76 lines
2.0 KiB
JavaScript
76 lines
2.0 KiB
JavaScript
// Copyright (c) 2013-2014, Jeffrey Wilcke. All rights reserved.
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//
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// This library is free software; you can redistribute it and/or
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// modify it under the terms of the GNU General Public
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// License as published by the Free Software Foundation; either
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// version 2.1 of the License, or (at your option) any later version.
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//
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// This library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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// General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with this library; if not, write to the Free Software
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// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
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// MA 02110-1301 USA
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String.prototype.pad = function(l, r) {
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if (r === undefined) {
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r = l
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if (!(this.substr(0, 2) == "0x" || /^\d+$/.test(this)))
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l = 0
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}
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var ret = this.bin();
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while (ret.length < l)
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ret = "\0" + ret
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while (ret.length < r)
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ret = ret + "\0"
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return ret;
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}
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String.prototype.unpad = function() {
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var i = this.length;
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while (i && this[i - 1] == "\0")
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--i
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return this.substr(0, i)
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}
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String.prototype.bin = function() {
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if (this.substr(0, 2) == "0x") {
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bytes = []
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var i = 2;
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// Check if it's odd - pad with a zero if so.
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if (this.length % 2)
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bytes.push(parseInt(this.substr(i++, 1), 16))
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for (; i < this.length - 1; i += 2)
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bytes.push(parseInt(this.substr(i, 2), 16));
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return String.fromCharCode.apply(String, bytes);
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} else if (/^\d+$/.test(this))
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return bigInt(this.substr(0)).toHex().bin()
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// Otherwise we'll return the "String" object instead of an actual string
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return this.substr(0, this.length)
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}
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String.prototype.unbin = function() {
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var i, l, o = '';
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for(i = 0, l = this.length; i < l; i++) {
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var n = this.charCodeAt(i).toString(16);
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o += n.length < 2 ? '0' + n : n;
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}
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return "0x" + o;
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}
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String.prototype.dec = function() {
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return bigInt(this.substr(0)).toString()
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}
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String.prototype.hex = function() {
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return bigInt(this.substr(0)).toHex()
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}
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