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23ce05f906
SPDX is an international standard for documenting software license requirements. Remove the existing headers and replace with a brief SPDX preamble. See: https://spdx.dev/use/specifications/ The script used to convert the files is added to "tools", and the file header templates in headers/ are updated. Signed-off-by: H. Peter Anvin (Intel) <hpa@zytor.com>
69 lines
1.6 KiB
C
69 lines
1.6 KiB
C
/* SPDX-License-Identifier: BSD-2-Clause */
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/* Copyright 1996-2018 The NASM Authors - All Rights Reserved */
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#include "compiler.h"
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#include "nasmlib.h"
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#include "alloc.h"
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/*
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* nasm_[v]asprintf() are variants of the semi-standard [v]asprintf()
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* functions, except that we return the pointer instead of a count.
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* The length of the string (with or without the final NUL) is available
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* by calling nasm_last_string_{len,size}() afterwards.
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*
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* nasm_[v]axprintf() are similar, but allocates a user-defined amount
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* of storage before the string, and returns a pointer to the
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* allocated buffer. The size of that area is not included in the value
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* returned by nasm_last_string_size().
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*/
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void *nasm_vaxprintf(size_t extra, const char *fmt, va_list ap)
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{
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char *strp;
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va_list xap;
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size_t bytes;
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int len;
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va_copy(xap, ap);
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len = vsnprintf(NULL, 0, fmt, xap);
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nasm_assert(len >= 0);
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bytes = (size_t)len + 1;
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_nasm_last_string_size = bytes;
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va_end(xap);
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strp = nasm_malloc(extra+bytes);
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memset(strp, 0, extra);
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len = vsnprintf(strp+extra, bytes, fmt, ap);
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nasm_assert(bytes == (size_t)len + 1);
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return strp;
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}
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char *nasm_vasprintf(const char *fmt, va_list ap)
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{
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return nasm_vaxprintf(0, fmt, ap);
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}
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void *nasm_axprintf(size_t extra, const char *fmt, ...)
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{
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va_list ap;
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void *strp;
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va_start(ap, fmt);
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strp = nasm_vaxprintf(extra, fmt, ap);
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va_end(ap);
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return strp;
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}
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char *nasm_asprintf(const char *fmt, ...)
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{
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va_list ap;
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char *strp;
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va_start(ap, fmt);
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strp = nasm_vaxprintf(0, fmt, ap);
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va_end(ap);
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return strp;
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}
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