def first_bracketed_string(text, depth=0, lbrack="{", rbrack="}"):
"""If text is of the form {A}B, return {A},B.
Otherwise, return "",text.
"""
thetext = text.strip()
if not thetext:
logger.error("empty string sent to first_bracketed_string()")
return ""
previouschar = ""
# we need to keep track of the previous character becaause \{ does not
# count as a bracket
if depth == 0 and thetext[0] != lbrack:
return "", thetext
elif depth == 0:
firstpart = lbrack
depth = 1
thetext = thetext[1:]
else:
firstpart = "" # should be some number of brackets?
while depth > 0 and thetext:
currentchar = thetext[0]
if currentchar == lbrack and previouschar != "\\":
depth += 1
elif currentchar == rbrack and previouschar != "\\":
depth -= 1
firstpart += currentchar
if previouschar == "\\" and currentchar == "\\":
previouschar = "\n"
else:
previouschar = currentchar
thetext = thetext[1:]
if depth == 0:
return firstpart, thetext
else:
logger.error("no matching bracket %s in %s XX", lbrack, thetext)
return "", firstpart[1:] # firstpart should be everything
def first_bracketed_string(text, depth=0, lbrack="{", rbrack="}"):
"""If text is of the form {A}B, return {A},B.
Otherwise, return "",text.
"""
thetext = text.strip()
if not thetext:
logger.error("empty string sent to first_bracketed_string()")
return ""
previouschar = ""
# we need to keep track of the previous character becaause \{ does not
# count as a bracket
if depth == 0 and thetext[0] != lbrack:
return "",thetext
elif depth == 0:
firstpart = lbrack
depth = 1
thetext = thetext[1:]
else:
firstpart = "" # should be some number of brackets?
while depth > 0 and thetext:
currentchar = thetext[0]
if currentchar == lbrack and previouschar != "\\":
depth += 1
elif currentchar == rbrack and previouschar != "\\":
depth -= 1
firstpart += currentchar
if previouschar == "\\" and currentchar == "\\":
previouschar = "\n"
else:
previouschar = currentchar
thetext = thetext[1:]
if depth == 0:
return firstpart, thetext
else:
logger.error("no matching bracket %s in %s XX", lbrack, thetext)
return "",firstpart[1:] # firstpart should be everything