* 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.
+ * License along with this library; if not, see <http://www.gnu.org/licenses/>.
*/
/*
*/
#include "config.h"
-#include "giochannel.h"
#include <string.h>
#include <errno.h>
-#ifdef HAVE_UNISTD_H
-#include <unistd.h>
-#endif
+#include "giochannel.h"
-#undef G_DISABLE_DEPRECATED
+#include "gstrfuncs.h"
+#include "gtestutils.h"
+#include "glibintl.h"
-#include "glib.h"
-#include "glibintl.h"
+/**
+ * SECTION:iochannels
+ * @title: IO Channels
+ * @short_description: portable support for using files, pipes and sockets
+ * @see_also: g_io_add_watch(), g_io_add_watch_full(), g_source_remove(),
+ * #GMainLoop
+ *
+ * The #GIOChannel data type aims to provide a portable method for
+ * using file descriptors, pipes, and sockets, and integrating them
+ * into the [main event loop][glib-The-Main-Event-Loop]. Currently,
+ * full support is available on UNIX platforms, support for Windows
+ * is only partially complete.
+ *
+ * To create a new #GIOChannel on UNIX systems use
+ * g_io_channel_unix_new(). This works for plain file descriptors,
+ * pipes and sockets. Alternatively, a channel can be created for a
+ * file in a system independent manner using g_io_channel_new_file().
+ *
+ * Once a #GIOChannel has been created, it can be used in a generic
+ * manner with the functions g_io_channel_read_chars(),
+ * g_io_channel_write_chars(), g_io_channel_seek_position(), and
+ * g_io_channel_shutdown().
+ *
+ * To add a #GIOChannel to the [main event loop][glib-The-Main-Event-Loop],
+ * use g_io_add_watch() or g_io_add_watch_full(). Here you specify which
+ * events you are interested in on the #GIOChannel, and provide a
+ * function to be called whenever these events occur.
+ *
+ * #GIOChannel instances are created with an initial reference count of 1.
+ * g_io_channel_ref() and g_io_channel_unref() can be used to
+ * increment or decrement the reference count respectively. When the
+ * reference count falls to 0, the #GIOChannel is freed. (Though it
+ * isn't closed automatically, unless it was created using
+ * g_io_channel_new_file().) Using g_io_add_watch() or
+ * g_io_add_watch_full() increments a channel's reference count.
+ *
+ * The new functions g_io_channel_read_chars(),
+ * g_io_channel_read_line(), g_io_channel_read_line_string(),
+ * g_io_channel_read_to_end(), g_io_channel_write_chars(),
+ * g_io_channel_seek_position(), and g_io_channel_flush() should not be
+ * mixed with the deprecated functions g_io_channel_read(),
+ * g_io_channel_write(), and g_io_channel_seek() on the same channel.
+ **/
+
+/**
+ * GIOChannel:
+ *
+ * A data structure representing an IO Channel. The fields should be
+ * considered private and should only be accessed with the following
+ * functions.
+ **/
+
+/**
+ * GIOFuncs:
+ * @io_read: reads raw bytes from the channel. This is called from
+ * various functions such as g_io_channel_read_chars() to
+ * read raw bytes from the channel. Encoding and buffering
+ * issues are dealt with at a higher level.
+ * @io_write: writes raw bytes to the channel. This is called from
+ * various functions such as g_io_channel_write_chars() to
+ * write raw bytes to the channel. Encoding and buffering
+ * issues are dealt with at a higher level.
+ * @io_seek: (optional) seeks the channel. This is called from
+ * g_io_channel_seek() on channels that support it.
+ * @io_close: closes the channel. This is called from
+ * g_io_channel_close() after flushing the buffers.
+ * @io_create_watch: creates a watch on the channel. This call
+ * corresponds directly to g_io_create_watch().
+ * @io_free: called from g_io_channel_unref() when the channel needs to
+ * be freed. This function must free the memory associated
+ * with the channel, including freeing the #GIOChannel
+ * structure itself. The channel buffers have been flushed
+ * and possibly @io_close has been called by the time this
+ * function is called.
+ * @io_set_flags: sets the #GIOFlags on the channel. This is called
+ * from g_io_channel_set_flags() with all flags except
+ * for %G_IO_FLAG_APPEND and %G_IO_FLAG_NONBLOCK masked
+ * out.
+ * @io_get_flags: gets the #GIOFlags for the channel. This function
+ * need only return the %G_IO_FLAG_APPEND and
+ * %G_IO_FLAG_NONBLOCK flags; g_io_channel_get_flags()
+ * automatically adds the others as appropriate.
+ *
+ * A table of functions used to handle different types of #GIOChannel
+ * in a generic way.
+ **/
+
+/**
+ * GIOStatus:
+ * @G_IO_STATUS_ERROR: An error occurred.
+ * @G_IO_STATUS_NORMAL: Success.
+ * @G_IO_STATUS_EOF: End of file.
+ * @G_IO_STATUS_AGAIN: Resource temporarily unavailable.
+ *
+ * Stati returned by most of the #GIOFuncs functions.
+ **/
+
+/**
+ * GIOError:
+ * @G_IO_ERROR_NONE: no error
+ * @G_IO_ERROR_AGAIN: an EAGAIN error occurred
+ * @G_IO_ERROR_INVAL: an EINVAL error occurred
+ * @G_IO_ERROR_UNKNOWN: another error occurred
+ *
+ * #GIOError is only used by the deprecated functions
+ * g_io_channel_read(), g_io_channel_write(), and g_io_channel_seek().
+ **/
#define G_IO_NICE_BUF_SIZE 1024
gsize *terminator_pos,
GError **error);
+/**
+ * g_io_channel_init:
+ * @channel: a #GIOChannel
+ *
+ * Initializes a #GIOChannel struct.
+ *
+ * This is called by each of the above functions when creating a
+ * #GIOChannel, and so is not often needed by the application
+ * programmer (unless you are creating a new type of #GIOChannel).
+ */
void
g_io_channel_init (GIOChannel *channel)
{
channel->close_on_unref = FALSE;
}
-void
+/**
+ * g_io_channel_ref:
+ * @channel: a #GIOChannel
+ *
+ * Increments the reference count of a #GIOChannel.
+ *
+ * Returns: the @channel that was passed in (since 2.6)
+ */
+GIOChannel *
g_io_channel_ref (GIOChannel *channel)
{
- g_return_if_fail (channel != NULL);
+ g_return_val_if_fail (channel != NULL, NULL);
- channel->ref_count++;
+ g_atomic_int_inc (&channel->ref_count);
+
+ return channel;
}
+/**
+ * g_io_channel_unref:
+ * @channel: a #GIOChannel
+ *
+ * Decrements the reference count of a #GIOChannel.
