Question

背景：我使用PHPStylist缩进PHP代码，这通常很好。但是，当它找到带有许多参数的函数调用时，它会将所有这些参数放在一行上。例如，bind_param()调用很容易就是300个字符。

这与我们的编码样式指南不相符，它指示最大行长度为180个字符。

我们的缩进脚本已经有一个sed命令来清除PHPStylist留下的尾随空格，所以我在想，也可以打破太长的行，但只能用逗号？

示例输入：

function xyz()
{
    somecall($somevariable1, $somevariable1, $somevariable1, $somevariable1, $somevariable1, $somevariable1, $somevariable1, $somevariable1, $somevariable1);
}

示例输出：

function xyz()
{
    somecall($somevariable1, $somevariable1, $somevariable1, $somevariable1,
$somevariable1, $somevariable1, $somevariable1, $somevariable1, $somevariable1);
}

^{（如果脚本也可以在下一行中巧妙地缩进下一行，我会认为这很难在sed中进行。在awk，perl，python或其他常用工具中的解决方案也会非常受欢迎。）}

Answer 1

作为第一个建议，这样的事情？

sed 's/.\{70\}[^,]*,/&\
/g' file

--- ---编辑

对于缩进，您可以尝试：

sed -e 's/\(.\{70\}[^,]*,\)[[:blank:]]*/\1\
/g; tend' -e n  -e :end -e 's/\(^[[:blank:]]*\)\(.*\n\)/\1\2\1/ ' file

Answer 2

这个awk脚本会在最大行长度之前的最后一个逗号中分割行，如果愿意，可以将其设置为运行时参数。它将分割线比原始线条缩进了4个空格：

$ cat file
function xyz()
{
    somecall($somevariable1, $somevariable2, $somevariable3, $somevariable4, $somevariable5, $somevariable6, $somevariable7, $somevariable8, $somevariable9);

        somecall($somevariable1, $somevariable2, $somevariable3, $somevariable4, $somevariable5, $somevariable6, $somevariable7, $somevariable8, $somevariable9);
}

$ awk -f tst.awk file
function xyz()
{
    somecall($somevariable1, $somevariable2, $somevariable3,
        $somevariable4, $somevariable5, $somevariable6,
        $somevariable7, $somevariable8,
        $somevariable9);

        somecall($somevariable1, $somevariable2, $somevariable3,
                $somevariable4, $somevariable5, $somevariable6,
                $somevariable7, $somevariable8,
                $somevariable9);
}
$
$ cat tst.awk
BEGIN{ maxLength = (maxLength ? maxLength : 66) }

(length($0) > maxLength) && /,/ {
    indent = $0
    sub(/[^[:space:]].*/,"",indent)

    tail = $0
    while (tail ~ /[^[:space:]]/) {
        head = substr(tail,1,maxLength)
        sub(/,[^,]+$/,",",head)
        tail = substr(tail,length(head)+1)
        sub(/^[[:space:]]*/,indent"    ",tail)
        print head
    }
    next
}
1

$ awk -v maxLength=100 -f tst.awk file
function xyz()
{
    somecall($somevariable1, $somevariable2, $somevariable3, $somevariable4, $somevariable5,
        $somevariable6, $somevariable7, $somevariable8,
        $somevariable9);

        somecall($somevariable1, $somevariable2, $somevariable3, $somevariable4, $somevariable5,
                $somevariable6, $somevariable7, $somevariable8,
                $somevariable9);
}

$ awk -v maxLength=30 -f tst.awk file
function xyz()
{
    somecall($somevariable1,
        $somevariable2,
        $somevariable3,
        $somevariable4,
        $somevariable5,
        $somevariable6,
        $somevariable7,
        $somevariable8,
        $somevariable9);

        somecall($somevariable1,
                $somevariable2,
                $somevariable3,
                $somevariable4,
                $somevariable5,
                $somevariable6,
                $somevariable7,
                $somevariable8,
                $somevariable9);
}

断开长源行，但仅限逗号

2 个答案: