set up get changed files

4ed.cpp

@@ -390,7 +390,7 @@ COMMAND_DECL(save){
     USE_VIEW(view);
     REQ_FILE(file, view);
     
-    if (!file->is_dummy && file_is_ready(file) && buffer_needs_save(file)){
+    if (!file->is_dummy && file_is_ready(file) && buffer_can_save(file)){
         save_file(system, &models->mem, file);
     }
 }
@@ -1680,6 +1680,38 @@ App_Step_Sig(app_step){
         dest->size = eol_convert_in(dest->str, clipboard.str, clipboard.size);
     }
     
+    // NOTE(allen): check files are up to date
+    {
+        b32 mem_too_small = 0;
+        i32 size = 0;
+        i32 buffer_size = (32 << 10);
+        
+        Partition *part = &models->mem.part;
+        Temp_Memory temp = begin_temp_memory(part);
+        char *buffer = push_array(part, char, buffer_size);
+        
+        Working_Set *working_set = &models->working_set;
+        
+        for (;system->get_file_change(buffer, buffer_size, &mem_too_small, &size);){
+            Assert(!mem_too_small);
+            
+            Editing_File_Canon_Name canon;
+            if (get_canon_name(system, &canon, make_string(buffer, size))){
+                Editing_File *file = working_set_canon_contains(working_set, canon.name);
+                if (file){
+                    if (file->state.ignore_behind_os == 0){
+                        file_mark_behind_os(file);
+                    }
+                    else{
+                        file->state.ignore_behind_os = 0;
+                    }
+                }
+            }
+        }
+        
+        end_temp_memory(temp);
+    }
+    
 #if 0
     // NOTE(allen): check files are up to date
     if (!input->first_step){

4ed_api_implementation.cpp

@@ -1031,7 +1031,7 @@ DOC_SEE(Buffer_Create_Flag)
                 if (system->load_file(handle, buffer, size)){
                     file = working_set_alloc_always(working_set, general);
                     if (file){
-                        buffer_bind_file(general, working_set, file, canon.name);
+                        buffer_bind_file(system, general, working_set, file, canon.name);
                         buffer_bind_name(general, working_set, file, fname);
                         init_normal_file(system, models, file, buffer, size);
                         fill_buffer_summary(&result, file, cmd);

4ed_file.cpp

@@ -144,6 +144,7 @@ struct Editing_File_State{
     Text_Effect paste_effect;
     
     File_Sync_State sync;
+    u32 ignore_behind_os;
     
     File_Edit_Positions edit_pos_space[16];
     File_Edit_Positions *edit_poss[16];
@@ -769,6 +770,18 @@ buffer_needs_save(Editing_File *file){
     return(result);
 }
 
+inline b32
+buffer_can_save(Editing_File *file){
+    b32 result = 0;
+    if (!file->settings.unimportant){
+        if (file->state.sync == SYNC_UNSAVED ||
+            file->state.sync == SYNC_BEHIND_OS){
+            result = 1;
+        }
+    }
+    return(result);
+}
+
 inline b32
 file_is_ready(Editing_File *file){
     b32 result = 0;
@@ -892,7 +905,7 @@ buffer_get_new_name(Working_Set *working_set, Editing_File_Name *name, char *fil
 }
 
 internal void
-buffer_bind_file(General_Memory *general, Working_Set *working_set,
+buffer_bind_file(System_Functions *system, General_Memory *general, Working_Set *working_set,
                  Editing_File *file, String canon_filename){
     Assert(file->name.live_name.size == 0 &&
            file->name.source_path.size == 0 &&
@@ -901,17 +914,19 @@ buffer_bind_file(General_Memory *general, Working_Set *working_set,
     
     file->canon.name = make_fixed_width_string(file->canon.name_);
     copy(&file->canon.name, canon_filename);
+    system->add_listener(file->canon.name_);
     b32 result = working_set_canon_add(general, working_set, file, file->canon.name);
     Assert(result); AllowLocal(result);
 }
 
 internal void
-buffer_unbind_file(Working_Set *working_set, Editing_File *file){
+buffer_unbind_file(System_Functions *system, Working_Set *working_set, Editing_File *file){
     Assert(file->name.live_name.size == 0 &&
            file->name.source_path.size == 0 &&
            file->name.extension.size == 0);
     Assert(file->canon.name.size != 0);
     
