172 lines
4.4 KiB
Python
172 lines
4.4 KiB
Python
#!/usr/bin/env python
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# encoding: utf-8
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# $Id$
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# $URL$
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"""
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Tools.py
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Created by Marcus Stoegbauer on 2013-01-12.
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Copyright (c) 2013 __MyCompanyName__. All rights reserved.
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"""
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import sys
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import os
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import cfgfile
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import re
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import time
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import shutil
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import itertools
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class Debug(object):
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verbose = 0
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def __init__(self, verbose=0):
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self.setverbose(verbose)
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# def __init__
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def setverbose(self, verbose):
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"""docstring for setverbose"""
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self.verbose = verbose
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# def setverbose
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def debug(self, out, level=0):
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"""docstring for debug"""
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if self.verbose:
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if level > 0:
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print "*"*level,out
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else:
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print out
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# if verbose
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# def debug
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# class Debug
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def error(out):
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"""Print error on stderr"""
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print >> sys.stderr, str(out)+"\n"
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# def error
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def getConfig(filename):
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"""reads filename as config, checks for DEST parameter and returns cfgfile object"""
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ret = None
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try:
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ret = cfgfile.Conf(filename)
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except:
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error("Error reading config file %s" % filename)
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return False
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# try
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# check for DEST parameter
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if not ret.check("Main", "dest"):
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error("No DEST in config file %s" % filename)
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return False
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# if no DEST
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# replace $HOME with real home directory
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if ret.get("Main", "dest") == "$HOME":
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ret.set("Main", "dest", os.environ['HOME'])
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# if $HOME
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# make sure DEST ends with /
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if not ret.get("Main", "dest").endswith("/"):
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ret.set("Main", "dest", ret.get("Main", "dest")+"/")
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# if not /
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return ret
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# def getConfig
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def read_skip_comment(fp, commentstring):
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"""Read line from filehandle fp and skip all empty (whitespace) lines and lines starting with commentstring
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"""
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for line in fp:
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line = line[:-1]
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if (commentstring != "" and not re.match("^"+re.escape(commentstring), line)) and line !="" and not re.match("^\s+$", line):
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yield line
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# if not match
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# for line
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# def read_skip_comment
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def diff(destfile, tempfile, commentstring, debug):
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"""diff destfile and tempfile, returns True if files differ, False if they are the same"""
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debug.debug("Diffing %s and %s" % (destfile, tempfile))
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if not os.path.isfile(destfile):
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debug.debug("Destfile %s does not exist, returning True." % destfile)
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# destfile does not exist -> copy tempfile over
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return True
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# if not destfile
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if not os.path.isfile(tempfile):
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# tempfile does not exist, this should never happen
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error("Temporary file %s does not exist, this should not happen." % tempfile)
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sys.exit(1)
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# if not tempfile
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fp1 = open(tempfile)
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fp2 = open(destfile)
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for line1, line2 in itertools.izip(read_skip_comment(fp1, commentstring), read_skip_comment(fp2, commentstring)):
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if line1 != line2:
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fp1.close()
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fp2.close()
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return True
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# if differ
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# for line
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fp1.close()
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fp2.close()
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return False
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# def diff
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def userConfigGenerated(filename, cfg):
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"""returns True if filename has been generated by userconfig, False else"""
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if not os.path.isfile(filename):
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# filename does not exist, so it was not generated by userconfig
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return False
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# if not filename
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if not cfg.check("Main","stamp"):
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# no STAMP in userconfig.cfg, so no way to check if file was generated by userconfig
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return False
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# no STAMP
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fp = open(filename, "r")
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for line in fp:
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if re.search(re.escape(cfg.get("Main","stamp")), line):
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return True
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# if search
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# for line
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return False
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# def userConfigGenerated
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def backupFile(filename, debug):
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"""make backup of filename, returns True if backup is successful, False else"""
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if os.path.isfile(filename):
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backupname = filename+".userconfig."+time.strftime("%F")
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testbackupname = backupname
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counter = 0
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while os.path.isfile(testbackupname):
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counter+=1
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testbackupname=backupname+"."+str(counter)
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# while
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debug.debug("Renaming %s to %s" % (filename, testbackupname))
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os.rename(filename, testbackupname)
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return True
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# if filename
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return False
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# def backupFile
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def copyFile(sourcefile, destfile, debug):
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"""copy sourcefile to destfile, returns True if successful, False else"""
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if os.path.isfile(sourcefile):
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# sourcefile exists
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if not os.path.isfile(destfile) or os.access(destfile, os.W_OK):
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debug.debug("Copying %s to %s" % (sourcefile, destfile))
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shutil.copy(sourcefile, destfile)
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return True
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# destfile is writable
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# if write ok
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return False
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# def copyFile
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