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/* SPDX-License-Identifier: GPL-2.0-or-later
* Copyright 2001-2002 NaN Holding BV. All rights reserved. */
#pragma once
/** \file
* \ingroup bli
* \brief A dynamically sized string ADT.
* \section aboutdynstr Dynamic String
* This ADT is designed purely for dynamic string creation
* through appending, not for general usage, the intent is
* to build up dynamic strings using a DynStr object, then
* convert it to a c-string and work with that.
*/
#include <stdarg.h>
#include "BLI_compiler_attrs.h"
#ifdef __cplusplus
extern "C" {
#endif
struct DynStr;
/** The abstract DynStr type. */
typedef struct DynStr DynStr;
/**
* Create a new #DynStr.
*
* \return Pointer to a new #DynStr.
*/
DynStr *BLI_dynstr_new(void) ATTR_MALLOC ATTR_WARN_UNUSED_RESULT;
/**
* Create a new #DynStr.
*
* \return Pointer to a new #DynStr.
*/
DynStr *BLI_dynstr_new_memarena(void) ATTR_MALLOC ATTR_WARN_UNUSED_RESULT;
/**
* Append a c-string to a #DynStr.
*
* \param ds: The #DynStr to append to.
* \param cstr: The c-string to append.
*/
void BLI_dynstr_append(DynStr *__restrict ds, const char *cstr) ATTR_NONNULL();
/**
* Append a length clamped c-string to a #DynStr.
*
* \param ds: The #DynStr to append to.
* \param cstr: The c-string to append.
* \param len: The maximum length of the c-string to copy.
*/
void BLI_dynstr_nappend(DynStr *__restrict ds, const char *cstr, int len) ATTR_NONNULL();
/**
* Append a c-string to a #DynStr, but with formatting like `printf`.
*
* \param ds: The #DynStr to append to.
* \param format: The `printf` format string to use.
*/
void BLI_dynstr_appendf(DynStr *__restrict ds, const char *__restrict format, ...)
ATTR_PRINTF_FORMAT(2, 3) ATTR_NONNULL(1, 2);
void BLI_dynstr_vappendf(DynStr *__restrict ds, const char *__restrict format, va_list args)
ATTR_PRINTF_FORMAT(2, 0) ATTR_NONNULL(1, 2);
/**
* Find the length of a #DynStr.
*
* \param ds: The #DynStr of interest.
* \return The length of \a ds.
*/
int BLI_dynstr_get_len(const DynStr *ds) ATTR_WARN_UNUSED_RESULT ATTR_NONNULL();
/**
* Get a #DynStr's contents as a c-string.
* \return The c-string which must be freed using #MEM_freeN.
*
* \param ds: The #DynStr of interest.
* \return The contents of \a ds as a c-string.
*/
char *BLI_dynstr_get_cstring(const DynStr *ds) ATTR_MALLOC ATTR_WARN_UNUSED_RESULT ATTR_NONNULL();
/**
* Get a #DynStr's contents as a c-string.
* The \a rets argument must be allocated to be at
* least the size of `BLI_dynstr_get_len(ds) + 1`.
*
* \param ds: The DynStr of interest.
* \param rets: The string to fill.
*/
void BLI_dynstr_get_cstring_ex(const DynStr *__restrict ds, char *__restrict rets) ATTR_NONNULL();
/**
* Clear the #DynStr
*
* \param ds: The DynStr to clear.
*/
void BLI_dynstr_clear(DynStr *ds) ATTR_NONNULL();
/**
* Free the #DynStr
*
* \param ds: The DynStr to free.
*/
void BLI_dynstr_free(DynStr *ds) ATTR_NONNULL();
#ifdef __cplusplus
}
#endif
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