51 lines
1.3 KiB
Dart
51 lines
1.3 KiB
Dart
import 'dart:io';
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import 'package:crypto/crypto.dart';
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import 'package:flutter_image_compress/flutter_image_compress.dart';
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import 'log_utils.dart';
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String getFileExtension(String fileName) {
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if (fileName.contains('.')) {
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return '.${fileName.split('.').last.toLowerCase()}';
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}
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return '';
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}
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Future<String> generateMD5HashName(String filePath) async {
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final file = File(filePath);
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final bytes = await file.readAsBytes();
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final hash = md5.convert(bytes);
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return hash.toString();
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}
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// 图片压缩方法
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Future<File> compressImage(File file) async {
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try {
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// 获取压缩后的文件路径
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final result = await FlutterImageCompress.compressAndGetFile(
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file.absolute.path,
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'${file.parent.path}/compressed_${DateTime.now().millisecondsSinceEpoch}.jpg',
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minWidth: 800,
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minHeight: 600,
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quality: 70,
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format: CompressFormat.jpeg,
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);
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if (result == null) {
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throw Exception('图片压缩失败');
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}
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return File(result.path);
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} catch (e) {
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logger.e('图片压缩失败，使用原文件: $e');
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return file;
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}
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}
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// 检查是否为图片文件
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bool isImageFile(String fileName) {
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final imageExtensions = ['.jpg', '.jpeg', '.png', '.gif', '.bmp', '.webp'];
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final extension = fileName.toLowerCase().substring(fileName.lastIndexOf('.'));
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return imageExtensions.contains(extension);
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}
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