libbb: introduce and use strcpy_and_process_escape_sequences

function                                             old     new   delta
strcpy_and_process_escape_sequences                    -      50     +50
bb_process_escape_sequence                           148     138     -10
printf_main                                          789     776     -13
getty_main                                          1897    1831     -66
------------------------------------------------------------------------------
(add/remove: 1/0 grow/shrink: 0/3 up/down: 50/-89)            Total: -39 bytes

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

1 files changed, 3 insertions, 15 deletions

diff --git a/loginutils/getty.c b/loginutils/getty.c
index b1cd235fb..ab55ea4b0 100644
--- a/loginutils/getty.c
+++ b/loginutils/getty.c
@@ -188,21 +188,9 @@ static void parse_args(char **argv, struct options *op, char **fakehost_p)
                 &(op->login), &op->timeout);
         argv += optind;
         if (op->flags & F_INITSTRING) {
-                const char *p = op->initstring;
-                char *q;
-
-                op->initstring = q = xstrdup(p);
-                /* copy optarg into op->initstring decoding \ddd
-                   octal codes into chars */
-                while (*p) {
-                        if (*p == '\\') {
-                                p++;
-                                *q++ = bb_process_escape_sequence(&p);
-                        } else {
-                                *q++ = *p++;
-                        }
-                }
-                *q = '\0';
+                op->initstring = xstrdup(op->initstring);
+                /* decode \ddd octal codes into chars */
+                strcpy_and_process_escape_sequences((char*)op->initstring, op->initstring);
         }
         op->flags ^= F_ISSUE;           /* invert flag "show /etc/issue" */
         debug("after getopt\n");