feat(uuid): uuid package

mudlib/.gitignore

@@ -33,6 +33,7 @@
 !/packages/json
 !/packages/test
 !/packages/time
+!/packages/uuid
 
 
 # ignore games, except the common ones

mudlib/packages/uuid/master.c

@@ -0,0 +1,2 @@
+
+inherit "/packages/uuid/src/uuid.c";

mudlib/packages/uuid/readme.md

@@ -0,0 +1,22 @@
+
+# uuid.c
+
+Found in:
+
+[LPCsnippets Github Repository](https://github.com/atari2600tim/LPCsnippets/blob/master/uuid.c).
+
+## Info
+
+This is a "version 4" uuid.  This is based on random numbers, the others use time.
+https://en.wikipedia.org/wiki/Universally_unique_identifier#Version_4_(random)
+supposed to use lower case but accept upper case (so run lower_case when comparing incoming stuff)
+
+Author unknown.
+
+Example:
+
+```
+> exec return "/packages/uuid/src/uuid.c"->uuid()
+Result:
+ "be97d609-4d5d-4e35-9b17-00a2f85d353f"
+```

mudlib/packages/uuid/src/uuid.c

@@ -0,0 +1,11 @@
+
+string uuid()
+{
+  // This is a "version 4" uuid.  This is based on random numbers, the others use time.
+  // https://en.wikipedia.org/wiki/Universally_unique_identifier#Version_4_(random)
+  // supposed to use lower case but accept upper case (so run lower_case when comparing incoming stuff)
+
+  return sprintf("%04x%04x-%04x-4%03x-%0x%03x-%04x%04x%04x",
+    random(0x10000),random(0x10000),random(0x10000),random(0x1000),
+    (8+random(4)), random(0x1000),random(0x10000),random(0x10000),random(0x10000));
+}