{"id":4801,"date":"2012-11-21T19:20:56","date_gmt":"2012-11-21T10:20:56","guid":{"rendered":"http:\/\/rentan.org\/blog\/?p=4801"},"modified":"2012-11-21T19:20:56","modified_gmt":"2012-11-21T10:20:56","slug":"dmonkey-stringbuffer-nul-search","status":"publish","type":"post","link":"https:\/\/rentan.org\/blog\/2012\/11\/21\/dmonkey-stringbuffer-nul-search\/","title":{"rendered":"DMonkey: StringBuffer \u306b\u304a\u3051\u308b NUL \u6587\u5b57\u306e\u691c\u7d22"},"content":{"rendered":"<p><code>StringBuffer.indexOf<\/code> \u306b\u304a\u3044\u3066\u3001<code>String.fromCharCode (0)<\/code> \u3067 NUL \u6587\u5b57\u3092\u691c\u7d22\u3059\u308b\u3053\u3068\u304c\u51fa\u6765\u307e\u3059\u3002<\/p>\n<div class=\"prog_code javascript\">\n<code>var sb = new StringBuffer ('abc');<br \/>\nsb [1] = 0;<\/p>\n<p>var s = String.fromCharCode (0);<br \/>\nalert (sb.indexOf (s)); &nbsp; \/\/ 1<\/p>\n<p>\/\/ \u3053\u308c\u3089\u306e\u65b9\u6cd5\u3067\u306f\u691c\u7d22\u3067\u304d\u306a\u3044<br \/>\nalert (sb.indexOf (0)); &nbsp; \/\/ -1<br \/>\nalert (sb.indexOf (\"\")); &nbsp; \/\/ -1<br \/>\nalert (sb.indexOf (\"\\x00\")); &nbsp; \/\/ -1<\/code>\n<\/div>\n<p>NUL \u306e\u5f8c\u308d\u306b\u6587\u5b57\u304c\u7d9a\u3044\u3066\u3044\u3066\u3082\u8003\u616e\u3055\u308c\u307e\u3059\u3002<\/p>\n<div class=\"prog_code javascript\">\n<code>var sb = new StringBuffer ('a*b*c');<br \/>\nsb [1] = sb [3] = 0;<\/p>\n<p>var s = String.fromCharCode (0) + 'c';<br \/>\nalert (sb.indexOf (s)); &nbsp; \/\/ 3<\/code>\n<\/div>\n<p>\u3061\u306a\u307f\u306b StringBuffer \u3092\u6587\u5b57\u5217\u3067\u521d\u671f\u5316\u3057\u305f\u5834\u5408\u3001\u30c7\u30fc\u30bf\u672b\u5c3e\u306b NUL \u6587\u5b57\u306f\u4ed8\u304d\u307e\u305b\u3093\u3002\u307e\u305f length \u3092\u5897\u3084\u3057\u305f\u5834\u5408\u306f 0 \u3067\u57cb\u3081\u3089\u308c\u307e\u3059\u3002<\/p>\n<div class=\"prog_code javascript\">\n<code>var sb = new StringBuffer ('abc');<br \/>\nvar s = String.fromCharCode (0);<\/p>\n<p>alert (sb.indexOf (s)); &nbsp; \/\/ -1<br \/>\n++sb.length;<br \/>\nalert (sb.indexOf (s)); &nbsp; \/\/ 3<\/code>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>StringBuffer.indexOf \u306b\u304a\u3044\u3066\u3001String.fromCharCode (0) \u3067 NUL \u6587\u5b57\u3092\u691c\u7d22\u3059\u308b\u3053\u3068\u304c\u51fa\u6765\u307e\u3059\u3002 var sb = new StringBuffer ('abc'); sb  [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[640],"tags":[1191],"class_list":["post-4801","post","type-post","status-publish","format-standard","hentry","category-irvine","tag-dmonkey"],"_links":{"self":[{"href":"https:\/\/rentan.org\/blog\/wp-json\/wp\/v2\/posts\/4801","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/rentan.org\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/rentan.org\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/rentan.org\/blog\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/rentan.org\/blog\/wp-json\/wp\/v2\/comments?post=4801"}],"version-history":[{"count":5,"href":"https:\/\/rentan.org\/blog\/wp-json\/wp\/v2\/posts\/4801\/revisions"}],"predecessor-version":[{"id":4806,"href":"https:\/\/rentan.org\/blog\/wp-json\/wp\/v2\/posts\/4801\/revisions\/4806"}],"wp:attachment":[{"href":"https:\/\/rentan.org\/blog\/wp-json\/wp\/v2\/media?parent=4801"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/rentan.org\/blog\/wp-json\/wp\/v2\/categories?post=4801"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/rentan.org\/blog\/wp-json\/wp\/v2\/tags?post=4801"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}