+ */
void
g_io_channel_unref (GIOChannel *channel)
{
+ gboolean is_zero;
+
g_return_if_fail (channel != NULL);
- channel->ref_count--;
- if (channel->ref_count == 0)
+ is_zero = g_atomic_int_dec_and_test (&channel->ref_count);
+
+ if (G_UNLIKELY (is_zero))
{
if (channel->close_on_unref)
g_io_channel_shutdown (channel, TRUE, NULL);
g_iconv_close (channel->read_cd);
if (channel->write_cd != (GIConv) -1)
g_iconv_close (channel->write_cd);
- if (channel->line_term)
- g_free (channel->line_term);
+ g_free (channel->line_term);
if (channel->read_buf)
g_string_free (channel->read_buf, TRUE);
if (channel->write_buf)
}
static GIOError
-g_io_error_get_from_g_error (GIOStatus status,
- GError *err)
+g_io_error_get_from_g_error (GIOStatus status,
+ GError *err)
{
switch (status)
{
case G_IO_STATUS_AGAIN:
return G_IO_ERROR_AGAIN;
case G_IO_STATUS_ERROR:
+ g_return_val_if_fail (err != NULL, G_IO_ERROR_UNKNOWN);
+
if (err->domain != G_IO_CHANNEL_ERROR)
return G_IO_ERROR_UNKNOWN;
switch (err->code)
}
default:
g_assert_not_reached ();
- return G_IO_ERROR_UNKNOWN; /* Keep the compiler happy */
}
}
/**
* g_io_channel_read:
- * @channel: a #GIOChannel.
- * @buf: a buffer to read the data into (which should be at least count bytes long).
- * @count: the number of bytes to read from the #GIOChannel.
- * @bytes_read: returns the number of bytes actually read.
+ * @channel: a #GIOChannel
+ * @buf: a buffer to read the data into (which should be at least
+ * count bytes long)
+ * @count: the number of bytes to read from the #GIOChannel
+ * @bytes_read: returns the number of bytes actually read
*
- * Reads data from a #GIOChannel. This function is deprecated. New code should
- * use g_io_channel_read_chars() instead.
+ * Reads data from a #GIOChannel.
*
- * Return value: %G_IO_ERROR_NONE if the operation was successful.
+ * Returns: %G_IO_ERROR_NONE if the operation was successful.
+ *
+ * Deprecated:2.2: Use g_io_channel_read_chars() instead.
**/
GIOError
g_io_channel_read (GIOChannel *channel,
g_return_val_if_fail (channel != NULL, G_IO_ERROR_UNKNOWN);
g_return_val_if_fail (bytes_read != NULL, G_IO_ERROR_UNKNOWN);
+ if (count == 0)
+ {
+ if (bytes_read)
+ *bytes_read = 0;
+ return G_IO_ERROR_NONE;
+ }
+
+ g_return_val_if_fail (buf != NULL, G_IO_ERROR_UNKNOWN);
+
status = channel->funcs->io_read (channel, buf, count, bytes_read, &err);
error = g_io_error_get_from_g_error (status, err);
/**
* g_io_channel_write:
- * @channel: a #GIOChannel.
- * @buf: the buffer containing the data to write.
- * @count: the number of bytes to write.
- * @bytes_written: the number of bytes actually written.
+ * @channel: a #GIOChannel
+ * @buf: the buffer containing the data to write
+ * @count: the number of bytes to write
+ * @bytes_written: the number of bytes actually written
*
- * Writes data to a #GIOChannel. This function is deprecated. New code should
- * use g_io_channel_write_chars() instead.
+ * Writes data to a #GIOChannel.
*
- * Return value: %G_IO_ERROR_NONE if the operation was successful.
+ * Returns: %G_IO_ERROR_NONE if the operation was successful.
+ *
+ * Deprecated:2.2: Use g_io_channel_write_chars() instead.
**/
GIOError
g_io_channel_write (GIOChannel *channel,
/**
* g_io_channel_seek:
- * @channel: a #GIOChannel.
- * @offset: an offset, in bytes, which is added to the position specified by @type
+ * @channel: a #GIOChannel
+ * @offset: an offset, in bytes, which is added to the position specified
+ * by @type
* @type: the position in the file, which can be %G_SEEK_CUR (the current
- * position), %G_SEEK_SET (the start of the file), or %G_SEEK_END (the end of the
- * file).
+ * position), %G_SEEK_SET (the start of the file), or %G_SEEK_END
+ * (the end of the file)
*
- * Sets the current position in the #GIOChannel, similar to the standard library
- * function <function>fseek()</function>. This function is deprecated. New
- * code should use g_io_channel_seek_position() instead.
+ * Sets the current position in the #GIOChannel, similar to the standard
+ * library function fseek().
*
- * Return value: %G_IO_ERROR_NONE if the operation was successful.
+ * Returns: %G_IO_ERROR_NONE if the operation was successful.
+ *
+ * Deprecated:2.2: Use g_io_channel_seek_position() instead.
**/
GIOError
-g_io_channel_seek (GIOChannel *channel,
- gint64 offset,
- GSeekType type)
+g_io_channel_seek (GIOChannel *channel,
+ gint64 offset,
+ GSeekType type)
{
GError *err = NULL;
GIOError error;
/**
* g_io_channel_new_file:
- * @filename: A string containing the name of a file.
+ * @filename: A string containing the name of a file
* @mode: One of "r", "w", "a", "r+", "w+", "a+". These have
- * the same meaning as in <function>fopen()</function>.
- * @error: A location to return an error of type %G_FILE_ERROR.
+ * the same meaning as in fopen()
+ * @error: A location to return an error of type %G_FILE_ERROR
*
* Open a file @filename as a #GIOChannel using mode @mode. This
* channel will be closed when the last reference to it is dropped,
* so will not cause problems, as long as no attempt is made to
* access the channel after it is closed).
*
- * Return value: A #GIOChannel on success, %NULL on failure.
+ * Returns: A #GIOChannel on success, %NULL on failure.
**/
/**
*
* Close an IO channel. Any pending data to be written will be
* flushed, ignoring errors. The channel will not be freed until the
- * last reference is dropped using g_io_channel_unref(). This
- * function is deprecated: you should use g_io_channel_shutdown()
- * instead.
+ * last reference is dropped using g_io_channel_unref().
+ *
+ * Deprecated:2.2: Use g_io_channel_shutdown() instead.
**/
void
g_io_channel_close (GIOChannel *channel)
* flushed if @flush is %TRUE. The channel will not be freed until the
* last reference is dropped using g_io_channel_unref().
*
- * Return value: the status of the operation.
+ * Returns: the status of the operation.
