[tools] 增加formatting自动化格式调整脚本（初版）

tools/tools/formatting.py

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+#
+# File      : formatting.py
+# This file is part of RT-Thread RTOS
+# COPYRIGHT (C) 2006 - 2018, RT-Thread Development Team
+#
+#  This program is free software; you can redistribute it and/or modify
+#  it under the terms of the GNU General Public License as published by
+#  the Free Software Foundation; either version 2 of the License, or
+#  (at your option) any later version.
+#
+#  This program is distributed in the hope that it will be useful,
+#  but WITHOUT ANY WARRANTY; without even the implied warranty of
+#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+#  GNU General Public License for more details.
+#
+#  You should have received a copy of the GNU General Public License along
+#  with this program; if not, write to the Free Software Foundation, Inc.,
+#  51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+#
+# Change Logs:
+# Date           Author       Notes
+# 2021-03-02     Meco Man     The first version
+# 2021-03-04     Meco Man     增加统一转换成UTF-8编码格式功能
+
+
+#本文件会自动对指定路径下的所有文件包括子文件夹的文件（仅针对.c.h）进行扫描
+#   1)将源文件编码统一为UTF-8;
+#   2)将TAB键替换为空格;
+#   3)将每行末尾多余的空格删除，并统一换行符为'\n'; 
+#使用时只需要双击本文件，输入要扫描的文件夹路径即可
+#不能保证100%全部成功转换为UTF-8，有一些编码特殊或识别不准确会在终端打印信息，需人工转换
+
+import os
+import chardet
+
+#用空格代替TAB键
+#这里并不是简单的将TAB替换成4个空格
+#空格个数到底是多少需要计算，因为TAB制表本身有自动对齐的功能
+def tab2spaces(line):
+    list_str = list(line) #字符串变成列表
+    i = list_str.count('\t')
+    
+    while i > 0:
+        ptr = list_str.index('\t')
+        del list_str[ptr]
+        space_need_to_insert = 4 - (ptr%4)
+        j = 0
+        while j < space_need_to_insert:
+            list_str.insert(ptr,' ')
+            j = j+1
+        
+        i = i-1
+
+    line = ''.join(list_str) #列表恢复成字符串
+    return line
+
+#删除每行末尾多余的空格 统一使用\n作为结尾
+def formattail(line):
+    line = line.rstrip()
+    line = line + '\n'
+    return line
+
+#对单个文件进行格式整理
+def format_codes(filename):
+    try:
+        file=open(filename,'r',encoding = 'utf-8')
+        file_temp=open('temp','w',encoding = 'utf-8')
+        for line in file:
+            line = tab2spaces(line)
+            line = formattail(line)
+            file_temp.write(line)
+        file_temp.close()
+        file.close()
+        os.remove(filename)
+        os.rename('temp',filename)
+
+def get_encode_info(file):
+    with open(file, 'rb') as f:
+        code = chardet.detect(f.read())['encoding']               
+        if code == 'EUC-JP': #chardet库容易将含着少量中文的英文字符文档识别为日语编码格式
+            code = 'GB2312' 
+        elif code == 'ISO-8859-1': #部分文件GB2312码会被识别成ISO-8859-1
+            code = 'GB2312'
+
+        if not (code == 'ascii' or code == 'utf-8' or code == 'GB2312' or code == 'Windows-1252'): # Windows-1252 是由于意法半导体是法国企业's的'是法语的'导致的
+            if code != None:
+                print('未处理，需人工确认：'+code+':'+file) #需要人工确认
+                code = None
+
+        return code
+
+#将单个文件转为UTF-8编码
+def conver_to_utf_8 (path):
+    try: 
+        info = get_encode_info(path)
+        if info == None:
+            return 0 #0 失败
+
+        file=open(path,'rb+')
+        data = file.read()
+        string = data.decode(info)
+        utf = string.encode('utf-8')
+        file.seek(0)
+        file.write(utf)
+        file.close()
+        return 1 #1成功
+    except UnicodeDecodeError:
+        print("UnicodeDecodeError未处理，需人工确认"+path)
+        return 0
+    except UnicodeEncodeError:
+        print("UnicodeEncodeError未处理，需人工确认"+path)
+        return 0
+
+# 递归扫描目录下的所有文件
+def traversalallfile(path):
+    filelist=os.listdir(path)
+    for file in filelist:
+        filepath=os.path.join(path,file)
+        if os.path.isdir(filepath):
+            traversalallfile(filepath)
+        elif os.path.isfile(filepath):
+            if filepath.endswith(".c") == True or filepath.endswith(".h") == True: #只处理.c和.h文件
+                if conver_to_utf_8(filepath) == 1: #先把这个文件转为UTF-8编码,1成功
+                    format_codes(filepath) #再对这个文件进行格式整理
+
+def formatfiles():
+    workpath = input('enter work path: ')
+    traversalallfile(workpath)
+
+if __name__ == '__main__':
+    formatfiles()