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     key = FENDNULL(key);
  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 = mh_xstrdup(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(FENDNULL(np->n_name), key)) {
  39             if (strcmp (value, np->n_field)) {
  40                 if (!np->n_context)
  41                     inform("bug: context_replace(key=\"%s\",value=\"%s\"), continuing...", key, value);
  42                 free(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 = mh_xstrdup(key);
  58     np->n_field = getcpy (value);
  59     np->n_context = 1;
  60     np->n_next = NULL;
  61     ctxflags |= CTXMOD;
  62 }