如何使用通配符删除C中的多个文件? [英] How to remove multiple files in C using wildcards?

问题描述

C中是否可以使用 * (通配符)删除(使用 remove())多个文件?我有一组全部以索引开头的文件.例如: Index1.txt ， Index-39.txt 等.它们都以Index开头，但我不知道后面跟着什么.同一目录中还有其他文件，因此无法删除所有文件.

Is there any way in C to remove (using remove()) multiple files using a * (wildcards)? I have a set of files that all start with Index. For example: Index1.txt, Index-39.txt etc. They all start with Index but I don't know what text follows. There are also other files in the same directory so deleting all files won't work.

我知道您可以读取目录，循环访问每个文件名，读取前5个字符，进行比较，如果合适，则将其删除，但是，有没有更简单的方法(这是我目前正在做的事情)吗?

I know you can read the directory, iterate each file name, read the the first 5 chars, compare and if it fits then delete, but, is there an easier way (this is what I currently do by the way)?

^{这是标准的C语言，因为代码可以在Linux和Windows上运行.}

推荐答案

如您所指出的，您可以使用diropen，dirread，dirclose来访问目录内容，自己的功能(或将通配符转换为regex并使用一个正则表达式库)匹配，然后取消链接以删除.

As you point out you could use diropen, dirread, dirclose to access the directory contents, a function of your own (or transform the wildcards into a regex and use a regex library) to match, and unlink to delete.

没有标准的方法可以更轻松地做到这一点.可能有图书馆，但它们不会比您正在做的事更有效率.通常，文件查找功能采用回调，您可以在其中提供代码的匹配和操作部分.您只需要保存循环即可.

There isn't a standard way to do this easier. There are likely to be libraries, but they won't be more efficient than what you're doing. Typically a file finding function takes a callback where you provide the matching and action part of the code. All you'd be saving is the loop.

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