Query the modification time with std::filesystem

4 files changed, 56 insertions, 133 deletions

diff --git a/backend/job.cpp b/backend/job.cpp
index 68eda1a..f95b33a 100644
--- a/backend/job.cpp
+++ b/backend/job.cpp
@@ -21,6 +21,7 @@ module;
 #include <list>
 #include <boost/filesystem.hpp>
 #include <boost/algorithm/string.hpp>
+#include <regex>
 
 export module katja.job;
 
@@ -38,21 +39,18 @@ void pk_backend_initialize(GKeyFile *conf)
     int ret;
     std::uint8_t i;
     std::size_t groups_len;
-    GFile *conf_file;
-    GFileInfo *file_info;
     GKeyFile *key_conf;
     GError *err = nullptr;
     sqlite3 *db;
     sqlite3_stmt *stmt;
 
-    g_debug("backend: initialize");
     curl_global_init(CURL_GLOBAL_DEFAULT);
 
     /* Open the database. We will need it to save the time the configuration file was last modified. */
     auto path = std::filesystem::path(LOCALSTATEDIR) / "cache" / "katja" / "metadata.db";
     if (sqlite3_open(path.c_str(), &db) != SQLITE_OK)
     {
-        g_error("%s: %s", path.c_str(), sqlite3_errmsg(db));
+        std::cerr << path.native() << ": " << sqlite3_errmsg(db) << std::endl;
     }
 
     /* Read the configuration file */
@@ -61,27 +59,19 @@ void pk_backend_initialize(GKeyFile *conf)
     g_key_file_load_from_file(key_conf, path.c_str(), G_KEY_FILE_NONE, &err);
     if (err)
     {
-        g_error("%s: %s", path.c_str(), err->message);
+        std::cerr << path.native() << ": " << err->message << std::endl;
         g_error_free(err);
     }
 
-    conf_file = g_file_new_for_path(path.c_str());
-    if (!(file_info = g_file_query_info(conf_file,
-                                        "time::modified-usec",
-                                        G_FILE_QUERY_INFO_NOFOLLOW_SYMLINKS,
-                                        nullptr,
-                                        &err)))
-    {
-        g_error("%s", err->message);
-        g_error_free(err);
-    }
+    std::chrono::time_point<std::chrono::file_clock> file_info = std::filesystem::last_write_time(path);
+    auto microseconds = std::chrono::duration_cast<std::chrono::microseconds>(file_info.time_since_epoch());
 
     if ((ret = sqlite3_prepare_v2(db,
                     "UPDATE cache_info SET value = ? WHERE key LIKE 'last_modification'",
                     -1,
                     &stmt,
                     nullptr)) == SQLITE_OK) {
-        ret = sqlite3_bind_int(stmt, 1, g_file_info_get_attribute_uint32(file_info, "time::modified-usec"));
+        ret = sqlite3_bind_int(stmt, 1, microseconds.count());
         if (ret == SQLITE_OK)
         {
             ret = sqlite3_step(stmt);
@@ -90,15 +80,12 @@ void pk_backend_initialize(GKeyFile *conf)
     }
     if ((ret != SQLITE_OK) && (ret != SQLITE_DONE))
     {
-        g_error("%s: %s", path.c_str(), sqlite3_errstr(ret));
+        std::cerr << path.native() << ": " << sqlite3_errstr(ret) << std::endl;
     }
     else if (!sqlite3_changes(db))
     {
-        g_error("Failed to update database: %s", path.c_str());
+        std::cerr << "Failed to update database: " << path.native() << std::endl;
     }
-
-    g_object_unref(file_info);
-    g_object_unref(conf_file);
     sqlite3_close_v2(db);
 
     /* Initialize an object for each well-formed repository */
@@ -124,8 +111,6 @@ void pk_backend_initialize(GKeyFile *conf)
 
 void pk_backend_destroy()
 {
-    g_debug("backend: destroy");
-
     repos.clear();
     curl_global_cleanup();
 }
@@ -243,8 +228,8 @@ void pk_backend_get_details(JobData *job_data, char **package_ids)
 {
     std::optional<std::string> homepage;
     std::size_t i;
-    GRegex *expr;
-    GMatchInfo *match_info;
+    std::regex expr;
+    std::smatch match_info;
     GError *err = nullptr;
     sqlite3_stmt *stmt;
     std::string desc;
@@ -271,19 +256,12 @@ void pk_backend_get_details(JobData *job_data, char **package_ids)
     desc = reinterpret_cast<const char *>(sqlite3_column_text(stmt, 0));
 
