[mythtv-users] Rename a file problems

[David Crawford]

On 10 February 2012 18:27, David Crawford <davidcrawford83 at gmail.com> wrote:

>
>
> On 10 February 2012 18:00, David Crawford <davidcrawford83 at gmail.com>wrote:
>
>>
>>
>> On 10 February 2012 15:49, David Crawford <davidcrawford83 at gmail.com>wrote:
>>
>>>
>>>
>>> On 10 February 2012 15:44, David Crawford <davidcrawford83 at gmail.com>wrote:
>>>
>>>>
>>>>
>>>> On 10 February 2012 15:36, Raymond Wagner <raymond at wagnerrp.com> wrote:
>>>>
>>>>> On 2/10/2012 09:12, David Crawford wrote:
>>>>> > path = '%cn %cc %cN.srt'
>>>>>
>>>>> Doing this in Python means you've stored that string to the variable
>>>>> 'path'.  Now in Python, everything is object, and objects have methods.
>>>>> In this particular case, you want to use the 'replace' method, which
>>>>> replaces one string with another, and outputs the result.  That is
>>>>> this...
>>>>>
>>>>> >     path = path.replace('%'+tag, tmp)
>>>>>
>>>>> In Python, strings are 'mutable', meaning they cannot be changed.  The
>>>>> only way to modify the string stored to a variable is to store a new
>>>>> string to that variable, as described above.  Except you don't want
>>>>> that
>>>>> path string up there.  You want to use this one defined lower...
>>>>>
>>>>> > '%m-%d_%H-%i-%s_%cN_%T'
>>>>>
>>>>> So define that to a variable, and replace whatever the bindings can't
>>>>> handle.  That's what this does down here.
>>>>>
>>>>> > for (tag, data) in (('cn',
>>>>> 'channum'),('cc','callsign'),('cN','name')):
>>>>> >     tmp = unicode(chan[data]).replace('/','-')
>>>>> >     path = path.replace('%'+tag, tmp)
>>>>>
>>>>> It loops through those three sets of values, setting 'tag' to 'cn', and
>>>>> 'data' to 'channum' on the first pass.  The Channel class is configured
>>>>> to imitate a dictionary, or map, or associative array, depending on
>>>>> your
>>>>> programming language of preference.  When it pulls 'chan[data]', it is
>>>>> pulling the value mapped to the string currently stored in the 'data'
>>>>> variable, which is 'channum', out of that associative array.
>>>>>
>>>>> Now you're only trying to use %cN, so there is no need for this
>>>>> construct.  You can just do the following directly...
>>>>>
>>>>> > path = '%m-%d_%H-%i-%s_%cN_%T'
>>>>> > chan = Channel(chanid)
>>>>> > path = path.replace('%cN', chan.name)
>>>>>
>>>>> The Channel class makes all of those associative array values also
>>>>> available as class attributes.  Attributes are just variables stored
>>>>> against an object, and accessed in the same manner as methods (with a
>>>>> '.').  Remember, you still need to feed this new, modified path into
>>>>> the
>>>>> 'formatPath' method, to get out your desired result.
>>>>>
>>>>> _______________________________________________
>>>>> mythtv-users mailing list
>>>>> mythtv-users at mythtv.org
>>>>> http://www.mythtv.org/mailman/listinfo/mythtv-users
>>>>>
>>>>
>>>> Hi Raymond,
>>>
>>> Thanks for the insights, i've now changed the script around a bit. The
>>> thing is I still don't know how to feed the replaced object in this case
>>> %cN into the format.path
>>>
>>> it just gives me the same output and prints the path:
>>>  path = '%m-%d_%H-%i-%sBBC ONE_%T'
>>>
>>> How to I feed this into
>>> newbase = prog.formatPath('%m-%d_%H-%i-%s_%cN_%T').rsplit('.',1)[0] ?
>>>
>>> This is the script up to date:
>>>
>>> #!/usr/bin/python
>>>
>>> import sys
>>> import os
>>> from MythTV import Channel
>>> from MythTV import MythBE, findfile
>>> from MythTV import System
>>>
>>>
>>> if len(sys.argv) != 3:
>>>     raise Exception('Invalid argument count')
>>> chanid, starttime = sys.argv[1:3]
>>>
>>> be = MythBE()
>>> prog = be.getRecording(chanid, starttime)
>>> path = '%m-%d_%H-%i-%s_%cN_%T'
>>> chan = Channel(chanid)
>>> path = path.replace('%cN', chan.name)
>>> oldbase = prog.filename.rsplit('.',1)[0]
>>> newbase = prog.formatPath('%m-%d_%H-%i-%s_%cN_%T').rsplit('.',1)[0]
>>> sg = findfile(prog.filename, prog.storagegroup)
>>> if sg is None:
>>>     raise Exception('file not found')
>>>
>>>
>>> ccextractor = System(path="/home/dave/uksub2srt/uksub2srt.py")
>>> ccextractor('-i', os.path.join(sg.dirname, prog.filename),
>>>              '-o',
>>> '/home/dave/Downloads/subtitles/{0}.srt'.format(newbase))
>>> print path
>>>
>>> Remember, you still need to feed this new, modified path into the
>> 'formatPath' method, to get out your desired result.
>>
>> Still can't figure this part out. Can anyone tell me how I can add this
>> value:
>> path = path.replace('%cN', chan.name)
>>
>> so it works with the 'formatPath'
>>
>> Thought it might work just adding it all to one line but it gives me a
>> syntax error. Is there a certain command i need to add?
>>
>> cheers
>>
>
> Ok changing the formatPath to:
>
> newbase = prog.formatPath(path).rsplit('.',1)[0]
>
> half works as half of the filename is missing and outputs the file up
> until where it says BBC, failing to output BBC ONE and the title.srt
>
> Does anyone know what i need to add to make it give the full path here?
>
> Dave
>

Ok adding " " before and after %cN in the path seems to have done the
trick. Looks like i got there in the end :S
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