#include "gioerror.h"
#include "glibintl.h"
+#include <string.h>
/**
* SECTION:gdatainputstream
*
* Note that using G_DATA_STREAM_NEWLINE_TYPE_ANY is slightly unsafe. If a read
* chunk ends in "CR" we must read an additional byte to know if this is "CR" or
- * "CR LF", and this might block if there is no more data availible.
+ * "CR LF", and this might block if there is no more data available.
*
**/
void
/**
* g_data_input_stream_read_byte:
* @stream: a given #GDataInputStream.
- * @cancellable: optional #GCancellable object, %NULL to ignore.
+ * @cancellable: (allow-none): optional #GCancellable object, %NULL to ignore.
* @error: #GError for error reporting.
*
* Reads an unsigned 8-bit/1-byte value from @stream.
/**
* g_data_input_stream_read_int16:
* @stream: a given #GDataInputStream.
- * @cancellable: optional #GCancellable object, %NULL to ignore.
+ * @cancellable: (allow-none): optional #GCancellable object, %NULL to ignore.
* @error: #GError for error reporting.
*
* Reads a 16-bit/2-byte value from @stream.
/**
* g_data_input_stream_read_uint16:
* @stream: a given #GDataInputStream.
- * @cancellable: optional #GCancellable object, %NULL to ignore.
+ * @cancellable: (allow-none): optional #GCancellable object, %NULL to ignore.
* @error: #GError for error reporting.
*
* Reads an unsigned 16-bit/2-byte value from @stream.
/**
* g_data_input_stream_read_int32:
* @stream: a given #GDataInputStream.
- * @cancellable: optional #GCancellable object, %NULL to ignore.
+ * @cancellable: (allow-none): optional #GCancellable object, %NULL to ignore.
* @error: #GError for error reporting.
*
* Reads a signed 32-bit/4-byte value from @stream.
/**
* g_data_input_stream_read_uint32:
* @stream: a given #GDataInputStream.
- * @cancellable: optional #GCancellable object, %NULL to ignore.
+ * @cancellable: (allow-none): optional #GCancellable object, %NULL to ignore.
* @error: #GError for error reporting.
*
* Reads an unsigned 32-bit/4-byte value from @stream.
/**
* g_data_input_stream_read_int64:
* @stream: a given #GDataInputStream.
- * @cancellable: optional #GCancellable object, %NULL to ignore.
+ * @cancellable: (allow-none): optional #GCancellable object, %NULL to ignore.
* @error: #GError for error reporting.
*
* Reads a 64-bit/8-byte value from @stream.
/**
* g_data_input_stream_read_uint64:
* @stream: a given #GDataInputStream.
- * @cancellable: optional #GCancellable object, %NULL to ignore.
+ * @cancellable: (allow-none): optional #GCancellable object, %NULL to ignore.
* @error: #GError for error reporting.
*
* Reads an unsigned 64-bit/8-byte value from @stream.
/**
* g_data_input_stream_read_line:
* @stream: a given #GDataInputStream.
- * @length: a #gsize to get the length of the data read in.
- * @cancellable: optional #GCancellable object, %NULL to ignore.
+ * @length: (out): a #gsize to get the length of the data read in.
+ * @cancellable: (allow-none): optional #GCancellable object, %NULL to ignore.
* @error: #GError for error reporting.
*
- * Reads a line from the data input stream.
+ * Reads a line from the data input stream. Note that no encoding
+ * checks or conversion is performed; the input is not guaranteed to
+ * be UTF-8, and may in fact have embedded NUL characters.
*
* If @cancellable is not %NULL, then the operation can be cancelled by
* triggering the cancellable object from another thread. If the operation
* was cancelled, the error %G_IO_ERROR_CANCELLED will be returned.
*
- * Returns: a string with the line that was read in (without the newlines).
- * Set @length to a #gsize to get the length of the read line.
- * On an error, it will return %NULL and @error will be set. If there's no
- * content to read, it will still return %NULL, but @error won't be set.
