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+/* GLIB - Library of useful routines for C programming
+ * Copyright (C) 1995-1998 Peter Mattis, Spencer Kimball and Josh MacDonald
+ * Copyright (C) 1998-1999 Tor Lillqvist
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library 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
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ * Boston, MA 02111-1307, USA.
+ */
+
+/*
+ * Modified by the GLib Team and others 1997-2000. See the AUTHORS
+ * file for a list of people on the GLib Team. See the ChangeLog
+ * files for a list of changes. These files are distributed with
+ * GLib at ftp://ftp.gtk.org/pub/gtk/.
+ */
+
+/*
+ * MT safe for the unix part, FIXME: make the win32 part MT safe as well.
+ */
+
+#include "config.h"
+
+#include "glibconfig.h"
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+#include <wchar.h>
+#include <errno.h>
+
+#define STRICT /* Strict typing, please */
+#include <windows.h>
+#undef STRICT
+#ifndef G_WITH_CYGWIN
+#include <direct.h>
+#endif
+#include <errno.h>
+#include <ctype.h>
+#if defined(_MSC_VER) || defined(__DMC__)
+# include <io.h>
+#endif /* _MSC_VER || __DMC__ */
+
+#include "glib.h"
+
+#ifdef G_WITH_CYGWIN
+#include <sys/cygwin.h>
+#endif
+
+#ifndef G_WITH_CYGWIN
+
+gint
+g_win32_ftruncate (gint fd,
+ guint size)
+{
+ return _chsize (fd, size);
+}
+
+#endif
+
+/**
+ * g_win32_getlocale:
+ *
+ * The setlocale() function in the Microsoft C library uses locale
+ * names of the form "English_United States.1252" etc. We want the
+ * UNIXish standard form "en_US", "zh_TW" etc. This function gets the
+ * current thread locale from Windows - without any encoding info -
+ * and returns it as a string of the above form for use in forming
+ * file names etc. The returned string should be deallocated with
+ * g_free().
+ *
+ * Returns: newly-allocated locale name.
+ **/
+
+#ifndef SUBLANG_SERBIAN_LATIN_BA
+#define SUBLANG_SERBIAN_LATIN_BA 0x06
+#endif
+
+gchar *
+g_win32_getlocale (void)
+{
+ LCID lcid;
+ LANGID langid;
+ gchar *ev;
+ gint primary, sub;
+ char iso639[10];
+ char iso3166[10];
+ const gchar *script = NULL;
+
+ /* Let the user override the system settings through environment
+ * variables, as on POSIX systems. Note that in GTK+ applications
+ * since GTK+ 2.10.7 setting either LC_ALL or LANG also sets the
+ * Win32 locale and C library locale through code in gtkmain.c.
+ */
+ if (((ev = getenv ("LC_ALL")) != NULL && ev[0] != '\0')
+ || ((ev = getenv ("LC_MESSAGES")) != NULL && ev[0] != '\0')
+ || ((ev = getenv ("LANG")) != NULL && ev[0] != '\0'))
+ return g_strdup (ev);
+
+ lcid = GetThreadLocale ();
+
+ if (!GetLocaleInfo (lcid, LOCALE_SISO639LANGNAME, iso639, sizeof (iso639)) ||
+ !GetLocaleInfo (lcid, LOCALE_SISO3166CTRYNAME, iso3166, sizeof (iso3166)))
+ return g_strdup ("C");
+
+ /* Strip off the sorting rules, keep only the language part. */
+ langid = LANGIDFROMLCID (lcid);
+
+ /* Split into language and territory part. */
+ primary = PRIMARYLANGID (langid);
+ sub = SUBLANGID (langid);
+
+ /* Handle special cases */
+ switch (primary)
+ {
+ case LANG_AZERI:
+ switch (sub)
+ {
+ case SUBLANG_AZERI_LATIN:
+ script = "@Latn";
+ break;
+ case SUBLANG_AZERI_CYRILLIC:
+ script = "@Cyrl";
+ break;
+ }
+ break;
+ case LANG_SERBIAN: /* LANG_CROATIAN == LANG_SERBIAN */
+ switch (sub)
+ {
+ case SUBLANG_SERBIAN_LATIN:
+ case 0x06: /* Serbian (Latin) - Bosnia and Herzegovina */
+ script = "@Latn";
+ break;
+ }
+ break;
+ case LANG_UZBEK:
+ switch (sub)
+ {
+ case SUBLANG_UZBEK_LATIN:
+ script = "@Latn";
+ break;
+ case SUBLANG_UZBEK_CYRILLIC:
+ script = "@Cyrl";
+ break;
+ }
+ break;
+ }
+ return g_strconcat (iso639, "_", iso3166, script, NULL);
+}
+
+/**
+ * g_win32_error_message:
+ * @error: error code.