+    system->remove_listener(file->canon.name_);
     working_set_canon_remove(working_set, file->canon.name);
     file->canon.name.size = 0;
 }

4ed_file_view.cpp

@@ -788,10 +788,12 @@ file_synchronize_times(System_Functions *system, Editing_File *file){
 internal b32
 save_file_to_name(System_Functions *system, Mem_Options *mem, Editing_File *file, char *filename){
     b32 result = 0;
+    b32 using_actual_filename = 0;
     
     if (!filename){
         terminate_with_null(&file->canon.name);
         filename = file->canon.name.str;
+        using_actual_filename = 1;
     }
     
     if (filename){
@@ -832,6 +834,9 @@ save_file_to_name(System_Functions *system, Mem_Options *mem, Editing_File *file
         }
         
         result = system->save_file(filename, data, size);
+        if (result && using_actual_filename){
+            file->state.ignore_behind_os = 1;
+        }
         
         file_mark_clean(file);
         
@@ -861,9 +866,9 @@ buffer_link_to_new_file(System_Functions *system, General_Memory *general, Worki
     if (get_canon_name(system, &canon_name, filename)){
         buffer_unbind_name(working_set, file);
         if (file->canon.name.size != 0){
-            buffer_unbind_file(working_set, file);
+            buffer_unbind_file(system, working_set, file);
         }
-        buffer_bind_file(general, working_set, file, canon_name.name);
+        buffer_bind_file(system, general, working_set, file, canon_name.name);
         buffer_bind_name(general, working_set, file, filename);
         result = 1;
     }
@@ -3228,7 +3233,7 @@ view_open_file(System_Functions *system, Models *models, View *view, String file
                     
                     file = working_set_alloc_always(working_set, general);
                     
-                    buffer_bind_file(general, working_set, file, canon_name.name);
+                    buffer_bind_file(system, general, working_set, file, canon_name.name);
                     buffer_bind_name(general, working_set, file, filename);
                     
                     i32 size = system->load_size(handle);
@@ -3294,7 +3299,7 @@ view_interactive_new_file(System_Functions *system, Models *models, View *view,
                 
                 file = working_set_alloc_always(working_set, general);
                 
-                buffer_bind_file(general, working_set, file, canon_name.name);
+                buffer_bind_file(system, general, working_set, file, canon_name.name);
                 buffer_bind_name(general, working_set, file, filename);
                 
                 init_normal_file(system, models, file, 0, 0);
@@ -3313,7 +3318,7 @@ kill_file(System_Functions *system, Models *models, Editing_File *file){
     
     if (file && !file->settings.never_kill){
         buffer_unbind_name(working_set, file);
-        buffer_unbind_file(working_set, file);
+        buffer_unbind_file(system, working_set, file);
         file_close(system, &models->mem.general, file);
         working_set_free_file(working_set, file);
         

4ed_system.h

@@ -38,6 +38,9 @@ typedef Sys_Add_Listener_Sig(System_Add_Listener);
 #define Sys_Remove_Listener_Sig(name) b32 name(char *filename)
 typedef Sys_Remove_Listener_Sig(System_Remove_Listener);
 
+#define Sys_Get_File_Change_Sig(name) i32 name(char *buffer, i32 max, b32 *mem_too_small, i32 *required_size)
+typedef Sys_Get_File_Change_Sig(System_Get_File_Change);
+
 #define Sys_Load_Handle_Sig(name) b32 name(char *filename, Plat_Handle *handle_out)
 typedef Sys_Load_Handle_Sig(System_Load_Handle);
 
