Ticket #46 (mcedit: check POSIX newline at end of file)

* added warning dialog (showed before save/save as)
    * added option "editor_check_new_line"
    * changed dialog 'Edit Save Mode' (added check box 'Check POSIX new line')

Signed-off-by: Ilia Maslakov <il.smind@gmail.com>

    * Redesing of 'Edit Save Mode' dialog.
    * Added hotkeys in 'Edit Save Mode' dialog.
    * Modified warning message, minor optimization.

Signed-off-by: Andrew Borodin <aborodin@vmail.ru>

edit/edit-impl.h

@@ -319,7 +319,6 @@ typedef enum {
 extern int option_max_undo;
 extern int option_auto_syntax;
 extern char *option_syntax_type;
-extern int editor_option_check_nl_at_eof;
 
 extern int option_edit_right_extreme;
 extern int option_edit_left_extreme;

edit/edit.c

@@ -81,6 +81,7 @@ int option_edit_left_extreme = 0;
 int option_edit_top_extreme = 0;
 int option_edit_bottom_extreme = 0;
 int enable_show_tabs_tws = 1;
+int option_check_nl_at_eof = 0;
 
 const char *option_whole_chars_search = "0123456789abcdefghijklmnopqrstuvwxyz_";
 char *option_backup_ext = NULL;

edit/edit.h

@@ -60,6 +60,7 @@ extern int visible_tabs;
 extern int visible_tws;
 
 extern int simple_statusbar;
+extern int option_check_nl_at_eof;
 
 /* used in main() */
 void edit_stack_init (void);

edit/editcmd.c

@@ -394,24 +394,29 @@ menu_save_mode_cmd (void)
 {
     /* diaog sizes */
     const int DLG_X = 38;
-    const int DLG_Y = 10;
+    const int DLG_Y = 13;
 
     char *str_result;
 
     const char *str[] =
     {
-	N_("Quick save "),
-	N_("Safe save "),
-	N_("Do backups -->")
+	N_("&Quick save"),
+	N_("&Safe save"),
+	N_("&Do backups with following extension:")
     };
 
     QuickWidget widgets[] =
     {
-	/* 0 */ QUICK_BUTTON (18, DLG_X, 7, DLG_Y, N_("&Cancel"), B_CANCEL, NULL),
-	/* 1 */ QUICK_BUTTON ( 6, DLG_X, 7, DLG_Y, N_("&OK"),     B_ENTER,  NULL),
-	/* 2 */ QUICK_INPUT  (23, DLG_X, 5, DLG_Y, option_backup_ext, 9, 0, "edit-backup-ext", &str_result),
-	/* 3 */ QUICK_LABEL  (22, DLG_X, 4, DLG_Y, N_("Extension:")),
-	/* 4 */ QUICK_RADIO  ( 4, DLG_X, 3, DLG_Y, 3, str, &option_save_mode),
+	/* 0 */
+	QUICK_BUTTON   (18, DLG_X, DLG_Y - 3, DLG_Y, N_("&Cancel"), B_CANCEL, NULL),
+	/* 1 */
+	QUICK_BUTTON   ( 6, DLG_X, DLG_Y - 3, DLG_Y, N_("&OK"),     B_ENTER,  NULL),
+	/* 2 */
+	QUICK_CHECKBOX ( 4, DLG_X, 8, DLG_Y, N_("Check &POSIX new line"), &option_check_nl_at_eof),
+	/* 3 */
+	QUICK_INPUT    ( 8, DLG_X, 6, DLG_Y, option_backup_ext, 9, 0, "edit-backup-ext", &str_result),
+	/* 4 */
+	QUICK_RADIO    ( 4, DLG_X, 3, DLG_Y, 3, str, &option_save_mode),
 	QUICK_END
     };
 
@@ -424,36 +429,35 @@ menu_save_mode_cmd (void)
     size_t i;
     size_t maxlen = 0;
     int dlg_x;
-    size_t l1, w0, w1, w3;
+    size_t w0, w1, b_len, w3;
 
     assert (option_backup_ext != NULL);
 
