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/*
* Copyright (C) the libgit2 contributors. All rights reserved.
*
* This file is part of libgit2, distributed under the GNU GPL v2 with
* a Linking Exception. For full terms see the included COPYING file.
*/
#ifndef INCLUDE_stackstr_h__
#define INCLUDE_stackstr_h__
#include "git2_util.h"
typedef struct {
/* Length of / number of bytes used by `data`. */
size_t len;
/* Size of the allocated `data` buffer. */
size_t size;
/* The actual string buffer data. */
char data[GIT_FLEX_ARRAY];
} git_staticstr;
#define git_staticstr_with_size(__size) \
struct { \
size_t len; \
size_t size; \
char data[__size]; \
}
#define git_staticstr_init(__str, __size) \
do { \
(__str)->len = 0; \
(__str)->size = __size; \
(__str)->data[0] = '\0'; \
} while(0)
#define git_staticstr_offset(__str) \
((__str)->data + (__str)->len)
#define git_staticstr_remain(__str) \
((__str)->len > (__str)->size ? 0 : ((__str)->size - (__str)->len))
#define git_staticstr_increase(__str, __len) \
do { ((__str)->len += __len); } while(0)
#define git_staticstr_consume_bytes(__str, __len) \
do { git_staticstr_consume(__str, (__str)->data + __len); } while(0)
#define git_staticstr_consume(__str, __end) \
do { \
if (__end > (__str)->data && \
__end <= (__str)->data + (__str)->len) { \
size_t __consumed = __end - (__str)->data; \
memmove((__str)->data, __end, (__str)->len - __consumed); \
(__str)->len -= __consumed; \
(__str)->data[(__str)->len] = '\0'; \
} \
} while(0)
#define git_staticstr_clear(__str) \
do { \
(__str)->len = 0; \
(__str)->data[0] = 0; \
} while(0)
#endif
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