{"id":608,"date":"2023-01-05T13:22:22","date_gmt":"2023-01-05T04:22:22","guid":{"rendered":"https:\/\/kamita.net\/program\/?p=608"},"modified":"2023-01-05T14:10:24","modified_gmt":"2023-01-05T05:10:24","slug":"javascript-%e6%96%87%e5%ad%97%e3%82%b3%e3%83%bc%e3%83%89%e3%81%ae%e8%87%aa%e5%8b%95%e5%a4%89%e6%8f%9b","status":"publish","type":"post","link":"https:\/\/kamita.net\/program\/?p=608","title":{"rendered":"Javascript \u6587\u5b57\u30b3\u30fc\u30c9\u306e\u81ea\u52d5\u5909\u63db"},"content":{"rendered":"\n<p>\u3056\u3063\u304f\u308a\u3068\u30b3\u30fc\u30c9\u3092\u66f8\u3044\u3066\u3001\u8aac\u660e\u3057\u307e\u3059\u3002<br><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>   var file = this.files&#91;0];\n\n      \/\/ FileReader\u306e\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u3092\u4f5c\u6210\n      var reader = new FileReader();\n\n      \/\/ \u30d5\u30a1\u30a4\u30eb\u306e\u8aad\u307f\u8fbc\u307f\u304c\u5b8c\u4e86\u3057\u305f\u3068\u304d\u306e\u51e6\u7406\n      reader.onload = function(e) {\n        \/\/ \u30d5\u30a1\u30a4\u30eb\u306e\u5185\u5bb9\u3092\u53d6\u5f97\n        var fileContent = e.target.result;\n        fileContent=str2Array(fileContent);\n\n        \/\/ 'fileContents' \u306e\u6587\u5b57\u30b3\u30fc\u30c9\u3092\u5224\u5b9a\u3059\u308b\n        var encoding = Encoding.detect(fileContent);\n\n        \/\/ \u6587\u5b57\u30b3\u30fc\u30c9\u3092 UNICODE \u306b\u5909\u63db\u3059\u308b\n        fileContent = Encoding.convert(fileContent, {to: 'UNICODE', from: encoding});\n        \n\n        fileContent=Encoding.codeToString(fileContent);\n      \/\/ \u30d5\u30a1\u30a4\u30eb\u3092\u8aad\u307f\u8fbc\u3080\n      reader.readAsBinaryString(file);\n    });\n\nfunction str2Array(str) {\n  \/\/ \u7a7a\u306e\u914d\u5217\u3092\u7528\u610f\u3059\u308b\n  var array = &#91;];\n  \/\/ \u6587\u5b57\u5217\u306e\u6587\u5b57\u6570\u3060\u3051\u7e70\u308a\u8fd4\u3059\n  for (var i = 0; i &lt; str.length; i++) {\n    \/\/ \u6587\u5b57\u5217\u306e i \u756a\u76ee\u306e\u6587\u5b57\u306e\u6587\u5b57\u30b3\u30fc\u30c9\u3092\u53d6\u5f97\u3059\u308b\n    var charCode = str.charCodeAt(i);\n    \/\/ \u914d\u5217\u306b\u6587\u5b57\u30b3\u30fc\u30c9\u306e\u5024\u3092\u8ffd\u52a0\u3059\u308b\n    array.push(charCode);\n  }\n  \/\/ \u914d\u5217\u3092\u8fd4\u3059\n  return array;\n}\n<\/code><\/pre>\n\n\n\n<h3>\u8aac\u660e<\/h3>\n\n\n\n<p><\/p>\n\n\n\n<p>\u307e\u305a\u306f\u3001\u30d5\u30a1\u30a4\u30eb\u3092\u30d0\u30a4\u30ca\u30ea\u306e\u6587\u5b57\u5217\u3068\u3057\u3066\u8aad\u307f\u8fbc\u307f\u307e\u3059\u3002<br>reader.readAsBinaryString(file);<\/p>\n\n\n\n<p><\/p>\n\n\n\n<p>\u6b21\u306b\u3001str2Array\u3092\u4f7f\u3063\u3066\u3001<br>\u6587\u5b57\u5217\u3092\u53d7\u3051\u53d6\u308a\u3001\u305d\u306e\u6587\u5b57\u5217\u3092\u6587\u5b57\u30b3\u30fc\u30c9\u306e\u5024\u306e\u914d\u5217\u306b\u5909\u63db\u3059\u308b<br>\u6587\u5b57\u4e00\u3064\u4e00\u3064\u304c\u3001\u756a\u53f7\u306b\u5909\u308f\u308b\u3088\u3046\u306a\u5909\u63db\u3067\u3059\u3002<br>\u95a2\u6570\u5185\u3067\u3001<br>str.charCodeAt(i) \u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u3063\u3066\u3001\u6587\u5b57\u5217 str \u306e i \u756a\u76ee\u306e\u6587\u5b57\u306e\u6587\u5b57\u30b3\u30fc\u30c9\u3092\u53d6\u5f97\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u305d\u3057\u3066\u3001\u6587\u5b57\u30b3\u30fc\u30c9\u3092\u5224\u5b9a\u3057\u3066\u304b\u3089\u3001UNICODE\u306e\u6587\u5b57\u30b3\u30fc\u30c9\u306e\u6587\u5b57\u5217\u306b\u76f4\u3057\u307e\u3059\u3002<br><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>    \/\/ 'fileContents' \u306e\u6587\u5b57\u30b3\u30fc\u30c9\u3092\u5224\u5b9a\u3059\u308b\n    var encoding = Encoding.detect(fileContent);\n\n    \/\/ \u6587\u5b57\u30b3\u30fc\u30c9\u3092 UNICODE \u306b\u5909\u63db\u3059\u308b\n    fileContent = Encoding.convert(fileContent, {to: 'UNICODE', from: encoding});\n\n<\/code><\/pre>\n\n\n\n<p>\u6700\u5f8c\u306bUNICODE\u3060\u3063\u305f\u3082\u306e\u3092\u6587\u5b57\u5217(UTF-8)\u306b\u5909\u63db\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<p>Encoding\u306e\u3082\u306e\u306f\u3001\u30e9\u30a4\u30d6\u30e9\u30ea\u3092\u5229\u7528\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u5143\u30b5\u30a4\u30c8<br>https:\/\/polygon-planet-log.blogspot.com\/2012\/04\/javascript.html<\/p>\n\n\n\n<p><br>\u53c2\u8003\u306b\u3055\u305b\u3066\u3044\u305f\u3060\u3044\u305f\u30b5\u30a4\u30c8<br><a href=\"https:\/\/gunmagisgeek.com\/blog\/javascript\/4525\">https:\/\/gunmagisgeek.com\/blog\/javascript\/4525<\/a><\/p>\n\n\n\n<p>\u3053\u3061\u3089\u306b\u3082\u3001\u30b5\u30f3\u30d7\u30eb\u304c\u3042\u308a\u307e\u3059\u306d\u3002\u3053\u3061\u3089\u304c\u672c\u5bb6\u3067\u3059\u306d\u3002<br><a href=\"https:\/\/github.com\/polygonplanet\/encoding.js\/blob\/master\/README_ja.md#file-api-%E3%82%92%E4%BD%BF%E7%94%A8%E3%81%97%E3%81%9F%E3%83%95%E3%82%A1%E3%82%A4%E3%83%AB%E3%81%AE%E6%96%87%E5%AD%97%E3%82%B3%E3%83%BC%E3%83%89%E5%88%A4%E5%AE%9A%E5%A4%89%E6%8F%9B%E4%BE%8B\">\u672c\u5bb6\u30b5\u30f3\u30d7\u30eb\u3000\u3084\u308a\u65b9\u304c\u9055\u3046<\/a><\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<p>\u30a2\u30c3\u30d7\u30ed\u30fc\u30c9\u3059\u308b\u30d5\u30a1\u30a4\u30eb\u306e\u6587\u5b57\u30b3\u30fc\u30c9\u3092\u7533\u8acb\u3057\u3066\u3082\u3089\u3048\u308b\u306a\u3089\u3001<br>readAsText()\u306e\u7b2c\u4e8c\u5f15\u6570\u306b\u2019Shift_JIS\u2019\u306a\u3069\u3092\u6307\u5b9a\u3057\u3066\u3001\u53d6\u5f97\u3059\u308b\u3063\u3066\u3044\u3046\u306e\u3082\u3042\u308a\u3067\u3059\u306d\u3002<br>\u9065\u304b\u306b\u697d\u3067\u3059\u306d\u3002<br>\u6587\u5b57\u30b3\u30fc\u30c9\u304c\u308f\u304b\u3089\u306a\u3044\u4eba\u304c\u30e6\u30fc\u30b6\u30fc\u306a\u3089\u3001\u3084\u306f\u308a\u81ea\u52d5\u5909\u63db\u304b\u306a\u3042\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u3056\u3063\u304f\u308a\u3068\u30b3\u30fc\u30c9\u3092\u66f8\u3044\u3066\u3001\u8aac\u660e\u3057\u307e\u3059\u3002 \u8aac\u660e \u307e\u305a\u306f\u3001\u30d5\u30a1\u30a4\u30eb\u3092\u30d0\u30a4\u30ca\u30ea\u306e\u6587\u5b57\u5217 &hellip; <a href=\"https:\/\/kamita.net\/program\/?p=608\">Continued<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[7],"tags":[],"_links":{"self":[{"href":"https:\/\/kamita.net\/program\/index.php?rest_route=\/wp\/v2\/posts\/608"}],"collection":[{"href":"https:\/\/kamita.net\/program\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/kamita.net\/program\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/kamita.net\/program\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/kamita.net\/program\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=608"}],"version-history":[{"count":5,"href":"https:\/\/kamita.net\/program\/index.php?rest_route=\/wp\/v2\/posts\/608\/revisions"}],"predecessor-version":[{"id":615,"href":"https:\/\/kamita.net\/program\/index.php?rest_route=\/wp\/v2\/posts\/608\/revisions\/615"}],"wp:attachment":[{"href":"https:\/\/kamita.net\/program\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=608"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kamita.net\/program\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=608"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kamita.net\/program\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=608"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}