def generateFilterByPredicate(predicateStr, convIdxL, globalNamespace, localNamespace):
"""
predicateStr :: str
Predicate string.
After evaled, predicate type must be (*xs -> bool).
convIdxL :: [(str -> ANY), int]
Column index list with type converter.
globalNamespace :: dict
Global name space.
localNamespace :: dict
local name space.
return :: tuple(str) -> bool
Filter function.
"""
predicate = eval(predicateStr, globalNamespace, localNamespace)
project1 = pysows.generateProjectConv(convIdxL)
def filterByPredicate(rec):
"""
rec :: tuple(str)
return :: bool
"""
return predicate(*project1(rec))
return filterByPredicate
def doMain():
args = parseOpts(sys.argv[1:])
g = globals()
l = locals()
pysows.loadPythonCodeFile(args.load_file, g, l)
mapFunc = eval(args.map_func, g, l)
constructor = eval(args.record_constructor, g, l)
convIdxL = pysows.getTypedColumnIndexList(args.group_indexes)
assert len(convIdxL) > 0
getKeyFromRec = pysows.generateProjectConv(convIdxL)
reader = pysows.recordReader(sys.stdin, args.separator)
for rec in reader:
key = getKeyFromRec(rec)
mapped = mapFunc(*key)
outRec = constructor(rec, mapped)
pysows.printList(outRec)
print
