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Add strsep(3).

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This commit is contained in:
Jonas 'Sortie' Termansen 2014-07-09 23:44:10 +02:00
parent 7482a13195
commit 58a1383723
3 changed files with 45 additions and 0 deletions
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1
libc/Makefile
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@ -221,6 +221,7 @@ string/strndup.o \
string/strnlen.o \
string/strpbrk.o \
string/strrchr.o \
string/strsep.o \
string/strsignal.o \
string/strspn.o \
string/strstr.o \

1
libc/include/string.h
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@ -132,6 +132,7 @@ char* strchrnul(const char* str, int c);
size_t strlcat(char* __restrict, const char* __restrict, size_t);
size_t strlcpy(char* __restrict, const char* __restrict, size_t);
/* TODO: strncasecmp_l */
char* strsep(char**, const char*);
int strverscmp(const char*, const char*);
int timingsafe_memcmp(const void*, const void*, size_t);
#endif

43
libc/string/strsep.cpp Normal file
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@ -0,0 +1,43 @@
/*******************************************************************************
Copyright(C) Jonas 'Sortie' Termansen 2014.
This file is part of the Sortix C Library.
The Sortix C Library is free software: you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation, either version 3 of the License, or (at your
option) any later version.
The Sortix C Library is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
License for more details.
You should have received a copy of the GNU Lesser General Public License
along with the Sortix C Library. If not, see <http://www.gnu.org/licenses/>.
string/strsep.cpp
Extract a token from a string.
*******************************************************************************/
#include <string.h>
extern "C" char* strsep(char** string_ptr, const char* delim)
{
char* token = *string_ptr;
if ( !token )
return NULL;
size_t token_length = strcspn(token, delim);
if ( token[token_length] )
{
token[token_length++] = '\0';
*string_ptr = token + token_length;
}
else
{
*string_ptr = (char*) NULL;
}
return token;
}