{"id":45652,"date":"2023-01-31T16:37:41","date_gmt":"2023-06-19T14:24:52","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/45652-2\/"},"modified":"2024-04-29T12:24:37","modified_gmt":"2024-04-29T04:24:37","slug":"45652-2","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/45652-2\/","title":{"rendered":""},"content":{"rendered":"<p>\u203b\u3053\u306e\u8a18\u4e8b\u306f\u6587\u7cfb\u7684\u5197\u9577\u6027\u53ca\u3073\u53cd\u77e5\u6027\u7684\u66d6\u6627\u4e3b\u7fa9\u306b\u652f\u914d\u3055\u308c\u3066\u3044\u307e\u30591\u3002<\/p>\n<h1>\u73fe\u4ee3\u697d\u8b5c\u5b66\u6982\u8ad6\u3042\u308b\u3044\u306f\u9306\u3073\u3064\u3044\u305f\u982d\u306b\u30aa\u30a4\u30eb\u3092<\/h1>\n<p>Null\u5b89\u51682\u304c\u4e00\u90e8\u754c\u9688\u3092\u8cd1\u308f\u305b\u305f2016\u5e7411\u6708\u3002\u8cb4\u91cd\u306a\u4f11\u65e5\u3092\u6e6f\u6c34\u306e\u3088\u3046\u306b\u8cbb\u3084\u3057\u3066\u4e0d\u6bdb\u306a\u4f5c\u696d\u306b\u660e\u3051\u66ae\u308c\u308b\u6587\u7cfb\u65e5\u66dc\u30d7\u30ed\u30b0\u30e9\u30de\u30fc\u3067\u3042\u308b\u79c1\u306f\u3001\u6848\u306e\u5b9a\u3001\u5929\u5553\u3092\u5f97\u307e\u3057\u305f\u3002\u8607\u308b\u8a18\u61b6\u300230\u5104\u306e\u30c7\u30d0\u30a4\u30b9\u3002\u30cc\u30eb\u30dd\u3002\u30ac\u30c3\u3002\u3082\u3046\u3044\u3084\u3060\u3001\u30e2\u30c0\u30f3\u306a\u30e9\u30f3\u30b0\u30a8\u30c3\u30c2\u3092\u30e9\u30a4\u30c8\u3057\u305f\u3044\u2026\u2026\uff013<\/p>\n<p>\u3068\u306f\u3044\u3048\u3001\u9650\u3089\u308c\u305f\u6642\u9593\u3067\u66f8\u304f\u4ee5\u4e0a\u3001\u76ee\u7684\u3092\u3082\u3063\u3066\u53d6\u308a\u7d44\u307f\u305f\u3044\u3068\u3044\u3046\u3082\u306e\u3002\u4e00\u901a\u308a\u601d\u3044\u3092\u5de1\u3089\u305b\u3066\u6d6e\u304b\u3093\u3060\u306e\u304c\u3001C++\u3092\u899a\u3048\u308b\u305f\u3081\u306bSMF\u30d1\u30fc\u30b5\u30fc\u3092\u66f8\u3044\u305f\u7d4c\u9a13\u3002\u30d3\u30c3\u30c8\u6f14\u7b97\u304b\u3089\u30d5\u30a1\u30a4\u30eb\u5165\u51fa\u529b\u307e\u3067\u4e00\u901a\u308a\u5fc5\u8981\u3068\u306a\u308b\u4e0a\u306b\u3001\u898f\u6a21\u611f\u304c\u624b\u9803\u3067\u3001\u65b0\u305f\u306a\u8a00\u8a9e\u3092\u899a\u3048\u308b\u306e\u306b\u305d\u3053\u305d\u3053\u5411\u3044\u3066\u3044\u307e\u3059\u3002\u4f55\u3088\u308a\u3061\u3087\u3046\u3069\u3001\u3088\u308a\u9ad8\u6a5f\u80fd\u306a\u3082\u306e\u306b\u66f8\u304d\u76f4\u3057\u305f\u3044\u3068\u601d\u3063\u3066\u3044\u307e\u3057\u305f\u3002\u3068\u3044\u3046\u308f\u3051\u3067\u3001C++\u306e\u4ee3\u66ff\u8a00\u8a9e\uff08\u3068\u76ee\u3055\u308c\u308b\uff09Rust\u3067SMF\u30d1\u30fc\u30b5\u30fc\u30e9\u30a4\u30d6\u30e9\u30eaghakuf\u3092\u66f8\u304d\u307e\u3057\u305f\u3002\u3053\u306e\u8a18\u4e8b\u306f\u3001\u30b3\u30fc\u30c9\u306e\u89e3\u8aac\u3068\u516c\u958b\u307e\u3067\u306e\u9053\u306e\u308a\u3092\u8a18\u3059\u3082\u306e\u3067\u3059\u3002<\/p>\n<h2>\u7acb\u3066\u3070PC\u3001\u5ea7\u308c\u3070DAW\u3001\u6b69\u304f\u59ff\u306fSMF<\/h2>\n<p>\u3068\u3053\u308d\u3067SMF\uff08Standard MIDI File\uff09\u3092\u3054\u5b58\u77e5\u3067\u3059\u304b\uff1fMIDI4\u306e\u30d5\u30a1\u30a4\u30eb\u30d5\u30a9\u30fc\u30de\u30c3\u30c8\u306e\u4e00\u3064\u3067\u3001\u8981\u3059\u308b\u306b\u30c7\u30b8\u30bf\u30eb\u97f3\u6e90\u306b\u5bfe\u5fdc\u3057\u305f\u97f3\u7b26\u3068\u6f14\u594f\u8a18\u53f7\u306e\u96c6\u5408\u4f53\uff08\u697d\u8b5c\u30c7\u30fc\u30bf\uff09\u3067\u3059\u3002\u300c.mid\u300d\u3068\u306a\u3063\u3066\u3044\u308b\u30d5\u30a1\u30a4\u30eb\u306f\u5341\u4e2d\u516b\u4e5d\u3053\u308c\u300290\u5e74\u53f0\u5f8c\u534a\u306b\u8457\u4f5c\u6a29\u3092\u7121\u8996\u3057\u305fSMF\u3092\u3084\u308a\u3068\u308a\u3059\u308b\u4eba\u304c\u591a\u767a\u3057\u3066\u3057\u307e\u3063\u305f\u305f\u3081\u3001\u61d0\u304b\u3057\u3055\u3092\u899a\u3048\u308b\u3082\u3068\u3044\u30a2\u30f3\u30c0\u30fc\u30b0\u30e9\u30a6\u30f3\u30c9\u306a\u5370\u8c61\u3092\u53d7\u3051\u308b\u4eba\u304c\u3044\u308b\u304b\u3082\u3057\u308c\u307e\u305b\u3093\u3002\u30bb\u30b9\u30a8\u30e0\u30a8\u30d5\u30b3\u30ef\u30af\u30ca\u30a4\u3002\u30d6\u30f3\u30b1\u30a4\u30a6\u30bd\u30c4\u30ab\u30ca\u30a4\u3002<\/p>\n<p>SMF\u306e\u30d5\u30a1\u30a4\u30eb\u69cb\u9020\u306f\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u30a4\u30e1\u30fc\u30b8\u3002\u30d0\u30a4\u30ca\u30ea\u30c7\u30fc\u30bf\uff08\u2260\u30d7\u30ec\u30fc\u30f3\u30c6\u30ad\u30b9\u30c8\uff09\u3067\u3042\u308b\u3053\u3068\u306b\u6ce8\u610f\u3002<\/p>\n<pre class=\"post-pre\"><code>SMF\r\n\u251cMThd          \uff1a4byte    \u30d8\u30c3\u30c0\u30fc\r\n\u2502\u251cLength       \uff1a4byte    \u30d8\u30c3\u30c0\u30fc\u306e\u30b5\u30a4\u30ba\u3002\u30d8\u30c3\u30c0\u30fc\u306f\u5f62\u5f0f\u304c\u6c7a\u307e\u3063\u3066\u3044\u308b\u306e\u3067\u5fc5\u305a\uff16\uff08byte\uff09\u3002\r\n\u2502\u251cSMF Type     \uff1a2byte    SMF\u306e\u30bf\u30a4\u30d7\u3002\u666e\u901a\u306f\uff11\u3002\r\n\u2502\u251cNumber Tracks\uff1a2byte    \u30c8\u30e9\u30c3\u30af\u306e\u6570\r\n\u2502\u2514Time Division\uff1a2byte    \u6642\u9593\u5358\u4f4d\u3002\u6f14\u594f\u30bf\u30a4\u30df\u30f3\u30b0\u306e\u8a08\u7b97\u306b\u4f7f\u7528\u3002\u901a\u5e38\u306f\u6b63\u6570\u3067\u3001\uff14\u5206\u97f3\u7b26\u3042\u305f\u308a\u306e\u5206\u89e3\u80fd\u304c\u5165\u308b\u3002\r\n\u251cMTrk          \uff1a4byte    \u6307\u63ee\u8005\u30c8\u30e9\u30c3\u30af\uff08Conductor Track\uff09\r\n\u2502\u251cLength       \uff1aVLQ      \u30c8\u30e9\u30c3\u30af\u306e\u30b5\u30a4\u30ba\r\n\u2502\u251cMeta Event              \u30e1\u30bf\u60c5\u5831\r\n\u2502\u251cMeta Event              \u30e1\u30bf\u60c5\u5831\r\n\u2502\u251c ...\r\n\u2502\u2514Meta Event   \uff1a3byte    \u30c8\u30e9\u30c3\u30af\u306e\u7d42\u7aef\u3092\u793a\u3059\u30e1\u30bf\u60c5\u5831\uff08End of Track\uff09\r\n\u251cMTrk          \uff1a4byte    \u30c8\u30e9\u30c3\u30af\uff11\r\n\u2502\u251cLength       \uff1aVLQ      \u30c8\u30e9\u30c3\u30af\u306e\u30b5\u30a4\u30ba\r\n\u2502\u251cMIDI Event              \u6f14\u594f\u30c7\u30fc\u30bf\r\n\u2502\u251cMIDI Event              \u6f14\u594f\u30c7\u30fc\u30bf\r\n\u2502\u251cMIDI Event              \u6f14\u594f\u30c7\u30fc\u30bf\r\n\u2502\u251cMIDI Event              \u6f14\u594f\u30c7\u30fc\u30bf\r\n\u2502\u251c ...\r\n\u2502\u2514Meta Event   \uff1a3byte    \u30c8\u30e9\u30c3\u30af\u306e\u7d42\u7aef\u3092\u793a\u3059\u30e1\u30bf\u60c5\u5831\uff08End of Track\uff09\r\n\u251cMTrk          \uff1a4byte    \u30c8\u30e9\u30c3\u30af\uff12\r\n\u251c ...\r\n<\/code><\/pre>\n<p>\u57fa\u672c\u7684\u306b\u306f\u3001\u5148\u982d\u306b\u30d8\u30c3\u30c0\u30fc\u304c\u3042\u3063\u3066\u3001\u305d\u306e\u5f8c\u306b\u30c8\u30e9\u30c3\u30af\u3068\u547c\u3070\u308c\u308b\u30c7\u30fc\u30bf\u306e\u584a\u304c\u7d9a\u304d\u307e\u3059\u3002\u30c8\u30e9\u30c3\u30af\u306b\u306f\u4ee5\u4e0b\u306e\uff13\u7a2e\u985e\u306e\u30c7\u30fc\u30bf\u306e\u3044\u305a\u308c\u304b\u304c\u683c\u7d0d\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n<div>\n<div class=\"post-table\">\u30a4\u30d9\u30f3\u30c8\u6982\u8981\u4ee3\u8868\u4f8bMIDI\u30a4\u30d9\u30f3\u30c8\u3044\u308f\u3086\u308b\u6f14\u594f\u60c5\u5831\u3002\u3053\u3053\u3067\u767a\u58f0\u30b9\u30bf\u30fc\u30c8\uff01\u3068\u304b\u3001\u3053\u3053\u3067\u6f14\u594f\u65b9\u6cd5\u3092\u5909\u66f4\uff01\u3068\u304b\u3002\u30ce\u30fc\u30c8\u30fb\u30aa\u30f3\u3001\u30dd\u30ea\u30d5\u30a9\u30cb\u30c3\u30af\u30ad\u30fc\u30d7\u30ec\u30c3\u30b7\u30e3\u30fc\u3001\u30c1\u30e3\u30f3\u30cd\u30eb\u30fb\u30c1\u30a7\u30f3\u30b8\u30e1\u30bf\u30fb\u30a4\u30d9\u30f3\u30c8\u6f14\u594f\u60c5\u5831\u4ee5\u5916\u306e\u30e1\u30bf\u60c5\u5831\u3002\u5168\u4f53\u306e\u6f14\u594f\u30b9\u30d4\u30fc\u30c9\u3084\u697d\u8b5c\u5168\u4f53\u306b\u9069\u7528\u3055\u308c\u308b\u60c5\u5831\u3068\u304b\u3002\u30c6\u30f3\u30dd\u3001\u8457\u4f5c\u6a29\u60c5\u5831\u3001\u30c8\u30e9\u30c3\u30af\u7d42\u7aef\u30b7\u30b9\u30c6\u30e0\u30fb\u30a8\u30af\u30b9\u30af\u30eb\u30fc\u30b7\u30d6\u30fb\u30a4\u30d9\u30f3\u30c8\u97f3\u6e90\u7b49\u306b\u9001\u4fe1\u3055\u308c\u308b\u7279\u6b8a\u306a\u60c5\u5831\u3002MIDI\u3092\u901a\u3057\u3066\u6a5f\u5668\u9593\u306e\u901a\u4fe1\u3092\u884c\u3046\u969b\u306b\u7528\u3044\u3089\u308c\u308b\u3002\uff08SMF\u3067\u4f7f\u308f\u308c\u3066\u3044\u308b\u3068\u3053\u308d\u3092\u898b\u305f\u3053\u3068\u306a\u3044\u2026\u2026\uff09<\/div>\n<\/div>\n<p>\u3053\u306e\u307b\u304b\u3001\u53ef\u5909\u9577\u6570\u5024\u8868\u73fe\uff08VLQ\uff09\u3084\u30e9\u30f3\u30cb\u30f3\u30b0\u30b9\u30c6\u30fc\u30bf\u30b9\u304c\u6291\u3048\u3066\u304a\u304f\u3079\u304d\u30dd\u30a4\u30f3\u30c8\u306b\u306a\u308a\u307e\u3059\u304c\u3001\u4ee5\u4e0b\u306e\u3068\u304a\u308a\u826f\u8cea\u306a\u65e5\u672c\u8a9e\u306e\u89e3\u8aac\u3082\u591a\u3044\u305f\u3081\u3001\u8a73\u7d30\u306a\u4ed5\u69d8\u89e3\u8aac\u306f\u305d\u3061\u3089\u3067\u3054\u78ba\u8a8d\u3092\u3002<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">\u308f\u3044\u3084\u304e\u6c0f\u300cSMF (Standard MIDI Files) \u306e\u69cb\u9020\u300d\uff08\u500b\u4eba\u30b5\u30a4\u30c8\u30012010\u5e7410\u6708\uff09<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">g200kg\u6c0f\u300cDTM\u6280\u8853\u60c5\u5831\u300d\uff08\u500b\u4eba\u30b5\u30a4\u30c8\u30012011\u5e74\uff19\u6708\uff09<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">EternalWindows\u6c0f\u300c\u30b5\u30a6\u30f3\u30c9 \/ MIDI\u300d\uff08\u500b\u4eba\u30b5\u30a4\u30c8\u30012006\u5e74\uff09<\/ul>\n<h2>\u30cf\u30c3\u30ab\u30fc\u3082\u3059\u306a\u308bRust\u3068\u3044\u3075\u3082\u306e<\/h2>\n<p>\u6d41\u884c\u308a\u305d\u3046\u3067\u6d41\u884c\u3089\u306a\u3044\u5c11\u3057\u6d41\u884c\u3063\u3066\u3044\u308b\u30a4\u30de\u30c9\u30ad\u8a00\u8a9e\u3002\u305d\u306e\u30b3\u30f3\u30bb\u30d7\u30c8\u306f\u3001\u516c\u5f0f\u30ac\u30a4\u30c9\u30d6\u30c3\u30af\u306e\u982d\u66f8\u304d\u306b\u96c6\u7d04\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n<blockquote><p>\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u8a00\u8a9eRust<br \/>\nRust\u306f\u5b89\u5168\u6027\u3001\u901f\u5ea6\u3001\u4e26\u884c\u6027\u306e3\u3064\u306e\u30b4\u30fc\u30eb\u306b\u30d5\u30a9\u30fc\u30ab\u30b9\u3057\u305f\u30b7\u30b9\u30c6\u30e0\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u8a00\u8a9e\u3067\u3059\u3002 \u30ac\u30fc\u30d9\u30b8\u30b3\u30ec\u30af\u30bf\u306a\u3057\u306b\u3053\u308c\u3089\u306e\u30b4\u30fc\u30eb\u3092\u5b9f\u73fe\u3057\u3066\u3044\u3066\u3001\u4ed6\u306e\u8a00\u8a9e\u3078\u306e\u57cb\u3081\u8fbc\u307f\u3001\u8981\u6c42\u3055\u308c\u305f\u7a7a\u9593\u3084\u6642\u9593\u5185\u3067\u306e\u52d5\u4f5c\u3001 \u30c7\u30d0\u30a4\u30b9\u30c9\u30e9\u30a4\u30d0\u3084\u30aa\u30da\u30ec\u30fc\u30c6\u30a3\u30f3\u30b0\u30b7\u30b9\u30c6\u30e0\u306e\u3088\u3046\u306a\u4f4e\u30ec\u30d9\u30eb\u306a\u30b3\u30fc\u30c9\u306a\u3069\u4ed6\u306e\u8a00\u8a9e\u304c\u82e6\u624b\u3068\u3059\u308b\u591a\u6570\u306e\u30e6\u30fc\u30b9\u30b1\u30fc\u30b9\u3092\u5f97\u610f\u3068\u3057\u307e\u3059\u3002 \u5168\u3066\u306e\u30c7\u30fc\u30bf\u7af6\u5408\u3092\u6392\u9664\u3057\u3064\u3064\u3082\u5b9f\u884c\u6642\u30aa\u30fc\u30d0\u30fc\u30d8\u30c3\u30c9\u306e\u306a\u3044\u30b3\u30f3\u30d1\u30a4\u30eb\u6642\u306e\u5b89\u5168\u6027\u691c\u67fb\u3092\u591a\u6570\u6301\u3061\u3001\u3053\u308c\u3089\u306e\u9818\u57df\u3092\u30bf\u30fc\u30b2\u30c3\u30c8\u306b\u7f6e\u304f\u65e2\u5b58\u306e\u8a00\u8a9e\u3092\u6539\u5584\u3057\u307e\u3059\u3002 Rust\u306f\u9ad8\u7d1a\u8a00\u8a9e\u306e\u3088\u3046\u306a\u62bd\u8c61\u5316\u3082\u542b\u3081\u305f\u300c\u30bc\u30ed\u30b3\u30b9\u30c8\u62bd\u8c61\u5316\u300d\u3082\u76ee\u6a19\u3068\u3057\u3066\u3044\u307e\u3059\u3002 \u305d\u3046\u3067\u3042\u308a\u3064\u3064\u3082\u306a\u304a\u4f4e\u7d1a\u8a00\u8a9e\u306e\u3088\u3046\u306a\u7cbe\u5bc6\u306a\u5236\u5fa1\u3082\u8a31\u3057\u307e\u3059\u3002<\/p><\/blockquote>\n<p>\u3053\u306e\u516c\u5f0f\u30ac\u30a4\u30c9\u30d6\u30c3\u30af\u304c\u975e\u5e38\u306b\u826f\u304f\u3067\u304d\u3066\u3044\u3066\u3001\u304b\u3064\u6700\u65b0\u306e\u4ed5\u69d8\u304c\u307e\u3068\u3081\u3089\u308c\u3066\u3044\u308b5\u306e\u3067\u3001\u3053\u308c\u3060\u3051\u3067\u521d\u5fc3\u8005\u304c\u5341\u5206\u306b\u52c9\u5f37\u3067\u304d\u307e\u3059\u3002\u305d\u306e\u4ed6\u3067\u306f\u3001Rust\u306e\u611f\u89e6\u3092\u3064\u304b\u3080\u307e\u3067\u4ee5\u4e0b\u306e\u30b5\u30a4\u30c8\u304c\u5927\u5909\u5f79\u306b\u7acb\u3061\u307e\u3057\u305f\u3002<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">\u3044\u3082\u3059\u6c0f\u300cRust\u306f\u4f55\u304c\u65b0\u3057\u3044\u306e\u304b\uff08\u57fa\u672c\u7684\u306a\u8a00\u8a9e\u6a5f\u80fd\u306e\u7d39\u4ecb\uff09\u300d\uff08\u500b\u4eba\u30b5\u30a4\u30c8\u30012017\u5e74\uff11\u6708\uff09<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">Raphael \u2018kena\u2019 Poss\u6c0f\u300c\u95a2\u6570\u578b\u30d7\u30ed\u30b0\u30e9\u30de\u306e\u305f\u3081\u306eRust\u300d\uff08\u500b\u4eba\u30b5\u30a4\u30c8\u30012014\u5e74\uff17\u6708\u3001POSTD\u8a33\uff09<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">Benjamin Fry\u6c0f\u300cRust\u3068DNS\u306e1\u5e74\u300d\uff08\u500b\u4eba\u30d6\u30ed\u30b0\u30012016\u5e74\uff18\u6708\u3001POSTD\u8a33\uff09<\/ul>\n<p>\u3061\u306a\u307f\u306b\u3001\u534a\u5e74\u307b\u3069Rust\u3092\u89e6\u3063\u3066\u6700\u3082\u5f97\u5fc3\u304c\u884c\u3063\u305f\u306e\u306f\u4ee5\u4e0b\u306e\u30c4\u30a4\u30fc\u30c8\u3002<\/p>\n<blockquote><p>rust \u306f\u30b7\u30b9\u30c6\u30e0\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u4e91\u3005\u3092\u629c\u304d\u306b\u3057\u3066\u3001\u30e1\u30e2\u30ea\u7ba1\u7406\u754c\u9688\u306e\u300c\u3082\u3046\u4eba\u985e\u306fGC\u7121\u3057\u3058\u3083\u7121\u7406\u306a\u3093\u3058\u3083?\u300dvs\u300c\u6839\u6027\u3068\u3044\u3046\u540d\u306e\u77e5\u6027\u3067\u3084\u308c\u3070\u3067\u304d\u308b\u300d\u3068\u3044\u3046\u5bfe\u7acb\u69cb\u9020\u306b\u5bfe\u3057\u3066\u300c\u30b3\u30f3\u30d1\u30a4\u30e9\u3067\u5ef6\u3005\u3068\u6bb4\u308c\u3070\u4eba\u306f\u6b63\u3057\u3044\u9053\u3092\u6b69\u3051\u308b\u300d\u3068\u3044\u3046\u7b2c\u4e09\u6975\u3092\u63d0\u793a\u3057\u305f\u306e\u304c\u826f\u304b\u3063\u305f\u6c17\u304c\u3059\u308b\u3002\u4f55\u3082\u77e5\u3089\u3093\u3051\u3069\u3002\u2014 \u306f\u3093\u307a\u3093\u30d7\u30ed\u30b0\u30e9\u30de\u30fc (@hanpen_good) 2017\u5e742\u67081\u65e5<\/p><\/blockquote>\n<p>Rust\u3067\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u3092\u3059\u308b\u306b\u3042\u305f\u3063\u3066\u3001\u30a8\u30c7\u30a3\u30bf\u30fc\u306fAtom\u3092\u63a1\u7528\u3057\u307e\u3057\u305f\u3002\u7406\u7531\u306f\u3068\u304f\u306b\u3042\u308a\u307e\u305b\u3093\u304c\u3001\u79c1\u306e\u958b\u767a\u74b0\u5883\u304cWindows\u3068Mac\u306a\u306e\u3067\u3001Emacs\u3084Vim\u3088\u308a\u4f7f\u3044\u3084\u3059\u3044\u304b\u306a\u30fc\u3068\u3044\u3046\u304f\u3089\u30446\u3002\u53c2\u8003\u307e\u3067\u306b\u3001\u4f7f\u7528\u3057\u3066\u3044\u308b\u30d1\u30c3\u30b1\u30fc\u30b8\u306f\u4ee5\u4e0b\u306e\u3068\u304a\u308a\u3002<\/p>\n<div>\n<div class=\"post-table\">\u30d1\u30c3\u30b1\u30fc\u30b8\u540d\u4f5c\u8005\u6982\u8981<a href=\"https:\/\/atom.io\/packages\/atom-beautify\" target=\"_blank\" rel=\"nofollow noopener\">Atom Beautify<\/a>Glavin001\u6c0f\u30b3\u30fc\u30c9\u6574\u5f62\u3092\u81ea\u52d5\u3067\u884c\u3063\u3066\u304f\u308c\u307e\u3059\u3002Rust\u306b\u3082\u5bfe\u5fdc\u3002<a href=\"https:\/\/atom.io\/packages\/build-cargo\" target=\"_blank\" rel=\"nofollow noopener\">Build Cargo<\/a>\uff08Atom\u516c\u5f0f\uff09Rust\u306e\u30d3\u30eb\u30c9\u30b7\u30b9\u30c6\u30e0\u300c<a href=\"http:\/\/doc.crates.io\/guide.html\" target=\"_blank\" rel=\"nofollow noopener\">Cargo<\/a>\u300d\u306e\u30b3\u30de\u30f3\u30c9\u3092Atom\u306b\u8ffd\u52a0\u3057\u3066\u304f\u308c\u307e\u3059\u3002\u300ccargo doc &#8211;no-deps\u300d\u3082\u8ffd\u52a0\u3057\u3066\u307b\u3057\u3044\u2026\u2026\u3002<a href=\"https:\/\/atom.io\/packages\/language-rust\" target=\"_blank\" rel=\"nofollow noopener\">Language Rust<\/a>zargony\u6c0fRust\u306e\u30b7\u30f3\u30bf\u30c3\u30af\u30b9\u30fb\u30cf\u30a4\u30e9\u30a4\u30c8\uff08\u95a2\u6570\u3084\u5909\u6570\u3068\u3044\u3063\u305f\u610f\u5473\u306b\u5fdc\u3058\u3066\u8272\u3092\u5909\u3048\u308b\u30a2\u30ec\uff09\u3067\u3059\u3002<a href=\"https:\/\/atom.io\/packages\/linter-rust\" target=\"_blank\" rel=\"nofollow noopener\">Linter Rust<\/a>\uff08Atom\u516c\u5f0f\uff09Rust\u306e\u69cb\u6587\u30c1\u30a7\u30c3\u30af\u3092\u3057\u3066\u304f\u308c\u307e\u3059\u3002\u305f\u307e\u306b\u3046\u308b\u3055\u3044\u3002<a href=\"https:\/\/atom.io\/packages\/racer\" target=\"_blank\" rel=\"nofollow noopener\">Racer<\/a>edubkendo\u6c0fRust\u306e\u30b3\u30fc\u30c9\u88dc\u5b8c\uff08\u30b3\u30fc\u30c9\u5165\u529b\u4e2d\u306b\u3001\u305d\u306e\u7d9a\u304d\u306e\u5019\u88dc\u3092\u51fa\u3057\u3066\u304f\u308c\u308b\u30a2\u30ec\uff09\u3092\u3057\u3066\u304f\u308c\u307e\u3059\u3002\u4e8b\u524d\u306bCargo\u304b\u3089<a href=\"https:\/\/github.com\/racer-rust\/racer\" target=\"_blank\" rel=\"nofollow noopener\">Racer<\/a>\u3092\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u3057\u3066\u304a\u304f\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/div>\n<\/div>\n<div><img decoding=\"async\" class=\"post-images\" title=\"\" src=\"https:\/\/cdn.silicloud.com\/blog-img\/blog\/img\/657d600e37434c4406cf9ba8\/21-0.png\" alt=\"atom.png\" \/><\/div>\n<h1>\u30de\u30af\u30ac\u30d5\u30a3\u30f3\u305f\u308bSMF\u3001\u3068\u304d\u3069\u304dRust\u306e\u30aa\u30ce\u30de\u30c8\u30da<\/h1>\n<p>\u524d\u7f6e\u304d\u304c\u9577\u304f\u306a\u308a\u307e\u3057\u305f\u304c\u3001SMF\u30d1\u30fc\u30b5\u30fc\u3092Rust\u306e\u30e9\u30a4\u30d6\u30e9\u30ea\u3068\u3057\u3066\u5b9f\u88c5\u3059\u308b\u307e\u3067\u306e\u9053\u306e\u308a\u306f\u4ee5\u4e0b\u306e\u3068\u304a\u308a\u3002\u5b8c\u6210\u5f62\u3060\u3051\u77e5\u308a\u305f\u3044\u65b9\u306f\u30ec\u30dd\u30b8\u30c8\u30ea\u307e\u305f\u306f\u30c9\u30ad\u30e5\u30e1\u30f3\u30c8\u3078\u3069\u3046\u305e\u3002<\/p>\n<h2>\u304a\u305f\u307e\u3058\u3083\u304f\u3057\u306f\u96fb\u5b50\u97f3\u7b26\u306e\u5922\u3092\u898b\u308b\u304b\uff1f<\/h2>\n<p>\u524d\u7bc0\u3067\u7c21\u5358\u306b\u7d39\u4ecb\u3057\u305f\u3068\u304a\u308a\u3001SMF\u306f\u57fa\u672c\u7684\u306b\u5404\u30c8\u30e9\u30c3\u30af\u306b\u8a18\u8ff0\u3055\u308c\u305fMIDI\u30a4\u30d9\u30f3\u30c8\u7b49\u304b\u3089\u306a\u308b\u305f\u3081\u3001\u3053\u308c\u3092Rust\u3067\u8868\u73fe\u3057\u307e\u3059\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"k\">pub<\/span> <span class=\"k\">enum<\/span> <span class=\"n\">Message<\/span> <span class=\"p\">{<\/span>\r\n    <span class=\"n\">MetaEvent<\/span> <span class=\"p\">{<\/span> <span class=\"n\">delta_time<\/span><span class=\"p\">:<\/span> <span class=\"nb\">u32<\/span><span class=\"p\">,<\/span> <span class=\"n\">event<\/span><span class=\"p\">:<\/span> <span class=\"n\">MetaEvent<\/span><span class=\"p\">,<\/span> <span class=\"n\">data<\/span><span class=\"p\">:<\/span> <span class=\"nb\">Vec<\/span><span class=\"o\">&lt;<\/span><span class=\"nb\">u8<\/span><span class=\"o\">&gt;<\/span> <span class=\"p\">},<\/span>\r\n    <span class=\"n\">MidiEvent<\/span> <span class=\"p\">{<\/span> <span class=\"n\">delta_time<\/span><span class=\"p\">:<\/span> <span class=\"nb\">u32<\/span><span class=\"p\">,<\/span> <span class=\"n\">event<\/span><span class=\"p\">:<\/span> <span class=\"n\">MidiEvent<\/span> <span class=\"p\">},<\/span>\r\n    <span class=\"n\">SysExEvent<\/span> <span class=\"p\">{<\/span> <span class=\"n\">delta_time<\/span><span class=\"p\">:<\/span> <span class=\"nb\">u32<\/span><span class=\"p\">,<\/span> <span class=\"n\">event<\/span><span class=\"p\">:<\/span> <span class=\"n\">SysExEvent<\/span><span class=\"p\">,<\/span> <span class=\"n\">data<\/span><span class=\"p\">:<\/span> <span class=\"nb\">Vec<\/span><span class=\"o\">&lt;<\/span><span class=\"nb\">u8<\/span><span class=\"o\">&gt;<\/span> <span class=\"p\">},<\/span>\r\n    <span class=\"n\">TrackChange<\/span><span class=\"p\">,<\/span>\r\n<span class=\"p\">}<\/span>\r\n<span class=\"k\">pub<\/span> <span class=\"k\">enum<\/span> <span class=\"n\">MetaEvent<\/span> <span class=\"p\">{<\/span>\r\n    <span class=\"n\">SequenceNumber<\/span><span class=\"p\">,<\/span>\r\n    <span class=\"n\">TextEvent<\/span><span class=\"p\">,<\/span>\r\n    <span class=\"c\">\/\/ \u4e2d\u7565<\/span>\r\n    <span class=\"n\">Unknown<\/span> <span class=\"p\">{<\/span> <span class=\"n\">event_type<\/span><span class=\"p\">:<\/span> <span class=\"nb\">u8<\/span> <span class=\"p\">},<\/span>\r\n<span class=\"p\">}<\/span>\r\n<span class=\"k\">pub<\/span> <span class=\"k\">enum<\/span> <span class=\"n\">MidiEvent<\/span> <span class=\"p\">{<\/span>\r\n    <span class=\"n\">NoteOff<\/span> <span class=\"p\">{<\/span> <span class=\"n\">ch<\/span><span class=\"p\">:<\/span> <span class=\"nb\">u8<\/span><span class=\"p\">,<\/span> <span class=\"n\">note<\/span><span class=\"p\">:<\/span> <span class=\"nb\">u8<\/span><span class=\"p\">,<\/span> <span