     /* OK/Cancel buttons */
-    w0 = str_term_width1 (_(widgets[0].u.button.text)) + 2;
-    w1 = str_term_width1 (_(widgets[1].u.button.text)) + 4; /* default batton */
+    w0 = str_term_width1 (_(widgets[0].u.button.text)) + 3;
+    w1 = str_term_width1 (_(widgets[1].u.button.text)) + 5; /* default button */
+    b_len = w0 + w1 + 3;
 
-    w3 = str_term_width1 (_(widgets[3].u.label.text));
-
-    maxlen = l1 = w0 + w1 + 6;
+    maxlen = max (b_len, str_term_width1 (_(dialog.title)) + 2);
 
+    w3 = 0;
     for (i = 0; i < 3; i++) {
 #ifdef ENABLE_NLS
 	str[i] = _(str[i]);
 #endif
-	maxlen = max (maxlen, (size_t) str_term_width1 (str[i]) + 7);
+	w3 = max (w3, (size_t) str_term_width1 (str[i]));
     }
 
-    dlg_x = maxlen + w3 + 5 + 2;
-    widgets[2].u.input.len = w3; /* input field length */
-    dlg_x = min (COLS, dlg_x);
-    dialog.xlen = dlg_x;
+    maxlen = max (maxlen, w3 + 4);
 
-    widgets[0].relative_x = dlg_x * 2/3 - w0/2;
-    widgets[1].relative_x = dlg_x/3 - w1/2;
-    widgets[2].relative_x = widgets[3].relative_x = maxlen + 3;
+    dialog.xlen = min (COLS, maxlen + 8);
+
+    widgets[3].u.input.len = w3;
+    widgets[1].relative_x = (dialog.xlen - b_len)/2;
+    widgets[0].relative_x = widgets[1].relative_x + w0 + 2;
 
     for (i = 0; i < sizeof (widgets)/sizeof (widgets[0]); i++)
-	widgets[i].x_divisions = dlg_x;
+	widgets[i].x_divisions = dialog.xlen;
 
     if (quick_dialog (&dialog) != B_CANCEL) {
 	g_free (option_backup_ext);
@@ -476,6 +480,16 @@ edit_set_filename (WEdit *edit, const char *f)
 #endif
 }
 
+static gboolean
+edit_check_newline (WEdit *edit)
+{
+    return !(option_check_nl_at_eof && edit->last_byte > 0
+        && edit_get_byte (edit, edit->last_byte - 1) != '\n'
+        && edit_query_dialog2 (_("Warning"),
+                               _("The file you are saving is not finished with a newline"),
+                               _("C&ontinue"), _("&Cancel")));
+}
+
 static char *
 edit_get_save_file_as (WEdit *edit)
 {
@@ -534,6 +548,9 @@ edit_save_as_cmd (WEdit *edit)
     int save_lock = 0;
     int different_filename = 0;
 
+    if (!edit_check_newline (edit))
+        return 0;
+
     exp = edit_get_save_file_as (edit);
     edit_push_action (edit, KEY_PRESS + edit->start_display);
 
@@ -816,6 +833,9 @@ int edit_save_confirm_cmd (WEdit * edit)
 {
     gchar *f = NULL;
 
+    if (!edit_check_newline (edit))
+        return 0;
+
     if (edit_confirm_save) {
 	f = g_strconcat (_(" Confirm save file? : "), edit->filename, " ", NULL);
 	if (edit_query_dialog2 (_(" Save file "), f, _("&Save"), _("&Cancel"))){
@@ -1767,6 +1787,9 @@ edit_ok_to_exit (WEdit *edit)
     if (!edit->modified)
 	return 1;
 
+    if (!edit_check_newline (edit))
+        return 0;
+
     switch (edit_query_dialog3
 	    (_("Quit"), _(" File was modified, Save with exit? "),
 	     _("&Cancel quit"), _("&Yes"), _("&No"))) {

src/setup.c

@@ -217,6 +217,7 @@ static const struct {
     { "editor_visible_spaces", &visible_tws },
     { "editor_line_state", &option_line_state },
     { "editor_simple_statusbar", &simple_statusbar },
+    { "editor_check_new_line", &option_check_nl_at_eof },
 #endif /* USE_INTERNAL_EDIT */
 
     { "nice_rotating_dash", &nice_rotating_dash },