Imported Upstream version 2.19.0

[platform/upstream/git.git] / hex.c

diff --git a/hex.c b/hex.c
index 9619b67..10af1a2 100644 (file)
--- a/hex.c
+++ b/hex.c
@@ -35,20 +35,24 @@ const signed char hexval_table[256] = {
         -1, -1, -1, -1, -1, -1, -1, -1,                /* f8-ff */
 };
 
+int hex_to_bytes(unsigned char *binary, const char *hex, size_t len)
+{
+       for (; len; len--, hex += 2) {
+               unsigned int val = (hexval(hex[0]) << 4) | hexval(hex[1]);
+
+               if (val & ~0xff)
+                       return -1;
+               *binary++ = val;
+       }
+       return 0;
+}
+
 int get_sha1_hex(const char *hex, unsigned char *sha1)
 {
        int i;
-       for (i = 0; i < GIT_SHA1_RAWSZ; i++) {
-               unsigned int val;
-               /*
-                * hex[1]=='\0' is caught when val is checked below,
-                * but if hex[0] is NUL we have to avoid reading
-                * past the end of the string:
-                */
-               if (!hex[0])
-                       return -1;
-               val = (hexval(hex[0]) << 4) | hexval(hex[1]);
-               if (val & ~0xff)
+       for (i = 0; i < the_hash_algo->rawsz; i++) {
+               int val = hex2chr(hex);
+               if (val < 0)
                        return -1;
                *sha1++ = val;
                hex += 2;
@@ -61,13 +65,21 @@ int get_oid_hex(const char *hex, struct object_id *oid)
        return get_sha1_hex(hex, oid->hash);
 }
 
+int parse_oid_hex(const char *hex, struct object_id *oid, const char **end)
+{
+       int ret = get_oid_hex(hex, oid);
+       if (!ret)
+               *end = hex + the_hash_algo->hexsz;
+       return ret;
+}
+
 char *sha1_to_hex_r(char *buffer, const unsigned char *sha1)
 {
        static const char hex[] = "0123456789abcdef";
        char *buf = buffer;
        int i;
 
-       for (i = 0; i < GIT_SHA1_RAWSZ; i++) {
+       for (i = 0; i < the_hash_algo->rawsz; i++) {
                unsigned int val = *sha1++;
                *buf++ = hex[val >> 4];
                *buf++ = hex[val & 0xf];
@@ -85,8 +97,9 @@ char *oid_to_hex_r(char *buffer, const struct object_id *oid)
 char *sha1_to_hex(const unsigned char *sha1)
 {
        static int bufno;
-       static char hexbuffer[4][GIT_SHA1_HEXSZ + 1];
-       return sha1_to_hex_r(hexbuffer[3 & ++bufno], sha1);
+       static char hexbuffer[4][GIT_MAX_HEXSZ + 1];
+       bufno = (bufno + 1) % ARRAY_SIZE(hexbuffer);
+       return sha1_to_hex_r(hexbuffer[bufno], sha1);
 }
 
 char *oid_to_hex(const struct object_id *oid)