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/*************************************************
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* Perl-Compatible Regular Expressions *
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*************************************************/
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/* PCRE is a library of functions to support regular expressions whose syntax
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and semantics are as close as possible to those of the Perl 5 language.
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Written by Philip Hazel
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Copyright (c) 1997-2012 University of Cambridge
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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 are met:
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* Redistributions of source code must retain the above copyright notice,
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this list of conditions and the following disclaimer.
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* 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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* Neither the name of the University of Cambridge nor the names of its
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contributors may be used to endorse or promote products derived from
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this software without specific prior written permission.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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AND 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 COPYRIGHT OWNER OR CONTRIBUTORS BE
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LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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POSSIBILITY OF SUCH DAMAGE.
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-----------------------------------------------------------------------------
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*/
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/* This module contains an internal function that is used to match an extended
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class. It is used by both pcre_exec() and pcre_def_exec(). */
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#include "config.h"
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#include "pcre_internal.h"
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#ifndef COMPILE_PCRE8
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/*************************************************
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* Compare string utilities *
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*************************************************/
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/* The following two functions compares two strings. Basically an strcmp
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for non 8 bit characters.
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Arguments:
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str1 first string
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str2 second string
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Returns: 0 if both string are equal (like strcmp), 1 otherwise
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*/
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int
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PRIV(strcmp_uc_uc)(const pcre_uchar *str1, const pcre_uchar *str2)
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{
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pcre_uchar c1;
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pcre_uchar c2;
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while (*str1 != '\0' || *str2 != '\0')
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{
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c1 = *str1++;
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c2 = *str2++;
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if (c1 != c2)
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return ((c1 > c2) << 1) - 1;
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}
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/* Both length and characters must be equal. */
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return 0;
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}
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int
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PRIV(strcmp_uc_c8)(const pcre_uchar *str1, const char *str2)
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{
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const pcre_uint8 *ustr2 = (pcre_uint8 *)str2;
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pcre_uchar c1;
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pcre_uchar c2;
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while (*str1 != '\0' || *ustr2 != '\0')
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{
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c1 = *str1++;
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c2 = (pcre_uchar)*ustr2++;
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if (c1 != c2)
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return ((c1 > c2) << 1) - 1;
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}
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/* Both length and characters must be equal. */
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return 0;
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}
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/* The following two functions compares two, fixed length
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strings. Basically an strncmp for non 8 bit characters.
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Arguments:
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str1 first string
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str2 second string
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num size of the string
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Returns: 0 if both string are equal (like strcmp), 1 otherwise
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*/
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int
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PRIV(strncmp_uc_uc)(const pcre_uchar *str1, const pcre_uchar *str2, unsigned int num)
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{
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pcre_uchar c1;
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pcre_uchar c2;
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while (num-- > 0)
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{
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c1 = *str1++;
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c2 = *str2++;
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if (c1 != c2)
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return ((c1 > c2) << 1) - 1;
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}
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/* Both length and characters must be equal. */
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return 0;
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}
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int
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PRIV(strncmp_uc_c8)(const pcre_uchar *str1, const char *str2, unsigned int num)
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{
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const pcre_uint8 *ustr2 = (pcre_uint8 *)str2;
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pcre_uchar c1;
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pcre_uchar c2;
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while (num-- > 0)
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{
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c1 = *str1++;
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c2 = (pcre_uchar)*ustr2++;
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if (c1 != c2)
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return ((c1 > c2) << 1) - 1;
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}
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/* Both length and characters must be equal. */
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return 0;
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}
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/* The following function returns with the length of
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a zero terminated string. Basically an strlen for non 8 bit characters.
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Arguments:
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str string
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Returns: length of the string
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*/
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unsigned int
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PRIV(strlen_uc)(const pcre_uchar *str)
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{
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unsigned int len = 0;
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while (*str++ != 0)
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len++;
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return len;
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}
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#endif /* COMPILE_PCRE8 */
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/* End of pcre_string_utils.c */
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