#!/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