57 lines
1.2 KiB
C
57 lines
1.2 KiB
C
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "plstr.h"
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#include <string.h>
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PR_IMPLEMENT(char *)
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PL_strchr(const char *s, char c)
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{
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if( (const char *)0 == s ) return (char *)0;
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return strchr(s, c);
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}
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PR_IMPLEMENT(char *)
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PL_strrchr(const char *s, char c)
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{
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if( (const char *)0 == s ) return (char *)0;
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return strrchr(s, c);
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}
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PR_IMPLEMENT(char *)
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PL_strnchr(const char *s, char c, PRUint32 n)
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{
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if( (const char *)0 == s ) return (char *)0;
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for( ; n && *s; s++, n-- )
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if( *s == c )
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return (char *)s;
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if( ((char)0 == c) && (n > 0) && ((char)0 == *s) ) return (char *)s;
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return (char *)0;
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}
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PR_IMPLEMENT(char *)
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PL_strnrchr(const char *s, char c, PRUint32 n)
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{
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const char *p;
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if( (const char *)0 == s ) return (char *)0;
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for( p = s; n && *p; p++, n-- )
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;
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if( ((char)0 == c) && (n > 0) && ((char)0 == *p) ) return (char *)p;
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for( p--; p >= s; p-- )
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if( *p == c )
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return (char *)p;
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return (char *)0;
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}
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