+ * Returns: (transfer full) (array zero-terminated=1) (element-type guint8): a
+ * NUL terminated byte array with the line that was read in (without
+ * the newlines). Set @length to a #gsize to get the length of the
+ * read line. On an error, it will return %NULL and @error will be
+ * set. If there's no content to read, it will still return %NULL,
+ * but @error won't be set.
**/
char *
g_data_input_stream_read_line (GDataInputStream *stream,
return line;
}
+/**
+ * g_data_input_stream_read_line_utf8:
+ * @stream: a given #GDataInputStream.
+ * @length: (out): a #gsize to get the length of the data read in.
+ * @cancellable: (allow-none): optional #GCancellable object, %NULL to ignore.
+ * @error: #GError for error reporting.
+ *
+ * Reads a UTF-8 encoded line from the data input stream.
+ *
+ * If @cancellable is not %NULL, then the operation can be cancelled by
+ * triggering the cancellable object from another thread. If the operation
+ * was cancelled, the error %G_IO_ERROR_CANCELLED will be returned.
+ *
+ * Returns: (transfer full): a NUL terminated UTF-8 string with the
+ * line that was read in (without the newlines). Set @length to a
+ * #gsize to get the length of the read line. On an error, it will
+ * return %NULL and @error will be set. For UTF-8 conversion errors,
+ * the set error domain is %G_CONVERT_ERROR. If there's no content to
+ * read, it will still return %NULL, but @error won't be set.
+ *
+ * Since: 2.30
+ **/
+char *
+g_data_input_stream_read_line_utf8 (GDataInputStream *stream,
+ gsize *length,
+ GCancellable *cancellable,
+ GError **error)
+{
+ char *res;
+
+ res = g_data_input_stream_read_line (stream, length, cancellable, error);
+ if (!res)
+ return NULL;
+
+ if (!g_utf8_validate (res, -1, NULL))
+ {
+ g_set_error_literal (error, G_CONVERT_ERROR,
+ G_CONVERT_ERROR_ILLEGAL_SEQUENCE,
+ _("Invalid byte sequence in conversion input"));
+ g_free (res);
+ return NULL;
+ }
+ return res;
+}
+
static gssize
scan_for_chars (GDataInputStream *stream,
gsize *checked_out,
- const char *stop_chars)
+ const char *stop_chars,
+ gssize stop_chars_len)
{
GBufferedInputStream *bstream;
const char *buffer;
int i;
gsize available, checked;
const char *stop_char;
+ const char *stop_end;
bstream = G_BUFFERED_INPUT_STREAM (stream);
+ stop_end = stop_chars + stop_chars_len;
checked = *checked_out;
for (i = 0; checked < available && i < peeked; i++)
{
- for (stop_char = stop_chars; *stop_char != '\0'; stop_char++)
+ for (stop_char = stop_chars; stop_char != stop_end; stop_char++)
{
if (buffer[i] == *stop_char)
return (start + i);
* g_data_input_stream_read_until:
* @stream: a given #GDataInputStream.
* @stop_chars: characters to terminate the read.
- * @length: a #gsize to get the length of the data read in.
- * @cancellable: optional #GCancellable object, %NULL to ignore.
+ * @length: (out): a #gsize to get the length of the data read in.
+ * @cancellable: (allow-none): optional #GCancellable object, %NULL to ignore.
* @error: #GError for error reporting.
*
* Reads a string from the data input stream, up to the first
* Note that, in contrast to g_data_input_stream_read_until_async(),
* this function consumes the stop character that it finds.
*
- * Returns: a string with the data that was read before encountering
- * any of the stop characters. Set @length to a #gsize to get the length
- * of the string. This function will return %NULL on an error.
+ * Don't use this function in new code. Its functionality is
+ * inconsistent with g_data_input_stream_read_until_async(). Both
+ * functions will be marked as deprecated in a future release. Use
+ * g_data_input_stream_read_upto() instead, but note that that function
+ * does not consume the stop character.
