author | Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> |
Mon, 04 Oct 2010 02:56:42 +0300 | |
changeset 68 | ff3fc7722556 |
parent 18 | 47c74d1534e1 |
permissions | -rw-r--r-- |
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/* GLIB - Library of useful routines for C programming |
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* Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald |
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* Portions copyright (c) 2006-2009 Nokia Corporation. All rights reserved. |
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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 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 Public |
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* License along with this library; if not, write to the |
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330, |
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* Boston, MA 02111-1307, USA. |
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*/ |
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|
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/* |
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* Modified by the GLib Team and others 1997-2000. See the AUTHORS |
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* file for a list of people on the GLib Team. See the ChangeLog |
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* files for a list of changes. These files are distributed with |
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* GLib at ftp://ftp.gtk.org/pub/gtk/. |
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*/ |
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#if defined(G_DISABLE_SINGLE_INCLUDES) && !defined (__GLIB_H_INSIDE__) && !defined (GLIB_COMPILATION) |
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#error "Only <glib.h> can be included directly." |
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#endif |
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#ifndef __G_IOCHANNEL_H__ |
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#define __G_IOCHANNEL_H__ |
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#include <glib/gconvert.h> |
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#include <glib/gmain.h> |
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#include <glib/gstring.h> |
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G_BEGIN_DECLS |
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/* GIOChannel |
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*/ |
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typedef struct _GIOChannel GIOChannel; |
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typedef struct _GIOFuncs GIOFuncs; |
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typedef enum |
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{ |
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G_IO_ERROR_NONE, |
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G_IO_ERROR_AGAIN, |
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G_IO_ERROR_INVAL, |
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G_IO_ERROR_UNKNOWN |
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} GIOError; |
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#define G_IO_CHANNEL_ERROR g_io_channel_error_quark() |
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typedef enum |
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{ |
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/* Derived from errno */ |
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G_IO_CHANNEL_ERROR_FBIG, |
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G_IO_CHANNEL_ERROR_INVAL, |
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G_IO_CHANNEL_ERROR_IO, |
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G_IO_CHANNEL_ERROR_ISDIR, |
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G_IO_CHANNEL_ERROR_NOSPC, |
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G_IO_CHANNEL_ERROR_NXIO, |
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G_IO_CHANNEL_ERROR_OVERFLOW, |
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G_IO_CHANNEL_ERROR_PIPE, |
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/* Other */ |
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G_IO_CHANNEL_ERROR_FAILED |
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} GIOChannelError; |
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typedef enum |
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{ |
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G_IO_STATUS_ERROR, |
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G_IO_STATUS_NORMAL, |
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G_IO_STATUS_EOF, |
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G_IO_STATUS_AGAIN |
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} GIOStatus; |
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typedef enum |
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{ |
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G_SEEK_CUR, |
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G_SEEK_SET, |
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G_SEEK_END |
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} GSeekType; |
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typedef enum |
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{ |
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G_IO_IN GLIB_SYSDEF_POLLIN, |
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G_IO_OUT GLIB_SYSDEF_POLLOUT, |
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G_IO_PRI GLIB_SYSDEF_POLLPRI, |
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G_IO_ERR GLIB_SYSDEF_POLLERR, |
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G_IO_HUP GLIB_SYSDEF_POLLHUP, |
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G_IO_NVAL GLIB_SYSDEF_POLLNVAL |
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} GIOCondition; |
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typedef enum |
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{ |
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G_IO_FLAG_APPEND = 1 << 0, |
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G_IO_FLAG_NONBLOCK = 1 << 1, |
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G_IO_FLAG_IS_READABLE = 1 << 2, /* Read only flag */ |
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G_IO_FLAG_IS_WRITEABLE = 1 << 3, /* Read only flag */ |
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G_IO_FLAG_IS_SEEKABLE = 1 << 4, /* Read only flag */ |
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G_IO_FLAG_MASK = (1 << 5) - 1, |
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G_IO_FLAG_GET_MASK = G_IO_FLAG_MASK, |
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G_IO_FLAG_SET_MASK = G_IO_FLAG_APPEND | G_IO_FLAG_NONBLOCK |
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} GIOFlags; |
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108 |
|
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struct _GIOChannel |
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110 |
{ |
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/*< private >*/ |
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gint ref_count; |
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GIOFuncs *funcs; |
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114 |
|
