big-change：添加两种类型结构读写支持

src/history.cpp

@@ -0,0 +1,80 @@
+#include "history.h"
+#include <QDir>
+#include <algorithm>
+#include <filesystem>
+#include <fstream>
+
+namespace fs = std::filesystem;
+
+CHistory::CHistory()
+{
+    default_set();
+}
+
+bool CHistory::push(const std::string& content)
+{
+    std::vector<std::string> vec;
+    read_file(vec);
+
+    if (std::find(vec.begin(), vec.end(), content) == vec.end()) {
+        vec.push_back(content);
+    } else {
+        return true;
+    }
+
+    if (vec.size() > 10) {
+        vec.erase(vec.begin());
+    }
+    if (!write_file(vec)) {
+        return false;
+    }
+    return true;
+}
+
+bool CHistory::get_history(std::vector<std::string>& vec)
+{
+    return read_file(vec);
+}
+
+void CHistory::default_set()
+{
+    QDir dir;
+    std::string path = dir.homePath().toStdString();
+    fs::path p(path);
+    p.append(".config");
+
+    if (!fs::exists(p)) {
+        fs::create_directories(p);
+    }
+
+    work_dir_ = p.string();
+    p.append("OneLevelXmlOpr.history");
+    work_file_ = p.string();
+}
+
+bool CHistory::read_file(std::vector<std::string>& vec)
+{
+    vec.clear();
+    std::ifstream file(work_file_);
+    if (!file.is_open()) {
+        return false;
+    }
+    std::string line;
+    while (std::getline(file, line)) {
+        vec.push_back(line);
+    }
+    return true;
+}
+
+bool CHistory::write_file(std::vector<std::string>& vec)
+{
+    std::ofstream file(work_file_);
+    if (!file.is_open()) {
+        return false;
+    }
+    for (const auto& line : vec) {
+        file << line << std::endl;
+    }
+    file.close();
+    return true;
+}