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node_modules/@pdf-lib/standard-fonts/es/utils.js

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+/*
+ * The `chars`, `lookup`, and `decodeFromBase64` members of this file are
+ * licensed under the following:
+ *
+ *     base64-arraybuffer
+ *     https://github.com/niklasvh/base64-arraybuffer
+ *
+ *     Copyright (c) 2012 Niklas von Hertzen
+ *     Licensed under the MIT license.
+ *
+ */
+import pako from 'pako';
+var chars = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/';
+// Use a lookup table to find the index.
+var lookup = new Uint8Array(256);
+for (var i = 0; i < chars.length; i++) {
+    lookup[chars.charCodeAt(i)] = i;
+}
+export var decodeFromBase64 = function (base64) {
+    var bufferLength = base64.length * 0.75;
+    var len = base64.length;
+    var i;
+    var p = 0;
+    var encoded1;
+    var encoded2;
+    var encoded3;
+    var encoded4;
+    if (base64[base64.length - 1] === '=') {
+        bufferLength--;
+        if (base64[base64.length - 2] === '=') {
+            bufferLength--;
+        }
+    }
+    var bytes = new Uint8Array(bufferLength);
+    for (i = 0; i < len; i += 4) {
+        encoded1 = lookup[base64.charCodeAt(i)];
+        encoded2 = lookup[base64.charCodeAt(i + 1)];
+        encoded3 = lookup[base64.charCodeAt(i + 2)];
+        encoded4 = lookup[base64.charCodeAt(i + 3)];
+        bytes[p++] = (encoded1 << 2) | (encoded2 >> 4);
+        bytes[p++] = ((encoded2 & 15) << 4) | (encoded3 >> 2);
+        bytes[p++] = ((encoded3 & 3) << 6) | (encoded4 & 63);
+    }
+    return bytes;
+};
+var arrayToString = function (array) {
+    var str = '';
+    for (var i = 0; i < array.length; i++) {
+        str += String.fromCharCode(array[i]);
+    }
+    return str;
+};
+export var decompressJson = function (compressedJson) {
+    return arrayToString(pako.inflate(decodeFromBase64(compressedJson)));
+};
+export var padStart = function (value, length, padChar) {
+    var padding = '';
+    for (var idx = 0, len = length - value.length; idx < len; idx++) {
+        padding += padChar;
+    }
+    return padding + value;
+};