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61 lines
1.8 KiB
61 lines
1.8 KiB
package model;
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import java.io.IOException;
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import java.nio.charset.StandardCharsets;
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import java.nio.file.DirectoryStream;
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import java.nio.file.Files;
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import java.nio.file.Path;
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import java.nio.file.Paths;
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import java.util.ArrayList;
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import java.util.List;
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import java.util.stream.Collectors;
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/**
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* 读取用户文件夹下已有题目的所有题目文本（用于查重）
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*/
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public class LoadFile {
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public static List<String> loadExistingQuestions(String username) {
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List<String> all = new ArrayList<>();
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Path userDir = Paths.get("data", username);
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if (!Files.exists(userDir)) {
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return all;
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}
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try (DirectoryStream<Path> ds = Files.newDirectoryStream(userDir, "*.txt")) {
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for (Path p : ds) {
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List<String> lines = Files.readAllLines(p, StandardCharsets.UTF_8);
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StringBuilder cur = new StringBuilder();
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for (String line : lines) {
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if (line.matches("^\\s*\\d+\\..*")) {
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if (!cur.isEmpty()) {
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all.add(cur.toString().trim());
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}
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cur.setLength(0);
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cur.append(line.replaceFirst("^\\s*\\d+\\.", "").trim());
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} else {
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if (line.trim().isEmpty()) {
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if (!cur.isEmpty()) {
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all.add(cur.toString().trim());
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cur.setLength(0);
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}
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} else {
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if (!cur.isEmpty()) {
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cur.append(" ");
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}
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cur.append(line.trim());
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}
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}
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}
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if (!cur.isEmpty()) {
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all.add(cur.toString().trim());
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}
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}
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} catch (IOException e) {
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throw new RuntimeException("读取题目文件失败：" + e.getMessage(), e);
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}
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return all.stream().map(String::trim).filter(s -> !s.isEmpty()).distinct()
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.collect(Collectors.toList());
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}
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}
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