def read_jobs_from_file_merged(path_to_file):
"""
Reads jobs from the given file.
Expected format (prefix, infix or suffix whitespaces are allowed):
1 14 2 6 3 17
2 5 3 21 1 10
Format semantics:
<machine job1/op1> <time job1/op1> <machine job1/op1> <time job1/op2> ...
<machine job2/op1> <time job2/op1> ...
Keyword arguments:
path_to_file -- relative path to the text file to be parsed
Returns:
list of jobs, read from the file
"""
with open(path_to_file, "r") as f:
jobs = list()
for line in f:
normalised_line = re.sub(r"(^\s*)|(\s*$)", "", line)
split_line = re.split(r"\s+", normalised_line)
if len(split_line) % 2 != 0:
print("Failed to parse \"" + path_to_file +
"\" as a job contains an odd number of values!")
sys.exit(1)
job = Job()
for (machine, time) in zip(split_line[::2], split_line[1::2]):
op = Operation(int(time), int(machine))
job.add_operation(op)
jobs.append(job)
return jobs
def read_jobs_from_file_split(path_to_file):
"""
Reads jobs from the given file.
Expected format (prefix, infix or suffix whitespaces are allowed):
Times
14 6 17
5 21 10
Machines
1 2 3
2 3 1
Format semantics:
Times
<time job1/op1> <time job1/op2> ...
<time job2/op1> ...
Machines
<machine job1/op1> <machine job1/op2> ...
<machine job2/op1> ...
Keyword arguments:
path_to_file -- relative path to the text file to be parsed
Returns:
list of jobs, read from the file
"""
with open(path_to_file, "r") as f:
times = list()
machines = list()
times_and_not_machines = True
for line in f:
normalised_line = re.sub(r"(^\s*)|(\s*$)", "", line)
if normalised_line == "Times":
times_and_not_machines = True
continue
elif normalised_line == "Machines":
times_and_not_machines = False
continue
split_line = re.split(r"\s+", normalised_line)
if times_and_not_machines:
times.append(split_line)
else:
machines.append(split_line)
if len(times) != len(machines):
print("Failed to parse \"" + path_to_file +
"\" as the number of jobs is inconsistent!")
sys.exit(1)
jobs = list()
for i in range(0, len(times)):
if len(times[i]) != len(machines[i]):
print(
"Failed to parse \"" + path_to_file +
"\" as a job contains an inconsistent number of times and machines!"
)
sys.exit(1)
job = Job()
for (time, machine) in zip(times[i], machines[i]):
op = Operation(int(time), int(machine))
job.add_operation(op)
jobs.append(job)
return jobs
