无法仅捕获两个引号之一 [英] Unable to capture just one of two quotes

问题描述

所以我正在处理

So I'm working off of this blog post in an attempt to parse ini files. It works for the most part, but I'm running into a specific problem I don't know enough about regex to solve.

function Get-IniContent
{
    [CmdletBinding()]
    [OutputType([hashtable])]
    param
    (
        [Parameter(Position = 0, Mandatory, ValueFromPipelineByPropertyName)]
        [ValidateScript({Test-Path -Path $PSItem -PathType Leaf})]
        [Alias('FullName')]
        [string]
        $Path
    )

    process
    {
        $ini = @{}

        switch -Regex -File $Path
        {
            '^\[(?<Section>.+)\]$'
            {
                $section = $Matches['Section']
                $ini[$section] = @{}
                $commentCount = 0
            }

            '^;(?<Comment>.*)'
            {
                if (-not $section)
                {
                    $section = 'NoSection'
                    $ini[$section] = @{}
                }
                $commentCount += 1
                $ini[$section]["Comment$commentCount"] = $Matches['Comment']
            }

            '(?<Key>.+?)\s*=\s*(?<Value>.*)'
            {
                if (-not $section)
                {
                    $section = 'NoSection'
                    $ini[$section] = @{}
                }

                $ini[$section][$Matches['Key']] = $Matches['Value'] -replace
                    '^"(.*)"$', '$1' -replace
                    '\s*(.*)\s*', '$1'
            }
        }

        $ini
    }
}

---

问题:

在本节中:

---

The problem:

In this section:

$ini[$section][$Matches['Key']] = $Matches['Value'] -replace
     '^"(.*)"$','$1' -replace
     '\s*(.*)\s*','$1'

我遇到的情况是我的ini文件可能具有带引号的值，然后带有带引号的字符串:

I'm running into cases where my ini files may have quoted values that then have strings with quotes:

Key="  this value="something here""

我想要一个正则表达式字符串(最好是在开关捕获中)，以避免那些双引号引起来.

I want a single regex string (ideally in the switch capture) to avoid those surrounding double-quotes.

我尝试在值的两边使用可选字符"?，但是它只能跳过起始引号，而不能跳过结束引号.

I tried using the optional character "? around both sides of the value, but it only managed to skip the starting quote, but not the ending quote.

示例字符串:

KeyName = "value:"ac-dii-sk""

尝试的模式:

$HashPattern = '\s*(?<Key>.+)\s*=\s*"?\s*(?<Value>.*)\s*"?\s*'

结果:

$Matches['Key']   = KeyName
$Matches['Value'] = value:"ac-dii-sk""

所需结果:

$Matches['Key']   = KeyName
$Matches['Value'] = value:"ac-dii-sk"

推荐答案

让我们尝试一下平衡捕获组.

(?<Key>.+?)\s*=\s*(?<open>")?(?<Value>.*?)(?<close-open>")?$

捕获的值:value:"ac-dii-sk"

Test it Online

Input: KeyName = "value:"ac-dii-sk""
Captured Value: value:"ac-dii-sk"

输入:KeyName = "value:"ac-dii-sk"(少了1个引号)
值:value:"ac-dii-sk

Input: KeyName = "value:"ac-dii-sk" (1 fewer end quote)
Value: value:"ac-dii-sk

输入:KeyName = value:"ac-dii-sk""(缺少引号)
值:value:"ac-dii-sk""

Input: KeyName = value:"ac-dii-sk"" (missing beginning quote)
Value: value:"ac-dii-sk""

输入:KeyName = value:"ac-dii-sk"(不带引号)
值:value:"ac-dii-sk"

Input: KeyName = value:"ac-dii-sk" (no surrounding quotes)
Value: value:"ac-dii-sk"

正如我在评论中提到的，我建议您仅使用现有的库来解析INI文件.这是PSGallery中的2个:

As I mentioned in a comment, I recommend you just use an existing library to parse INI files. Here are 2 from PSGallery:

• 碳
• PsIni

• Carbon
• PsIni

这篇关于无法仅捕获两个引号之一的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！