+ *
+ * Returns: (transfer full): a string with the data that was read
+ * before encountering any of the stop characters. Set @length to
+ * a #gsize to get the length of the string. This function will
+ * return %NULL on an error.
*/
char *
g_data_input_stream_read_until (GDataInputStream *stream,
GError **error)
{
GBufferedInputStream *bstream;
- gsize checked;
- gssize found_pos;
- gssize res;
- int stop_char_len;
- char *data_until;
-
- g_return_val_if_fail (G_IS_DATA_INPUT_STREAM (stream), NULL);
+ gchar *result;
bstream = G_BUFFERED_INPUT_STREAM (stream);
- stop_char_len = 1;
- checked = 0;
+ result = g_data_input_stream_read_upto (stream, stop_chars, -1,
+ length, cancellable, error);
- while ((found_pos = scan_for_chars (stream, &checked, stop_chars)) == -1)
+ /* If we're not at end of stream then we have a stop_char to consume. */
+ if (result != NULL && g_buffered_input_stream_get_available (bstream) > 0)
{
- if (g_buffered_input_stream_get_available (bstream) ==
- g_buffered_input_stream_get_buffer_size (bstream))
- g_buffered_input_stream_set_buffer_size (bstream,
- 2 * g_buffered_input_stream_get_buffer_size (bstream));
+ gsize res;
+ gchar b;
- res = g_buffered_input_stream_fill (bstream, -1, cancellable, error);
- if (res < 0)
- return NULL;
- if (res == 0)
- {
- /* End of stream */
- if (g_buffered_input_stream_get_available (bstream) == 0)
- {
- if (length)
- *length = 0;
- return NULL;
- }
- else
- {
- found_pos = checked;
- stop_char_len = 0;
- break;
- }
- }
+ res = g_input_stream_read (G_INPUT_STREAM (stream), &b, 1, NULL, NULL);
+ g_assert (res == 1);
}
- data_until = g_malloc (found_pos + stop_char_len + 1);
-
- res = g_input_stream_read (G_INPUT_STREAM (stream),
- data_until,
- found_pos + stop_char_len,
- NULL, NULL);
- if (length)
- *length = (gsize)found_pos;
- g_warn_if_fail (res == found_pos + stop_char_len);
- data_until[found_pos] = 0;
-
- return data_until;
+ return result;
}
typedef struct
GCancellable *cancellable;
gchar *stop_chars;
+ gssize stop_chars_len;
gchar *line;
gsize length;
} GDataInputStreamReadData;
if (bytes < 0)
/* stream error. */
{
- g_simple_async_result_set_from_error (data->simple, error);
- g_error_free (error);
+ g_simple_async_result_take_error (data->simple, error);
data->checked = 0;
}
{
found_pos = scan_for_chars (data->stream,
&data->checked,
- data->stop_chars);
+ data->stop_chars,
+ data->stop_chars_len);
newline_len = 0;
}
else
static void
g_data_input_stream_read_async (GDataInputStream *stream,
const gchar *stop_chars,
+ gssize stop_chars_len,
gint io_priority,
GCancellable *cancellable,
GAsyncReadyCallback callback,
if (cancellable)
g_object_ref (cancellable);
data->cancellable = cancellable;
- data->stop_chars = g_strdup (stop_chars);
+ if (stop_chars_len == -1)
+ stop_chars_len = strlen (stop_chars);
+ data->stop_chars = g_memdup (stop_chars, stop_chars_len);
+ data->stop_chars_len = stop_chars_len;
data->io_priority = io_priority;
data->last_saw_cr = FALSE;
data->checked = 0;
* @stream: a given #GDataInputStream.
* @io_priority: the <link linkend="io-priority">I/O priority</link>
* of the request.
- * @cancellable: optional #GCancellable object, %NULL to ignore.
- * @callback: callback to call when the request is satisfied.
- * @user_data: the data to pass to callback function.
