From 1abadee3fd1c15f3720003c411ec6043c29d7c09 Mon Sep 17 00:00:00 2001
From: Nick Mathewson <nickm@torproject.org>
Date: Fri, 22 Jun 2018 09:23:30 -0400
Subject: Extract key string manipulation functions into a new library.

---
 src/common/util_format.c | 37 ++-----------------------------------
 1 file changed, 2 insertions(+), 35 deletions(-)

(limited to 'src/common/util_format.c')

diff --git a/src/common/util_format.c b/src/common/util_format.c
index 713e87129c..8b299725a4 100644
--- a/src/common/util_format.c
+++ b/src/common/util_format.c
@@ -465,39 +465,6 @@ base16_encode(char *dest, size_t destlen, const char *src, size_t srclen)
   *cp = '\0';
 }
 
-/** Helper: given a hex digit, return its value, or -1 if it isn't hex. */
-static inline int
-hex_decode_digit_(char c)
-{
-  switch (c) {
-    case '0': return 0;
-    case '1': return 1;
-    case '2': return 2;
-    case '3': return 3;
-    case '4': return 4;
-    case '5': return 5;
-    case '6': return 6;
-    case '7': return 7;
-    case '8': return 8;
-    case '9': return 9;
-    case 'A': case 'a': return 10;
-    case 'B': case 'b': return 11;
-    case 'C': case 'c': return 12;
-    case 'D': case 'd': return 13;
-    case 'E': case 'e': return 14;
-    case 'F': case 'f': return 15;
-    default:
-      return -1;
-  }
-}
-
-/** Helper: given a hex digit, return its value, or -1 if it isn't hex. */
-int
-hex_decode_digit(char c)
-{
-  return hex_decode_digit_(c);
-}
-
 /** Given a hexadecimal string of <b>srclen</b> bytes in <b>src</b>, decode
  * it and store the result in the <b>destlen</b>-byte buffer at <b>dest</b>.
  * Return the number of bytes decoded on success, -1 on failure. If
@@ -520,8 +487,8 @@ base16_decode(char *dest, size_t destlen, const char *src, size_t srclen)
 
   end = src+srclen;
   while (src<end) {
-    v1 = hex_decode_digit_(*src);
-    v2 = hex_decode_digit_(*(src+1));
+    v1 = hex_decode_digit(*src);
+    v2 = hex_decode_digit(*(src+1));
     if (v1<0||v2<0)
       return -1;
     *(uint8_t*)dest = (v1<<4)|v2;
-- 
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