class=\"n\">velocity<\/span><span class=\"p\">:<\/span> <span class=\"nb\">u8<\/span> <span class=\"p\">},<\/span>\r\n    <span class=\"n\">NoteOn<\/span> <span class=\"p\">{<\/span> <span class=\"n\">ch<\/span><span class=\"p\">:<\/span> <span class=\"nb\">u8<\/span><span class=\"p\">,<\/span> <span class=\"n\">note<\/span><span class=\"p\">:<\/span> <span class=\"nb\">u8<\/span><span class=\"p\">,<\/span> <span class=\"n\">velocity<\/span><span class=\"p\">:<\/span> <span class=\"nb\">u8<\/span> <span class=\"p\">},<\/span>\r\n    <span class=\"c\">\/\/ \u4e2d\u7565<\/span>\r\n    <span class=\"n\">Unknown<\/span> <span class=\"p\">{<\/span> <span class=\"n\">ch<\/span><span class=\"p\">:<\/span> <span class=\"nb\">u8<\/span> <span class=\"p\">},<\/span>\r\n<span class=\"p\">}<\/span>\r\n<span class=\"k\">pub<\/span> <span class=\"k\">enum<\/span> <span class=\"n\">SysExEvent<\/span> <span class=\"p\">{<\/span>\r\n    <span class=\"c\">\/\/ \u4e2d\u7565<\/span>\r\n<span class=\"p\">}<\/span>\r\n<\/code><\/pre>\n<p>\u5404\u30a4\u30d9\u30f3\u30c8\u306b\u306f\u30c7\u30eb\u30bf\u30bf\u30a4\u30e0\u3068\u547c\u3070\u308c\u308b\u6642\u9593\u60c5\u5831\u304c\u8a18\u9332\u3055\u308c\u3066\u304a\u308a\u3001\u307e\u305f\u3001\u53ef\u5909\u9577\u306e\u30c7\u30fc\u30bf\u304c\u542b\u307e\u308c\u308b\u3053\u3068\u304c\u3042\u308b\u305f\u3081\u3001\u307e\u305a\u306f\u4e0a\u4f4d\u306e\u5217\u6319\u578b7Message\u3067\u5404\u30a4\u30d9\u30f3\u30c8\u3092\u8a18\u8ff0\u3057\u3001\u305d\u308c\u305e\u308c\u306e\u8a73\u7d30\u3092\u4e0b\u4f4d\u306e\u5217\u6319\u578b\uff08MetaEvent\u3001MIDIEvent\u3001SysExEvent\uff09\u3067\u5b9a\u7fa9\u3057\u3066\u3044\u307e\u3059\u3002\u30d1\u30fc\u30b5\u30fc\u304cSMF\u3067\u30a4\u30d9\u30f3\u30c8\u3092\u767a\u898b\u3059\u308b\u305f\u3073\u306bMessage\u3092\u4f5c\u6210\u3057\u307e\u3059\u3002<\/p>\n<p>\u3061\u306a\u307f\u306bTrackChange\u3068\u3044\u3046\u30a4\u30d9\u30f3\u30c8\u306fSMF\u306b\u5b58\u5728\u3057\u307e\u305b\u3093\u304c\u3001\u5f8c\u8ff0\u306e\u3068\u304a\u308a\u30d1\u30fc\u30b5\u30fc\u306e\u8a2d\u8a08\u3092\u30a4\u30d9\u30f3\u30c8\u99c6\u52d5\u578b\u306b\u3059\u308b\u305f\u3081\u306b\u5b9a\u7fa9\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<h2>\u30a4\u30d9\u30f3\u30c8\u3088\u307f\u306b\u4e0e\u3075\u308b\u66f8<\/h2>\n<p>\u4eca\u56de\u306f\u4f5c\u6210\u3059\u308b\u306e\u306f\u30e9\u30a4\u30d6\u30e9\u30ea\u306a\u306e\u3067\u3001\u30a4\u30d9\u30f3\u30c8\u99c6\u52d5\u578b8\u3092\u63a1\u7528\u3057\u3001Observer\u30d1\u30bf\u30fc\u30f3\u3067\u5b9f\u88c5\u3057\u3066\u3044\u307e\u3059\u3002Rust\u306b\u30af\u30e9\u30b9\u3084\u30d7\u30ed\u30c8\u30bf\u30a4\u30d7\u306f\u5b58\u5728\u3057\u306a\u3044\u305f\u3081\u3001\u30c8\u30ec\u30a4\u30c8\u3067\u30aa\u30d6\u30b6\u30fc\u30d0\u30fc\u304c\u6e80\u305f\u3059\u3079\u304d\u5883\u754c\u3092\u5b9f\u88c5\u3057\u307e\u3059\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"k\">pub<\/span> <span class=\"k\">trait<\/span> <span class=\"n\">Handler<\/span> <span class=\"p\">{<\/span>\r\n    <span class=\"k\">fn<\/span> <span class=\"nf\">header<\/span><span class=\"p\">(<\/span><span class=\"o\">&amp;<\/span><span class=\"k\">mut<\/span> <span class=\"k\">self<\/span><span class=\"p\">,<\/span> <span class=\"n\">format<\/span><span class=\"p\">:<\/span> <span class=\"nb\">u16<\/span><span class=\"p\">,<\/span> <span class=\"n\">track<\/span><span class=\"p\">:<\/span> <span class=\"nb\">u16<\/span><span class=\"p\">,<\/span> <span class=\"n\">time_base<\/span><span class=\"p\">:<\/span> <span class=\"nb\">u16<\/span><span class=\"p\">)<\/span> <span class=\"p\">{<\/span>\r\n        <span class=\"k\">let<\/span> <span class=\"mi\">_<\/span> <span class=\"o\">=<\/span> <span class=\"p\">(<\/span><span class=\"n\">format<\/span><span class=\"p\">,<\/span> <span class=\"n\">track<\/span><span class=\"p\">,<\/span> <span class=\"n\">time_base<\/span><span class=\"p\">);<\/span>\r\n    <span class=\"p\">}<\/span>\r\n    <span class=\"k\">fn<\/span> <span class=\"nf\">meta_event<\/span><span class=\"p\">(<\/span><span class=\"o\">&amp;<\/span><span class=\"k\">mut<\/span> <span class=\"k\">self<\/span><span class=\"p\">,<\/span> <span class=\"n\">delta_time<\/span><span class=\"p\">:<\/span> <span class=\"nb\">u32<\/span><span class=\"p\">,<\/span> <span class=\"n\">event<\/span><span class=\"p\">:<\/span> <span class=\"o\">&amp;<\/span><span class=\"n\">MetaEvent<\/span><span class=\"p\">,<\/span> <span class=\"n\">data<\/span><span class=\"p\">:<\/span> <span class=\"o\">&amp;<\/span><span class=\"nb\">Vec<\/span><span class=\"o\">&lt;<\/span><span class=\"nb\">u8<\/span><span class=\"o\">&gt;<\/span><span class=\"p\">)<\/span> <span class=\"p\">{<\/span>\r\n        <span class=\"k\">let<\/span> <span class=\"mi\">_<\/span> <span class=\"o\">=<\/span> <span class=\"p\">(<\/span><span class=\"n\">delta_time<\/span><span class=\"p\">,<\/span> <span class=\"n\">event<\/span><span class=\"p\">,<\/span> <span class=\"n\">data<\/span><span class=\"p\">);<\/span>\r\n    <span class=\"p\">}<\/span>\r\n    <span class=\"k\">fn<\/span> <span class=\"nf\">midi_event<\/span><span class=\"p\">(<\/span><span class=\"o\">&amp;<\/span><span class=\"k\">mut<\/span> <span class=\"k\">self<\/span><span class=\"p\">,<\/span> <span class=\"n\">delta_time<\/span><span class=\"p\">:<\/span> <span class=\"nb\">u32<\/span><span class=\"p\">,<\/span> <span class=\"n\">event<\/span><span class=\"p\">:<\/span> <span class=\"o\">&amp;<\/span><span class=\"n\">MidiEvent<\/span><span class=\"p\">)<\/span> <span class=\"p\">{<\/span>\r\n        <span class=\"k\">let<\/span> <span class=\"mi\">_<\/span> <span class=\"o\">=<\/span> <span class=\"p\">(<\/span><span class=\"n\">delta_time<\/span><span class=\"p\">,<\/span> <span class=\"n\">event<\/span><span class=\"p\">);<\/span>\r\n    <span class=\"p\">}<\/span>\r\n    <span class=\"k\">fn<\/span> <span class=\"nf\">sys_ex_event<\/span><span class=\"p\">(<\/span><span class=\"o\">&amp;<\/span><span class=\"k\">mut<\/span> <span class=\"k\">self<\/span><span class=\"p\">,<\/span> <span class=\"n\">delta_time<\/span><span class=\"p\">:<\/span> <span class=\"nb\">u32<\/span><span class=\"p\">,<\/span> <span class=\"n\">event<\/span><span class=\"p\">:<\/span> <span class=\"o\">&amp;<\/span><span class=\"n\">SysExEvent<\/span><span class=\"p\">,<\/span> <span class=\"n\">data<\/span><span class=\"p\">:<\/span> <span class=\"o\">&amp;<\/span><span class=\"nb\">Vec<\/span><span class=\"o\">&lt;<\/span><span class=\"nb\">u8<\/span><span class=\"o\">&gt;<\/span><span class=\"p\">)<\/span> <span class=\"p\">{<\/span>\r\n        <span class=\"k\">let<\/span> <span class=\"mi\">_<\/span> <span class=\"o\">=<\/span> <span class=\"p\">(<\/span><span class=\"n\">delta_time<\/span><span class=\"p\">,<\/span> <span class=\"n\">event<\/span><span class=\"p\">,<\/span> <span class=\"n\">data<\/span><span class=\"p\">);<\/span>\r\n    <span class=\"p\">}<\/span>\r\n    <span class=\"k\">fn<\/span> <span class=\"nf\">track_change<\/span><span class=\"p\">(<\/span><span class=\"o\">&amp;<\/span><span class=\"k\">mut<\/span> <span class=\"k\">self<\/span><span class=\"p\">)<\/span> <span class=\"p\">{}<\/span>\r\n    <span class=\"k\">fn<\/span> <span class=\"nf\">status<\/span><span class=\"p\">(<\/span><span class=\"o\">&amp;<\/span><span class=\"k\">mut<\/span> <span class=\"k\">self<\/span><span class=\"p\">)<\/span> <span class=\"k\">-&gt;<\/span> <span class=\"n\">HandlerStatus<\/span> <span class=\"p\">{<\/span>\r\n        <span class=\"nn\">HandlerStatus<\/span><span class=\"p\">::<\/span><span class=\"n\">Continue<\/span>\r\n    <span class=\"p\">}<\/span>\r\n<span class=\"p\">}<\/span>\r\n<span class=\"k\">pub<\/span> <span class=\"k\">enum<\/span> <span class=\"n\">HandlerStatus<\/span> <span class=\"p\">{<\/span>\r\n    <span class=\"n\">Continue<\/span><span class=\"p\">,<\/span>\r\n    <span class=\"n\">SkipTrack<\/span><span class=\"p\">,<\/span>\r\n    <span class=\"n\">SkipAll<\/span><span class=\"p\">,<\/span>\r\n<span class=\"p\">}<\/span>\r\n<\/code><\/pre>\n<p>\u30d1\u30fc\u30b5\u30fc\u304cMIDI\u30a4\u30d9\u30f3\u30c8\u3092\u898b\u3064\u3051\u308b\u3068fn midi_event(&#8230;)\u3067\u3001\u30e1\u30bf\u30fb\u30a4\u30d9\u30f3\u30c8\u3092\u898b\u3064\u3051\u308b\u3068fn meta_event(&#8230;)\u3067\u3001\u4e8b\u524d\u306b\u767b\u9332\u3055\u308c\u305f\u30aa\u30d6\u30b6\u30fc\u30d0\u30fc\u306b\u901a\u77e5\u3057\u307e\u3059\u3002\u30a4\u30d9\u30f3\u30c8\u3092\u901a\u77e5\u3059\u308b\u3060\u3051\u3067\u306f\u30c8\u30e9\u30c3\u30af\u306e\u5909\u308f\u308a\u76ee\u3092\u4f1d\u3048\u3089\u308c\u306a\u3044\u305f\u3081\u3001fn track_change(&#8230;)\u3082\u7528\u610f\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<p>\u305d\u306e\u4ed6\u3001\u3053\u308c\u4ee5\u4e0a\u306e\u30d1\u30fc\u30b9\u304c\u4e0d\u8981\u306b\u306a\u3063\u305f\u969b\u306b\u30d5\u30a1\u30a4\u30ebIO\u3092\u30b9\u30ad\u30c3\u30d7\u3059\u308b\u305f\u3081\u3001fn status(&#8230;)\u3092\u901a\u3057\u3066\u3001\u30aa\u30d6\u30b6\u30fc\u30d0\u30fc\u304c\u72b6\u6cc1\u3092\u5217\u6319\u578bHandlerStatus\u3067\u30d1\u30fc\u30b5\u30fc\u306b\u4f1d\u3048\u3089\u308c\u308b\u3088\u3046\u306b\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<h2>\u89b3\u6e2c\u8005\u306b\u30e9\u30d6\u30bd\u30f3\u30b0\u3092<\/h2>\n<p>\u305d\u308c\u306f\u3044\u3088\u3044\u3088\u30d1\u30fc\u30b5\u30fc\u306e\u89e3\u8aac\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"k\">pub<\/span> <span class=\"k\">struct<\/span> <span class=\"n\">Reader<\/span> <span class=\"p\">{<\/span>\r\n    <span class=\"n\">file<\/span><span class=\"p\">:<\/span> <span class=\"nn\">io<\/span><span class=\"p\">::<\/span><span class=\"n\">BufReader<\/span><span class=\"o\">&lt;<\/span><span class=\"nn\">fs<\/span><span class=\"p\">::<\/span><span class=\"n\">File<\/span><span class=\"o\">&gt;<\/span><span class=\"p\">,<\/span>\r\n    <span class=\"n\">handlers<\/span><span class=\"p\">:<\/span> <span class=\"nb\">Vec<\/span><span class=\"o\">&lt;<\/span><span class=\"nb\">Box<\/span><span class=\"o\">&lt;<\/span><span class=\"n\">Handler<\/span><span class=\"o\">&gt;&gt;<\/span><span class=\"p\">,<\/span>\r\n    <span class=\"n\">path<\/span><span class=\"p\">:<\/span> <span class=\"nn\">path<\/span><span class=\"p\">::<\/span><span class=\"n\">PathBuf<\/span><span