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authorMasahiro Yamada <masahiroy@kernel.org>2021-04-12 04:12:27 +0300
committerMasahiro Yamada <masahiroy@kernel.org>2021-04-14 09:25:43 +0300
commit08718745d8610c2ed9870568b8d9c01b7f103efb (patch)
tree77c4c83e3cde7785df205d094b9bbb258a3d0359 /scripts/kconfig
parent0a94768cfda6a77c42e5373d264c96c77ef1a2e5 (diff)
downloadlinux-08718745d8610c2ed9870568b8d9c01b7f103efb.tar.xz
kconfig: nconf: refactor in print_in_middle()
This helper is the same as the sample code in the NCURSES HOWTO [1], but it is over-engineering to be used for nconf. I do not see any good reason to use the 'float' type just for the division by 2. All the call-sites pass a non-NULL pointer to the first argument, so 'if (win == NULL) win = stdscr;' is dead code. 'if (startx != 0) x = startx;' is dead code because 'x' will be overridden some lines below, by 'x = startx + (int)temp;'. All the call-sites pass a non-zero value to the second argument, so 'if (starty != 0)' is always true. getyx(win, y, x) is also dead-code because both 'y' and 'x' are overridden. All the call-sites pass 0 to the third parameter, so 'startx' can be removed. All the call-sites pass a non-zero value to the fourth parameter, so 'if (width == 0) width = 80;' is dead code. The window will be refreshed later, so there is no need to call refresh() in this function. Change the type of the last parameter from 'chtype' to 'int' to be aligned with the prototype, 'int wattrset(WINDOW *win, int attrs);' I also slightly cleaned up the indentation style. [1]: https://tldp.org/HOWTO/NCURSES-Programming-HOWTO/color.html Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Diffstat (limited to 'scripts/kconfig')
-rw-r--r--scripts/kconfig/nconf.c2
-rw-r--r--scripts/kconfig/nconf.gui.c31
-rw-r--r--scripts/kconfig/nconf.h7
3 files changed, 6 insertions, 34 deletions
diff --git a/scripts/kconfig/nconf.c b/scripts/kconfig/nconf.c
index 5209a18eeacb..b11b75f83f7e 100644
--- a/scripts/kconfig/nconf.c
+++ b/scripts/kconfig/nconf.c
@@ -953,7 +953,7 @@ static void show_menu(const char *prompt, const char *instructions,
current_instructions = instructions;
clear();
- print_in_middle(stdscr, 1, 0, getmaxx(stdscr),
+ print_in_middle(stdscr, 1, getmaxx(stdscr),
menu_backtitle,
attr_main_heading);
diff --git a/scripts/kconfig/nconf.gui.c b/scripts/kconfig/nconf.gui.c
index e747590cee17..9aedf40f1dc0 100644
--- a/scripts/kconfig/nconf.gui.c
+++ b/scripts/kconfig/nconf.gui.c
@@ -117,32 +117,10 @@ void set_colors(void)
}
/* this changes the windows attributes !!! */
-void print_in_middle(WINDOW *win,
- int starty,
- int startx,
- int width,
- const char *string,
- chtype color)
-{ int length, x, y;
- float temp;
-
-
- if (win == NULL)
- win = stdscr;
- getyx(win, y, x);
- if (startx != 0)
- x = startx;
- if (starty != 0)
- y = starty;
- if (width == 0)
- width = 80;
-
- length = strlen(string);
- temp = (width - length) / 2;
- x = startx + (int)temp;
- wattrset(win, color);
- mvwprintw(win, y, x, "%s", string);
- refresh();
+void print_in_middle(WINDOW *win, int y, int width, const char *str, int attrs)
+{
+ wattrset(win, attrs);
+ mvwprintw(win, y, (width - strlen(str)) / 2, "%s", str);
}
int get_line_no(const char *text)
@@ -577,7 +555,6 @@ void show_scroll_win(WINDOW *main_window,
text_cols, 0);
print_in_middle(win,
text_lines+2,
- 0,
text_cols,
"<OK>",
attr_dialog_menu_fore);
diff --git a/scripts/kconfig/nconf.h b/scripts/kconfig/nconf.h
index 90a1ae331878..6f925bc74eb3 100644
--- a/scripts/kconfig/nconf.h
+++ b/scripts/kconfig/nconf.h
@@ -68,12 +68,7 @@ typedef enum {
void set_colors(void);
/* this changes the windows attributes !!! */
-void print_in_middle(WINDOW *win,
- int starty,
- int startx,
- int width,
- const char *string,
- chtype color);
+void print_in_middle(WINDOW *win, int y, int width, const char *str, int attrs);
int get_line_length(const char *line);
int get_line_no(const char *text);
const char *get_line(const char *text, int line_no);