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     struct node *np;
  18
  19     /*
  20      * If list is empty, allocate head of profile/context list.
  21      */
  22     if (!m_defs) {
  23         NEW(np);
  24         m_defs = np;
  25         np->n_name = getcpy (key);
  26         np->n_field = getcpy (value);
  27         np->n_context = 1;
  28         np->n_next = NULL;
  29         ctxflags |= CTXMOD;
  30         return;
  31     }
  32
  33     /*
  34      * Search list of context/profile entries for
  35      * this key, and replace its value if found.
  36      */
  37     for (np = m_defs;; np = np->n_next) {
  38         if (!strcasecmp (np->n_name ? np->n_name : "", key ? key : "")) {
  39             if (strcmp (value, np->n_field)) {
  40                 if (!np->n_context)
  41                     admonish (NULL, "bug: context_replace(key=\"%s\",value=\"%s\")", key, value);
  42                 mh_xfree(np->n_field);
  43                 np->n_field = mh_xstrdup(value);
  44                 ctxflags |= CTXMOD;
  45             }
  46             return;
  47         }
  48         if (!np->n_next)
  49             break;
  50     }
  51
  52     /*
  53      * Else add this new entry at the end
  54      */
  55     NEW(np->n_next);
  56     np = np->n_next;
  57     np->n_name = getcpy (key);
  58     np->n_field = getcpy (value);
  59     np->n_context = 1;
  60     np->n_next = NULL;
  61     ctxflags |= CTXMOD;
  62 }