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+/* GLIB - Library of useful routines for C programming
+ * Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
+ *
+ * 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/.
+ */
+
+#ifndef __G_IOCHANNEL_H__
+#define __G_IOCHANNEL_H__
+
+#include <gtypes.h>
+
+G_BEGIN_DECLS
+
+/* GIOChannel
+ */
+
+typedef struct _GIOChannel GIOChannel;
+typedef struct _GIOFuncs GIOFuncs;
+typedef enum
+{
+ G_IO_ERROR_NONE,
+ G_IO_ERROR_AGAIN,
+ G_IO_ERROR_INVAL,
+ G_IO_ERROR_UNKNOWN
+} GIOError;
+typedef enum
+{
+ G_SEEK_CUR,
+ G_SEEK_SET,
+ G_SEEK_END
+} GSeekType;
+typedef enum
+{
+ G_IO_IN GLIB_SYSDEF_POLLIN,
+ G_IO_OUT GLIB_SYSDEF_POLLOUT,
+ G_IO_PRI GLIB_SYSDEF_POLLPRI,
+ G_IO_ERR GLIB_SYSDEF_POLLERR,
+ G_IO_HUP GLIB_SYSDEF_POLLHUP,
+ G_IO_NVAL GLIB_SYSDEF_POLLNVAL
+} GIOCondition;
+
+struct _GIOChannel
+{
+ guint channel_flags;
+ guint ref_count;
+ GIOFuncs *funcs;
+};
+
+typedef gboolean (*GIOFunc) (GIOChannel *source,
+ GIOCondition condition,
+ gpointer data);
+struct _GIOFuncs
+{
+ GIOError (*io_read) (GIOChannel *channel,
+ gchar *buf,
+ guint count,
+ guint *bytes_read);
+ GIOError (*io_write) (GIOChannel *channel,
+ gchar *buf,
+ guint count,
+ guint *bytes_written);
+ GIOError (*io_seek) (GIOChannel *channel,
+ gint offset,
+ GSeekType type);
+ void (*io_close) (GIOChannel *channel);
+ guint (*io_add_watch) (GIOChannel *channel,
+ gint priority,
+ GIOCondition condition,
+ GIOFunc func,
+ gpointer user_data,
+ GDestroyNotify notify);
+ void (*io_free) (GIOChannel *channel);
+};
+
+void g_io_channel_init (GIOChannel *channel);
+void g_io_channel_ref (GIOChannel *channel);
+void g_io_channel_unref (GIOChannel *channel);
+GIOError g_io_channel_read (GIOChannel *channel,
+ gchar *buf,
+ guint count,
+ guint *bytes_read);
+GIOError g_io_channel_write (GIOChannel *channel,
+ gchar *buf,
+ guint count,
+ guint *bytes_written);
+GIOError g_io_channel_seek (GIOChannel *channel,
+ gint offset,
+ GSeekType type);
+void g_io_channel_close (GIOChannel *channel);
+guint g_io_add_watch_full (GIOChannel *channel,
+ gint priority,
+ GIOCondition condition,
+ GIOFunc func,
+ gpointer user_data,
+ GDestroyNotify notify);
+guint g_io_add_watch (GIOChannel *channel,
+ GIOCondition condition,
+ GIOFunc func,
+ gpointer user_data);
+
+/* On Unix, IO channels created with this function for any file
+ * descriptor or socket.
+ *
+ * On Win32, use this only for files opened with the MSVCRT (the
+ * Microsoft run-time C library) _open() or _pipe, including file
+ * descriptors 0, 1 and 2 (corresponding to stdin, stdout and stderr).
+ *
+ * The term file descriptor as used in the context of Win32 refers to
+ * the emulated Unix-like file descriptors MSVCRT provides. The native
+ * corresponding concept is file HANDLE. There isn't as of yet a way to
+ * get GIOChannels for file HANDLEs.
+ */
+GIOChannel* g_io_channel_unix_new (int fd);
+gint g_io_channel_unix_get_fd (GIOChannel *channel);
+
+#ifdef G_OS_WIN32
+
+#define G_WIN32_MSG_HANDLE 19981206
+
+/* Use this to get a GPollFD from a GIOChannel, so that you can call
+ * g_io_channel_win32_poll(). After calling this you should only use
+ * g_io_channel_read() to read from the GIOChannel, i.e. never read()
+ * or recv() from the underlying file descriptor or SOCKET.
