初始化环境文件

node_modules/@aws-sdk/middleware-flexible-checksums/dist-es/selectChecksumAlgorithmFunction.js

@@ -0,0 +1,32 @@
+import { AwsCrc32c } from "@aws-crypto/crc32c";
+import { Crc64Nvme, crc64NvmeCrtContainer } from "@aws-sdk/crc64-nvme";
+import { ChecksumAlgorithm } from "./constants";
+import { getCrc32ChecksumAlgorithmFunction } from "./getCrc32ChecksumAlgorithmFunction";
+import { CLIENT_SUPPORTED_ALGORITHMS } from "./types";
+export const selectChecksumAlgorithmFunction = (checksumAlgorithm, config) => {
+    const { checksumAlgorithms = {} } = config;
+    switch (checksumAlgorithm) {
+        case ChecksumAlgorithm.MD5:
+            return checksumAlgorithms?.MD5 ?? config.md5;
+        case ChecksumAlgorithm.CRC32:
+            return checksumAlgorithms?.CRC32 ?? getCrc32ChecksumAlgorithmFunction();
+        case ChecksumAlgorithm.CRC32C:
+            return checksumAlgorithms?.CRC32C ?? AwsCrc32c;
+        case ChecksumAlgorithm.CRC64NVME:
+            if (typeof crc64NvmeCrtContainer.CrtCrc64Nvme !== "function") {
+                return checksumAlgorithms?.CRC64NVME ?? Crc64Nvme;
+            }
+            return checksumAlgorithms?.CRC64NVME ?? crc64NvmeCrtContainer.CrtCrc64Nvme;
+        case ChecksumAlgorithm.SHA1:
+            return checksumAlgorithms?.SHA1 ?? config.sha1;
+        case ChecksumAlgorithm.SHA256:
+            return checksumAlgorithms?.SHA256 ?? config.sha256;
+        default:
+            if (checksumAlgorithms?.[checksumAlgorithm]) {
+                return checksumAlgorithms[checksumAlgorithm];
+            }
+            throw new Error(`The checksum algorithm "${checksumAlgorithm}" is not supported by the client.` +
+                ` Select one of ${CLIENT_SUPPORTED_ALGORITHMS}, or provide an implementation to ` +
+                ` the client constructor checksums field.`);
+    }
+};