@@ -209,11 +212,12 @@ typedef INTERNAL_Sys_Debug_Message_Sig(INTERNAL_System_Debug_Message);
 
 struct System_Functions{
     
-    // files (tracked api): 9
+    // files (tracked api): 10
     System_Set_File_List *set_file_list;
     System_Get_Canonical *get_canonical;
     System_Add_Listener *add_listener;  
     System_Remove_Listener *remove_listener;
+    System_Get_File_Change *get_file_change;
     System_Load_Handle *load_handle;
     System_Load_Size *load_size;
     System_Load_File *load_file;

build_all.bat

@@ -26,7 +26,7 @@ popd
 pushd ..\build
 
 REM call "%CODE_DIR%\buildsuper.bat" ..\code\4coder_default_bindings.cpp
-REM call "%CODE_DIR%\buildsuper.bat" ..\code\internal_4coder_tests.cpp
+call "%CODE_DIR%\buildsuper.bat" ..\code\internal_4coder_tests.cpp
 REM call "%CODE_DIR%\buildsuper.bat" ..\code\power\4coder_casey.cpp
 REM call "%CODE_DIR%\buildsuper.bat" ..\4vim\4coder_chronal.cpp
 if %ERRORLEVEL% neq 0 (set FirstError=1)

filetrack/4tech_file_track_win32.c

@@ -684,7 +684,7 @@ expand_track_system_listeners(File_Track_System *system, void *mem, int32_t size
 }
 
 File_Track_Result
-get_change_event(File_Track_System *system, char *buffer, int32_t max){
+get_change_event(File_Track_System *system, char *buffer, int32_t max, int32_t *size){
     File_Track_Result result = FileTrack_NoMoreEvents;
     File_Track_Vars *vars = to_vars_(system);
     
@@ -722,7 +722,9 @@ get_change_event(File_Track_System *system, char *buffer, int32_t max){
                 info = (FILE_NOTIFY_INFORMATION*)(listener_buffer + offset);
                 
                 int32_t len = info->FileNameLength / 2;
-                if (listener.dir_name_len + 1 + len < max){
+                int32_t req_size = listener.dir_name_len + 1 + len;
+                *size = req_size;
+                if (req_size < max){
                     int32_t pos = 0;
                     char *src = listener.dir_name;
                     for (int32_t i = 0; src[i]; ++i, ++pos){
@@ -734,7 +736,6 @@ get_change_event(File_Track_System *system, char *buffer, int32_t max){
                     for (int32_t i = 0; i < len; ++i, ++pos){
                         buffer[pos] = (char)info->FileName[i];
                     }
-                    buffer[pos] = 0;
                     
                     result = FileTrack_Good;
                 }

internal_4coder_tests.cpp

@@ -28,7 +28,6 @@ Allen Webster
 // These tests do not verify the correctness of the output.
 
 CUSTOM_COMMAND_SIG(load_lots_of_files){
-    
     // NOTE(allen): This timing restriction is based on 4GHz and 60fps
     // 4G / 60 ~= 70M  Reserving most of that time for rendering and hopefully idling
     // I set the goal of 10M for all tests.

win32_4ed.cpp

@@ -1210,6 +1210,26 @@ Sys_Remove_Listener_Sig(system_remove_listener){
     return(result);
 }
 
+internal
+Sys_Get_File_Change_Sig(system_get_file_change){
+    i32 result = 0;
+    
+    i32 size = 0;
+    i32 get_result = get_change_event(&win32vars.track, buffer, max, &size);
+    
+    *required_size = size;
+    *mem_too_small = 0;
+    if (get_result == FileTrack_Good){
+        result = 1;
+    }
+    else if (get_result == FileTrack_MemoryTooSmall){
+        *mem_too_small = 1;
+        result = 1;
+    }
+    
+    return(result);
+}
+
 internal
 Sys_Load_Handle_Sig(system_load_handle){
     b32 result = 0;
@@ -1664,6 +1684,7 @@ Win32LoadSystemCode(){
     win32vars.system.get_canonical = system_get_canonical;
     win32vars.system.add_listener = system_add_listener;
     win32vars.system.remove_listener = system_remove_listener;
+    win32vars.system.get_file_change = system_get_file_change;
     win32vars.system.load_handle = system_load_handle;
     win32vars.system.load_size = system_load_size;
     win32vars.system.load_file = system_load_file;