random small size optimizations

1 files changed, 13 insertions, 0 deletions

diff --git a/libbb/xfuncs.c b/libbb/xfuncs.c
index 827cbe870..207537929 100644
--- a/libbb/xfuncs.c
+++ b/libbb/xfuncs.c
@@ -333,6 +333,19 @@ char *itoa(int n)
         return local_buf;
 }
 
+// Emit a string of hex representation of bytes
+char *bin2hex(char *p, const char *cp, int count)
+{
+        while (count) {
+                unsigned char c = *cp++;
+                /* put lowercase hex digits */
+                *p++ = 0x10 | bb_hexdigits_upcase[c >> 4];
+                *p++ = 0x10 | bb_hexdigits_upcase[c & 0xf];
+                count--;
+        }
+        return p;
+}
+
 // Die with an error message if we can't set gid.  (Because resource limits may
 // limit this user to a given number of processes, and if that fills up the
 // setgid() will fail and we'll _still_be_root_, which is bad.)