**/
GIOStatus
-g_io_channel_shutdown (GIOChannel *channel,
- gboolean flush,
- GError **err)
+g_io_channel_shutdown (GIOChannel *channel,
+ gboolean flush,
+ GError **err)
{
GIOStatus status, result;
GError *tmperr = NULL;
g_return_val_if_fail (channel != NULL, G_IO_STATUS_ERROR);
g_return_val_if_fail (err == NULL || *err == NULL, G_IO_STATUS_ERROR);
- if (flush && channel->write_buf && channel->write_buf->len > 0)
+ if (channel->write_buf && channel->write_buf->len > 0)
{
- GIOFlags flags;
+ if (flush)
+ {
+ GIOFlags flags;
- /* Set the channel to blocking, to avoid a busy loop
- */
- flags = g_io_channel_get_flags (channel);
- /* Ignore any errors here, they're irrelevant */
- g_io_channel_set_flags (channel, flags & ~G_IO_FLAG_NONBLOCK, NULL);
-
- result = g_io_channel_flush (channel, &tmperr);
+ /* Set the channel to blocking, to avoid a busy loop
+ */
+ flags = g_io_channel_get_flags (channel);
+ /* Ignore any errors here, they're irrelevant */
+ g_io_channel_set_flags (channel, flags & ~G_IO_FLAG_NONBLOCK, NULL);
- if (channel->partial_write_buf[0] != '\0')
- {
- g_warning ("Partial character at end of write buffer not flushed.\n");
- channel->partial_write_buf[0] = '\0';
+ result = g_io_channel_flush (channel, &tmperr);
}
+ else
+ result = G_IO_STATUS_NORMAL;
+
+ g_string_truncate(channel->write_buf, 0);
}
else
result = G_IO_STATUS_NORMAL;
+ if (channel->partial_write_buf[0] != '\0')
+ {
+ if (flush)
+ g_warning ("Partial character at end of write buffer not flushed.\n");
+ channel->partial_write_buf[0] = '\0';
+ }
+
status = channel->funcs->io_close (channel, err);
channel->close_on_unref = FALSE; /* Because we already did */
g_io_channel_purge (GIOChannel *channel)
{
GError *err = NULL;
- GIOStatus status;
+ GIOStatus status G_GNUC_UNUSED;
g_return_if_fail (channel != NULL);
if (channel->write_buf && channel->write_buf->len > 0)
{
GIOFlags flags;
-
+
/* Set the channel to blocking, to avoid a busy loop
*/
flags = g_io_channel_get_flags (channel);
status = g_io_channel_flush (channel, &err);
if (err)
- { /* No way to return the error */
- g_warning ("Error flushing string: %s", err->message);
- g_error_free (err);
- }
+ { /* No way to return the error */
+ g_warning ("Error flushing string: %s", err->message);
+ g_error_free (err);
+ }
}
/* Flush these in case anyone tries to close without unrefing */
}
}
+/**
+ * g_io_create_watch:
+ * @channel: a #GIOChannel to watch
+ * @condition: conditions to watch for
+ *
+ * Creates a #GSource that's dispatched when @condition is met for the
+ * given @channel. For example, if condition is #G_IO_IN, the source will
+ * be dispatched when there's data available for reading.
+ *
+ * g_io_add_watch() is a simpler interface to this same functionality, for
+ * the case where you want to add the source to the default main loop context
+ * at the default priority.
+ *
+ * On Windows, polling a #GSource created to watch a channel for a socket
+ * puts the socket in non-blocking mode. This is a side-effect of the
+ * implementation and unavoidable.
+ *
+ * Returns: a new #GSource
+ */
GSource *
-g_io_create_watch (GIOChannel *channel,
- GIOCondition condition)
+g_io_create_watch (GIOChannel *channel,
+ GIOCondition condition)
{
g_return_val_if_fail (channel != NULL, NULL);
return channel->funcs->io_create_watch (channel, condition);
}
+/**
+ * g_io_add_watch_full:
+ * @channel: a #GIOChannel
+ * @priority: the priority of the #GIOChannel source
+ * @condition: the condition to watch for
+ * @func: the function to call when the condition is satisfied
+ * @user_data: user data to pass to @func
+ * @notify: the function to call when the source is removed
+ *
+ * Adds the #GIOChannel into the default main loop context
+ * with the given priority.
+ *
+ * This internally creates a main loop source using g_io_create_watch()
+ * and attaches it to the main loop context with g_source_attach().
+ * You can do these steps manually if you need greater control.
+ *
+ * Returns: the event source id
+ * Rename to: g_io_add_watch
+ */
guint
g_io_add_watch_full (GIOChannel *channel,
gint priority,
return id;
}
+/**
+ * g_io_add_watch:
+ * @channel: a #GIOChannel
+ * @condition: the condition to watch for
+ * @func: the function to call when the condition is satisfied
+ * @user_data: user data to pass to @func
+ *
+ * Adds the #GIOChannel into the default main loop context
+ * with the default priority.
+ *
+ * Returns: the event source id
+ */
+/**
+ * GIOFunc:
+ * @source: the #GIOChannel event source
+ * @condition: the condition which has been satisfied
+ * @data: user data set in g_io_add_watch() or g_io_add_watch_full()
+ *
+ * Specifies the type of function passed to g_io_add_watch() or
+ * g_io_add_watch_full(), which is called when the requested condition
+ * on a #GIOChannel is satisfied.
+ *
+ * Returns: the function should return %FALSE if the event source
+ * should be removed
+ **/
+/**
+ * GIOCondition:
+ * @G_IO_IN: There is data to read.
+ * @G_IO_OUT: Data can be written (without blocking).
+ * @G_IO_PRI: There is urgent data to read.
+ * @G_IO_ERR: Error condition.
+ * @G_IO_HUP: Hung up (the connection has been broken, usually for
+ * pipes and sockets).
+ * @G_IO_NVAL: Invalid request. The file descriptor is not open.
+ *
+ * A bitwise combination representing a condition to watch for on an
+ * event source.
+ **/
guint
-g_io_add_watch (GIOChannel *channel,
- GIOCondition condition,
- GIOFunc func,
- gpointer user_data)
+g_io_add_watch (GIOChannel *channel,
+ GIOCondition condition,
+ GIOFunc func,
+ gpointer user_data)
{
return g_io_add_watch_full (channel, G_PRIORITY_DEFAULT, condition, func, user_data, NULL);
}
* @channel: A #GIOChannel
*
* This function returns a #GIOCondition depending on whether there
- * is data to be read/space to write data in the
- * internal buffers in the #GIOChannel. Only the flags %G_IO_IN and
- * %G_IO_OUT may be set.
+ * is data to be read/space to write data in the internal buffers in
+ * the #GIOChannel. Only the flags %G_IO_IN and %G_IO_OUT may be set.
*
- * Return value: A #GIOCondition
+ * Returns: A #GIOCondition
**/
GIOCondition
g_io_channel_get_buffer_condition (GIOChannel *channel)
/**
* g_io_channel_error_from_errno:
- * @en: an <literal>errno</literal> error number, e.g. %EINVAL.
+ * @en: an `errno` error number, e.g. `EINVAL`
*
- * Converts an <literal>errno</literal> error number to a #GIOChannelError.
+ * Converts an `errno` error number to a #GIOChannelError.
*
- * Return value: a #GIOChannelError error number, e.g. %G_IO_CHANNEL_ERROR_INVAL.
+ * Returns: a #GIOChannelError error number, e.g.
+ * %G_IO_CHANNEL_ERROR_INVAL.
