202 lines
6.1 KiB
Plaintext
202 lines
6.1 KiB
Plaintext
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.\" ========================================================================
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.\"
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.IX Title "BIO_F_PREFIX 3ossl"
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.TH BIO_F_PREFIX 3ossl "2024-01-30" "3.2.1" "OpenSSL"
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.\" For nroff, turn off justification. Always turn off hyphenation; it makes
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.\" way too many mistakes in technical documents.
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.if n .ad l
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.nh
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.SH "NAME"
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BIO_f_prefix, BIO_set_prefix, BIO_set_indent, BIO_get_indent
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\&\- prefix BIO filter
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.SH "SYNOPSIS"
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.IX Header "SYNOPSIS"
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.Vb 1
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\& #include <openssl/bio.h>
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\&
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\& const BIO_METHOD *BIO_f_prefix(void);
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\& long BIO_set_prefix(BIO *b, const char *prefix);
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\& long BIO_set_indent(BIO *b, long indent);
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\& long BIO_get_indent(BIO *b);
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.Ve
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.SH "DESCRIPTION"
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.IX Header "DESCRIPTION"
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\&\fIBIO_f_cipher()\fR returns the prefix \s-1BIO\s0 method. This is a filter for
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text output, where each line gets automatically prefixed and indented
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according to user input.
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.PP
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The prefix and the indentation are combined. For each line of output
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going through this filter, the prefix is output first, then the amount
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of additional spaces indicated by the indentation, and then the line
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itself.
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.PP
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By default, there is no prefix, and indentation is set to 0.
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.PP
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\&\fIBIO_set_prefix()\fR sets the prefix to be used for future lines of
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text, using \fIprefix\fR. \fIprefix\fR may be \s-1NULL,\s0 signifying that there
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should be no prefix. If \fIprefix\fR isn't \s-1NULL,\s0 this function makes a
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copy of it.
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.PP
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\&\fIBIO_set_indent()\fR sets the indentation to be used for future lines of
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text, using \fIindent\fR. Negative values are not allowed.
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.PP
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\&\fIBIO_get_indent()\fR gets the current indentation.
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.SH "NOTES"
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.IX Header "NOTES"
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\&\fIBIO_set_prefix()\fR, \fIBIO_set_indent()\fR and \fIBIO_get_indent()\fR are
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implemented as macros.
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.SH "RETURN VALUES"
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.IX Header "RETURN VALUES"
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\&\fIBIO_f_prefix()\fR returns the prefix \s-1BIO\s0 method.
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.PP
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\&\fIBIO_set_prefix()\fR returns 1 if the prefix was correctly set, or <=0 on
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failure.
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.PP
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\&\fIBIO_set_indent()\fR returns 1 if the prefix was correctly set, or <=0 on
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failure.
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.PP
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\&\fIBIO_get_indent()\fR returns the current indentation, or a negative value for failure.
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.SH "SEE ALSO"
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.IX Header "SEE ALSO"
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\&\fIbio\fR\|(7)
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.SH "COPYRIGHT"
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.IX Header "COPYRIGHT"
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Copyright 2019 The OpenSSL Project Authors. All Rights Reserved.
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.PP
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Licensed under the Apache License 2.0 (the \*(L"License\*(R"). You may not use
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this file except in compliance with the License. You can obtain a copy
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in the file \s-1LICENSE\s0 in the source distribution or at
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<https://www.openssl.org/source/license.html>.
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