59 lines
1.3 KiB
JavaScript
59 lines
1.3 KiB
JavaScript
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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