribute to skeinforge development at:
http://dev.forums.reprap.org/read.php?12,27562

I will only reply to emails from contributors or to complete bug reports.

===Documentation===
There is a manual at:
http://www.bitsfrombytes.com/wiki/index.php?title=Skeinforge

There is also documentation is in the documentation folder, in the doc strings for each module and it can be called from the '?' button or the menu or by clicking F1 in each setting dialog.

A list of other tutorials is at:
http://www.bitsfrombytes.com/wiki/index.php?title=Skeinforge#Tutorials

===Fabrication===
To fabricate a model with gcode and the Arduino you can use the send.py in the fabricate folder.  The documentation for it is in the folder as send.html and at:
http://reprap.org/bin/view/Main/ArduinoSend

Another way is to use an EMC2 or similar computer controlled milling machine, as described in the "ECM2 based repstrap" forum thread at:
http://forums.reprap.org/read.php?1,12143

using the M-Apps package, which is at:
http://forums.reprap.org/file.php?1,file=772

Another way is to use Zach's ReplicatorG at:
http://replicat.org/

There is also an older Processing script at:
http://reprap.svn.sourceforge.net/viewvc/reprap/trunk/users/hoeken/arduino/GCode_Host/

Yet another way is to use the reprap host, written in Java, to load and print gcode:
http://dev.www.reprap.org/bin/view/Main/DriverSoftware#Load_GCode

For jogging, the Metalab group wrote their own exerciser, also in Processing:
http://reprap.svn.sourceforge.net/viewvc/reprap/trunk/users/metalab/processing/GCode_Exerciser/

The Metalab group has descriptions of skeinforge in action and their adventures are described at:
http://reprap.soup.io/

There is a board about printing issues at:
http://www.bitsfrombytes.com/fora/user/index.php?board=5.0

You can buy the Rapman (an improved Darwin) from Bits from Bytes at:
http://www.bitsfrombytes.com/

You can buy the Makerbot from Makerbot Industries at:
http://www.makerbot.com/

===File Formats===
An explanation of the gcodes is at:
http://reprap.org/bin/view/Main/Arduino_GCode_Interpreter

and at:
http://reprap.org/bin/view/Main/MCodeReference

A gode example is at:
http://forums.reprap.org/file.php?12,file=565

The settings are saved as tab separated .csv files in the .skeinforge folder in your home directory.  The settings can be set in the tool dialogs.  The .csv files can also be edited with a text editor or a spreadsheet program set to separate tabs.

The Scalable Vector Graphics file produced by vectorwrite can be opened by an SVG viewer or an SVG capable browser like Mozilla:
http://www.mozilla.com/firefox/

A good triangle surface format is the GNU Triangulated Surface format, which is supported by Mesh Viewer and described at:
http://gts.sourceforge.net/reference/gts-surfaces.html#GTS-SURFACE-WRITE

You can export GTS files from Art of Illusion with the Export GNU Triangulated Surface.bsh script in the Art of Illusion Scripts folder.

STL is an inferior triangle surface format, described at:
http://en.wikipedia.org/wiki/STL_(file_format)

If you're using an STL file and you can't even carve it, try converting it to a GNU Triangulated Surface file in Art of Illusion.  If it still doesn't carve, then follow the advice in the troubleshooting section.

===Getting Skeinforge===
The latest version is at:
http://members.axion.net/~enrique/reprap_python_beanshell.zip

a sometimes out of date version is in the last reprap_python_beanshell.zip attachment in the last post of the Fabmetheus blog at:
http://fabmetheus.blogspot.com/

another sometimes out of date version is at:
https://reprap.svn.sourceforge.net/svnroot/reprap/trunk/reprap/miscellaneous/python-beanshell-scripts/

===Getting Started===
For skeinforge to run, install python 2.x on your machine, which is available from:
http://www.python.org/download/

To use the settings dialog you'll also need Tkinter, which probably came with the python installation.  If it did not, look for it at:
http://www.tcl.tk/software/tcltk/

If you want python and Tkinter together on MacOS, you can try:
http://www.astro.washington.edu/users/rowen/ROPackage/Overview.html

If you want python and Tkinter together on all platforms and don't mind filling out forms, you can try the ActivePython package from Active State at:
http://www.activestate.com/Products/activepython/feature_list.mhtml

