From 465fca57c2e7e2eaa245b0643d2bff1256f98b4d Mon Sep 17 00:00:00 2001
From: yankun <1939810907@qq.com>
Date: Mon, 4 Dec 2023 21:44:03 +0800
Subject: [PATCH] feat: add from_file API

---
 fastbloom-rs/src/bloom.rs |  1 +
 fastbloom-rs/src/vec.rs   | 13 +++----------
 2 files changed, 4 insertions(+), 10 deletions(-)

diff --git a/fastbloom-rs/src/bloom.rs b/fastbloom-rs/src/bloom.rs
index 0ea5674..e522d23 100644
--- a/fastbloom-rs/src/bloom.rs
+++ b/fastbloom-rs/src/bloom.rs
@@ -1,5 +1,6 @@
 use std::cmp::min;
 use std::fs::{File, OpenOptions};
+use std::fs;
 use std::io::{Write, Read};
 use std::ptr::slice_from_raw_parts;
 
diff --git a/fastbloom-rs/src/vec.rs b/fastbloom-rs/src/vec.rs
index 9d5c215..90ab7a0 100644
--- a/fastbloom-rs/src/vec.rs
+++ b/fastbloom-rs/src/vec.rs
@@ -1,5 +1,5 @@
 use core::slice;
-use std::{fs::File, os::windows::fs::FileExt};
+use std::{fs::File, io::{Read, Seek}};
 
 use crate::builder::SUFFIX;
 
@@ -49,15 +49,8 @@ impl BloomBitVec {
             slice::from_raw_parts_mut(buf, bytes_len.try_into().unwrap())
         };
 
-        let mut cursor = seek;
-        let mut read = 0u64;
-
-        while read < bytes_len {
-            let size = file.seek_read(&mut buf[read as usize ..], cursor).unwrap() as u64;
-            read = read + size;
-            cursor += size;
-        }
-        
+        file.seek(std::io::SeekFrom::Start(seek)).unwrap();
+        file.read_exact(buf).unwrap();
 
         BloomBitVec {
             storage,