用于删除 C++ 注释的 sed 脚本:脚本重复行 [英] Sed script for delete C++ comments: script duplicate the lines

问题描述

我使用这个脚本删除所有带有 sed 的 C/C++ 注释:

Im using this script for delete all C/C++ comments with sed:

http://sed.sourceforge.net/grabbag/scripts/remccoms3.sed

sed -i -f remccoms3.sed Myfile.cpp

但是这个脚本复制了所有的行，例如:

But this script duplicate all the lines, example:

/*-------------------------------------------------------------------------------
This file is part of MyProject.
Author Worvast 
#-------------------------------------------------------------------------------*/

#include <fstream>
#include <sstream>

//Other files
#include "Data.h"
#include "utility.h"

  // Open input file
  std::ifstream input_file;

转换为:

#include <fstream>
#include <fstream>
#include <sstream>
#include <sstream>


#include "Data.h"
#include "Data.h"
#include "utility.h"
#include "utility.h"


  std::ifstream input_file;
  std::ifstream input_file;

老实说，我不明白 SED 两者都知道错误在哪里.这个问题有什么想法或解决方案吗?

And to be honest I do not understand SED both to understand where is the error. Any idea or solution to this problem?

推荐答案

运行 sed 脚本的预期命令行是 /bin/sed -nf(来自社帮线).

The intended command line to run that sed script is /bin/sed -nf (from the shebang line).

您的命令 (sed -i -f remccoms3.sed) 省略了 -n 参数.

Your command (sed -i -f remccoms3.sed) leaves out the -n argument.

sed 的 -n 参数是

-n, --quiet, --silent

-n, --quiet, --silent

禁止自动打印模式空间

所以没有它你会得到正常的打印和脚本的打印.

so without that you get the normal printing and the script's printing.

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