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gchar *encoding; |
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GIConv read_cd; |
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GIConv write_cd; |
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gchar *line_term; /* String which indicates the end of a line of text */ |
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guint line_term_len; /* So we can have null in the line term */ |
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120 |
|
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gsize buf_size; |
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GString *read_buf; /* Raw data from the channel */ |
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GString *encoded_read_buf; /* Channel data converted to UTF-8 */ |
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GString *write_buf; /* Data ready to be written to the file */ |
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gchar partial_write_buf[6]; /* UTF-8 partial characters, null terminated */ |
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126 |
|
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/* Group the flags together, immediately after partial_write_buf, to save memory */ |
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128 |
|
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guint use_buffer : 1; /* The encoding uses the buffers */ |
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guint do_encode : 1; /* The encoding uses the GIConv coverters */ |
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guint close_on_unref : 1; /* Close the channel on final unref */ |
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guint is_readable : 1; /* Cached GIOFlag */ |
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guint is_writeable : 1; /* ditto */ |
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guint is_seekable : 1; /* ditto */ |
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135 |
|
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gpointer reserved1; |
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gpointer reserved2; |
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}; |
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139 |
|
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typedef gboolean (*GIOFunc) (GIOChannel *source, |
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GIOCondition condition, |
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gpointer data); |
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struct _GIOFuncs |
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144 |
{ |
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GIOStatus (*io_read) (GIOChannel *channel, |
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gchar *buf, |
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gsize count, |
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gsize *bytes_read, |
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GError **err); |
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GIOStatus (*io_write) (GIOChannel *channel, |
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const gchar *buf, |
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gsize count, |
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gsize *bytes_written, |
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GError **err); |
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GIOStatus (*io_seek) (GIOChannel *channel, |
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gint64 offset, |
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GSeekType type, |
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GError **err); |
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GIOStatus (*io_close) (GIOChannel *channel, |
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GError **err); |
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GSource* (*io_create_watch) (GIOChannel *channel, |
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GIOCondition condition); |
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void (*io_free) (GIOChannel *channel); |
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GIOStatus (*io_set_flags) (GIOChannel *channel, |
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GIOFlags flags, |
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GError **err); |
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GIOFlags (*io_get_flags) (GIOChannel *channel); |
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168 |
}; |
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169 |
|
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IMPORT_C void g_io_channel_init (GIOChannel *channel); |
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IMPORT_C GIOChannel *g_io_channel_ref (GIOChannel *channel); |
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IMPORT_C void g_io_channel_unref (GIOChannel *channel); |
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173 |
|
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#ifndef G_DISABLE_DEPRECATED |
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IMPORT_C GIOError g_io_channel_read (GIOChannel *channel, |
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gchar *buf, |
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gsize count, |
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gsize *bytes_read); |
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IMPORT_C GIOError g_io_channel_write (GIOChannel *channel, |
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const gchar *buf, |
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gsize count, |
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gsize *bytes_written); |
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183 |
IMPORT_C GIOError g_io_channel_seek (GIOChannel *channel, |
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gint64 offset, |
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GSeekType type); |
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IMPORT_C void g_io_channel_close (GIOChannel *channel); |
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#endif /* G_DISABLE_DEPRECATED */ |
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188 |
|
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IMPORT_C GIOStatus g_io_channel_shutdown (GIOChannel *channel, |
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gboolean flush, |
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GError **err); |
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IMPORT_C guint g_io_add_watch_full (GIOChannel *channel, |
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gint priority, |
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GIOCondition condition, |
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GIOFunc func, |
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gpointer user_data, |
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GDestroyNotify notify); |
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IMPORT_C GSource * g_io_create_watch (GIOChannel *channel, |
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199 |
GIOCondition condition); |
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200 |
IMPORT_C guint g_io_add_watch (GIOChannel *channel, |
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201 |
