src/util/* include/base.h makes available util_concat(), util_read_file()

introduces the enum axis { X_AXIS, Y_AXIS, Z_AXIS }

The use of util_concat() modifies the memory indirect leaks (not direct).
==23744== LEAK SUMMARY:
==23744==    definitely lost: 5,008 bytes in 54 blocks
==23744==    indirectly lost: 16,151 bytes in 673 blocks

Doc minor modifications (use __function_name__ instead of "function name").

include/base.h

@@ -1,25 +1,27 @@
-/*
- *      Gem-graph OpenGL experiments
- *
- *      Desc: Base header
- *
- *  Copyright (C) 2023 Arthur Menges <arthur.menges@a-lec.org>
- *  Copyright (C) 2023 Adrien Bourmault <neox@a-lec.org>
+/**
+ * @file
+ * base header
  *
  * This file is part of Gem-graph.
  *
- *  This program is free software: you can redistribute it and/or modify
- *  it under the terms of the GNU Affero General Public License as published by
- *  the Free Software Foundation, either version 3 of the License, or
- *  (at your option) any later version.
+ * @cond LICENSE
+ * Copyright © 2021 Libre en Communs <contact@a-lec.org>
+ * Copyright © 2021-2024 Adrien Bourmault <neox@a-lec.org>
+ * Copyright © 2021-2024 Jean Sirmai <jean@a-lec.org>
  *
- *  This program is distributed in the hope that it will be useful,
- *  but WITHOUT ANY WARRANTY; without even the implied warranty of
- *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- *  GNU Affero General Public License for more details.
+ * This program is free software: you can redistribute it and/or modify it under
+ * the terms of the GNU Affero General Public License as published by the Free
+ * Software Foundation, either version 3 of the License, or (at your option) any
+ * later version.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+ * FOR A PARTICULAR PURPOSE. See the GNU Affero General Public License for more
+ * details.
  *
  * You should have received a copy of the GNU Affero General Public License
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ * @endcond
  */
 
 #pragma once
@@ -35,33 +37,39 @@
 #include <sys/stat.h>
 #include <unistd.h>
 #include <glib-2.0/glib.h>
+
 //#define G_APPLICATION_DEFAULT_FLAGS 0
 
-enum { X_AXIS, Y_AXIS, Z_AXIS,    N_AXIS };     //     < used by :   graph_area.h
-enum { HOME_MODE, RUN_MODE, EDIT_MODE, PRESENTATION_MODE,    N_MODE };  // Gem-graph modes
-struct arrow_t { uint load; uint site; uint x; uint y; uint z; }; // describes an arrow
-static inline char *read_file(char *filename);  //     < used by :   init.c
+struct arrow_t { uint load; uint site; uint x; uint y; uint z; };
+static inline char *read_file(char *filename);
 
-/* I'm standing on Earth (or any spinning spheroid) and looking towards its North pole, then :
-      X - X   =   EAST   - WEST    =   rouge - cyan
-      Y - Y   =   ZENITH - NADIR   =   vert  - magenta (fuschia)
-      Z - Z   =   NORTH  - SOUTH   =   bleu  - jaune                                        */
-
-#define EAST   0 // + x  rouge
-#define WEST   1 // - x  cyan
-#define ZENITH 2 // + y  vert
-#define NADIR  3 // - y  magenta
-#define SOUTH  4 // + z  bleu
-#define NORTH  5 // - z  jaune
-
-
-/*
- * char *read_file(char *filename)  reads a file from filename into a provided buffer
+/**
+ * I'm standing on Earth (or any spinning spheroid)
+ * and looking towards its North pole,
  *
- * @param   filename, file name
- *          contents, target ptr
+ * then :
  *
- * @return  void
+ *       X - X   =   EAST   - WEST    =   red - cyan
+ *       Y - Y   =   ZENITH - NADIR   =   green  - magenta (fuschia)
+ *       Z - Z   =   SOUTH  - NORTH   =   blue  - yellow
+ */
+enum axis { X_AXIS, Y_AXIS, Z_AXIS,    N_AXIS };
+
+
+#define EAST   0 /**< +x  red */
+#define WEST   1 /**< -x  cyan */
+#define ZENITH 2 /**< +y  green */
+#define NADIR  3 /**< -y  magenta or fuschia */
+#define SOUTH  4 /**< +z  blue */
+#define NORTH  5 /**< -z  yellow */
+
+
+/**
+ * char *read_file(char *filename)
+ *
+ * reads a file from filename into a provided buffer
+ *
+ * @param   *filename
  */
 static inline char *read_file(char *filename)
 {