class=\"p\">,<\/span>\r\n<span class=\"p\">}<\/span>\r\n<span class=\"k\">impl<\/span> <span class=\"n\">Reader<\/span> <span class=\"p\">{<\/span>\r\n    <span class=\"k\">pub<\/span> <span class=\"k\">fn<\/span> <span class=\"nf\">new<\/span><span class=\"p\">(<\/span><span class=\"n\">handler<\/span><span class=\"p\">:<\/span> <span class=\"nb\">Box<\/span><span class=\"o\">&lt;<\/span><span class=\"n\">Handler<\/span><span class=\"o\">&gt;<\/span><span class=\"p\">,<\/span> <span class=\"n\">path<\/span><span class=\"p\">:<\/span> <span class=\"o\">&amp;<\/span><span class=\"nb\">str<\/span><span class=\"p\">)<\/span> <span class=\"k\">-&gt;<\/span> <span class=\"n\">Result<\/span><span class=\"o\">&lt;<\/span><span class=\"n\">Reader<\/span><span class=\"p\">,<\/span> <span class=\"n\">ReadError<\/span><span class=\"o\">&gt;<\/span> <span class=\"p\">{<\/span>\r\n        <span class=\"k\">let<\/span> <span class=\"k\">mut<\/span> <span class=\"n\">handlers<\/span><span class=\"p\">:<\/span> <span class=\"nb\">Vec<\/span><span class=\"o\">&lt;<\/span><span class=\"nb\">Box<\/span><span class=\"o\">&lt;<\/span><span class=\"n\">Handler<\/span><span class=\"o\">&gt;&gt;<\/span> <span class=\"o\">=<\/span> <span class=\"nn\">Vec<\/span><span class=\"p\">::<\/span><span class=\"nf\">new<\/span><span class=\"p\">();<\/span>\r\n        <span class=\"n\">handlers<\/span><span class=\"nf\">.push<\/span><span class=\"p\">(<\/span><span class=\"n\">handler<\/span><span class=\"p\">);<\/span>\r\n        <span class=\"nf\">Ok<\/span><span class=\"p\">(<\/span><span class=\"n\">Reader<\/span> <span class=\"p\">{<\/span>\r\n            <span class=\"n\">file<\/span><span class=\"p\">:<\/span> <span class=\"nn\">io<\/span><span class=\"p\">::<\/span><span class=\"nn\">BufReader<\/span><span class=\"p\">::<\/span><span class=\"nf\">new<\/span><span class=\"p\">(<\/span><span class=\"nn\">fs<\/span><span class=\"p\">::<\/span><span class=\"nn\">OpenOptions<\/span><span class=\"p\">::<\/span><span class=\"nf\">new<\/span><span class=\"p\">()<\/span><span class=\"nf\">.read<\/span><span class=\"p\">(<\/span><span class=\"k\">true<\/span><span class=\"p\">)<\/span><span class=\"nf\">.open<\/span><span class=\"p\">(<\/span><span class=\"o\">&amp;<\/span><span class=\"n\">path<\/span><span class=\"p\">)<\/span><span class=\"o\">?<\/span><span class=\"p\">),<\/span>\r\n            <span class=\"n\">path<\/span><span class=\"p\">:<\/span> <span class=\"nn\">path<\/span><span class=\"p\">::<\/span><span class=\"nn\">PathBuf<\/span><span class=\"p\">::<\/span><span class=\"nf\">from<\/span><span class=\"p\">(<\/span><span class=\"n\">path<\/span><span class=\"p\">),<\/span>\r\n            <span class=\"n\">handlers<\/span><span class=\"p\">:<\/span> <span class=\"n\">handlers<\/span><span class=\"p\">,<\/span>\r\n        <span class=\"p\">})<\/span>\r\n    <span class=\"p\">}<\/span>\r\n    <span class=\"k\">pub<\/span> <span class=\"k\">fn<\/span> <span class=\"nf\">read<\/span><span class=\"p\">(<\/span><span class=\"o\">&amp;<\/span><span class=\"k\">mut<\/span> <span class=\"k\">self<\/span><span class=\"p\">)<\/span> <span class=\"k\">-&gt;<\/span> <span class=\"n\">Result<\/span><span class=\"o\">&lt;<\/span><span class=\"p\">(),<\/span> <span class=\"n\">ReadError<\/span><span class=\"o\">&gt;<\/span> <span class=\"p\">{<\/span>\r\n        <span class=\"c\">\/\/ \u4e2d\u7565\uff1aHandler\u306e\u72b6\u614b\u30c1\u30a7\u30c3\u30af<\/span>\r\n        <span class=\"k\">self<\/span><span class=\"py\">.file<\/span><span class=\"nf\">.seek<\/span><span class=\"p\">(<\/span><span class=\"nn\">io<\/span><span class=\"p\">::<\/span><span class=\"nn\">SeekFrom<\/span><span class=\"p\">::<\/span><span class=\"nf\">Start<\/span><span class=\"p\">(<\/span><span class=\"mi\">0<\/span><span class=\"p\">))<\/span><span class=\"o\">?<\/span><span class=\"p\">;<\/span>\r\n        <span class=\"k\">self<\/span><span class=\"nf\">.check_tag<\/span><span class=\"p\">(<\/span><span class=\"nn\">Tag<\/span><span class=\"p\">::<\/span><span class=\"n\">Header<\/span><span class=\"p\">)<\/span><span class=\"o\">?<\/span><span class=\"p\">;<\/span>\r\n        <span class=\"k\">self<\/span><span class=\"nf\">.read_header_block<\/span><span class=\"p\">()<\/span><span class=\"o\">?<\/span><span class=\"p\">;<\/span>\r\n        <span class=\"k\">while<\/span> <span class=\"k\">self<\/span><span class=\"nf\">.check_tag<\/span><span class=\"p\">(<\/span><span class=\"nn\">Tag<\/span><span class=\"p\">::<\/span><span class=\"n\">Track<\/span><span class=\"p\">)<\/span><span class=\"o\">?<\/span> <span class=\"p\">{<\/span>\r\n            <span class=\"c\">\/\/ \u4e2d\u7565\uff1aHandler\u306e\u72b6\u614b\u30c1\u30a7\u30c3\u30af<\/span>\r\n            <span class=\"k\">self<\/span><span class=\"nf\">.read_track_block<\/span><span class=\"p\">()<\/span><span class=\"o\">?<\/span><span class=\"p\">;<\/span>\r\n        <span class=\"p\">}<\/span>\r\n        <span class=\"nf\">Ok<\/span><span class=\"p\">(())<\/span>\r\n    <span class=\"p\">}<\/span>\r\n    <span class=\"c\">\/\/ \u4e2d\u7565<\/span>\r\n<span class=\"p\">}<\/span>\r\n<\/code><\/pre>\n<p>Reader::new(&#8230;)\u3067\u89b3\u6e2c\u8005\u3084SMF\u306e\u30d5\u30a1\u30a4\u30eb\u30d1\u30b9\u3092\u767b\u9332\u3059\u308b\u3068\u3053\u308d\u304b\u3089\u30b9\u30bf\u30fc\u30c8\u3057\u307e\u3059\u3002Reader\u306e\u30e1\u30f3\u30d0\u30fchandlers\u304c\u30d9\u30af\u30bf\u30fc\u3067\u3042\u308b\u3053\u3068\u304b\u3089\u308f\u304b\u308b\u3068\u304a\u308a\u3001\u89b3\u6e2c\u8005\u306f\u8907\u6570\u767b\u9332\u3067\u304d\u307e\u30599\u3002\u6e96\u5099\u304c\u3067\u304d\u308c\u3070fn read(&#8230;)\u3067\u30d1\u30fc\u30b9\u958b\u59cb\u3002\u30d8\u30c3\u30c0\u30fc\u3092\u8aad\u307f\u7d42\u3048\u305f\u5f8c\u3001MIDI\u30a4\u30d9\u30f3\u30c8\u7b49\u3092\u8aad\u3080\u305f\u3081\u306e\u30e1\u30a4\u30f3\u30eb\u30fc\u30d7\u306b\u5165\u308a\u307e\u3059\u3002<\/p>\n<p>\u3061\u306a\u307f\u306b\u3001Rust\u3067\u30d5\u30a1\u30a4\u30eb\u5165\u51fa\u529b\u3092\u884c\u3046\u969b\u306fEOF\u30c1\u30a7\u30c3\u30af\u3068\u30d0\u30c3\u30d5\u30a1\u30ea\u30f3\u30b0\u306e\u6271\u3044\u304c\u76f4\u611f\uff08C\u8a00\u8a9e\uff09\u3068\u7570\u306a\u308b\u305f\u3081\u3001\u6ce8\u610f\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">mkaito\u6c0f\u30fbShepmaster\u6c0f\u300cHow to check for EOF with `read_line()`?\u300d\uff08stackoverflow\u30012014\u5e7412\u6708\uff09<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">gyu-don\u6c0f\u300cRust\u306e\u30d5\u30a1\u30a4\u30ebI\/O\u306b\u306fBufReader, BufWriter\u3092\u4f7f\u3044\u307e\u3057\u3087\u3046\u3001\u3068\u3044\u3046\u8a71\u300d\uff08Qiita\u8a18\u4e8b\u30012017\u5e74\uff13\u6708\uff09<\/ul>\n<p>MIDI\u30a4\u30d9\u30f3\u30c8\u7b49\u3092\u8aad\u3080\u30b3\u30fc\u30c9\u306f\u4ee5\u4e0b\u306e\u3068\u304a\u308a\u3002\u30c8\u30e9\u30c3\u30af\u5192\u982d\u306b\u8a18\u8ff0\u3055\u308c\u305f\u30c7\u30fc\u30bf\u30b5\u30a4\u30ba\u304c\u3064\u304d\u308b\u307e\u3067\u3001\u767a\u898b\u3057\u305f\u30a4\u30d9\u30f3\u30c8\u3092\u89b3\u6e2c\u8005\u306b\u77e5\u3089\u305b\u7d9a\u3051\u307e\u3059\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"k\">fn<\/span> <span class=\"nf\">read_track_block<\/span><span class=\"p\">(<\/span><span class=\"o\">&amp;<\/span><span class=\"k\">mut<\/span> <span class=\"k\">self<\/span><span class=\"p\">)<\/span> <span class=\"k\">-&gt;<\/span> <span class=\"n\">Result<\/span><span class=\"o\">&lt;&amp;<\/span><span class=\"k\">mut<\/span> <span class=\"n\">Reader<\/span><span class=\"p\">,<\/span> <span class=\"n\">ReadError<\/span><span class=\"o\">&gt;<\/span> <span class=\"p\">{<\/span>\r\n    <span class=\"k\">let<\/span> <span class=\"k\">mut<\/span> <span class=\"n\">data_size<\/span> <span class=\"o\">=<\/span> <span class=\"k\">self<\/span><span class=\"py\">.file.read_u32<\/span><span class=\"p\">::<\/span><span class=\"o\">&lt;<\/span><span class=\"n\">BigEndian<\/span><span class=\"o\">&gt;<\/span><span class=\"p\">()<\/span><span class=\"o\">?<\/span><span class=\"p\">;<\/span>\r\n    <span class=\"k\">while<\/span> <span class=\"n\">data_size<\/span> <span class=\"o\">&gt;<\/span> <span class=\"mi\">0<\/span> <span class=\"p\">{<\/span>\r\n        <span class=\"c\">\/\/ \u4e2d\u7565\uff1aHandler\u306e\u72b6\u614b\u30c1\u30a7\u30c3\u30af<\/span>\r\n        <span class=\"k\">let<\/span> <span class=\"n\">delta_time<\/span> <span class=\"o\">=<\/span> <span class=\"k\">self<\/span><span class=\"nf\">.read_vlq<\/span><span class=\"p\">()<\/span><span class=\"o\">?<\/span><span class=\"p\">;<\/span>\r\n        <span class=\"n\">data_size<\/span> <span class=\"o\">-=<\/span> <span class=\"n\">delta_time<\/span><span class=\"nf\">.len<\/span><span class=\"p\">()<\/span> <span class=\"k\">as<\/span> <span class=\"nb\">u32<\/span><span class=\"p\">;<\/span>\r\n        <span class=\"k\">let<\/span> <span class=\"k\">mut<\/span> <span class=\"n\">status<\/span> <span class=\"o\">=<\/span> <span class=\"k\">self<\/span><span class=\"py\">.file<\/span><span class=\"nf\">.read_u8<\/span><span class=\"p\">()<\/span><span class=\"o\">?<\/span><span class=\"p\">;<\/span>\r\n        <span class=\"c\">\/\/ \u4e2d\u7565\uff1a\u30e9\u30f3\u30cb\u30f3\u30b0\u30b9\u30c6\u30fc\u30bf\u30b9\u306e\u51e6\u7406<\/span>\r\n        <span class=\"n\">data_size<\/span> <span class=\"o\">-=<\/span> <span class=\"nn\">size_of<\/span><span class=\"p\">::<\/span><span class=\"o\">&lt;<\/span><span class=\"nb\">u8<\/span><span class=\"o\">&gt;<\/span><span class=\"p\">()<\/span> <span class=\"k\">as<\/span> <span class=\"nb\">u32<\/span><span class=\"p\">;<\/span>\r\n        <span class=\"k\">match<\/span> <span class=\"n\">status<\/span> <span class=\"p\">{<\/span>\r\n            <span class=\"mi\">0xff<\/span> <span class=\"k\">=&gt;<\/span> <span class=\"p\">{<\/span>\r\n                <span class=\"c\">\/\/ meta event\u306e\u51e6\u7406<\/span>\r\n                <span class=\"k\">let<\/span> <span class=\"n\">meta_event<\/span> <span class=\"o\">=<\/span> <span class=\"nn\">MetaEvent<\/span><span class=\"p\">::<\/span><span class=\"nf\">new<\/span><span class=\"p\">(<\/span><span class=\"k\">self<\/span><span class=\"py\">.file<\/span><span class=\"nf\">.read_u8<\/span><span class=\"p\">()<\/span><span class=\"o\">?<\/span><span class=\"p\">);<\/span>\r\n                <span class=\"n\">data_size<\/span> <span class=\"o\">-=<\/span> <span class=\"nn\">size_of<\/span><span class=\"p\">::<\/span><span class=\"o\">&lt;<\/span><span class=\"nb\">u8<\/span><span class=\"o\">&gt;<\/span><span class=\"p\">()<\/span> <span class=\"k\">as<\/span> <span class=\"nb\">u32<\/span><span class=\"p\">;<\/span>\r\n                <span class=\"k\">let<\/span> <span class=\"n\">len<\/span> <span class=\"o\">=<\/span> <span class=\"k\">self<\/span><span class=\"nf\">.read_vlq<\/span><span class=\"p\">()<\/span><span class=\"o\">?<\/span><span class=\"p\">;<\/span>\r\n                <span class=\"k\">let<\/span> <span class=\"n\">data<\/span> <span class=\"o\">=<\/span> <span class=\"k\">self<\/span><span class=\"nf\">.read_data<\/span><span class=\"p\">(<\/span><span class=\"o\">&amp;<\/span><span class=\"n\">len<\/span><span class=\"p\">)<\/span><span class=\"o\">?<\/span><span class=\"p\">;<\/span>\r\n                <span class=\"n\">data_size<\/span> <span class=\"o\">-=<\/span> <span class=\"n\">len<\/span><span class=\"nf\">.len<\/span><span class=\"p\">()<\/span> <span class=\"k\">as<\/span> <span class=\"nb\">u32<\/span> <span class=\"o\">+<\/span> <span class=\"n\">len<\/span><span class=\"nf\">.val<\/span><span class=\"p\">();<\/span>\r\n                <span class=\"k\">for<\/span> <span class=\"n\">handler<\/span> <span class=\"n\">in<\/span> <span class=\"o\">&amp;<\/span><span class=\"k\">mut<\/span> <span class=\"k\">self<\/span><span class=\"py\">.handlers<\/span> <span class=\"p\">{<\/span>\r\n                    <span class=\"k\">if<\/span> <span class=\"n\">handler<\/span><span class=\"nf\">.status<\/span><span class=\"p\">()<\/span> <span class=\"o\">==<\/span> <span class=\"nn\">HandlerStatus<\/span><span class=\"p\">::<\/span><span class=\"n\">Continue<\/span> <span class=\"p\">{<\/span>\r\n                        <span class=\"n\">handler<\/span><span class=\"nf\">.meta_event<\/span><span class=\"p\">(<\/span><span class=\"n\">delta_time<\/span><span class=\"nf\">.val<\/span><span class=\"p\">(),<\/span> <span class=\"o\">&amp;<\/span><span class=\"n\">meta_event<\/span><span class=\"p\">,<\/span> <span class=\"o\">&amp;<\/span><span class=\"n\">data<\/span><span class=\"p\">);<\/span>\r\n                    <span class=\"p\">}<\/span>\r\n                <span class=\"p\">}<\/span>\r\n            <span class=\"p\">}<\/span>\r\n            <span class=\"mi\">0x80<\/span><span class=\"o\">...<\/span><span class=\"mi\">0xef<\/span> <span class=\"k\">=&gt;<\/span> <span class=\"p\">{<\/span>\r\n                <span class=\"c\">\/\/ \u4e2d\u7565\uff1amidi event\u306e\u51e6\u7406<\/span>\r\n            <span class=\"p\">}<\/span>\r\n            <span class=\"mi\">0xf0<\/span> <span class=\"p\">|<\/span> <span class=\"mi\">0xf7<\/span> <span class=\"k\">=&gt;<\/span> <span class=\"p\">{<\/span>\r\n                <span class=\"c\">\/\/ \u4e2d\u7565\uff1asystem exclusive event\u306e\u51e6\u7406<\/span>\r\n            <span class=\"p\">}<\/span>\r\n            <span class=\"mi\">_<\/span> <span class=\"k\">=&gt;<\/span> <span class=\"p\">{<\/span>\r\n                <span class=\"c\">\/\/ \u4e2d\u7565\uff1a\u60f3\u5b9a\u5916\u306e\u30a4\u30d9\u30f3\u30c8\u304c\u767a\u898b\u3055\u308c\u305f\u969b\u306e\u30a8\u30e9\u30fc\u51e6\u7406<\/span>\r\n            <span class=\"p\">}<\/span>\r\n        <span class=\"p\">};<\/span>\r\n    <span class=\"p\">}<\/span>\r\n    <span class=\"nf\">Ok<\/span><span class=\"p\">(<\/span><span class=\"k\">self<\/span><span class=\"p\">)<\/span>\r\n<span class=\"p\">}<\/span>\r\n<\/code><\/pre>\n<p>SMF\u306e\u5404\u30a4\u30d9\u30f3\u30c8\u306f\u5148\u982d\u306e\u30b9\u30c6\u30fc\u30bf\u30b9\u30d0\u30a4\u30c8\u3067\u305d\u306e\u7a2e\u985e\u3092\u5224\u5225\u3059\u308b\u305f\u3081\u3001\u5f53\u8a72\u30d0\u30a4\u30c8\u3092match\u3067\u632f\u308a\u5206\u3051\u3066\u51e6\u7406\u3057\u3066\u3044\u307e\u3059\u3002\u3068\u3053\u308d\u3067\u3001SMF\u306f\u30d3\u30c3\u30b0\u30a8\u30f3\u30c7\u30a3\u30a2\u30f3\u3067\u5024\u304c\u683c\u7d0d\u3055\u308c\u3066\u3044\u308b\u305f\u3081\u3001byteorder\u3068\u3044\u3046\u30af\u30ec\u30fc\u30c8\u3092\u4f7f\u7528\u3057\u3066\u3044\u307e\u3059\u3002\u4fbf\u5229\u3067\u3059\u306d\u3002\u3061\u306a\u307f\u306b\u3001MetaEvent::new(&#8230;)\u306a\u3093\u3066\u3057\u308c\u3063\u3068\u4f7f\u3063\u3066\u3044\u307e\u3059\u304c\u3001\u3053\u308c\u306f\u3001Rust\u3067\u306f\u5217\u6319\u4f53\u306b\u30e1\u30bd\u30c3\u30c9\u3092\u5b9f\u88c5\u3067\u304d\u308b\u305f\u3081\u3067\u3059\u3002\u305d\u306e\u4ed6\u3001\u30d0\u30a4\u30ca\u30ea\u3092\u4f5c\u6210\u3059\u308b\u30e1\u30bd\u30c3\u30c9fn binary(&#8230;)\u7b49\u3092\u72ec\u81ea\u306b\u5b9f\u88c5\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<p>\u306a\u304a\u3001\u4eca\u56de\u306f\u30e9\u30a4\u30d6\u30e9\u30ea\u3092\u4f5c\u6210\u3057\u3066\u3044\u308b\u305f\u3081\u3001\u30a8\u30e9\u30fc\u51e6\u740610\u3092\u4ee5\u4e0b\u306e\u3068\u304a\u308a\u5c11\u3057\u4e01\u5be7\u306b\u66f8\u3044\u3066\u3044\u307e\u3059\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"k\">pub<\/span> <span class=\"k\">enum<\/span> <span class=\"n\">ReadError<\/span> <span class=\"p\">{<\/span>\r\n    <span class=\"n\">InvalidHeaderTag<\/span> <span class=\"p\">{<\/span> <span class=\"n\">tag<\/span><span class=\"p\">:<\/span> <span class=\"p\">[<\/span><span class=\"nb\">u8<\/span><span class=\"p\">;<\/span> <span class=\"mi\">4<\/span><span class=\"p\">],<\/span> <span class=\"n\">path<\/span><span class=\"p\">:<\/span> <span class=\"nn\">path<\/span><span class=\"p\">::<\/span><span class=\"n\">PathBuf<\/span> <span class=\"p\">},<\/span>\r\n    <span class=\"n\">InvalidIdentifyCode<\/span> <span class=\"p\">{<\/span> <span class=\"n\">code<\/span><span class=\"p\">:<\/span> <span class=\"nb\">u32<\/span><span class=\"p\">,<\/span> <span class=\"n\">path<\/span><span class=\"p\">:<\/span> <span class=\"nn\">path<\/span><span class=\"p\">::<\/span><span class=\"n\">PathBuf<\/span> <span class=\"p\">},<\/span>\r\n    <span class=\"n\">InvalidTrackTag<\/span> <span class=\"p\">{<\/span> <span class=\"n\">tag<\/span><span class=\"p\">:<\/span> <span class=\"p\">[<\/span><span class=\"nb\">u8<\/span><span class=\"p\">;<\/span> <span class=\"mi\">4<\/span><span class=\"p\">],<\/span> <span class=\"n\">path<\/span><span class=\"p\">:<\/span> <span class=\"nn\">path<\/span><span class=\"p\">::<\/span><span class=\"n\">PathBuf<\/span> <span class=\"p\">},<\/span>\r\n    <span class=\"nf\">Io<\/span><span class=\"p\">(<\/span><span class=\"nn\">io<\/span><span class=\"p\">::<\/span><span class=\"n\">Error<\/span><span class=\"p\">),<\/span>\r\n    <span class=\"n\">NoValidHandler<\/span><span class=\"p\">,<\/span>\r\n    <span class=\"n\">UnknownMessageStatus<\/span> <span class=\"p\">{<\/span> <span class=\"n\">status<\/span><span class=\"p\">:<\/span> <span class=\"nb\">u8<\/span><span class=\"p\">,<\/span> <span class=\"n\">path<\/span><span class=\"p\">:<\/span> <span class=\"nn\">path<\/span><span class=\"p\">::<\/span><span class=\"n\">PathBuf<\/span> <span class=\"p\">},<\/span>\r\n<span class=\"p\">}<\/span>\r\n<span class=\"k\">impl<\/span> <span class=\"nn\">fmt<\/span><span class=\"p\">::<\/span><span class=\"n\">Display<\/span> <span class=\"k\">for<\/span> <span class=\"n\">ReadError<\/span> <span class=\"p\">{<\/span>\r\n    <span class=\"k\">fn<\/span> <span class=\"nf\">fmt<\/span><span class=\"p\">(<\/span><span class=\"o\">&amp;<\/span><span class=\"k\">self<\/span><span class=\"p\">,<\/span> <span class=\"n\">f<\/span><span class=\"p\">:<\/span> <span class=\"o\">&amp;<\/span><span class=\"k\">mut<\/span> <span class=\"nn\">fmt<\/span><span class=\"p\">::<\/span><span class=\"n\">Formatter<\/span><span class=\"p\">)<\/span> <span class=\"k\">-&gt;<\/span> <span class=\"nn\">fmt<\/span><span class=\"p\">::<\/span><span class=\"n\">Result<\/span> <span class=\"p\">{<\/span>\r\n        <span class=\"k\">use<\/span> <span class=\"nn\">reader<\/span><span class=\"p\">::<\/span><span class=\"nn\">ReadError<\/span><span class=\"p\">::<\/span><span class=\"o\">*<\/span><span class=\"p\">;<\/span>\r\n        <span class=\"k\">match<\/span> <span class=\"o\">*<\/span><span class=\"k\">self<\/span> <span class=\"p\">{<\/span>\r\n            <span class=\"n\">InvalidHeaderTag<\/span> <span class=\"p\">{<\/span> <span class=\"n\">tag<\/span><span class=\"p\">,<\/span> <span class=\"k\">ref<\/span> <span class=\"n\">path<\/span> <span class=\"p\">}<\/span> <span class=\"k\">=&gt;<\/span> <span class=\"p\">{<\/span>\r\n                <span class=\"nd\">write!<\/span><span class=\"p\">(<\/span>\r\n                    <span class=\"n\">f<\/span><span class=\"p\">,<\/span>\r\n                    <span class=\"s\">\"Invalid header tag '{:?}' has found: {}\"<\/span><span class=\"p\">,<\/span>\r\n                    <span class=\"n\">tag<\/span><span class=\"p\">,<\/span>\r\n                    <span class=\"nn\">fs<\/span><span class=\"p\">::<\/span><span class=\"nf\">canonicalize<\/span><span class=\"p\">(<\/span><span class=\"o\">&amp;<\/span><span class=\"n\">path<\/span><span class=\"p\">)<\/span><span class=\"nf\">.unwrap<\/span><span class=\"p\">()<\/span><span class=\"nf\">.display<\/span><span class=\"p\">()<\/span>\r\n                <span class=\"p\">)<\/span>\r\n            <span class=\"p\">}<\/span>\r\n            <span class=\"c\">\/\/ \u4e2d\u7565<\/span>\r\n        <span class=\"p\">}<\/span>\r\n    <span class=\"p\">}<\/span>\r\n<span class=\"p\">}<\/span>\r\n<span class=\"k\">impl<\/span> <span class=\"nn\">error<\/span><span class=\"p\">::<\/span><span class=\"n\">Error<\/span> <span class=\"k\">for<\/span> <span class=\"n\">ReadError<\/span> <span class=\"p\">{<\/span>\r\n    <span class=\"k\">fn<\/span> <span class=\"nf\">description<\/span><span class=\"p\">(<\/span><span class=\"o\">&amp;<\/span><span class=\"k\">self<\/span><span class=\"p\">)<\/span> <span class=\"k\">-&gt;<\/span> <span class=\"o\">&amp;<\/span><span class=\"nb\">str<\/span> <span class=\"p\">{<\/span>\r\n        <span class=\"k\">use<\/span> <span class=\"nn\">reader<\/span><span class=\"p\">::<\/span><span class=\"nn\">ReadError<\/span><span class=\"p\">::<\/span><span class=\"o\">*<\/span><span class=\"p\">;<\/span>\r\n        <span class=\"k\">match<\/span> <span class=\"o\">*<\/span><span class=\"k\">self<\/span> <span class=\"p\">{<\/span>\r\n            <span class=\"n\">InvalidHeaderTag<\/span> <span class=\"p\">{<\/span> <span class=\"o\">..