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Add format types j, l, q for outtmpl

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Closes #345
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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
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@ -789,10 +789,11 @@ Then simply run `make`. You can also run `make yt-dlp` instead to compile only t
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 @@ The simplest usage of `-o` is not to set any template arguments when downloading
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
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@ -10,6 +10,7 @@ import unittest
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 @@ class TestYoutubeDL(unittest.TestCase):
'title1': '$PATH',
'title2': '%PATH%',
'title3': 'foo/bar\\test',
'title4': 'foo "bar" test',
'timestamp': 1618488000,
'duration': 100000,
'playlist_index': 1,
@ -669,10 +671,12 @@ class TestYoutubeDL(unittest.TestCase):
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 @@ class TestYoutubeDL(unittest.TestCase):
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
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@ -35,6 +35,7 @@ from .compat import (
compat_kwargs,
compat_numeric_types,
compat_os_name,
compat_shlex_quote,
compat_str,
compat_tokenize_tokenize,
compat_urllib_error,
@ -108,6 +109,7 @@ from .utils import (
try_get,
UnavailableVideoError,
url_basename,
variadic,
version_tuple,
write_json_file,
write_string,
@ -871,9 +873,12 @@ class YoutubeDL(object):
@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 @@ class YoutubeDL(object):
}
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 @@ class YoutubeDL(object):
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 @@ class YoutubeDL(object):
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 parseOpts(overrideArguments=None):
'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
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@ -4451,8 +4451,10 @@ STR_FORMAT_RE_TMPL = r'''(?x)
)
'''
STR_FORMAT_TYPES = 'diouxXeEfFgGcrs'
def limit_length(s, length):
""" Add ellipses to overly long strings """
if s is None: