{"id":184,"date":"2008-05-31T23:40:04","date_gmt":"2008-05-31T15:40:04","guid":{"rendered":"http:\/\/www.xujiwei.com\/blog\/?p=184"},"modified":"2010-01-29T20:58:38","modified_gmt":"2010-01-29T12:58:38","slug":"judging-file-encoding-in-jscript-with-adodb-stream","status":"publish","type":"post","link":"https:\/\/xujiwei.com\/blog\/2008\/05\/judging-file-encoding-in-jscript-with-adodb-stream\/","title":{"rendered":"\u5728JScript\u4e2d\u4f7f\u7528ADODB.Stream\u5224\u65ad\u6587\u4ef6\u7f16\u7801"},"content":{"rendered":"<p>\u5728\u5b9e\u73b0TextStraem\u7684\u65f6\u5019\uff0c\u627e\u5230\u5224\u65ad\u6587\u4ef6\u7f16\u7801\u7684\u4ee3\u7801\u662fVBS\u7684\uff0c\u4f46\u662f\u5728JScript\u4e2d\u662f\u6ca1\u6709ASC\u7b49\u51fd\u6570\u7684\uff0c\u4e5f\u4e0d\u80fd\u5bf9\u4e8c\u8fdb\u5236\u6570\u636e\u8fdb\u884c\u5904\u7406\uff0c\u56e0\u6b64\u9700\u8981\u901a\u8fc7\u4e00\u4e2a\u7279\u522b\u7684\u65b9\u6cd5\u6765\u83b7\u53d6\u6587\u4ef6\u5f00\u5173\u7684\u7f16\u7801\u6807\u8bc6\u3002<\/p>\n<p>\u4e00\u5f00\u59cb\u4f7f\u7528ASCII\u7f16\u7801\u6765\u8bfb\u53d6\u6587\u672c\u6570\u636e\uff0c\u6a21\u62df\u8bfb\u53d6\u4e8c\u8fdb\u5236\u6570\u636e\uff0c\u4f46\u662f\u53d1\u73b0\u5982\u679c\u5b57\u7b26\u7f16\u7801\u5927\u4e8e127\u65f6\uff0c\u53ea\u4f1a\u5f97\u5230\u5c0f\u4e8e128\u7684\u503c\uff0c\u76f8\u5f53\u4e8e\u548c128\u53d6\u4f59\u4e86\uff0c\u56e0\u6b64ASCII\u7f16\u7801\u662f\u4e0d\u884c\u7684\u3002<\/p>\n<p>\u7ee7\u7eed\u5bfb\u627e\uff0c\u5728<a rel=\"external\" href=\"http:\/\/www.codeproject.com\/\">CodeProejct.com<\/a>\u627e\u5230\u4e00\u7bc7\u6587\u7ae0<a rel=\"external\" href=\"http:\/\/www.codeproject.com\/KB\/scripting\/Exsead7.aspx\">\u300aReading\u00a0And\u00a0Writing\u00a0Binary\u00a0Files\u00a0Using\u00a0JScript\u300b<\/a>\uff0c\u91cc\u9762\u521a\u597d\u6709\u6211\u9700\u8981\u7684\u5185\u5bb9\u3002<\/p>\n<p>\u5176\u5b9e\u8bf4\u6765\u4e5f\u7b80\u5355\uff0c\u5c31\u662f\u628a\u7f16\u7801\u6362\u4e00\u4e0b\uff0c\u4f7f\u7528437\uff0c\u8fd9\u4e2a\u662fIBM\u6269\u5c55\u8fc7\u7684ASCII\u7f16\u7801\uff0c\u628aASCII\u7f16\u7801\u7684\u6700\u9ad8\u4f4d\u4e5f\u5229\u7528\u8d77\u6765\uff0c\u5c06\u5b57\u7b26\u96c6\u4e2d\u7684\u5b57\u7b26\u4ece128\u4e2a\u6269\u5c55\u5230256\u4e2a\uff0c\u800c\u4f7f\u7528\u8fd9\u4e2a\u5b57\u7b26\u96c6\u8bfb\u53d6\u7684\u5b57\u7b26\u6570\u636e\u5c31\u76f8\u5f53\u4e8e\u539f\u59cb\u4e8c\u8fdb\u5236\u6570\u636e\u4e86\u3002<\/p>\n<p>\u89e3\u51b3\u4e86\u969c\u788d\u540e\uff0c\u5c31\u8981\u5f00\u59cb\u8bc6\u522b\u6587\u4ef6\u7684\u7f16\u7801\u4e86\uff0c\u901a\u8fc7\u4f7f\u7528ADODB.Stream\u5bf9\u8c61\u6765\u8bfb\u53d6\u6587\u4ef6\u7684\u5f00\u59cb\u4e24\u4e2a\u5b57\u8282\uff0c\u7136\u540e\u6839\u636e\u8fd9\u4e24\u4e2a\u5b57\u8282\u5c31\u53ef\u4ee5\u5224\u65ad\u6587\u4ef6\u7f16\u7801\u662f\u4ec0\u4e48\u4e86\u3002<\/p>\n<p>UTF-8\u6587\u4ef6\u5982\u679c\u5e26BOM\u7684\u8bdd\uff0c\u90a3\u4e48\u5934\u4e24\u4e2a\u5b57\u8282\u5c31\u662f0xEF\u30010xBB\uff0c\u518d\u4f8b\u5982Unicode\u6587\u4ef6\u7684\u5f00\u59cb\u4e24\u4e2a\u5b57\u8282\u662f0xFF\u30010xFE\uff0c\u8fd9\u4e9b\u5c31\u662f\u5224\u65ad\u6587\u4ef6\u7f16\u7801\u7684\u4f9d\u636e\u3002<\/p>\n<p>\u9700\u8981\u6ce8\u610f\u7684\u662f\uff0c\u5728ADODB.Stream\u8bfb\u53d6\u5b57\u7b26\u65f6\uff0c\u5e76\u4e0d\u662f\u4e00\u4e00\u5bf9\u5e94\u7684\uff0c\u4e5f\u5c31\u662f\u8bf4\uff0c\u5982\u679c\u4e8c\u8fdb\u5236\u6570\u636e\u662f0xEF\uff0c\u8bfb\u53d6\u51fa\u6765\u7684\u5b57\u7b26\u7ecf\u8fc7charCodeAt\u4e4b\u540e\uff0c\u5e76\u4e0d\u662f0xFE\uff0c\u800c\u662f\u53e6\u5916\u7684\u503c\uff0c\u8fd9\u4e2a\u5bf9\u5e94\u8868\u53ef\u4ee5\u5728\u4e0a\u9762\u63d0\u5230\u7684\u6587\u7ae0\u91cc\u67e5\u5230\u3002<\/p>\n<div