simplify Extract_filename() and Extract_path()

src/factory.c

@@ -2385,7 +2385,7 @@ void Run_script(const char *script_subdirectory, const char *script_filename)
   
   // This chdir is for the script's sake. Grafx2 itself will (try to)
   // not rely on what is the system's current directory.
-  path = Extract_path(NULL, Last_run_script);
+  path = Extract_path(Last_run_script);
   Change_directory(path);
   free(path);
 

src/filesel.c

@@ -2265,7 +2265,7 @@ byte Button_Load_or_Save(T_Selector_settings *settings, byte load, T_IO_Context
           }
           else
           {
-            previous_directory = Extract_filename(NULL, Selector->Directory);
+            previous_directory = Extract_filename(Selector->Directory);
           }
 
           free(Selector->Directory);

src/io.c

@@ -326,37 +326,26 @@ char * Filepath_append_to_dir(const char * dir, const char * filename)
 }
 
 // Récupère la partie "nom de file seul" d'un chemin
-char * Extract_filename(char *dest, const char *source)
+char * Extract_filename(const char *source)
 {
   const char * position = Find_last_separator(source);
 
-  if (dest != NULL)
-  {
-    if (position)
-      strcpy(dest,position+1);
-    else
-      strcpy(dest,source);
-    return dest;
-  }
-  else
-  {
   if (position)
     return strdup(position + 1);
   else
     return strdup(source);
-  }
 }
 
 // Récupère la partie "répertoire+/" d'un chemin.
-char * Extract_path(char *dest, const char *source)
+char * Extract_path(const char *source)
 {
   char * position;
   char * path;
 
-  path = Realpath(source, dest);
+  path = Realpath(source, NULL);
   if (path == NULL)
   {
-    GFX2_Log(GFX2_ERROR, "Realpath(\"%s\", %p) failed !\n", source, dest);
+    GFX2_Log(GFX2_ERROR, "Realpath(\"%s\") failed !\n", source);
     return NULL;
   }
   position = Find_last_separator(path);
@@ -365,10 +354,6 @@ char * Extract_path(char *dest, const char *source)
   else
   {
     size_t len = strlen(path);
-    if (dest != NULL)
-      strcpy(path + len, PATH_SEPARATOR);
-    else
-    {
     char * tmp = realloc(path, len + strlen(PATH_SEPARATOR) + 1);
     if (tmp != NULL)
     {
@@ -381,7 +366,6 @@ char * Extract_path(char *dest, const char *source)
                (unsigned long)(len + strlen(PATH_SEPARATOR) + 1));
     }
   }
-  }
   return path;
 }
 

src/io.h

@@ -90,9 +90,9 @@ unsigned long File_length_file(FILE * file);
 /// Construct full file path
 char * Filepath_append_to_dir(const char * dir, const char * filename);
 /// Extracts the filename part from a full file name.
-char * Extract_filename(char *dest, const char *source);
+char * Extract_filename(const char *source);
 /// Extracts the directory from a full file name.
-char * Extract_path(char *dest, const char *source);
+char * Extract_path(const char *source);
 
 /// Finds the rightmost path separator in a full filename. Used to separate directory from file.
 char * Find_last_separator(const char * str);

src/loadsave.c

@@ -1311,9 +1311,9 @@ static void Load_ClipBoard_Image(T_IO_Context * context)
           if (File_exists(filename))
           {
             free(context->File_name);
-            context->File_name = Extract_filename(NULL, filename);
+            context->File_name = Extract_filename(filename);
             free(context->File_directory);
-            context->File_directory = Extract_path(NULL, filename);
+            context->File_directory = Extract_path(filename);
             context->Format = DEFAULT_FILEFORMAT;
           }
           else
@@ -1597,9 +1597,9 @@ static void Load_ClipBoard_Image(T_IO_Context * context)
         if (File_exists(p))
         {
           free(context->File_name);
-          context->File_name = Extract_filename(NULL, p);
+          context->File_name = Extract_filename(p);
           free(context->File_directory);
-          context->File_directory = Extract_path(NULL, p);
+          context->File_directory = Extract_path(p);
           context->Format = DEFAULT_FILEFORMAT;
         }
         else

src/setup.c

@@ -111,7 +111,7 @@ char * Get_program_directory(const char * argv0)
     {
       path[path_len] = '\0';  // add null terminating char
       GFX2_Log(GFX2_DEBUG, "binary path resolved to : %s\n", path);
-      program_dir = Extract_path(NULL, path);
+      program_dir = Extract_path(path);
     }
     else
     {
@@ -128,7 +128,7 @@ char * Get_program_directory(const char * argv0)
         if (tmp != NULL)
         {
           snprintf(tmp, len, "%s/%s", current_dir, argv0);
-          program_dir = Extract_path(NULL, tmp);
+          program_dir = Extract_path(tmp);
           free(tmp);
         }
         free(current_dir);
@@ -136,15 +136,15 @@ char * Get_program_directory(const char * argv0)
     }
   }
   else
-    program_dir = Extract_path(NULL, argv0);
+    program_dir = Extract_path(argv0);
   #elif defined(__HAIKU__)
-  program_dir = Extract_path(NULL, haiku_get_app_path());
+  program_dir = Extract_path(haiku_get_app_path());
   
   // Others: The part of argv[0] before the executable name.    
   // Keep the last \ or /.
   // On Windows, Mingw32 already provides the full path in all cases.
   #else
-  program_dir = Extract_path(NULL, argv0);
+  program_dir = Extract_path(argv0);
   #endif
   if (program_dir == NULL)
   {

src/tests/testio.c

@@ -280,10 +280,10 @@ int Test_File_exists(char * errmsg)
     return 0;
   }
   data.result = 0;
-  data.filename = Extract_filename(NULL, path);
+  data.filename = Extract_filename(path);
   if (data.filename == NULL)
   {
-    snprintf(errmsg, ERRMSG_LENGTH, "Extract_filename(NULL, \"%s\") FAILED", path);
+    snprintf(errmsg, ERRMSG_LENGTH, "Extract_filename(\"%s\") FAILED", path);
     return 0;
   }
   GFX2_Log(GFX2_DEBUG, "Listing directory with For_each_directory_entry(\"%s\"):\n", tmpdir);