删除Java源文件中全部注释的Python脚本

142536a

　　同事想删除一个Java项目中的全部注释（坏 ），让我帮忙想想办法。
　　没找不到合适工具，就写了这个脚本，遍历指定目录，查找*.java文件，删除其中/* */之间，及// 至行末的内容。
　　（用之前要改改其中的路径）：
#!D:\Python32# 过滤JAVA程序中的注释# 如果字符串中有注释符号的话会有问题。import osimport reimport io# 改这个目录！！！top_dir = "E:\\java_comments_trim\\";# 状态S_INIT              = 0;S_SLASH             = 1;S_BLOCK_COMMENT     = 2;S_BLOCK_COMMENT_DOT = 3;S_LINE_COMMENT      = 4;S_STR               = 5;S_STR_ESCAPE        = 6;def trim_dir(path):print("目录：" + path);for root, dirs, files in os.walk(path):for name in files:trim_file(os.path.join(root, name))#for name in dirs:#trim_dir(os.path.join(root, name))def trim_file(path):print("文件：" + path);if re.match(".*java{1}quot;, path):print("  处理");else:print("  忽略");return;bak_file = path + ".bak";os.rename(path, bak_file);fp_src = open(bak_file);fp_dst = open(path, 'w');state = S_INIT;for line in fp_src.readlines():for c in line:if state == S_INIT:if c == '/':state = S_SLASH;elif c == '"':state = S_STR;fp_dst.write(c);else:fp_dst.write(c);elif state == S_SLASH:if c == '*':state = S_BLOCK_COMMENT;elif c == '/':state = S_LINE_COMMENT;else:fp_dst.write('/');fp_dst.write(c);elif state == S_BLOCK_COMMENT:if c == '*':state = S_BLOCK_COMMENT_DOT;elif state == S_BLOCK_COMMENT_DOT:if c == '/':state = S_INIT;else:state = S_BLOCK_COMMENT;elif state == S_LINE_COMMENT:if c == '\n':state = S_INIT;elif state == S_STR:if c == '\\':state = S_STR_ESCAPE;elif c == '"':state = S_INIT;fp_dst.write(c);elif state == S_STR_ESCAPE:# 这里未完全实现全部序列，如\oNNN \xHH \u1234 \U12345678，但没影响state = S_STR; fp_dst.write(c);fp_src.close();fp_dst.close();trim_dir(top_dir);