X-Git-Url: https://diplodocus.org/git/nmh/blobdiff_plain/1691e80890e5d8ba258c51c214a3e91880e1db2b..2b60a54adb3b0bf5a9b927708085492b816a6015:/sbr/context_foil.c

diff --git a/sbr/context_foil.c b/sbr/context_foil.c
index 208c45e7..09bfe30c 100644
--- a/sbr/context_foil.c
+++ b/sbr/context_foil.c
@@ -1,11 +1,12 @@
-
-/*
- * context_foil.c -- foil search of profile and context
+/* context_foil.c -- foil search of profile and context
  *
- * $Id$
+ * This code is Copyright (c) 2002, by the authors of nmh.  See the
+ * COPYRIGHT file in the root directory of the nmh distribution for
+ * complete copyright information.
  */
 
 #include <h/mh.h>
+#include <h/utils.h>
 
 /*
  * Foil search of users .mh_profile
@@ -15,26 +16,40 @@
 int
 context_foil (char *path)
 {
-    register struct node *np;
+    struct node *np;
 
-    defpath = context = "/dev/null";
+    /* In fact, nobody examines defpath in code paths where
+     * it's been set by us -- the uses in the source tree are:
+     *  1 sbr/context_read.c uses it only after setting it itself
+     *  2 uip/install_mh.c uses it only after setting it itself
+     *  3 uip/mark.c prints it if given the -debug switch
+     * A worthwhile piece of code cleanup would be to make 1 and
+     * 2 use a local variable and just delete 3.
+     *
+     * Similarly, context and ctxpath are not really used
+     * outside the context_* routines. It might be worth combining
+     * them into one file so the variables can be made static.
+     */
+
+    /* We set context to NULL to indicate that no context file
+     * is to be read. (Using /dev/null doesn't work because we
+     * would try to lock it, which causes timeouts with some
+     * locking methods.)
+     */
+    defpath = context = NULL;
 
     /*
      * If path is given, create a minimal profile/context list
      */
     if (path) {
-	if (!(m_defs = (struct node *) malloc (sizeof(*np)))) {
-	    advise (NULL, "unable to allocate profile storage");
-	    return -1;
-	}
-
-	np = m_defs;
+	NEW(np);
+	m_defs = np;
 	if (!(np->n_name = strdup ("Path"))) {
-	    advise (NULL, "strdup failed");
+	    inform("strdup failed");
 	    return -1;
 	}
 	if (!(np->n_field = strdup (path))) {
-	    advise (NULL, "strdup failed");
+	    inform("strdup failed");
 	    return -1;
 	}
 	np->n_context = 0;
@@ -42,11 +57,10 @@ context_foil (char *path)
 
 	if (mypath == NULL && (mypath = getenv ("HOME")) != NULL)
 	    if (!(mypath = strdup (mypath))) {
-		advise (NULL, "strdup failed");
+		inform("strdup failed");
 		return -1;
 	    }
     }
 
     return 0;
 }
-