include/fsm.h

@@ -219,8 +219,8 @@ void fsm_clear_log     (struct fsm_log_t *);
 void fsm_clear_log_unit (struct fsm_log_unit_t *);
 
 void fsm_add_log_event (struct fsm_log_t *gg_logs,
-                        char *file_source,
-                        char *function_source,
+                        const char *file_source,
+                        const char *function_source,
                         char *string_value);
 
 int  fsm_get_log_length(struct fsm_log_t *);
@@ -236,12 +236,12 @@ long fsm_remove_log    (struct fsm_log_t *gg_logs,
 
 void fsm_add_log       (int severity,
                         int source,
-                        char *file_source,
-                        char *function_source,
+                        const char *file_source,
+                        const char *function_source,
                         char *string_value);
 
 void fsm_relay_init_log();
 void fsm_relay_close_log();
 
-void fsm_init (char *initial_message_from_main);
-void fsm_close (char *final_message_from_main);
+void fsm_init();
+void fsm_close();

include/util.h

@@ -0,0 +1,37 @@
+/**
+ * @file
+ * utilities header
+ *
+ * This file is part of Gem-graph.
+ *
+ * @cond LICENSE
+ * Copyright © 2021 Libre en Communs <contact@a-lec.org>
+ * Copyright © 2021-2024 Adrien Bourmault <neox@a-lec.org>
+ * Copyright © 2021-2024 Jean Sirmai <jean@a-lec.org>
+ *
+ * This program is free software: you can redistribute it and/or modify it under
+ * the terms of the GNU Affero General Public License as published by the Free
+ * Software Foundation, either version 3 of the License, or (at your option) any
+ * later version.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+ * FOR A PARTICULAR PURPOSE. See the GNU Affero General Public License for more
+ * details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ * @endcond
+ */
+
+
+#pragma once
+#include <stdbool.h>
+#include <stddef.h>
+#include <gtk-4.0/gtk/gtk.h>
+
+#include "../include/fsm.h"
+
+char *util_read_file (char *filename);
+char *util_concat (const char *str, ...);
+

src/fsm/control.c

@@ -140,16 +140,16 @@ static void fsm_structures_close()
  *
  * @param *initial_info_from_main
  */
-void fsm_init (char *initial_info_from_main)
+void fsm_init()
 {
     fsm_relay_init_log();
 
-    fsm_add_log (INFO, MAIN, "main", initial_info_from_main,
+    fsm_add_log (INFO, MAIN, "fsm/control", __func__,
                  "👋️ (☕️)  Hi everybody ! Here is Gem-Graph.");
 
-    fsm_add_log (INFO, FSM, "fsm/control", "fsm initialisation", "has began ✍️");
+    fsm_add_log (INFO, FSM, "fsm/control", __func__, "has began ✍️");
     fsm_structures_init();
-    fsm_add_log (INFO, FSM, "fsm/control", "fsm initialisation", "has ended 😇️");
+    fsm_add_log (INFO, FSM, "fsm/control", __func__, "has ended 😇️");
 }
 
