replace Mxx code

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FabioP
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New Member

05 Apr 2013 19:26 #32306 by FabioP

replace Mxx code was created by FabioP

Hi all,

I have a script code under "Filter" that works fine,

#!/usr/bin/env python
# gcode2ngc.py

import sys

# First line
print "%"

f = file(sys.argv[1])
for line in f:

# Change extruder axis name
line = line.replace(" E", " A")

# S -> P
line = line.replace(" S", " P")
# Comment T0 code
line = line.replace("T0", ";T0")

# Comment G28 code
line = line.replace("G28", ";G28")

# Comment M82 code
line = line.replace("M82", ";M82")

print line.strip()

# Last line
print "%"

but if I try to replace M101 to M3 or M106 to A50 don't work, any suggestions?

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BigJohnT
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05 Apr 2013 20:17 - 05 Apr 2013 20:27 #32307 by BigJohnT

Replied by BigJohnT on topic replace Mxx code

What is the python line of code you tried for M101?

What does the original line look like?

Edit: line = line.replace('M101','M1') will fail because it is not the same number of characters.

John

Last edit: 05 Apr 2013 20:27 by BigJohnT.

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ArcEye
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05 Apr 2013 21:07 - 05 Apr 2013 21:09 #32308 by ArcEye

Replied by ArcEye on topic replace Mxx code

You could just use sed

You don't have to use completely obfuscated patterns, just simple global substitution ones

$ sed -e 's/M101/M3/'g -e 's/M105/A50/'g -e 's/E/A/'g -e 's/S/P/'g -e 's/T0/;T0/'g -e 's/G28/;G28/'g -e 's/M82/;M82/'g in.ngc > out.ngc

regards

Last edit: 05 Apr 2013 21:09 by ArcEye.

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FabioP
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05 Apr 2013 22:42 #32311 by FabioP

Replied by FabioP on topic replace Mxx code

John, yes, original line was like this:

# Comment M101 code
line = line.replace("M101", "M3") and now understand because it is failed ! thanks.

ArcEye, I don't know sed,where I should put this code,thanks

Fabio

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ArcEye
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05 Apr 2013 23:23 - 07 Apr 2013 17:08 #32312 by ArcEye

Replied by ArcEye on topic replace Mxx code

ArcEye, I don't know sed,where I should put this code,thanks

It is a command-line program, run from a terminal. See man sed

If you wanted to run it in a script

# !/bin/bash

for j in *.nc
    {
    sed -i.bak -e 's/M101/M3/'g -e 's/M105/A50/'g -e 's/E/A/'g -e 's/S/P/'g -e 's/T0/;T0/'g -e 's/G28/;G28/'g -e 's/M82/;M82/'g $j
    name='basename $j .nc'
    mv $j $name.ngc	
    }

exit(0)

will convert all the .nc files in the current directory, making a backup of the original with extension .bak
and outputting a file with .ngc extension

You could convert into a filter, but not sure if there is a need, you only have to run it once and it is done.

regards

Last edit: 07 Apr 2013 17:08 by ArcEye. Reason: substitute j for i, to prevent any clash with sed -i switch

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