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/* SPDX-License-Identifier: GPL-2.0 */
/*
* C++ stream style string builder used in KUnit for building messages.
*
* Copyright (C) 2019, Google LLC.
* Author: Brendan Higgins <brendanhiggins@google.com>
*/
#ifndef _KUNIT_STRING_STREAM_H
#define _KUNIT_STRING_STREAM_H
#include <linux/spinlock.h>
#include <linux/types.h>
#include <stdarg.h>
struct string_stream_fragment {
struct kunit *test;
struct list_head node;
char *fragment;
};
struct string_stream {
size_t length;
struct list_head fragments;
/* length and fragments are protected by this lock */
spinlock_t lock;
struct kunit *test;
gfp_t gfp;
};
struct kunit;
struct string_stream *alloc_string_stream(struct kunit *test, gfp_t gfp);
int __printf(2, 3) string_stream_add(struct string_stream *stream,
const char *fmt, ...);
int __printf(2, 0) string_stream_vadd(struct string_stream *stream,
const char *fmt,
va_list args);
char *string_stream_get_string(struct string_stream *stream);
int string_stream_append(struct string_stream *stream,
struct string_stream *other);
bool string_stream_is_empty(struct string_stream *stream);
int string_stream_destroy(struct string_stream *stream);
#endif /* _KUNIT_STRING_STREAM_H */
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