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 "getcpy.h"
  10 #include "context_replace.h"
  11 #include "error.h"
  12 #include "h/utils.h"
  13
  14
  15 void
  16 context_replace (char *key, char *value)
  17 {
  18     struct node *np;
  19
  20     key = FENDNULL(key);
  21
  22     /*
  23      * If list is empty, allocate head of profile/context list.
  24      */
  25     if (!m_defs) {
  26         NEW(np);
  27         m_defs = np;
  28         np->n_name = mh_xstrdup(key);
  29         np->n_field = getcpy (value);
  30         np->n_context = 1;
  31         np->n_next = NULL;
  32         ctxflags |= CTXMOD;
  33         return;
  34     }
  35
  36     /*
  37      * Search list of context/profile entries for
  38      * this key, and replace its value if found.
  39      */
  40     for (np = m_defs;; np = np->n_next) {
  41         if (!strcasecmp(FENDNULL(np->n_name), key)) {
  42             if (strcmp (value, np->n_field)) {
  43                 if (!np->n_context)
  44                     inform("bug: context_replace(key=\"%s\",value=\"%s\"), continuing...", key, value);
  45                 free(np->n_field);
  46                 np->n_field = mh_xstrdup(value);
  47                 ctxflags |= CTXMOD;
  48             }
  49             return;
  50         }
  51         if (!np->n_next)
  52             break;
  53     }
  54
  55     /*
  56      * Else add this new entry at the end
  57      */
  58     NEW(np->n_next);
  59     np = np->n_next;
  60     np->n_name = mh_xstrdup(key);
  61     np->n_field = getcpy (value);
  62     np->n_context = 1;
  63     np->n_next = NULL;
  64     ctxflags |= CTXMOD;
  65 }