lordwelch/comictagger
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Used RE to make sure duplicate doesn't get added to path

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git-svn-id: http://comictagger.googlecode.com/svn/trunk@471 6c5673fe-1810-88d6-992b-cd32ca31540c
This commit is contained in:
beville@gmail.com 2013-02-08 22:04:56 +00:00
parent 74a374d46b
commit 2e290c4c74
1 changed files with 11 additions and 4 deletions
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15
comictaggerlib/utils.py
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@ -21,6 +21,7 @@ limitations under the License.
"""
import os
import re
def listToString( l ):
string = ""
@ -31,10 +32,16 @@ def listToString( l ):
string += item
return string
def addtopath( dir ):
# TODO only add if not there already
if dir is not None and dir != "":
os.environ['PATH'] = dir + os.pathsep + os.environ['PATH']
def addtopath( dirname ):
if dirname is not None and dirname != "":
# verify that path doesn't already contain the given dirname
tmpdirname = re.escape(dirname)
pattern = r"{sep}{dir}$|^{dir}{sep}|{sep}{dir}{sep}|^{dir}$".format( dir=tmpdirname, sep=os.pathsep)
match = re.search(pattern, os.environ['PATH'])
if not match:
os.environ['PATH'] = dirname + os.pathsep + os.environ['PATH']
# returns executable path, if it exists
def which(program):