GIOCondition condition, |
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GIOFunc func, |
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gpointer user_data); |
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/* character encoding conversion involved functions. |
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*/ |
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IMPORT_C void g_io_channel_set_buffer_size (GIOChannel *channel, |
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gsize size); |
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IMPORT_C gsize g_io_channel_get_buffer_size (GIOChannel *channel); |
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IMPORT_C GIOCondition g_io_channel_get_buffer_condition (GIOChannel *channel); |
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IMPORT_C GIOStatus g_io_channel_set_flags (GIOChannel *channel, |
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GIOFlags flags, |
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GError **error); |
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IMPORT_C GIOFlags g_io_channel_get_flags (GIOChannel *channel); |
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IMPORT_C void g_io_channel_set_line_term (GIOChannel *channel, |
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const gchar *line_term, |
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gint length); |
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IMPORT_C G_CONST_RETURN gchar* g_io_channel_get_line_term (GIOChannel *channel, |
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gint *length); |
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IMPORT_C void g_io_channel_set_buffered (GIOChannel *channel, |
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gboolean buffered); |
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IMPORT_C gboolean g_io_channel_get_buffered (GIOChannel *channel); |
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IMPORT_C GIOStatus g_io_channel_set_encoding (GIOChannel *channel, |
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const gchar *encoding, |
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GError **error); |
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IMPORT_C G_CONST_RETURN gchar* g_io_channel_get_encoding (GIOChannel *channel); |
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IMPORT_C void g_io_channel_set_close_on_unref (GIOChannel *channel, |
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gboolean do_close); |
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IMPORT_C gboolean g_io_channel_get_close_on_unref (GIOChannel *channel); |
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|
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IMPORT_C GIOStatus g_io_channel_flush (GIOChannel *channel, |
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GError **error); |
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IMPORT_C GIOStatus g_io_channel_read_line (GIOChannel *channel, |
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gchar **str_return, |
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gsize *length, |
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gsize *terminator_pos, |
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GError **error); |
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IMPORT_C GIOStatus g_io_channel_read_line_string (GIOChannel *channel, |
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GString *buffer, |
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gsize *terminator_pos, |
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GError **error); |
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IMPORT_C GIOStatus g_io_channel_read_to_end (GIOChannel *channel, |
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gchar **str_return, |
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gsize *length, |
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GError **error); |
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IMPORT_C GIOStatus g_io_channel_read_chars (GIOChannel *channel, |
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gchar *buf, |
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gsize count, |
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gsize *bytes_read, |
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GError **error); |
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IMPORT_C GIOStatus g_io_channel_read_unichar (GIOChannel *channel, |
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gunichar *thechar, |
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GError **error); |
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IMPORT_C GIOStatus g_io_channel_write_chars (GIOChannel *channel, |
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const gchar *buf, |
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gssize count, |
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gsize *bytes_written, |
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GError **error); |
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IMPORT_C GIOStatus g_io_channel_write_unichar (GIOChannel *channel, |
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gunichar thechar, |
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GError **error); |
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IMPORT_C GIOStatus g_io_channel_seek_position (GIOChannel *channel, |
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gint64 offset, |
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GSeekType type, |
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GError **error); |
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#ifdef G_OS_WIN32 |
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#define g_io_channel_new_file g_io_channel_new_file_utf8 |
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#endif |
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|
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IMPORT_C GIOChannel* g_io_channel_new_file (const gchar *filename, |
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const gchar *mode, |
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GError **error); |
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|
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/* Error handling */ |
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|
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IMPORT_C GQuark g_io_channel_error_quark (void); |
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IMPORT_C GIOChannelError g_io_channel_error_from_errno (gint en); |
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|
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/* On Unix, IO channels created with this function for any file |
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* descriptor or socket. |
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* |
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* On Win32, this can be used either for files opened with the MSVCRT |
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* (the Microsoft run-time C library) _open() or _pipe, including file |
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* descriptors 0, 1 and 2 (corresponding to stdin, stdout and stderr), |
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* or for Winsock SOCKETs. If the parameter is a legal file |
