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Public API functions OPENSSL_str[n]casecmp
Reviewed-by: Tim Hudson <tjh@openssl.org> Reviewed-by: Tomas Mraz <tomas@openssl.org> (Merged from openssl#18069)
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=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); | ||
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 | ||
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 | ||
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 | ||
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 | ||
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 | ||
OpenSSL itself is locale-agnostic, the applications using OpenSSL libraries may | ||
unpredictably suffer when they use localization (e.g. Turkish locale is | ||
well-known with a specific I/i cases). These functions use C locale for string | ||
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 | ||
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>. | ||
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=cut |
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