[utils] Improve js_to_json, align with yt-dlp

* support variable substitution, from https://github.com/yt-dlp/yt-dlp/pull/#521 etc,
  thanks ChillingPepper, Grub4k, pukkandan
* improve escape handling, from https://github.com/yt-dlp/yt-dlp/pull/#521
  thanks Grub4k
* support template strings from https://github.com/yt-dlp/yt-dlp/pull/6623
  thanks Grub4k
* add limited `!` evaluation (eg, !!0 -> false, see tests)
This commit is contained in:
dirkf
2023-05-03 12:06:34 +01:00
parent 825a40744b
commit d9d07a9581
2 changed files with 186 additions and 29 deletions

View File

@ -905,6 +905,85 @@ class TestUtil(unittest.TestCase):
)
self.assertEqual(escape_url('http://vimeo.com/56015672#at=0'), 'http://vimeo.com/56015672#at=0')
def test_js_to_json_vars_strings(self):
self.assertDictEqual(
json.loads(js_to_json(
'''{
'null': a,
'nullStr': b,
'true': c,
'trueStr': d,
'false': e,
'falseStr': f,
'unresolvedVar': g,
}''',
{
'a': 'null',
'b': '"null"',
'c': 'true',
'd': '"true"',
'e': 'false',
'f': '"false"',
'g': 'var',
}
)),
{
'null': None,
'nullStr': 'null',
'true': True,
'trueStr': 'true',
'false': False,
'falseStr': 'false',
'unresolvedVar': 'var'
}
)
self.assertDictEqual(
json.loads(js_to_json(
'''{
'int': a,
'intStr': b,
'float': c,
'floatStr': d,
}''',
{
'a': '123',
'b': '"123"',
'c': '1.23',
'd': '"1.23"',
}
)),
{
'int': 123,
'intStr': '123',
'float': 1.23,
'floatStr': '1.23',
}
)
self.assertDictEqual(
json.loads(js_to_json(
'''{
'object': a,
'objectStr': b,
'array': c,
'arrayStr': d,
}''',
{
'a': '{}',
'b': '"{}"',
'c': '[]',
'd': '"[]"',
}
)),
{
'object': {},
'objectStr': '{}',
'array': [],
'arrayStr': '[]',
}
)
def test_js_to_json_realworld(self):
inp = '''{
'clip':{'provider':'pseudo'}
@ -975,10 +1054,10 @@ class TestUtil(unittest.TestCase):
!42: 42
}''')
self.assertEqual(json.loads(on), {
'a': 0,
'b': 1,
'c': 0,
'd': 42.42,
'a': True,
'b': False,
'c': False,
'd': True,
'e': [],
'f': "abc",
'g': "",
@ -1048,10 +1127,26 @@ class TestUtil(unittest.TestCase):
on = js_to_json('{ "040": "040" }')
self.assertEqual(json.loads(on), {'040': '040'})
on = js_to_json('[1,//{},\n2]')
self.assertEqual(json.loads(on), [1, 2])
on = js_to_json(r'"\^\$\#"')
self.assertEqual(json.loads(on), R'^$#', msg='Unnecessary escapes should be stripped')
on = js_to_json('\'"\\""\'')
self.assertEqual(json.loads(on), '"""', msg='Unnecessary quote escape should be escaped')
def test_js_to_json_malformed(self):
self.assertEqual(js_to_json('42a1'), '42"a1"')
self.assertEqual(js_to_json('42a-1'), '42"a"-1')
def test_js_to_json_template_literal(self):
self.assertEqual(js_to_json('`Hello ${name}`', {'name': '"world"'}), '"Hello world"')
self.assertEqual(js_to_json('`${name}${name}`', {'name': '"X"'}), '"XX"')
self.assertEqual(js_to_json('`${name}${name}`', {'name': '5'}), '"55"')
self.assertEqual(js_to_json('`${name}"${name}"`', {'name': '5'}), '"5\\"5\\""')
self.assertEqual(js_to_json('`${name}`', {}), '"name"')
def test_extract_attributes(self):
self.assertEqual(extract_attributes('<e x="y">'), {'x': 'y'})
self.assertEqual(extract_attributes("<e x='y'>"), {'x': 'y'})