Powershell函数捕获没有Return/Newline的字符串长度

Question

我正在使用 Powershell 为 here-string 中的特定单词着色。除了其中包含 Return/Newline 个字符的单词外，它的工作正常。如果没有这些字符，我如何计算单词的长度？

下面是我正在使用的函数和测试数据。我希望第二行的 'is' 也有颜色，但我认为 Return/Newline 导致了长度不匹配的问题。

感谢您提供的所有帮助！谢谢！ -JFV

Function ColorSpecificWordsOutput {
param(
    [Parameter(Mandatory=$true, Position=0)]
    [string]$InputText, 

    [Parameter(Mandatory=$true, Position=1)]
    $KeyColor
    )

$keys = $keycolor.keys -join "|"

#Split on spaces, pipe to foreach-object
$InputText.Split(" ") | ForEach-Object {
    #If word matches one of the $keys
    If ($_ -imatch $keys) {
        #Retrieve word as string from $keys
        [string]$m = $matches.Values[0].trim()

        #If length of word equals the $keys word
        If($_.Length -eq $m.Length) {
            #Write out the word with the mapped forground color without a new line
            Write-Host "$_ " -ForegroundColor $keyColor.item($m) -NoNewline
        }
        #Otherwise, just write the word without color
        Else { Write-Host "$_ " -NoNewline }
    }
    #Otherwise, just write the word without color
    else {
        Write-Host "$_ " -NoNewline
    }
}
}

$w = @"
This color is Yellow: test 
Is it correct ?
"@

$find = @{
is = "Cyan"
test = "Yellow"
correct = "Green"
}

ColorSpecificWordsOutput -InputText $w -KeyColor $find

Answer 1

尝试 trim 在使用每个单词之前记住它，这样白色 space 就不是一个因素

Function ColorSpecificWordsOutput {
param(
    [Parameter(Mandatory=$true, Position=0)]
    [string]$InputText, 

    [Parameter(Mandatory=$true, Position=1)]
    $KeyColor
    )

    $keys = $keycolor.keys -join "|"

    #Split on spaces, pipe to foreach-object
    $InputText.Split(" ") | ForEach-Object {

        $word = $_.Trim() # Trim current word

        #If word matches one of the $keys
        If ($word -imatch $keys) {
            #Retrieve word as string from $keys
            [string]$m = $matches.Values[0].trim()

            #If length of word equals the $keys word
            If($word.Length -eq $m.Length) {
                #Write out the word with the mapped forground color without a new line
                Write-Host "$word " -ForegroundColor $keyColor.item($m) -NoNewline
            }
            #Otherwise, just write the word without color
            Else { Write-Host "$word " -NoNewline }
        }
        #Otherwise, just write the word without color
        else {
            Write-Host "$word " -NoNewline
        }
    }
}

$w = @"
This color is Yellow: test 
Is it correct ?
"@

$find = @{
is = "Cyan"
test = "Yellow"
correct = "Green"
}

ColorSpecificWordsOutput -InputText $w -KeyColor $find

否则，您可以在进行长度比较时执行 trim

Function ColorSpecificWordsOutput {
param(
    [Parameter(Mandatory=$true, Position=0)]
    [string]$InputText, 

    [Parameter(Mandatory=$true, Position=1)]
    $KeyColor
    )

    $keys = $keycolor.keys -join "|"

    #Split on spaces, pipe to foreach-object
    $InputText.Split(" ") | ForEach-Object {
        $word = $_
        #If word matches one of the $keys
        If ($word -imatch $keys) {
            #Retrieve word as string from $keys
            [string]$m = $matches.Values[0].trim()

            #If length of word equals the $keys word
            If($word.Trim().Length -eq $m.Length) {#performing trim before comparison
                #Write out the word with the mapped forground color without a new line
                Write-Host "$word " -ForegroundColor $keyColor.item($m) -NoNewline
            }
            #Otherwise, just write the word without color
            Else { Write-Host "$word " -NoNewline }
        }
        #Otherwise, just write the word without color
        else {
            Write-Host "$word " -NoNewline
        }
    }
}

$w = @"
This color is Yellow: test 
Is it correct ?
"@

$find = @{
is = "Cyan"
test = "Yellow"
correct = "Green"
}

ColorSpecificWordsOutput -InputText $w -KeyColor $find

Powershell函数捕获没有Return/Newline的字符串长度

Powershell Function to capture length of string without Return/Newline

string

powershell

newline

powershell-5.0