X-Git-Url: https://diplodocus.org/git/nmh/blobdiff_plain/6c42153ad9362cc676ea66563bf400d7511b3b68..9322ba2854211794c27fae9468768b80b767c211:/sbr/context_find.c

diff --git a/sbr/context_find.c b/sbr/context_find.c
index 96f28f9d..0d3f11a2 100644
--- a/sbr/context_find.c
+++ b/sbr/context_find.c
@@ -2,8 +2,6 @@
 /*
  * context_find.c -- find an entry in the context/profile list
  *
- * $Id$
- *
  * 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.
@@ -13,17 +11,62 @@
 
 
 char *
-context_find (char *str)
+context_find (const char *str)
 {
     struct node *np;
 
-    /* sanity check - check that context has been read */
-    if (defpath == NULL)
-	adios (NULL, "oops, context hasn't been read yet");
-
     for (np = m_defs; np; np = np->n_next)
-	if (!strcasecmp (np->n_name, str))
+	if (!strcasecmp (np->n_name ? np->n_name : "", str ? str : ""))
 	    return (np->n_field);
 
     return NULL;
 }
+
+
+/*
+ * Helper function to search first, if subtype is non-NULL, for
+ * invoname-string-type/subtype and then, if not yet found,
+ * invoname-string-type.  If entry is found but is empty, it is
+ * treated as not found.
+ */
+char *
+context_find_by_type (const char *string, const char *type,
+                      const char *subtype) {
+    char *value = NULL;
+
+    if (subtype) {
+        char *cp;
+
+        cp = concat (invo_name, "-", string, "-", type, "/", subtype, NULL);
+        if ((value = context_find (cp)) != NULL && *value == '\0') value = NULL;
+        free (cp);
+    }
+
+    if (value == NULL) {
+        char *cp;
+
+        cp = concat (invo_name, "-", string, "-", type, NULL);
+        if ((value = context_find (cp)) != NULL && *value == '\0') value = NULL;
+        free (cp);
+    }
+
+    return value;
+}
+
+
+/*
+ * Helper function to search profile an entry with name beginning with prefix.
+ * The search is case insensitive.
+ */
+int
+context_find_prefix (const char *prefix) {
+    struct node *np;
+
+    for (np = m_defs; np; np = np->n_next) {
+	if (np->n_name  &&  ! strncasecmp (np->n_name, prefix, strlen(prefix))) {
+	    return 1;
+        }
+    }
+
+    return 0;
+}