Erster Commit

2026-08-22 08:40:29 +02:00
commit 875477d425
1961 changed files with 930336 additions and 0 deletions
@@ -0,0 +1,128 @@
+"use strict";
+// Copyright 2021-2024 Buf Technologies, Inc.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.protoBase64 = void 0;
+/* eslint-disable @typescript-eslint/ban-ts-comment, @typescript-eslint/no-unnecessary-condition, prefer-const */
+// lookup table from base64 character to byte
+let encTable = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/".split("");
+// lookup table from base64 character *code* to byte because lookup by number is fast
+let decTable = [];
+for (let i = 0; i < encTable.length; i++)
+    decTable[encTable[i].charCodeAt(0)] = i;
+// support base64url variants
+decTable["-".charCodeAt(0)] = encTable.indexOf("+");
+decTable["_".charCodeAt(0)] = encTable.indexOf("/");
+exports.protoBase64 = {
+    /**
+     * Decodes a base64 string to a byte array.
+     *
+     * - ignores white-space, including line breaks and tabs
+     * - allows inner padding (can decode concatenated base64 strings)
+     * - does not require padding
+     * - understands base64url encoding:
+     *   "-" instead of "+",
+     *   "_" instead of "/",
+     *   no padding
+     */
+    dec(base64Str) {
+        // estimate byte size, not accounting for inner padding and whitespace
+        let es = (base64Str.length * 3) / 4;
+        if (base64Str[base64Str.length - 2] == "=")
+            es -= 2;
+        else if (base64Str[base64Str.length - 1] == "=")
+            es -= 1;
+        let bytes = new Uint8Array(es), bytePos = 0, // position in byte array
+        groupPos = 0, // position in base64 group
+        b, // current byte
+        p = 0; // previous byte
+        for (let i = 0; i < base64Str.length; i++) {
+            b = decTable[base64Str.charCodeAt(i)];
+            if (b === undefined) {
+                switch (base64Str[i]) {
+                    // @ts-ignore TS7029: Fallthrough case in switch
+                    case "=":
+                        groupPos = 0; // reset state when padding found
+                    // @ts-ignore TS7029: Fallthrough case in switch
+                    case "\n":
+                    case "\r":
+                    case "\t":
+                    case " ":
+                        continue; // skip white-space, and padding
+                    default:
+                        throw Error("invalid base64 string.");
+                }
+            }
+            switch (groupPos) {
+                case 0:
+                    p = b;
+                    groupPos = 1;
+                    break;
+                case 1:
+                    bytes[bytePos++] = (p << 2) | ((b & 48) >> 4);
+                    p = b;
+                    groupPos = 2;
+                    break;
+                case 2:
+                    bytes[bytePos++] = ((p & 15) << 4) | ((b & 60) >> 2);
+                    p = b;
+                    groupPos = 3;
+                    break;
+                case 3:
+                    bytes[bytePos++] = ((p & 3) << 6) | b;
+                    groupPos = 0;
+                    break;
+            }
+        }
+        if (groupPos == 1)
+            throw Error("invalid base64 string.");
+        return bytes.subarray(0, bytePos);
+    },
+    /**
+     * Encode a byte array to a base64 string.
+     */
+    enc(bytes) {
+        let base64 = "", groupPos = 0, // position in base64 group
+        b, // current byte
+        p = 0; // carry over from previous byte
+        for (let i = 0; i < bytes.length; i++) {
+            b = bytes[i];
+            switch (groupPos) {
+                case 0:
+                    base64 += encTable[b >> 2];
+                    p = (b & 3) << 4;
+                    groupPos = 1;
+                    break;
+                case 1:
+                    base64 += encTable[p | (b >> 4)];
+                    p = (b & 15) << 2;
+                    groupPos = 2;
+                    break;
+                case 2:
+                    base64 += encTable[p | (b >> 6)];
+                    base64 += encTable[b & 63];
+                    groupPos = 0;
+                    break;
+            }
+        }
+        // add output padding
+        if (groupPos) {
+            base64 += encTable[p];
+            base64 += "=";
+            if (groupPos == 1)
+                base64 += "=";
+        }
+        return base64;
+    },
+};