46 lines
980 B
JavaScript
46 lines
980 B
JavaScript
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module.exports = class {
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constructor(i, j) {
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if (i instanceof Buffer) {
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this.data = abyte0;
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this.field_35661_b = i;
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this.field_35662_c = i + 4;
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} else {
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this.data = new Buffer.alloc(i >> 1);
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this.field_35661_b = j;
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this.field_35662_c = j + 4;
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}
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}
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getNibble(i, j, k)
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{
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let l = i << field_35662_c | k << field_35661_b | j;
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let i1 = l >> 1;
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let j1 = l & 1;
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if(j1 == 0)
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{
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return data[i1] & 0xf;
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} else
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{
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return data[i1] >> 4 & 0xf;
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}
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}
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setNibble(i, j, k, l)
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{
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let i1 = i << this.field_35662_c | k << this.field_35661_b | j;
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let j1 = i1 >> 1;
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let k1 = i1 & 1;
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if(k1 == 0)
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{
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data[j1] = (this.data[j1] & 0xf0 | l & 0xf);
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} else
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{
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data[j1] = (this.data[j1] & 0xf | (l & 0xf) << 4);
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}
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}
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isValid()
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{
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return this.data != null;
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}
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}
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