blip.tv support for python 2.5 with trivialjson

youtube-dl

@@ -7,10 +7,9 @@
 # Author: Witold Baryluk
 # Author: Paweł Paprota
 # Author: Gergely Imreh
+# Author: Philipp Hagemeister <phihag@phihag.de>
 # License: Public domain code
-
 from __future__ import with_statement
-
 import contextlib
 import cookielib
 import ctypes
@@ -35,11 +34,6 @@ import urllib2
 import warnings
 import zlib
 
-try:
-	import json
-except ImportError:
-	warnings.warn('No JSON support (TODO: insert trivialjson here)')
-
 try:
 	import cStringIO as StringIO
 except ImportError:
@@ -66,6 +60,119 @@ std_headers = {
 
 simple_title_chars = string.ascii_letters.decode('ascii') + string.digits.decode('ascii')
 
+try:
+	import json
+except ImportError: # Python <2.5, use trivialjson (https://github.com/phihag/trivialjson):
+	import re
+	class json(object):
+		@staticmethod
+		def loads(s):
+			s = s.decode('UTF-8')
+			def raiseError(msg, i):
+				raise ValueError(msg + ' at position ' + str(i) + ' of ' + repr(s) + ': ' + repr(s[i:]))
+			def skipSpace(i, expectMore=True):
+				while i < len(s) and s[i] in ' \t\r\n':
+					i += 1
+				if expectMore:
+					if i >= len(s):
+						raiseError('Premature end', i)
+				return i
+			def decodeEscape(match):
+				esc = match.group(1)
+				_STATIC = {
+					'"': '"',
+					'\\': '\\',
+					'/': '/',
+					'b': unichr(0x8),
+					'f': unichr(0xc),
+					'n': '\n',
+					'r': '\r',
+					't': '\t',
+				}
+				if esc in _STATIC:
+					return _STATIC[esc]
+				if esc[0] == 'u':
+					if len(esc) == 1+4:
+						return unichr(int(esc[1:5], 16))
+					if len(esc) == 5+6 and esc[5:7] == '\\u':
+						hi = int(esc[1:5], 16)
+						low = int(esc[7:11], 16)
+						return unichr((hi - 0xd800) * 0x400 + low - 0xdc00 + 0x10000)
+				raise ValueError('Unknown escape ' + str(esc))
+			def parseString(i):
+				i += 1
+				e = i
+				while True:
+					e = s.index('"', e)
+					bslashes = 0
+					while s[e-bslashes-1] == '\\':
+						bslashes += 1
+					if bslashes % 2 == 1:
+						e += 1
+						continue
+					break
+				rexp = re.compile(r'\\(u[dD][89aAbB][0-9a-fA-F]{2}\\u[0-9a-fA-F]{4}|u[0-9a-fA-F]{4}|.|$)')
+				stri = rexp.sub(decodeEscape, s[i:e])
+				return (e+1,stri)
+			def parseObj(i):
+				i += 1
+				res = {}
+				i = skipSpace(i)
+				if s[i] == '}': # Empty dictionary
+					return (i+1,res)
+				while True:
+					if s[i] != '"':
+						raiseError('Expected a string object key', i)
+					i,key = parseString(i)
+					i = skipSpace(i)
+					if i >= len(s) or s[i] != ':':
+						raiseError('Expected a colon', i)
+					i,val = parse(i+1)
+					res[key] = val
+					i = skipSpace(i)
+					if s[i] == '}':
+						return (i+1, res)
+					if s[i] != ',':
+						raiseError('Expected comma or closing curly brace', i)
+					i = skipSpace(i+1)
+			def parseArray(i):
+				res = []
+				i = skipSpace(i+1)
+				if s[i] == ']': # Empty array
+					return (i+1,res)
+				while True:
+					i,val = parse(i)
+					res.append(val)
+					i = skipSpace(i) # Raise exception if premature end
+					if s[i] == ']':
+						return (i+1, res)
+					if s[i] != ',':
+						raiseError('Expected a comma or closing bracket', i)
+					i = skipSpace(i+1)
+			def parseDiscrete(i):
+				for k,v in {'true': True, 'false': False, 'null': None}.items():
+					if s.startswith(k, i):
+						return (i+len(k), v)
+				raiseError('Not a boolean (or null)', i)
+			def parseNumber(i):
+				mobj = re.match('^(-?(0|[1-9][0-9]*)(\.[0-9]*)?([eE][+-]?[0-9]+)?)', s[i:])
+				if mobj is None:
+					raiseError('Not a number', i)
+				nums = mobj.group(1)
+				if '.' in nums or 'e' in nums or 'E' in nums:
+					return (i+len(nums), float(nums))
+				return (i+len(nums), int(nums))
+			CHARMAP = {'{': parseObj, '[': parseArray, '"': parseString, 't': parseDiscrete, 'f': parseDiscrete, 'n': parseDiscrete}
+			def parse(i):
+				i = skipSpace(i)
+				i,res = CHARMAP.get(s[i], parseNumber)(i)
+				i = skipSpace(i, False)
+				return (i,res)
+			i,res = parse(0)
+			if i < len(s):
+				raise ValueError('Extra data at end of input (index ' + str(i) + ' of ' + repr(s) + ': ' + repr(s[i:]) + ')')
+			return res
+
 def preferredencoding():
 	"""Get preferred encoding.
 
@@ -2831,7 +2938,7 @@ if __name__ == '__main__':
 		# Parse command line
 		parser = optparse.OptionParser(
 			usage='Usage: %prog [options] url...',
-			version='2011.03.29',
+			version='2011.07.09-phihag',
 			conflict_handler='resolve',
 		)