TADpole-Online/public/js/libs/crc32.js

/* crc32.js (C) 2014-present SheetJS -- http://sheetjs.com */
/* vim: set ts=2: */
/*exported CRC32 */
var CRC32;
(function (factory) {
  /*jshint ignore:start */
  /*eslint-disable */
  if (typeof DO_NOT_EXPORT_CRC === 'undefined') {
    if ('object' === typeof exports) {
      factory(exports);
    } else if ('function' === typeof define && define.amd) {
      define(function () {
        var module = {};
        factory(module);
        return module;
      });
    } else {
      factory(CRC32 = {});
    }
  } else {
    factory(CRC32 = {});
  }
  /*eslint-enable */
  /*jshint ignore:end */
}(function (CRC32) {
  CRC32.version = '1.2.0';
  /* see perf/crc32table.js */
  /*global Int32Array */
  function signed_crc_table() {
    var c = 0, table = new Array(256);

    for (var n = 0; n != 256; ++n) {
      c = n;
      c = ((c & 1) ? (-306674912 ^ (c >>> 1)) : (c >>> 1));
      c = ((c & 1) ? (-306674912 ^ (c >>> 1)) : (c >>> 1));
      c = ((c & 1) ? (-306674912 ^ (c >>> 1)) : (c >>> 1));
      c = ((c & 1) ? (-306674912 ^ (c >>> 1)) : (c >>> 1));
      c = ((c & 1) ? (-306674912 ^ (c >>> 1)) : (c >>> 1));
      c = ((c & 1) ? (-306674912 ^ (c >>> 1)) : (c >>> 1));
      c = ((c & 1) ? (-306674912 ^ (c >>> 1)) : (c >>> 1));
      c = ((c & 1) ? (-306674912 ^ (c >>> 1)) : (c >>> 1));
      table[n] = c;
    }

    return typeof Int32Array !== 'undefined' ? new Int32Array(table) : table;
  }

  var T = signed_crc_table();
  function crc32_bstr(bstr, seed) {
    var C = seed ^ -1, L = bstr.length - 1;
    for (var i = 0; i < L;) {
      C = (C >>> 8) ^ T[(C ^ bstr.charCodeAt(i++)) & 0xFF];
      C = (C >>> 8) ^ T[(C ^ bstr.charCodeAt(i++)) & 0xFF];
    }
    if (i === L) C = (C >>> 8) ^ T[(C ^ bstr.charCodeAt(i)) & 0xFF];
    return C ^ -1;
  }

  function crc32_buf(buf, seed) {
    if (buf.length > 10000) return crc32_buf_8(buf, seed);
    var C = seed ^ -1, L = buf.length - 3;
    for (var i = 0; i < L;) {
      C = (C >>> 8) ^ T[(C ^ buf[i++]) & 0xFF];
      C = (C >>> 8) ^ T[(C ^ buf[i++]) & 0xFF];
      C = (C >>> 8) ^ T[(C ^ buf[i++]) & 0xFF];
      C = (C >>> 8) ^ T[(C ^ buf[i++]) & 0xFF];
    }
    while (i < L + 3) C = (C >>> 8) ^ T[(C ^ buf[i++]) & 0xFF];
    return C ^ -1;
  }

  function crc32_buf_8(buf, seed) {
    var C = seed ^ -1, L = buf.length - 7;
    for (var i = 0; i < L;) {
      C = (C >>> 8) ^ T[(C ^ buf[i++]) & 0xFF];
      C = (C >>> 8) ^ T[(C ^ buf[i++]) & 0xFF];
      C = (C >>> 8) ^ T[(C ^ buf[i++]) & 0xFF];
      C = (C >>> 8) ^ T[(C ^ buf[i++]) & 0xFF];
      C = (C >>> 8) ^ T[(C ^ buf[i++]) & 0xFF];
      C = (C >>> 8) ^ T[(C ^ buf[i++]) & 0xFF];
      C = (C >>> 8) ^ T[(C ^ buf[i++]) & 0xFF];
      C = (C >>> 8) ^ T[(C ^ buf[i++]) & 0xFF];
    }
    while (i < L + 7) C = (C >>> 8) ^ T[(C ^ buf[i++]) & 0xFF];
    return C ^ -1;
  }

  function crc32_str(str, seed) {
    var C = seed ^ -1;
    for (var i = 0, L = str.length, c, d; i < L;) {
      c = str.charCodeAt(i++);
      if (c < 0x80) {
        C = (C >>> 8) ^ T[(C ^ c) & 0xFF];
      } else if (c < 0x800) {
        C = (C >>> 8) ^ T[(C ^ (192 | ((c >> 6) & 31))) & 0xFF];
        C = (C >>> 8) ^ T[(C ^ (128 | (c & 63))) & 0xFF];
      } else if (c >= 0xD800 && c < 0xE000) {
        c = (c & 1023) + 64; d = str.charCodeAt(i++) & 1023;
        C = (C >>> 8) ^ T[(C ^ (240 | ((c >> 8) & 7))) & 0xFF];
        C = (C >>> 8) ^ T[(C ^ (128 | ((c >> 2) & 63))) & 0xFF];
        C = (C >>> 8) ^ T[(C ^ (128 | ((d >> 6) & 15) | ((c & 3) << 4))) & 0xFF];
        C = (C >>> 8) ^ T[(C ^ (128 | (d & 63))) & 0xFF];
      } else {
        C = (C >>> 8) ^ T[(C ^ (224 | ((c >> 12) & 15))) & 0xFF];
        C = (C >>> 8) ^ T[(C ^ (128 | ((c >> 6) & 63))) & 0xFF];
        C = (C >>> 8) ^ T[(C ^ (128 | (c & 63))) & 0xFF];
      }
    }
    return C ^ -1;
  }
  CRC32.table = T;
  // $FlowIgnore
  CRC32.bstr = crc32_bstr;
  // $FlowIgnore
  CRC32.buf = crc32_buf;
  // $FlowIgnore
  CRC32.str = crc32_str;
}));