The computation intensive python modules will use psyco if it is available and run about twice as fast.  Psyco is described at:
http://psyco.sourceforge.net/index.html

The psyco download page is:
http://psyco.sourceforge.net/download.html

Skeinforge imports Stereolithography (.stl) files or GNU Triangulated Surface (.gts) files.  If importing an STL file directly doesn't work, an indirect way to import an STL file is by turning it into a GTS file is by using the Export GNU Triangulated Surface script at:
http://members.axion.net/~enrique/Export%20GNU%20Triangulated%20Surface.bsh

The Export GNU Triangulated Surface script is also in the Art of Illusion folder, which is in the same folder as skeinforge.py.  To bring the script into Art of Illusion, drop it into the folder ArtOfIllusion/Scripts/Tools/.  Then import the STL file using the STL import plugin in the import submenu of the Art of Illusion file menu.  Then from the Scripts submenu in the Tools menu, choose 'Export GNU Triangulated Surface' and select the imported STL shape.  Click the 'Export Selected' checkbox and click OK. Once you've created the GTS file, you can turn it into gcode by typing in a shell in the same folder as skeinforge:
> python skeinforge.py

When the skeinforge dialog pops up, click 'Skeinforge', choose the file which you exported in 'Export GNU Triangulated Surface' and the gcode file will be saved with the suffix '_export.gcode'.

Or you can turn files into gcode by adding the file name, for example:
> python skeinforge.py Screw Holder Bottom.stl

===Motto===
I may be slow, but I get there in the end.

===Troubleshooting===
If there's a bug, try downloading the very latest version because skeinforge is often updated without an announcement.

If there is still a bug, then first prepare the following files:

1. stl file
2. pictures explaining the problem
3. your settings (pack the whole .skeinforge directory with all your settings) 

Then zip all the files.

Second, write a description of the error, send the description and the archive to the developer, enrique ( perez_enrique AT yahoo.com.removethispart ). After a bug fix is released, test the new version and report the results to enrique, whether the fix was successful or not.

If the dialog window is too big for the screen, on most Linux window managers you can move a window by holding down the Alt key and then drag the window with the left mouse button to get to the off screen widgets.

If you can't use the graphical interface, you can change the settings for skeinforge by using a text editor or spreadsheet to change the settings in the profiles folder in the .skeinforge folder in your home directory.

Comments and suggestions are welcome, however, I won't reply unless you are a contributor because developing takes all my time and as of the time of this writing I have at least three years of features to implement.

I will only answer your questions if you contribute to skeinforge in some way.  Some ways of contributing to skeinforge are in the contributions thread at:
http://dev.forums.reprap.org/read.php?12,27562

I reserve the right to make any correspondence public.  Do not send me any correspondence marked confidential.  If you do I will delete it.


==Examples==
The following examples forge the STL file Screw Holder.stl.  The examples are run in a terminal in the folder which contains Screw Holder.gts and skeinforge.py.

> python skeinforge.py
This brings up the dialog, after clicking 'Skeinforge', the following is printed:
The exported file is saved as Screw Holder_export.gcode


> python skeinforge.py Screw Holder.stl
The exported file is saved as Screw Holder_export.gcode


> python
Python 2.5.1 (r251:54863, Sep 22 2007, 01:43:31)
[GCC 4.2.1 (SUSE Linux)] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> import skeinforge
>>> skeinforge.writeOutput('Screw Holder.stl')
The exported file is saved as Screw Holder_export.gcode


>>> skeinforge.main()
This brings up the skeinforge dialog.


