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Fix for undefined _.str.levenshtein function

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Michael Wiencek 2015-08-21 17:56:00 -05:00
parent 54e8047fb8
commit 1157876b46
1 changed files with 52 additions and 1 deletions
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53
batch-add-recording-relationships.user.js
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@ -16,6 +16,55 @@ document.body.appendChild(scr);
function batch_recording_rels() {
// 'leven' function taken from https://github.com/sindresorhus/leven
// Copyright (c) Sindre Sorhus <sindresorhus@gmail.com> (sindresorhus.com)
// Released under the MIT License:
// https://raw.githubusercontent.com/sindresorhus/leven/49baddd/license
function leven(a, b) {
if (a === b) {
return 0;
}
var aLen = a.length;
var bLen = b.length;
if (aLen === 0) {
return bLen;
}
if (bLen === 0) {
return aLen;
}
var bCharCode;
var ret;
var tmp;
var tmp2;
var i = 0;
var j = 0;
var arr = [];
var charCodeCache = [];
while (i < aLen) {
charCodeCache[i] = a.charCodeAt(i);
arr[i] = ++i;
}
while (j < bLen) {
bCharCode = b.charCodeAt(j);
tmp = j++;
ret = j;
for (i = 0; i < aLen; i++) {
tmp2 = bCharCode === charCodeCache[i] ? tmp : tmp + 1;
tmp = arr[i];
ret = arr[i] = tmp > ret ? tmp2 > ret ? ret + 1 : tmp2 : tmp2 > tmp ? tmp + 1 : tmp2;
}
}
return ret;
}
// HTML helpers
function make_element(el_name, args) {
@ -727,7 +776,9 @@ function batch_recording_rels() {
}
function sim(r, w) {
return r == w ? 0 : _.str.levenshtein(r, w) / ((r.length + w.length) / 2);
r = r || '';
w = w || '';
return r == w ? 0 : leven(r, w) / ((r.length + w.length) / 2);
}
var matches = {};