fix set_file_list a bit + add clipboard paste

linux_4ed.cpp

@@ -72,6 +72,10 @@ struct Linux_Vars{
     Mouse_State mouse_data;
 
     String clipboard_contents;
+    String clipboard_outgoing;
+   
+    Atom atom_CLIPBOARD;
+    Atom atom_UTF8_STRING;
 
     void *app_code;
     void *custom;
@@ -89,6 +93,8 @@ struct Linux_Vars{
     Font_Load_System fnt;
 };
 
+#define LINUX_MAX_PASTE_CHARS 0x10000L
+
 globalvar Linux_Vars linuxvars;
 globalvar Application_Memory memory_vars;
 globalvar Exchange exchange_vars;
@@ -180,6 +186,21 @@ Sys_Free_Memory_Sig(system_free_memory){
     LinuxFreeMemory(block);
 }
 
+internal void
+LinuxStringDup(String* str, void* data, size_t size){
+    if(str->memory_size < size){
+        if(str->str){
+            LinuxFreeMemory(str->str);
+        }
+        str->memory_size = size;
+        str->str = (char*)LinuxGetMemory(size);
+        //TODO(inso): handle alloc failure case
+    }
+
+    str->size = size;
+    memcpy(str->str, data, size);
+}
+
 #if (defined(_BSD_SOURCE) || defined(_SVID_SOURCE))
 #define TimeBySt
 #endif
@@ -231,9 +252,11 @@ Sys_Set_File_List_Sig(system_set_file_list){
     i32 count, file_count, size, required_size;
     
     terminate_with_null(&directory);
+
     d = opendir(directory.str);
     if (d){
         count = 0;
+        file_count = 0;
         for (entry = readdir(d);
              entry != 0;
              entry = readdir(d)){
@@ -242,7 +265,6 @@ Sys_Set_File_List_Sig(system_set_file_list){
             for (size = 0; fname[size]; ++size);
             count += size + 1;
         }
-        closedir(d);
 
         required_size = count + file_count * sizeof(File_Info);
         if (file_list->block_size < required_size){
@@ -253,8 +275,7 @@ Sys_Set_File_List_Sig(system_set_file_list){
         file_list->infos = (File_Info*)file_list->block;
         cursor = (char*)(file_list->infos + file_count);
         
-        d = opendir(directory.str);
+        rewinddir(d);
-        if (d){
         info_ptr = file_list->infos;
         for (entry = readdir(d);
             entry != 0;
@@ -263,23 +284,32 @@ Sys_Set_File_List_Sig(system_set_file_list){
             cursor_start = cursor;
             for (; *fname; ) *cursor++ = *fname++;
 
-                // TODO(allen): detect file/folder status
+#ifdef _DIRENT_HAVE_D_TYPE
-                // (also make sure this even GETS folders!!!)
+            if(entry->d_type != DT_UNKNOWN){
+                info_ptr->folder = entry->d_type == DT_DIR;
+            } else
+#endif
+            {
+                struct stat st;
+                if(lstat(entry->d_name, &st) != -1){
+                    info_ptr->folder = S_ISDIR(st.st_mode);
+                } else {
                     info_ptr->folder = 0;
+                }
+            }
+
             info_ptr->filename.str = cursor_start;
             info_ptr->filename.size = (i32)(cursor - cursor_start);
             *cursor++ = 0;
             info_ptr->filename.memory_size = info_ptr->filename.size + 1;
         }
-        }
         closedir(d);
     }
-    closedir(d);
 }
 
 Sys_Post_Clipboard_Sig(system_post_clipboard){
-    // TODO(allen): Implement
+    LinuxStringDup(&linuxvars.clipboard_outgoing, str.str, str.size);
-    AllowLocal(str);
+    XSetSelectionOwner(linuxvars.XDisplay, linuxvars.atom_CLIPBOARD, linuxvars.XWindow, CurrentTime);
 }
 
 Sys_CLI_Call_Sig(system_cli_call){
@@ -573,6 +603,8 @@ LinuxLoadSystemCode(){
     linuxvars.system->internal_sentinel = internal_sentinel;
     linuxvars.system->internal_get_thread_states = internal_get_thread_states;
     linuxvars.system->internal_debug_message = internal_debug_message;
+
+    linuxvars.system->slash = '/';
 }
 
 internal void
@@ -591,7 +623,7 @@ LinuxRedrawTarget(){
     system_acquire_lock(RENDER_LOCK);
     launch_rendering(&linuxvars.target);
     system_release_lock(RENDER_LOCK);
-    glFlush();
+//    glFlush();
     glXSwapBuffers(linuxvars.XDisplay, linuxvars.XWindow);
 }
 
@@ -1258,21 +1290,27 @@ main(int argc, char **argv)
         }
     }
     
+    if (!window_setup_success){
+        fprintf(stderr, "Error creating window.");
+        exit(1);
+    }
+
     XSetICFocus(linuxvars.input_context);
 