 /**
@@ -181,16 +181,17 @@ void fsm_init (char *initial_info_from_main)
  *
  * @param *closing_info_from_main
  */
-void fsm_close (char *closing_info_from_main)
+void fsm_close()
 {
-    fsm_add_log (INFO, FSM, "fsm/control", "fsm closing", "has began");
+    fsm_add_log (INFO, FSM, "fsm/control", __func__, "has began");
     fsm_structures_close();
-    fsm_add_log (INFO, FSM, "fsm/control", "fsm closing", "has ended");
+    fsm_add_log (INFO, FSM, "fsm/control", __func__, "has ended");
 
-    fsm_add_log (INFO, MAIN, "main", closing_info_from_main,
+    fsm_add_log (INFO, MAIN, "fsm/control", __func__,
                  "👋️😄️  That'all folks !");
 
     fsm_relay_close_log(); /**< fsm_clear_log(() can't be called from here
                              * because static fsm_log_struct gg_logs
                              * is in src/fsm/log/manager.c */
 }
+

src/fsm/log/manager.c

@@ -94,8 +94,8 @@ static struct fsm_log_t gg_logs = { 0 };
  */
 void fsm_add_log (int severity,
                   int source,
-                  char *file_source,
-                  char *function_source,
+                  const char *file_source,
+                  const char *function_source,
                   char *string_value)
 {
     if

src/fsm/log/oper.c

@@ -116,8 +116,8 @@ void fsm_clear_log_unit (struct fsm_log_unit_t *unit)
  * @param *string_value
  */
 void fsm_add_log_event (struct fsm_log_t *gg_logs,
-                        char *file_source,
-                        char *function_source,
+                        const char *file_source,
+                        const char *function_source,
                         char *string_value)
 {
     struct timeval tv;

src/main.c

@@ -63,15 +63,15 @@ int main (int argc, char **argv)
     GtkApplication *app;
     int status;
 
-    fsm_init ("first instruction / first log");
+    fsm_init();
 
-    fsm_add_log (INFO, MAIN, "main",
+    fsm_add_log (INFO, MAIN, __func__,
                  "*app = gtk_application_new()",
                  "| 👉️  trigger app initialization");
 
     app = gtk_application_new ("org.gem-graph", G_APPLICATION_DEFAULT_FLAGS);
 
-    fsm_add_log (INFO, MAIN, "main",
+    fsm_add_log (INFO, MAIN, __func__,
                  "g signal connect (activate)",
                  "| 👉️  windows creation requested");
 
@@ -80,9 +80,9 @@ int main (int argc, char **argv)
 
     status = g_application_run (G_APPLICATION (app), argc, argv);
     g_object_unref (app);
-    fsm_add_log (INFO, MAIN, "main", "g_object unref (app)", "| 👌️  bye bye app !");
+    fsm_add_log (INFO, MAIN, __func__, "g_object unref (app)", "| 👌️  bye bye app !");
 
-    fsm_close("last instruction / last log");
+    fsm_close();
 
     return status;
 }

src/util/io.c

@@ -0,0 +1,64 @@
+/**
+ * @file
+ * input output
+ *
+ * This file is part of Gem-graph.
+ *
+ * @cond LICENSE
+ * Copyright © 2021 Libre en Communs <contact@a-lec.org>
+ * Copyright © 2021-2024 Adrien Bourmault <neox@a-lec.org>
+ * Copyright © 2021-2024 Jean Sirmai <jean@a-lec.org>
+ *
+ * This program is free software: you can redistribute it and/or modify it under
+ * the terms of the GNU Affero General Public License as published by the Free
+ * Software Foundation, either version 3 of the License, or (at your option) any
+ * later version.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+ * FOR A PARTICULAR PURPOSE. See the GNU Affero General Public License for more
+ * details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ * @endcond
+ */
+
+
+#include "../../include/util.h"
+#include "../../include/base.h"
+
+
+/**
+ * reads a file from filename into a provided buffer
+ *
+ * @param *filename
+ *
+ * @returns char
+ */
+char *util_read_file(char *filename)
+{
+    int fd;
+    int filesize;
+    char *contents;
+
+    fd = open(filename, O_RDONLY);
+    if (fd < 0) {
+        printf("Couldn't read file: %s\n",filename);
+        return NULL;
+    }
+
+    filesize = lseek(fd, 0, SEEK_END) + 1 ;
+    contents = g_malloc(filesize * sizeof(char));
+    assert (contents);
+
+    lseek(fd, 0, SEEK_SET);
+    read(fd,contents,filesize);
+
+    contents[filesize-1] = '\0';
+
+    close(fd);
+
+    return contents;
+}
+