+ *
+ * Translate a Win32 error code (as returned by GetLastError()) into
+ * the corresponding message. The message is either language neutral,
+ * or in the thread's language, or the user's language, the system's
+ * language, or US English (see docs for FormatMessage()). The
+ * returned string is in UTF-8. It should be deallocated with
+ * g_free().
+ *
+ * Returns: newly-allocated error message
+ **/
+gchar *
+g_win32_error_message (gint error)
+{
+ gchar *retval;
+ wchar_t *msg = NULL;
+ int nchars;
+
+ FormatMessageW (FORMAT_MESSAGE_ALLOCATE_BUFFER
+ |FORMAT_MESSAGE_IGNORE_INSERTS
+ |FORMAT_MESSAGE_FROM_SYSTEM,
+ NULL, error, 0,
+ (LPWSTR) &msg, 0, NULL);
+ if (msg != NULL)
+ {
+ nchars = wcslen (msg);
+
+ if (nchars > 2 && msg[nchars-1] == '\n' && msg[nchars-2] == '\r')
+ msg[nchars-2] = '\0';
+
+ retval = g_utf16_to_utf8 (msg, -1, NULL, NULL, NULL);
+
+ LocalFree (msg);
+ }
+ else
+ retval = g_strdup ("");
+
+ return retval;
+}
+
+/**
+ * g_win32_get_package_installation_directory_of_module:
+ * @hmodule: The Win32 handle for a DLL loaded into the current process, or %NULL
+ *
+ * This function tries to determine the installation directory of a
+ * software package based on the location of a DLL of the software
+ * package.
+ *
+ * @hmodule should be the handle of a loaded DLL or %NULL. The
+ * function looks up the directory that DLL was loaded from. If
+ * @hmodule is NULL, the directory the main executable of the current
+ * process is looked up. If that directory's last component is "bin"
+ * or "lib", its parent directory is returned, otherwise the directory
+ * itself.
+ *
+ * It thus makes sense to pass only the handle to a "public" DLL of a
+ * software package to this function, as such DLLs typically are known
+ * to be installed in a "bin" or occasionally "lib" subfolder of the
+ * installation folder. DLLs that are of the dynamically loaded module
+ * or plugin variety are often located in more private locations
+ * deeper down in the tree, from which it is impossible for GLib to
+ * deduce the root of the package installation.
+ *
+ * The typical use case for this function is to have a DllMain() that
+ * saves the handle for the DLL. Then when code in the DLL needs to
+ * construct names of files in the installation tree it calls this
+ * function passing the DLL handle.
+ *
+ * Returns: a string containing the guessed installation directory for
+ * the software package @hmodule is from. The string is in the GLib
+ * file name encoding, i.e. UTF-8. The return value should be freed
+ * with g_free() when not needed any longer. If the function fails
+ * %NULL is returned.