To run only fill for example, type in the skeinforge_plugins folder which fill is in:
> python fill.py

"""

from __future__ import absolute_import
import __init__

from fabmetheus_utilities.fabmetheus_tools import fabmetheus_interpret
from fabmetheus_utilities import archive
from fabmetheus_utilities import euclidean
from fabmetheus_utilities import gcodec
from fabmetheus_utilities import settings
from fabmetheus_utilities import archive
from skeinforge_application.skeinforge_utilities import skeinforge_craft
from skeinforge_application.skeinforge_utilities import skeinforge_polyfile
from skeinforge_application.skeinforge_utilities import skeinforge_profile
from optparse import OptionParser
import os
import sys


# scale xy z
# iso svg
# set derivations to lathe form
# gear separated diagonally, center distance
# linear bearing
# mirror axis center & origin, concatenate
# matrixTetragrid to tetragrid, matrix.transform, target
# maybe matrix array form a00 a01.. also
# matrix rotate around axis http://en.wikibooks.org/wiki/OpenSCAD_User_Manual/Transformations
# lathe, transform normal in getRemaining, getConnection
# grate separate
# xml_creation
# class, pymethe
# fill rename shortenedSegmentList gridSegmentList and delete comments
# array paths, follow paths, later maybe targetequation radius xyz give index
# writeTagged, tags, creationTags, writeMatrix='true'
# connectionfrom, to, connect, xaxis
# add overview link to crnsdoo index and svg page
# bound.bottom to cube, sphere, cylinder input, maybe mesh., bound.bottom & left & right & top for xy plane
# look over copy module, make copy solid like copy lineation
# document gear script
# stretch add back addAlong
#
# maybe in svgReader if loop intersection with previous union else add
#
# unimportant
# minor outline problem when an end path goes through a path, like in the letter A
# view profile 1 mm thickness
# svg inskcape layer label, import into inskscape in general
# only parse svg once, do not parse again if yAxisPointingUpward="true"
#
# close, getPillarByLoopLists, addConcave, polymorph original graph section, loop, add step object, add continuous object
# del previous, add begin & end if far  get actual path
# polling
# getNormal, getIsFlat?
# write svg for visible paths???
# combine xmlelement with csvelement using example.csv & geometry.csv, csv _format, _column, _row, _text
# getConnection of some kind like getConnectionVertexes, getConnection
# import module, overwriteRoot
# pixel, voxel, surfaxel/boxel, lattice, mesh
# probably not replace getOverlapRatio with getOverlap if getOverlapRatio is never small, always 0.0
# probably not speed up CircleIntersection by performing isWithinCircles before creation
# equation for vertexes if not already
# mesh. for cube, then cyliner, then sphere after lathe
# probably not move alterations and profiles
# tube
# rotor
# test translate
# lathe
# think about setActualMinimumZ in boolean_geometry
# pyramid
# round extrusion ?, fillet
# manipulate solid, maybe manipulate around elements
# hollow top
# boolean loop corner outset
# dovetail
# creationID, addObject, getTarget, copyXMLElement?
# maybe not getNewObject, getNew, addToBoolean
# work out close and radius
# maybe try to get rid of comment if possible
# voronoi average location intersection looped inset intercircles
# maybe move and give geometryOutput to cube, cylinder, sphere
#
# comb -> maybe add back running jump look at outside loops only for jump, find closest points, find slightly away inside points, link
# global simplify pathBetween
# comb documentation
#
# maybe move widen before bottom
# maybe save all generated_files option
# maybe meta overhang
# convert global repository settings to local settings
# table to dictionary
# check for last existing then remove unneeded fill code (getLastExistingFillLoops) from euclidean
# remove cool set at end of layer
# add fan on when hot in chamber
# maybe measuring rod
# remove comments