**/
GIOChannelError
g_io_channel_error_from_errno (gint en)
#ifdef EAGAIN
g_return_val_if_fail (en != EAGAIN, G_IO_CHANNEL_ERROR_FAILED);
#endif
-#ifdef EINTR
- g_return_val_if_fail (en != EINTR, G_IO_CHANNEL_ERROR_FAILED);
-#endif
switch (en)
{
#ifdef EFAULT
case EFAULT:
- g_warning("File descriptor outside valid address space.\n");
+ g_warning("Buffer outside valid address space.\n");
return G_IO_CHANNEL_ERROR_FAILED;
#endif
return G_IO_CHANNEL_ERROR_FBIG;
#endif
+#ifdef EINTR
+ /* In general, we should catch EINTR before we get here,
+ * but close() is allowed to return EINTR by POSIX, so
+ * we need to catch it here; EINTR from close() is
+ * unrecoverable, because it's undefined whether
+ * the fd was actually closed or not, so we just return
+ * a generic error code.
+ */
+ case EINTR:
+ return G_IO_CHANNEL_ERROR_FAILED;
+#endif
+
#ifdef EINVAL
case EINVAL:
return G_IO_CHANNEL_ERROR_INVAL;
#endif
#ifdef EOVERFLOW
+#if EOVERFLOW != EFBIG
case EOVERFLOW:
return G_IO_CHANNEL_ERROR_OVERFLOW;
#endif
+#endif
#ifdef EPIPE
case EPIPE:
/**
* g_io_channel_set_buffer_size:
* @channel: a #GIOChannel
- * @size: the size of the buffer. 0 == pick a good size
+ * @size: the size of the buffer, or 0 to let GLib pick a good size
*
* Sets the buffer size.
**/
void
-g_io_channel_set_buffer_size (GIOChannel *channel,
- gsize size)
+g_io_channel_set_buffer_size (GIOChannel *channel,
+ gsize size)
{
g_return_if_fail (channel != NULL);
*
* Gets the buffer size.
*
- * Return value: the size of the buffer.
+ * Returns: the size of the buffer.
**/
gsize
-g_io_channel_get_buffer_size (GIOChannel *channel)
+g_io_channel_get_buffer_size (GIOChannel *channel)
{
g_return_val_if_fail (channel != NULL, 0);
/**
* g_io_channel_set_line_term:
* @channel: a #GIOChannel
- * @line_term: The line termination string. Use %NULL for auto detect.
- * Auto detection breaks on "\n", "\r\n", "\r", "\0", and
- * the Unicode paragraph separator. Auto detection should
- * not be used for anything other than file-based channels.
+ * @line_term: (allow-none): The line termination string. Use %NULL for
+ * autodetect. Autodetection breaks on "\n", "\r\n", "\r", "\0",
+ * and the Unicode paragraph separator. Autodetection should not be
+ * used for anything other than file-based channels.
* @length: The length of the termination string. If -1 is passed, the
* string is assumed to be nul-terminated. This option allows
- * termination strings with embeded nuls.
+ * termination strings with embedded nuls.
*
* This sets the string that #GIOChannel uses to determine
* where in the file a line break occurs.
else if (length < 0)
length = strlen (line_term);
- if (channel->line_term)
- g_free (channel->line_term);
+ g_free (channel->line_term);
channel->line_term = line_term ? g_memdup (line_term, length) : NULL;
channel->line_term_len = length;
}
*
* This returns the string that #GIOChannel uses to determine
* where in the file a line break occurs. A value of %NULL
- * indicates auto detection.
+ * indicates autodetection.
*
- * Return value: The line termination string. This value
+ * Returns: The line termination string. This value
* is owned by GLib and must not be freed.
**/
-G_CONST_RETURN gchar*
-g_io_channel_get_line_term (GIOChannel *channel,
- gint *length)
+const gchar *
+g_io_channel_get_line_term (GIOChannel *channel,
+ gint *length)
{
- g_return_val_if_fail (channel != NULL, 0);
+ g_return_val_if_fail (channel != NULL, NULL);
if (length)
*length = channel->line_term_len;
/**
* g_io_channel_set_flags:
- * @channel: a #GIOChannel.
- * @flags: the flags to set on the IO channel.
- * @error: A location to return an error of type #GIOChannelError.
+ * @channel: a #GIOChannel
+ * @flags: the flags to set on the IO channel
+ * @error: A location to return an error of type #GIOChannelError
*
- * Sets the (writeable) flags in @channel to (@flags & %G_IO_CHANNEL_SET_MASK).
+ * Sets the (writeable) flags in @channel to (@flags & %G_IO_FLAG_SET_MASK).
*
- * Return value: the status of the operation.
+ * Returns: the status of the operation.
**/
+/**
+ * GIOFlags:
+ * @G_IO_FLAG_APPEND: turns on append mode, corresponds to %O_APPEND
+ * (see the documentation of the UNIX open() syscall)
+ * @G_IO_FLAG_NONBLOCK: turns on nonblocking mode, corresponds to
+ * %O_NONBLOCK/%O_NDELAY (see the documentation of the UNIX open()
+ * syscall)
+ * @G_IO_FLAG_IS_READABLE: indicates that the io channel is readable.
+ * This flag cannot be changed.
+ * @G_IO_FLAG_IS_WRITABLE: indicates that the io channel is writable.
+ * This flag cannot be changed.
+ * @G_IO_FLAG_IS_WRITEABLE: a misspelled version of @G_IO_FLAG_IS_WRITABLE
+ * that existed before the spelling was fixed in GLib 2.30. It is kept
+ * here for compatibility reasons. Deprecated since 2.30
+ * @G_IO_FLAG_IS_SEEKABLE: indicates that the io channel is seekable,
+ * i.e. that g_io_channel_seek_position() can be used on it.
+ * This flag cannot be changed.
+ * @G_IO_FLAG_MASK: the mask that specifies all the valid flags.
+ * @G_IO_FLAG_GET_MASK: the mask of the flags that are returned from
+ * g_io_channel_get_flags()
+ * @G_IO_FLAG_SET_MASK: the mask of the flags that the user can modify
+ * with g_io_channel_set_flags()
+ *
+ * Specifies properties of a #GIOChannel. Some of the flags can only be
+ * read with g_io_channel_get_flags(), but not changed with
+ * g_io_channel_set_flags().
+ */
GIOStatus
-g_io_channel_set_flags (GIOChannel *channel,
- GIOFlags flags,
- GError **error)
+g_io_channel_set_flags (GIOChannel *channel,
+ GIOFlags flags,
+ GError **error)
{
g_return_val_if_fail (channel != NULL, G_IO_STATUS_ERROR);
g_return_val_if_fail ((error == NULL) || (*error == NULL),
G_IO_STATUS_ERROR);
- return (* channel->funcs->io_set_flags)(channel,
+ return (*channel->funcs->io_set_flags) (channel,
flags & G_IO_FLAG_SET_MASK,
error);
}
* Gets the current flags for a #GIOChannel, including read-only
* flags such as %G_IO_FLAG_IS_READABLE.
*
- * The values of the flags %G_IO_FLAG_IS_READABLE and %G_IO_FLAG_IS_WRITEABLE
+ * The values of the flags %G_IO_FLAG_IS_READABLE and %G_IO_FLAG_IS_WRITABLE
* are cached for internal use by the channel when it is created.
