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#!/usr/bin/env python3
import sys, argparse, subprocess, json
TWEAK_NAME = {
'asm': 'asm_roll',
'ASM': 'asm_roll',
'hardlink_special': 'hardlink_specials',
'protect_args': 'secluded_args',
'protected_args': 'secluded_args',
'SIMD': 'SIMD_roll',
}
MOVE_OPTIM = set('asm_roll SIMD_roll'.split())
def main():
if not args.rsync or args.rsync == '-':
ver_out = sys.stdin.read().strip()
else:
ver_out = subprocess.check_output([args.rsync, '--version', '--version'], encoding='utf-8').strip()
if ver_out.startswith('{'):
print(ver_out)
return
info = { }
misplaced_optims = { }
for line in ver_out.splitlines():
if line.startswith('rsync '):
prog, vstr, ver, pstr, vstr2, proto = line.split()
info['program'] = prog
if ver.startswith('v'):
ver = ver[1:]
info[vstr] = ver
if '.' not in proto:
proto += '.0'
else:
proto = proto.replace('.PR', '.')
info[pstr] = proto
elif line.startswith('Copyright '):
info['copyright'] = line[10:]
elif line.startswith('Web site: '):
info['url'] = line[10:]
elif line.startswith(' '):
if not saw_comma and ',' in line:
saw_comma = True
info[sect_name] = { }
if saw_comma:
for x in line.strip(' ,').split(', '):
if ' ' in x:
val, var = x.split(' ', 1)
if val == 'no':
val = False
elif val.endswith('-bit'):
var = var[:-1] + '_bits'
val = int(val.split('-')[0])
else:
var = x
val = True
var = var.replace(' ', '_').replace('-', '_')
if var in TWEAK_NAME:
var = TWEAK_NAME[var]
if sect_name[0] != 'o' and var in MOVE_OPTIM:
misplaced_optims[var] = val
else:
info[sect_name][var] = val
else:
info[sect_name] += [ x for x in line.split() if not x.startswith('(') ]
elif line == '':
break
else:
sect_name = line.strip(' :').replace(' ', '_').lower()
info[sect_name] = [ ]
saw_comma = False
for chk in 'capabilities optimizations'.split():
if chk not in info:
info[chk] = { }
if misplaced_optims:
info['optimizations'].update(misplaced_optims)
for chk in 'checksum_list compress_list daemon_auth_list'.split():
if chk not in info:
info[chk] = [ ]
info['license'] = 'GPLv3' if ver[0] == '3' else 'GPLv2'
info['caveat'] = 'rsync comes with ABSOLUTELY NO WARRANTY'
print(json.dumps(info))
if __name__ == '__main__':
parser = argparse.ArgumentParser(description="Output rsync's version data in JSON format, even if the rsync doesn't support a native json-output method.", add_help=False)
parser.add_argument('rsync', nargs='?', help="Specify an rsync command to run. Otherwise stdin is consumed.")
parser.add_argument("--help", "-h", action="help", help="Output this help message and exit.")
args = parser.parse_args()
main()
# vim: sw=4 et
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