pmt: revert 7f8090b
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@@ -1,191 +0,0 @@
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/* Optimized case-insensitive string comparison in C locale.
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Copyright (C) 2001-2002, 2007, 2009-2024 Free Software Foundation, Inc.
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This file is free software: you can redistribute it and/or modify
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it under the terms of the GNU Lesser General Public License as
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published by the Free Software Foundation; either version 2.1 of the
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License, or (at your option) any later version.
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This file is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with this program. If not, see <https://www.gnu.org/licenses/>. */
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/* Written by Bruno Haible <bruno@clisp.org>. */
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#include "c-strcase.h"
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#include "c-ctype.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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/* STRCASEEQ allows to optimize string comparison with a small literal string.
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STRCASEEQ (s, "UTF-8", 'U','T','F','-','8',0,0,0,0)
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is semantically equivalent to
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c_strcasecmp (s, "UTF-8") == 0
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just faster. */
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/* Help GCC to generate good code for string comparisons with
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immediate strings. */
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#if (defined __GNUC__ || defined __clang__) && defined __OPTIMIZE__
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/* Case insensitive comparison of ASCII characters. */
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# if C_CTYPE_ASCII
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# define CASEEQ(other,upper) \
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(c_isupper (upper) ? ((other) & ~0x20) == (upper) : (other) == (upper))
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# else
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# define CASEEQ(other,upper) \
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(c_toupper (other) == (upper))
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# endif
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static inline int
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strcaseeq9 (const char *s1, const char *s2)
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{
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return c_strcasecmp (s1 + 9, s2 + 9) == 0;
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}
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static inline int
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strcaseeq8 (const char *s1, const char *s2, char s28)
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{
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if (CASEEQ (s1[8], s28))
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{
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if (s28 == 0)
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return 1;
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else
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return strcaseeq9 (s1, s2);
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}
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else
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return 0;
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}
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static inline int
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strcaseeq7 (const char *s1, const char *s2, char s27, char s28)
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{
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if (CASEEQ (s1[7], s27))
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{
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if (s27 == 0)
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return 1;
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else
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return strcaseeq8 (s1, s2, s28);
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}
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else
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return 0;
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}
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static inline int
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strcaseeq6 (const char *s1, const char *s2, char s26, char s27, char s28)
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{
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if (CASEEQ (s1[6], s26))
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{
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if (s26 == 0)
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return 1;
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else
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return strcaseeq7 (s1, s2, s27, s28);
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}
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else
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return 0;
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}
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static inline int
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strcaseeq5 (const char *s1, const char *s2, char s25, char s26, char s27, char s28)
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{
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if (CASEEQ (s1[5], s25))
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{
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if (s25 == 0)
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return 1;
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else
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return strcaseeq6 (s1, s2, s26, s27, s28);
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}
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else
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return 0;
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}
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static inline int
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strcaseeq4 (const char *s1, const char *s2, char s24, char s25, char s26, char s27, char s28)
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{
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if (CASEEQ (s1[4], s24))
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{
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if (s24 == 0)
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return 1;
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else
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return strcaseeq5 (s1, s2, s25, s26, s27, s28);
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}
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else
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return 0;
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}
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static inline int
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strcaseeq3 (const char *s1, const char *s2, char s23, char s24, char s25, char s26, char s27, char s28)
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{
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if (CASEEQ (s1[3], s23))
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{
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if (s23 == 0)
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return 1;
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else
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return strcaseeq4 (s1, s2, s24, s25, s26, s27, s28);
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}
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else
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return 0;
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}
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static inline int
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strcaseeq2 (const char *s1, const char *s2, char s22, char s23, char s24, char s25, char s26, char s27, char s28)
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{
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if (CASEEQ (s1[2], s22))
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{
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if (s22 == 0)
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return 1;
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else
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return strcaseeq3 (s1, s2, s23, s24, s25, s26, s27, s28);
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}
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else
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return 0;
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}
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static inline int
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strcaseeq1 (const char *s1, const char *s2, char s21, char s22, char s23, char s24, char s25, char s26, char s27, char s28)
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{
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if (CASEEQ (s1[1], s21))
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{
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if (s21 == 0)
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return 1;
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else
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return strcaseeq2 (s1, s2, s22, s23, s24, s25, s26, s27, s28);
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}
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else
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return 0;
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}
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static inline int
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strcaseeq0 (const char *s1, const char *s2, char s20, char s21, char s22, char s23, char s24, char s25, char s26, char s27, char s28)
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{
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if (CASEEQ (s1[0], s20))
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{
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if (s20 == 0)
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return 1;
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else
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return strcaseeq1 (s1, s2, s21, s22, s23, s24, s25, s26, s27, s28);
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}
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else
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return 0;
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}
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#define STRCASEEQ(s1,s2,s20,s21,s22,s23,s24,s25,s26,s27,s28) \
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strcaseeq0 (s1, s2, s20, s21, s22, s23, s24, s25, s26, s27, s28)
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#else
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#define STRCASEEQ(s1,s2,s20,s21,s22,s23,s24,s25,s26,s27,s28) \
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(c_strcasecmp (s1, s2) == 0)
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#endif
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#ifdef __cplusplus
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}
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#endif
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