core: add command /sys to show resource limits and usage

ChangeLog.adoc

@@ -15,6 +15,7 @@ For a list of important changes that require manual actions, please look at rele
 
 New features::
 
+  * core: add command `/sys` to show resource limits and usage
   * core: ignore key bindings with empty command
   * core: add support of quotes in commands `/key bind` and `/key bindctxt`
   * core: evaluate command given to `/repeat` with contextual variables (issue #2007)

doc/en/weechat_dev.en.adoc

@@ -146,6 +146,7 @@ WeeChat "core" is located in following directories:
 |    wee-utf8.c                   | UTF-8 functions.
 |    wee-util.c                   | Some other functions.
 |    wee-version.c                | Functions for WeeChat version.
+|    wee-sys.c                    | System functions.
 |    weechat.c                    | Main functions: command line options, startup.
 |    hook/                        | Hook functions.
 |       wee-hook-command-run.c    | Hook "command_run".
@@ -420,6 +421,7 @@ WeeChat "core" is located in following directories:
 |          test-core-url.cpp          | Tests: URLs.
 |          test-core-utf8.cpp         | Tests: UTF-8.
 |          test-core-util.cpp         | Tests: utility functions.
+|          test-core-sys.cpp          | Tests: system functions.
 |       gui/                          | Root of unit tests for interfaces.
 |          test-gui-bar-window.cpp    | Tests: bar window functions.
 |          test-gui-buffer.cpp        | Tests: buffer functions.

doc/fr/weechat_dev.fr.adoc

@@ -148,6 +148,7 @@ Le cœur de WeeChat est situé dans les répertoires suivants :
 |    wee-utf8.c                   | Fonctions UTF-8.
 |    wee-util.c                   | Quelques autres fonctions utilitaires.
 |    wee-version.c                | Fonctions pour la version de WeeChat.
+|    wee-sys.c                    | Fonctions système.
 |    weechat.c                    | Fonctions principales : options de ligne de commande, démarrage.
 |    hook/                        | Hook functions.
 |       wee-hook-command-run.c    | Hook "command_run".
@@ -422,6 +423,7 @@ Le cœur de WeeChat est situé dans les répertoires suivants :
 |          test-core-url.cpp          | Tests : URLs.
 |          test-core-utf8.cpp         | Tests : UTF-8.
 |          test-core-util.cpp         | Tests : fonctions utiles.
+|          test-core-sys.cpp          | Tests : fonctions système.
 |       gui/                          | Racine des tests unitaires pour les interfaces.
 |          test-gui-bar-window.cpp    | Tests : fonctions de fenêtres de barre.
 |          test-gui-buffer.cpp        | Tests : fonctions de tampons.

doc/ja/weechat_dev.ja.adoc

@@ -158,6 +158,8 @@ WeeChat "core" は以下のディレクトリに配置されています:
 |    wee-utf8.c                   | UTF-8 関数
 |    wee-util.c                   | その他の関数
 |    wee-version.c                | WeeChat バージョンについての関数
+// TRANSLATION MISSING
+|    wee-sys.c                    | System functions.
 |    weechat.c                    | 主要関数: コマンドラインオプション、起動
 |    hook/                        | フック関数
 |       wee-hook-command-run.c    | "command_run" フック
@@ -452,6 +454,8 @@ WeeChat "core" は以下のディレクトリに配置されています:
 |          test-core-url.cpp          | テスト: URL
 |          test-core-utf8.cpp         | テスト: UTF-8
 |          test-core-util.cpp         | テスト: ユーティリティ関数
+// TRANSLATION MISSING
+|          test-core-sys.cpp          | Tests: system functions.
 |       gui/                          | インターフェースの単体テストを収める最上位ディレクトリ
 // TRANSLATION MISSING
 |          test-gui-bar-window.cpp    | Tests: bar window functions.

