New function allowing an atom's length to be specified at intern time.

[mLib] / atom.c

diff --git a/atom.c b/atom.c
index 66e9b570613851d6d21922a7aa807a465dd050f1..dd02f5457b656919995052b037cf6f5de79b5e65 100644 (file)
--- a/atom.c
+++ b/atom.c
@@ -1,6 +1,6 @@
 /* -*-c-*-
  *
- * $Id: atom.c,v 1.1 2001/01/20 11:50:16 mdw Exp $
+ * $Id: atom.c,v 1.3 2001/01/25 21:13:15 mdw Exp $
  *
  * Atom management
  *
@@ -30,6 +30,12 @@
 /*----- Revision history --------------------------------------------------* 
  *
  * $Log: atom.c,v $
+ * Revision 1.3  2001/01/25 21:13:15  mdw
+ * New function allowing an atom's length to be specified at intern time.
+ *
+ * Revision 1.2  2001/01/21 19:04:51  mdw
+ * Include `crc32.h' for @CRC32@ macro.
+ *
  * Revision 1.1  2001/01/20 11:50:16  mdw
  * Implementation of atom tables (for example, as found in X11).
  *
@@ -42,6 +48,7 @@
 
 #include "alloc.h"
 #include "atom.h"
+#include "crc32.h"
 #include "hash.h"
 #include "sym.h"
 
@@ -101,10 +108,11 @@ void atom_destroytable(atom_table *t)
   sym_destroy(&t->t);
 }
 
-/* --- @atom_intern@ --- *
+/* --- @atom_intern@, @atom_nintern@ --- *
  *
  * Arguments:  @atom_table *t@ = pointer to an atom table
  *             @const char *p@ = pointer to the string to intern
+ *             @size_t n@ = size of the string (for @atom_nintern)
  *
  * Returns:    A pointer to the atom block for the given symbol string.
  *
@@ -124,6 +132,18 @@ atom *atom_intern(atom_table *t, const char *p)
   return (a);
 }
 
+atom *atom_nintern(atom_table *t, const char *p, size_t n)
+{
+  atom *a;
+  unsigned f;
+
+  ATOM_RESOLVE(t);
+  a = sym_find(&t->t, p, n, sizeof(atom), &f);
+  if (!f)
+    a->f = 0;
+  return (a);
+}
+
 /* --- @atom_gensym@ --- *
  *
  * Arguments:  @atom_table *t@ = pointer to a symbol table