def p_literal(p):
'''literal : NUMBER
| stringLiteral
'''
p[0] = node.helper.expr(p[1])
# strings with escaped non printable characters need to be treated with care. ESI doesn't have a means to address
# this, so we will use a bit of a hack by representing the unprintable characters in base64 and use the decode function
if 0 == 1 and isinstance(p[0], node.Literal) and p[0].value and isinstance(
p[0].value, str):
vals = []
index = 0
init_literal = p[0].value
unprintable = re.compile(
u'[\x00\x01\x02\x03\x04\x05\x06\x07\x08\x0b\x0c\x0e\x0f\x10\x11\x12\x13\x14\x15\x16\x17\x18\x19\x1a\x1b\x1c\x1d\x1e\x1f'
+
'\x7f\x80\x81\x82\x83\x84\x85\x86\x87\x88\x89\x8a\x8b\x8c\x8d\x8e\x8f\x90\x91\x92\x93\x94\x95\x96\x97\x98\x99\x9a\x9b\x9c\x9d\x9e\x9f\xa0\xa1\xa2\xa3\xa4\xa5\xa6\xa7\xa8\xa9\xaa\xab\xac\xad\xae\xaf\xb0\xb1\xb2\xb3\xb4\xb5\xb6\xb7\xb8\xb9\xba\xbb\xbc\xbd\xbe\xbf\xc0\xc1\xc2\xc3\xc4\xc5\xc6\xc7\xc8\xc9\xca\xcb\xcc\xcd\xce\xcf\xd0\xd1\xd2\xd3\xd4\xd5\xd6\xd7\xd8\xd9\xda\xdb\xdc\xdd\xde\xdf\xe0\xe1\xe2\xe3\xe4\xe5\xe6\xe7\xe8\xe9\xea\xeb\xec\xed\xee\xef\xf0\xf1\xf2\xf3\xf4\xf5\xf6\xf7\xf8\xf9\xfa\xfb\xfc\xfd\xfe\xff]+'
)
for match in unprintable.finditer(init_literal):
text = init_literal[index:match.start()]
non_text = init_literal[match.start():match.end()]
index = match.end()
if text: vals.append(node.Literal(text))
vals.append(
node.FunctionCall(
"base64_decode",
node.Literal(
base64.b64encode(
non_text.encode('utf-8')).decode('utf-8'))))
if index < len(init_literal):
vals.append(node.Literal(init_literal[index:]))
if len(vals) == 1:
p[0] = vals[0]
elif len(vals) > 1:
p[0] = node.Add(*vals)
def p_assign_incdec(p):
'''assign : assignLvalue INCREMENT
| assignLvalue DECREMENT
'''
op = p[2][0] == '+' and node.Plus or node.Minus
p[0] = node.Assign(p[1][0],
op(node.Variable(p[1][0], key=p[1][1]),
node.Literal(1)),
key=p[1][1])
def p_includeAttribute(p):
'''includeAttribute : aSRC varsExpr
| aALT varsExpr
| aDCA varsExpr
| aONERROR varsExpr
| aMAXWAIT varsExpr
| aTTL varsExpr
| aNOSTORE varsExpr
| aAPPENDHEADER varsExpr
| aREMOVEHEADER varsExpr
| aSETHEADER varsExpr
| aMETHOD varsExpr
| aENTITY varsExpr
'''
p[0] = (p[1], p[2])
# tbd: this is a serious hack... but, then again, so is ESI...
if p[1] == 'dca' and isinstance(p[2], node.Literal) and '\'' in p[2].value:
p[0] = (p[1], node.Literal(p[2].value.replace('\'', '')))
# tbd: this is somewhat of a hack as well... it indicates that
# includeAttribute should probably not be a varsExpr, but something
# a little smarter...
if p[1] == 'maxwait' and isinstance(p[2], node.Literal):
p[0] = (p[1], node.Literal(int(p[2].value)))
def p_literal_bool(p):
'''literal : TRUE
| FALSE
'''
p[0] = node.Literal(p[1] == 'true')
def p_literal(p):
'''literal : NUMBER
| string
'''
p[0] = node.Literal(p[1])
def p_dictionaryEntry_symbol(p):
'dictionaryEntry : SYMBOL COLON expression'
p[0] = (node.Literal(p[1]), p[3])
def p_factor_symbol(p):
'factor : SYMBOL'
p[0] = node.Literal(p[1])
def p_varsExpr_literal(p):
'varsExprElement : string'
p[0] = node.Literal(p[1])