X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~mdw/git/mLib/blobdiff_plain/e19206c2bfbd24ae9eceb5fbba9324fdcb3a544f..ad61a8f85b8e2dc5b3bbfe0629480e635af8bd3f:/env.c

diff --git a/env.c b/env.c
index 4a4fbe5..985dc52 100644
--- a/env.c
+++ b/env.c
@@ -1,6 +1,6 @@
 /* -*-c-*-
  *
- * $Id: env.c,v 1.1 1999/07/26 23:15:57 mdw Exp $
+ * $Id: env.c,v 1.4 2001/01/25 21:14:26 mdw Exp $
  *
  * Fiddling with environment variables
  *
@@ -30,6 +30,16 @@
 /*----- Revision history --------------------------------------------------* 
  *
  * $Log: env.c,v $
+ * Revision 1.4  2001/01/25 21:14:26  mdw
+ * Nowadays, @SYM_LEN@ doesn't include the terminating null, so revise the
+ * buffer-usage calculation.
+ *
+ * Revision 1.3  2001/01/20 11:48:10  mdw
+ * Use new @SYM_LEN@ macro for name lengths.
+ *
+ * Revision 1.2  2000/06/17 10:39:00  mdw
+ * Add support for arena management.
+ *
  * Revision 1.1  1999/07/26 23:15:57  mdw
  * Fiddling with environment variables.
  *
@@ -97,7 +107,7 @@ void env_put(sym_table *t, const char *name, const char *value)
   {
     size_t eq = strcspn(name, "=");
     if (name[eq] == '=') {
-      q = xmalloc(eq + 1);
+      q = x_alloc(t->t.a, eq + 1);
       memcpy(q, name, eq);
       q[eq] = 0;
       value = name + eq + 1;
@@ -110,21 +120,21 @@ void env_put(sym_table *t, const char *name, const char *value)
   if (!value) {
     var *v;
     if ((v = sym_find(t, name, -1, 0, 0)) != 0) {
-      free(v->v);
+      x_free(t->t.a, v->v);
       sym_remove(t, v);
     }
   } else {
     unsigned found;
     var *v = sym_find(t, name, -1, sizeof(*v), &found);
     if (found)
-      free(v->v);
-    v->v = xstrdup(value);
+      x_free(t->t.a, v->v);
+    v->v = x_strdup(t->t.a, value);
   }
 
   /* --- Tidying --- */
 
   if (q)
-    free(q);
+    xfree(q);
 }
 
 /* --- @env_import@ --- *
@@ -171,7 +181,7 @@ char **env_export(sym_table *t)
 
   for (sym_mkiter(&i, t); (v = sym_next(&i)) != 0; ) {
     n++;
-    sz += strlen(SYM_NAME(v)) + strlen(v->v) + 2;
+    sz += SYM_LEN(v) + strlen(v->v) + 2;
   }
 
   /* --- Allocate the big chunk of memory --- */
@@ -209,7 +219,7 @@ void env_destroy(sym_table *t)
   var *v;
 
   for (sym_mkiter(&i, t); (v = sym_next(&i)) != 0; )
-    free(v->v);
+    x_free(t->t.a, v->v);
   sym_destroy(t);
 }