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[UI] Added quick String.hashCode function.

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This is needed in several places in the code where we need to compare if
two strings differ, but either the strings are too long (e.g. content of
large files) or we don't want to pass the original values (e.g.
credentials, session tokens etc.).
This commit is contained in:
Fabio Manganiello 2024-08-25 00:15:54 +02:00
parent 818f60a468
commit e6a358fe27
Signed by untrusted user: blacklight
GPG key ID: D90FBA7F76362774
1 changed files with 17 additions and 0 deletions
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17
platypush/backend/http/webapp/src/utils/Text.vue
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@ -1,4 +1,21 @@
<script>
// From https://stackoverflow.com/questions/7616461/generate-a-hash-from-string-in-javascript
String.prototype.hashCode = function(seed = 0) {
let h1 = 0xdeadbeef ^ seed, h2 = 0x41c6ce57 ^ seed;
for(let i = 0, ch; i < this.length; i++) {
ch = this.charCodeAt(i);
h1 = Math.imul(h1 ^ ch, 2654435761);
h2 = Math.imul(h2 ^ ch, 1597334677);
}
h1 = Math.imul(h1 ^ (h1 >>> 16), 2246822507);
h1 ^= Math.imul(h2 ^ (h2 >>> 13), 3266489909);
h2 = Math.imul(h2 ^ (h2 >>> 16), 2246822507);
h2 ^= Math.imul(h1 ^ (h1 >>> 13), 3266489909);
return 4294967296 * (2097151 & h2) + (h1 >>> 0);
};
export default {
name: "Text",
methods: {