PowerShellからWikipediaを検索するスクリプト

<#
.SYNOPSIS
Wikipediaでキーワード検索

.EXAMPLE
.\QueryWikipedia.ps1 -SearchWord "福澤諭吉"

.OUTPUTS
string[]

.PARAMETER SearchWord
検索文字

.LINK
 https://ja.wikipedia.org/w/api.php

#>
param(
    [string]
    $SearchWord,
    [switch]
    $Help
)
if ($Help -Or $SearchWord -eq "") {
    Get-Help $PSCommandPath
    Exit 1
}

$uriStr = @"
 https://ja.wikipedia.org/w/api.php?format=xml&action=query&prop=revisions&titles=$SearchWord&rvprop=content&rvparse
"@
$result = Invoke-RestMethod -Uri $uriStr
$revisions = ($result.api.query.pages.page | Select-Object -First 1).revisions
if ($revisions -eq $null) {
    ""
} else {
    $html = ($revisions | Select-Object -First 1).rev."#text" | ConvertFrom-HTML
    $html.InnerText    
}