date: support -d @SECONDS_SINCE_1970

function                                             old     new   delta
parse_datestr                                        647     721     +74

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

1 files changed, 10 insertions, 0 deletions

diff --git a/libbb/time.c b/libbb/time.c
index 5cd04268c..8d176e52e 100644
--- a/libbb/time.c
+++ b/libbb/time.c
@@ -68,6 +68,16 @@ void FAST_FUNC parse_datestr(const char *date_str, struct tm *ptm)
                                 end = '\0';
                         /* else end != NUL and we error out */
                 }
+        } else if (date_str[0] == '@') {
+                time_t t = bb_strtol(date_str + 1, NULL, 10);
+                if (!errno) {
+                        struct tm *lt = localtime(&t);
+                        if (lt) {
+                                *ptm = *lt;
+                                return;
+                        }
+                }
+                end = '1';
         } else {
                 /* Googled the following on an old date manpage:
                  *