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【PowerShell】文字列の読みがなを取得する

Last updated at Posted at 2020-09-19

できたもの

> "納豆(遺伝子組み換えでない)"|Get-ReadingWithSudachi|fl

Line     : 納豆(遺伝子組み換えでない)
Reading  : ナットウ(イデンシクミカエデナイ)
Tokenize : 納豆(ナットウ)/(/遺伝子(イデンシ)/組み換え(クミカエ)/で/ない/)
Markup   : <p><ruby>納豆<rt>ナットウ</rt></ruby>(<ruby>遺伝子<rt>イデンシ</rt></ruby>
           <ruby>組み換え<rt>クミカエ</rt></ruby>でない)</p>

コード

環境:

> $PSVersionTable

Name                           Value
----                           -----
PSVersion                      7.0.3
PSEdition                      Core
GitCommitId                    7.0.3
OS                             Microsoft Windows 10.0.18362
Platform                       Win32NT
PSCompatibleVersions           {1.0, 2.0, 3.0, 4.0…}
PSRemotingProtocolVersion      2.3
SerializationVersion           1.1.0.1
WSManStackVersion              3.0

以前に書いた、 SudachiPy での形態素解析を呼び出します(【PowerShell】 SudachiPy で形態素解析する)。

function Get-ReadingWithSudachi {
    param (
        [switch]$readingOnly,
        [switch]$ignoreParen
    )
    $ret = New-Object System.Collections.ArrayList
    $tokenizedResults = $input | Invoke-SudachiTokenizer -ignoreParen:$ignoreParen
    foreach ($result in $tokenizedResults) {
        $reading = New-Object System.Text.StringBuilder
        $tokenize = New-Object System.Collections.ArrayList
        $markup = New-Object System.Collections.ArrayList

        foreach ($token in $result.parsed) {

            $tokenSurface = $token.surface
            if ($token.pos -match "記号|空白" -or $tokenSurface -match "^([ァ-ヴ・ー]|[a-zA-Za-zA-Z]|[0-90-9]|[\W\s])+$") {
                $tokenReading = $tokenSurface
                $tokenInfo = $tokenSurface
                $tokenMarkup = $tokenSurface
            }
            elseif (-not $token.reading) {
                $tokenReading = $tokenSurface
                $tokenInfo = "$($tokenSurface)(?)"
                $tokenMarkup = $tokenSurface
            }
            else {
                $tokenReading = $token.reading
                $tokenInfo = ($tokenSurface -match "^[ぁ-ん]+$")?
                    $tokenSurface :
                    "$($tokenSurface)($tokenReading)"
                $tokenMarkup = ($tokenSurface -match "^[ぁ-ん]+$")?
                    $tokenSurface :
                    "<ruby>{0}<rt>{1}</rt></ruby>" -f $tokenSurface, $tokenReading
            }
            $reading.Append($tokenReading) > $null
            $tokenize.Add($tokenInfo) > $null
            $markup.Add($tokenMarkup) > $null
        }

        $ret.Add([PSCustomObject]@{
            Line = $result.line
            Reading = $reading.ToString()
            Tokenize = $tokenize -join "/"
            Markup = "<p>{0}</p>" -f ($markup -join "")
        }) > $null

    }

    return ($readingOnly)? $ret.reading : $ret
}

html マークアップ

202009192183358.png

たまにこのような感じで専門用語の解析に失敗します。

1つ2つであれば目視でチェックできますが、数百行を処理するとなると困るので、 Markup というプロパティで html マークアップを吐き出すようにしました。

(cat hogehoge.txt |Get-ReadingWithSudachi).markup|Out-File hogehoge.html

202009192184427.png

上記のようにして html 化して、ブラウザで確認すれば多少は見落としが減る…と信じています。

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