* If they should change at some later point (e.g. partial shutdown
- * of a socket with the UNIX <function>shutdown()</function> function), the user
- * should immediately call g_io_channel_get_flags () to update
+ * of a socket with the UNIX shutdown() function), the user
+ * should immediately call g_io_channel_get_flags() to update
* the internal values of these flags.
*
- * Return value: the flags which are set on the channel
+ * Returns: the flags which are set on the channel
**/
GIOFlags
g_io_channel_get_flags (GIOChannel *channel)
{
GIOFlags flags;
- g_return_val_if_fail (channel != NULL, G_IO_STATUS_ERROR);
+ g_return_val_if_fail (channel != NULL, 0);
flags = (* channel->funcs->io_get_flags) (channel);
if (channel->is_readable)
flags |= G_IO_FLAG_IS_READABLE;
if (channel->is_writeable)
- flags |= G_IO_FLAG_IS_WRITEABLE;
+ flags |= G_IO_FLAG_IS_WRITABLE;
return flags;
}
* destroyed. The default value of this is %TRUE for channels created
* by g_io_channel_new_file (), and %FALSE for all other channels.
*
- * Return value: Whether the channel will be closed on the final unref of
+ * Returns: Whether the channel will be closed on the final unref of
* the GIOChannel data structure.
**/
gboolean
*
* Replacement for g_io_channel_seek() with the new API.
*
- * Return value: the status of the operation.
+ * Returns: the status of the operation.
+ **/
+/**
+ * GSeekType:
+ * @G_SEEK_CUR: the current position in the file.
+ * @G_SEEK_SET: the start of the file.
+ * @G_SEEK_END: the end of the file.
+ *
+ * An enumeration specifying the base position for a
+ * g_io_channel_seek_position() operation.
**/
GIOStatus
-g_io_channel_seek_position (GIOChannel* channel,
- gint64 offset,
- GSeekType type,
- GError **error)
+g_io_channel_seek_position (GIOChannel *channel,
+ gint64 offset,
+ GSeekType type,
+ GError **error)
{
GIOStatus status;
*
* Flushes the write buffer for the GIOChannel.
*
- * Return value: the status of the operation: One of
- * #G_IO_CHANNEL_NORMAL, #G_IO_CHANNEL_AGAIN, or
- * #G_IO_CHANNEL_ERROR.
+ * Returns: the status of the operation: One of
+ * #G_IO_STATUS_NORMAL, #G_IO_STATUS_AGAIN, or
+ * #G_IO_STATUS_ERROR.
**/
GIOStatus
g_io_channel_flush (GIOChannel *channel,
* The default state of the channel is buffered.
**/
void
-g_io_channel_set_buffered (GIOChannel *channel,
- gboolean buffered)
+g_io_channel_set_buffered (GIOChannel *channel,
+ gboolean buffered)
{
g_return_if_fail (channel != NULL);
/**
* g_io_channel_get_buffered:
- * @channel: a #GIOChannel.
+ * @channel: a #GIOChannel
*
* Returns whether @channel is buffered.
*
* Return Value: %TRUE if the @channel is buffered.
**/
gboolean
-g_io_channel_get_buffered (GIOChannel *channel)
+g_io_channel_get_buffered (GIOChannel *channel)
{
g_return_val_if_fail (channel != NULL, FALSE);
/**
* g_io_channel_set_encoding:
* @channel: a #GIOChannel
- * @encoding: the encoding type
- * @error: location to store an error of type #GConvertError.
+ * @encoding: (allow-none): the encoding type
+ * @error: location to store an error of type #GConvertError
*
- * Sets the encoding for the input/output of the channel. The internal
- * encoding is always UTF-8. The default encoding for the
- * external file is UTF-8.
+ * Sets the encoding for the input/output of the channel.
+ * The internal encoding is always UTF-8. The default encoding
+ * for the external file is UTF-8.
*
* The encoding %NULL is safe to use with binary data.
*
- * The encoding can only be set under the following conditions:
- *
- * 1. The channel was just created, and has not been written to
- * or read from yet.
- *
- * 2. The channel is write-only.
- *
- * 3. The channel is a file, and the file pointer was just
- * repositioned by a call to g_io_channel_seek_position().
- * (This flushes all the internal buffers.)
- *
- * 4. The current encoding is %NULL or UTF-8.
+ * The encoding can only be set if one of the following conditions
+ * is true:
+ *
+ * - The channel was just created, and has not been written to or read from yet.
*
- * 5. One of the (new API) read functions has just returned %G_IO_STATUS_EOF
- * (or, in the case of g_io_channel_read_to_end (), %G_IO_STATUS_NORMAL).
+ * - The channel is write-only.
*
- * 6. One of the functions g_io_channel_read_chars () or g_io_channel_read_unichar ()
- * has returned %G_IO_STATUS_AGAIN or %G_IO_STATUS_ERROR. This may be
- * useful in the case of %G_CONVERT_ERROR_ILLEGAL_SEQUENCE.
- * Returning one of these statuses from g_io_channel_read_line (),
- * g_io_channel_read_line_string (), or g_io_channel_read_to_end ()
- * does <emphasis>not</emphasis> guarantee that the encoding can be changed.
+ * - The channel is a file, and the file pointer was just repositioned
+ * by a call to g_io_channel_seek_position(). (This flushes all the
+ * internal buffers.)
*
- * Channels which do not meet the above conditions cannot call
- * g_io_channel_seek_position () with an offset of %G_SEEK_CUR,
- * and if they are "seekable" cannot
- * call g_io_channel_write_chars () after calling one
- * of the API "read" functions.
+ * - The current encoding is %NULL or UTF-8.
*
- * Return Value: %G_IO_STATUS_NORMAL if the encoding was successfully set.
- **/
+ * - One of the (new API) read functions has just returned %G_IO_STATUS_EOF
+ * (or, in the case of g_io_channel_read_to_end(), %G_IO_STATUS_NORMAL).
+ *
+ * - One of the functions g_io_channel_read_chars() or
+ * g_io_channel_read_unichar() has returned %G_IO_STATUS_AGAIN or
+ * %G_IO_STATUS_ERROR. This may be useful in the case of
+ * %G_CONVERT_ERROR_ILLEGAL_SEQUENCE.
+ * Returning one of these statuses from g_io_channel_read_line(),
+ * g_io_channel_read_line_string(), or g_io_channel_read_to_end()
+ * does not guarantee that the encoding can be changed.
+ *
+ * Channels which do not meet one of the above conditions cannot call
+ * g_io_channel_seek_position() with an offset of %G_SEEK_CUR, and, if
+ * they are "seekable", cannot call g_io_channel_write_chars() after
+ * calling one of the API "read" functions.