+ *
+ * Since: 2.16
+ */
+gchar *
+g_win32_get_package_installation_directory_of_module (gpointer hmodule)
+{
+ gchar *retval;
+ gchar *p;
+ wchar_t wc_fn[MAX_PATH];
+
+ if (!GetModuleFileNameW (hmodule, wc_fn, MAX_PATH))
+ return NULL;
+
+ retval = g_utf16_to_utf8 (wc_fn, -1, NULL, NULL, NULL);
+
+ if ((p = strrchr (retval, G_DIR_SEPARATOR)) != NULL)
+ *p = '\0';
+
+ p = strrchr (retval, G_DIR_SEPARATOR);
+ if (p && (g_ascii_strcasecmp (p + 1, "bin") == 0 ||
+ g_ascii_strcasecmp (p + 1, "lib") == 0))
+ *p = '\0';
+
+#ifdef G_WITH_CYGWIN
+ /* In Cygwin we need to have POSIX paths */
+ {
+ gchar tmp[MAX_PATH];
+
+ cygwin_conv_to_posix_path (retval, tmp);
+ g_free (retval);
+ retval = g_strdup (tmp);
+ }
+#endif
+
+ return retval;
+}
+
+static gchar *
+get_package_directory_from_module (const gchar *module_name)
+{
+ static GHashTable *module_dirs = NULL;
+ G_LOCK_DEFINE_STATIC (module_dirs);
+ HMODULE hmodule = NULL;
+ gchar *fn;
+
+ G_LOCK (module_dirs);
+
+ if (module_dirs == NULL)
+ module_dirs = g_hash_table_new (g_str_hash, g_str_equal);
+
+ fn = g_hash_table_lookup (module_dirs, module_name ? module_name : "");
+
+ if (fn)
+ {
+ G_UNLOCK (module_dirs);
+ return g_strdup (fn);
+ }
+
+ if (module_name)
+ {
+ wchar_t *wc_module_name = g_utf8_to_utf16 (module_name, -1, NULL, NULL, NULL);
+ hmodule = GetModuleHandleW (wc_module_name);
+ g_free (wc_module_name);
+
+ if (!hmodule)
+ {
+ G_UNLOCK (module_dirs);
+ return NULL;
+ }
+ }
+
+ fn = g_win32_get_package_installation_directory_of_module (hmodule);
+
+ if (fn == NULL)
+ {
+ G_UNLOCK (module_dirs);
+ return NULL;
+ }
+
+ g_hash_table_insert (module_dirs, module_name ? g_strdup (module_name) : "", fn);
+
+ G_UNLOCK (module_dirs);
+
+ return g_strdup (fn);
+}
+
+/**
+ * g_win32_get_package_installation_directory:
+ * @package: You should pass %NULL for this.
+ * @dll_name: The name of a DLL that a package provides in UTF-8, or %NULL.
+ *
+ * Try to determine the installation directory for a software package.
+ *
+ * This function is deprecated. Use
+ * g_win32_get_package_installation_directory_of_module() instead.
+ *
+ * The use of @package is deprecated. You should always pass %NULL. A
+ * warning is printed if non-NULL is passed as @package.
+ *
+ * The original intended use of @package was for a short identifier of
+ * the package, typically the same identifier as used for
+ * <literal>GETTEXT_PACKAGE</literal> in software configured using GNU
+ * autotools. The function first looks in the Windows Registry for the
+ * value <literal>&num;InstallationDirectory</literal> in the key
+ * <literal>&num;HKLM\Software\@package</literal>, and if that value
+ * exists and is a string, returns that.
+ *
+ * It is strongly recommended that packagers of GLib-using libraries
+ * for Windows do not store installation paths in the Registry to be
+ * used by this function as that interfers with having several
+ * parallel installations of the library. Enabling multiple
+ * installations of different versions of some GLib-using library, or
+ * GLib itself, is desirable for various reasons.
+ *
+ * For this reason it is recommeded to always pass %NULL as
+ * @package to this function, to avoid the temptation to use the
+ * Registry. In version 2.20 of GLib the @package parameter
+ * will be ignored and this function won't look in the Registry at all.
+ *
+ * If @package is %NULL, or the above value isn't found in the
+ * Registry, but @dll_name is non-%NULL, it should name a DLL loaded
+ * into the current process. Typically that would be the name of the
+ * DLL calling this function, looking for its installation
+ * directory. The function then asks Windows what directory that DLL
+ * was loaded from. If that directory's last component is "bin" or
+ * "lib", the parent directory is returned, otherwise the directory
+ * itself. If that DLL isn't loaded, the function proceeds as if
+ * @dll_name was %NULL.