from clip, bend
# winding into coiling, coil into wind & weave
# later, precision
# documentation
# http://wiki.makerbot.com/configuring-skeinforge
#
#
# add hook _extrusion
# implement acceleration & collinear removal in penultimate viewers _extrusion
# integral thin width _extrusion
# layer color, for multilayer start http://reprap.org/pub/Main/MultipleMaterialsFiles/legend.xml _extrusion
# maybe double height shells option _extrusion
# raft triple layer base, middle interface with hot loop or ties
# somehow, add pattern to outside, http://blog.makerbot.com/2010/09/03/lampshades/
#
# arch, ceiling
# add polish, has perimeter, has cut first layer (False)
# probably not set addedLocation in distanceFeedRate after arc move
# maybe horizontal bridging and/or check to see if the ends are standing on anything
# thin self? check when removing intersecting paths in inset
# maybe later remove isPerimeterPathInSurroundLoops, once there are no weird fill bugs, also change getHorizontalSegmentListsFromLoopLists
# save all analyze viewers of the same name except itself, update help menu self.wikiManualPrimary.setUpdateFunction
# check alterations folder first, if there is something copy it to the home directory, if not check the home directory
# set temperature in temperature
# move alterations and profiles to top level
#
#
#
# help primary menu item refresh
# add plugin help menu, add craft below menu
# give option of saving when switching profiles
# xml & svg more forgiving, svg make defaults for layerThickness, maxZ, minZ, add layer z to svg_template, make the slider on the template track even when mouse is outside
# option of surrounding lines in display
# maybe add connecting line in display line
# maybe check inset loops to see if they are smaller, but this would be slow
# maybe status bar
# maybe measurement ruler mouse tool
# search rss from blogs, add search links for common materials, combine created on or progress bar with searchable help
# boundaries, center radius z bottom top, circular or rectangular, polygon, put cool minimum radius orbits within boundaries
# move & rotate model
# possible jitter bug http://cpwebste.blogspot.com/2010/04/hydras-first-print.html
# trial, meta in a grid settings
# maybe svg slice format
# maybe interpret svg_convex_mesh
#laminate tool head
#maybe use 5x5 radius search in circle node
#maybe add layer updates in behold, skeinlayer and maybe others
#lathe winding, extrusion and cutting; synonym for rotation or turning, loop angle
# maybe split into source code and documentation sections
# transform plugins, start with sarrus http://www.thingiverse.com/thing:1425
# maybe make setting backups
# maybe settings in gcode or saved versions
# move skeinforge_utilities to fabmetheus_utilities
# maybe lathe cutting
# maybe lathe extrusion
# maybe lathe millng
# maybe lathe winding & weaving
#
#
#
# pick and place
# search items, search links, choice entry field
# svg triangle mesh, svg polygon mesh
# simulate
#transform
#extrude loops I guess make circles? and/or run along sparse infill
#custom inclined plane, inclined plane from model, screw, fillet travel as well maybe
# probably not stretch single isLoop
#maybe much afterwards make congajure multistep view
#maybe stripe although model colors alone can handle it
#stretch fiber around shape, maybe modify winding for asymmetric shapes
#multiple heads around edge
#maybe add full underscored date name for version
#maybe add rarely used tool option
#angle shape for overhang extrusions
#maybe m111? countdown
#common tool
#first time tool tip
#individual tool tip to place in text
# maybe try to simplify raft layer start
# maybe make temp directory
# maybe carve aoi xml testing and check xml gcode
# maybe cross hatch support polishing???
# maybe print svg view from current layer or zero layer in single view
# maybe check if tower is picking the nearest island
# maybe combine skein classes in fillet
# maybe isometric svg option