     /* Regular expression for searching a homepage */
-    expr = g_regex_new("(?:http|ftp):\\/\\/[[:word:]\\/\\-\\.]+[[:word:]\\/](?=\\.?$)",
-            (GRegexCompileFlags)(G_REGEX_OPTIMIZE | G_REGEX_DUPNAMES),
-            (GRegexMatchFlags)(0),
-            &err);
-    if (err)
-    {
-        std::cerr << err->message << std::endl;
-        g_error_free(err);
-        goto out;
-    }
-    if (g_regex_match(expr, desc.c_str(), (GRegexMatchFlags) 0, &match_info))
+    expr = std::regex("(?:http|ftp):\\/\\/[[:word:]\\/\\-\\.]+[[:word:]\\/](?=\\.?$)",
+            std::regex::optimize);
+
+    if (std::regex_match(std::cbegin(desc), std::cend(desc), match_info, expr))
     {
-        homepage = g_match_info_fetch(match_info, 0); /* URL */
+        homepage = match_info[0]; /* URL */
         /* Remove the last sentence with the copied URL */
         for (i = desc.size() - 1; i > 0; i--)
         {
@@ -293,9 +271,7 @@ void pk_backend_get_details(JobData *job_data, char **package_ids)
                 break;
             }
         }
-        g_match_info_free(match_info);
     }
-    g_regex_unref(expr);
 
     /* Ready */
     job_data->details(package_ids[0],
@@ -531,11 +507,8 @@ void pk_backend_remove_packages(JobData* job_data, const std::vector<std::string
 
 void pk_backend_get_updates(JobData *job_data)
 {
-    const char *pkg_metadata_filename;
-    GFile *pkg_metadata_dir;
-    GFileEnumerator *pkg_metadata_enumerator;
-    GFileInfo *pkg_metadata_file_info;
-    GError *err = nullptr;
+    std::filesystem::path pkg_metadata_filename;
+    std::filesystem::path pkg_metadata_dir;
     sqlite3_stmt *stmt;
 
     if ((sqlite3_prepare_v2(job_data->db,
@@ -552,22 +525,10 @@ void pk_backend_get_updates(JobData *job_data)
     }
 
     /* Read the package metadata directory and comprare all installed packages with ones in the cache */
-    pkg_metadata_dir = g_file_new_for_path("/var/log/packages");
-    pkg_metadata_enumerator = g_file_enumerate_children(pkg_metadata_dir, "standard::name",
-                                                         G_FILE_QUERY_INFO_NONE,
-                                                         nullptr,
-                                                         &err);
-    g_object_unref(pkg_metadata_dir);
-    if (err)
+    pkg_metadata_dir = std::filesystem::path("/var/log/packages");
+    for (const auto& pkg_metadata_file_info : std::filesystem::directory_iterator{ pkg_metadata_dir })
     {
-        std::cerr << "/var/log/packages: " << err->message << std::endl;
-        g_error_free(err);
-        goto out;
-    }
-
-    while ((pkg_metadata_file_info = g_file_enumerator_next_file(pkg_metadata_enumerator, nullptr, nullptr)))
-    {
-        pkg_metadata_filename = g_file_info_get_name(pkg_metadata_file_info);
+        pkg_metadata_filename = pkg_metadata_file_info.path();
         std::vector<std::string> tokens = split_package_name(pkg_metadata_filename).value();
 
