文件操作 - BIO_printf.pod

文件: /usr/local/src/openssl-1.1.1w/doc/man3/BIO_printf.pod

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=pod

=head1 NAME

BIO_printf, BIO_vprintf, BIO_snprintf, BIO_vsnprintf
- formatted output to a BIO

=head1 SYNOPSIS

#include <openssl/bio.h>

int BIO_printf(BIO *bio, const char *format, ...)
 int BIO_vprintf(BIO *bio, const char *format, va_list args)

int BIO_snprintf(char *buf, size_t n, const char *format, ...)
 int BIO_vsnprintf(char *buf, size_t n, const char *format, va_list args)

=head1 DESCRIPTION

BIO_printf() is similar to the standard C printf() function, except that
the output is sent to the specified BIO, B<bio>, rather than standard
output.  All common format specifiers are supported.

BIO_vprintf() is similar to the vprintf() function found on many platforms,
the output is sent to the specified BIO, B<bio>, rather than standard
output.  All common format specifiers are supported. The argument
list B<args> is a stdarg argument list.

BIO_snprintf() is for platforms that do not have the common snprintf()
function. It is like sprintf() except that the size parameter, B<n>,
specifies the size of the output buffer.

BIO_vsnprintf() is to BIO_snprintf() as BIO_vprintf() is to BIO_printf().

=head1 RETURN VALUES

All functions return the number of bytes written, or -1 on error.
For BIO_snprintf() and BIO_vsnprintf() this includes when the output
buffer is too small.

=head1 COPYRIGHT

Licensed under the OpenSSL license (the "License").  You may not use
this file except in compliance with the License.  You can obtain a copy
in the file LICENSE in the source distribution or at
L<https://www.openssl.org/source/license.html>.

=cut

文件操作 - BIO_printf.pod

文件: /usr/local/src/openssl-1.1.1w/doc/man3/BIO_printf.pod

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