+ * @cancellable: (allow-none): optional #GCancellable object, %NULL to ignore.
+ * @callback: (scope async): callback to call when the request is satisfied.
+ * @user_data: (closure): the data to pass to callback function.
*
* The asynchronous version of g_data_input_stream_read_line(). It is
* an error to have two outstanding calls to this function.
g_return_if_fail (G_IS_DATA_INPUT_STREAM (stream));
g_return_if_fail (cancellable == NULL || G_IS_CANCELLABLE (cancellable));
- g_data_input_stream_read_async (stream, NULL, io_priority,
+ g_data_input_stream_read_async (stream, NULL, 0, io_priority,
cancellable, callback, user_data,
g_data_input_stream_read_line_async);
}
* @stop_chars: characters to terminate the read.
* @io_priority: the <link linkend="io-priority">I/O priority</link>
* of the request.
- * @cancellable: optional #GCancellable object, %NULL to ignore.
- * @callback: callback to call when the request is satisfied.
- * @user_data: the data to pass to callback function.
+ * @cancellable: (allow-none): optional #GCancellable object, %NULL to ignore.
+ * @callback: (scope async): callback to call when the request is satisfied.
+ * @user_data: (closure): the data to pass to callback function.
*
* The asynchronous version of g_data_input_stream_read_until().
* It is an error to have two outstanding calls to this function.
* can then call g_data_input_stream_read_until_finish() to get
* the result of the operation.
*
+ * Don't use this function in new code. Its functionality is
+ * inconsistent with g_data_input_stream_read_until(). Both functions
+ * will be marked as deprecated in a future release. Use
+ * g_data_input_stream_read_upto_async() instead.
+ *
* Since: 2.20
*/
void
g_return_if_fail (cancellable == NULL || G_IS_CANCELLABLE (cancellable));
g_return_if_fail (stop_chars != NULL);
- g_data_input_stream_read_async (stream, stop_chars, io_priority,
+ g_data_input_stream_read_async (stream, stop_chars, -1, io_priority,
cancellable, callback, user_data,
g_data_input_stream_read_until_async);
}
* g_data_input_stream_read_line_finish:
* @stream: a given #GDataInputStream.
* @result: the #GAsyncResult that was provided to the callback.
- * @length: a #gsize to get the length of the data read in.
+ * @length: (out): a #gsize to get the length of the data read in.
* @error: #GError for error reporting.
*
* Finish an asynchronous call started by
- * g_data_input_stream_read_line_async().
+ * g_data_input_stream_read_line_async(). Note the warning about
+ * string encoding in g_data_input_stream_read_line() applies here as
+ * well.
*
- * Returns: a string with the line that was read in (without the newlines).
- * Set @length to a #gsize to get the length of the read line.
- * On an error, it will return %NULL and @error will be set. If there's no
- * content to read, it will still return %NULL, but @error won't be set.
+ * Returns: (transfer full) (array zero-terminated=1) (element-type guint8): a
+ * NUL-terminated byte array with the line that was read in
+ * (without the newlines). Set @length to a #gsize to get the
+ * length of the read line. On an error, it will return %NULL and
+ * @error will be set. If there's no content to read, it will
+ * still return %NULL, but @error won't be set.
*
* Since: 2.20
*/
}
/**
+ * g_data_input_stream_read_line_finish_utf8:
+ * @stream: a given #GDataInputStream.
+ * @result: the #GAsyncResult that was provided to the callback.
+ * @length: (out): a #gsize to get the length of the data read in.
+ * @error: #GError for error reporting.
+ *
+ * Finish an asynchronous call started by
+ * g_data_input_stream_read_line_async().
+ *
+ * Returns: (transfer full): a string with the line that was read in
+ * (without the newlines). Set @length to a #gsize to get the length
+ * of the read line. On an error, it will return %NULL and @error
+ * will be set. For UTF-8 conversion errors, the set error domain is
+ * %G_CONVERT_ERROR. If there's no content to read, it will still
+ * return %NULL, but @error won't be set.
