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

   1
   2 /*
   3  * context_replace.c -- add/replace an entry in the context/profile list
   4  *
   5  * This code is Copyright (c) 2002, by the authors of nmh.  See the
   6  * COPYRIGHT file in the root directory of the nmh distribution for
   7  * complete copyright information.
   8  */
   9
  10 #include <h/mh.h>
  11 #include <h/utils.h>
  12
  13
  14 void
  15 context_replace (char *key, char *value)
  16 {
  17     register struct node *np;
  18
  19     /*
  20      * If list is emtpy, allocate head of profile/context list.
  21      */
  22     if (!m_defs) {
  23         m_defs = (struct node *) mh_xmalloc (sizeof(*np));
  24
  25         np = m_defs;
  26         np->n_name = getcpy (key);
  27         np->n_field = getcpy (value);
  28         np->n_context = 1;
  29         np->n_next = NULL;
  30         ctxflags |= CTXMOD;
  31         return;
  32     }
  33
  34     /*
  35      * Search list of context/profile entries for
  36      * this key, and replace its value if found.
  37      */
  38     for (np = m_defs;; np = np->n_next) {
  39         if (!mh_strcasecmp (np->n_name, key)) {
  40             if (strcmp (value, np->n_field)) {
  41                 if (!np->n_context)
  42                     admonish (NULL, "bug: context_replace(key=\"%s\",value=\"%s\")", key, value);
  43                 if (np->n_field)
  44                     free (np->n_field);
  45                 np->n_field = getcpy (value);
  46                 ctxflags |= CTXMOD;
  47             }
  48             return;
  49         }
  50         if (!np->n_next)
  51             break;
  52     }
  53
  54     /*
  55      * Else add this new entry at the end
  56      */
  57     np->n_next = (struct node *) mh_xmalloc (sizeof(*np));
  58
  59     np = np->n_next;
  60     np->n_name = getcpy (key);
  61     np->n_field = getcpy (value);
  62     np->n_context = 1;
  63     np->n_next = NULL;
  64     ctxflags |= CTXMOD;
  65 }