#Manual
#10,990
#11,1776,786
#12,3304,1528
#1,4960,1656
#2, 7077,2117
#3, 9598,2521
#4 12014,2305
#5 14319,2536
#6 16855,3226
#7 20081, 2189
#8 22270, 2625
#9 24895, 2967, 98
#10 27862, 3433, 110
#11 31295
#85 jan7, 86jan11, 87 jan13, 88 jan15, 91 jan21, 92 jan23, 95 jan30, 98 feb6
#make one piece electromagnet spool
#stepper rotor with ceramic disk magnet in middle, electromagnet with long thin spool line?
#stepper motor
#make plastic coated thread in vat with pulley
#tensile stuart platform
#kayak
#gear vacuum pump
#gear turbine
#heat engine
#solar power
#sailboat
#yacht
#house
#condo with reflected gardens in between buildings
#medical equipment
#cell counter, etc..
#pipe clamp lathe
# square tube driller & cutter

# archihedrongagglevoteindexium
# outline images
# look from top of intersection circle plane to look for next, add a node; tree out until all are stepped on then connect, when more than three intersections are close
# when loading a file, we should have a preview of the part and orientation in space
# second (and most important in my opinion) would be the ability to rotate the part on X/Y/Z axis to chose it's orientation
# third, a routine to detect the largest face and orient the part accordingly. Mat http://reprap.kumy.net/
# concept, three perpendicular slices to get display spheres
# extend lines around short segment after cross hatched boolean
# concept, teslocracy or citizendium; donation, postponement, rotate ad network, cached search options
# concept, local ad server, every time the program runs it changes the iamge which all the documentation points to from a pool of ads
# concept, join cross slices, go from vertex to two orthogonal edges, then from edges to each other, if not to a common point, then simplify polygons by removing points which do not change the area much
# concept, each node is fourfold, use sorted intersectionindexes to find close, connect each double sided edge, don't overlap more than two triangles on an edge
# concept, diamond cross section loops
# concept, in file, store polygon mesh and centers
# concept, display spheres or polygons would have original triangle for work plane
# .. then again no point with slices
# concept, filled slices, about 2 mm thick
# concept, rgb color triangle switch to get inside color, color golden ratio on 5:11 slope with a modulo 3 face
# concept, interlaced bricks at corners ( length proportional to corner angle )
# concept, new links to archi, import links to archi and adds skeinforge tool menu item, back on skeinforge named execute tool is added
# concept, trnsnt
# concept, indexium expand condense remove, single text, pymetheus
# concept, inscribed key silencer
# concept, spreadsheet to python and/or javascript
# concept, blog, frequent updates, mix associated news
# concept, range voting for posters, informative, complainer, funny, insightful, rude, spammer, literacy,  troll?
# concept, intermittent cloud with multiple hash functions
# concept, demodiu xml articles


__author__ = 'Enrique Perez (perez_enrique@yahoo.com)'
__credits__ = """
Adrian Bowyer <http://forums.reprap.org/profile.php?12,13>
Brendan Erwin <http://forums.reprap.org/profile.php?12,217>
Greenarrow <http://forums.reprap.org/profile.php?12,81>
Ian England <http://forums.reprap.org/profile.php?12,192>
John Gilmore <http://forums.reprap.org/profile.php?12,364>
Jonwise <http://forums.reprap.org/profile.php?12,716>
Kyle Corbitt <http://forums.reprap.org/profile.php?12,90>
Michael Duffin <http://forums.reprap.org/profile.php?12,930>
Marius Kintel <http://reprap.soup.io/>
Nophead <http://www.blogger.com/profile/12801535866788103677>
PJR <http://forums.reprap.org/profile.php?12,757>
Reece.Arnott <http://forums.reprap.org/profile.php?12,152>
Wade <http://forums.reprap.org/profile.php?12,489>
Xsainnz <http://forums.reprap.org/profile.php?12,563>
Zach Hoeken <http://blog.zachhoeken.com/>

Organizations:
Art of Illusion <http://www.artofillusion.org/>"""
__date__ = "$Date: 2008/21/11 $"
__license__ = 'GPL 3.0'


def addToProfileMenu( profileSelection, profileType, repository ):
	"Add a profile menu."
	pluginFileNames = skeinforge_profile.getPluginFileNames()
	craftTypeName = skeinforge_profile.getCraftTypeName()
	pluginModule = skeinforge_profile.getCraftTypePluginModule()
	profilePluginSettings = settings.getReadRepository( pluginModule.getNewRepository() )
	for pluginFileName in pluginFileNames:
		skeinforge_profile.ProfileTypeMenuRadio().getFromMenuButtonDisplay( profileType, pluginFileName, repository, craftTypeName == pluginFileName )
	for profileName in profilePluginSettings.profileList.value:
		skeinforge_profile.ProfileSelectionMenuRadio().getFromMenuButtonDisplay( profileSelection, profileName, repository, profileName == profilePluginSettings.profileListbox.value )

def getPluginsDirectoryPath():
	"Get the plugins directory path."
	return archive.getAbsoluteFrozenFolderPath( __file__, 'skeinforge_plugins')

def getPluginFileNames():
	"Get analyze plugin fileNames."
	return archive.getPluginFileNamesFromDirectoryPath( getPluginsDirectoryPath() )

def getNewRepository():
	"Get the repository constructor."
	return SkeinforgeRepository()

def getRadioPluginsAddPluginGroupFrame( directoryPath, importantFileNames, names, repository ):
	"Get the radio plugins and add the plugin frame."
	repository.pluginGroupFrame = settings.PluginGroupFrame()
	radioPlugins = []
	for name in names:
		radioPlugin = settings.RadioPlugin().getFromRadio( name in importantFileNames, repository.pluginGroupFrame.latentStringVar, name, repository, name == importantFileNames[0] )
		radioPlugin.updateFunction = repository.pluginGroupFrame.update
		radioPlugins.append( radioPlugin )
	defaultRadioButton = settings.getSelectedRadioPlugin( importantFileNames + [ radioPlugins[0].name ], radioPlugins )
	repository.pluginGroupFrame.getFromPath( defaultRadioButton, directoryPath, repository )
	return radioPlugins