class=\"codeHead\">\u7a0b\u5e8f\u4ee3\u7801\uff1a<a href=\"javascript:CopyText($('CODE_8061'));\">[ \u590d\u5236\u4ee3\u7801\u5230\u526a\u8d34\u677f ]<\/a><\/div>\n<div id=\"CODE_8061\" class=\"codeMain\">\n<ul>\n<li>function\u00a0CheckEncoding(filename)\u00a0{<\/li>\n<li> var\u00a0stream\u00a0=\u00a0new\u00a0ActiveXObject(\"ADODB.Stream\");<\/li>\n<li> stream.Mode\u00a0=\u00a03;<\/li>\n<li> stream.Type\u00a0=\u00a02;<\/li>\n<li> stream.Open();<\/li>\n<li> stream.Charset\u00a0=\u00a0\"437\";<\/li>\n<li> stream.LoadFromFile(filename);<\/li>\n<li> var\u00a0bom\u00a0=\u00a0escape(stream.ReadText(2));<\/li>\n<li> switch(bom)\u00a0{<\/li>\n<li> \/\/\u00a00xEF,0xBB\u00a0=&gt;\u00a0UTF-8<\/li>\n<li> case\u00a0\"%u2229%u2557\":<\/li>\n<li> encoding\u00a0=\u00a0\"UTF-8\";<\/li>\n<li> break;<\/li>\n<li> \/\/\u00a00xFF,0xFE\u00a0=&gt;\u00a0Unicode<\/li>\n<li> case\u00a0\"%A0%u25A0\":<\/li>\n<li> \/\/\u00a00xFE,0xFF\u00a0=&gt;\u00a0Unicode\u00a0big\u00a0endian<\/li>\n<li> case\u00a0\"%u25A0%A0\":<\/li>\n<li> encoding\u00a0=\u00a0\"Unicode\";<\/li>\n<li> break;<\/li>\n<li> \/\/\u00a0\u5224\u65ad\u4e0d\u51fa\u6765\u5c31\u4f7f\u7528GBK\uff0c\u8fd9\u6837\u53ef\u4ee5\u5728\u5927\u591a\u6570\u60c5\u51b5\u4e0b\u6b63\u786e\u5904\u7406\u4e2d\u6587<\/li>\n<li> default:<\/li>\n<li> encoding\u00a0=\u00a0\"GBK\";<\/li>\n<li> break;<\/li>\n<li> }<\/li>\n<li> stream.Close();<\/li>\n<li> delete\u00a0stream;<\/li>\n<li> stream\u00a0=\u00a0null;<\/li>\n<li> return\u00a0encoding;<\/li>\n<li>}<\/li>\n<\/ul>\n<\/div>\n<p>\u8fd9\u6837\uff0c\u5728\u9700\u8981\u7684\u65f6\u5019\uff0c\u901a\u8fc7\u8c03\u7528CheckEncoding\u51fd\u6570\u5c31\u53ef\u4ee5\u83b7\u53d6\u6587\u4ef6\u7684\u7f16\u7801\u4e86\u3002<\/p>\n<p>\u5e0c\u671b\u6b64\u6587\u5bf9\u4f60\u6709\u6240\u5e2e\u52a9\u3002<\/p>\n<p>xujiwei<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5728\u5b9e\u73b0TextStraem\u7684\u65f6\u5019\uff0c\u627e\u5230\u5224\u65ad\u6587\u4ef6\u7f16\u7801\u7684\u4ee3\u7801\u662fVBS\u7684\uff0c\u4f46\u662f\u5728JSc &hellip;<\/p>\n<p class=\"read-more\"><a href=\"https:\/\/xujiwei.com\/blog\/2008\/05\/judging-file-encoding-in-jscript-with-adodb-stream\/\">\u7ee7\u7eed\u9605\u8bfb &raquo;<\/a><\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[11],"tags":[110,31,109],"_links":{"self":[{"href":"https:\/\/xujiwei.com\/blog\/wp-json\/wp\/v2\/posts\/184"}],"collection":[{"href":"https:\/\/xujiwei.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/xujiwei.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/xujiwei.com\/blog\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/xujiwei.com\/blog\/wp-json\/wp\/v2\/comments?post=184"}],"version-history":[{"count":0,"href":"https:\/\/xujiwei.com\/blog\/wp-json\/wp\/v2\/posts\/184\/revisions"}],"wp:attachment":[{"href":"https:\/\/xujiwei.com\/blog\/wp-json\/wp\/v2\/media?parent=184"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/xujiwei.com\/blog\/wp-json\/wp\/v2\/categories?post=184"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/xujiwei.com\/blog\/wp-json\/wp\/v2\/tags?post=184"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}