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Sergey Semyonov (Serge)
196
contrib/sdk/sources/cairo/src/cairo-output-stream-private.h
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196
contrib/sdk/sources/cairo/src/cairo-output-stream-private.h
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/* cairo - a vector graphics library with display and print output
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*
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* Copyright © 2006 Red Hat, Inc
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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 either under the terms of the GNU Lesser General Public
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* License version 2.1 as published by the Free Software Foundation
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* (the "LGPL") or, at your option, under the terms of the Mozilla
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* Public License Version 1.1 (the "MPL"). If you do not alter this
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* notice, a recipient may use your version of this file under either
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* the MPL or the LGPL.
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*
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* You should have received a copy of the LGPL along with this library
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* in the file COPYING-LGPL-2.1; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
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* You should have received a copy of the MPL along with this library
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* in the file COPYING-MPL-1.1
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*
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* The contents of this file are subject to the Mozilla Public License
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* Version 1.1 (the "License"); you may not use this file except in
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* compliance with the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
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* OF ANY KIND, either express or implied. See the LGPL or the MPL for
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* the specific language governing rights and limitations.
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*
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* The Original Code is the cairo graphics library.
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*
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* The Initial Developer of the Original Code is Red Hat, Inc.
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*
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* Author(s):
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* Kristian Høgsberg <krh@redhat.com>
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*/
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#ifndef CAIRO_OUTPUT_STREAM_PRIVATE_H
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#define CAIRO_OUTPUT_STREAM_PRIVATE_H
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#include "cairo-compiler-private.h"
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#include "cairo-types-private.h"
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#include <stdlib.h>
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#include <stdio.h>
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#include <stdarg.h>
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typedef cairo_status_t
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(*cairo_output_stream_write_func_t) (cairo_output_stream_t *output_stream,
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const unsigned char *data,
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unsigned int length);
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typedef cairo_status_t
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(*cairo_output_stream_flush_func_t) (cairo_output_stream_t *output_stream);
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typedef cairo_status_t
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(*cairo_output_stream_close_func_t) (cairo_output_stream_t *output_stream);
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struct _cairo_output_stream {
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cairo_output_stream_write_func_t write_func;
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cairo_output_stream_flush_func_t flush_func;
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cairo_output_stream_close_func_t close_func;
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unsigned long position;
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cairo_status_t status;
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cairo_bool_t closed;
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};
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extern const cairo_private cairo_output_stream_t _cairo_output_stream_nil;
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cairo_private void
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_cairo_output_stream_init (cairo_output_stream_t *stream,
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cairo_output_stream_write_func_t write_func,
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cairo_output_stream_flush_func_t flush_func,
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cairo_output_stream_close_func_t close_func);
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cairo_private cairo_status_t
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_cairo_output_stream_fini (cairo_output_stream_t *stream);
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/* We already have the following declared in cairo.h:
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typedef cairo_status_t (*cairo_write_func_t) (void *closure,
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const unsigned char *data,
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unsigned int length);
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*/
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typedef cairo_status_t (*cairo_close_func_t) (void *closure);
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/* This function never returns %NULL. If an error occurs (NO_MEMORY)
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* while trying to create the output stream this function returns a
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* valid pointer to a nil output stream.
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*
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* Note that even with a nil surface, the close_func callback will be
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* called by a call to _cairo_output_stream_close or
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* _cairo_output_stream_destroy.
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*/
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cairo_private cairo_output_stream_t *
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_cairo_output_stream_create (cairo_write_func_t write_func,
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cairo_close_func_t close_func,
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void *closure);
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cairo_private cairo_output_stream_t *
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_cairo_output_stream_create_in_error (cairo_status_t status);
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/* Tries to flush any buffer maintained by the stream or its delegates. */
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cairo_private cairo_status_t
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_cairo_output_stream_flush (cairo_output_stream_t *stream);
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/* Returns the final status value associated with this object, just
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* before its last gasp. This final status value will capture any
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* status failure returned by the stream's close_func as well. */
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cairo_private cairo_status_t
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_cairo_output_stream_close (cairo_output_stream_t *stream);
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/* Returns the final status value associated with this object, just
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* before its last gasp. This final status value will capture any
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* status failure returned by the stream's close_func as well. */
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cairo_private cairo_status_t
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_cairo_output_stream_destroy (cairo_output_stream_t *stream);
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cairo_private void
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_cairo_output_stream_write (cairo_output_stream_t *stream,
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const void *data, size_t length);
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cairo_private void
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_cairo_output_stream_write_hex_string (cairo_output_stream_t *stream,
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const unsigned char *data,
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size_t length);
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cairo_private void
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_cairo_output_stream_vprintf (cairo_output_stream_t *stream,
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const char *fmt,
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va_list ap) CAIRO_PRINTF_FORMAT ( 2, 0);
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cairo_private void
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_cairo_output_stream_printf (cairo_output_stream_t *stream,
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const char *fmt,
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...) CAIRO_PRINTF_FORMAT (2, 3);
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cairo_private long
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_cairo_output_stream_get_position (cairo_output_stream_t *stream);
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cairo_private cairo_status_t
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_cairo_output_stream_get_status (cairo_output_stream_t *stream);
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/* This function never returns %NULL. If an error occurs (NO_MEMORY or
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* WRITE_ERROR) while trying to create the output stream this function
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* returns a valid pointer to a nil output stream.
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*
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* Note: Even if a nil surface is returned, the caller should still
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* call _cairo_output_stream_destroy (or _cairo_output_stream_close at
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* least) in order to ensure that everything is properly cleaned up.
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*/
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cairo_private cairo_output_stream_t *
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_cairo_output_stream_create_for_filename (const char *filename);
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/* This function never returns %NULL. If an error occurs (NO_MEMORY or
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* WRITE_ERROR) while trying to create the output stream this function
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* returns a valid pointer to a nil output stream.
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*
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* The caller still "owns" file and is responsible for calling fclose
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* on it when finished. The stream will not do this itself.
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*/
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cairo_private cairo_output_stream_t *
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_cairo_output_stream_create_for_file (FILE *file);
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cairo_private cairo_output_stream_t *
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_cairo_memory_stream_create (void);
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cairo_private void
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_cairo_memory_stream_copy (cairo_output_stream_t *base,
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cairo_output_stream_t *dest);
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cairo_private int
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_cairo_memory_stream_length (cairo_output_stream_t *stream);
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cairo_private cairo_status_t
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_cairo_memory_stream_destroy (cairo_output_stream_t *abstract_stream,
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unsigned char **data_out,
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unsigned long *length_out);
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cairo_private cairo_output_stream_t *
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_cairo_null_stream_create (void);
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/* cairo-base85-stream.c */
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cairo_private cairo_output_stream_t *
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_cairo_base85_stream_create (cairo_output_stream_t *output);
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/* cairo-base64-stream.c */
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cairo_private cairo_output_stream_t *
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_cairo_base64_stream_create (cairo_output_stream_t *output);
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/* cairo-deflate-stream.c */
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cairo_private cairo_output_stream_t *
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_cairo_deflate_stream_create (cairo_output_stream_t *output);
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#endif /* CAIRO_OUTPUT_STREAM_PRIVATE_H */
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