<\/span> <span class=\"p\">}<\/span> <span class=\"k\">=&gt;<\/span> <span class=\"s\">\"\uff08\u30a8\u30e9\u30fc\u6587\uff09\"<\/span><span class=\"p\">,<\/span>\r\n            <span class=\"c\">\/\/ \u4e2d\u7565<\/span>\r\n        <span class=\"p\">}<\/span>\r\n    <span class=\"p\">}<\/span>\r\n<span class=\"p\">}<\/span>\r\n<span class=\"k\">impl<\/span> <span class=\"n\">From<\/span><span class=\"o\">&lt;<\/span><span class=\"nn\">io<\/span><span class=\"p\">::<\/span><span class=\"n\">Error<\/span><span class=\"o\">&gt;<\/span> <span class=\"k\">for<\/span> <span class=\"n\">ReadError<\/span> <span class=\"p\">{<\/span>\r\n    <span class=\"k\">fn<\/span> <span class=\"nf\">from<\/span><span class=\"p\">(<\/span><span class=\"n\">err<\/span><span class=\"p\">:<\/span> <span class=\"nn\">io<\/span><span class=\"p\">::<\/span><span class=\"n\">Error<\/span><span class=\"p\">)<\/span> <span class=\"k\">-&gt;<\/span> <span class=\"n\">ReadError<\/span> <span class=\"p\">{<\/span>\r\n        <span class=\"nn\">ReadError<\/span><span class=\"p\">::<\/span><span class=\"nf\">Io<\/span><span class=\"p\">(<\/span><span class=\"n\">err<\/span><span class=\"p\">)<\/span>\r\n    <span class=\"p\">}<\/span>\r\n<span class=\"p\">}<\/span>\r\n<\/code><\/pre>\n<p>\u30d1\u30fc\u30b9\u6642\u306b\u751f\u3058\u3046\u308b\u5404\u7a2e\u30a8\u30e9\u30fc\u3092\u5217\u6319\u4f53ReadError\u306b\u63b2\u3052\u3001\u30a8\u30e9\u30fc\u3092\u8868\u73fe\u3059\u308berror::Error\u30c8\u30ec\u30a4\u30c8\u53ca\u3073\u30c7\u30d0\u30c3\u30b0\u6642\u306e\u8868\u793a\u3092\u5b9a\u3081\u308bstd::fmt::Display\u30c8\u30ec\u30a4\u30c8\u3092\u5b9f\u88c5\u3057\u3066\u3044\u307e\u3059\u3002\u307e\u305f\u3001ReadError\u306e\u3046\u3061std::io::Error\u306fstd\u30e2\u30b8\u30e5\u30fc\u30eb\u306b\u5b9a\u7fa9\u3055\u308c\u308b\u30a8\u30e9\u30fc\u3067\u3059\u306e\u3067\u3001ReadError\u306b\u5909\u63db\u3059\u308bFrom\u30c8\u30ec\u30a4\u30c8\u3082\u5b9f\u88c5\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<h2>SMF\u306b\u304b\u3051\u308b\u6a4b<\/h2>\n<p>\u3068\u3053\u308d\u3067\u3001\u305b\u3063\u304b\u304f\u30d1\u30fc\u30b5\u30fc\u3092\u4f5c\u3063\u305f\u306e\u3060\u304b\u3089\u3001\u66f8\u304d\u51fa\u3057\u3082\u63c3\u3048\u305f\u304f\u306a\u308a\u307e\u305b\u3093\u304b\uff1f\u3068\u3044\u3046\u308f\u3051\u3067\u305d\u306e\u5b8c\u6210\u5f62\u304c\u3053\u3061\u3089\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"k\">pub<\/span> <span class=\"k\">struct<\/span> <span class=\"n\">Writer<\/span> <span class=\"p\">{<\/span>\r\n    <span class=\"n\">messages<\/span><span class=\"p\">:<\/span> <span class=\"nb\">Vec<\/span><span class=\"o\">&lt;<\/span><span class=\"n\">Message<\/span><span class=\"o\">&gt;<\/span><span class=\"p\">,<\/span>\r\n    <span class=\"c\">\/\/ \u4e2d\u7565<\/span>\r\n<span class=\"p\">}<\/span>\r\n<span class=\"k\">impl<\/span> <span class=\"n\">Writer<\/span> <span class=\"p\">{<\/span>\r\n    <span class=\"k\">pub<\/span> <span class=\"k\">fn<\/span> <span class=\"nf\">new<\/span><span class=\"p\">()<\/span> <span class=\"k\">-&gt;<\/span> <span class=\"n\">Writer<\/span> <span class=\"p\">{<\/span>\r\n        <span class=\"n\">Writer<\/span> <span class=\"p\">{<\/span>\r\n            <span class=\"n\">messages<\/span><span class=\"p\">:<\/span> <span class=\"nn\">Vec<\/span><span class=\"p\">::<\/span><span class=\"nf\">new<\/span><span class=\"p\">(),<\/span>\r\n            <span class=\"c\">\/\/ \u4e2d\u7565<\/span>\r\n        <span class=\"p\">}<\/span>\r\n    <span class=\"p\">}<\/span>\r\n    <span class=\"k\">pub<\/span> <span class=\"k\">fn<\/span> <span class=\"nf\">push<\/span><span class=\"p\">(<\/span><span class=\"o\">&amp;<\/span><span class=\"k\">mut<\/span> <span class=\"k\">self<\/span><span class=\"p\">,<\/span> <span class=\"n\">message<\/span><span class=\"p\">:<\/span> <span class=\"n\">Message<\/span><span class=\"p\">)<\/span> <span class=\"p\">{<\/span>\r\n        <span class=\"k\">self<\/span><span class=\"py\">.messages<\/span><span class=\"nf\">.push<\/span><span class=\"p\">(<\/span><span class=\"n\">message<\/span><span class=\"p\">);<\/span>\r\n    <span class=\"p\">}<\/span>\r\n    <span class=\"c\">\/\/ \u4e2d\u7565<\/span>\r\n    <span class=\"k\">pub<\/span> <span class=\"k\">fn<\/span> <span class=\"nf\">write<\/span><span class=\"p\">(<\/span><span class=\"o\">&amp;<\/span><span class=\"k\">self<\/span><span class=\"p\">,<\/span> <span class=\"n\">path<\/span><span class=\"p\">:<\/span> <span class=\"o\">&amp;<\/span><span class=\"nb\">str<\/span><span class=\"p\">)<\/span> <span class=\"k\">-&gt;<\/span> <span class=\"n\">Result<\/span><span class=\"o\">&lt;<\/span><span class=\"p\">(),<\/span> <span class=\"nn\">io<\/span><span class=\"p\">::<\/span><span class=\"n\">Error<\/span><span class=\"o\">&gt;<\/span> <span class=\"p\">{<\/span>\r\n        <span class=\"k\">let<\/span> <span class=\"n\">path<\/span> <span class=\"o\">=<\/span> <span class=\"nn\">path<\/span><span class=\"p\">::<\/span><span class=\"nn\">Path<\/span><span class=\"p\">::<\/span><span class=\"nf\">new<\/span><span class=\"p\">(<\/span><span class=\"n\">path<\/span><span class=\"p\">);<\/span>\r\n        <span class=\"k\">let<\/span> <span class=\"k\">mut<\/span> <span class=\"n\">file<\/span> <span class=\"o\">=<\/span> <span class=\"nn\">io<\/span><span class=\"p\">::<\/span><span class=\"nn\">BufWriter<\/span><span class=\"p\">::<\/span><span class=\"nf\">new<\/span><span class=\"p\">(<\/span><span class=\"nn\">fs<\/span><span class=\"p\">::<\/span><span class=\"nn\">OpenOptions<\/span><span class=\"p\">::<\/span><span class=\"nf\">new<\/span><span class=\"p\">()<\/span>\r\n            <span class=\"nf\">.write<\/span><span class=\"p\">(<\/span><span class=\"k\">true<\/span><span class=\"p\">)<\/span>\r\n            <span class=\"nf\">.truncate<\/span><span class=\"p\">(<\/span><span class=\"k\">true<\/span><span class=\"p\">)<\/span>\r\n            <span class=\"nf\">.create<\/span><span class=\"p\">(<\/span><span class=\"k\">true<\/span><span class=\"p\">)<\/span>\r\n            <span class=\"nf\">.open<\/span><span class=\"p\">(<\/span><span class=\"n\">path<\/span><span class=\"p\">)<\/span><span class=\"o\">?<\/span><span class=\"p\">);<\/span>\r\n        <span class=\"c\">\/\/ \u4e2d\u7565\uff1a\u30d8\u30c3\u30c0\u30fc\u66f8\u304d\u8fbc\u307f<\/span>\r\n        <span class=\"k\">for<\/span> <span class=\"n\">message<\/span> <span class=\"n\">in<\/span> <span class=\"k\">self<\/span><span class=\"py\">.messages<\/span><span class=\"nf\">.iter<\/span><span class=\"p\">()<\/span> <span class=\"p\">{<\/span>\r\n            <span class=\"k\">match<\/span> <span class=\"o\">*<\/span><span class=\"n\">message<\/span> <span class=\"p\">{<\/span>\r\n                <span class=\"nn\">Message<\/span><span class=\"p\">::<\/span><span class=\"n\">TrackChange<\/span> <span class=\"k\">=&gt;<\/span> <span class=\"p\">{<\/span>\r\n                    <span class=\"n\">file<\/span><span class=\"nf\">.write<\/span><span class=\"p\">(<\/span><span class=\"o\">&amp;<\/span><span class=\"nn\">Message<\/span><span class=\"p\">::<\/span><span class=\"n\">TrackChange<\/span><span class=\"nf\">.binary<\/span><span class=\"p\">())<\/span><span class=\"o\">?<\/span><span class=\"p\">;<\/span>\r\n                    <span class=\"c\">\/\/ \u4e2d\u7565\uff1a\u30c8\u30e9\u30c3\u30af\u30b5\u30a4\u30ba\u306e\u66f8\u304d\u8fbc\u307f<\/span>\r\n                <span class=\"p\">}<\/span>\r\n                <span class=\"mi\">_<\/span> <span class=\"k\">=&gt;<\/span> <span class=\"p\">{<\/span>\r\n                    <span class=\"c\">\/\/ \u30e9\u30f3\u30cb\u30f3\u30b0\u30b9\u30c6\u30fc\u30bf\u30b9\u306b\u95a2\u3059\u308b\u51e6\u7406\u306f\u7701\u7565\u3057\u3066\u3044\u307e\u3059<\/span>\r\n                    <span class=\"n\">file<\/span><span class=\"nf\">.write<\/span><span class=\"p\">(<\/span><span class=\"o\">&amp;<\/span><span class=\"n\">message<\/span><span class=\"nf\">.binary<\/span><span class=\"p\">())<\/span><span class=\"o\">?<\/span><span class=\"p\">;<\/span>\r\n                <span class=\"p\">}<\/span>\r\n            <span class=\"p\">}<\/span>\r\n        <span class=\"p\">}<\/span>\r\n        <span class=\"nf\">Ok<\/span><span class=\"p\">(<\/span><span class=\"n\">file<\/span><span class=\"nf\">.flush<\/span><span class=\"p\">()<\/span><span class=\"o\">?<\/span><span class=\"p\">)<\/span>\r\n    <span class=\"p\">}<\/span>\r\n<span class=\"p\">}<\/span>\r\n<\/code><\/pre>\n<p>Message\u3092\u4e8b\u524d\u306b\u914d\u5217\u306e\u5f62\u3067\u767b\u9332\u3057\u3066\u304a\u304d\u3001\u9806\u306b\u66f8\u304d\u51fa\u3057\u3066\u3044\u307e\u3059\u3002Message\u3092\u30d0\u30a4\u30ca\u30ea\u5316\u3059\u308b\u9762\u5012\u306a\u51e6\u7406\u306f\u5168\u3066Message\u306b\u5b9f\u88c5\u3057\u305ffn binary(&#8230;)\u306b\u5206\u96e2\u3059\u308b\u3053\u3068\u3067\u898b\u901a\u3057\u3092\u826f\u304f\u3057\u3066\u3044\u307e\u3059\u3002\u306a\u304a\u3001std::io::BufWriter\u3067\u30d5\u30a1\u30a4\u30eb\u3078\u306e\u66f8\u304d\u51fa\u3057\u3092\u884c\u3046\u5834\u5408\u3001\u30e9\u30a4\u30d5\u30bf\u30a4\u30e0\u306e\u7d42\u308f\u308a\u3067\u30a8\u30e9\u30fc\u304c\u51fa\u3066\u3082\u7121\u8996\u3055\u308c\u3066\u3057\u307e\u3046\u305f\u3081\u3001\u6700\u5f8c\u306bfn flush(&#8230;)\u3092\u547c\u3076\u306e\u304c\u304a\u4f5c\u6cd5\u3068\u306a\u3063\u3066\u3044\u307e\u3059\u3002<\/p>\n<ul class=\"post-ul\">\u03baeen\u6c0f\u300cRust\u3067\u30a8\u30e9\u30fc\u304c\u51fa\u3066\u306a\u3044\u306e\u306b\u30d5\u30a1\u30a4\u30eb\u306b\u66f8\u304d\u51fa\u305b\u306a\u3044\u3068\u304d\u306f\u300d\uff08\u500b\u4eba\u30d6\u30ed\u30b0\u30012017\u5e74\uff16\u6708\uff09<\/ul>\n<h2>\u8ca8\u7269\u691c\u67fb\u3068\u30cf\u30fc\u30c9\u30dc\u30a4\u30eb\u30c9\u30fb\u30ef\u30f3\u30c0\u30fc\u30e9\u30f3\u30c9<\/h2>\n<p>\u6642\u4ee3\u306f\u4fbf\u5229\u306b\u306a\u3063\u305f\u3082\u306e\u3067\u3001Rust\u3067\u306fCargo\u306b\u3088\u308a\uff13\u7a2e\u985e\u306e\u30c6\u30b9\u30c811\u3092\u66f8\u3051\u307e\u3059\u3002\u4f8b\u3048\u3070\u4ee5\u4e0b\u306ftests\u30e2\u30b8\u30e5\u30fc\u30eb\u306b\u8a18\u8ff0\u3057\u305f\u30c6\u30b9\u30c8\u3002\u69cb\u9020\u4f53VLQ\u53ca\u3073VLQBuilder\u3092\u8a18\u8ff0\u3057\u3066\u3044\u308b\u30d5\u30a1\u30a4\u30ebsrc\/formats.rs\u306b\u4e00\u7dd2\u306b\u8a18\u8ff0\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"nd\">#[cfg(test)]<\/span>\r\n<span class=\"k\">mod<\/span> <span class=\"n\">vlq_tests<\/span> <span class=\"p\">{<\/span>\r\n    <span class=\"k\">use<\/span> <span class=\"nn\">formats<\/span><span class=\"p\">::<\/span><span class=\"o\">*<\/span><span class=\"p\">;<\/span>\r\n    <span class=\"nd\">#[test]<\/span>\r\n    <span class=\"k\">fn<\/span> <span class=\"nf\">binary_98327<\/span><span class=\"p\">()<\/span> <span class=\"p\">{<\/span>\r\n        <span class=\"k\">let<\/span> <span class=\"n\">tester<\/span> <span class=\"o\">=<\/span> <span class=\"nn\">VLQBuilder<\/span><span class=\"p\">::<\/span><span class=\"nf\">new<\/span><span class=\"p\">()<\/span><span class=\"nf\">.push<\/span><span class=\"p\">(<\/span><span class=\"mi\">134<\/span><span class=\"p\">)<\/span><span class=\"nf\">.push<\/span><span class=\"p\">(<\/span><span class=\"mi\">0b10000000<\/span><span class=\"p\">)<\/span><span class=\"nf\">.push<\/span><span class=\"p\">(<\/span><span class=\"mi\">23<\/span><span class=\"p\">)<\/span><span class=\"nf\">.build<\/span><span class=\"p\">();<\/span>\r\n        <span class=\"nd\">assert_eq!