         /* Select the package from the database */
@@ -597,10 +558,7 @@ void pk_backend_get_updates(JobData *job_data)
 
         sqlite3_clear_bindings(stmt);
         sqlite3_reset(stmt);
-
-        g_object_unref(pkg_metadata_file_info);
     }
-    g_object_unref(pkg_metadata_enumerator);
 
 out:
     sqlite3_finalize(stmt);
@@ -644,9 +602,6 @@ void pk_backend_refresh_cache(JobData *job_data, bool force)
     char *db_err;
     int ret;
     std::forward_list<katja::cache_entry> file_list;
-    GFile *db_file = nullptr;
-    GFileInfo *file_info = nullptr;
-    GError *err = nullptr;
     sqlite3_stmt *stmt = nullptr;
 
     /* Create temporary directory */
@@ -658,14 +613,8 @@ void pk_backend_refresh_cache(JobData *job_data, bool force)
     if (!force)
     {
         auto path = std::filesystem::path(LOCALSTATEDIR) / "cache" / "katja" / "metadata.db";
-        db_file = g_file_new_for_path(path.native().c_str());
-        file_info = g_file_query_info(db_file, "time::modified-usec", G_FILE_QUERY_INFO_NOFOLLOW_SYMLINKS, nullptr, &err);
-        if (err)
-        {
-            std::cerr << path << ": " << err->message;
-            g_error_free(err);
-            goto out;
-        }
+        std::chrono::time_point<std::chrono::file_clock> file_info = std::filesystem::last_write_time(path);
+        auto microseconds = std::chrono::duration_cast<std::chrono::microseconds>(file_info.time_since_epoch());
         ret = sqlite3_prepare_v2(job_data->db,
                                  "SELECT value FROM cache_info WHERE key LIKE 'last_modification'",
                                  -1,
@@ -676,7 +625,7 @@ void pk_backend_refresh_cache(JobData *job_data, bool force)
             std::cerr << path << ": " << sqlite3_errstr(ret) << std::endl;
             goto out;
         }
-        if ((std::uint32_t) sqlite3_column_int(stmt, 0) > g_file_info_get_attribute_uint32(file_info, "time::modified-usec"))
+        if ((std::uint32_t) sqlite3_column_int(stmt, 0) > microseconds.count())
         {
             force = true;
         }
@@ -700,7 +649,7 @@ void pk_backend_refresh_cache(JobData *job_data, bool force)
     /* Download repository */
     for (auto& l : file_list)
     {
-        get_file(&job_data->curl, l.first.c_str(), l.second.native().c_str());
+        get_file(&job_data->curl, l.first.c_str(), l.second);
     }
 
     /* Refresh cache */
@@ -711,14 +660,6 @@ void pk_backend_refresh_cache(JobData *job_data, bool force)
 
 out:
     sqlite3_finalize(stmt);
-    if (file_info)
-    {
-        g_object_unref(file_info);
-    }
-    if (db_file)
-    {
-        g_object_unref(db_file);
-    }
     std::filesystem::remove_all(tmp_dir_name);
 }
 }
diff --git a/backend/pkgtools.cpp b/backend/pkgtools.cpp
index f6c9b00..e3f7355 100644
--- a/backend/pkgtools.cpp
+++ b/backend/pkgtools.cpp
@@ -109,7 +109,7 @@ public:
                 + reinterpret_cast<const char *>(sqlite3_column_text(statement, 1));
 
             ret = std::filesystem::exists(dest_filename)
-                || get_file(&curl, source_url.c_str(), dest_filename.native().c_str()) == CURLE_OK;
+                || get_file(&curl, source_url.c_str(), dest_filename) == CURLE_OK;
 
             if (curl)
             {
diff --git a/backend/slackpkg.cpp b/backend/slackpkg.cpp
index 2f418a8..c240088 100644
--- a/backend/slackpkg.cpp
+++ b/backend/slackpkg.cpp
@@ -85,7 +85,7 @@ public:
             source_dest.first = this->mirror + current_priority + "/PACKAGES.TXT";
             source_dest.second = tmpl / this->name / "PACKAGES.TXT";
 
-            if (get_file(&curl, source_dest.first.c_str(), nullptr) == CURLE_OK)
+            if (get_file(&curl, source_dest.first.c_str(), std::nullopt) == CURLE_OK)
             {
                 file_list.emplace_front(std::move(source_dest));
             }
@@ -98,7 +98,7 @@ public:
             source_dest.first = this->mirror + current_priority + "/MANIFEST.bz2";
             source_dest.second = tmpl / this->name / (current_priority + "-MANIFEST.bz2");
 
