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comparison main.cpp @ 3:ae3a6d7bcca6 default tip

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cache the package list for better performance
author Yasuri <yasuri@charliesmp.net>
date Sun, 13 Sep 2026 19:48:34 +0000
parents 00b62a080354
children
comparison
equal deleted inserted replaced
2:00b62a080354 3:ae3a6d7bcca6
1 #include <iostream> 1 #include <iostream>
2 #include <sstream> 2 #include <sstream>
3 #include "process.h" 3 #include "process.h"
4 #include <filesystem>
5 #include <fstream>
6 #include <chrono>
7 #include <cstdlib>
8
9 namespace fs = std::filesystem;
10
11 std::string get_package_list() {
12 const char* home = std::getenv("HOME");
13 fs::path cache_dir = fs::path(home) / ".cache" / "xt";
14 fs::path cache_file = cache_dir / "packages.txt";
15
16 const auto max_age = std::chrono::minutes(30);
17
18 if (fs::exists(cache_file)) {
19 auto last_write = fs::last_write_time(cache_file);
20 auto now = decltype(last_write)::clock::now();
21 auto age = now - last_write;
22 if (age < max_age) {
23 std::ifstream in(cache_file);
24 std::string contents((std::istreambuf_iterator<char>(in)), std::istreambuf_iterator<char>());
25 return contents;
26 }
27 }
28
29 // cache missing or stale, re-query
30 char* const query_argv[] = { const_cast<char*>("xbps-query"), const_cast<char*>("-Rs"), const_cast<char*>(""), nullptr };
31 std::string package_list = run_piped(query_argv, "");
32
33 fs::create_directories(cache_dir);
34 std::ofstream out(cache_file);
35 out << package_list;
36
37 return package_list;
38 }
4 std::string extract_pkgname(const std::string& fzf_line) { 39 std::string extract_pkgname(const std::string& fzf_line) {
5 std::istringstream iss(fzf_line); 40 std::istringstream iss(fzf_line);
6 std::string marker, pkgver; 41 std::string marker, pkgver;
7 iss >> marker >> pkgver; 42 iss >> marker >> pkgver;
8 return pkgver; 43 return pkgver;
9 } 44 }
10 int main() { 45 int main() {
11 char* const query_argv[] = { const_cast<char*>("xbps-query"), const_cast<char*>("-Rs"), const_cast<char*>(""), nullptr }; 46 std::string package_list = get_package_list();
12 std::string package_list = run_piped(query_argv, "");
13 char* const fzf_argv[] = { const_cast<char*>("fzf"), nullptr }; 47 char* const fzf_argv[] = { const_cast<char*>("fzf"), nullptr };
14 std::string result = run_piped(fzf_argv, package_list); 48 std::string result = run_piped(fzf_argv, package_list);
15 49
16 // strip trailing newline fzf adds 50 // strip trailing newline fzf adds
17 if (!result.empty() && result.back() == '\n') { 51 if (!result.empty() && result.back() == '\n') {