blip.tv support for python 2.5 with trivialjson

This commit is contained in:
Philipp Hagemeister 2011-07-10 17:31:54 +02:00
parent a1cab7cead
commit 437d76c19a
1 changed files with 115 additions and 8 deletions

View File

@ -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',
)