+ *
+ * If both @package and @dll_name are %NULL, the directory from where
+ * the main executable of the process was loaded is used instead in
+ * the same way as above.
+ *
+ * Returns: a string containing the installation directory for
+ * @package. The string is in the GLib file name encoding,
+ * i.e. UTF-8. The return value should be freed with g_free() when not
+ * needed any longer. If the function fails %NULL is returned.
+ *
+ * Deprecated: 2.18: Pass the HMODULE of a DLL or EXE to
+ * g_win32_get_package_installation_directory_of_module() instead.
+ **/
+
+ gchar *
+g_win32_get_package_installation_directory_utf8 (const gchar *package,
+ const gchar *dll_name)
+{
+ gchar *result = NULL;
+
+ if (package != NULL)
+ g_warning ("Passing a non-NULL package to g_win32_get_package_installation_directory() is deprecated and it is ignored.");
+
+ if (dll_name != NULL)
+ result = get_package_directory_from_module (dll_name);
+
+ if (result == NULL)
+ result = get_package_directory_from_module (NULL);
+
+ return result;
+}
+
+#if !defined (_WIN64)
+
+/* DLL ABI binary compatibility version that uses system codepage file names */
+
+gchar *
+g_win32_get_package_installation_directory (const gchar *package,
+ const gchar *dll_name)
+{
+ gchar *utf8_package = NULL, *utf8_dll_name = NULL;
+ gchar *utf8_retval, *retval;
+
+ if (package != NULL)
+ utf8_package = g_locale_to_utf8 (package, -1, NULL, NULL, NULL);
+
+ if (dll_name != NULL)
+ utf8_dll_name = g_locale_to_utf8 (dll_name, -1, NULL, NULL, NULL);
+
+ utf8_retval =
+ g_win32_get_package_installation_directory_utf8 (utf8_package,
+ utf8_dll_name);
+
+ retval = g_locale_from_utf8 (utf8_retval, -1, NULL, NULL, NULL);
+
+ g_free (utf8_package);
+ g_free (utf8_dll_name);
+ g_free (utf8_retval);
+
+ return retval;
+}
+
+#endif
+
+/**
+ * g_win32_get_package_installation_subdirectory:
+ * @package: You should pass %NULL for this.
+ * @dll_name: The name of a DLL that a package provides, in UTF-8, or %NULL.
+ * @subdir: A subdirectory of the package installation directory, also in UTF-8
+ *
+ * This function is deprecated. Use
+ * g_win32_get_package_installation_directory_of_module() and
+ * g_build_filename() instead.
+ *
+ * Returns a newly-allocated string containing the path of the
+ * subdirectory @subdir in the return value from calling
+ * g_win32_get_package_installation_directory() with the @package and
+ * @dll_name parameters. See the documentation for
+ * g_win32_get_package_installation_directory() for more details. In
+ * particular, note that it is deprecated to pass anything except NULL
+ * as @package.
+ *
+ * Returns: a string containing the complete path to @subdir inside
+ * the installation directory of @package. The returned string is in
+ * the GLib file name encoding, i.e. UTF-8. The return value should be
+ * freed with g_free() when no longer needed. If something goes wrong,
+ * %NULL is returned.
+ *
+ * Deprecated: 2.18: Pass the HMODULE of a DLL or EXE to
+ * g_win32_get_package_installation_directory_of_module() instead, and
+ * then construct a subdirectory pathname with g_build_filename().
