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168 lines
4.5 KiB
Groff
168 lines
4.5 KiB
Groff
.\" Copyright (c) 2001 Jeroen Ruigrok van der Werven <asmodai@FreeBSD.org>
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.\" All rights reserved.
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.\"
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.\" Redistribution and use in source and binary forms, with or without
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.\" modification, are permitted provided that the following conditions
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.\" are met:
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.\" 1. Redistributions of source code must retain the above copyright
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.\" notice, this list of conditions and the following disclaimer.
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.\" 2. Redistributions in binary form must reproduce the above copyright
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.\" notice, this list of conditions and the following disclaimer in the
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.\" documentation and/or other materials provided with the distribution.
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.\"
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.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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.\" SUCH DAMAGE.
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.\"
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.\" $FreeBSD$
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.\"
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.Dd October 12, 2002
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.Dt STRFMON 3
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.Os
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.Sh NAME
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.Nm strfmon
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.Nd convert monetary value to string
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.Sh LIBRARY
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.Lb libc
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.Sh SYNOPSIS
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.In monetary.h
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.Ft ssize_t
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.Fn strfmon "char * restrict s" "size_t maxsize" "const char * restrict format" "..."
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.Sh DESCRIPTION
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The
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.Fn strfmon
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function places characters into the array pointed to by
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.Fa s
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as controlled by the string pointed to by
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.Fa format .
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No more than
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.Fa maxsize
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bytes are placed into the array.
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.Pp
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The format string is composed of zero or more directives:
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ordinary characters (not
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.Cm % ) ,
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which are copied unchanged to the output stream; and conversion
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specifications, each of which results in fetching zero or more subsequent
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arguments.
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Each conversion specification is introduced by the
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.Cm %
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character.
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After the
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.Cm % ,
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the following appear in sequence:
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.Bl -bullet
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.It
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Zero or more of the following flags:
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.Bl -tag -width "XXX"
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.It Cm = Ns Ar f
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A
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.Sq Cm =
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character followed by another character
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.Ar f
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which is used as the numeric fill character.
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.It Cm ^
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Do not use grouping characters, regardless of the current locale default.
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.It Cm +
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Represent positive values by prefixing them with a positive sign,
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and negative values by prefixing them with a negative sign.
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This is the default.
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.It Cm \&(
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Enclose negative values in parentheses.
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.It Cm \&!
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Do not include a currency symbol in the output.
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.It Cm \-
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Left justify the result.
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Only valid when a field width is specified.
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.El
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.It
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An optional minimum field width as a decimal number.
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By default, there is no minimum width.
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.It
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A
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.Sq Cm #
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sign followed by a decimal number specifying the maximum
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expected number of digits after the radix character.
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.It
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A
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.Sq Cm \&.
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character followed by a decimal number specifying the number
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the number of digits after the radix character.
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.It
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One of the following conversion specifiers:
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.Bl -tag -width "XXX"
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.It Cm i
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The
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.Vt double
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argument is formatted as an international monetary amount.
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.It Cm n
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The
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.Vt double
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argument is formatted as a national monetary amount.
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.It Cm %
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A
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.Sq Li %
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character is written.
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.El
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.El
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.Sh RETURN VALUES
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If the total number of resulting bytes including the terminating
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.Dv NULL
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byte is not more than
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.Fa maxsize ,
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.Fn strfmon
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returns the number of bytes placed into the array pointed to by
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.Fa s ,
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not including the terminating
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.Dv NULL
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byte.
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Otherwise, \-1 is returned,
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the contents of the array are indeterminate,
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and
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.Va errno
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is set to indicate the error.
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.Sh ERRORS
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The
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.Fn strfmon
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function will fail if:
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.Bl -tag -width Er
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.It Bq Er E2BIG
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Conversion stopped due to lack of space in the buffer.
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.It Bq Er EINVAL
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The format string is invalid.
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.It Bq Er ENOMEM
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Not enough memory for temporary buffers.
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.El
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.Sh SEE ALSO
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.Xr localeconv 3
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.Sh STANDARDS
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The
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.Fn strfmon
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function
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conforms to
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.St -p1003.1-2001 .
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.Sh AUTHORS
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.An -nosplit
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The
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.Fn strfmon
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function was implemented by
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.An Alexey Zelkin Aq phantom@FreeBSD.org .
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.Pp
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This manual page was written by
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.An Jeroen Ruigrok van der Werven Aq asmodai@FreeBSD.org
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based on the standards' text.
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.Sh BUGS
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The
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.Fn strfmon
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function does not correctly handle multibyte characters in the
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.Fa format
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argument.
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