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/*
* upb - a minimalist implementation of protocol buffers.
*
* This file contains upb_bytesrc and upb_bytesink implementations for
* upb_string.
*
* Copyright (c) 2009-2010 Joshua Haberman. See LICENSE for details.
*/
#ifndef UPB_STRSTREAM_H
#define UPB_STRSTREAM_H
#include "upb_stream.h"
#ifdef __cplusplus
extern "C" {
#endif
/* upb_stringsrc **************************************************************/
struct _upb_stringsrc {
upb_bytesrc bytesrc;
upb_string *str;
upb_strlen_t offset;
};
typedef struct _upb_stringsrc upb_stringsrc;
// Create/free a stringsrc.
void upb_stringsrc_init(upb_stringsrc *s);
void upb_stringsrc_uninit(upb_stringsrc *s);
// Resets the stringsrc to a state where it will vend the given string. The
// stringsrc will take a reference on the string, so the caller need not ensure
// that it outlives the stringsrc. A stringsrc can be reset multiple times.
void upb_stringsrc_reset(upb_stringsrc *s, upb_string *str);
// Returns the upb_bytesrc* for this stringsrc. Invalidated by reset above.
upb_bytesrc *upb_stringsrc_bytesrc(upb_stringsrc *s);
/* upb_stringsink *************************************************************/
struct upb_stringsink;
typedef struct upb_stringsink upb_stringsink;
// Create/free a stringsrc.
upb_stringsink *upb_stringsink_new();
void upb_stringsink_free(upb_stringsink *s);
// Gets a string containing the data that has been written to this stringsink.
// The caller does *not* own any references to this string.
upb_string *upb_stringsink_getstring(upb_stringsink *s);
// Clears the internal string of accumulated data, resetting it to empty.
void upb_stringsink_reset(upb_stringsink *s);
// Returns the upb_bytesrc* for this stringsrc. Invalidated by reset above.
upb_bytesink *upb_stringsrc_bytesink();
#ifdef __cplusplus
} /* extern "C" */
#endif
#endif
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