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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 <glib/gconvert.h>
- #include <glib/gmain.h>
- #include <glib/gstring.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;
-
- #define G_IO_CHANNEL_ERROR g_io_channel_error_quark()
-
- typedef enum
- {
- /* Derived from errno */
- G_IO_CHANNEL_ERROR_FBIG,
- G_IO_CHANNEL_ERROR_INVAL,
- G_IO_CHANNEL_ERROR_IO,
- G_IO_CHANNEL_ERROR_ISDIR,
- G_IO_CHANNEL_ERROR_NOSPC,
- G_IO_CHANNEL_ERROR_NXIO,
- G_IO_CHANNEL_ERROR_OVERFLOW,
- G_IO_CHANNEL_ERROR_PIPE,
- /* Other */
- G_IO_CHANNEL_ERROR_FAILED
- } GIOChannelError;
-
- typedef enum
- {
- G_IO_STATUS_ERROR,
- G_IO_STATUS_NORMAL,
- G_IO_STATUS_EOF,
- G_IO_STATUS_AGAIN
- } GIOStatus;
-
- 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;
-
- typedef enum
- {
- G_IO_FLAG_APPEND = 1 << 0,
- G_IO_FLAG_NONBLOCK = 1 << 1,
- G_IO_FLAG_IS_READABLE = 1 << 2, /* Read only flag */
- G_IO_FLAG_IS_WRITEABLE = 1 << 3, /* Read only flag */
- G_IO_FLAG_IS_SEEKABLE = 1 << 4, /* Read only flag */
- G_IO_FLAG_MASK = (1 << 5) - 1,
- G_IO_FLAG_GET_MASK = G_IO_FLAG_MASK,
- G_IO_FLAG_SET_MASK = G_IO_FLAG_APPEND | G_IO_FLAG_NONBLOCK
- } GIOFlags;
-
- struct _GIOChannel
- {
- /*< private >*/
- guint ref_count;
- GIOFuncs *funcs;
-
- gchar *encoding;
- GIConv read_cd;
- GIConv write_cd;
- gchar *line_term; /* String which indicates the end of a line of text */
- guint line_term_len; /* So we can have null in the line term */
-
- gsize buf_size;
- GString *read_buf; /* Raw data from the channel */
- GString *encoded_read_buf; /* Channel data converted to UTF-8 */
- GString *write_buf; /* Data ready to be written to the file */
- gchar partial_write_buf[6]; /* UTF-8 partial characters, null terminated */
-
- /* Group the flags together, immediately after partial_write_buf, to save memory */
-
- guint use_buffer : 1; /* The encoding uses the buffers */
- guint do_encode : 1; /* The encoding uses the GIConv coverters */
- guint close_on_unref : 1; /* Close the channel on final unref */
- guint is_readable : 1; /* Cached GIOFlag */
- guint is_writeable : 1; /* ditto */
- guint is_seekable : 1; /* ditto */
-
- gpointer reserved1;
- gpointer reserved2;
- };
-
- typedef gboolean (*GIOFunc) (GIOChannel *source,
- GIOCondition condition,
- gpointer data);
- struct _GIOFuncs
- {
- GIOStatus (*io_read) (GIOChannel *channel,
- gchar *buf,
- gsize count,
- gsize *bytes_read,
- GError **err);
- GIOStatus (*io_write) (GIOChannel *channel,
- const gchar *buf,
- gsize count,
- gsize *bytes_written,
- GError **err);
- GIOStatus (*io_seek) (GIOChannel *channel,
- gint64 offset,
- GSeekType type,
- GError **err);
- GIOStatus (*io_close) (GIOChannel *channel,
- GError **err);
- GSource* (*io_create_watch) (GIOChannel *channel,
- GIOCondition condition);
- void (*io_free) (GIOChannel *channel);
- GIOStatus (*io_set_flags) (GIOChannel *channel,
- GIOFlags flags,
- GError **err);
- GIOFlags (*io_get_flags) (GIOChannel *channel);
- };
-
- void g_io_channel_init (GIOChannel *channel);
- GIOChannel *g_io_channel_ref (GIOChannel *channel);
- void g_io_channel_unref (GIOChannel *channel);
-
- #ifndef G_DISABLE_DEPRECATED
- GIOError g_io_channel_read (GIOChannel *channel,
- gchar *buf,
- gsize count,
- gsize *bytes_read);
- GIOError g_io_channel_write (GIOChannel *channel,
- const gchar *buf,
- gsize count,
- gsize *bytes_written);
- GIOError g_io_channel_seek (GIOChannel *channel,
- gint64 offset,
- GSeekType type);
- void g_io_channel_close (GIOChannel *channel);
- #endif /* G_DISABLE_DEPRECATED */
-
- GIOStatus g_io_channel_shutdown (GIOChannel *channel,
- gboolean flush,
- GError **err);
- guint g_io_add_watch_full (GIOChannel *channel,
- gint priority,
- GIOCondition condition,
- GIOFunc func,
- gpointer user_data,
- GDestroyNotify notify);
- GSource * g_io_create_watch (GIOChannel *channel,
- GIOCondition condition);
- guint g_io_add_watch (GIOChannel *channel,
- GIOCondition condition,
- GIOFunc func,
- gpointer user_data);
-
- /* character encoding conversion involved functions.
