Import Upstream version 2.72.4
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commit
4ef3ff9793
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442
gio/gcontenttype-win32.c
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442
gio/gcontenttype-win32.c
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/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */
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/* GIO - GLib Input, Output and Streaming Library
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*
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* Copyright (C) 2006-2007 Red Hat, Inc.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General
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* Public License along with this library; if not, see <http://www.gnu.org/licenses/>.
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*
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* Author: Alexander Larsson <alexl@redhat.com>
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*/
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#include "config.h"
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#include <sys/types.h>
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#include <stdlib.h>
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#include <string.h>
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#include <stdio.h>
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#include "gcontenttype.h"
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#include "gthemedicon.h"
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#include "gicon.h"
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#include "glibintl.h"
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#include <windows.h>
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static char *
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get_registry_classes_key (const char *subdir,
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const wchar_t *key_name)
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{
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wchar_t *wc_key;
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HKEY reg_key = NULL;
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DWORD key_type;
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DWORD nbytes;
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char *value_utf8;
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value_utf8 = NULL;
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nbytes = 0;
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wc_key = g_utf8_to_utf16 (subdir, -1, NULL, NULL, NULL);
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if (RegOpenKeyExW (HKEY_CLASSES_ROOT, wc_key, 0,
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KEY_QUERY_VALUE, ®_key) == ERROR_SUCCESS &&
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RegQueryValueExW (reg_key, key_name, 0,
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&key_type, NULL, &nbytes) == ERROR_SUCCESS &&
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(key_type == REG_SZ || key_type == REG_EXPAND_SZ))
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{
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wchar_t *wc_temp = g_new (wchar_t, (nbytes+1)/2 + 1);
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RegQueryValueExW (reg_key, key_name, 0,
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&key_type, (LPBYTE) wc_temp, &nbytes);
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wc_temp[nbytes/2] = '\0';
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if (key_type == REG_EXPAND_SZ)
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{
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wchar_t dummy[1];
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DWORD len = ExpandEnvironmentStringsW (wc_temp, dummy, 1);
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if (len > 0)
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{
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wchar_t *wc_temp_expanded = g_new (wchar_t, len);
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if (ExpandEnvironmentStringsW (wc_temp, wc_temp_expanded, len) == len)
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value_utf8 = g_utf16_to_utf8 (wc_temp_expanded, -1, NULL, NULL, NULL);
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g_free (wc_temp_expanded);
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}
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}
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else
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{
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value_utf8 = g_utf16_to_utf8 (wc_temp, -1, NULL, NULL, NULL);
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}
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g_free (wc_temp);
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}
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g_free (wc_key);
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if (reg_key != NULL)
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RegCloseKey (reg_key);
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return value_utf8;
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}
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/*< private >*/
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void
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g_content_type_set_mime_dirs (const gchar * const *dirs)
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{
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/* noop on Windows */
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}
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/*< private >*/
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const gchar * const *
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g_content_type_get_mime_dirs (void)
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{
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const gchar * const *mime_dirs = { NULL };
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return mime_dirs;
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}
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gboolean
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g_content_type_equals (const gchar *type1,
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const gchar *type2)
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{
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char *progid1, *progid2;
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gboolean res;
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g_return_val_if_fail (type1 != NULL, FALSE);
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g_return_val_if_fail (type2 != NULL, FALSE);
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if (g_ascii_strcasecmp (type1, type2) == 0)
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return TRUE;
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res = FALSE;
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progid1 = get_registry_classes_key (type1, NULL);
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progid2 = get_registry_classes_key (type2, NULL);
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if (progid1 != NULL && progid2 != NULL &&
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strcmp (progid1, progid2) == 0)
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res = TRUE;
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g_free (progid1);
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g_free (progid2);
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return res;
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}
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gboolean
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g_content_type_is_a (const gchar *type,
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const gchar *supertype)
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{
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gboolean res;
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char *perceived_type;
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char *perceived_supertype;
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g_return_val_if_fail (type != NULL, FALSE);
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g_return_val_if_fail (supertype != NULL, FALSE);
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if (g_content_type_equals (type, supertype))
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return TRUE;
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perceived_type = get_registry_classes_key (type, L"PerceivedType");
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perceived_supertype = get_registry_classes_key (supertype, L"PerceivedType");
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res = perceived_type && perceived_supertype &&
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strcmp (perceived_type, perceived_supertype) == 0;
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g_free (perceived_type);
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g_free (perceived_supertype);
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return res;
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}
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gboolean
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g_content_type_is_mime_type (const gchar *type,
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const gchar *mime_type)
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{
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gchar *content_type;
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gboolean ret;
