크롬에 파일 판독기가있는 PC8/CP437 문자 집합

Question

크롬에서 FileReader API를 사용하여 CP437 문자 집합으로 파일을 읽을 수 있는지 알고있는 사람은 누구입니까? 사용 가능한 인코딩을 나열 할 수있는 곳이 있습니까? 현재 해결 방법은 CP1251 reader.readAsText(file, 'CP1251')으로 읽고 수동으로 특수 문자를 교체하는 것입니다. 이 문자 집합을 지원하는 다른 브라우저가 있습니까? 또는 해결 방법에 대해 더 좋은 아이디어가 있습니까?

편집 : 파일이 브라우저에서만 구문 분석되며 사용할 수있는 백엔드가 없습니다.

오스카

Answer 1

나는 동일한 문제가있었습니다. CP437은 구현되지 않았습니다 (Chrome 및 Firefox 이상).

var Cp437Helper = function() { 
    var cp437map = [ 
     '\u0000', '\u0001', '\u0002', '\u0003', '\u0004', '\u0005', '\u0006', 
     '\u0007', '\u0008', '\u0009', '\u000A', '\u000B', '\u000C', '\u000D', 
     '\u000E', '\u000F', '\u0010', '\u0011', '\u0012', '\u0013', '\u0014', 
     '\u0015', '\u0016', '\u0017', '\u0018', '\u0019', '\u001A', '\u001B', 
     '\u001C', '\u001D', '\u001E', '\u001F', '\u0020', '\u0021', '\u0022', 
     '\u0023', '\u0024', '\u0025', '\u0026', '\u0027', '\u0028', '\u0029', 
     '\u002A', '\u002B', '\u002C', '\u002D', '\u002E', '\u002F', '\u0030', 
     '\u0031', '\u0032', '\u0033', '\u0034', '\u0035', '\u0036', '\u0037', 
     '\u0038', '\u0039', '\u003A', '\u003B', '\u003C', '\u003D', '\u003E', 
     '\u003F', '\u0040', '\u0041', '\u0042', '\u0043', '\u0044', '\u0045', 
     '\u0046', '\u0047', '\u0048', '\u0049', '\u004A', '\u004B', '\u004C', 
     '\u004D', '\u004E', '\u004F', '\u0050', '\u0051', '\u0052', '\u0053', 
     '\u0054', '\u0055', '\u0056', '\u0057', '\u0058', '\u0059', '\u005A', 
     '\u005B', '\u005C', '\u005D', '\u005E', '\u005F', '\u0060', '\u0061', 
     '\u0062', '\u0063', '\u0064', '\u0065', '\u0066', '\u0067', '\u0068', 
     '\u0069', '\u006A', '\u006B', '\u006C', '\u006D', '\u006E', '\u006F', 
     '\u0070', '\u0071', '\u0072', '\u0073', '\u0074', '\u0075', '\u0076', 
     '\u0077', '\u0078', '\u0079', '\u007A', '\u007B', '\u007C', '\u007D', 
     '\u007E', '\u007F', '\u00C7', '\u00FC', '\u00E9', '\u00E2', '\u00E4', 
     '\u00E0', '\u00E5', '\u00E7', '\u00EA', '\u00EB', '\u00E8', '\u00EF', 
     '\u00EE', '\u00EC', '\u00C4', '\u00C5', '\u00C9', '\u00E6', '\u00C6', 
     '\u00F4', '\u00F6', '\u00F2', '\u00FB', '\u00F9', '\u00FF', '\u00D6', 
     '\u00DC', '\u00A2', '\u00A3', '\u00A5', '\u20A7', '\u0192', '\u00E1', 
     '\u00ED', '\u00F3', '\u00FA', '\u00F1', '\u00D1', '\u00AA', '\u00BA', 
     '\u00BF', '\u2310', '\u00AC', '\u00BD', '\u00BC', '\u00A1', '\u00AB', 
     '\u00BB', '\u2591', '\u2592', '\u2593', '\u2502', '\u2524', '\u2561', 
     '\u2562', '\u2556', '\u2555', '\u2563', '\u2551', '\u2557', '\u255D', 
     '\u255C', '\u255B', '\u2510', '\u2514', '\u2534', '\u252C', '\u251C', 
     '\u2500', '\u253C', '\u255E', '\u255F', '\u255A', '\u2554', '\u2569', 
     '\u2566', '\u2560', '\u2550', '\u256C', '\u2567', '\u2568', '\u2564', 
     '\u2565', '\u2559', '\u2558', '\u2552', '\u2553', '\u256B', '\u256A', 
     '\u2518', '\u250C', '\u2588', '\u2584', '\u258C', '\u2590', '\u2580', 
     '\u03B1', '\u00DF', '\u0393', '\u03C0', '\u03A3', '\u03C3', '\u00B5', 
     '\u03C4', '\u03A6', '\u0398', '\u03A9', '\u03B4', '\u221E', '\u03C6', 
     '\u03B5', '\u2229', '\u2261', '\u00B1', '\u2265', '\u2264', '\u2320', 
     '\u2321', '\u00F7', '\u2248', '\u00B0', '\u2219', '\u00B7', '\u221A', 
     '\u207F', '\u00B2', '\u25A0', '\u00A0' 
    ]; 

    this.convertToUTF8 = function (buffer) { 
     var out = ''; 
     var view = new DataView(buffer); 

     var i ; 
     var n = view.byteLength; 
     for (i = 0; i < n; i ++) { 
      var uint = view.getUint8(i); 
      if (cp437map[ uint ] == undefined) { 
       out += '/' + uint + '/'; 
      } else { 
       out += cp437map[ uint ]; 
      } 
     } 
     return out; 
    }; 

    if (Cp437Helper.prototype._instance == undefined) { 
     Cp437Helper.prototype._instance = this; 
    } 
    return Cp437Helper.prototype._instance; 
}; 

를 사용하여 위의 : 브라우저에서 ArrayBuffer 지원을 필요로 UTF-8로 변환하는 주위

일

var getTextFromCP437File = function (file) { 
    var reader = new FileReader(); 
    reader.onload = function(e) { 
     var text = Cp437Helper().convertToUTF8(reader.result); 
     // do something... 
    }; 
    //reader.readAsText(file, 'cp437'); 
    reader.readAsArrayBuffer(file); 
};