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Add format types j, l, q for outtmpl

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Closes #345
This commit is contained in:
pukkandan 2021-07-29 08:26:17 +05:30
parent 901130bbcf
commit 7d1eb38af1
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5 changed files with 49 additions and 17 deletions
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8
README.md
View File

@ -789,10 +789,11 @@ ## Post-Processing Options:
command. An additional field "filepath"
that contains the final path of the
downloaded file is also available. If no
fields are passed, "%(filepath)s" is
appended to the end of the command
fields are passed, %(filepath)q is appended
to the end of the command
--exec-before-download CMD Execute a command before the actual
download. The syntax is the same as --exec
but "filepath" is not available
--convert-subs FORMAT Convert the subtitles to another format
(currently supported: srt|vtt|ass|lrc)
(Alias: --convert-subtitles)
@ -917,10 +918,11 @@ # OUTPUT TEMPLATE
It may however also contain special sequences that will be replaced when downloading each video. The special sequences may be formatted according to [python string formatting operations](https://docs.python.org/2/library/stdtypes.html#string-formatting). For example, `%(NAME)s` or `%(NAME)05d`. To clarify, that is a percent symbol followed by a name in parentheses, followed by formatting operations.
The field names themselves (the part inside the parenthesis) can also have some special formatting:
1. **Object traversal**: The dictionaries and lists available in metadata can be traversed by using a `.` (dot) separator. You can also do python slicing using `:`. Eg: `%(tags.0)s`, `%(subtitles.en.-1.ext)`, `%(id.3:7:-1)s`. Note that the fields that become available using this method are not listed below. Use `-j` to see such fields
1. **Object traversal**: The dictionaries and lists available in metadata can be traversed by using a `.` (dot) separator. You can also do python slicing using `:`. Eg: `%(tags.0)s`, `%(subtitles.en.-1.ext)`, `%(id.3:7:-1)s`, `%(formats.:.format_id)s`. Note that all the fields that become available using this method are not listed below. Use `-j` to see such fields
1. **Addition**: Addition and subtraction of numeric fields can be done using `+` and `-` respectively. Eg: `%(playlist_index+10)03d`, `%(n_entries+1-playlist_index)d`
1. **Date/time Formatting**: Date/time fields can be formatted according to [strftime formatting](https://docs.python.org/3/library/datetime.html#strftime-and-strptime-format-codes) by specifying it separated from the field name using a `>`. Eg: `%(duration>%H-%M-%S)s`, `%(upload_date>%Y-%m-%d)s`, `%(epoch-3600>%H-%M-%S)s`
1. **Default**: A default value can be specified for when the field is empty using a `|` seperator. This overrides `--output-na-template`. Eg: `%(uploader|Unknown)s`
1. **More Conversions**: In addition to the normal format types `diouxXeEfFgGcrs`, `j`, `l`, `q` can be used for converting to **j**son, a comma seperated **l**ist and a string **q**uoted for the terminal respectively
To summarize, the general syntax for a field is:
```

28
test/test_YoutubeDL.py
View File

@ -10,6 +10,7 @@
sys.path.insert(0, os.path.dirname(os.path.dirname(os.path.abspath(__file__))))
import copy
import json
from test.helper import FakeYDL, assertRegexpMatches
from yt_dlp import YoutubeDL
@ -647,6 +648,7 @@ def test_add_extra_info(self):
'title1': '$PATH',
'title2': '%PATH%',
'title3': 'foo/bar\\test',
'title4': 'foo "bar" test',
'timestamp': 1618488000,
'duration': 100000,
'playlist_index': 1,
@ -669,10 +671,12 @@ def test(tmpl, expected, *, info=None, **params):
if callable(expected):
self.assertTrue(expected(out))
self.assertTrue(expected(fname))
elif isinstance(expected, compat_str):
self.assertEqual((out, fname), (expected, expected))
elif isinstance(expected, str):
self.assertEqual(out, expected)
self.assertEqual(fname, expected)
else:
self.assertEqual((out, fname), expected)
self.assertEqual(out, expected[0])
self.assertEqual(fname, expected[1])
# Auto-generated fields
test('%(id)s.%(ext)s', '1234.mp4')
@ -741,14 +745,26 @@ def test(tmpl, expected, *, info=None, **params):