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g_return_val_if_fail (type != NULL, FALSE);
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g_return_val_if_fail (mime_type != NULL, FALSE);
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content_type = g_content_type_from_mime_type (mime_type);
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ret = g_content_type_is_a (type, content_type);
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g_free (content_type);
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return ret;
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}
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gboolean
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g_content_type_is_unknown (const gchar *type)
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{
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g_return_val_if_fail (type != NULL, FALSE);
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return strcmp ("*", type) == 0;
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}
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gchar *
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g_content_type_get_description (const gchar *type)
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{
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char *progid;
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char *description;
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g_return_val_if_fail (type != NULL, NULL);
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progid = get_registry_classes_key (type, NULL);
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if (progid)
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{
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description = get_registry_classes_key (progid, NULL);
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g_free (progid);
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if (description)
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return description;
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}
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if (g_content_type_is_unknown (type))
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return g_strdup (_("Unknown type"));
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return g_strdup_printf (_("%s filetype"), type);
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}
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gchar *
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g_content_type_get_mime_type (const gchar *type)
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{
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char *mime;
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g_return_val_if_fail (type != NULL, NULL);
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mime = get_registry_classes_key (type, L"Content Type");
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if (mime)
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return mime;
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else if (g_content_type_is_unknown (type))
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return g_strdup ("application/octet-stream");
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else if (*type == '.')
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return g_strdup_printf ("application/x-ext-%s", type+1);
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else if (strcmp ("inode/directory", type) == 0)
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return g_strdup (type);
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/* TODO: Map "image" to "image/ *", etc? */
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return g_strdup ("application/octet-stream");
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}
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G_LOCK_DEFINE_STATIC (_type_icons);
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static GHashTable *_type_icons = NULL;
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GIcon *
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g_content_type_get_icon (const gchar *type)
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{
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GIcon *themed_icon;
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char *name = NULL;
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g_return_val_if_fail (type != NULL, NULL);
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/* In the Registry icons are the default value of
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HKEY_CLASSES_ROOT\<progid>\DefaultIcon with typical values like:
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<type>: <value>
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REG_EXPAND_SZ: %SystemRoot%\System32\Wscript.exe,3
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REG_SZ: shimgvw.dll,3
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*/
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G_LOCK (_type_icons);
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if (!_type_icons)
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_type_icons = g_hash_table_new (g_str_hash, g_str_equal);
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name = g_hash_table_lookup (_type_icons, type);
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if (!name && type[0] == '.')
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{
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/* double lookup by extension */
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gchar *key = get_registry_classes_key (type, NULL);
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if (!key)
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key = g_strconcat (type+1, "file\\DefaultIcon", NULL);
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else
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{
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gchar *key2 = g_strconcat (key, "\\DefaultIcon", NULL);
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g_free (key);
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key = key2;
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}
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name = get_registry_classes_key (key, NULL);
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if (name && strcmp (name, "%1") == 0)
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{
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g_free (name);
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name = NULL;
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}
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if (name)
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g_hash_table_insert (_type_icons, g_strdup (type), g_strdup (name));
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g_free (key);
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}
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if (!name)
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{
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/* if no icon found, fall back to standard generic names */
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if (strcmp (type, "inode/directory") == 0)
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name = "folder";
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else if (g_content_type_can_be_executable (type))
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name = "system-run";
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else
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name = "text-x-generic";
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g_hash_table_insert (_type_icons, g_strdup (type), g_strdup (name));
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}
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themed_icon = g_themed_icon_new (name);
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G_UNLOCK (_type_icons);
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return G_ICON (themed_icon);
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}
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GIcon *
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g_content_type_get_symbolic_icon (const gchar *type)
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{
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return g_content_type_get_icon (type);
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}
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gchar *
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g_content_type_get_generic_icon_name (const gchar *type)
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{
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return NULL;
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}
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gboolean
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g_content_type_can_be_executable (const gchar *type)
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{
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g_return_val_if_fail (type != NULL, FALSE);
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if (strcmp (type, ".exe") == 0 ||
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strcmp (type, ".com") == 0 ||
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strcmp (type, ".bat") == 0)
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return TRUE;
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/* TODO: Also look at PATHEXT, which lists the extensions for
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* "scripts" in addition to those for true binary executables.
