From 02a2e4676890998c38c0fbcc028f940697a8dc66 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E5=85=94=E5=8F=BD=E5=92=8C=E7=8C=AA=E6=89=92?=
 <zhujiating2@huawei.com>
Date: Mon, 24 Mar 2025 11:31:34 +0800
Subject: [PATCH] truncate_async
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Signed-off-by: 兔叽和猪扒 <zhujiating2@huawei.com>
---
 .../js/src/mod_fs/ani/ets/@ohos.file.fs.ets   | 50 +++++++++++++++++++
 1 file changed, 50 insertions(+)

diff --git a/interfaces/kits/js/src/mod_fs/ani/ets/@ohos.file.fs.ets b/interfaces/kits/js/src/mod_fs/ani/ets/@ohos.file.fs.ets
index 67eb95add..c85584a76 100644
--- a/interfaces/kits/js/src/mod_fs/ani/ets/@ohos.file.fs.ets
+++ b/interfaces/kits/js/src/mod_fs/ani/ets/@ohos.file.fs.ets
@@ -333,6 +333,56 @@ function truncateSync(file: string | number, len?: number): void {
   return FileIoImpl.truncateSync(file, len)
 }
 
+function truncate(file: string | number, len?: number): Promise<void> {
+  return new Promise<void>((resolve: (result: undefined) => void, reject: (e: BusinessError<void>) => void): void => {
+    if (len === undefined) {
+      let promise = taskpool.execute((file: string | number): undefined => {
+        return FileIoImpl.truncateSync(file);
+      }, file);
+      promise.then((ret: NullishType): void => {
+        resolve(undefined);
+      }).catch((e: BusinessError): void => {
+        reject(e);
+      });
+    } else {
+      let promise = taskpool.execute((file: string | number, len: number): undefined => {
+        return FileIoImpl.truncateSync(file, len);
+      }, file, len);
+      promise.then((ret: NullishType): void => {
+        resolve(undefined);
+      }).catch((e: BusinessError): void => {
+        reject(e);
+      });
+    }
+  })
+}
+
+function truncate(file: string | number, callback: AsyncCallback<void>): void {
+  let promise = taskpool.execute((file: string | number): undefined => {
+    return FileIoImpl.truncateSync(file);
+  }, file);
+  promise.then((ret: NullishType): void => {
+    let e = new BusinessError<void>();
+    e.code = 0;
+    callback(e, undefined);
+  }).catch((e: BusinessError): void => {
+    callback(e, undefined);
+  });
+}
+
+function truncate(file: string | number, len: number, callback: AsyncCallback<void>): void {
+  let promise = taskpool.execute((file: string | number, len: number): undefined => {
+    return FileIoImpl.truncateSync(file, len);
+  }, file, len);
+  promise.then((ret: NullishType): void => {
+    let e = new BusinessError<void>();
+    e.code = 0;
+    callback(e, undefined);
+  }).catch((e: BusinessError): void => {
+    callback(e, undefined);
+  });
+}
+
 function unlinkSync(path: string): void {
   return FileIoImpl.unlinkSync(path)
 }
-- 
Gitee