获取git 代码改动 commitid gitchange.py

!/usr/bin/env python

import os
import sys
import time
import getopt
import re
import commands
import subprocess


def usage():
        print ("Usage:")
        print ("gitchange.py <add/del> 'CODE' <file> [commitid]")
        print ("Example: gitchange.py del 'm_clockState == PTP_CLK_STATE_PHASETRACKING' Ptp1588Clk.cc ")
        print ("Example: gitchange.py del 'm_clockState == PTP_CLK_STATE_PHASETRACKING' Ptp1588Clk.cc 17f09bc")
        print ("         search from latest or commitid[17f09bc]")
        sys.exit(1)

def get_changeid(code, file):
#   git log --oneline Ptp1588Log.cc |awk '{print $1}'

    command = "git log --oneline " + file + "|awk '{print $1}' "
    output = subprocess.Popen(command, stdout=subprocess.PIPE, shell=True)
    (out, err) = output.communicate()
    return out

def git_show(commitid, file):

    command = "git show " + commitid + " " + file
#   print ("git_show cmd {}".format(command))
    output = subprocess.Popen(command, stdout=subprocess.PIPE, shell=True)
    (out, err) = output.communicate()
    return out


if __name__ == '__main__':
    if len(sys.argv) < 4: usage()

    method= str(sys.argv[1])
    code = str(sys.argv[2])
    file = str(sys.argv[3])
    startid=""

    if len(sys.argv) > 4:
        startid = str(sys.argv[4])

    if method != 'add' and method != 'del':
        usage();

    commitids =get_changeid(code,file).split()
#   print commitids

    latestid=''
    find = False
    flag = False

    for commitid in commitids:

        if len(startid) == 0 or startid == latestid :
            flag = True

        if not flag:
            latestid = commitid
            continue
#       command = git diff d998a2d 5befda8 Ptp1588Extif.cc 
        command = "git diff " + commitid + " " + latestid + " " + file
        print("command is: {}".format(command))
#       lastid = commitid
        p = subprocess.Popen(command, stdout=subprocess.PIPE, shell=True)
        while True:
            linebuf = p.stdout.readline()
#           print linebuf
            if linebuf == '' and p.poll() != None:
                break
            elif  linebuf.find(code) > 0 and linebuf[0:1]:
                if (method == 'add' and linebuf[0:1] == '+') \
                or (method == 'del' and linebuf[0:1] == '-'):
                    find=True
                    break

        if (find):
            break

        latestid = commitid

    if (find):
        print(git_show(latestid, file))

    else:
        print ("not found {} code[{}] in {}".format(method, code, file))