def construct_subhash_vectors(fname, dup_map):
"""collect set of checksums per file, substituting numeric id (fno, hno)
for text values"""
result = []
FnameMap.reset() # initialize mapping tables
ChecksumMap.reset()
fd = open(fname)
last_name = ""
hash_set = []
for text in fd:
(val, name) = parse_md5deep_subfile_entry(text)
if name != last_name:
vec = construct_vector(last_name, hash_set, dup_map)
if vec:
result.append(vec)
last_name = name
hash_set = []
hash_set.append(val)
vec = construct_vector(name, hash_set, dup_map)
if vec:
result.append(vec)
fd.close()
return result
