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49 lines
1.4 KiB
49 lines
1.4 KiB
5 years ago
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"use strict";
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Object.defineProperty(exports, "__esModule", { value: true });
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const emptyBuffer = Buffer.allocUnsafe(0);
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class BufferReader {
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constructor(offset = 0) {
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this.offset = offset;
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this.buffer = emptyBuffer;
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// TODO(bmc): support non-utf8 encoding?
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this.encoding = 'utf-8';
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}
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setBuffer(offset, buffer) {
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this.offset = offset;
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this.buffer = buffer;
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}
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int16() {
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const result = this.buffer.readInt16BE(this.offset);
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this.offset += 2;
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return result;
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}
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byte() {
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const result = this.buffer[this.offset];
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this.offset++;
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return result;
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}
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int32() {
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const result = this.buffer.readInt32BE(this.offset);
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this.offset += 4;
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return result;
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}
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string(length) {
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const result = this.buffer.toString(this.encoding, this.offset, this.offset + length);
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this.offset += length;
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return result;
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}
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cstring() {
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const start = this.offset;
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let end = start;
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while (this.buffer[end++] !== 0) { }
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this.offset = end;
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return this.buffer.toString(this.encoding, start, end - 1);
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}
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bytes(length) {
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const result = this.buffer.slice(this.offset, this.offset + length);
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this.offset += length;
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return result;
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}
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}
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exports.BufferReader = BufferReader;
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//# sourceMappingURL=buffer-reader.js.map
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