From 3a34d0c08a77ee48edc3f4353cc49b95aba85c2f Mon Sep 17 00:00:00 2001
From: Denis Vlasenko
Date: Fri, 12 Jan 2007 22:10:34 +0000
Subject: random small size optimizations

---
 libbb/messages.c |  1 +
 libbb/read.c     |  2 +-
 libbb/xfuncs.c   | 13 +++++++++++++
 3 files changed, 15 insertions(+), 1 deletion(-)

(limited to 'libbb')

diff --git a/libbb/messages.c b/libbb/messages.c
index c640faf..6c3d2f6 100644
--- a/libbb/messages.c
+++ b/libbb/messages.c
@@ -28,6 +28,7 @@ const char bb_msg_standard_input[] = "standard input";
 const char bb_msg_standard_output[] = "standard output";
 
 const char bb_str_default[] = "default";
+const char bb_hexdigits_upcase[] = "0123456789ABCDEF";
 
 const char bb_path_passwd_file[] = "/etc/passwd";
 const char bb_path_shadow_file[] = "/etc/shadow";
diff --git a/libbb/read.c b/libbb/read.c
index 50e0354..861828d 100644
--- a/libbb/read.c
+++ b/libbb/read.c
@@ -88,7 +88,7 @@ char *reads(int fd, char *buffer, size_t size)
 		*p++ = '\0';
 		// avoid incorrect (unsigned) widening
 		offset = (off_t)(p-buffer) - (off_t)size;
-		// set fd position the right after the \n
+		// set fd position right after '\n'
 		if (offset && lseek(fd, offset, SEEK_CUR) == (off_t)-1)
 			return NULL;
 	}
diff --git a/libbb/xfuncs.c b/libbb/xfuncs.c
index 827cbe8..2075379 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.)
-- 
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