+ *
+ * Return Value: %G_IO_STATUS_NORMAL if the encoding was successfully set
+ */
GIOStatus
g_io_channel_set_encoding (GIOChannel *channel,
const gchar *encoding,
if (read_cd == (GIConv) -1)
{
err = errno;
- from_enc = "UTF-8";
- to_enc = encoding;
+ from_enc = encoding;
+ to_enc = "UTF-8";
}
}
else
if (write_cd == (GIConv) -1)
{
err = errno;
- from_enc = encoding;
- to_enc = "UTF-8";
+ from_enc = "UTF-8";
+ to_enc = encoding;
}
}
else
if (err == EINVAL)
g_set_error (error, G_CONVERT_ERROR, G_CONVERT_ERROR_NO_CONVERSION,
- _("Conversion from character set `%s' to `%s' is not supported"),
+ _("Conversion from character set '%s' to '%s' is not supported"),
from_enc, to_enc);
else
g_set_error (error, G_CONVERT_ERROR, G_CONVERT_ERROR_FAILED,
- _("Could not open converter from `%s' to `%s': %s"),
+ _("Could not open converter from '%s' to '%s': %s"),
from_enc, to_enc, g_strerror (err));
if (read_cd != (GIConv) -1)
* g_io_channel_get_encoding:
* @channel: a #GIOChannel
*
- * Gets the encoding for the input/output of the channel. The internal
- * encoding is always UTF-8. The encoding %NULL makes the
- * channel safe for binary data.
+ * Gets the encoding for the input/output of the channel.
+ * The internal encoding is always UTF-8. The encoding %NULL
+ * makes the channel safe for binary data.
*
- * Return value: A string containing the encoding, this string is
+ * Returns: A string containing the encoding, this string is
* owned by GLib and must not be freed.
**/
-G_CONST_RETURN gchar*
-g_io_channel_get_encoding (GIOChannel *channel)
+const gchar *
+g_io_channel_get_encoding (GIOChannel *channel)
{
g_return_val_if_fail (channel != NULL, NULL);
}
static GIOStatus
-g_io_channel_fill_buffer (GIOChannel *channel,
- GError **err)
+g_io_channel_fill_buffer (GIOChannel *channel,
+ GError **err)
{
gsize read_size, cur_len, oldlen;
GIOStatus status;
g_string_truncate (channel->read_buf, read_size + cur_len);
- if ((status != G_IO_STATUS_NORMAL)
- && ((status != G_IO_STATUS_EOF) || (channel->read_buf->len == 0)))
+ if ((status != G_IO_STATUS_NORMAL) &&
+ ((status != G_IO_STATUS_EOF) || (channel->read_buf->len == 0)))
return status;
g_assert (channel->read_buf->len > 0);
if (channel->do_encode)
{
- size_t errnum, inbytes_left, outbytes_left;
+ gsize errnum, inbytes_left, outbytes_left;
gchar *inbuf, *outbuf;
int errval;
g_string_truncate (channel->encoded_read_buf,
channel->encoded_read_buf->len - outbytes_left);
- if (errnum == (size_t) -1)
+ if (errnum == (gsize) -1)
{
switch (errval)
{
status = G_IO_STATUS_NORMAL;
else
{
- g_set_error (err, G_CONVERT_ERROR,
+ g_set_error_literal (err, G_CONVERT_ERROR,
G_CONVERT_ERROR_ILLEGAL_SEQUENCE,
_("Invalid byte sequence in conversion input"));
return G_IO_STATUS_ERROR;
status = G_IO_STATUS_NORMAL;
else
{
- g_set_error (err, G_CONVERT_ERROR,
+ g_set_error_literal (err, G_CONVERT_ERROR,
G_CONVERT_ERROR_ILLEGAL_SEQUENCE,
_("Invalid byte sequence in conversion input"));
status = G_IO_STATUS_ERROR;
/**
* g_io_channel_read_line:
* @channel: a #GIOChannel
- * @str_return: The line read from the #GIOChannel, not including the
+ * @str_return: (out): The line read from the #GIOChannel, including the
* line terminator. This data should be freed with g_free()
* when no longer needed. This is a nul-terminated string.
* If a @length of zero is returned, this will be %NULL instead.
- * @length: location to store length of the read data, or %NULL
- * @terminator_pos: location to store position of line terminator, or %NULL
+ * @length: (allow-none) (out): location to store length of the read data, or %NULL
+ * @terminator_pos: (allow-none) (out): location to store position of line terminator, or %NULL
* @error: A location to return an error of type #GConvertError
* or #GIOChannelError
*
* Reads a line, including the terminating character(s),
* from a #GIOChannel into a newly-allocated string.
- * @length will contain allocated memory if the return
+ * @str_return will contain allocated memory if the return
* is %G_IO_STATUS_NORMAL.
*
- * Return value: a newly-allocated string. Free this string
- * with g_free() when you are done with it.
+ * Returns: the status of the operation.
**/
GIOStatus
-g_io_channel_read_line (GIOChannel *channel,
- gchar **str_return,
- gsize *length,
- gsize *terminator_pos,
- GError **error)
+g_io_channel_read_line (GIOChannel *channel,
+ gchar **str_return,
+ gsize *length,
+ gsize *terminator_pos,
+ GError **error)
{
GIOStatus status;
gsize got_length;
status = g_io_channel_read_line_backend (channel, &got_length, terminator_pos, error);
- if (length)
+ if (length && status != G_IO_STATUS_ERROR)
*length = got_length;
if (status == G_IO_STATUS_NORMAL)
* @buffer: a #GString into which the line will be written.
* If @buffer already contains data, the old data will
* be overwritten.
- * @terminator_pos: location to store position of line terminator, or %NULL
+ * @terminator_pos: (allow-none): location to store position of line terminator, or %NULL
* @error: a location to store an error of type #GConvertError
* or #GIOChannelError
*
* Reads a line from a #GIOChannel, using a #GString as a buffer.
*
- * Return value: the status of the operation.
+ * Returns: the status of the operation.
