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src/subversion/subversion/mod_dav_svn/repos.c  view on Meta::CPAN

{
    apr_array_header_t *accept_recs;

    if (!accept_line)
      return NULL;

    accept_recs = apr_array_make(p, 10, sizeof(accept_rec));

    while (*accept_line)
      {
        accept_rec *prefs = (accept_rec *) apr_array_push(accept_recs);
        accept_line = get_entry(p, prefs, accept_line);
      }

    return accept_recs;
}

/* ---------------------------------------------------------------------- */


/* qsort comparison function for the quality field of the accept_rec
   structure */
static int sort_encoding_pref(const void *accept_rec1, const void *accept_rec2)
{
  float diff = ((const accept_rec *) accept_rec1)->quality -
      ((const accept_rec *) accept_rec2)->quality;
  return (diff == 0 ? 0 : (diff > 0 ? -1 : 1));
}

/* Parse and handle any possible Accept-Encoding header that has been
   sent as part of the request.  */
static void
negotiate_encoding_prefs(request_rec *r, int *svndiff_version)
{
  /* It would be nice if mod_negotiation
     <http://httpd.apache.org/docs-2.1/mod/mod_negotiation.html> could
     handle the Accept-Encoding header parsing for us.  Sadly, it
     looks like its data structures and routines are private (see
     httpd/modules/mappers/mod_negotiation.c).  Thus, we duplicate the
     necessary ones in this file. */
  int i;
  const apr_array_header_t *encoding_prefs;
  encoding_prefs = do_header_line(r->pool,
                                  apr_table_get(r->headers_in,
                                                "Accept-Encoding"));

  if (!encoding_prefs || apr_is_empty_array(encoding_prefs))
    {
      *svndiff_version = 0;
      return;
    }

  *svndiff_version = 0;
  qsort(encoding_prefs->elts, (size_t) encoding_prefs->nelts,
        sizeof(accept_rec), sort_encoding_pref);
  for (i = 0; i < encoding_prefs->nelts; i++)
    {
      struct accept_rec rec = APR_ARRAY_IDX(encoding_prefs, i,
                                            struct accept_rec);
      if (strcmp(rec.name, "svndiff1") == 0)
        {
          *svndiff_version = 1;
          break;
        }
      else if (strcmp(rec.name, "svndiff") == 0)
        {
          *svndiff_version = 0;
          break;

src/subversion/subversion/mod_dav_svn/repos.c  view on Meta::CPAN

  /* ### ugly hack to carry over Content-Type data to the open_stream, which
     ### does not have access to the request headers. */
  {
    const char *ct = apr_table_get(r->headers_in, "content-type");

    comb->priv.is_svndiff =
      ct != NULL
      && strcmp(ct, SVN_SVNDIFF_MIME_TYPE) == 0;
  }

  negotiate_encoding_prefs(r, &comb->priv.svndiff_version);

  /* ### and another hack for computing diffs to send to the client */
  comb->priv.delta_base = apr_table_get(r->headers_in,
                                        SVN_DAV_DELTA_BASE_HEADER);

  /* Gather any options requested by an svn client. */
  comb->priv.svn_client_options = apr_table_get(r->headers_in,
                                                SVN_DAV_OPTIONS_HEADER);

  /* See if the client sent a custom 'version name' request header. */