如何在Perl中解析带引号和不带引号的参数？ [英] How to parse quoted as well as unquoted arguments in Perl?

问题描述

我希望我的perl脚本正确地将两个用空格分隔的命令行参数解析为两个变量：

I want my perl script to correctly parse two command line arguments separated by a space into two variables:

$ cat 1.pl
print "arg1 = >$ARGV[0]<\n";
print "arg2 = >$ARGV[1]<\n";
$ perl 1.pl a b
arg1 = >a<
arg2 = >b<
$ perl 1.pl "a b"
arg1 = >a b<
arg2 = ><
$

是否有一种通用的处理方式，而不是试图检测报价是否

Is there a generic way of dealing with this rather than trying to detect whether quotes were used or not?

推荐答案

数据通过外壳传递给Perl。

The data is passed to Perl by the shell.

• 程序ab 将发送 a 和 b


• 程序'a b'将发送 ab


• 程序 ab 将发送 ab


• 程序a\ b 将发送 ab

• program a b will send a and b
• program 'a b' will send a b
• program "a b" will send a b
• program a\ b will send a b

Perl拥有AFAIK，无法分辨出最后三个之间的差异。

Perl has, AFAIK, no way of telling the difference between any of the last three.

您可以分割每个关于空格的参数，这将获得您所描述的效果……但这将意味着以不同于其他所有应用程序的方式工作。

You could split every argument on spaces, and that would get the effect you are describing … but it would mean working in a different way to every other application out there.

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