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/* ----------------------------------------------------------------------- *
*
* Copyright 1996-2018 The NASM Authors - All Rights Reserved
* See the file AUTHORS included with the NASM distribution for
* the specific copyright holders.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following
* conditions are met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimer in the documentation and/or other materials provided
* with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
* CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
* EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* ----------------------------------------------------------------------- */
#include "compiler.h"
#include "nasmlib.h"
#include "alloc.h"
/*
* nasm_[v]asprintf() are variants of the semi-standard [v]asprintf()
* functions, except that we return the pointer instead of a count.
* The length of the string (with or without the final NUL) is available
* by calling nasm_last_string_{len,size}() afterwards.
*
* nasm_[v]axprintf() are similar, but allocates a user-defined amount
* of storage before the string, and returns a pointer to the
* allocated buffer. The size of that area is not included in the value
* returned by nasm_last_string_size().
*/
void *nasm_vaxprintf(size_t extra, const char *fmt, va_list ap)
{
char *strp;
va_list xap;
size_t bytes;
va_copy(xap, ap);
bytes = vsnprintf(NULL, 0, fmt, xap) + 1;
_nasm_last_string_size = bytes;
va_end(xap);
strp = nasm_malloc(extra+bytes);
memset(strp, 0, extra);
vsnprintf(strp+extra, bytes, fmt, ap);
return strp;
}
char *nasm_vasprintf(const char *fmt, va_list ap)
{
return nasm_vaxprintf(0, fmt, ap);
}
void *nasm_axprintf(size_t extra, const char *fmt, ...)
{
va_list ap;
void *strp;
va_start(ap, fmt);
strp = nasm_vaxprintf(extra, fmt, ap);
va_end(ap);
return strp;
}
char *nasm_asprintf(const char *fmt, ...)
{
va_list ap;
char *strp;
va_start(ap, fmt);
strp = nasm_vaxprintf(0, fmt, ap);
va_end(ap);
return strp;
}
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