提取三个单引号之间的文本

Question

我在文件中有以下内容

description: '''
        This rule forbids throwing string literals or interpolations. While
        JavaScript (and CoffeeScript by extension) allow any expression to
        be thrown, it is best to only throw <a
        href="https://developer.mozilla.org
        /en/JavaScript/Reference/Global_Objects/Error"> Error</a> objects,
        because they contain valuable debugging information like the stack
        trace. Because of JavaScript's dynamic nature, CoffeeLint cannot
        ensure you are always throwing instances of <tt>Error</tt>. It will
        only catch the simple but real case of throwing literal strings.
        <pre>
        <code># CoffeeLint will catch this:
        throw "i made a boo boo"

        # ... but not this:
        throw getSomeString()
        </code>
        </pre>
        This rule is enabled by default.
        '''

与此文件中的其他一些内容。

我通过sed -n "/'''/,/'''/p" $1（$1文件在哪里）在我的shell脚本中提取了这部分。

这给了我一个内容作为一个班轮的变量

description: ''' This rule forbids throwing string literals or interpolations. While JavaScript (and CoffeeScript by extension) allow any expression to be thrown, it is best to only throw <a href="https://developer.mozilla.org /en/JavaScript/Reference/Global_Objects/Error"> Error</a> objects, because they contain valuable debugging information like the stack trace. Because of JavaScript's dynamic nature, CoffeeLint cannot ensure you are always throwing instances of <tt>Error</tt>. It will only catch the simple but real case of throwing literal strings. <pre> <code># CoffeeLint will catch this: throw "i made a boo boo" # ... but not this: throw getSomeString() </code> </pre> This rule is enabled by default. '''

我现在如何提取 之间的部分'''？

或者有没有更好的方法从多行文件中检索它？

我在 Mac El Captain 10.11.2 和 GNU bash，版本 3.2.57(1)-release (x86_64-apple-darwin15)

Answer 1

perl -l -0777 -ne "print for /'''(.*?)'''/gs" file

将提取（并打印后跟换行符）每对 ''' 之间的部分。

请注意，perl在开始处理之前将整个文件存储在内存中，因此该解决方案可能不适用于非常大的文件。

Answer 2

试试这个，如果你有gawk或mawk可以使用：

gawk -v "RS='''" 'FNR%2==0' file

这假设'''文件中没有其他-s。

说明：它将记录分隔符设置为三个单引号，如果记录数为偶数则打印。

不幸的是，它不适用于所有awk实现，因为多字符记录分隔符不是POSIX awk.