lix-website/themes/lix/assets/bootstrap/node_modules/buffer-indexof-polyfill/index.js

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2024-04-27 03:39:10 +00:00
"use strict";
var initBuffer = require("./init-buffer");
if (!Buffer.prototype.indexOf) {
Buffer.prototype.indexOf = function (value, offset) {
offset = offset || 0;
// Always wrap the input as a Buffer so that this method will support any
// data type such as array octet, string or buffer.
if (typeof value === "string" || value instanceof String) {
value = initBuffer(value);
} else if (typeof value === "number" || value instanceof Number) {
value = initBuffer([ value ]);
}
var len = value.length;
for (var i = offset; i <= this.length - len; i++) {
var mismatch = false;
for (var j = 0; j < len; j++) {
if (this[i + j] != value[j]) {
mismatch = true;
break;
}
}
if (!mismatch) {
return i;
}
}
return -1;
};
}
function bufferLastIndexOf (value, offset) {
// Always wrap the input as a Buffer so that this method will support any
// data type such as array octet, string or buffer.
if (typeof value === "string" || value instanceof String) {
value = initBuffer(value);
} else if (typeof value === "number" || value instanceof Number) {
value = initBuffer([ value ]);
}
var len = value.length;
offset = offset || this.length - len;
for (var i = offset; i >= 0; i--) {
var mismatch = false;
for (var j = 0; j < len; j++) {
if (this[i + j] != value[j]) {
mismatch = true;
break;
}
}
if (!mismatch) {
return i;
}
}
return -1;
}
if (Buffer.prototype.lastIndexOf) {
// check Buffer#lastIndexOf is usable: https://github.com/nodejs/node/issues/4604
if (initBuffer("ABC").lastIndexOf ("ABC") === -1)
Buffer.prototype.lastIndexOf = bufferLastIndexOf;
} else {
Buffer.prototype.lastIndexOf = bufferLastIndexOf;
}