+ *
+ * Since: 2.30
+ */
+gchar *
+g_data_input_stream_read_line_finish_utf8 (GDataInputStream *stream,
+ GAsyncResult *result,
+ gsize *length,
+ GError **error)
+{
+ gchar *res;
+
+ res = g_data_input_stream_read_line_finish (stream, result, length, error);
+ if (!g_utf8_validate (res, -1, NULL))
+ {
+ g_set_error_literal (error, G_CONVERT_ERROR,
+ G_CONVERT_ERROR_ILLEGAL_SEQUENCE,
+ _("Invalid byte sequence in conversion input"));
+ g_free (res);
+ return NULL;
+ }
+ return res;
+}
+
+/**
* g_data_input_stream_read_until_finish:
* @stream: a given #GDataInputStream.
* @result: the #GAsyncResult that was provided to the callback.
- * @length: a #gsize to get the length of the data read in.
+ * @length: (out): a #gsize to get the length of the data read in.
* @error: #GError for error reporting.
*
* Finish an asynchronous call started by
*
* Since: 2.20
*
- * Returns: a string with the data that was read before encountering
- * any of the stop characters. Set @length to a #gsize to get the length
- * of the string. This function will return %NULL on an error.
+ * Returns: (transfer full): a string with the data that was read
+ * before encountering any of the stop characters. Set @length to
+ * a #gsize to get the length of the string. This function will
+ * return %NULL on an error.
*/
gchar *
g_data_input_stream_read_until_finish (GDataInputStream *stream,
return g_data_input_stream_read_finish (stream, result, length, error);
}
+
+/**
+ * g_data_input_stream_read_upto:
+ * @stream: a #GDataInputStream
+ * @stop_chars: characters to terminate the read
+ * @stop_chars_len: length of @stop_chars. May be -1 if @stop_chars is
+ * nul-terminated
+ * @length: (out): a #gsize to get the length of the data read in
+ * @cancellable: (allow-none): optional #GCancellable object, %NULL to ignore
+ * @error: #GError for error reporting
+ *
+ * Reads a string from the data input stream, up to the first
+ * occurrence of any of the stop characters.
+ *
+ * In contrast to g_data_input_stream_read_until(), this function
+ * does <emphasis>not</emphasis> consume the stop character. You have
+ * to use g_data_input_stream_read_byte() to get it before calling
+ * g_data_input_stream_read_upto() again.
+ *
+ * Note that @stop_chars may contain '\0' if @stop_chars_len is
+ * specified.
+ *
+ * Returns: (transfer full): a string with the data that was read
+ * before encountering any of the stop characters. Set @length to
+ * a #gsize to get the length of the string. This function will
+ * return %NULL on an error
+ *
+ * Since: 2.26
+ */
+char *
+g_data_input_stream_read_upto (GDataInputStream *stream,
+ const gchar *stop_chars,
+ gssize stop_chars_len,
+ gsize *length,
+ GCancellable *cancellable,
+ GError **error)
+{
+ GBufferedInputStream *bstream;
+ gsize checked;
+ gssize found_pos;
+ gssize res;
+ char *data_until;
+
+ g_return_val_if_fail (G_IS_DATA_INPUT_STREAM (stream), NULL);
+
+ if (stop_chars_len < 0)
+ stop_chars_len = strlen (stop_chars);
+
+ bstream = G_BUFFERED_INPUT_STREAM (stream);
+
+ checked = 0;
+
+ while ((found_pos = scan_for_chars (stream, &checked, stop_chars, stop_chars_len)) == -1)
+ {
+ if (g_buffered_input_stream_get_available (bstream) ==
+ g_buffered_input_stream_get_buffer_size (bstream))
+ g_buffered_input_stream_set_buffer_size (bstream,
+ 2 * g_buffered_input_stream_get_buffer_size (bstream));
+
+ res = g_buffered_input_stream_fill (bstream, -1, cancellable, error);
+ if (res < 0)
+ return NULL;
+ if (res == 0)
+ {
+ /* End of stream */
+ if (g_buffered_input_stream_get_available (bstream) == 0)
+ {
+ if (length)
+ *length = 0;
+ return NULL;
+ }
+ else
+ {
+ found_pos = checked;
+ break;
+ }
+ }
+ }
+
+ data_until = g_malloc (found_pos + 1);
+
+ res = g_input_stream_read (G_INPUT_STREAM (stream),
+ data_until,
+ found_pos,
+ NULL, NULL);
+ if (length)
+ *length = (gsize)found_pos;
+ g_warn_if_fail (res == found_pos);
+ data_until[found_pos] = 0;
+
+ return data_until;
+}
+
+/**
+ * g_data_input_stream_read_upto_async:
+ * @stream: a #GDataInputStream
+ * @stop_chars: characters to terminate the read
+ * @stop_chars_len: length of @stop_chars. May be -1 if @stop_chars is
+ * nul-terminated
+ * @io_priority: the <link linkend="io-priority">I/O priority</link>
+ * of the request.
