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authorSergey M․ <[email protected]>2017-05-18 22:18:33 +0700
committerSergey M․ <[email protected]>2017-05-18 22:18:33 +0700
commit7769f837018cbfa6cab615b8ae938528f895ce8c (patch)
treed4ba01f2d529239cff7f08b99478726b1f9bd46a /youtube_dl/jsinterp.py
parent650bd9471697390a9cdef2a54d35ec6dd5dc49ce (diff)
downloadyoutube-dl-7769f837018cbfa6cab615b8ae938528f895ce8c.tar.gz
youtube-dl-7769f837018cbfa6cab615b8ae938528f895ce8c.zip
[jsinterp] Add support for quoted names and indexers (closes #13123, closes #13130)
Diffstat (limited to 'youtube_dl/jsinterp.py')
-rw-r--r--youtube_dl/jsinterp.py33
1 files changed, 17 insertions, 16 deletions
diff --git a/youtube_dl/jsinterp.py b/youtube_dl/jsinterp.py
index 24cdec28c..038910049 100644
--- a/youtube_dl/jsinterp.py
+++ b/youtube_dl/jsinterp.py
@@ -6,6 +6,7 @@ import re
from .utils import (
ExtractorError,
+ remove_quotes,
)
_OPERATORS = [
@@ -57,7 +58,6 @@ class JSInterpreter(object):
def interpret_expression(self, expr, local_vars, allow_recursion):
expr = expr.strip()
-
if expr == '': # Empty expression
return None
@@ -121,11 +121,19 @@ class JSInterpreter(object):
pass
m = re.match(
- r'(?P<var>%s)\.(?P<member>[^(]+)(?:\(+(?P<args>[^()]*)\))?$' % _NAME_RE,
+ r'(?P<in>%s)\[(?P<idx>.+)\]$' % _NAME_RE, expr)
+ if m:
+ val = local_vars[m.group('in')]
+ idx = self.interpret_expression(
+ m.group('idx'), local_vars, allow_recursion - 1)
+ return val[idx]
+
+ m = re.match(
+ r'(?P<var>%s)(?:\.(?P<member>[^(]+)|\[(?P<member2>[^]]+)\])\s*(?:\(+(?P<args>[^()]*)\))?$' % _NAME_RE,
expr)
if m:
variable = m.group('var')
- member = m.group('member')
+ member = remove_quotes(m.group('member') or m.group('member2'))
arg_str = m.group('args')
if variable in local_vars:
@@ -173,14 +181,6 @@ class JSInterpreter(object):
return obj[member](argvals)
- m = re.match(
- r'(?P<in>%s)\[(?P<idx>.+)\]$' % _NAME_RE, expr)
- if m:
- val = local_vars[m.group('in')]
- idx = self.interpret_expression(
- m.group('idx'), local_vars, allow_recursion - 1)
- return val[idx]
-
for op, opfunc in _OPERATORS:
m = re.match(r'(?P<x>.+?)%s(?P<y>.+)' % re.escape(op), expr)
if not m:
@@ -211,21 +211,22 @@ class JSInterpreter(object):
raise ExtractorError('Unsupported JS expression %r' % expr)
def extract_object(self, objname):
+ _FUNC_NAME_RE = r'''(?:[a-zA-Z$0-9]+|"[a-zA-Z$0-9]+"|'[a-zA-Z$0-9]+')'''
obj = {}
obj_m = re.search(
(r'(?<!this\.)%s\s*=\s*\{' % re.escape(objname)) +
- r'\s*(?P<fields>([a-zA-Z$0-9]+\s*:\s*function\(.*?\)\s*\{.*?\}(?:,\s*)?)*)' +
- r'\}\s*;',
+ r'\s*(?P<fields>(%s\s*:\s*function\(.*?\)\s*\{.*?\}(?:,\s*)?)*)' +
+ r'\}\s*;' % _FUNC_NAME_RE,
self.code)
fields = obj_m.group('fields')
# Currently, it only supports function definitions
fields_m = re.finditer(
- r'(?P<key>[a-zA-Z$0-9]+)\s*:\s*function'
- r'\((?P<args>[a-z,]+)\){(?P<code>[^}]+)}',
+ r'(?P<key>%s)\s*:\s*function'
+ r'\((?P<args>[a-z,]+)\){(?P<code>[^}]+)}' % _FUNC_NAME_RE,
fields)
for f in fields_m:
argnames = f.group('args').split(',')
- obj[f.group('key')] = self.build_function(argnames, f.group('code'))
+ obj[remove_quotes(f.group('key'))] = self.build_function(argnames, f.group('code'))
return obj