rearrage_stuff

node_modules/@bufbuild/protobuf/dist/cjs/wire/base64-encoding.js

@@ -0,0 +1,156 @@
+"use strict";
+// Copyright 2021-2025 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.base64Decode = base64Decode;
+exports.base64Encode = base64Encode;
+/**
+ * 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
+ */
+function base64Decode(base64Str) {
+    const table = getDecodeTable();
+    // 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 = table[base64Str.charCodeAt(i)];
+        if (b === undefined) {
+            switch (base64Str[i]) {
+                // @ts-ignore TS7029: Fallthrough case in switch -- ignore instead of expect-error for compiler settings without noFallthroughCasesInSwitch: true
+                case "=":
+                    groupPos = 0; // reset state when padding found
+                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.
+ *
+ * By default, this function uses the standard base64 encoding with padding.
+ *
+ * To encode without padding, use encoding = "std_raw".
+ *
+ * To encode with the URL encoding, use encoding = "url", which replaces the
+ * characters +/ by their URL-safe counterparts -_, and omits padding.
+ */
+function base64Encode(bytes, encoding = "std") {
+    const table = getEncodeTable(encoding);
+    const pad = encoding == "std";
+    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 += table[b >> 2];
+                p = (b & 3) << 4;
+                groupPos = 1;
+                break;
+            case 1:
+                base64 += table[p | (b >> 4)];
+                p = (b & 15) << 2;
+                groupPos = 2;
+                break;
+            case 2:
+                base64 += table[p | (b >> 6)];
+                base64 += table[b & 63];
+                groupPos = 0;
+                break;
+        }
+    }
+    // add output padding
+    if (groupPos) {
+        base64 += table[p];
+        if (pad) {
+            base64 += "=";
+            if (groupPos == 1)
+                base64 += "=";
+        }
+    }
+    return base64;
+}
+// lookup table from base64 character to byte
+let encodeTableStd;
+let encodeTableUrl;
+// lookup table from base64 character *code* to byte because lookup by number is fast
+let decodeTable;
+function getEncodeTable(encoding) {
+    if (!encodeTableStd) {
+        encodeTableStd =
+            "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/".split("");
+        encodeTableUrl = encodeTableStd.slice(0, -2).concat("-", "_");
+    }
+    return encoding == "url"
+        ? // biome-ignore lint/style/noNonNullAssertion: TS fails to narrow down
+            encodeTableUrl
+        : encodeTableStd;
+}
+function getDecodeTable() {
+    if (!decodeTable) {
+        decodeTable = [];
+        const encodeTable = getEncodeTable("std");
+        for (let i = 0; i < encodeTable.length; i++)
+            decodeTable[encodeTable[i].charCodeAt(0)] = i;
+        // support base64url variants
+        decodeTable["-".charCodeAt(0)] = encodeTable.indexOf("+");
+        decodeTable["_".charCodeAt(0)] = encodeTable.indexOf("/");
+    }
+    return decodeTable;
+}