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| r'''Generic Moses Wrapper |
| |
| Run moses, wrapping various inputs and outputs |
| (useful as decoder-executable for mert-moses.pl) |
| |
| mert-moses.pl \ |
| --decoder wrap_moses.py --input src --refs ref --config moses.ini \ |
| --decoder-flags="--wrap-input-file my_preproc_script.sh \ |
| --wrap-n-best-list my_postproc_script.sh" |
| |
| Commands are run through shell, so they may contain multiple piped commands |
| |
| Anything not in the following list is passed through to moses as decoder flags |
| ''' |
|
|
| import argparse |
| import os |
| import shutil |
| import subprocess |
| import sys |
| import tempfile |
|
|
| |
| MOSES = os.path.join(os.path.dirname(os.path.dirname(os.path.dirname( |
| os.path.abspath(__file__)))), 'bin', 'moses') |
|
|
|
|
| def popen(cmd, shell=True, stdin=subprocess.PIPE, stdout=subprocess.PIPE): |
| '''Open command for streaming''' |
| return subprocess.Popen(cmd, shell=shell, stdin=stdin, stdout=stdout) |
|
|
|
|
| def main(): |
|
|
| |
| parser = argparse.ArgumentParser() |
| parser.add_argument( |
| '--moses', help='Moses executable (default: {})'.format(MOSES), |
| default=MOSES) |
| parser.add_argument( |
| '--tmp', help='Temp directory parent (default: /tmp)', default='/tmp') |
| parser.add_argument( |
| '--wrap-input-file', metavar='CMD', |
| help='Pipe input file through this command') |
| parser.add_argument( |
| '--wrap-n-best-list', metavar='CMD', |
| help='Pipe n-best list through this command') |
| parser.add_argument( |
| '--wrap-stdin', metavar='CMD', help='Pipe stdin through this command') |
| parser.add_argument( |
| '--wrap-stdout', metavar='CMD', help='Pipe stdout through this command') |
|
|
| |
| if len(sys.argv) == 1: |
| sys.stderr.write(__doc__) |
| parser.print_help() |
| sys.exit(2) |
|
|
| |
| (args, moses_args) = parser.parse_known_args() |
| moses_arg_set = set(moses_args) |
|
|
| |
| if '--show-weights' in moses_arg_set or '-show-weights' in moses_arg_set: |
| sys.stdout.write(subprocess.check_output([args.moses] + moses_args)) |
| sys.stdout.flush() |
| sys.exit(0) |
|
|
| |
| input_file = None |
| input_file_i = None |
| n_best_list = None |
| n_best_list_i = None |
| if not os.path.exists(args.moses): |
| sys.stderr.write( |
| 'Error: cannot find moses executable at "{}", ' |
| 'specify with --moses\n'.format(args.moses)) |
| sys.exit(1) |
| if args.wrap_input_file and args.wrap_stdin: |
| sys.stderr.write( |
| 'Error: cannot use both --wrap-input-file and --wrap-stdin\n') |
| sys.exit(1) |
| if args.wrap_input_file: |
| try: |
| input_file_i = moses_args.index('--input-file') + 1 |
| except ValueError: |
| sys.stderr.write( |
| 'Error: --wrap-input-file requires --input-file\n') |
| sys.exit(1) |
| input_file = moses_args[input_file_i] |
| if args.wrap_n_best_list: |
| try: |
| n_best_list_i = moses_args.index('--n-best-list') + 1 |
| except ValueError: |
| try: |
| n_best_list_i = moses_args.index('-n-best-list') + 1 |
| except ValueError: |
| sys.stderr.write( |
| 'Error: --wrap-n-best-list requires --n-best-list\n') |
| sys.exit(1) |
| n_best_list = moses_args[n_best_list_i] |
| |
| stream_input = not ( |
| '--input-file' in moses_arg_set or '-input-file' in moses_arg_set |
| or '-i' in moses_arg_set) |
|
|
| |
| tmp = tempfile.mkdtemp(prefix=os.path.join(args.tmp, 'moses.')) |
|
|
| |
| moses_input_file = None |
| if args.wrap_input_file: |
| moses_input_file = os.path.join(tmp, 'input_file') |
| subprocess.call('{} <{} >{}'.format( |
| args.wrap_input_file, input_file, moses_input_file), shell=True) |
| |
| moses_n_best_list = os.path.join(tmp, 'n_best_list') |
|
|
| |
| moses_cmd = moses_args[:] |
| if args.wrap_input_file: |
| moses_cmd[input_file_i] = moses_input_file |
| if args.wrap_n_best_list: |
| moses_cmd[n_best_list_i] = moses_n_best_list |
| moses_cmd = [args.moses] + moses_cmd |
|
|
| |
| wrap_stdin = None |
| moses_stdin = subprocess.PIPE |
| if args.wrap_stdin: |
| wrap_stdin = popen(args.wrap_stdin) |
| moses_stdin = wrap_stdin.stdout |
| moses = None |
| wrap_stdout = None |
| if args.wrap_stdout: |
| |
| moses = popen(moses_cmd, shell=False, stdin=moses_stdin) |
| wrap_stdout = popen( |
| args.wrap_stdout, stdin=moses.stdout, stdout=sys.stdout) |
| else: |
| |
| moses = popen( |
| moses_cmd, shell=False, stdin=moses_stdin, stdout=sys.stdout) |
|
|
| |
| stdin = wrap_stdin.stdin if wrap_stdin else moses.stdin |
| if stream_input: |
| while True: |
| line = sys.stdin.readline() |
| if not line: |
| break |
| stdin.write(line) |
| stdin.flush() |
| stdin.close() |
| if wrap_stdin: |
| wrap_stdin.wait() |
| moses.wait() |
| if wrap_stdout: |
| wrap_stdout.wait() |
|
|
| |
| if args.wrap_n_best_list: |
| subprocess.call('{} <{} >{}'.format( |
| args.wrap_n_best_list, moses_n_best_list, n_best_list), shell=True) |
|
|
| |
| shutil.rmtree(tmp) |
|
|
|
|
| if __name__ == '__main__': |
| main() |
|
|
