| lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
|
Open Source and information security mailing list archives
| ||
|
Date: Thu, 05 Jan 2012 18:08:52 +0200
From: Paulius Zaleckas <paulius.zaleckas@...il.com>
To: mmarek@...e.cz, linux-kbuild@...r.kernel.org,
linux-kernel@...r.kernel.org
Subject: [PATCH 1/2] menuconfig: basic string editing in inputbox support
For me the most irritating thing in linux kernel was absence
of string editing in menuconfig's inputbox. If you wanted to
change first symbol you had to delete all string and then type
it all again.
New implementation handles right/left cursor, backspace and
delete keys. It does a little bit more terminal manipulations
as string area is fully redrawn on each event.
Signed-off-by: Paulius Zaleckas <paulius.zaleckas@...il.com>
---
scripts/kconfig/lxdialog/inputbox.c | 85 +++++++++++++++++++++--------------
1 files changed, 52 insertions(+), 33 deletions(-)
diff --git a/scripts/kconfig/lxdialog/inputbox.c b/scripts/kconfig/lxdialog/inputbox.c
index dd8e587..3bd7111 100644
--- a/scripts/kconfig/lxdialog/inputbox.c
+++ b/scripts/kconfig/lxdialog/inputbox.c
@@ -44,7 +44,7 @@ static void print_buttons(WINDOW * dialog, int height, int width, int selected)
int dialog_inputbox(const char *title, const char *prompt, int height, int width,
const char *init)
{
- int i, x, y, box_y, box_x, box_width;
+ int i, len, x, y, box_y, box_x, box_width;
int input_x = 0, scroll = 0, key = 0, button = -1;
char *instr = dialog_input_result;
WINDOW *dialog;
@@ -54,6 +54,8 @@ int dialog_inputbox(const char *title, const char *prompt, int height, int width
else
strcpy(instr, init);
+ len = strlen(instr);
+
do_resize:
if (getmaxy(stdscr) <= (height - 2))
return -ERRDISPLAYTOOSMALL;
@@ -97,14 +99,13 @@ do_resize:
wmove(dialog, box_y, box_x);
wattrset(dialog, dlg.inputbox.atr);
- input_x = strlen(instr);
-
- if (input_x >= box_width) {
- scroll = input_x - box_width + 1;
+ if (len >= box_width) {
+ scroll = len - box_width + 1;
input_x = box_width - 1;
for (i = 0; i < box_width - 1; i++)
waddch(dialog, instr[scroll + i]);
} else {
+ input_x = len;
waddstr(dialog, instr);
}
@@ -121,50 +122,68 @@ do_resize:
case KEY_UP:
case KEY_DOWN:
break;
- case KEY_LEFT:
- continue;
case KEY_RIGHT:
+ if (scroll + input_x < len) {
+ if (input_x == box_width - 1)
+ scroll++;
+ else
+ input_x++;
+ goto redraw;
+ }
continue;
+ case KEY_LEFT:
case KEY_BACKSPACE:
case 127:
if (input_x || scroll) {
- wattrset(dialog, dlg.inputbox.atr);
- if (!input_x) {
- scroll = scroll < box_width - 1 ? 0 : scroll - (box_width - 1);
- wmove(dialog, box_y, box_x);
- for (i = 0; i < box_width; i++)
- waddch(dialog,
- instr[scroll + input_x + i] ?
- instr[scroll + input_x + i] : ' ');
- input_x = strlen(instr) - scroll;
- } else
+ /*
+ * Some fancy scrolling, so you can see what
+ * you will be deleting with backspace
+ */
+ if (!input_x || (input_x < box_width / 4 && scroll))
+ scroll--;
+ else
input_x--;
- instr[scroll + input_x] = '\0';
- mvwaddch(dialog, box_y, input_x + box_x, ' ');
- wmove(dialog, box_y, input_x + box_x);
- wrefresh(dialog);
+
+ if (key != KEY_LEFT) {
+ int pos = scroll + input_x;
+ memmove(&instr[pos], &instr[pos + 1], len-- - pos + 1);
+ }
+ goto redraw;
+ }
+ continue;
+ case KEY_DC:
+ if (scroll + input_x < len) {
+ int pos = scroll + input_x;
+ memmove(&instr[pos], &instr[pos + 1], len-- - pos + 1);
+ goto redraw;
}
continue;
default:
if (key < 0x100 && isprint(key)) {
if (scroll + input_x < MAX_LEN) {
- wattrset(dialog, dlg.inputbox.atr);
- instr[scroll + input_x] = key;
- instr[scroll + input_x + 1] = '\0';
- if (input_x == box_width - 1) {
+ int pos = scroll + input_x;
+ memmove(&instr[pos + 1], &instr[pos], len++ - pos + 1);
+ instr[pos] = key;
+ if (input_x == box_width - 1)
scroll++;
- wmove(dialog, box_y, box_x);
- for (i = 0; i < box_width - 1; i++)
- waddch(dialog, instr [scroll + i]);
- } else {
- wmove(dialog, box_y, input_x++ + box_x);
- waddch(dialog, key);
- }
- wrefresh(dialog);
+ else
+ input_x++;
+ goto redraw;
} else
flash(); /* Alarm user about overflow */
continue;
}
+ break;
+ redraw:
+ wattrset(dialog, dlg.inputbox.atr);
+ wmove(dialog, box_y, box_x);
+ for (i = 0; i < box_width - 1; i++)
+ waddch(dialog,
+ scroll + i < len ?
+ instr[scroll + i] : ' ');
+ wmove(dialog, box_y, input_x + box_x);
+ wrefresh(dialog);
+ continue;
}
}
switch (key) {
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
Powered by blists - more mailing lists