doc/sr/weechat_dev.sr.adoc

@@ -148,6 +148,8 @@ WeeChat „језгро” се налази у следећим директо
 |    wee-utf8.c                   | UTF-8 фунцкије.
 |    wee-util.c                   | Неке друге функције.
 |    wee-version.c                | Функције за WeeChat верзију.
+// TRANSLATION MISSING
+|    wee-sys.c                    | System functions.
 |    weechat.c                    | Основне функције: опције командне линије, покретање.
 |    hook/                        | Функције кука.
 |       wee-hook-command-run.c    | Кука "command_run".
@@ -422,6 +424,8 @@ WeeChat „језгро” се налази у следећим директо
 |          test-core-url.cpp          | Тестови: URL адресе.
 |          test-core-utf8.cpp         | Тестови: UTF-8.
 |          test-core-util.cpp         | Тестови: помоћне функције.
+// TRANSLATION MISSING
+|          test-core-sys.cpp          | Tests: system functions.
 |       gui/                          | Корен unit тестова интерфејса.
 |          test-gui-bar-window.cpp    | Тестови: функције прозора траке.
 |          test-gui-buffer.cpp        | Тестови: бафер функције.

po/srcfiles.cmake

@@ -101,6 +101,8 @@ SET(WEECHAT_SOURCES
 ./src/core/wee-util.h
 ./src/core/wee-version.c
 ./src/core/wee-version.h
+./src/core/wee-sys.c
+./src/core/wee-sys.h
 ./src/gui/curses/gui-curses-bar-window.c
 ./src/gui/curses/gui-curses-bar-window.h
 ./src/gui/curses/gui-curses-chat.c

src/core/CMakeLists.txt

@@ -53,6 +53,7 @@ set(LIB_CORE_SRC
   wee-utf8.c wee-utf8.h
   wee-util.c wee-util.h
   wee-version.c wee-version.h
+  wee-sys.c wee-sys.h
   hook/wee-hook-command-run.c hook/wee-hook-command-run.h
   hook/wee-hook-command.c hook/wee-hook-command.h
   hook/wee-hook-completion.c hook/wee-hook-completion.h

src/core/wee-command.c

@@ -64,6 +64,7 @@
 #include "wee-utf8.h"
 #include "wee-util.h"
 #include "wee-version.h"
+#include "wee-sys.h"
 #include "../gui/gui-bar.h"
 #include "../gui/gui-bar-item.h"
 #include "../gui/gui-bar-item-custom.h"
@@ -7774,6 +7775,35 @@ COMMAND_CALLBACK(window)
     COMMAND_ERROR;
 }
 
+/*
+ * Callback for command "/sys": system actions.
+ */
+
+COMMAND_CALLBACK(sys)
+{
+    /* make C compiler happy */
+    (void) pointer;
+    (void) data;
+    (void) buffer;
+
+    COMMAND_MIN_ARGS(2, "");
+
+    if (string_strcmp (argv[1], "get") == 0)
+    {
+        COMMAND_MIN_ARGS(2, "get");
+
+        if (string_strcmp (argv[2], "rlimit") == 0)
+            sys_display_rlimit ();
+        else if (string_strcmp (argv[2], "rusage") == 0)
+            sys_display_rusage ();
+        else
+            COMMAND_ERROR;
+        return WEECHAT_RC_OK;
+    }
+
+    COMMAND_ERROR;
+}
+
 /*
  * Hooks WeeChat core commands.
  */
@@ -9456,6 +9486,16 @@ command_init ()
         " || bare"
         " || %(windows_numbers)",
         &command_window, NULL, NULL);
+    hook_command (
+        NULL, "sys",
+        N_("system actions"),
+        N_("get rlimit|rusage"),
+        N_("   get: display system info\n"
+           "rlimit: display resource limits "
+           "(see /help weechat.startup.sys_rlimit and man getrlimit)\n"
+           "rusage: display resource usage (see man getrusage)"),
+        "get rlimit|rusage",
+        &command_sys, NULL, NULL);
 }
 
 /*

src/core/wee-config.c

@@ -44,11 +44,11 @@
 #include "wee-log.h"
 #include "wee-network.h"
 #include "wee-utf8.h"
-#include "wee-util.h"
 #include "wee-list.h"
 #include "wee-proxy.h"
 #include "wee-string.h"
 #include "wee-version.h"
+#include "wee-sys.h"
 #include "../gui/gui-bar.h"
 #include "../gui/gui-bar-item.h"
 #include "../gui/gui-bar-item-custom.h"
@@ -382,7 +382,7 @@ config_change_sys_rlimit (const void *pointer, void *data,
     (void) option;
 
     if (gui_init_ok)
-        util_setrlimit ();
+        sys_setrlimit ();
 }
 
 /*
@@ -1482,7 +1482,7 @@ config_weechat_init_after_read ()
 {
     int context;
 
-    util_setrlimit ();
+    sys_setrlimit ();
 
     gui_buffer_notify_set_all ();