-            if (get_file(&curl, source_dest.first.c_str(), nullptr) == CURLE_OK)
+            if (get_file(&curl, source_dest.first.c_str(), std::nullopt) == CURLE_OK)
             {
                 file_list.emplace_front(std::move(source_dest));
             }
diff --git a/backend/utils.cpp b/backend/utils.cpp
index 871fad8..816fcfd 100644
--- a/backend/utils.cpp
+++ b/backend/utils.cpp
@@ -14,6 +14,8 @@ module;
 #include <string>
 #include <vector>
 #include <optional>
+#include <filesystem>
+#include <boost/algorithm/string.hpp>
 
 export module katja.utils;
 
@@ -76,12 +78,12 @@ struct DummyJobData final : JobData
  *
  * Returns: CURLE_OK (zero) on success, non-zero otherwise.
  **/
-CURLcode get_file(CURL **curl, const char *source_url, const char *dest)
+CURLcode get_file(CURL **curl, const char *source_url, const std::optional<std::filesystem::path>& dest)
 {
-    const char *dest_dir_name;
     FILE *fout = nullptr;
     CURLcode ret;
     glong response_code;
+    std::string dest_dir_name;
 
     if ((*curl == nullptr) && (!(*curl = curl_easy_init())))
     {
@@ -91,7 +93,7 @@ CURLcode get_file(CURL **curl, const char *source_url, const char *dest)
     curl_easy_setopt(*curl, CURLOPT_FOLLOWLOCATION, 1L);
     curl_easy_setopt(*curl, CURLOPT_URL, source_url);
 
-    if (dest == nullptr)
+    if (!dest.has_value())
     {
         curl_easy_setopt(*curl, CURLOPT_NOBODY, 1L);
         curl_easy_setopt(*curl, CURLOPT_HEADER, 1L);
@@ -105,13 +107,12 @@ CURLcode get_file(CURL **curl, const char *source_url, const char *dest)
     }
     else
     {
-        if (g_file_test(dest, G_FILE_TEST_IS_DIR))
+        dest_dir_name = dest.value().native();
+        if (std::filesystem::is_directory(dest.value()))
         {
-            dest_dir_name = dest;
-            dest = g_strconcat(dest_dir_name, g_strrstr(source_url, "/"), nullptr);
-            g_free(const_cast<char *>(dest_dir_name));
+            dest_dir_name += strrchr(source_url, '/');
         }
-        if ((fout = fopen(dest, "ab")) == nullptr)
+        if ((fout = fopen(dest_dir_name.c_str(), "ab")) == nullptr)
         {
             return CURLE_WRITE_ERROR;
         }
@@ -132,7 +133,7 @@ CURLcode get_file(CURL **curl, const char *source_url, const char *dest)
  **/
 std::optional<std::vector<std::string>> split_package_name(const std::string& pkg_filename)
 {
-    char *pkg_full_name;
+    std::string pkg_full_name;
 
     int len = pkg_filename.size();
     if (len < 4)
@@ -144,28 +145,23 @@ std::optional<std::vector<std::string>> split_package_name(const std::string& pk
     if (pkg_filename[len - 4] == '.')
     {
         /* Full name without extension */
-        len -= 4;
-        pkg_full_name = g_strndup(pkg_filename.data(), len);
-        pkg_tokens[3] = g_strdup(pkg_full_name);
+        pkg_tokens[3] = pkg_filename;
+        pkg_full_name = std::string(std::crbegin(pkg_filename) + 4, std::crend(pkg_filename));
 
         /* The last 3 characters should be the file extension */
-        pkg_tokens[4] = g_strdup(pkg_filename.data() + len + 1);
+        pkg_tokens[4] = std::string(std::cbegin(pkg_filename) + len + 1, std::cend(pkg_filename));
     }
     else
     {
-        pkg_full_name = g_strdup(pkg_filename.c_str());
+        pkg_full_name = std::string(std::crbegin(pkg_filename), std::crend(pkg_filename));
     }
 
