diplodocus.org Git - nmh/blob - sbr/context_replace.c

   1 /* context_replace.c -- add/replace an entry in the context/profile list
   2  *
   3  * This code is Copyright (c) 2002, by the authors of nmh.  See the
   4  * COPYRIGHT file in the root directory of the nmh distribution for
   5  * complete copyright information.
   6  */
   7
   8 #include <h/mh.h>
   9 #include <h/utils.h>
  10
  11
  12 void
  13 context_replace (char *key, char *value)
  14 {
  15     struct node *np;
  16
  17     /*
  18      * If list is empty, allocate head of profile/context list.
  19      */
  20     if (!m_defs) {
  21         NEW(np);
  22         m_defs = np;
  23         np->n_name = getcpy (key);
  24         np->n_field = getcpy (value);
  25         np->n_context = 1;
  26         np->n_next = NULL;
  27         ctxflags |= CTXMOD;
  28         return;
  29     }
  30
  31     /*
  32      * Search list of context/profile entries for
  33      * this key, and replace its value if found.
  34      */
  35     for (np = m_defs;; np = np->n_next) {
  36         if (!strcasecmp (FENDNULL(np->n_name), FENDNULL(key))) {
  37             if (strcmp (value, np->n_field)) {
  38                 if (!np->n_context)
  39                     inform("bug: context_replace(key=\"%s\",value=\"%s\"), continuing...", key, value);
  40                 mh_xfree(np->n_field);
  41                 np->n_field = mh_xstrdup(value);
  42                 ctxflags |= CTXMOD;
  43             }
  44             return;
  45         }
  46         if (!np->n_next)
  47             break;
  48     }
  49
  50     /*
  51      * Else add this new entry at the end
  52      */
  53     NEW(np->n_next);
  54     np = np->n_next;
  55     np->n_name = getcpy (key);
  56     np->n_field = getcpy (value);
  57     np->n_context = 1;
  58     np->n_next = NULL;
  59     ctxflags |= CTXMOD;
  60 }