- */
-
- void g_io_channel_set_buffer_size (GIOChannel *channel,
- gsize size);
- gsize g_io_channel_get_buffer_size (GIOChannel *channel);
- GIOCondition g_io_channel_get_buffer_condition (GIOChannel *channel);
- GIOStatus g_io_channel_set_flags (GIOChannel *channel,
- GIOFlags flags,
- GError **error);
- GIOFlags g_io_channel_get_flags (GIOChannel *channel);
- void g_io_channel_set_line_term (GIOChannel *channel,
- const gchar *line_term,
- gint length);
- G_CONST_RETURN gchar* g_io_channel_get_line_term (GIOChannel *channel,
- gint *length);
- void g_io_channel_set_buffered (GIOChannel *channel,
- gboolean buffered);
- gboolean g_io_channel_get_buffered (GIOChannel *channel);
- GIOStatus g_io_channel_set_encoding (GIOChannel *channel,
- const gchar *encoding,
- GError **error);
- G_CONST_RETURN gchar* g_io_channel_get_encoding (GIOChannel *channel);
- void g_io_channel_set_close_on_unref (GIOChannel *channel,
- gboolean do_close);
- gboolean g_io_channel_get_close_on_unref (GIOChannel *channel);
-
-
- GIOStatus g_io_channel_flush (GIOChannel *channel,
- GError **error);
- GIOStatus g_io_channel_read_line (GIOChannel *channel,
- gchar **str_return,
- gsize *length,
- gsize *terminator_pos,
- GError **error);
- GIOStatus g_io_channel_read_line_string (GIOChannel *channel,
- GString *buffer,
- gsize *terminator_pos,
- GError **error);
- GIOStatus g_io_channel_read_to_end (GIOChannel *channel,
- gchar **str_return,
- gsize *length,
- GError **error);
- GIOStatus g_io_channel_read_chars (GIOChannel *channel,
- gchar *buf,
- gsize count,
- gsize *bytes_read,
- GError **error);
- GIOStatus g_io_channel_read_unichar (GIOChannel *channel,
- gunichar *thechar,
- GError **error);
- GIOStatus g_io_channel_write_chars (GIOChannel *channel,
- const gchar *buf,
- gssize count,
- gsize *bytes_written,
- GError **error);
- GIOStatus g_io_channel_write_unichar (GIOChannel *channel,
- gunichar thechar,
- GError **error);
- GIOStatus g_io_channel_seek_position (GIOChannel *channel,
- gint64 offset,
- GSeekType type,
- GError **error);
- #ifdef G_OS_WIN32
- #define g_io_channel_new_file g_io_channel_new_file_utf8
- #endif
-
- GIOChannel* g_io_channel_new_file (const gchar *filename,
- const gchar *mode,
- GError **error);
-
- /* Error handling */
-
- GQuark g_io_channel_error_quark (void);
- GIOChannelError g_io_channel_error_from_errno (gint en);
-
- /* On Unix, IO channels created with this function for any file
- * descriptor or socket.
- *
- * On Win32, this can be used either 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),
- * or for Winsock SOCKETs. If the parameter is a legal file
- * descriptor, it is assumed to be such, otherwise it should be a
- * SOCKET. This relies on SOCKETs and file descriptors not
- * overlapping. If you want to be certain, call either
- * g_io_channel_win32_new_fd() or g_io_channel_win32_new_socket()
- * instead as appropriate.
- *
- * 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 Win32 file HANDLEs.
- */
- GIOChannel* g_io_channel_unix_new (int fd);
- gint g_io_channel_unix_get_fd (GIOChannel *channel);
-
-
- /* Hook for GClosure / GSource integration. Don't touch */
- GLIB_VAR GSourceFuncs g_io_watch_funcs;
-
- #ifdef G_OS_WIN32
-
- /* You can use this "pseudo file descriptor" in a GPollFD to add
- * polling for Windows messages. GTK applications should not do that.
- */
-
- #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()
- * from the underlying file descriptor. For SOCKETs, it is possible to call
- * recv().
- */
- 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.
- */
- gint g_io_channel_win32_poll (GPollFD *fds,
- gint n_fds,
- gint timeout_);
-
- /* Create an IO channel for Windows messages for window handle hwnd. */
- GIOChannel *g_io_channel_win32_new_messages (guint hwnd);
-
- /* Create an IO channel for C runtime (emulated Unix-like) file
- * descriptors. After calling g_io_add_watch() on a IO channel
- * returned by this function, you shouldn't call read() on the file
- * descriptor. This is because adding polling for a file descriptor is
- * implemented on Win32 by starting a thread that sits blocked in a
- * read() from the file descriptor most of the time. All reads from
- * the file descriptor should be done by this internal GLib
- * thread. Your code should call only g_io_channel_read().
- */
- GIOChannel* g_io_channel_win32_new_fd (gint fd);
-
- /* Get the C runtime file descriptor of a channel. */
- gint g_io_channel_win32_get_fd (GIOChannel *channel);
-
- /* Create an IO channel for a winsock socket. The parameter should be
- * a SOCKET. Contrary to IO channels for file descriptors (on *Win32),
- * you can use normal recv() or recvfrom() on sockets even if GLib
- * is polling them.
- */
- GIOChannel *g_io_channel_win32_new_socket (gint socket);
-
- #endif
-
- G_END_DECLS
-
- #endif /* __G_IOCHANNEL_H__ */
-