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* descriptor, it is assumed to be such, otherwise it should be a |
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* SOCKET. This relies on SOCKETs and file descriptors not |
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* overlapping. If you want to be certain, call either |
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* g_io_channel_win32_new_fd() or g_io_channel_win32_new_socket() |
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* instead as appropriate. |
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* |
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* The term file descriptor as used in the context of Win32 refers to |
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* the emulated Unix-like file descriptors MSVCRT provides. The native |
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* corresponding concept is file HANDLE. There isn't as of yet a way to |
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* get GIOChannels for Win32 file HANDLEs. |
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*/ |
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IMPORT_C GIOChannel* g_io_channel_unix_new (int fd); |
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IMPORT_C gint g_io_channel_unix_get_fd (GIOChannel *channel); |
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|
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|
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/* Hook for GClosure / GSource integration. Don't touch */ |
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GLIB_VAR GSourceFuncs g_io_watch_funcs; |
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#ifdef __SYMBIAN32__ |
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IMPORT_C GSourceFuncs * _g_io_watch_funcs(); |
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#endif /* __SYMBIAN32__ */ |
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#ifdef G_OS_WIN32 |
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/* You can use this "pseudo file descriptor" in a GPollFD to add |
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* polling for Windows messages. GTK applications should not do that. |
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*/ |
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#define G_WIN32_MSG_HANDLE 19981206 |
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|
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/* Use this to get a GPollFD from a GIOChannel, so that you can call |
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* g_io_channel_win32_poll(). After calling this you should only use |
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* g_io_channel_read() to read from the GIOChannel, i.e. never read() |
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* from the underlying file descriptor. For SOCKETs, it is possible to call |
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* recv(). |
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*/ |
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void g_io_channel_win32_make_pollfd (GIOChannel *channel, |
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GIOCondition condition, |
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GPollFD *fd); |
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|
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/* This can be used to wait a until at least one of the channels is readable. |
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* On Unix you would do a select() on the file descriptors of the channels. |
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*/ |
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gint g_io_channel_win32_poll (GPollFD *fds, |
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gint n_fds, |
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gint timeout_); |
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|
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/* Create an IO channel for Windows messages for window handle hwnd. */ |
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#if GLIB_SIZEOF_VOID_P == 8 |
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/* We use gsize here so that it is still an integer type and not a |
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* pointer, like the guint in the traditional prototype. We can't use |
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* intptr_t as that is not portable enough. |
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*/ |
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GIOChannel *g_io_channel_win32_new_messages (gsize hwnd); |
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#else |
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GIOChannel *g_io_channel_win32_new_messages (guint hwnd); |
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#endif |
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|
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/* Create an IO channel for C runtime (emulated Unix-like) file |
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* descriptors. After calling g_io_add_watch() on a IO channel |
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* returned by this function, you shouldn't call read() on the file |
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* descriptor. This is because adding polling for a file descriptor is |
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* implemented on Win32 by starting a thread that sits blocked in a |
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* read() from the file descriptor most of the time. All reads from |
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* the file descriptor should be done by this internal GLib |
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* thread. Your code should call only g_io_channel_read_chars(). |
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*/ |
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GIOChannel* g_io_channel_win32_new_fd (gint fd); |
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|
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/* Get the C runtime file descriptor of a channel. */ |
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gint g_io_channel_win32_get_fd (GIOChannel *channel); |
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|
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/* Create an IO channel for a winsock socket. The parameter should be |
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* a SOCKET. Contrary to IO channels for file descriptors (on *Win32), |
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* you can use normal recv() or recvfrom() on sockets even if GLib |
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* is polling them. |
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*/ |
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GIOChannel *g_io_channel_win32_new_socket (gint socket); |
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|
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#endif |
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G_END_DECLS |
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|
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#endif /* __G_IOCHANNEL_H__ */ |