view tests/heredoctest.py @ 45064:41b32cbc53f8

commitctx: document _filecommit input and output

This is the beginning of a larger refactoring/cleanup of the commitctx code to
clarify and augment the logic gathering metadata useful for copy tracing. The
current code is a tad too long and entangled to make such update easy. We start
with easy and small cleanup.

Differential Revision: https://phab.mercurial-scm.org/D8699

from __future__ import absolute_import, print_function

import sys


def flush():
    sys.stdout.flush()
    sys.stderr.flush()


globalvars = {}
lines = sys.stdin.readlines()
while lines:
    l = lines.pop(0)
    if l.startswith('SALT'):
        print(l[:-1])
    elif l.startswith('>>> '):
        snippet = l[4:]
        while lines and lines[0].startswith('... '):
            l = lines.pop(0)
            snippet += l[4:]
        c = compile(snippet, '<heredoc>', 'single')
        try:
            flush()
            exec(c, globalvars)
            flush()
        except Exception as inst:
            flush()
            print(repr(inst))