sendmail/libsm/stringf.c

/*
 * Copyright (c) 2000-2001 Sendmail, Inc. and its suppliers.
 *  All rights reserved.
 *
 * By using this file, you agree to the terms and conditions set
 * forth in the LICENSE file which can be found at the top level of
 * the sendmail distribution.
 */

#pragma ident   "%Z%%M% %I% %E% SMI"

#include <sm/gen.h>
SM_RCSID("@(#)$Id: stringf.c,v 1.13 2001/03/03 03:40:43 ca Exp $")
#include <errno.h>
#include <stdio.h>
#include <sm/exc.h>
#include <sm/heap.h>
#include <sm/string.h>
#include <sm/varargs.h>

/*
**  SM_STRINGF_X -- printf() to dynamically allocated string.
**
**  Takes the same arguments as printf.
**  It returns a pointer to a dynamically allocated string
**  containing the text that printf would print to standard output.
**  It raises an exception on error.
**  The name comes from a PWB Unix function called stringf.
**
**  Parameters:
**      fmt -- format string.
**      ... -- arguments for format.
**
**  Returns:
**      Pointer to a dynamically allocated string.
**
**  Exceptions:
**      F:sm_heap -- out of memory (via sm_vstringf_x()).
*/

char *
#if SM_VA_STD
sm_stringf_x(const char *fmt, ...)
#else /* SM_VA_STD */
sm_stringf_x(fmt, va_alist)
    const char *fmt;
    va_dcl
#endif /* SM_VA_STD */
{
    SM_VA_LOCAL_DECL
    char *s;

    SM_VA_START(ap, fmt);
    s = sm_vstringf_x(fmt, ap);
    SM_VA_END(ap);
    return s;
}

/*
**  SM_VSTRINGF_X -- printf() to dynamically allocated string.
**
**  Parameters:
**      fmt -- format string.
**      ap -- arguments for format.
**
**  Returns:
**      Pointer to a dynamically allocated string.
**
**  Exceptions:
**      F:sm_heap -- out of memory
*/

char *
sm_vstringf_x(fmt, ap)
    const char *fmt;
    SM_VA_LOCAL_DECL
{
    char *s;

    sm_vasprintf(&s, fmt, ap);
    if (s == NULL)
    {
        if (errno == ENOMEM)
            sm_exc_raise_x(&SmHeapOutOfMemory);
        sm_exc_raisenew_x(&SmEtypeOs, errno, "sm_vasprintf", NULL);
    }
    return s;
}