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Add strlcat(3).

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Jonas 'Sortie' Termansen 2013-07-11 23:13:19 +02:00
parent a1655ca43b
commit f1888f9e8b
3 changed files with 37 additions and 0 deletions
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1
libc/Makefile
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@ -119,6 +119,7 @@ string/strdup.o \
string/strerror_l.o \
string/strerror.o \
string/strerror_r.o \
string/strlcat.o \
string/strlcpy.o \
string/strlen.o \
string/strncasecmp.o \

1
libc/include/string.h
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@ -51,6 +51,7 @@ size_t strcspn(const char*, const char*);
char* strcpy(char* __restrict, const char* __restrict);
char* strdup(const char*);
int strerror_r(int, char*, size_t);
size_t strlcat(char* __restrict, const char* __restrict, size_t);
size_t strlcpy(char* __restrict, const char* __restrict, size_t);
size_t strlen(const char*);
char* strncat(char* __restrict, const char* __restrict, size_t);

35
libc/string/strlcat.cpp Normal file
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@ -0,0 +1,35 @@
/*******************************************************************************
Copyright(C) Jonas 'Sortie' Termansen 2013.
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/strlcat.cpp
Appends a string onto another string truncating if the string is too small.
*******************************************************************************/
#include <string.h>
extern "C"
size_t strlcat(char* restrict dest, const char* restrict src, size_t size)
{
size_t dest_len = strnlen(dest, size);
if ( size <= dest_len )
return dest_len;
strcpy(dest + strlen(dest), src);
return dest_len + strlcpy(dest + dest_len, src, size - dest_len);
}