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*
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* (PATHEXT=.COM;.EXE;.BAT;.CMD;.VBS;.VBE;.JS;.JSE;.WSF;.WSH for me
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* right now, for instance). And in a sense, all associated file
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* types are "executable" on Windows... You can just type foo.jpg as
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* a command name in cmd.exe, and it will run the application
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* associated with .jpg. Hard to say what this API actually means
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* with "executable".
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*/
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return FALSE;
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}
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static gboolean
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looks_like_text (const guchar *data,
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gsize data_size)
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{
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gsize i;
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guchar c;
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for (i = 0; i < data_size; i++)
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{
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c = data[i];
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if (g_ascii_iscntrl (c) && !g_ascii_isspace (c) && c != '\b')
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return FALSE;
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}
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return TRUE;
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}
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gchar *
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g_content_type_from_mime_type (const gchar *mime_type)
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{
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char *key, *content_type;
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g_return_val_if_fail (mime_type != NULL, NULL);
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/* This is a hack to allow directories to have icons in filechooser */
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if (strcmp ("inode/directory", mime_type) == 0)
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return g_strdup (mime_type);
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key = g_strconcat ("MIME\\DataBase\\Content Type\\", mime_type, NULL);
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content_type = get_registry_classes_key (key, L"Extension");
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g_free (key);
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return content_type ? g_steal_pointer (&content_type) : g_strdup ("*");
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}
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gchar *
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g_content_type_guess (const gchar *filename,
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const guchar *data,
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gsize data_size,
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gboolean *result_uncertain)
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{
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char *basename;
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char *type;
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char *dot;
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size_t i;
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type = NULL;
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if (result_uncertain)
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*result_uncertain = FALSE;
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/* our test suite and potentially other code used -1 in the past, which is
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* not documented and not allowed; guard against that */
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g_return_val_if_fail (data_size != (gsize) -1, g_strdup ("*"));
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if (filename)
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{
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i = strlen (filename);
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if (i > 0 && filename[i - 1] == G_DIR_SEPARATOR)
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{
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type = g_strdup ("inode/directory");
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if (result_uncertain)
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*result_uncertain = TRUE;
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}
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else
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{
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basename = g_path_get_basename (filename);
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dot = strrchr (basename, '.');
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if (dot)
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type = g_strdup (dot);
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g_free (basename);
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}
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}
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if (type)
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return type;
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if (data && looks_like_text (data, data_size))
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return g_strdup (".txt");
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return g_strdup ("*");
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}
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GList *
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g_content_types_get_registered (void)
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{
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DWORD index;
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wchar_t keyname[256];
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DWORD key_len;
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char *key_utf8;
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GList *types;
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types = NULL;
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index = 0;
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key_len = 256;
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while (RegEnumKeyExW(HKEY_CLASSES_ROOT,
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index,
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keyname,
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&key_len,
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NULL,
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NULL,
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NULL,
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NULL) == ERROR_SUCCESS)
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{
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key_utf8 = g_utf16_to_utf8 (keyname, -1, NULL, NULL, NULL);
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if (key_utf8)
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{
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if (*key_utf8 == '.')
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types = g_list_prepend (types, key_utf8);
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else
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g_free (key_utf8);
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}
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index++;
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key_len = 256;
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}
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return g_list_reverse (types);
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}
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gchar **
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g_content_type_guess_for_tree (GFile *root)
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{
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/* FIXME: implement */
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return NULL;
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}
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