less,microcom,lineedit: use common routine to set raw termios

function                                             old     new   delta
get_termios_and_make_raw                               -     139    +139
xget1                                                 39       8     -31
read_line_input                                     3912    3867     -45
less_main                                           2525    2471     -54
set_termios_to_raw                                   116      36     -80
------------------------------------------------------------------------------
(add/remove: 1/0 grow/shrink: 0/4 up/down: 139/-210)          Total: -71 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

2 files changed, 8 insertions, 18 deletions

diff --git a/miscutils/less.c b/miscutils/less.c
index d524b6c87..c6c158a51 100644
--- a/miscutils/less.c
+++ b/miscutils/less.c
@@ -1824,15 +1824,9 @@ int less_main(int argc, char **argv)
         G.kbd_fd_orig_flags = ndelay_on(tty_fd);
         kbd_fd = tty_fd; /* save in a global */
 
-        tcgetattr(kbd_fd, &term_orig);
-        term_less = term_orig;
-        term_less.c_lflag &= ~(ICANON | ECHO);
-        term_less.c_iflag &= ~(IXON | ICRNL);
-        /*term_less.c_oflag &= ~ONLCR;*/
-        term_less.c_cc[VMIN] = 1;
-        term_less.c_cc[VTIME] = 0;
-
-        IF_FEATURE_LESS_ASK_TERMINAL(G.winsize_err =) get_terminal_width_height(kbd_fd, &width, &max_displayed_line);
+        get_termios_and_make_raw(tty_fd, &term_less, &term_orig, TERMIOS_RAW_CRNL);
+
+        IF_FEATURE_LESS_ASK_TERMINAL(G.winsize_err =) get_terminal_width_height(tty_fd, &width, &max_displayed_line);
         /* 20: two tabstops + 4 */
         if (width < 20 || max_displayed_line < 3)
                 return bb_cat(argv);
diff --git a/miscutils/microcom.c b/miscutils/microcom.c
index b87f3273f..fa090057e 100644
--- a/miscutils/microcom.c
+++ b/miscutils/microcom.c
@@ -33,15 +33,11 @@
 // set raw tty mode
 static void xget1(int fd, struct termios *t, struct termios *oldt)
 {
-//TODO: use set_termios_to_raw()
-        tcgetattr(fd, oldt);
-        *t = *oldt;
-        cfmakeraw(t);
-//      t->c_lflag &= ~(ISIG|ICANON|ECHO|IEXTEN);
-//      t->c_iflag &= ~(BRKINT|IXON|ICRNL);
-//      t->c_oflag &= ~(ONLCR);
-//      t->c_cc[VMIN]  = 1;
-//      t->c_cc[VTIME] = 0;
+        get_termios_and_make_raw(fd, t, oldt, 0
+                | TERMIOS_CLEAR_ISIG /* ^C is ASCII char 3, not "interrupt me!" */
+                | TERMIOS_RAW_INPUT /* pass all chars verbatim, no special handling or translating CR->NL */
+                | TERMIOS_RAW_CRNL  /* dont convert NL<->CR on output too */
+        );
 }
 
 static int xset1(int fd, struct termios *tio, const char *device)