Parsing git log log samples using Python

Using Git to manage the development of the project, git log is a very useful ' history ' material, where demand is coming from, and we want to have a custom filter for git log. This script is to complete this type of task. For a commit in all branch of a repo, the script will collate a class of commits with the bug ID in the message and provide additional Search_key for custom filtering.

The code is as follows:

#-*-Coding:utf-8-*-
# Created by Vince67 feb.2014
# nuovince@gmail.com

Import re
Import OS
Import subprocess

def run (Project_dir, Date_from, date_to, Search_key, filename):
Bug_dic = {}
Bug_branch_dic = {}
try: Os.chdir (project_dir)
except Exception, E:
Raise e
branches_list = []
Branches_list = get_branches ()
for branch in branches_list:
Bug_branch_dic = Deal_branch (Date_from,
date_to,
Branch,
Search_key)
F or item in Bug_branch_dic:
If Item not in Bug_dic:
Bug_dic[item] = Bug_branch_dic[item]
Else:
Bug_dic[item ] + = Bug_branch_dic[item]
log_output (filename, bug_dic)

# Abstract log of one branch
def deal_branch (Date_from, date_to, Branch, Search_key):
Try
Os.system (' git checkout ' + branch)
Os.system (' git pull ')
Except Exception, error:
Print error
Cmd_git_log = ["Git",
"Log",
"--stat",
"--no-merges",
"-M",
"--after=" +date_from,
"--before=" +date_to]
proc = subprocess. Popen (Cmd_git_log,
Stdout=subprocess. PIPE,
Stderr=subprocess. PIPE)
stdout, stderr = Proc.communicate ()
Bug_branch_dic = Deal_lines (Date_from,
Date_to,
Search_key,
StdOut
Return Bug_branch_dic

# Write commits log to file
def log_output (filename, bug_dic):
fi = open (filename, ' W ')
For item in Bug_dic:
M1 = '--' + + ' BUG: ' + Item + '--' *20 + ' \ n '
Fi.write (M1)
For commit in Bug_dic[item]:
Fi.write (Commit)
Fi.close ()

# Analyze Log
def deal_lines (Date_from, date_to, Search_key, stdout):
Bug_dic = {}
for line in Stdout.s Plit (' Commit '):
If Re.search (' Bug: \d+ ', line) was not none and Re.search (Search_key, line) was not none:
bug_id = Line.split (' Bug: ') [1].split (' \ n ') [0]
If bug_id not in Bug_dic:
bug_dic[bug_id] = [line]
Else:
Bug_dic[bu G_ID] + = [line]
return bug_dic

# Get all branches of a project
Def get_branches ():
Branch_list = []
branches = []
Tmp_str = '
Try:
Cmd_git_remote = ' git Remote show origin '
proc = subprocess. Popen (Cmd_git_remote.split (),
Stdout=subprocess. PIPE,
Stderr=subprocess. PIPE)
stdout, stderr = Proc.communicate ()
Tmp_str = Stdout.split (' Local branches configured ') [0]
Try:
tmp _str = Tmp_str.split (' remote branches:\n ') [1]
except:
Tmp_str = tmp_str.split (' remote branch:\n ') [1]
Branches = Tmp_str.split (' \ n ')
for branch in branches[0:-1]:
If Re.search (' tracked ', branch) are not None:
Bra nch = Branch.replace (' tracked ', '). Strip (')
Branch_list.append (branch)
except Exception, error:
If branch _list = = []:
print "Can not get any branch!"
Return branch_list

if __name__ = = ' __main__ ':
# Path of the. Git project. Example: "/home/username/projects/jekyll_vincent"
Project_dir = ""
Date_from = "2014-01-25"
date_to = "2014-02-26"
# only Search ' bugs: \d+ ' for default
Search_key = ""
# Name of output file. Example: "/home/username/jekyll_0125_0226.log"
filename = ""
Run (Project_dir, Date_from, date_to, search_key, filename)

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