     /* Reverse all of the bytes in the package filename to get the name, version and the architecture */
-    g_strreverse (pkg_full_name);
-    char **reversed_tokens = g_strsplit(pkg_full_name, "-", 4);
-    pkg_tokens[0] = g_strreverse(reversed_tokens[3]); /* Name */
-    pkg_tokens[1] = g_strreverse(reversed_tokens[2]); /* Version */
-    pkg_tokens[2] = g_strreverse(reversed_tokens[1]); /* Architecture */
-
-    g_free(reversed_tokens[0]); /* Build number */
-    g_free(reversed_tokens);
-    g_free(pkg_full_name);
+    std::vector<std::string> reversed_tokens;
+    boost::algorithm::split(reversed_tokens, pkg_full_name, boost::is_any_of("-"));
+    pkg_tokens[0] = std::string(std::crbegin(reversed_tokens[3]), std::crend(reversed_tokens[3])); /* Name */
+    pkg_tokens[1] = std::string(std::crbegin(reversed_tokens[2]), std::crend(reversed_tokens[2])); /* Version */
+    pkg_tokens[2] = std::string(std::crbegin(reversed_tokens[1]), std::crend(reversed_tokens[1])); /* Architecture */
 
     return pkg_tokens;
 }
@@ -180,20 +176,18 @@ std::optional<std::vector<std::string>> split_package_name(const std::string& pk
  **/
 Info is_installed(const char *pkg_fullname)
 {
-    GFileEnumerator *pkg_metadata_enumerator;
-    GFileInfo *pkg_metadata_file_info;
-    GFile *pkg_metadata_dir;
     Info ret = Info::installing;
     const char *it;
     std::uint8_t dashes = 0;
     ptrdiff_t pkg_name;
 
-    g_return_val_if_fail(pkg_fullname != nullptr, Info::unknown);
+    if (pkg_fullname == nullptr)
+    {
+        return Info::unknown;
+    }
 
     // We want to find the package name without version for the package we're
     // looking for.
-    g_debug("Looking if %s is installed", pkg_fullname);
-
     for (it = pkg_fullname + strlen(pkg_fullname); it != pkg_fullname; --it)
     {
         if (*it == '-')
@@ -213,29 +207,21 @@ Info is_installed(const char *pkg_fullname)
 
     // Read the package metadata directory and comprare all installed packages
     // with ones in the cache.
-    pkg_metadata_dir = g_file_new_for_path("/var/log/packages");
-    if (!(pkg_metadata_enumerator = g_file_enumerate_children(pkg_metadata_dir,
-                                                              "standard::name",
-                                                              G_FILE_QUERY_INFO_NONE,
-                                                              nullptr,
-                                                              nullptr)))
-    {
-        g_object_unref(pkg_metadata_dir);
-        return Info::unknown;
-    }
+    auto pkg_metadata_dir = std::filesystem::path("/var/log/packages");
 
-    while ((pkg_metadata_file_info = g_file_enumerator_next_file(pkg_metadata_enumerator, nullptr, nullptr)))
+    for (const auto& pkg_metadata_file_info : std::filesystem::directory_iterator{ pkg_metadata_dir })
     {
-        const char *dir = g_file_info_get_name(pkg_metadata_file_info);
+        std::string filename = pkg_metadata_file_info.path().native();
+        const char *dir = filename.c_str();
         dashes = 0;
 
-        if (strcmp(dir, pkg_fullname) == 0)
+        if (dir == pkg_fullname)
         {
             ret = Info::installed;
         }
         else
         {
-            for (it = dir + strlen(dir); it != dir; --it)
+            for (it = dir + filename.size(); it != dir; --it)
             {
                 if (*it == '-')
                 {
@@ -251,15 +237,11 @@ Info is_installed(const char *pkg_fullname)
                 ret = Info::updating;
             }
         }
-        g_object_unref(pkg_metadata_file_info);
-
         if (ret != Info::installing) /* If installed */
         {
             break;
         }
     }
-    g_object_unref(pkg_metadata_enumerator);
-    g_object_unref(pkg_metadata_dir);
 
     return ret;
 }