|
|
# -*- coding: utf-8 -*-
|
|
|
""" IPython extension: add %rehashdir magic
|
|
|
|
|
|
Usage:
|
|
|
|
|
|
%rehashdir c:/bin c:/tools
|
|
|
- Add all executables under c:/bin and c:/tools to alias table, in
|
|
|
order to make them directly executable from any directory.
|
|
|
|
|
|
This also serves as an example on how to extend ipython
|
|
|
with new magic functions.
|
|
|
|
|
|
Unlike rest of ipython, this requires Python 2.4 (optional
|
|
|
extensions are allowed to do that).
|
|
|
|
|
|
"""
|
|
|
|
|
|
import IPython.ipapi
|
|
|
ip = IPython.ipapi.get()
|
|
|
|
|
|
|
|
|
import os,re,fnmatch
|
|
|
|
|
|
def rehashdir_f(self,arg):
|
|
|
""" Add executables in all specified dirs to alias table
|
|
|
|
|
|
Usage:
|
|
|
|
|
|
%rehashdir c:/bin;c:/tools
|
|
|
- Add all executables under c:/bin and c:/tools to alias table, in
|
|
|
order to make them directly executable from any directory.
|
|
|
|
|
|
Without arguments, add all executables in current directory.
|
|
|
|
|
|
"""
|
|
|
|
|
|
# most of the code copied from Magic.magic_rehashx
|
|
|
|
|
|
def isjunk(fname):
|
|
|
junk = ['*~']
|
|
|
for j in junk:
|
|
|
if fnmatch.fnmatch(fname, j):
|
|
|
return True
|
|
|
return False
|
|
|
|
|
|
created = []
|
|
|
if not arg:
|
|
|
arg = '.'
|
|
|
path = map(os.path.abspath,arg.split(';'))
|
|
|
alias_table = self.shell.alias_table
|
|
|
|
|
|
if os.name == 'posix':
|
|
|
isexec = lambda fname:os.path.isfile(fname) and \
|
|
|
os.access(fname,os.X_OK)
|
|
|
else:
|
|
|
|
|
|
try:
|
|
|
winext = os.environ['pathext'].replace(';','|').replace('.','')
|
|
|
except KeyError:
|
|
|
winext = 'exe|com|bat|py'
|
|
|
if 'py' not in winext:
|
|
|
winext += '|py'
|
|
|
|
|
|
execre = re.compile(r'(.*)\.(%s)$' % winext,re.IGNORECASE)
|
|
|
isexec = lambda fname:os.path.isfile(fname) and execre.match(fname)
|
|
|
savedir = os.getcwd()
|
|
|
try:
|
|
|
# write the whole loop for posix/Windows so we don't have an if in
|
|
|
# the innermost part
|
|
|
if os.name == 'posix':
|
|
|
for pdir in path:
|
|
|
os.chdir(pdir)
|
|
|
for ff in os.listdir(pdir):
|
|
|
if isexec(ff) and not isjunk(ff):
|
|
|
# each entry in the alias table must be (N,name),
|
|
|
# where N is the number of positional arguments of the
|
|
|
# alias.
|
|
|
src,tgt = os.path.splitext(ff)[0], os.path.abspath(ff)
|
|
|
created.append(src)
|
|
|
alias_table[src] = (0,tgt)
|
|
|
else:
|
|
|
for pdir in path:
|
|
|
os.chdir(pdir)
|
|
|
for ff in os.listdir(pdir):
|
|
|
if isexec(ff) and not isjunk(ff):
|
|
|
src, tgt = execre.sub(r'\1',ff), os.path.abspath(ff)
|
|
|
src = src.lower()
|
|
|
created.append(src)
|
|
|
alias_table[src] = (0,tgt)
|
|
|
# Make sure the alias table doesn't contain keywords or builtins
|
|
|
self.shell.alias_table_validate()
|
|
|
# Call again init_auto_alias() so we get 'rm -i' and other
|
|
|
# modified aliases since %rehashx will probably clobber them
|
|
|
# self.shell.init_auto_alias()
|
|
|
finally:
|
|
|
os.chdir(savedir)
|
|
|
return created
|
|
|
ip.expose_magic("rehashdir",rehashdir_f)
|
|
|
|
