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- Committer: Oumar Aziz OUATTARA
- Date: 2008-05-01 13:13:00 UTC
- Revision ID: wattazoum@wattazoum-laptop-20080501131300-ghbw4d1xdv0j2xbg
Started crontab
- files modified:
- src/schedule/__init__.py
added
removed
src/schedule/crontab.py
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#custom modules
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import lang
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import config
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class Crontab:
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import calendar
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from datetime import datetime
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import Job, Scheduler
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class Crontab (Scheduler):
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"""
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The crontab manager class . It's designated to be instanciated for a certain user and group
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"""
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name = "crontab"
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def __init__(self,root,user,uid,gid):
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"""
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@param root: 0 if the user is not root, 1 otherwise
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self.set_rights(user,uid,gid)
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self.nooutputtag = ">/dev/null 2>&1"
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self.crontabRecordRegex = re.compile('([^\s]+)\s([^\s]+)\s([^\s]+)\s([^\s]+)\s([^\s]+)\s([^#\n$]*)(\s#\s([^\n$]*)|$)')
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self.crontabRecordRegex = 5*"([0-9]{,2}|\*) " + "([^ ]+?) " + "(.+?)( # ([0-9]+?);(.+);(.+))?$"
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self.timeranges = {
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"minute" : range(0,60),
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self.gid = gid
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def get_type (self):
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def getName (self):
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"""
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@return: the string "crontab"
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"""
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return "crontab"
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return self.name
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def checkfield (self, expr, type):
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"""
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self.__write__ ()
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def append (self, minute, hour, day, month, weekday, command, nooutput, title, icon = None):
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def append (self, job):
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"""
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The method to add an entry to crontab (see man 5 crontab )
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@param minute :
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@param hour:
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@param day:
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@param month:
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@param weekday:
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@param command: The command to execute
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@param nooutput: True if we don't want any output (False for normal behaviour)
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@param title: The title of the task (might be used for a search )
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@param icon: an icon path to associate
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@param job: The job to append
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"""
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record = minute + " " + hour + " " + day + " " + month + " " + weekday + " " + command
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if nooutput:
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space = " "
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if record[len(record)-1] == " ":
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space = ""
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record = record + space + self.nooutputtag
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if title != None and icon == None:
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record = record + " # " + title
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elif title != None and icon != None:
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record = record + " # " + title + ", " + icon
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elif title == None and icon != None:
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record = record + " # " + _("Untitled") + ", " + icon
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if not isinstance(job, Job):
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raise Exception ("job should be of type Job")
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d = job.date
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# set periodicity
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if job.periodicity == Scheduler.YEAR :
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record = "%d %d %d %d *" % (d.minute,d.hour,d.day, d.month )
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elif job.periodicity == Scheduler.MONTH :
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record = "%d %d %d * *" % (d.minute,d.hour,d.day )
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elif job.periodicity == Scheduler.WEEK :
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record = "%d %d * * %d" % (d.minute,d.hour,calendar.weekday(d.year, d.month, d.day)+1 )
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elif Job.periodicity == Scheduler.DAY :
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record = "%d %d * * *" % (d.minute,d.hour )
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elif Job.periodicity == Scheduler.HOUR :
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record = "%d * * * *" % (d.minute )
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else :
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record = "%d %d %d %d %d" % (d.minute,d.hour,d.day, d.month, calendar.weekday(d.year, d.month, d.day)+1 )
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record = record + " %s " % job.command
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record = record + " # %d;%s;%s" % (job.id, job.title, job.icon)
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self.lines.append (record)
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# TODO: let write trow an exception if failed
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self.__write__ ()
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def humanRead(self,title=None):
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"""
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"""
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min hour day month wday command comment/title-icon or end
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The regexp: ('([^\s]+)\s([^\s]+)\s([^\s]+)\s([^\s]+)\s([^\s]+)\s([^#\n$]*)(\s#\s([^\n$]*)|$)')
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A record: * * * * * echo $a >/dev/null 2>&1 # Untitled, /usr/share/icons/gnome/48x48/mimetypes/gnome-mime-application.png
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A record: * * * * * echo $a >/dev/null 2>&1 # 1;Untitled;/usr/share/icons/gnome/48x48/mimetypes/gnome-mime-application.png
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Parse a crontab line and return it as a tuple
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@param line: The crontab line
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@return: (minute, hour, day, month, weekday, command, title, icon) or None for empty line and comment
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@raise Exception: if the line is neither a comment nor empty and is invalid
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"""
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def getPeriodicity(line):
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yearlyRE = re.compile("([0-9]{,2}) ([0-9]{,2}) ([0-9]{,2}) ([0-9]{,2}) (\*) .+$")
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monthlyRE = re.compile("([0-9]{,2}) ([0-9]{,2}) ([0-9]{,2}) (\*) (\*) .+$")
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weeklyRE = re.compile("([0-9]{,2}) ([0-9]{,2}) (\*) (\*) ([0-9]{,2}) .+$")
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dailyRE = re.compile("([0-9]{,2}) ([0-9]{,2}) (\*) (\*) (\*) .+$")
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hourlyRE = re.compile("([0-9]{,2}) (\*) (\*) (\*) (\*) .+$")
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if yearlyRE.match(line) : return Scheduler.YEAR
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elif monthlyRE.match(line) : return Scheduler.MONTH
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elif weeklyRE.match(line) : return Scheduler.WEEK
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elif dailyRE.match(line) : return Scheduler.DAY
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elif hourlyRE.match(line) : return Scheduler.HOUR
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def convertToDatetime(srematch):
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now = datetime.today()
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#print m.groups()
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if srematch.group(1) == '*' :
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minute = now.minute
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else : minute = int(srematch.group (1))
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if srematch.group(2) == '*' :
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hour = now.hour
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else : hour = int(srematch.group (2))
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if srematch.group (3) == '*' :
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day = now.day
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else : day = int(srematch.group(3))
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if srematch.group (4) == '*' :
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month = now.month
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else : month = int(srematch.group(4))
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year = now.year
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if srematch.group (5) == '*' :
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weekday = calendar.weekday(year, month, day)
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else : weekday = int(srematch.group(5))
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return datetime(year,month,day,hour,minute)
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if len (line) > 1 and line[0] != '#':
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m = self.crontabRecordRegex.match(line)
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if m != None:
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#print m.groups()
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minute = m.groups ()[0]
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hour = m.groups ()[1]
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day = m.groups ()[2]
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month = m.groups ()[3]
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weekday = m.groups ()[4]
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command = m.groups ()[5]
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#icon path is in comment of the task, this is the default
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icon = None
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#title is in comment of the task
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title = None
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if m.groups ()[7] != None:
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# TODO: check if works
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lastpiece = m.groups ()[7]
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keep = lastpiece.split (", ")
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title = keep[0]
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if len (keep) > 1:
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icon = keep[1]
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if title == None:
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title = _("Untitled")
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return minute, hour, day, month, weekday, command, title, icon
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result = Job()
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result.date = convertToDatetime(m)
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# periodicity
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result.periodicity = self.__getPeriodicity(line)
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# User
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result.user = m.group(6)
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# Command
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result.command = m.group(7)
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# Job id
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result.id = m.group(9)
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# Title
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result.title = m.group(10)
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#icon path is in comment of the task, this is the default
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result.icon = m.group(11)
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return result
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else:
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raise Exception( _("ERROR: Failed to parse crontab record : [ %s ]") % line)
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return None
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def __easy__ (self, minute, hour, day, month, weekday):
Loggerhead is a web-based interface for Breezy
Version: 2.0.1