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

   1 /*
   2  * context_replace.c -- add/replace an entry in the context/profile list
   3  *
   4  * This code is Copyright (c) 2002, by the authors of nmh.  See the
   5  * COPYRIGHT file in the root directory of the nmh distribution for
   6  * complete copyright information.
   7  */
   8
   9 #include <h/mh.h>
  10 #include <h/utils.h>
  11
  12
  13 void
  14 context_replace (char *key, char *value)
  15 {
  16     struct node *np;
  17
  18     /*
  19      * If list is empty, allocate head of profile/context list.
  20      */
  21     if (!m_defs) {
  22         NEW(np);
  23         m_defs = np;
  24         np->n_name = getcpy (key);
  25         np->n_field = getcpy (value);
  26         np->n_context = 1;
  27         np->n_next = NULL;
  28         ctxflags |= CTXMOD;
  29         return;
  30     }
  31
  32     /*
  33      * Search list of context/profile entries for
  34      * this key, and replace its value if found.
  35      */
  36     for (np = m_defs;; np = np->n_next) {
  37         if (!strcasecmp (np->n_name ? np->n_name : "", key ? key : "")) {
  38             if (strcmp (value, np->n_field)) {
  39                 if (!np->n_context)
  40                     inform("bug: context_replace(key=\"%s\",value=\"%s\"), continuing...", key, value);
  41                 mh_xfree(np->n_field);
  42                 np->n_field = mh_xstrdup(value);
  43                 ctxflags |= CTXMOD;
  44             }
  45             return;
  46         }
  47         if (!np->n_next)
  48             break;
  49     }
  50
  51     /*
  52      * Else add this new entry at the end
  53      */
  54     NEW(np->n_next);
  55     np = np->n_next;
  56     np->n_name = getcpy (key);
  57     np->n_field = getcpy (value);
  58     np->n_context = 1;
  59     np->n_next = NULL;
  60     ctxflags |= CTXMOD;
  61 }