+ **/
+
+gchar *
+g_win32_get_package_installation_subdirectory_utf8 (const gchar *package,
+ const gchar *dll_name,
+ const gchar *subdir)
+{
+ gchar *prefix;
+ gchar *dirname;
+
+ prefix = g_win32_get_package_installation_directory_utf8 (package, dll_name);
+
+ dirname = g_build_filename (prefix, subdir, NULL);
+ g_free (prefix);
+
+ return dirname;
+}
+
+#if !defined (_WIN64)
+
+/* DLL ABI binary compatibility version that uses system codepage file names */
+
+gchar *
+g_win32_get_package_installation_subdirectory (const gchar *package,
+ const gchar *dll_name,
+ const gchar *subdir)
+{
+ gchar *prefix;
+ gchar *dirname;
+
+ prefix = g_win32_get_package_installation_directory (package, dll_name);
+
+ dirname = g_build_filename (prefix, subdir, NULL);
+ g_free (prefix);
+
+ return dirname;
+}
+
+#endif
+
+static guint windows_version;
+
+static void
+g_win32_windows_version_init (void)
+{
+ static gboolean beenhere = FALSE;
+
+ if (!beenhere)
+ {
+ beenhere = TRUE;
+ windows_version = GetVersion ();
+
+ if (windows_version & 0x80000000)
+ g_error ("This version of GLib requires NT-based Windows.");
+ }
+}
+
+void
+_g_win32_thread_init (void)
+{
+ g_win32_windows_version_init ();
+}
+
+/**
+ * g_win32_get_windows_version:
+ *
+ * Returns version information for the Windows operating system the
+ * code is running on. See MSDN documentation for the GetVersion()
+ * function. To summarize, the most significant bit is one on Win9x,
+ * and zero on NT-based systems. Since version 2.14, GLib works only
+ * on NT-based systems, so checking whether your are running on Win9x
+ * in your own software is moot. The least significant byte is 4 on
+ * Windows NT 4, and 5 on Windows XP. Software that needs really
+ * detailled version and feature information should use Win32 API like
+ * GetVersionEx() and VerifyVersionInfo().
+ *
+ * Returns: The version information.
+ *
+ * Since: 2.6
+ **/
+guint
+g_win32_get_windows_version (void)
+{
+ g_win32_windows_version_init ();
+
+ return windows_version;
+}
+
+/**
+ * g_win32_locale_filename_from_utf8:
+ * @utf8filename: a UTF-8 encoded filename.
+ *
+ * Converts a filename from UTF-8 to the system codepage.
+ *
+ * On NT-based Windows, on NTFS file systems, file names are in
+ * Unicode. It is quite possible that Unicode file names contain
+ * characters not representable in the system codepage. (For instance,
+ * Greek or Cyrillic characters on Western European or US Windows
+ * installations, or various less common CJK characters on CJK Windows
+ * installations.)
+ *
+ * In such a case, and if the filename refers to an existing file, and
+ * the file system stores alternate short (8.3) names for directory
+ * entries, the short form of the filename is returned. Note that the
+ * "short" name might in fact be longer than the Unicode name if the
+ * Unicode name has very short pathname components containing
+ * non-ASCII characters. If no system codepage name for the file is
+ * possible, %NULL is returned.
+ *
+ * The return value is dynamically allocated and should be freed with
+ * g_free() when no longer needed.
+ *
+ * Return value: The converted filename, or %NULL on conversion
+ * failure and lack of short names.
+ *
+ * Since: 2.8
+ */
+gchar *
+g_win32_locale_filename_from_utf8 (const gchar *utf8filename)
+{
+ gchar *retval = g_locale_from_utf8 (utf8filename, -1, NULL, NULL, NULL);
+
+ if (retval == NULL)
+ {
+ /* Conversion failed, so convert to wide chars, check if there
+ * is a 8.3 version, and use that.
+ */
+ wchar_t *wname = g_utf8_to_utf16 (utf8filename, -1, NULL, NULL, NULL);
+ if (wname != NULL)
+ {
+ wchar_t wshortname[MAX_PATH + 1];
+ if (GetShortPathNameW (wname, wshortname, G_N_ELEMENTS (wshortname)))
+ {
+ gchar *tem = g_utf16_to_utf8 (wshortname, -1, NULL, NULL, NULL);
+ retval = g_locale_from_utf8 (tem, -1, NULL, NULL, NULL);
+ g_free (tem);
+ }
+ g_free (wname);
+ }
+ }
+ return retval;
+}
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