def writeOutput(fileName):
	"Craft a gcode file."
	skeinforge_craft.writeOutput(fileName)


class SkeinforgeRepository:
	"A class to handle the skeinforge settings."
	def __init__(self):
		"Set the default settings, execute title & settings fileName."
		settings.addListsToRepository('skeinforge_application.skeinforge.html', None, self )
		self.fileNameInput = settings.FileNameInput().getFromFileName( fabmetheus_interpret.getGNUTranslatorGcodeFileTypeTuples(), 'Open File for Skeinforge', self, '')
		self.profileType = settings.MenuButtonDisplay().getFromName('Profile Type: ', self )
		self.profileSelection = settings.MenuButtonDisplay().getFromName('Profile Selection: ', self )
		addToProfileMenu( self.profileSelection, self.profileType, self )
		settings.LabelDisplay().getFromName('Search:', self )
		reprapSearch = settings.HelpPage().getFromNameAfterHTTP('members.axion.net/~enrique/search_reprap.html', 'Reprap', self )
		skeinforgeSearch = settings.HelpPage().getFromNameAfterHTTP('members.axion.net/~enrique/search_skeinforge.html', 'Skeinforge', self )
		skeinforgeSearch.column += 2
		webSearch = settings.HelpPage().getFromNameAfterHTTP('members.axion.net/~enrique/search_web.html', 'Web', self )
		webSearch.column += 4
		versionText = archive.getFileText( archive.getVersionFileName() )
		self.version = settings.LabelDisplay().getFromName('Version: ' + versionText, self )
		settings.LabelDisplay().getFromName('', self )
		importantFileNames = ['craft', 'profile']
		getRadioPluginsAddPluginGroupFrame( getPluginsDirectoryPath(), importantFileNames, getPluginFileNames(), self )
		self.executeTitle = 'Skeinforge'

	def execute(self):
		"Skeinforge button has been clicked."
		fileNames = skeinforge_polyfile.getFileOrDirectoryTypesUnmodifiedGcode(self.fileNameInput.value, fabmetheus_interpret.getImportPluginFileNames(), self.fileNameInput.wasCancelled)
		for fileName in fileNames:
			writeOutput(fileName)

	def save(self):
		"Profile has been saved and profile menu should be updated."
		self.profileType.removeMenus()
		self.profileSelection.removeMenus()
		addToProfileMenu( self.profileSelection, self.profileType, self )
		self.profileType.addRadiosToDialog( self.repositoryDialog )
		self.profileSelection.addRadiosToDialog( self.repositoryDialog )


def main():
	"Display the skeinforge dialog."
	parser = OptionParser()
	parser.add_option("-p", "--prefdir", help="set path to preference directory",
		action="store", type="string", dest="preferencesDirectory")
	parser.add_option("-s", "--start", help="set start file to use",
		action="store", type="string", dest="startFile")
	parser.add_option("-e", "--end", help="set end file to use",
		action="store", type="string", dest="endFile")
	parser.add_option("-o", "--option", 
		help='set an individual option in the format "module:preference=value"',
		action="append", type="string", dest="preferences")

	(options, args) = parser.parse_args()
	defaultStart = 'start.txt'
	defaultEnd = 'end.txt'
	if options.preferencesDirectory:
		pdir = options.preferencesDirectory;
		archive.setSettingsPath(pdir)
	if options.preferences:
		for prefSpec in options.preferences:
			(moduleName,prefSpec) = prefSpec.split(":",1)
			(prefName,valueName) = prefSpec.split("=",1)
			settings.addPreferenceOverride(moduleName,prefName,valueName)

	sys.argv = [sys.argv[0]] + args
	if len( args ) > 0:
		writeOutput( ' '.join(args) )
	else:
		settings.startMainLoopFromConstructor( getNewRepository() )

if __name__ == "__main__":
	main()
