Changeset ed3d605 in mainline for uspace/lib/c/generic/uuid.c

Timestamp:

2019-02-09T18:31:41Z (6 years ago)

Author:

Matthieu Riolo <matthieu.riolo@…>

Children:

d55abe8b

Parents:

a508e82

Message:

Adding an implementation of uuid_format

File:

• uspace/lib/c/generic/uuid.c (modified) (2 diffs)

uspace/lib/c/generic/uuid.c

@@ -39 +39 @@
 #include <stddef.h>
 #include <str.h>
+#include <stdio.h>
 
 /** Generate UUID.
@@ -176 +177 @@
  * @return EOK on success, ENOMEM if out of memory
  */
-errno_t uuid_format(uuid_t *uuid, char **rstr)
-{
-        return ENOTSUP;
+errno_t uuid_format(uuid_t *uuid, char **rstr, bool uppercase)
+{
+        size_t size = 37;
+        char *str = malloc(sizeof(char) * size);
+        if (str == NULL)
+                return ENOMEM;
+        
+        const char *format = "%02x%02x%02x%02x-%02x%02x-%02x%02x-%02x%02x-%02x%02x%02x%02x%02x%02x";
+        if(uppercase)
+                format = "%02X%02X%02X%02X-%02X%02X-%02X%02X-%02X%02X-%02X%02X%02X%02X%02X%02X";
+
+        int ret = snprintf(str, size, format, uuid->b[0], uuid->b[1], uuid->b[2], uuid->b[3], uuid->b[4], uuid->b[5], uuid->b[6], uuid->b[7], uuid->b[8], uuid->b[9], uuid->b[10], uuid->b[11], uuid->b[12], uuid->b[13], uuid->b[14], uuid->b[15]);
+        
+        if (ret != 36)
+                return EINVAL;
+
+        *rstr = str;
+        return EOK;
 }