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Add stpncpy(3).

This commit is contained in:
Jonas 'Sortie' Termansen 2012-11-08 18:37:17 +01:00
parent 7e05129023
commit fd088903dd
3 changed files with 38 additions and 1 deletions
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1
libc/Makefile
View File

@ -95,6 +95,7 @@ sort.o \
sprint.o \
sscanf.o \
stpcpy.o \
stpncpy.o \
strcasecmp.o \
strcat.o \
strchrnul.o \

2
libc/include/string.h
View File

@ -40,6 +40,7 @@ void* memcpy(void* restrict, const void* restrict, size_t);
void* memmove(void*, const void*, size_t);
void* memset(void*, int, size_t);
char* stpcpy(char* restrict, const char* restrict);
char* stpncpy(char* restrict, const char* restrict, size_t);
char* strcat(char* restrict, const char* restrict);
char* strchr(const char*, int);
int strcmp(const char*, const char*);
@ -62,7 +63,6 @@ char* strtok_r(char* restrict, const char* restrict, char** restrict);
/* TODO: These are not implemented in sortix libc yet. */
#if defined(__SORTIX_SHOW_UNIMPLEMENTED)
void* memccpy(void* restrict, const void* restrict, int, size_t);
char* stpncpy(char* restrict, const char* restrict, size_t);
int strcoll_l(const char*, const char*, locale_t);
char* strerror_l(int, locale_t);
int strerror_r(int, char*, size_t);

36
libc/stpncpy.cpp Normal file
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@ -0,0 +1,36 @@
/*******************************************************************************
Copyright(C) Jonas 'Sortie' Termansen 2011, 2012.
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/>.
stpncpy.cpp
Copies a string into a fixed size buffer and returns last byte.
*******************************************************************************/
#include <string.h>
extern "C" char* stpncpy(char* dest, const char* src, size_t n)
{
size_t i;
for ( i = 0; i < n && src[i] != '\0'; i++ )
dest[i] = src[i];
char* ret = dest + i;
for ( ; i < n; i++ )
dest[i] = '\0';
return ret;
}