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#include "history.h"
#include <sys/stat.h>
#include <fcntl.h>
#include <print>
#include <cstdio>
#include <unistd.h>
#include <fstream>
#include <iostream>
#include <sys/stat.h>
#include "util/io.h"
using namespace std;
namespace ov4
{
void add_history(const std::string &s)
{
history_vec.push_back(s);
}
void clear_history()
{
history_vec.clear();
}
size_t get_last_index()
{
return history_vec.size() - 1;
}
string get_default_history_path()
{
return get_home_dir() + '/' + ".ccshell_history";
}
void load_history(const string &path)
{
history_vec.clear();
ifstream ifs(path);
if (!ifs.is_open())
{
loggerln("load_history: fail to open history");
return;
}
string tmp;
while (getline(ifs, tmp))
{
history_vec.push_back(tmp);
}
return;
}
void save_history(const string &path)
{
string tmp_path = path + ".tmp";
int fd = open(tmp_path.c_str(), (O_WRONLY | O_CREAT | O_TRUNC), (S_IRUSR | S_IWUSR));
if (fd == -1)
{
loggerln("save_history: fail to open() history");
return;
}
FILE *f = fdopen(fd, "w");
if (f == nullptr)
{
close(fd);
loggerln("save_history: fail to fdopen() history");
return;
}
for (auto &c : history_vec)
{
println(f, "{}", c);
}
bool success_write = true;
if (fflush(f) != 0) success_write = false;
if (fsync(fd) != 0) success_write = false;
if (fclose(f) != 0) success_write = false;
if (!success_write)
{
loggerln("save_history: fail to write");
return;
}
// atomic rename (replace)
if (rename(tmp_path.c_str(), path.c_str()) != 0)
{
loggerln("save_history: fail to rename");
return;
}
}
}
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