src/util/strings.c

@@ -0,0 +1,131 @@
+/**
+ * @file
+ * concat
+ *
+ * @cond LICENSE
+ * This file is part of Gem-graph.
+ *
+ * Copyright © 2021 Libre en Communs <contact@a-lec.org>
+ * Copyright © 2021-2024 Adrien Bourmault <neox@a-lec.org>
+ * Copyright © 2021-2024 Jean Sirmai <jean@a-lec.org>
+ *
+ * This program is free software: you can redistribute it and/or modify it under
+ * the terms of the GNU Affero General Public License as published by the Free
+ * Software Foundation, either version 3 of the License, or (at your option) any
+ * later version.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+ * FOR A PARTICULAR PURPOSE. See the GNU Affero General Public License for more
+ * details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ * @endcond
+ */
+
+
+
+
+#include <stdlib.h>
+#include <stdarg.h>
+#include <string.h>
+
+/**
+ * Programmers using the strcat function can easily be recognized as lazy and
+ * reckless 🤨️ (quoted from:  The GNU C Library (glibc) manual - 5.5
+ * Concatenating Strings).
+ *
+ * Whenever a programmer feels the need to use strcat she or he should think twice
+ * and look through the program to see whether the code cannot be rewritten
+ * to take advantage of already calculated results.
+ * The related functions strlcat, strncat, wcscat and wcsncat are almost always unnecessary, too.
+ * Again: it is almost always unnecessary to use functions like strcat. 😄️
+ *
+ * Before calling vprintf or the other functions listed in this section,
+ * you must call va_start (see Variadic Functions) to initialize a pointer to the variable arguments.
+ * Then you can call va_arg to fetch the arguments that you want to handle yourself.
+ * This advances the pointer past those arguments.
+ *
+ * Once your va_list pointer is pointing at the argument of your choice, you are ready to call vprintf.
+ * That argument and all subsequent arguments that were passed to your function
+ * are used by vprintf along with the template that you specified separately.
+ *
+ * ---
+ *
+ * A.2 Variadic Functions
+ *
+ * ISO C defines a syntax for declaring a function to take a variable number or type of arguments.
+ * (Such functions are referred to as varargs functions or variadic functions.)
+ * However, the language itself provides no mechanism for such functions to access
+ * their non-required arguments; instead, you use the variable arguments macros defined in stdarg.h.
+ *
+ * This section describes how to declare variadic functions, how to write them,
+ * and how to call them properly.
+ *
+ * https://sourceware.org/glibc/manual/latest/html_mono/libc.html#Variadic-Prototypes
+ *
+ * see (in glibc/manual) > ellipsis (‘…’) A.2.2.2 Receiving the Argument Values
+ *
+ * ---
+ *
+ * NB  'at ref'  desactivated  TODO
+ *
+ * @callergraph
+ * @see on_app_activation()
+ *
+ * @param *str
+ * @param ...
+ *
+ * @return *
+ */
+char *
+util_concat (const char *str, ...)
+{
+  size_t allocated = 100;
+  char *result = malloc (allocated);
+
+  if (result != NULL)
+    {
+      va_list ap;
+      size_t resultlen = 0;
+      char *newp;
+
+      va_start (ap, str);
+
+      for (const char *s = str; s != NULL; s = va_arg (ap, const char *))
+        {
+          size_t len = strlen (s);
+
+          /* Resize the allocated memory if necessary.  */
+          if (resultlen + len + 1 > allocated)
+            {
+              allocated += len;
+              newp = reallocarray (result, allocated, 2);
+              allocated *= 2;
+              if (newp == NULL)
+                {
+                  free (result);
+                  return NULL;
+                }
+              result = newp;
+            }
+
+          memcpy (result + resultlen, s, len);
+          resultlen += len;
+        }
+
+      /* Terminate the result string.  */
+      result[resultlen++] = '\0';
+
+      /* Resize memory to the optimal size.  */
+      newp = realloc (result, resultlen);
+      if (newp != NULL)
+        result = newp;
+
+      va_end (ap);
+    }
+
+  return result;
+}
+