+ */
+void g_io_channel_win32_make_pollfd (GIOChannel *channel,
+ GIOCondition condition,
+ GPollFD *fd);
+
+/* This can be used to wait a until at least one of the channels is readable.
+ * On Unix you would do a select() on the file descriptors of the channels.
+ * This should probably be available for all platforms?
+ */
+gint g_io_channel_win32_poll (GPollFD *fds,
+ gint n_fds,
+ gint timeout);
+
+/* This is used to add polling for Windows messages. GDK (GTk+) programs
+ * should *not* use this.
+ */
+void g_main_poll_win32_msg_add (gint priority,
+ GPollFD *fd,
+ guint hwnd);
+
+/* An IO channel for Windows messages for window handle hwnd. */
+GIOChannel *g_io_channel_win32_new_messages (guint hwnd);
+
+/* An IO channel for C runtime (emulated Unix-like) file
+ * descriptors. Identical to g_io_channel_unix_new above.
+ * After calling g_io_add_watch() on a IO channel returned
+ * by this function, you shouldn't call read() on the file
+ * descriptor.
+ */
+GIOChannel* g_io_channel_win32_new_fd (int fd);
+
+/* Get the C runtime file descriptor of a channel. */
+gint g_io_channel_win32_get_fd (GIOChannel *channel);
+
+/* An IO channel for a SOCK_STREAM winsock socket. The parameter
+ * should be a SOCKET. After calling g_io_add_watch() on a IO channel
+ * returned by this function, you shouldn't call recv() on the SOCKET.
+ */
+GIOChannel *g_io_channel_win32_new_stream_socket (int socket);
+
+#endif
+
+/* Windows emulation stubs for common Unix functions
+ */
+#ifdef G_OS_WIN32
+# define MAXPATHLEN 1024
+
+#ifdef _MSC_VER
+typedef int pid_t;
+#endif
+
+/*
+ * To get prototypes for the following POSIXish functions, you have to
+ * include the indicated non-POSIX headers. The functions are defined
+ * in OLDNAMES.LIB (MSVC) or -lmoldname-msvc (mingw32).
+ *
+ * getcwd: <direct.h> (MSVC), <io.h> (mingw32)
+ * getpid: <process.h>
+ * access: <io.h>
+ * unlink: <stdio.h> or <io.h>
+ * open, read, write, lseek, close: <io.h>
+ * rmdir: <direct.h>
+ * pipe: <direct.h>
+ */
+
+/* pipe is not in OLDNAMES.LIB or -lmoldname-msvc. */
+#define pipe(phandles) _pipe (phandles, 4096, _O_BINARY)
+
+/* For some POSIX functions that are not provided by the MS runtime,
+ * we provide emulators in glib, which are prefixed with g_win32_.
+ */
+# define ftruncate(fd, size) g_win32_ftruncate (fd, size)
+
+/* -lmingw32 also has emulations for these, but we need our own
+ * for MSVC anyhow, so we might aswell use them always.
+ */
+# define opendir g_win32_opendir
+# define readdir g_win32_readdir
+# define rewinddir g_win32_rewinddir
+# define closedir g_win32_closedir
+# define NAME_MAX 255
+
+struct dirent
+{
+ gchar d_name[NAME_MAX + 1];
+};
+
+struct DIR
+{
+ gchar *dir_name;
+ gboolean just_opened;
+ guint find_file_handle;
+ gpointer find_file_data;
+ struct dirent readdir_result;
+};
+typedef struct DIR DIR;
+
+/* emulation functions */
+extern int g_win32_ftruncate (gint f,
+ guint size);
+DIR* g_win32_opendir (const gchar *dirname);
+struct dirent* g_win32_readdir (DIR *dir);
+void g_win32_rewinddir (DIR *dir);
+gint g_win32_closedir (DIR *dir);
+
+/* The MS setlocale uses locale names of the form "English_United
+ * States.1252" etc. We want the Unixish standard form "en", "zh_TW"
+ * etc. This function gets the current thread locale from Windows 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().
+ */
+gchar * g_win32_getlocale (void);
+
+/* Translate a Win32 error code (as returned by GetLastError()) into
+ * the corresponding message. The returned string should be deallocated
+ * with g_free().
+ */
+gchar * g_win32_error_message (gint error);
+
+#endif /* G_OS_WIN32 */
+
+G_END_DECLS
+
+#endif /* __G_IOCHANNEL_H__ */
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