**/
GIOStatus
-g_io_channel_read_line_string (GIOChannel *channel,
- GString *buffer,
- gsize *terminator_pos,
- GError **error)
+g_io_channel_read_line_string (GIOChannel *channel,
+ GString *buffer,
+ gsize *terminator_pos,
+ GError **error)
{
gsize length;
GIOStatus status;
static GIOStatus
-g_io_channel_read_line_backend (GIOChannel *channel,
- gsize *length,
- gsize *terminator_pos,
- GError **error)
+g_io_channel_read_line_backend (GIOChannel *channel,
+ gsize *length,
+ gsize *terminator_pos,
+ GError **error)
{
GIOStatus status;
gsize checked_to, line_term_len, line_length, got_term_len;
if (!channel->use_buffer)
{
/* Can't do a raw read in read_line */
- g_set_error (error, G_CONVERT_ERROR, G_CONVERT_ERROR_FAILED,
- _("Can't do a raw read in g_io_channel_read_line_string"));
+ g_set_error_literal (error, G_CONVERT_ERROR, G_CONVERT_ERROR_FAILED,
+ _("Can't do a raw read in g_io_channel_read_line_string"));
return G_IO_STATUS_ERROR;
}
if (channel->encoding && channel->read_buf->len != 0)
{
- g_set_error (error, G_CONVERT_ERROR,
- G_CONVERT_ERROR_PARTIAL_INPUT,
- _("Leftover unconverted data in read buffer"));
+ g_set_error_literal (error, G_CONVERT_ERROR,
+ G_CONVERT_ERROR_PARTIAL_INPUT,
+ _("Leftover unconverted data in "
+ "read buffer"));
return G_IO_STATUS_ERROR;
}
else
{
if (channel->encoding && channel->read_buf->len > 0)
{
- g_set_error (error, G_CONVERT_ERROR, G_CONVERT_ERROR_PARTIAL_INPUT,
- _("Channel terminates in a partial character"));
+ g_set_error_literal (error, G_CONVERT_ERROR, G_CONVERT_ERROR_PARTIAL_INPUT,
+ _("Channel terminates in a partial character"));
return G_IO_STATUS_ERROR;
}
line_length = use_buf->len;
break;
}
- checked_to = MAX (use_buf->len - (line_term_len - 1), 0);
+ if (use_buf->len > line_term_len - 1)
+ checked_to = use_buf->len - (line_term_len - 1);
+ else
+ checked_to = 0;
}
done:
/**
* g_io_channel_read_to_end:
* @channel: a #GIOChannel
- * @str_return: Location to store a pointer to a string holding
- * the remaining data in the #GIOChannel. This data should
- * be freed with g_free() when no longer needed. This
- * data is terminated by an extra nul character, but there
- * may be other nuls in the intervening data.
- * @length: Location to store length of the data
- * @error: A location to return an error of type #GConvertError
+ * @str_return: (out) (array length=length) (element-type guint8): Location to
+ * store a pointer to a string holding the remaining data in the
+ * #GIOChannel. This data should be freed with g_free() when no
+ * longer needed. This data is terminated by an extra nul
+ * character, but there may be other nuls in the intervening data.
+ * @length: (out): location to store length of the data
+ * @error: location to return an error of type #GConvertError
* or #GIOChannelError
*
* Reads all the remaining data from the file.
*
- * Return value: %G_IO_STATUS_NORMAL on success. This function never
- * returns %G_IO_STATUS_EOF.
+ * Returns: %G_IO_STATUS_NORMAL on success.
+ * This function never returns %G_IO_STATUS_EOF.
**/
GIOStatus
-g_io_channel_read_to_end (GIOChannel *channel,
- gchar **str_return,
- gsize *length,
- GError **error)
+g_io_channel_read_to_end (GIOChannel *channel,
+ gchar **str_return,
+ gsize *length,
+ GError **error)
{
GIOStatus status;
if (!channel->use_buffer)
{
- g_set_error (error, G_CONVERT_ERROR, G_CONVERT_ERROR_FAILED,
- _("Can't do a raw read in g_io_channel_read_to_end"));
+ g_set_error_literal (error, G_CONVERT_ERROR, G_CONVERT_ERROR_FAILED,
+ _("Can't do a raw read in g_io_channel_read_to_end"));
return G_IO_STATUS_ERROR;
}
if (channel->encoding && channel->read_buf->len > 0)
{
- g_set_error (error, G_CONVERT_ERROR, G_CONVERT_ERROR_PARTIAL_INPUT,
- _("Channel terminates in a partial character"));
+ g_set_error_literal (error, G_CONVERT_ERROR, G_CONVERT_ERROR_PARTIAL_INPUT,
+ _("Channel terminates in a partial character"));
return G_IO_STATUS_ERROR;
}
/**
* g_io_channel_read_chars:
* @channel: a #GIOChannel
- * @buf: a buffer to read data into
- * @count: the size of the buffer. Note that the buffer may
- * not be complelely filled even if there is data
- * in the buffer if the remaining data is not a
- * complete character.
- * @bytes_read: The number of bytes read. This may be zero even on
- * success if count < 6 and the channel's encoding is non-%NULL.
- * This indicates that the next UTF-8 character is too wide for
- * the buffer.
- * @error: A location to return an error of type #GConvertError
- * or #GIOChannelError.
+ * @buf: (out caller-allocates) (array length=count) (element-type guint8):
+ * a buffer to read data into
+ * @count: (in): the size of the buffer. Note that the buffer may not be
+ * complelely filled even if there is data in the buffer if the
+ * remaining data is not a complete character.
+ * @bytes_read: (allow-none) (out): The number of bytes read. This may be
+ * zero even on success if count < 6 and the channel's encoding
+ * is non-%NULL. This indicates that the next UTF-8 character is
+ * too wide for the buffer.
+ * @error: a location to return an error of type #GConvertError
+ * or #GIOChannelError.
*
* Replacement for g_io_channel_read() with the new API.
*
- * Return value: the status of the operation.
- **/
+ * Returns: the status of the operation.
+ */
GIOStatus
-g_io_channel_read_chars (GIOChannel *channel,
- gchar *buf,
- gsize count,
- gsize *bytes_read,
- GError **error)
+g_io_channel_read_chars (GIOChannel *channel,
+ gchar *buf,
+ gsize count,
+ gsize *bytes_read,
+ GError **error)
{
GIOStatus status;
gsize got_bytes;
g_return_val_if_fail (channel != NULL, G_IO_STATUS_ERROR);
- g_return_val_if_fail ((error == NULL) || (*error == NULL),
- G_IO_STATUS_ERROR);
+ g_return_val_if_fail ((error == NULL) || (*error == NULL), G_IO_STATUS_ERROR);
g_return_val_if_fail (channel->is_readable, G_IO_STATUS_ERROR);
if (count == 0)
{
- *bytes_read = 0;
+ if (bytes_read)
+ *bytes_read = 0;
return G_IO_STATUS_NORMAL;
}
g_return_val_if_fail (buf != NULL, G_IO_STATUS_ERROR);
if (!channel->use_buffer)
{
gsize tmp_bytes;
-
+
g_assert (!channel->read_buf || channel->read_buf->len == 0);
status = channel->funcs->io_read (channel, buf, count, &tmp_bytes, error);
-
+
if (bytes_read)
- *bytes_read = tmp_bytes;
+ *bytes_read = tmp_bytes;
return status;
}
if (status == G_IO_STATUS_EOF && channel->encoding
&& BUF_LEN (channel->read_buf) > 0)
{
- g_set_error (error, G_CONVERT_ERROR,
- G_CONVERT_ERROR_PARTIAL_INPUT,
- _("Leftover unconverted data in read buffer"));
+ g_set_error_literal (error, G_CONVERT_ERROR,
+ G_CONVERT_ERROR_PARTIAL_INPUT,
+ _("Leftover unconverted data in read buffer"));
status = G_IO_STATUS_ERROR;
}
/**
* g_io_channel_read_unichar:
* @channel: a #GIOChannel
- * @thechar: a location to return a character
- * @error: A location to return an error of type #GConvertError
+ * @thechar: (out): a location to return a character
+ * @error: a location to return an error of type #GConvertError
* or #GIOChannelError
*
+ * Reads a Unicode character from @channel.