<\/span><span class=\"p\">(<\/span><span class=\"n\">tester<\/span><span class=\"nf\">.val<\/span><span class=\"p\">(),<\/span> <span class=\"mi\">98327<\/span><span class=\"p\">);<\/span>\r\n        <span class=\"nd\">assert_eq!<\/span><span class=\"p\">(<\/span><span class=\"n\">tester<\/span><span class=\"nf\">.len<\/span><span class=\"p\">(),<\/span> <span class=\"mi\">3<\/span><span class=\"p\">);<\/span>\r\n        <span class=\"nd\">assert_eq!<\/span><span class=\"p\">(<\/span><span class=\"n\">tester<\/span><span class=\"nf\">.binary<\/span><span class=\"p\">(),<\/span> <span class=\"p\">[<\/span><span class=\"mi\">134<\/span><span class=\"p\">,<\/span> <span class=\"mi\">0b10000000<\/span><span class=\"p\">,<\/span> <span class=\"mi\">23<\/span><span class=\"p\">]);<\/span>\r\n    <span class=\"p\">}<\/span>\r\n    <span class=\"c\">\/\/ \u4e2d\u7565\uff1a\u5883\u754c\u5024\u30c6\u30b9\u30c8\u7b49<\/span>\r\n<span class=\"p\">}<\/span>\r\n<\/code><\/pre>\n<p>\u30d3\u30c3\u30c8\u6f14\u7b97\u3092\u591a\u7528\u3059\u308bVLQ\u3082\u3053\u308c\u3067\uff08\u305d\u3053\u305d\u3053\uff09\u5b89\u5fc3\u3002\u307e\u305f\u3001tests\u30c7\u30a3\u30ec\u30af\u30c8\u30ea\u3092\u4f5c\u6210\u3057\u3066\u305d\u306e\u4e2d\u306b\u7d50\u5408\u30c6\u30b9\u30c8\u3092\u66f8\u304f\u3053\u3068\u3082\u3067\u304d\u307e\u3059\u3002\u4f8b\u3048\u3070\u3001\u4ee5\u4e0b\u306e\u30c6\u30b9\u30c8\u3092tests\/test.rs\u306b\u8a18\u8ff0\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"k\">extern<\/span> <span class=\"n\">crate<\/span> <span class=\"n\">byteorder<\/span><span class=\"p\">;<\/span>\r\n<span class=\"k\">extern<\/span> <span class=\"n\">crate<\/span> <span class=\"n\">ghakuf<\/span><span class=\"p\">;<\/span>\r\n\r\n<span class=\"k\">use<\/span> <span class=\"nn\">byteorder<\/span><span class=\"p\">::{<\/span><span class=\"n\">BigEndian<\/span><span class=\"p\">,<\/span> <span class=\"n\">WriteBytesExt<\/span><span class=\"p\">};<\/span>\r\n<span class=\"k\">use<\/span> <span class=\"nn\">ghakuf<\/span><span class=\"p\">::<\/span><span class=\"nn\">messages<\/span><span class=\"p\">::<\/span><span class=\"o\">*<\/span><span class=\"p\">;<\/span>\r\n<span class=\"k\">use<\/span> <span class=\"nn\">ghakuf<\/span><span class=\"p\">::<\/span><span class=\"nn\">writer<\/span><span class=\"p\">::<\/span><span class=\"o\">*<\/span><span class=\"p\">;<\/span>\r\n<span class=\"k\">use<\/span> <span class=\"nn\">std<\/span><span class=\"p\">::<\/span><span class=\"nn\">fs<\/span><span class=\"p\">::{<\/span><span class=\"n\">OpenOptions<\/span><span class=\"p\">,<\/span> <span class=\"n\">File<\/span><span class=\"p\">};<\/span>\r\n<span class=\"k\">use<\/span> <span class=\"nn\">std<\/span><span class=\"p\">::<\/span><span class=\"nn\">io<\/span><span class=\"p\">::<\/span><span class=\"nn\">prelude<\/span><span class=\"p\">::<\/span><span class=\"o\">*<\/span><span class=\"p\">;<\/span>\r\n<span class=\"k\">use<\/span> <span class=\"nn\">std<\/span><span class=\"p\">::<\/span><span class=\"nn\">io<\/span><span class=\"p\">::<\/span><span class=\"n\">Read<\/span><span class=\"p\">;<\/span>\r\n\r\n<span class=\"nd\">#[test]<\/span>\r\n<span class=\"k\">fn<\/span> <span class=\"nf\">build_integration_testing<\/span><span class=\"p\">()<\/span> <span class=\"p\">{<\/span>\r\n    <span class=\"k\">let<\/span> <span class=\"k\">mut<\/span> <span class=\"n\">writer<\/span> <span class=\"o\">=<\/span> <span class=\"nn\">Writer<\/span><span class=\"p\">::<\/span><span class=\"nf\">new<\/span><span class=\"p\">();<\/span>\r\n    <span class=\"k\">let<\/span> <span class=\"n\">test_messages<\/span> <span class=\"o\">=<\/span> <span class=\"nf\">test_messages<\/span><span class=\"p\">();<\/span>\r\n    <span class=\"k\">for<\/span> <span class=\"n\">message<\/span> <span class=\"n\">in<\/span> <span class=\"n\">test_messages<\/span> <span class=\"p\">{<\/span>\r\n        <span class=\"n\">writer<\/span><span class=\"nf\">.push<\/span><span class=\"p\">(<\/span><span class=\"n\">message<\/span><span class=\"p\">);<\/span>\r\n    <span class=\"p\">}<\/span>\r\n    <span class=\"k\">assert<\/span><span class=\"o\">!<\/span><span class=\"p\">(<\/span><span class=\"n\">writer<\/span><span class=\"nf\">.write<\/span><span class=\"p\">(<\/span><span class=\"s\">\"tests\/test_build.mid\"<\/span><span class=\"p\">)<\/span><span class=\"nf\">.is_ok<\/span><span class=\"p\">());<\/span>\r\n    <span class=\"k\">let<\/span> <span class=\"k\">mut<\/span> <span class=\"n\">data_write<\/span> <span class=\"o\">=<\/span> <span class=\"nn\">Vec<\/span><span class=\"p\">::<\/span><span class=\"nf\">new<\/span><span class=\"p\">();<\/span>\r\n    <span class=\"k\">let<\/span> <span class=\"k\">mut<\/span> <span class=\"n\">f<\/span> <span class=\"o\">=<\/span> <span class=\"nn\">File<\/span><span class=\"p\">::<\/span><span class=\"nf\">open<\/span><span class=\"p\">(<\/span><span class=\"s\">\"tests\/test_build.mid\"<\/span><span class=\"p\">)<\/span><span class=\"nf\">.unwrap<\/span><span class=\"p\">();<\/span>\r\n    <span class=\"n\">f<\/span><span class=\"nf\">.read_to_end<\/span><span class=\"p\">(<\/span><span class=\"o\">&amp;<\/span><span class=\"k\">mut<\/span> <span class=\"n\">data_write<\/span><span class=\"p\">)<\/span><span class=\"nf\">.unwrap<\/span><span class=\"p\">();<\/span>\r\n    <span class=\"k\">let<\/span> <span class=\"k\">mut<\/span> <span class=\"n\">data_read<\/span> <span class=\"o\">=<\/span> <span class=\"nn\">Vec<\/span><span class=\"p\">::<\/span><span class=\"nf\">new<\/span><span class=\"p\">();<\/span>\r\n    <span class=\"k\">let<\/span> <span class=\"k\">mut<\/span> <span class=\"n\">f<\/span> <span class=\"o\">=<\/span> <span class=\"nn\">File<\/span><span class=\"p\">::<\/span><span class=\"nf\">open<\/span><span class=\"p\">(<\/span><span class=\"s\">\"tests\/test.mid\"<\/span><span class=\"p\">)<\/span><span class=\"nf\">.unwrap<\/span><span class=\"p\">();<\/span>\r\n    <span class=\"n\">f<\/span><span class=\"nf\">.read_to_end<\/span><span class=\"p\">(<\/span><span class=\"o\">&amp;<\/span><span class=\"k\">mut<\/span> <span class=\"n\">data_read<\/span><span class=\"p\">)<\/span><span class=\"nf\">.unwrap<\/span><span class=\"p\">();<\/span>\r\n    <span class=\"k\">if<\/span> <span class=\"n\">data_read<\/span><span class=\"nf\">.len<\/span><span class=\"p\">()<\/span> <span class=\"o\">==<\/span> <span class=\"mi\">0<\/span> <span class=\"p\">||<\/span> <span class=\"n\">data_write<\/span><span class=\"nf\">.len<\/span><span class=\"p\">()<\/span> <span class=\"o\">==<\/span> <span class=\"mi\">0<\/span> <span class=\"p\">{<\/span>\r\n        <span class=\"k\">assert<\/span><span class=\"o\">!<\/span><span class=\"p\">(<\/span><span class=\"k\">false<\/span><span class=\"p\">);<\/span>\r\n    <span class=\"p\">}<\/span>\r\n    <span class=\"nd\">assert_eq!<\/span><span class=\"p\">(<\/span><span class=\"n\">data_read<\/span><span class=\"p\">,<\/span> <span class=\"n\">data_write<\/span><span class=\"p\">);<\/span>\r\n<span class=\"p\">}<\/span>\r\n\r\n<span class=\"k\">fn<\/span> <span class=\"nf\">test_messages<\/span><span class=\"p\">()<\/span> <span class=\"k\">-&gt;<\/span> <span class=\"nb\">Vec<\/span><span class=\"o\">&lt;<\/span><span class=\"n\">Message<\/span><span class=\"o\">&gt;<\/span> <span class=\"p\">{<\/span>\r\n    <span class=\"k\">let<\/span> <span class=\"k\">mut<\/span> <span class=\"n\">test_messages<\/span><span class=\"p\">:<\/span> <span class=\"nb\">Vec<\/span><span class=\"o\">&lt;<\/span><span class=\"n\">Message<\/span><span class=\"o\">&gt;<\/span> <span class=\"o\">=<\/span> <span class=\"nn\">Vec<\/span><span class=\"p\">::<\/span><span class=\"nf\">new<\/span><span class=\"p\">();<\/span>\r\n    <span class=\"k\">let<\/span> <span class=\"n\">tempo<\/span><span class=\"p\">:<\/span> <span class=\"nb\">u32<\/span> <span class=\"o\">=<\/span> <span class=\"mi\">60<\/span> <span class=\"o\">*<\/span> <span class=\"mi\">1000000<\/span> <span class=\"o\">\/<\/span> <span class=\"mi\">102<\/span><span class=\"p\">;<\/span> <span class=\"c\">\/\/bpm:102<\/span>\r\n    <span class=\"n\">test_messages<\/span><span class=\"nf\">.push<\/span><span class=\"p\">(<\/span><span class=\"nn\">Message<\/span><span class=\"p\">::<\/span><span class=\"n\">MetaEvent<\/span> <span class=\"p\">{<\/span>\r\n        <span class=\"n\">delta_time<\/span><span class=\"p\">:<\/span> <span class=\"mi\">0<\/span><span class=\"p\">,<\/span>\r\n        <span class=\"n\">event<\/span><span class=\"p\">:<\/span> <span class=\"nn\">MetaEvent<\/span><span class=\"p\">::<\/span><span class=\"n\">SetTempo<\/span><span class=\"p\">,<\/span>\r\n        <span class=\"n\">data<\/span><span class=\"p\">:<\/span> <span class=\"p\">[(<\/span><span class=\"n\">tempo<\/span> <span class=\"o\">&gt;&gt;<\/span> <span class=\"mi\">16<\/span><span class=\"p\">)<\/span> <span