Hello, This has been a very productive week regarding uselect.
I'm still not doing any commits as uselect can still break your python
environment while testing and i don't have the time to learn how to
handle branches in git.
Status:
* Fully Converted all action types to new module syntax
* Infinite symlinking dependency fully working
* Runnable Actions now support dynamic usage showing
An example fully commented module follows
### Start of Module
#!/usr/bin/env python
# Copyright 1999-2009 Gentoo Foundation
# Distributed under the terms of the GNU General Public License v2
# python.py meph...@gmail.com
# (will explain .py instead of .uselect below)
# still lacking vim/emacs python line
from umodule import *
# We Create The Module
module = Module(name = "python", description = "Python Version
Switcher", version = "0.1", author ="meph...@gmail.com")
# We Create a Linking Action
action_bin = Action (name = 'bin', description = "Change Python's
Version", type = "sym")
# We Create a Link
link_python = Link(alias = "python", target = "/usr/bin/python", prefix
= "/usr/bin/", regexp = "python([0-9]+\.[0-9]+$)")
# We Create Another Link
link_python_config = Link(alias = "python-config", target =
"/usr/bin/python-config", prefix = "/usr/bin/", regexp =
"python([0-9]+\.[0-9]+)-config$")
# Make the link "python_config" depend of "link_python"
link_python.add_link(link_python_config)
# Add the link to the action
action_bin.add_link(python)
# Add the action to the module
module.add_action(action_bin)
# We create a simple runnable action that "tests" python environment
test = Action (name = 'test', description = 'Test Python Environment',
type = 'runnable')
# We add the parameters/arguments
test.add_parameter('<times>')
test.add_parameter('[<what>]')
# We add the usage code
test.add_usage("""#!/usr/bin/python
print "Python Test will echo <times> * <what>"
print "Usage can be multi-line Yay!"
print ""
for i in range(5):
print "Usage can have dynamic options! " + str(i)
""")
# We add the action code
test.add_code("""#!/usr/bin/python
import sys
def is_number(s):
try:
int(s)
return True
except ValueError:
return False
argv = sys.argv[1:]
times = sys.argv[1:][0]
if is_number(times):
times = int(times)
if len(argv) >= 2:
what = sys.argv[1:][1]
else:
what = 'Hello World...'
print str(what) * times
else:
print 'Invalid Option(s)'
exit(1)
exit(0)
""")
# We add the action to the module
module.add_action(test)
### End of Module
So... what's the output of this?
### Start Examples
* uselect
Usage: uselect <options> <module> <action>
Options:
-v (*) Verbose Mode
-nc (*) No Colors
-version (*) Version Information
Modules:
python (*) Python Version Switcher
gcc (*) Python GCC Version Switcher
* uselect python
Usage: uselect <options> python <action>
Module python:
Author: meph...@gmail.com Version: 0.1
Actions:
bin Change Python's Version
test Test Python Environment
* uselect python bin
Usage: uselect <options> python bin <target> ... <target>
Change Python's Version
0 - /usr/bin/python2.6 - (>)
1 - /usr/bin/python2.6-config - (>)
2 - /usr/bin/python2.5-config - (!)
3 - /usr/bin/python2.5 - (!)
4 - /usr/bin/python2.6-config - (>)
5 - /usr/bin/python2.5-config - (!)
* uselect python bin 2
Setting /usr/bin/python2.5-config success!
Setting /usr/bin/python2.6 success
* uselect python bin (again)
Usage: uselect <options> python bin <target> ... <target>
Change Python's Version
0 - /usr/bin/python2.6 - (>)
1 - /usr/bin/python2.6-config - (!)
2 - /usr/bin/python2.5-config - (>)
3 - /usr/bin/python2.5 - (!)
4 - /usr/bin/python2.6-config - (>)
5 - /usr/bin/python2.5-config - (!)
* uselect python test
Usage: uselect <options> python test <times> [<what>]
Test Python Environment
Python Test will echo <times> * <what>
Usage can be multi-line Yay!
Usage can have dynamic options! 0
Usage can have dynamic options! 1
Usage can have dynamic options! 2
Usage can have dynamic options! 3
Usage can have dynamic options! 4
* uselect python test 10 "yeah! "
yeahyeahyeahyeahyeahyeahyeahyeahyeahyeah
I guess this is all for the past week. Symlinking dependency really
cranked my brain and almost got me stuck.
Next steps:
* add the --system option for system-wide changes
* Implement env actions
* Structure folders ".uselect/" (probabily will have a bin folder and a
env.d folder)
* Start structuring uprofile application and api
* Profiles will be xml/json (and will use this part of code to uselect
too)
* Call for ideas
* Python gurus: Atm i'm retrieving the module from .uselect
files this way:
def get_modules(self):
self.modules = []
for module in filesystem.list_dir(modules_dir):
if re.match('__init__.py$', module):
continue
match = re.match('(.*).py$', module)
if match:
import modules
modname = match.group(1)
modpath = 'modules.'+ modname
__import__(modpath)
module = eval(modpath + '.module')
self.modules.append(module)
This is a bit ugly. Should there be a better way? I can't seem
to achieve one. This is the reason why new modules are still
called module.py and not module.uselect as should be.
* If you are a developer of any eselect modules or
something-config please reply with suggestions. All ideas are
welcome.
* Everyone else:
User profiles will stand in ~/.uselect
Folder Profiles will stand in $FOLDER/.uselect
What about group profiles?
Modules like bash-completion work in a "env.d" style. Should an
action type be created for actions like these (I believe they
are very common).
Well, all ideas are welcome again.
P.S: I have successfully passed the first midterm evaluation. Thanks to
everyone that has contributed to this new project, especially my mentor
Sébastien Fabbro (bicatali).
Cheers,
Sérgio
--
Sérgio Almeida - meph...@gmail.com
mephx @ freenode
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