从git commit中提取时间相关信息计算其距离现在的秒数

commit_time_in_seconds.py

'''
例子:
1.  '*********** - 1 year, 4 months ago - someone do something1' => 1*365*24*60*60 + 4*30*24*60*60
2.  '*********** - 3 months, 7days ago - someone do something2' => 3*30*24*60*60 + 7*24*60*60
3.  '*********** - 5 hours ago - someone do something3' => 5*60*60
'''

unit_map = {
    'years': 365 * 24 * 60 * 60,
    'year': 365 * 24 * 60 * 60,
    'months': 30 * 24 * 60 * 60,
    'month': 30 * 24 * 60 * 60,
    'weeks': 7 * 24 * 60 * 60,
    'week': 24 * 60 * 60,
    'days': 24 * 60 * 60,
    'day': 24 * 60 * 60,
    'hours': 60 * 60,
    'hour': 60 * 60,
    'minutes': 60,
    'minute': 60,
    'seconds': 1,
    'second': 1
}

def commit_time_in_seconds(commit):
    '''以秒为单位计算一个commit距离现在的时间'''
    res = commit.split('-')
    if len(res) <= 1:  # can not retrieve time, make it order in front
        return 0
    times_str = res[1]
    if not times_str:
        return 0
    times = [part.strip() for part in times_str.split(',') if part]
    if not times:
        return 0
    pattern = '(?P<count>\d+)\s*(?P<unit>years?|months?|weeks?|days?|hours?|minutes?|seconds?)'
    p = re.compile(pattern)
    total_seconds = 0
    for t in times:
        m = p.match(t)
        if not m:
            continue
        count = m.groupdict().get('count', None)
        unit = m.groupdict().get('unit', None)
        if count is None or unit is None:
            continue
        total_seconds += int(count) * unit_map.get(unit, 0)
    return total_seconds