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112 lines
3.1 KiB
112 lines
3.1 KiB
"use strict";
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function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }
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function _defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } }
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function _createClass(Constructor, protoProps, staticProps) { if (protoProps) _defineProperties(Constructor.prototype, protoProps); if (staticProps) _defineProperties(Constructor, staticProps); return Constructor; }
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// StringBuf - a way to keep string memory operations to a minimum
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// while building the strings for the xml files
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var StringBuf = /*#__PURE__*/function () {
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function StringBuf(options) {
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_classCallCheck(this, StringBuf);
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this._buf = Buffer.alloc(options && options.size || 16384);
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this._encoding = options && options.encoding || 'utf8'; // where in the buffer we are at
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this._inPos = 0; // for use by toBuffer()
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this._buffer = undefined;
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}
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_createClass(StringBuf, [{
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key: "toBuffer",
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value: function toBuffer() {
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// return the current data as a single enclosing buffer
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if (!this._buffer) {
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this._buffer = Buffer.alloc(this.length);
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this._buf.copy(this._buffer, 0, 0, this.length);
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}
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return this._buffer;
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}
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}, {
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key: "reset",
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value: function reset(position) {
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position = position || 0;
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this._buffer = undefined;
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this._inPos = position;
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}
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}, {
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key: "_grow",
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value: function _grow(min) {
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var size = this._buf.length * 2;
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while (size < min) {
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size *= 2;
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}
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var buf = Buffer.alloc(size);
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this._buf.copy(buf, 0);
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this._buf = buf;
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}
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}, {
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key: "addText",
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value: function addText(text) {
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this._buffer = undefined;
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var inPos = this._inPos + this._buf.write(text, this._inPos, this._encoding); // if we've hit (or nearing capacity), grow the buf
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while (inPos >= this._buf.length - 4) {
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this._grow(this._inPos + text.length); // keep trying to write until we've completely written the text
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inPos = this._inPos + this._buf.write(text, this._inPos, this._encoding);
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}
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this._inPos = inPos;
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}
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}, {
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key: "addStringBuf",
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value: function addStringBuf(inBuf) {
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if (inBuf.length) {
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this._buffer = undefined;
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if (this.length + inBuf.length > this.capacity) {
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this._grow(this.length + inBuf.length);
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} // eslint-disable-next-line no-underscore-dangle
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inBuf._buf.copy(this._buf, this._inPos, 0, inBuf.length);
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this._inPos += inBuf.length;
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}
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}
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}, {
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key: "length",
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get: function get() {
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return this._inPos;
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}
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}, {
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key: "capacity",
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get: function get() {
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return this._buf.length;
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}
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}, {
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key: "buffer",
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get: function get() {
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return this._buf;
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}
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}]);
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return StringBuf;
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}();
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module.exports = StringBuf;
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//# sourceMappingURL=string-buf.js.map
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