tests/seq.py

phabricator: rework phabread to reduce memory usage and round-trips

This patch reworked phabread a bit so it fetches the lightweight
"Differential Revision" metadata for a stack first. Then read other data.

This allows the code to:

  a) send 1 request to get all `hg:meta` data instead of N requests
  b) patches are read in desired order, no need to buffer the output

"b)" reduces the memory usage from O(N^2) to O(N) since we no longer keep
old patch contents in memory.

The above `N` means the number of patches in the stack.

#!/usr/bin/env python
#
# A portable replacement for 'seq'
#
# Usage:
#   seq STOP              [1, STOP] stepping by 1
#   seq START STOP        [START, STOP] stepping by 1
#   seq START STEP STOP   [START, STOP] stepping by STEP

from __future__ import absolute_import, print_function
import sys

start = 1
if len(sys.argv) > 2:
    start = int(sys.argv[1])

step = 1
if len(sys.argv) > 3:
    step = int(sys.argv[2])

stop = int(sys.argv[-1]) + 1

for i in xrange(start, stop, step):
    print(i)