test('%(width|0)04d', '0000')
test('a%(width|)d', 'a', outtmpl_na_placeholder='none')
# Internal formatting
FORMATS = self.outtmpl_info['formats']
sanitize = lambda x: x.replace(':', ' -').replace('"', "'")
# Custom type casting
test('%(formats.:.id)l', 'id1, id2, id3')
test('%(ext)l', 'mp4')
test('%(formats.:.id) 15l', ' id1, id2, id3')
test('%(formats)j', (json.dumps(FORMATS), sanitize(json.dumps(FORMATS))))
if compat_os_name == 'nt':
test('%(title4)q', ('"foo \\"bar\\" test"', "'foo _'bar_' test'"))
else:
test('%(title4)q', ('\'foo "bar" test\'', "'foo 'bar' test'"))
# Internal formatting
test('%(timestamp-1000>%H-%M-%S)s', '11-43-20')
test('%(title|%)s %(title|%%)s', '% %%')
test('%(id+1-height+3)05d', '00158')
test('%(width+100)05d', 'NA')
test('%(formats.0) 15s', ('% 15s' % FORMATS[0], '% 15s' % str(FORMATS[0]).replace(':', ' -')))
test('%(formats.0)r', (repr(FORMATS[0]), repr(FORMATS[0]).replace(':', ' -')))
test('%(formats.0) 15s', ('% 15s' % FORMATS[0], '% 15s' % sanitize(str(FORMATS[0]))))
test('%(formats.0)r', (repr(FORMATS[0]), sanitize(repr(FORMATS[0]))))
test('%(height.0)03d', '001')
test('%(-height.0)04d', '-001')
test('%(formats.-1.id)s', FORMATS[-1]['id'])

24
yt_dlp/YoutubeDL.py
View File

@ -35,6 +35,7 @@
compat_kwargs,
compat_numeric_types,
compat_os_name,
compat_shlex_quote,
compat_str,
compat_tokenize_tokenize,
compat_urllib_error,
@ -108,6 +109,7 @@
try_get,
UnavailableVideoError,
url_basename,
variadic,
version_tuple,
write_json_file,
write_string,
@ -871,9 +873,12 @@ def escape_outtmpl(outtmpl):
@classmethod
def validate_outtmpl(cls, outtmpl):
''' @return None or Exception object '''
outtmpl = cls.escape_outtmpl(cls._outtmpl_expandpath(outtmpl))
outtmpl = re.sub(
STR_FORMAT_RE_TMPL.format('[^)]*', '[ljq]'),
lambda mobj: f'{mobj.group(0)[:-1]}s',
cls._outtmpl_expandpath(outtmpl))
try:
outtmpl % collections.defaultdict(int)
cls.escape_outtmpl(outtmpl) % collections.defaultdict(int)
return None
except ValueError as err:
return err
@ -900,7 +905,7 @@ def prepare_outtmpl(self, outtmpl, info_dict, sanitize=None):
}
TMPL_DICT = {}
EXTERNAL_FORMAT_RE = re.compile(STR_FORMAT_RE_TMPL.format('[^)]*', f'[{STR_FORMAT_TYPES}]'))
EXTERNAL_FORMAT_RE = re.compile(STR_FORMAT_RE_TMPL.format('[^)]*', f'[{STR_FORMAT_TYPES}ljq]'))
MATH_FUNCTIONS = {
'+': float.__add__,
'-': float.__sub__,
@ -977,8 +982,15 @@ def create_key(outer_mobj):
value = default if value is None else value
if fmt == 'c':
value = compat_str(value)
str_fmt = f'{fmt[:-1]}s'
if fmt[-1] == 'l':
value, fmt = ', '.join(variadic(value)), str_fmt
elif fmt[-1] == 'j':
value, fmt = json.dumps(value), str_fmt
elif fmt[-1] == 'q':
value, fmt = compat_shlex_quote(str(value)), str_fmt
elif fmt[-1] == 'c':
value = str(value)
if value is None:
value, fmt = default, 's'
else:
@ -992,7 +1004,7 @@ def create_key(outer_mobj):
if fmt[-1] == 'r':
# If value is an object, sanitize might convert it to a string
# So we convert it to repr first
value, fmt = repr(value), '%ss' % fmt[:-1]
value, fmt = repr(value), str_fmt
if fmt[-1] in 'csr':
value = sanitize(mobj['fields'].split('.')[-1], value)

4
yt_dlp/options.py
View File

@ -1286,11 +1286,11 @@ def _dict_from_options_callback(
'Execute a command on the file after downloading and post-processing. '
'Similar syntax to the output template can be used to pass any field as arguments to the command. '
'An additional field "filepath" that contains the final path of the downloaded file is also available. '
'If no fields are passed, "%(filepath)s" is appended to the end of the command'))
'If no fields are passed, %(filepath)q is appended to the end of the command'))
postproc.add_option(
'--exec-before-download',
metavar='CMD', dest='exec_before_dl_cmd',
help='Execute a command before the actual download. The syntax is the same as --exec')
help='Execute a command before the actual download. The syntax is the same as --exec but "filepath" is not available')
postproc.add_option(
'--convert-subs', '--convert-sub', '--convert-subtitles',
metavar='FORMAT', dest='convertsubtitles', default=None,

2
yt_dlp/utils.py
View File

@ -4451,8 +4451,10 @@ def q(qid):
)
'''
STR_FORMAT_TYPES = 'diouxXeEfFgGcrs'
def limit_length(s, length):
""" Add ellipses to overly long strings """
if s is None: