{"id":4547,"date":"2025-01-15T17:48:39","date_gmt":"2025-01-15T08:48:39","guid":{"rendered":"https:\/\/www.wsmeguro.jp\/wp\/?p=4547"},"modified":"2025-01-15T21:32:00","modified_gmt":"2025-01-15T12:32:00","slug":"dart%e3%81%ae%e5%8b%89%e5%bc%b711%ef%bc%9a%e3%83%95%e3%82%a1%e3%82%a4%e3%83%ab%e3%81%a8%e3%83%95%e3%82%a9%e3%83%ab%e3%83%80%e3%81%a8%e9%9d%9e%e5%90%8c%e6%9c%9f%e3%81%a8%e5%90%8c%e6%9c%9f","status":"publish","type":"post","link":"https:\/\/www.wsmeguro.jp\/wp\/?p=4547","title":{"rendered":"Dart\u306e\u52c9\u5f3711\u22121\uff1a\u30d5\u30a1\u30a4\u30eb\u3068\u30d5\u30a9\u30eb\u30c0\u3068\u540c\u671f\u30fb\u975e\u540c\u671f"},"content":{"rendered":"<p>\u30d5\u30a9\u30eb\u30c0\u9593\u3092\u30b7\u30f3\u30af\u30ed\u3055\u305b\u308b\u30d7\u30ed\u30b0\u30e9\u30e0\u306e\u4f5c\u6210\u306b\u5fc5\u8981\u306a\u6a5f\u80fd\u3092\u52c9\u5f37\u3057\u3066\u3044\u304d\u307e\u3059\u3002<br \/>\n\u975e\u540c\u671f\u3068\u306a\u308b\u51e6\u7406\u306f\u3001<code>async<\/code>\u3092\u5165\u308c\u3066\u3001\u51e6\u7406\u4e2d\u306b\u975e\u540c\u671f\u51e6\u7406\u3092\u547c\u3073\u51fa\u3059\u3068\u7d42\u4e86\u3092\u5f85\u305f\u305a\u306b\u5148\u306b\u9032\u3093\u3067\u3057\u307e\u3046\u3002<\/p>\n<ol>\n<li>\u540c\u671f\u30fb\u975e\u540c\u671f<br \/>\n\u51e6\u7406\u306e\u5b8c\u4e86\u3092\u5f85\u305f\u306a\u304f\u3066\u3082\u5148\u306b\u9032\u3093\u3067\u304b\u307e\u308f\u306a\u3044\u51e6\u7406\u3092\u542b\u3080\u5834\u5408\u306f\u3001{}\u306e\u524d\u306basync\u3092\u5165\u308c\u307e\u3059\u3002\u305f\u3060\u3057\u3001\u51e6\u7406\u3057\u3066\u3044\u308b\u9014\u4e2d\u3067\u7d42\u308f\u308b\u306e\u3092\u5f85\u3063\u3066\u307b\u3057\u3044\u51e6\u7406\u306fawait\u3092\u5165\u308c\u307e\u3059\u3002\u307f\u305f\u65b9\u304c\u65e9\u3044\u306d\u3002<\/p>\n<div class=\"hcb_wrap\">\n<pre class=\"prism line-numbers lang-dart\" data-lang=\"Dart\">\r\nvoid main() async {\r\n  print('\u51e6\u7406\uff11\uff1a\u958b\u59cb');\r\n  \/\/ \u975e\u540c\u671f\u51e6\u7406\r\n  Future.delayed(Duration(seconds: 2), () {\r\n    print('\u51e6\u7406\uff12\uff1a\u975e\u540c\u671f\u51e6\u7406\uff11\u306e\u7d42\u4e86');\r\n  });\r\n  \/\/\u3053\u308c\u3082\u975e\u540c\u671f\u3060\u3051\u3069\u4e0a\u3088\u308a\u3082\u65e9\u304f\u7d42\u308f\u308b\u3057\u3001\u6b21\u306b\u5165\u308b\u306e\u306f\u3053\u306e\u51e6\u7406\u304c\u7d42\u308f\u3063\u3066\u304b\u3089\r\n  await process2();\r\n  print('\u51e6\u7406\uff13\uff1a\u5b8c\u4e86');\r\n}\r\n\r\nFuture&lt;void&gt; process2() async {\r\n  await Future.delayed(Duration(seconds: 1), () {\r\n    print('\u51e6\u7406\uff14\uff1a\u975e\u540c\u671f\u51e6\u7406\uff12\u306e\u7d42\u4e86');\r\n  });\r\n}\r\n\r\n=\u51e6\u7406\u7d50\u679c=\r\n\u51e6\u7406\uff11\uff1a\u958b\u59cb\r\n\u51e6\u7406\uff14\uff1a\u975e\u540c\u671f\u51e6\u7406\uff12\u306e\u7d42\u4e86\r\n\u51e6\u7406\uff13\uff1a\u5b8c\u4e86\r\n\u51e6\u7406\uff12\uff1a\u975e\u540c\u671f\u51e6\u7406\uff11\u306e\u7d42\u4e86\r\n<\/pre>\n<\/div>\n<p>\u3068\u3044\u3046\u3053\u3068\u3067\u3001\u51e6\u7406\uff12\u306e\u7d42\u4e86\u3092\u5f85\u305f\u305a\u306b\u5148\u306b\u9032\u3093\u3067\u3057\u307e\u3046\u304c\u3001\u51e6\u7406\uff14\u306f\u5f85\u3063\u3066\u3082\u3089\u3048\u308b\u306e\u3067\u3001\u305d\u306e\u7d50\u679c\u3092\u8e0f\u307e\u3048\u3066\u51e6\u7406\uff13\u304c\u5b9f\u884c\u3055\u308c\u308b\u3002\u51e6\u7406\uff12\u306f\u3053\u306e\u30d7\u30ed\u30bb\u30b9\u3067\u306f\u3001\u51e6\u7406\u7d50\u679c\u304c\u4f7f\u308f\u308c\u308b\u3053\u3068\u3092\u524d\u63d0\u3068\u3057\u3066\u3044\u306a\u3044\u3002\n<\/li>\n<li>json\u30d5\u30a1\u30a4\u30eb\u306e\u8aad\u307f\u8fbc\u307f\u3084\u30d5\u30a1\u30a4\u30eb\u3068\u30d5\u30a9\u30eb\u30c0\u306e\u5b58\u5728\u30c1\u30a7\u30c3\u30af\n<div class=\"hcb_wrap\">\n<pre class=\"prism line-numbers lang-dart\" data-lang=\"Dart\">\r\nimport 'dart:convert';\r\nimport 'dart:io';\r\nvoid main(List<String> arguments) async { \/\/\u975e\u540c\u671f\u3067\u3059\u3002\r\n  final configFile = File('folder_sync.json'); \/\/json\u30d5\u30a1\u30a4\u30eb\u3092\u4ee3\u5165\r\n  if (!await configFile.exists()) { \/\/\u5b58\u5728\u30c1\u30a7\u30c3\u30af\uff1aawait\u306e\u524d\u306b!\u304c\u5165\u3063\u3066\u3061\u3087\u3063\u3068\u3073\u3063\u304f\u308a\r\n    print('Config file not found: ${configFile.path}');\r\n    return;\r\n  }\r\n\r\n  final configContent = await configFile.readAsString(); \/\/json\u30d5\u30a1\u30a4\u30eb\u306e\u8aad\u307f\u8fbc\u307f\r\n  final config = jsonDecode(configContent); \/\/\u8aad\u307f\u8fbc\u3093\u3060\u30d5\u30a1\u30a4\u30eb\u3092Map\u578b\u306b\u5909\u63db\r\n  final folder1 = Directory(config['folder1']); \/\/\u30d5\u30a9\u30eb\u30c0\uff11\u3092\u4ee3\u5165\r\n  final folder2 = Directory(config['folder2']); \/\/\u30d5\u30a9\u30eb\u30c0\uff12\u3092\u4ee3\u5165\r\n  print(folder1.existsSync()); \/\/\u5b58\u5728\u3059\u308b\u304b\u3057\u306a\u3044\u304b\u3092\u8fd4\u3059\r\n  print(folder2.existsSync());\r\n}\r\n\r\nfolder_sync.json\r\n{\r\n\t\"folder1\":\"\/Volumes\/SSD\/folder1\/\",\r\n\t\"folder2\":\"\/Volumes\/SSD\/folder2\/\"\r\n}\r\n<\/pre>\n<\/div>\n<\/li>\n<li>\u5bfe\u8c61\u3068\u306a\u308b\u30d5\u30a9\u30eb\u30c0\u306b\u5909\u66f4\u304c\u8d77\u3053\u3063\u305f\u304b\u3069\u3046\u304b\u3092\u76e3\u8996\u3059\u308b\u6a5f\u80fd\u3092\u8ffd\u52a0\u3057\u305f\u3082\u306e\n<div class=\"hcb_wrap\">\n<pre class=\"prism line-numbers lang-dart\" data-lang=\"Dart\">\r\nimport 'dart:convert';\r\nimport 'dart:io';\r\n\r\nbool isRunning = true; \/\/ \u505c\u6b62\u30d5\u30e9\u30b0\r\nvoid main(List<String> arguments) async {\r\n  \/\/\u975e\u540c\u671f\u3067\u3059\u3002\r\n\r\n  handleExit(); \/\/\u7d42\u4e86\u51e6\u7406\u3092\u547c\u3073\u51fa\u3057\r\n\r\n  final configFile = File(\r\n      '\/Volumes\/M4SSD\/AppData\/sync_folders\/folder_sync.json'); \/\/json\u30d5\u30a1\u30a4\u30eb\u3092\u4ee3\u5165\r\n  if (!await configFile.exists()) {\r\n    \/\/\u5b58\u5728\u30c1\u30a7\u30c3\u30af\uff1aawait\u306e\u524d\u306b!\u304c\u5165\u3063\u3066\u3061\u3087\u3063\u3068\u3073\u3063\u304f\u308a\r\n    print('Config file not found: ${configFile.path}');\r\n    return;\r\n  }\r\n\r\n  final configContent = await configFile.readAsString(); \/\/json\u30d5\u30a1\u30a4\u30eb\u306e\u8aad\u307f\u8fbc\u307f\r\n  final config = jsonDecode(configContent); \/\/\u8aad\u307f\u8fbc\u3093\u3060\u30d5\u30a1\u30a4\u30eb\u3092Map\u578b\u306b\u5909\u63db\r\n  final folder1 = Directory(config['folder1']); \/\/\u30d5\u30a9\u30eb\u30c0\uff11\u3092\u4ee3\u5165\r\n  final folder2 = Directory(config['folder2']); \/\/\u30d5\u30a9\u30eb\u30c0\uff12\u3092\u4ee3\u5165\r\n  print(folder1.existsSync()); \/\/\u5b58\u5728\u3059\u308b\u304b\u3057\u306a\u3044\u304b\u3092\u8fd4\u3059\r\n  print(folder2.existsSync());\r\n\r\n  await watchFolder(folder1);\r\n}\r\n\r\n\/\/ \u30d5\u30a9\u30eb\u30c0\u76e3\u8996\r\nFuture&lt;void&gt; watchFolder(Directory source) async {\r\n  if (!isRunning) return; \/\/ \u505c\u6b62\u30c1\u30a7\u30c3\u30af\r\n  await for (final event in source.watch()) {\r\n    if (event is FileSystemEvent) {\r\n      print('Change detected in ${source.path}: ${event.path}');\r\n    }\r\n  }\r\n}\r\n\r\n\/\/ \u7d42\u4e86\u51e6\u7406\r\nFuture&lt;void&gt; handleExit() async {\r\n  stdin.listen((input) {\r\n    final command = String.fromCharCodes(input).trim();\r\n    if (command.toLowerCase() == 'exit') {\r\n      print('Stopping program...');\r\n      isRunning = false;\r\n    }\r\n  });\r\n}\r\n<\/pre>\n<\/div>\n<p>Change detected in \/Volumes\/SSD\/folder1\/: \/Volumes\/SSD\/folder1\/x.txt<br \/>\n\u307f\u305f\u3044\u306b\u3001\u4f55\u304c\u8d77\u3053\u3063\u305f\u306e\u304b\u8868\u793a\u3055\u308c\u307e\u3059\u3002<\/li>\n<\/ol>\n","protected":false},"excerpt":{"rendered":"<p>\u30d5\u30a9\u30eb\u30c0\u9593\u3092\u30b7\u30f3\u30af\u30ed\u3055\u305b\u308b\u30d7\u30ed\u30b0\u30e9\u30e0\u306e\u4f5c\u6210\u306b\u5fc5\u8981\u306a\u6a5f\u80fd\u3092\u52c9\u5f37\u3057\u3066\u3044\u304d\u307e\u3059\u3002 \u975e\u540c\u671f\u3068\u306a\u308b\u51e6\u7406\u306f\u3001async\u3092\u5165\u308c\u3066\u3001\u51e6\u7406\u4e2d\u306b\u975e\u540c\u671f\u51e6\u7406\u3092\u547c\u3073\u51fa\u3059\u3068\u7d42\u4e86\u3092\u5f85\u305f\u305a\u306b\u5148\u306b\u9032\u3093\u3067\u3057\u307e\u3046\u3002 \u540c\u671f\u30fb\u975e\u540c\u671f \u51e6\u7406\u306e\u5b8c\u4e86\u3092\u5f85\u305f\u306a\u304f\u3066\u3082\u5148&#8230;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_kad_post_transparent":"","_kad_post_title":"","_kad_post_layout":"","_kad_post_sidebar_id":"","_kad_post_content_style":"","_kad_post_vertical_padding":"","_kad_post_feature":"","_kad_post_feature_position":"","_kad_post_header":false,"_kad_post_footer":false,"footnotes":""},"categories":[595,505],"tags":[601,619],"class_list":["post-4547","post","type-post","status-publish","format-standard","hentry","category-dart2","category-programming","tag-dart"],"_links":{"self":[{"href":"https:\/\/www.wsmeguro.jp\/wp\/index.php?rest_route=\/wp\/v2\/posts\/4547","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.wsmeguro.jp\/wp\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.wsmeguro.jp\/wp\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.wsmeguro.jp\/wp\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.wsmeguro.jp\/wp\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=4547"}],"version-history":[{"count":7,"href":"https:\/\/www.wsmeguro.jp\/wp\/index.php?rest_route=\/wp\/v2\/posts\/4547\/revisions"}],"predecessor-version":[{"id":4556,"href":"https:\/\/www.wsmeguro.jp\/wp\/index.php?rest_route=\/wp\/v2\/posts\/4547\/revisions\/4556"}],"wp:attachment":[{"href":"https:\/\/www.wsmeguro.jp\/wp\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=4547"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.wsmeguro.jp\/wp\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=4547"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.wsmeguro.jp\/wp\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=4547"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}