前言

本文介紹的是利用Python實現的一個小工具，用于分析Git commit log，獲得Git Project每個成員的簡單行為數據。

Warning：代碼量不能代表程序員能力水平！

啟動參數

共5個。

exec_git

Git Log命令：

git -C {} log --since={} --until={} --pretty=tformat:%ae --shortstat --no-merges -- {} > {}

填入參數，調用系統命令'os.system()'，輸出結果至本地臨時文件。讀取至內存，簡單的String Array。

parse

Git Log輸出有3種格式，對應3種正則表達式。

REPATTERN_FULL = r"/s(/d+)/D+(/d+)/D+(/d+)/D+/n"REPATTERN_INSERT_ONLY = r"/s(/d+)/D+(/d+)/sinsertion/D+/n"REPATTERN_DELETE_ONLY = r"/s(/d+)/D+(/d+)/sdeletion/D+/n"

遍歷得到的數據，首先構造一個以Author為Key，分析結果為Value的字典。

分析結果構造一個元祖，包括：

save_csv

簡單省略。

示例代碼：

#!/usr/local/bin/python3# -*- coding: utf-8 -*-'''Analyse git branch commit log, for every version, every person.'''import osimport sysimport reimport csvGIT_LOG = r'git -C {} log --since={} --until={} --pretty=tformat:%ae --shortstat --no-merges -- {} > {}'REPATTERN_FULL = r"/s(/d+)/D+(/d+)/D+(/d+)/D+/n"REPATTERN_INSERT_ONLY = r"/s(/d+)/D+(/d+)/sinsertion/D+/n"REPATTERN_DELETE_ONLY = r"/s(/d+)/D+(/d+)/sdeletion/D+/n"CSV_FILE_HEADER = ["Author", "Commit", "Insert", "Delete", "Loc"]def exec_git(repo, since, until, subdir): '''Execute git log commant, return string array.''' logfile = os.path.join(os.getcwd(), 'gitstats.txt') git_log_command = GIT_LOG.format(repo, since, until, subdir, logfile) os.system(git_log_command) lines = None with open(logfile, 'r', encoding='utf-8') as logfilehandler: lines = logfilehandler.readlines() return linesdef save_csv(stats, csvfile): '''save stats data to csv file.''' with open(csvfile, 'w', encoding='utf-8') as csvfilehandler: writer = csv.writer(csvfilehandler) writer.writerow(CSV_FILE_HEADER) for author, stat in stats.items():  writer.writerow([author, stat[0], stat[1], stat[2], stat[3]])def parse(lines): '''Analyse git log and sort to csv file.''' prog_full = re.compile(REPATTERN_FULL) prog_insert_only = re.compile(REPATTERN_INSERT_ONLY) prog_delete_only = re.compile(REPATTERN_DELETE_ONLY) stats = {} for i in range(0, len(lines), 3): author = lines[i] #empty = lines[i+1] info = lines[i+2] #change = 0 insert, delete = int(0), int(0) result = prog_full.search(info) if result:  #change = result[0]  insert = int(result.group(2))  delete = int(result.group(3)) else:  result = prog_insert_only.search(info)  if result:  #change = result[0]  insert = int(result.group(2))  delete = int(0)  else:  result = prog_delete_only.search(info)  if result:   #change = result[0]   insert = int(0)   delete = int(result.group(2))  else:   print('Regular expression fail!')   return loc = insert - delete stat = stats.get(author) if stat is None:  stats[author] = [1, insert, delete, loc] else:  stat[0] += 1  stat[1] += insert  stat[2] += delete  stat[3] += loc return statsif __name__ == "__main__": print('gitstats begin') if len(sys.argv) != 6: print('Invalid argv parameters.') exit(0) REPO = os.path.join(os.getcwd(), sys.argv[1]) SINCE = sys.argv[2] UNTIL = sys.argv[3] SUB_DIR = sys.argv[4] CSV_FILE = os.path.join(os.getcwd(), sys.argv[5]) LINES = exec_git(REPO, SINCE, UNTIL, SUB_DIR) assert LINES is not None STATS = parse(LINES) save_csv(STATS, CSV_FILE) print('gitstats done')