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48 lines
1.5 KiB
Plaintext
48 lines
1.5 KiB
Plaintext
=pod
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=head1 NAME
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OPENSSL_strcasecmp, OPENSSL_strncasecmp - compare two strings ignoring case
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=head1 SYNOPSIS
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#include <openssl/crypto.h>
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int OPENSSL_strcasecmp(const char *s1, const char *s2);
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int OPENSSL_strncasecmp(const char *s1, const char *s2, size_t n);
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=head1 DESCRIPTION
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The OPENSSL_strcasecmp function performs a byte-by-byte comparison of the strings
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B<s1> and B<s2>, ignoring the case of the characters.
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The OPENSSL_strncasecmp function is similar, except that it compares no more than
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B<n> bytes of B<s1> and B<s2>.
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In POSIX-compatible system and on Windows these functions use "C" locale for
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case insensitive. Otherwise the comparison is done in current locale.
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=head1 RETURN VALUES
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Both functions return an integer less than, equal to, or greater than zero if
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s1 is found, respectively, to be less than, to match, or be greater than s2.
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=head1 NOTES
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OpenSSL extensively uses case insensitive comparison of ASCII strings. Though
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OpenSSL itself is locale-agnostic, the applications using OpenSSL libraries may
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unpredictably suffer when they use localization (e.g. Turkish locale is
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well-known with a specific I/i cases). These functions use C locale for string
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comparison.
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=head1 COPYRIGHT
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Copyright 2022 The OpenSSL Project Authors. All Rights Reserved.
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Licensed under the Apache License 2.0 (the "License"). 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 LICENSE in the source distribution or at
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L<https://www.openssl.org/source/license.html>.
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=cut
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