Merge branch 'rs/hex-to-bytes-cleanup'

Code cleanup.

* rs/hex-to-bytes-cleanup:
  sha1_file: use hex_to_bytes()
  http-push: use hex_to_bytes()
  notes: move hex_to_bytes() to hex.c and export it

Author: gitster

cache.h

@@ -1340,6 +1340,13 @@ extern int set_disambiguate_hint_config(const char *var, const char *value);
 extern int get_sha1_hex(const char *hex, unsigned char *sha1);
 extern int get_oid_hex(const char *hex, struct object_id *sha1);
 
+/*
+ * Read `len` pairs of hexadecimal digits from `hex` and write the
+ * values to `binary` as `len` bytes. Return 0 on success, or -1 if
+ * the input does not consist of hex digits).
+ */
+extern int hex_to_bytes(unsigned char *binary, const char *hex, size_t len);
+
 /*
  * Convert a binary sha1 to its hex equivalent. The `_r` variant is reentrant,
  * and writes the NUL-terminated output to the buffer `out`, which must be at

hex.c

@@ -35,6 +35,18 @@ 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;

http-push.c

@@ -1007,20 +1007,18 @@ static void remote_ls(const char *path, int flags,
 		      void (*userFunc)(struct remote_ls_ctx *ls),
 		      void *userData);
 
-/* extract hex from sharded "xx/x{40}" filename */
+/* extract hex from sharded "xx/x{38}" filename */
 static int get_oid_hex_from_objpath(const char *path, struct object_id *oid)
 {
-	char hex[GIT_MAX_HEXSZ];
-
 	if (strlen(path) != GIT_SHA1_HEXSZ + 1)
 		return -1;
 
-	memcpy(hex, path, 2);
+	if (hex_to_bytes(oid->hash, path, 1))
+		return -1;
 	path += 2;
 	path++; /* skip '/' */
-	memcpy(hex + 2, path, GIT_SHA1_HEXSZ - 2);
 
-	return get_oid_hex(hex, oid);
+	return hex_to_bytes(oid->hash + 1, path, GIT_SHA1_RAWSZ - 1);
 }
 
 static void process_ls_object(struct remote_ls_ctx *ls)

notes.c

@@ -334,23 +334,6 @@ static void note_tree_free(struct int_node *tree)
 	}
 }
 
-/*
- * Read `len` pairs of hexadecimal digits from `hex` and write the
- * values to `binary` as `len` bytes. Return 0 on success, or -1 if
- * the input does not consist of hex digits).
- */
-static 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;
-}
-
 static int non_note_cmp(const struct non_note *a, const struct non_note *b)
 {
 	return strcmp(a->path, b->path);

sha1_file.c

@@ -1881,6 +1881,7 @@ int for_each_file_in_obj_subdir(unsigned int subdir_nr,
 	DIR *dir;
 	struct dirent *de;
 	int r = 0;
+	struct object_id oid;
 
 	if (subdir_nr > 0xff)
 		BUG("invalid loose object subdirectory: %x", subdir_nr);
@@ -1898,27 +1899,24 @@ int for_each_file_in_obj_subdir(unsigned int subdir_nr,
 		return r;
 	}
 
+	oid.hash[0] = subdir_nr;
+
 	while ((de = readdir(dir))) {
 		if (is_dot_or_dotdot(de->d_name))
 			continue;
 
 		strbuf_setlen(path, baselen);
 		strbuf_addf(path, "/%s", de->d_name);
 
-		if (strlen(de->d_name) == GIT_SHA1_HEXSZ - 2)  {
-			char hex[GIT_MAX_HEXSZ+1];
-			struct object_id oid;
-
-			xsnprintf(hex, sizeof(hex), "%02x%s",
-				  subdir_nr, de->d_name);
-			if (!get_oid_hex(hex, &oid)) {
-				if (obj_cb) {
-					r = obj_cb(&oid, path->buf, data);
-					if (r)
-						break;
-				}
-				continue;
+		if (strlen(de->d_name) == GIT_SHA1_HEXSZ - 2 &&
+		    !hex_to_bytes(oid.hash + 1, de->d_name,
+				  GIT_SHA1_RAWSZ - 1)) {
+			if (obj_cb) {
+				r = obj_cb(&oid, path->buf, data);
+				if (r)
+					break;
 			}
+			continue;
 		}
 
 		if (cruft_cb) {