-    if (window_setup_success){
+    linuxvars.atom_CLIPBOARD = XInternAtom(linuxvars.XDisplay, "CLIPBOARD", False);
-        linuxvars.app.init(linuxvars.system, &linuxvars.target,
+    linuxvars.atom_UTF8_STRING = XInternAtom(linuxvars.XDisplay, "UTF8_STRING", False);
-                           &memory_vars, &exchange_vars, &linuxvars.key_codes,
-                           linuxvars.clipboard_contents, current_directory,
-                           linuxvars.custom_api);
-
-        LinuxResizeTarget(WinWidth, WinHeight);
 
     Atom WM_DELETE_WINDOW = XInternAtom(linuxvars.XDisplay, "WM_DELETE_WINDOW", False);
     if(WM_DELETE_WINDOW != None){
         XSetWMProtocols(linuxvars.XDisplay, linuxvars.XWindow, &WM_DELETE_WINDOW, 1);
     }
 
+    linuxvars.app.init(linuxvars.system, &linuxvars.target,
+                       &memory_vars, &exchange_vars, &linuxvars.key_codes,
+                       linuxvars.clipboard_contents, current_directory,
+                       linuxvars.custom_api);
+
+    LinuxResizeTarget(WinWidth, WinHeight);
     b32 keep_running = 1;
 
     while(keep_running)
@@ -1399,11 +1437,101 @@ main(int argc, char **argv)
                         keep_running = false;
                     }
                 }break;
+
+                // NOTE(inso): Someone wants us to give them the clipboard data.
+                case SelectionRequest: {
+                    XSelectionRequestEvent request = Event.xselectionrequest;
+
+                    XSelectionEvent response = {};
+                    response.type = SelectionNotify;
+                    response.requestor = request.requestor;
+                    response.selection = request.selection;
+                    response.target = request.target;
+                    response.time = request.time;
+                    response.property = None;
+
+                    //TODO(inso): handle TARGETS negotiation instead of requiring UTF8_STRING
+                    if (
+                        linuxvars.clipboard_outgoing.size &&
+                        request.target == linuxvars.atom_UTF8_STRING &&
+                        request.selection == linuxvars.atom_CLIPBOARD &&
+                        request.property != None &&
+                        request.display &&
+                        request.requestor
+                    ){
+                        XChangeProperty(
+                            request.display,
+                            request.requestor,
+                            request.property,
+                            request.target,
+                            8,
+                            PropModeReplace,
+                            (unsigned char*)linuxvars.clipboard_outgoing.str,
+                            linuxvars.clipboard_outgoing.size
+                        );
+
+                        response.property = request.property;
+                    }
+
+                    XSendEvent(request.display, request.requestor, True, 0, (XEvent*)&response);
+
+                }break;
+
+                // NOTE(inso): Another program is now the clipboard owner.
+                case SelectionClear: {
+                    if(Event.xselectionclear.selection == linuxvars.atom_CLIPBOARD){
+                        linuxvars.clipboard_outgoing.size = 0;
+                    }
+                }break;
+
+                // NOTE(inso): A program is giving us the clipboard data we asked for.
+                case SelectionNotify: {
+                    XSelectionEvent* e = (XSelectionEvent*)&Event;
+                    if(
+                        e->selection == linuxvars.atom_CLIPBOARD &&
+                        e->target == linuxvars.atom_UTF8_STRING &&
+                        e->property != None
+                    ){
+                        Atom type;
+                        int fmt;
+                        unsigned long nitems, bytes_left;
+                        u8 *data;
+
+                        XGetWindowProperty(
+                            linuxvars.XDisplay,
+                            linuxvars.XWindow,
+                            linuxvars.atom_CLIPBOARD,
+                            0L,
+                            LINUX_MAX_PASTE_CHARS/4L,
+                            False,
+                            linuxvars.atom_UTF8_STRING,
+                            &type,
+                            &fmt,
+                            &nitems,
+                            &bytes_left,
+                            &data
+                        );
+
+                        LinuxStringDup(&linuxvars.clipboard_contents, data, nitems);
+                        
+                        XFree(data);
+                    }
+                }break;
             }
 
             PrevEvent = Event;
         }
 
+        // FIXME(inso): is getting the clipboard every frame a bad idea?
+        XConvertSelection(
+            linuxvars.XDisplay,
+            linuxvars.atom_CLIPBOARD,
+            linuxvars.atom_UTF8_STRING,
+            linuxvars.atom_CLIPBOARD,
+            linuxvars.XWindow,
+            CurrentTime
+        );
+
         b32 redraw = 1;
 
         Key_Input_Data input_data;
@@ -1438,7 +1566,6 @@ main(int argc, char **argv)
         linuxvars.mouse_data.right_button_pressed = 0;
         linuxvars.mouse_data.right_button_released = 0;
     }
-    }
 }
 
 // BOTTOM