class=\"k\">as<\/span> <span class=\"nb\">u8<\/span><span class=\"p\">,<\/span> <span class=\"p\">(<\/span><span class=\"n\">tempo<\/span> <span class=\"o\">&gt;&gt;<\/span> <span class=\"mi\">8<\/span><span class=\"p\">)<\/span> <span class=\"k\">as<\/span> <span class=\"nb\">u8<\/span><span class=\"p\">,<\/span> <span class=\"n\">tempo<\/span> <span class=\"k\">as<\/span> <span class=\"nb\">u8<\/span><span class=\"p\">]<\/span><span class=\"nf\">.to_vec<\/span><span class=\"p\">(),<\/span>\r\n    <span class=\"p\">});<\/span>\r\n    <span class=\"n\">test_messages<\/span><span class=\"nf\">.push<\/span><span class=\"p\">(<\/span><span class=\"nn\">Message<\/span><span class=\"p\">::<\/span><span class=\"n\">MetaEvent<\/span> <span class=\"p\">{<\/span>\r\n        <span class=\"n\">delta_time<\/span><span class=\"p\">:<\/span> <span class=\"mi\">0<\/span><span class=\"p\">,<\/span>\r\n        <span class=\"n\">event<\/span><span class=\"p\">:<\/span> <span class=\"nn\">MetaEvent<\/span><span class=\"p\">::<\/span><span class=\"n\">EndOfTrack<\/span><span class=\"p\">,<\/span>\r\n        <span class=\"n\">data<\/span><span class=\"p\">:<\/span> <span class=\"nn\">Vec<\/span><span class=\"p\">::<\/span><span class=\"nf\">new<\/span><span class=\"p\">(),<\/span>\r\n    <span class=\"p\">});<\/span>\r\n    <span class=\"n\">test_messages<\/span><span class=\"nf\">.push<\/span><span class=\"p\">(<\/span><span class=\"nn\">Message<\/span><span class=\"p\">::<\/span><span class=\"n\">TrackChange<\/span><span class=\"p\">);<\/span>\r\n    <span class=\"c\">\/\/ \u4e2d\u7565<\/span>\r\n    <span class=\"n\">test_messages<\/span>\r\n<span class=\"p\">}<\/span>\r\n<\/code><\/pre>\n<p>\u305d\u3057\u3066\u3001\u30e1\u30bd\u30c3\u30c9\u7b49\u306e\u5148\u982d\u306b\u8a18\u8ff0\u3059\u308b\u30c9\u30ad\u30e5\u30e1\u30f3\u30c8\u306b\u3082\u30c6\u30b9\u30c8\u3092\u66f8\u304f\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u4ee5\u4e0b\u306e\u30c9\u30ad\u30e5\u30e1\u30f3\u30c8\u3001\u30c6\u30b9\u30c8\u53ca\u3073\u30b3\u30fc\u30c9\u306f\u3001src\/reader.rs\u306b\u8a18\u8ff0\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"c\">\/\/\/ Parses SMF messages and fires(broadcasts) handlers.<\/span>\r\n<span class=\"c\">\/\/\/<\/span>\r\n<span class=\"c\">\/\/\/ # Examples<\/span>\r\n<span class=\"c\">\/\/\/<\/span>\r\n<span class=\"c\">\/\/\/ ```<\/span>\r\n<span class=\"c\">\/\/\/ use ghakuf::messages::*;<\/span>\r\n<span class=\"c\">\/\/\/ use ghakuf::reader::*;<\/span>\r\n<span class=\"c\">\/\/\/<\/span>\r\n<span class=\"c\">\/\/\/ let mut reader = Reader::new(<\/span>\r\n<span class=\"c\">\/\/\/     Box::new(HogeHandler {}),<\/span>\r\n<span class=\"c\">\/\/\/     \"tests\/test.mid\",<\/span>\r\n<span class=\"c\">\/\/\/ ).unwrap();<\/span>\r\n<span class=\"c\">\/\/\/ let _ = reader.read();<\/span>\r\n<span class=\"c\">\/\/\/<\/span>\r\n<span class=\"c\">\/\/\/ struct HogeHandler {}<\/span>\r\n<span class=\"c\">\/\/\/ impl Handler for HogeHandler {<\/span>\r\n<span class=\"c\">\/\/\/     \/\/ \u4e2d\u7565<\/span>\r\n<span class=\"c\">\/\/\/ }<\/span>\r\n<span class=\"c\">\/\/\/ ```<\/span>\r\n<span class=\"k\">pub<\/span> <span class=\"k\">fn<\/span> <span class=\"nf\">read<\/span><span class=\"p\">(<\/span><span class=\"o\">&amp;<\/span><span class=\"k\">mut<\/span> <span class=\"k\">self<\/span><span class=\"p\">)<\/span> <span class=\"k\">-&gt;<\/span> <span class=\"n\">Result<\/span><span class=\"o\">&lt;<\/span><span class=\"p\">(),<\/span> <span class=\"n\">ReadError<\/span><span class=\"o\">&gt;<\/span> <span class=\"p\">{<\/span>\r\n    <span class=\"c\">\/\/ \u4e2d\u7565<\/span>\r\n<span class=\"p\">}<\/span>\r\n<\/code><\/pre>\n<p>\u4eca\u56de\u8a18\u8ff0\u3057\u305f\u30c6\u30b9\u30c8\u306f\u30b3\u30fc\u30c9\u30ab\u30d0\u30ec\u30c3\u30b8\u3092\u8003\u616e\u3057\u3066\u3044\u307e\u305b\u3093\u304c\u3001\u91cd\u8981\u306a\u90e8\u5206\u306e\u52d5\u4f5c\u78ba\u8a8d\u306f\u306a\u3093\u3068\u306a\u304f\u5927\u4f53\u305d\u308c\u306a\u308a\u306b\u884c\u3063\u3066\u3044\u307e\u3059\u3002<\/p>\n<h2>\u300c\uff1f\u300d\u300c\uff01\u300d<\/h2>\n<p>\u305d\u308c\u3067\u306f\u3001\u30e9\u30a4\u30d6\u30e9\u30ea\u304c\u5b8c\u6210\u3057\u305f\u306e\u3067\u5168\u4e16\u754c\u306b\u751f\u304d\u6065\u3092\u3055\u3089\u3057\u307e\u3057\u3087\u3046\u3002\u4eca\u56de\u306f\u3001\u30d0\u30fc\u30b8\u30e7\u30f3\u7ba1\u7406\u3092Git\u3067\u884c\u3063\u305f\u4e0a\u3067\u3001\u30b3\u30fc\u30c9\u3092GitHub\u3067\u516c\u958b\u3057\u3066\u3044\u307e\u3059\u3002Git\u30fbGitHub\u306e\u6982\u8981\u3084\u4f7f\u3044\u65b9\u306f\u3001\u4ee5\u4e0b\u306e\u30b5\u30a4\u30c8\u304c\u308f\u304b\u308a\u3084\u3059\u304f\u3066\u30aa\u30b9\u30b9\u30e1\u3067\u3059\u3002<\/p>\n<ul class=\"post-ul\">ay3\u6c0f\u300cGitHub \u5165\u9580\u300d\uff08Qiita\u8a18\u4e8b\u30012016\u5e74\uff19\u6708\uff09<\/ul>\n<p>GitHub\u3067\u306e\u516c\u958b\u6642\u306f\u3001\u30ec\u30dd\u30b8\u30c8\u30ea\u306bREADME.md\u3092\u7528\u610f\u3057\u3066\u4f7f\u7528\u4f8b\u7b49\u3092\u66f8\u3044\u3066\u304a\u304f\u3068\u3001\u30c8\u30c3\u30d7\u306b\u8868\u793a\u3055\u308c\u3066\u683c\u597d\u826f\u3044\u304b\u3082\u3057\u308c\u307e\u305b\u3093\u3002\u30e9\u30a4\u30bb\u30f3\u30b9\u3092\u8a18\u8ff0\u3057\u305f\u30d5\u30a1\u30a4\u30eb\u3082\u5fd8\u308c\u305a\u306b\u3054\u7528\u610f\u3092\u3002<\/p>\n<div><img decoding=\"async\" class=\"post-images\" title=\"\" src=\"https:\/\/cdn.silicloud.com\/blog-img\/blog\/img\/657d600e37434c4406cf9ba8\/63-0.png\" alt=\"github.png\" \/><\/div>\n<p>\u307e\u305f\u3001Cargo\u306b\u306fRust\u306e\u30b3\u30e1\u30f3\u30c8\u304b\u3089\u30c9\u30ad\u30e5\u30e1\u30f3\u30c8\u3092\u4f5c\u6210\u3059\u308b\u3001Javadoc\u985e\u4f3c\u306e\u6a5f\u80fd\u304c\u5099\u308f\u3063\u3066\u3044\u307e\u3059\u3002\u8907\u96d1\u306a\u30eb\u30fc\u30eb\u304c\u3042\u308b\u308f\u3051\u3067\u306f\u306a\u3044\u305f\u3081\u3001\u4ee5\u4e0b\u306e\u30b5\u30a4\u30c8\u3092\u53c2\u8003\u306b\u3001\u7c21\u5358\u306b\u4f5c\u6210\u3057\u3066\u307f\u307e\u3057\u305f\u3002<\/p>\n<ul class=\"post-ul\">Jeremiah Peschka\u6c0f\u300cWriting Documentation in Rust\u300d\uff08\u500b\u4eba\u30d6\u30ed\u30b0\u30012016\u5e74\uff15\u6708\uff09<\/ul>\n<p>\u3053\u306e\u30c9\u30ad\u30e5\u30e1\u30f3\u30c8\u306f\u3001\u5f8c\u8ff0\u3059\u308bcrates.io\u3078\u306e\u767b\u9332\u6642\u306bdocs.rs\u3067\u516c\u958b\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n<div><img decoding=\"async\" class=\"post-images\" title=\"\" src=\"https:\/\/cdn.silicloud.com\/blog-img\/blog\/img\/657d600e37434c4406cf9ba8\/67-0.png\" alt=\"doc_rs.png\" \/><\/div>\n<p>\u4f5c\u6210\u3057\u305f\u30e9\u30a4\u30d6\u30e9\u30ea\u306f\u3001crates.io\u306b\u767b\u9332\u3059\u308c\u3070\u3001\u4ed6\u306e\u4eba\u304c\u7c21\u5358\u306b\u4f7f\u3048\u308b\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002\u767b\u9332\u65b9\u6cd5\u306f\u4ee5\u4e0b\u3092\u53c2\u7167\u3002<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">\u300cPublishing on crates.io\u300d\uff08Cargo\u516c\u5f0f\u30b5\u30a4\u30c8\uff09<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">\u03baeen\u6c0f\u300cRust\u306e\u30d1\u30c3\u30b1\u30fc\u30b8\u3092crates.io\u306b\u767b\u9332\u3059\u308b\u300d\uff08\u500b\u4eba\u30d6\u30ed\u30b0\u30012016\u5e74\uff11\u6708\uff09<\/ul>\n<div><img decoding=\"async\" class=\"post-images\" title=\"\" src=\"https:\/\/cdn.silicloud.com\/blog-img\/blog\/img\/657d600e37434c4406cf9ba8\/70-0.png\" alt=\"cargo.png\" \/><\/div>\n<h2>Eppur ci muove!<\/h2>\n<p>\u3068\u3053\u308d\u3067\u3001GitHub\u3084crate.io\u3067\u300cbuild passing\u300d\u3068\u3044\u3046\u30d0\u30c3\u30c2\u3092\u898b\u304b\u3051\u305f\u3053\u3068\u306f\u3042\u308a\u307e\u305b\u3093\u304b\uff1f\u3042\u308c\u306f\u3001\u7d99\u7d9a\u7684\u30a4\u30f3\u30c6\u30b0\u30ec\u30fc\u30b7\u30e7\u30f3\u306e\u30c6\u30b9\u30c8\u7d50\u679c\u3092\u8868\u793a\u3059\u308b\u3082\u306e\u3067\u3059\u3002\u4eca\u56de\u306f\u3001GitHub\u3068\u9023\u643a\u3057\u3066\u3001Linux\u74b0\u5883\u3068Mac\u74b0\u5883\u3067\u306e\u30c6\u30b9\u30c8\u3092\u884c\u3048\u308bTravis CI\u3068\u3001Window\u74b0\u5883\u3067\u306e\u30c6\u30b9\u30c8\u3092\u884c\u3048\u308bAppVeyor\u3092\u8a66\u3057\u307e\u3057\u305f\u3002<\/p>\n<p>Travis CI\u306f\u3001\u5f53\u8a72\u30b5\u30a4\u30c8\u4e0a\u3067GitHub\u3068\u9023\u643a\u3055\u305b\u305f\u4e0a\u3067\u3001\u30ec\u30dd\u30b8\u30c8\u30ea\u306b.travis.yaml\u3092\u914d\u7f6e\u3059\u308b\u3053\u3068\u3067\u30aa\u30f3\u30e9\u30a4\u30f3\u30c6\u30b9\u30c8\u3092\u884c\u3048\u307e\u3059\u3002.travis.yaml\u306f\u4ee5\u4e0b\u306e\u30b5\u30a4\u30c8\u3092\u53c2\u8003\u306b\u8a2d\u5b9a\u3057\u307e\u3057\u305f\u3002<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">\u677e\u5cf6\u6d69\u9053\u6c0f\u300cGitHub\u3068\u9023\u643a\u3067\u304d\u308b\u7d99\u7d9a\u7684\u30a4\u30f3\u30c6\u30b0\u30ec\u30fc\u30b7\u30e7\u30f3\u30c4\u30fc\u30eb\u300cTravis CI\u300d\u5165\u9580\u300d\uff08\u3055\u304f\u3089\u306e\u30ca\u30ec\u30c3\u30b8\u8a18\u4e8b\u30012016\u5e74\uff12\u6708\uff09<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">nozaq\u6c0f\u300cRust\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u306eCI\u8a2d\u5b9a &#8211; \u30c6\u30b9\u30c8\u5b9f\u884c\u304b\u3089\u30ab\u30d0\u30ec\u30c3\u30b8\u8a08\u6e2c\u307e\u3067\u300d(Qiita\u8a18\u4e8b\u30012017\u5e74\uff13\u6708)<\/ul>\n<div><img decoding=\"async\" class=\"post-images\" title=\"\" src=\"https:\/\/cdn.silicloud.com\/blog-img\/blog\/img\/657d600e37434c4406cf9ba8\/75-0.png\" alt=\"travis_ci.png\" \/><\/div>\n<p>AppVeyor\u3082\u3001\u5f53\u8a72\u30b5\u30a4\u30c8\u4e0a\u3067GitHub\u3068\u9023\u643a\u3055\u305b\u305f\u4e0a\u3067\u3001\u30ec\u30dd\u30b8\u30c8\u30ea\u306bappveyor.yml\u3092\u4f5c\u6210\u3059\u308b\u3053\u3068\u3067\u30aa\u30f3\u30e9\u30a4\u30f3\u30c6\u30b9\u30c8\u3092\u884c\u3048\u307e\u3059\u3002appveyor.yaml\u306f\u4ee5\u4e0b\u306e\u30b5\u30a4\u30c8\u3092\u53c2\u8003\u306b\u8a2d\u5b9a\u3057\u307e\u3057\u305f\u3002<\/p>\n<ul class=\"post-ul\">\u03baeen\u6c0f\u300ctravis\u3068appveyor\u3067\u30af\u30ed\u30b9\u30d7\u30e9\u30c3\u30c8\u30d5\u30a9\u30fc\u30e0\u306aCI\u3059\u308b\u8a71\u300d\uff08\u500b\u4eba\u30d6\u30ed\u30b0\u30012015\u5e7412\u6708\uff09<\/ul>\n<div><img decoding=\"async\" class=\"post-images\" title=\"\" src=\"https:\/\/cdn.silicloud.com\/blog-img\/blog\/img\/657d600e37434c4406cf9ba8\/78-0.png\" alt=\"appveyor.png\" 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