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tweaks: factor out the check for 'viewok' into its own function

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And also prevent a theoretical crash for restricted prompt functions.
This commit is contained in:
Benno Schulenberg 2018-03-20 19:56:03 +01:00
parent b830a7dd38
commit 8b8c6bb818
3 changed files with 15 additions and 12 deletions
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24
src/nano.c
View File

@ -1636,6 +1636,14 @@ bool wanted_to_move(void (*func)(void))
func == to_first_line || func == to_last_line;
}
/* Return TRUE when the given shortcut is valid in view mode. */
bool okay_for_view(const sc *shortcut)
{
const subnfunc *func = sctofunc(shortcut);
return (func && func->viewok);
}
/* Read in a keystroke. Act on the keystroke if it is a shortcut or a toggle;
* otherwise, insert it into the edit buffer. If allow_funcs is FALSE, don't
* do anything with the keystroke -- just return it. */
@ -1727,12 +1735,9 @@ int do_input(bool allow_funcs)
if (shortcut == NULL)
pletion_line = NULL;
else {
if (ISSET(VIEW_MODE)) {
const subnfunc *f = sctofunc(shortcut);
if (f && !f->viewok) {
print_view_warning();
return ERR;
}
if (ISSET(VIEW_MODE) && !okay_for_view(shortcut)) {
print_view_warning();
return ERR;
}
/* If the function associated with this shortcut is
@ -1804,11 +1809,8 @@ int do_input(bool allow_funcs)
wrap_reset();
#endif
#ifdef ENABLE_COLOR
if (!refresh_needed) {
const subnfunc *f = sctofunc(shortcut);
if (f && !f->viewok)
check_the_multis(openfile->current);
}
if (!refresh_needed && !okay_for_view(shortcut))
check_the_multis(openfile->current);
#endif
if (!refresh_needed && (shortcut->func == do_delete ||
shortcut->func == do_backspace))

2
src/prompt.c
View File

@ -171,7 +171,7 @@ int do_statusbar_input(bool *finished)
/* Handle any other shortcut in the current menu, setting finished
* to TRUE to indicate that we're done after running or trying to
* run its associated function. */
if (!ISSET(VIEW_MODE) || sctofunc(shortcut)->viewok)
if (!ISSET(VIEW_MODE) || okay_for_view(shortcut))
shortcut->func();
*finished = TRUE;
}

1
src/proto.h
View File

@ -439,6 +439,7 @@ void disable_flow_control(void);
void enable_flow_control(void);
void terminal_init(void);
void unbound_key(int code);
bool okay_for_view(const sc *shortcut);
int do_input(bool allow_funcs);
void do_output(char *output, size_t output_len, bool allow_cntrls);