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 "error.h"
  10 #include <h/utils.h>
  11
  12
  13 void
  14 context_replace (char *key, char *value)
  15 {
  16     struct node *np;
  17
  18     key = FENDNULL(key);
  19
  20     /*
  21      * If list is empty, allocate head of profile/context list.
  22      */
  23     if (!m_defs) {
  24         NEW(np);
  25         m_defs = np;
  26         np->n_name = mh_xstrdup(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 (!strcasecmp(FENDNULL(np->n_name), key)) {
  40             if (strcmp (value, np->n_field)) {
  41                 if (!np->n_context)
  42                     inform("bug: context_replace(key=\"%s\",value=\"%s\"), continuing...", key, value);
  43                 free(np->n_field);
  44                 np->n_field = mh_xstrdup(value);
  45                 ctxflags |= CTXMOD;
  46             }
  47             return;
  48         }
  49         if (!np->n_next)
  50             break;
  51     }
  52
  53     /*
  54      * Else add this new entry at the end
  55      */
  56     NEW(np->n_next);
  57     np = np->n_next;
  58     np->n_name = mh_xstrdup(key);
  59     np->n_field = getcpy (value);
  60     np->n_context = 1;
  61     np->n_next = NULL;
  62     ctxflags |= CTXMOD;
  63 }