hexToEbcdic.js

 /*
 * A conversion of the hex2ebcdic.js conversion utility. The original
 * exported a function that used a big switch statement. Now it is
 * a hash table that will be used by a single `encode` function.
 * 
 * Author: Luke Albao <[email protected]>
 * Copyright: First Performance Corporation
 */
 
 // To run this from the command line:
 // $ node hexToEbcdic.js <paste hex string here>

function hexToEbcdic (data) {
    var str = '';
    for (var b = 0, l = data.length; b < l; b++) {
        str += hexToEbcdicLookup[data[b]]
            || String.fromCharCode(data[b]);
    }
    return str;
}
var hexToEbcdicLookup = {
    0: "<NUL>",
    1: "<SOH>",
    2: "<STX>",
    3: "<ETX>",
    4: "<SEL>",
    5: "<HT>",
    6: "<RNL>",
    7: "<DEL>",
    8: "<GE>",
    9: "<SPS>",
    10: "<RPT>",
    11: "<VT>",
    12: "<FF>",
    13: "chr(13)",
    14: "<SO>",
    15: "<SI>",
    16: "<DLE>",
    17: "<DC1>",
    18: "<DC2>",
    19: "<DC3>",
    20: "<RES/ENP>",
    21: "<NL>",
    22: "<BS>",
    23: "<POC>",
    24: "<CAN>",
    25: "<EM>",
    26: "<UBS>",
    27: "<CU1>",
    28: "<IFS>",
    29: "<IGS>",
    30: "<IRS>",
    31: "<ITB/IUS>",
    32: "<DS>",
    33: "<SOS>",
    34: "<FS>",
    35: "<WUS>",
    36: "<BYP/INP>",
    37: "<LF>",
    38: "<ETB>",
    39: "<ESC>",
    40: "<SA>",
    41: "<SFE>",
    42: "<SM/SW>",
    43: "<CSP>",
    44: "<MFA>",
    45: "<ENQ>",
    46: "<ACK>",
    47: "<BEL>",
    48: null,
    49: null,
    50: "<SYN>",
    51: "<IR>",
    52: "<PP>",
    53: "<TRN>",
    54: "<NBS>",
    55: "<EOT>",
    56: "<SBS>",
    57: "<IT>",
    58: "<RFF>",
    59: "<CU3>",
    60: "<DC4>",
    61: "<NAK>",
    62: null,
    63: "<SUB>",
    64: " ",
    65: "<RSP>",
    66: null,
    67: null,
    68: null,
    69: null,
    70: null,
    71: null,
    72: null,
    73: null,
    74: "[",
    75: ".",
    76: "<",
    77: "(",
    78: "+",
    79: "!",
    80: "&",
    81: null,
    82: null,
    83: null,
    84: null,
    85: null,
    86: null,
    87: null,
    88: null,
    89: null,
    90: "]",
    91: "$",
    92: "*",
    93: ")",
    94: ";",
    95: "^",
    96: "_",
    97: "/",
    98: null,
    99: null,
    100: null,
    101: null,
    102: null,
    103: null,
    104: null,
    105: null,
    106: "|",
    107: ",",
    108: "%",
    109: "_",
    110: ">",
    111: "?",
    112: null,
    113: null,
    114: null,
    115: null,
    116: null,
    117: null,
    118: null,
    119: null,
    120: null,
    121: "`",
    122: ":",
    123: "#",
    124: "@",
    125: "'",
    126: "=",
    127: "\"",
    128: null,
    129: "a",
    130: "b",
    131: "c",
    132: "d",
    133: "e",
    134: "f",
    135: "g",
    136: "h",
    137: "i",
    138: null,
    139: "{",
    140: null,
    141: null,
    142: null,
    143: "+",
    144: null,
    145: "j",
    146: "k",
    147: "l",
    148: "m",
    149: "n",
    150: "o",
    151: "p",
    152: "q",
    153: "r",
    154: null,
    155: "}",
    156: null,
    157: null,
    158: null,
    159: null,
    160: null,
    161: "~",
    162: "s",
    163: "t",
    164: "u",
    165: "v",
    166: "w",
    167: "x",
    168: "y",
    169: "z",
    170: null,
    171: null,
    172: null,
    173: "[",
    174: null,
    175: null,
    176: null,
    177: null,
    178: null,
    179: null,
    180: null,
    181: null,
    182: null,
    183: null,
    184: null,
    185: null,
    186: null,
    187: null,
    188: null,
    189: null,
    190: null,
    191: null,
    192: "{",
    193: "A",
    194: "B",
    195: "C",
    196: "D",
    197: "E",
    198: "F",
    199: "G",
    200: "H",
    201: "I",
    202: null,
    203: null,
    204: null,
    205: null,
    206: null,
    207: null,
    208: "}",
    209: "J",
    210: "K",
    211: "L",
    212: "M",
    213: "N",
    214: "O",
    215: "P",
    216: "Q",
    217: "R",
    218: null,
    219: null,
    220: null,
    221: null,
    222: null,
    223: null,
    224: "\\",
    225: null,
    226: "S",
    227: "T",
    228: "U",
    229: "V",
    230: "W",
    231: "X",
    232: "Y",
    233: "Z",
    234: null,
    235: null,
    236: null,
    237: null,
    238: null,
    239: null,
    240: "0",
    241: "1",
    242: "2",
    243: "3",
    244: "4",
    245: "5",
    246: "6",
    247: "7",
    248: "8",
    249: "9",
    250: null,
    251: null,
    252: null,
    253: null,
    254: null,
    255: null
}

if (!module.parent) {
  var inputString = process.argv[2];
  var inputBuffer = new Buffer(inputString, 'hex');
  console.log(hexToEbcdic(inputBuffer));
}

module.exports = hexToEbcdic;