src/widget/main_window/design.c

@@ -42,7 +42,7 @@
 void widget_design_main_window (GtkWindow *main_window, GtkApplication *app)
 {
     fsm_add_log (INFO, TOPBAR, "widget/main_window/design",
-                               "main window", "start of design");
+                               __func__, "start of design");
 
     /* GtkWidget *topbar = GTK_WIDGET (gtk_header_bar_new ()); */
 
@@ -58,5 +58,5 @@ void widget_design_main_window (GtkWindow *main_window, GtkApplication *app)
 //    g_object_unref (e_coli);
 
     fsm_add_log (INFO, TOPBAR, "widget/main_window/design",
-                               "main window", "ready for presentation");
+                               __func__, "end of design  ->  present");
 }

src/widget/manager.c

@@ -32,6 +32,7 @@
 
 #include "../../include/widget.h"
 #include "../../include/fsm.h"
+#include "../../include/util.h"
 
 #include <stdio.h>
 
@@ -57,7 +58,7 @@ static GtkWindow *window;
  */
 void on_app_activation (GtkApplication *app)
 {
-    fsm_add_log (INFO, WIDGETS, "widget/manager", "app activation()", "has began");
+    fsm_add_log (INFO, WIDGETS, "widget/manager", __func__, "has began");
 
     //  on_windows_activation() is in: widget/manager  NOT in:  src/signal
     //  g_application_activate (G_APPLICATION (app));   <   how ?   >   in main is
@@ -82,13 +83,9 @@ void on_app_activation (GtkApplication *app)
 
     g_signal_connect(window, "close-request", G_CALLBACK (on_window_close_request), (void *)(long long)window_int_id);
 
-    //printf ("gtk_application_window_id = %s = %d\n", window_char_id, window_int_id);
-
-    fsm_add_log (INFO, WIDGETS, "widget/manager", "gtk_application_window_get_id",
-                 window_char_id);//"sprintf(window_id,...)  <<  fails.  Why ?");
-
-    //printf ("gtk_application_window_get_id (main_window) = %d\n",
-            //gtk_application_window_get_id (GTK_APPLICATION_WINDOW (main_window)));
+    char *temp = util_concat ("window_get_id = ", window_char_id, NULL);
+    fsm_add_log (INFO, WIDGETS, "widget/manager", __func__, temp);
+    free(temp);
 
     widget_design_main_window   (window, app);
 
@@ -117,14 +114,14 @@ void on_app_activation (GtkApplication *app)
     g_action_map_add_action (G_ACTION_MAP (app), G_ACTION (act_b));
     g_signal_connect (act_b, "activate", G_CALLBACK (action_b), app2);*/
 
-    fsm_add_log (INFO, WIDGETS, "widget/manager", "app activation()",
+    fsm_add_log (INFO, WIDGETS, "widget/manager", __func__,
                        "has ended 🧐️ | 👉️ a new session starts");
 }
 
 gboolean on_window_close_request (GtkWindow *window, gpointer user_data)
 {
 
-    fsm_add_log (INFO, WIDGETS, "widget/manager", "window close request()",
+    fsm_add_log (INFO, WIDGETS, "widget/manager", __func__,
                        "freeing all ressources !");
 
     // free the only child