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 "context_replace.h"
  10 #include "error.h"
  11 #include "h/utils.h"
  12
  13
  14 void
  15 context_replace (char *key, char *value)
  16 {
  17     struct node *np;
  18
  19     key = FENDNULL(key);
  20
  21     /*
  22      * If list is empty, allocate head of profile/context list.
  23      */
  24     if (!m_defs) {
  25         NEW(np);
  26         m_defs = np;
  27         np->n_name = mh_xstrdup(key);
  28         np->n_field = getcpy (value);
  29         np->n_context = 1;
  30         np->n_next = NULL;
  31         ctxflags |= CTXMOD;
  32         return;
  33     }
  34
  35     /*
  36      * Search list of context/profile entries for
  37      * this key, and replace its value if found.
  38      */
  39     for (np = m_defs;; np = np->n_next) {
  40         if (!strcasecmp(FENDNULL(np->n_name), key)) {
  41             if (strcmp (value, np->n_field)) {
  42                 if (!np->n_context)
  43                     inform("bug: context_replace(key=\"%s\",value=\"%s\"), continuing...", key, value);
  44                 free(np->n_field);
  45                 np->n_field = mh_xstrdup(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     NEW(np->n_next);
  58     np = np->n_next;
  59     np->n_name = mh_xstrdup(key);
  60     np->n_field = getcpy (value);
  61     np->n_context = 1;
  62     np->n_next = NULL;
  63     ctxflags |= CTXMOD;
  64 }