+ * @cancellable: (allow-none): optional #GCancellable object, %NULL to ignore
+ * @callback: (scope async): callback to call when the request is satisfied
+ * @user_data: (closure): the data to pass to callback function
+ *
+ * The asynchronous version of g_data_input_stream_read_upto().
+ * It is an error to have two outstanding calls to this function.
+ *
+ * In contrast to g_data_input_stream_read_until(), this function
+ * does <emphasis>not</emphasis> consume the stop character. You have
+ * to use g_data_input_stream_read_byte() to get it before calling
+ * g_data_input_stream_read_upto() again.
+ *
+ * Note that @stop_chars may contain '\0' if @stop_chars_len is
+ * specified.
+ *
+ * When the operation is finished, @callback will be called. You
+ * can then call g_data_input_stream_read_upto_finish() to get
+ * the result of the operation.
+ *
+ * Since: 2.26
+ */
+void
+g_data_input_stream_read_upto_async (GDataInputStream *stream,
+ const gchar *stop_chars,
+ gssize stop_chars_len,
+ gint io_priority,
+ GCancellable *cancellable,
+ GAsyncReadyCallback callback,
+ gpointer user_data)
+{
+ g_return_if_fail (G_IS_DATA_INPUT_STREAM (stream));
+ g_return_if_fail (cancellable == NULL || G_IS_CANCELLABLE (cancellable));
+ g_return_if_fail (stop_chars != NULL);
+
+ g_data_input_stream_read_async (stream, stop_chars, stop_chars_len, io_priority,
+ cancellable, callback, user_data,
+ g_data_input_stream_read_upto_async);
+}
+
+/**
+ * g_data_input_stream_read_upto_finish:
+ * @stream: a #GDataInputStream
+ * @result: the #GAsyncResult that was provided to the callback
+ * @length: (out): a #gsize to get the length of the data read in
+ * @error: #GError for error reporting
+ *
+ * Finish an asynchronous call started by
+ * g_data_input_stream_read_upto_async().
+ *
+ * Note that this function does <emphasis>not</emphasis> consume the
+ * stop character. You have to use g_data_input_stream_read_byte() to
+ * get it before calling g_data_input_stream_read_upto_async() again.
+ *
+ * Returns: (transfer full): a string with the data that was read
+ * before encountering any of the stop characters. Set @length to
+ * a #gsize to get the length of the string. This function will
+ * return %NULL on an error.
+ *
+ * Since: 2.24
+ */
+gchar *
+g_data_input_stream_read_upto_finish (GDataInputStream *stream,
+ GAsyncResult *result,
+ gsize *length,
+ GError **error)
+{
+ g_return_val_if_fail (
+ g_simple_async_result_is_valid (result, G_OBJECT (stream),
+ g_data_input_stream_read_upto_async), NULL);
+
+ return g_data_input_stream_read_finish (stream, result, length, error);
+}