用 PowerShell 处理纯文本 - 1

原始文本:”data1”:111,”data2”:22,”data3”:3,”data4”:4444444,”data5”:589
要求:转换成对象

方法一,采用字符串运算及 ConvertFrom-StringData 命令:

$rawTxt='"data1":111,"data2":22,"data3":3,"data4":4444444'
$rawTxt -split ',' | ForEach-Object {
   $temp= $_ -split ':'
   "{0}={1}" -f $temp[0].Substring(1,$temp[0].Length-2),$temp[1]
} | ConvertFrom-StringData

方法二,采用正则表达式,使用.NET的方法:

$rawTxt = '"data1":111,"data2":22,"data3":3,"data4":4444444,"data5":589'
$regex = [regex] '"(?<name>\w*)":(?<value>\d*),?'
$match = $regex.Match($rawTxt)
while ($match.Success) {
    [PSCustomObject]@{
        Name = $match.Groups['name'].Value
        Value = $match.Groups['value'].Value
    }
    $match = $match.NextMatch()
} 

方法三,采用正则表达式,使用 Select-String Cmdlet:

Select-String -InputObject $rawTxt -Pattern $regex -AllMatches | % {
    $_.Matches
} | % {
   [PSCustomObject]@{
        Name = $_.Groups['name'].Value
        Value = $_.Groups['value'].Value
    }
}

三者的执行结果都是这样:

Name          Value
----          -----
data1         111
data2         22
data3         3
data4         4444444
data5         589

原命题参见:PowerShell 文本处理实例(三)

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