91 lines
2.2 KiB
Dart
91 lines
2.2 KiB
Dart
import 'dart:convert';
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import 'dart:io';
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import 'package:path/path.dart' as path;
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/// 文件操作工具类
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class FileHelper {
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/// 私有构造函数，防止实例化
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FileHelper._();
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/// 读取 JSON 文件并解析
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static Map<String, dynamic> readJsonFile(String filePath) {
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final file = File(filePath);
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if (!file.existsSync()) {
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throw FileNotFoundException('文件不存在: $filePath');
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}
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try {
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final content = file.readAsStringSync();
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return json.decode(content) as Map<String, dynamic>;
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} on FormatException catch (e) {
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throw FileParseException('JSON 解析错误: ${e.message}');
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}
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}
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/// 写入文件内容
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///
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/// 如果目录不存在，会自动创建
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static void writeFile(String filePath, String content) {
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final file = File(filePath);
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final directory = file.parent;
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// 确保目录存在
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if (!directory.existsSync()) {
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directory.createSync(recursive: true);
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}
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file.writeAsStringSync(content);
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}
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/// 检查文件是否存在
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static bool fileExists(String filePath) {
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return File(filePath).existsSync();
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}
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/// 获取相对于工作目录的绝对路径
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static String resolvePropertyPath(String relativePath, {String? workingDir}) {
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final directory = workingDir ?? Directory.current.path;
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if (path.isAbsolute(relativePath)) {
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return relativePath;
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}
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return path.join(directory, relativePath);
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}
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/// 获取文件的目录路径
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static String getDirectoryPath(String filePath) {
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return path.dirname(filePath);
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}
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/// 获取文件名（不含扩展名）
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static String getFileNameWithoutExtension(String filePath) {
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return path.basenameWithoutExtension(filePath);
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}
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/// 获取文件名（含扩展名）
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static String getFileName(String filePath) {
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return path.basename(filePath);
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}
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}
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/// 文件未找到异常
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class FileNotFoundException implements Exception {
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FileNotFoundException(this.message);
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final String message;
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@override
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String toString() => 'FileNotFoundException: $message';
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}
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/// 文件解析异常
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class FileParseException implements Exception {
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FileParseException(this.message);
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final String message;
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@override
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String toString() => 'FileParseException: $message';
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}
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