X-Git-Url: http://git.kpe.io/?p=clsql.git;a=blobdiff_plain;f=sql%2Futils.lisp;h=dff2ab02ac52a9f0a35c73bdddd2eb951b67af7d;hp=d5b31ed4fd1678862294132dfd7bee98e95c6ee8;hb=b50166ae0ba2bc09a9094c0e675ec92010b7293e;hpb=ab6923bf84f595fb61eb0107f97ce143ca92db57

diff --git a/sql/utils.lisp b/sql/utils.lisp
index d5b31ed..dff2ab0 100644
--- a/sql/utils.lisp
+++ b/sql/utils.lisp
@@ -16,6 +16,22 @@
 
 (in-package #:clsql-sys)
 
+(defmacro defaulting (&rest place-value-plist)
+  `(progn
+    ,@(loop for (place value . rest) on place-value-plist by #'cddr
+            collect `(unless ,place (setf ,place ,value)))))
+
+(defun %get-int (v)
+  (etypecase v
+    (string (parse-integer v :junk-allowed t))
+    (integer v)
+    (number (truncate v))))
+
+(defun dequote (it)
+  (if (and (listp it) (eql (first it) 'quote))
+      (second it)
+      it))
+
 (defvar +whitespace-chars+
   '(#\space #\tab #\newline #\return
     ;; Tested: sbcl unicode, allegrocl, openmcl,clisp use #\no-break_space
@@ -426,3 +442,38 @@ removed. keys are searched with #'MEMBER"
       #+sbcl :weakness #+sbcl :value
       ,@args)
     ))
+
+(defun to-slot-name (slot)
+  "try to turn what we got representing the slot into a slot name"
+  (etypecase slot
+    (symbol slot)
+    (slot-definition (slot-definition-name slot))))
+
+(defun to-class (it)
+  (etypecase it
+    (class it)
+    (symbol (find-class it))
+    (standard-object (class-of it))))
+
+(defun to-class-name (o)
+  (etypecase o
+    (symbol o)
+    (standard-class (class-name o))
+    (standard-object (class-name (class-of o)))))
+
+(defun easy-slot-value (obj slot)
+  "like slot-value except it accepts slot-names or defs
+   and returns nil when the slot is unbound"
+  (let ((n (to-slot-name slot)))
+    (when (and obj (slot-boundp obj n))
+      (slot-value obj n))))
+
+(defun (setf easy-slot-value) (new obj slot)
+  "like slot-value except it accepts slot-names or defs"
+  (setf (slot-value obj (to-slot-name slot)) new))
+
+(defun delist-if-single (x)
+  "if this is a single item in a list return it"
+  (if (and (listp x) (= 1 (length x)))
+      (first x)
+      x))