* This function cannot be called on a channel with %NULL encoding.
*
- * Return value: a #GIOStatus
+ * Returns: a #GIOStatus
**/
GIOStatus
-g_io_channel_read_unichar (GIOChannel *channel,
- gunichar *thechar,
- GError **error)
+g_io_channel_read_unichar (GIOChannel *channel,
+ gunichar *thechar,
+ GError **error)
{
GIOStatus status = G_IO_STATUS_NORMAL;
if (status == G_IO_STATUS_EOF && BUF_LEN (channel->read_buf) > 0)
{
- g_set_error (error, G_CONVERT_ERROR,
- G_CONVERT_ERROR_PARTIAL_INPUT,
- _("Leftover unconverted data in read buffer"));
+ g_set_error_literal (error, G_CONVERT_ERROR,
+ G_CONVERT_ERROR_PARTIAL_INPUT,
+ _("Leftover unconverted data in read buffer"));
status = G_IO_STATUS_ERROR;
}
/**
* g_io_channel_write_chars:
* @channel: a #GIOChannel
- * @buf: a buffer to write data from
+ * @buf: (array) (element-type guint8): a buffer to write data from
* @count: the size of the buffer. If -1, the buffer
* is taken to be a nul-terminated string.
- * @bytes_written: The number of bytes written. This can be nonzero
+ * @bytes_written: (out): The number of bytes written. This can be nonzero
* even if the return value is not %G_IO_STATUS_NORMAL.
* If the return value is %G_IO_STATUS_NORMAL and the
* channel is blocking, this will always be equal
* to @count if @count >= 0.
- * @error: A location to return an error of type #GConvertError
+ * @error: a location to return an error of type #GConvertError
* or #GIOChannelError
*
* Replacement for g_io_channel_write() with the new API.
* may only be made on a channel from which data has been read in the
* cases described in the documentation for g_io_channel_set_encoding ().
*
- * Return value: the status of the operation.
+ * Returns: the status of the operation.
**/
GIOStatus
-g_io_channel_write_chars (GIOChannel *channel,
- const gchar *buf,
- gssize count,
- gsize *bytes_written,
- GError **error)
+g_io_channel_write_chars (GIOChannel *channel,
+ const gchar *buf,
+ gssize count,
+ gsize *bytes_written,
+ GError **error)
{
GIOStatus status;
gssize wrote_bytes = 0;
* and never receiving an EAGAIN.
*/
- if (channel->write_buf->len >= channel->buf_size)
+ if (channel->write_buf->len >= channel->buf_size - MAX_CHAR_SIZE)
{
gsize did_write = 0, this_time;
{
const gchar *from_buf;
gsize from_buf_len, from_buf_old_len, left_len;
- size_t err;
+ gsize err;
gint errnum;
if (channel->partial_write_buf[0] != '\0')
if (!g_utf8_validate (from_buf, try_len, &badchar))
{
gunichar try_char;
+ gsize incomplete_len = from_buf + try_len - badchar;
- left_len = from_buf + try_len - badchar;
+ left_len = from_buf + from_buf_len - badchar;
- try_char = g_utf8_get_char_validated (badchar, left_len);
+ try_char = g_utf8_get_char_validated (badchar, incomplete_len);
switch (try_char)
{
case -2:
- g_assert (left_len < 6);
+ g_assert (incomplete_len < 6);
if (try_len == from_buf_len)
{
errnum = EINVAL;
- err = (size_t) -1;
+ err = (gsize) -1;
}
else
{
errnum = 0;
- err = (size_t) -1;
+ err = (gsize) 0;
}
break;
case -1:
g_warning ("Invalid UTF-8 passed to g_io_channel_write_chars().");
/* FIXME bail here? */
errnum = EILSEQ;
- err = (size_t) -1;
+ err = (gsize) -1;
break;
default:
g_assert_not_reached ();
- err = (size_t) -1;
+ err = (gsize) -1;
errnum = 0; /* Don't confunse the compiler */
}
}
else
{
- err = (size_t) 0;
+ err = (gsize) 0;
errnum = 0;
- left_len = 0;
+ left_len = from_buf_len - try_len;
}
g_string_append_len (channel->write_buf, from_buf,
- try_len - left_len);
- from_buf += try_len - left_len;
+ from_buf_len - left_len);
+ from_buf += from_buf_len - left_len;
}
else
{
- space_in_buf);
}
- if (err == (size_t) -1)
+ if (err == (gsize) -1)
{
switch (errnum)
{
}
break;
case EILSEQ:
- g_set_error (error, G_CONVERT_ERROR,
+ g_set_error_literal (error, G_CONVERT_ERROR,
G_CONVERT_ERROR_ILLEGAL_SEQUENCE,
_("Invalid byte sequence in conversion input"));
if (from_buf_old_len > 0 && from_buf_len == left_len)
* g_io_channel_write_unichar:
* @channel: a #GIOChannel
* @thechar: a character
- * @error: A location to return an error of type #GConvertError
+ * @error: location to return an error of type #GConvertError
* or #GIOChannelError
*
+ * Writes a Unicode character to @channel.
* This function cannot be called on a channel with %NULL encoding.
*
- * Return value: a #GIOStatus
+ * Returns: a #GIOStatus
**/
GIOStatus
-g_io_channel_write_unichar (GIOChannel *channel,
- gunichar thechar,
- GError **error)
+g_io_channel_write_unichar (GIOChannel *channel,
+ gunichar thechar,
+ GError **error)
{
GIOStatus status;
gchar static_buf[6];
}
/**
- * g_io_channel_error_quark:
+ * G_IO_CHANNEL_ERROR:
*
- * Return value: The quark used as %G_IO_CHANNEL_ERROR
+ * Error domain for #GIOChannel operations. Errors in this domain will
+ * be from the #GIOChannelError enumeration. See #GError for
+ * information on error domains.
+ **/
+/**
+ * GIOChannelError:
+ * @G_IO_CHANNEL_ERROR_FBIG: File too large.
+ * @G_IO_CHANNEL_ERROR_INVAL: Invalid argument.
+ * @G_IO_CHANNEL_ERROR_IO: IO error.
+ * @G_IO_CHANNEL_ERROR_ISDIR: File is a directory.
+ * @G_IO_CHANNEL_ERROR_NOSPC: No space left on device.
+ * @G_IO_CHANNEL_ERROR_NXIO: No such device or address.
+ * @G_IO_CHANNEL_ERROR_OVERFLOW: Value too large for defined datatype.
+ * @G_IO_CHANNEL_ERROR_PIPE: Broken pipe.
+ * @G_IO_CHANNEL_ERROR_FAILED: Some other error.
+ *
+ * Error codes returned by #GIOChannel operations.
**/
-GQuark
-g_io_channel_error_quark (void)
-{
- static GQuark q = 0;
- if (q == 0)
- q = g_quark_from_static_string ("g-io-channel-error-quark");
- return q;
-}
+G_DEFINE_QUARK (g-io-channel-error-quark, g_io_channel_error)
projects / platform / upstream / glib.git / blobdiff