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readline: move backspace key handling to the DO_BACKSPACE macro 

Signed-off-by: Antony Pavlov <antonynpavlov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
This commit is contained in:
Antony Pavlov 2012-10-26 09:58:53 +04:00 committed by Sascha Hauer
parent 72703410fe
commit db494137a8
1 changed files with 13 additions and 10 deletions
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23
lib/readline.c
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@ -137,6 +137,18 @@ static char* hist_next(void)
} \
}
#define DO_BACKSPACE() \
wlen = eol_num - num; \
num--; \
memmove(buf + num, buf + num + 1, wlen); \
getcmd_putch(CTL_BACKSPACE); \
putnstr(buf + num, wlen); \
getcmd_putch(' '); \
do { \
getcmd_putch(CTL_BACKSPACE); \
} while (wlen--); \
eol_num--;
static void cread_add_char(char ichar, int insert, unsigned long *num,
unsigned long *eol_num, char *buf, unsigned long len)
{
@ -273,16 +285,7 @@ int readline(const char *prompt, char *buf, int len)
case KEY_DEL7:
case 8:
if (num) {
wlen = eol_num - num;
num--;
memmove(buf + num, buf + num + 1, wlen);
getcmd_putch(CTL_BACKSPACE);
putnstr(buf + num, wlen);
getcmd_putch(' ');
do {
getcmd_putch(CTL_BACKSPACE);
} while (wlen--);
eol_num--;
DO_BACKSPACE();
}
break;
case KEY_DEL: