When dia starts, files in python dir are "de facto" executed (or at least in
my tests).
But, as you will see, there is not a clean way to run a dia python script
from command line (or i dont know how).
I made a little test script, it is linux oriented.
- copy text and paste in file "~/.dia/example.py"
- i assume that the dia file to be processed by script is
"/tmp/mydiagram.dia"
Here comes the dirty code
import dia
# this line, in interactive mode, generates
# WARNING **: Can't find list for recent-files when adding
/tmp/mydiagram.dia
# but seems to work
dia.load("/tmp/mydiagram.dia")
# open a file for some output
tmpfile = open("/tmp/mytmpfile", "a")
tmpfile.write("hello world from dia\n")
# this line doesn't work and breaks the script
#tmpfile.write("found diagrams " + len(dia.diagrams()) + "\n")
# notice that diagram file passed in command line is not loaded
# when this code is executed
tmpfile.write("loaded diagram " + str(dia.diagrams()[0].filename) +
"\n")
# this line doesn't work too and breaks the script
#tmpfile.write("num layers " + len(dia.diagrams()[0].data.layers) +
"\n")
tmpfile.write("first layer name " +
str(dia.diagrams()[0].data.layers[0].name))
tmpfile.close()
After that, there is a more dirty way to answer Martin's question.
You can run the script non interactively with this dirty command line
$ dia -e /tmp/filetodelete.dia -t dia emptydiagram.dia
"emptydiagram.dia" can be any valid dia file, it will not be used by
example.py script (not visible in script when it is executed).
"/tmp/filetodelete.dia" can be removed when command ends, it is necessary
for executing dia in export mode from command line without GUI.
"-t dia" again this parameter is just for not executing Dia wit GUI.
When dia is launched (with or without GUI) the script example.py is executed
and with dia python class other diagram files can be loaded.
In my script i just check the name of first layer in diagram file containing
data to be processed, dont know if accessing shapes in diagram works but it
can be easily tested.
Notice that when script example.py is executed, any diagram file passed as
parameter is not still loaded or accessible by dia python class (or at least
in my test).
Here comes the need to load the diagram with your data directly in
example.py script (this can be parametrized with some little python coding
and environment variables or temporary files or what your hackitude can
imagine)
I know the code is dirty and the solution is quite a trick.
A cleaner solution but not using Dia program or dia python plugin is a good
xml parser and XPath. Martin, If you really need something like that, i made
a php lib for accessing dia files: it is on launchpad, it is open source but
1/3 of the documentation is not in english (workin on it). Send me an email
for more info, i dont think this is the place to advertise my work.
Hope to be useful and sorry for bad english
Carlo
2010/6/16 W. Martin Borgert <[email protected]>
> Quoting "Carlo Calderoni" <[email protected]>:
>
>> You can write python scripts and put them in "~/.dia/python" directory.
>> You
>> can call them via dia python console or map them in dia menu entries.
>>
>
> Btw, is there a way to execute a Python plugin from the command line?
> Assume, I have a diagram showing the structure of a local network,
> and all servers have their name in the diagram. A Python script
> could extract the names and list them, for example. Is it possible
> to do that without using the Dia GUI? TIA.
>
> _______________________________________________
> dia-list mailing list
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> FAQ at http://live.gnome.org/Dia/Faq
> Main page at http://live.gnome.org/Dia
>
>
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