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LocalFs

Struct LocalFs 

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pub struct LocalFs { /* private fields */ }
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本地文件系统存储后端

支持按相对路径读写/删除文件,自动创建目录,自动推算 MIME 类型。

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impl LocalFs

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pub fn new(root_dir: &str) -> Self

创建本地文件存储实例

root_dir 相对路径会被展开为基于 current_dir 的绝对路径。

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pub fn root_dir(&self) -> &Path

获取存储根目录路径

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pub async fn write( &self, relative_path: &str, data: &[u8], ) -> StoreResult<FileMeta>

写入文件(relative_path 保留原始名称,UUID 作为 file_id)

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pub async fn write_with_name( &self, original_name: &str, data: &[u8], ) -> StoreResult<FileMeta>

写入文件(自动按日期分目录:YYYY/MM/DD/uuid.ext

write 更安全——上层无需关心路径命名。

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pub async fn read(&self, relative_path: &str) -> StoreResult<Vec<u8>>

读取文件全部内容

文件不存在返回 Err("文件不存在: ...")

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pub async fn delete(&self, relative_path: &str) -> StoreResult<()>

删除文件(不存在不报错)

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pub async fn exists(&self, relative_path: &str) -> bool

检查文件是否存在

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