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/* -*- Mode: C; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/*
 *  Copyright © 2000-2003 Marco Pesenti Gritti
 *  Copyright © 2003, 2004, 2005 Christian Persch
 *  Copyright © 2004 Crispin Flowerday
 *  Copyright © 2004 Adam Hooper
 *
 *  This program is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation; either version 2, or (at your option)
 *  any later version.
 *
 *  This program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with this program; if not, write to the Free Software
 *  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 *
 */

#include "config.h"
#include "ephy-embed-utils.h"

#include "ephy-about-handler.h"
#include "ephy-string.h"

#include <string.h>
#include <glib/gi18n.h>
#include <libsoup/soup.h>

char *
ephy_embed_utils_link_message_parse (const char *message)
{
  
  char *status_message;
  char **splitted_message;
  int i = 1;
  char *p;
  GString *tmp;

  status_message = ephy_string_blank_chr (g_strdup (message));
  
  if (!status_message || !g_str_has_prefix (status_message, "mailto:"))
    return status_message;

  /* We first want to eliminate all the things after "?", like cc,
   * subject and alike.
   */
  p = strchr (status_message, '?');
  if (p != NULL) *p = '\0';
    
  /* Then we also want to check if there is more than an email address
   * in the mailto: list.
   */
  splitted_message = g_strsplit_set (status_message, ";", -1);
  tmp = g_string_new (g_strdup_printf (_("Send an email message to “%s”"),
                                       (splitted_message[0] + 7)));
    
  while (splitted_message [i] != NULL) {
    g_string_append_printf (tmp, ", “%s”", splitted_message[i]);
    i++;
  }

  g_free (status_message);
  g_strfreev (splitted_message);

  return g_string_free (tmp, FALSE);
}

gboolean
ephy_embed_utils_address_has_web_scheme (const char *address)
{
  gboolean has_web_scheme;
  int colonpos;

  if (address == NULL)
    return FALSE;

  colonpos = (int)((g_strstr_len (address, 11, ":")) - address);

  if (colonpos < 0)
    return FALSE;

  has_web_scheme = !(g_ascii_strncasecmp (address, "http", colonpos) &&
                     g_ascii_strncasecmp (address, "https", colonpos) &&
                     g_ascii_strncasecmp (address, "ftp", colonpos) &&
                     g_ascii_strncasecmp (address, "file", colonpos) &&
                     g_ascii_strncasecmp (address, "javascript", colonpos) &&
                     g_ascii_strncasecmp (address, "data", colonpos) &&
                     g_ascii_strncasecmp (address, "about", colonpos) &&
                     g_ascii_strncasecmp (address, "ephy-about", colonpos) &&
                     g_ascii_strncasecmp (address, "gopher", colonpos));

  return has_web_scheme;
}

gboolean
ephy_embed_utils_address_is_existing_absolute_filename (const char *address)
{
  return g_path_is_absolute (address) &&
    g_file_test (address, G_FILE_TEST_EXISTS);
}

char*
ephy_embed_utils_normalize_address (const char *address)
{
  char *effective_address = NULL;
  SoupURI *uri;

  g_return_val_if_fail (address, NULL);

  if (ephy_embed_utils_address_is_existing_absolute_filename (address))
    return g_strconcat ("file://", address, NULL);

  uri = soup_uri_new (address);

  /* FIXME: if we are here we passed through the "should we
   * auto-search this?" regex in EphyWebView, so we should be a
   * valid-ish URL. Auto-prepend http:// to anything that is not
   * one according to soup, because it probably will be
   * something like "google.com". Special case localhost(:port)
   * and IP(:port), because SoupURI, correctly, thinks it is a
   * URI with scheme being localhost/IP and, optionally, path
   * being the port. Ideally we should check if we have a
   * handler for the scheme, and since we'll fail for localhost
   * and IP, we'd fallback to loading it as a domain. */
  if (!uri ||
      (uri && !g_strcmp0 (uri->scheme, "localhost")) ||
      (uri && g_hostname_is_ip_address (uri->scheme)))
    effective_address = g_strconcat ("http://", address, NULL);
  else {
    /* Convert about: schemes to ephy-about: in order to
     * force WebKit to delegate its handling to our
     * EphyRequestAbout. In general about: schemes are
     * handled internally by WebKit and mean "empty
     * document".
     */
    if (g_str_has_prefix (address, "about:") && !g_str_equal (address, "about:blank")) {
      effective_address = g_strconcat (EPHY_ABOUT_SCHEME, address + strlen ("about"), NULL);
    } else
      effective_address = g_strdup (address);
  }

  if (uri)
    soup_uri_free (uri);

  return effective_address;
}

gboolean
ephy_embed_utils_url_is_empty (const char *location)
{
  gboolean is_empty = FALSE;

  if (location == NULL || 
      location[0] == '\0' || 
      strcmp (location, "about:blank") == 0)
    is_empty = TRUE;
  
  return is_empty;
}