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* Added POSIX function strndup(), closing ticket #3309.

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git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@28939 a95241bf-73f2-0310-859d-f6bbb57e9c96
This commit is contained in:
Axel Dörfler 2009-01-18 20:27:12 +00:00
parent 2ea5e5e8e5
commit 18f27bf19f
3 changed files with 33 additions and 1 deletions
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3
headers/posix/string.h
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@ -1,5 +1,5 @@
/*
* Copyright 2004, Haiku Inc. All Rights Reserved.
* Copyright 2004-2009, Haiku Inc. All Rights Reserved.
* Distributed under the terms of the MIT License.
*/
#ifndef _STRING_H_
@ -58,6 +58,7 @@ extern int strncasecmp(const char *string1, const char *string2, size_t length)
extern char *strcasestr(const char *string, const char *searchString);
extern char *strdup(const char *string);
extern char *strndup(const char* string, size_t size);
extern char *stpcpy(char *dest, const char *source);
extern size_t strlcat(char *dest, const char *source, size_t length);

1
src/system/libroot/posix/string/Jamfile
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@ -27,6 +27,7 @@ MergeObject posix_string.o :
strncat.c
strncmp.c
strncpy.c
strndup.cpp
strnlen.c
strpbrk.c
strrchr.c

30
src/system/libroot/posix/string/strndup.cpp Normal file
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@ -0,0 +1,30 @@
/*
* Copyright 2009, Axel Dörfler, axeld@pinc-software.de.
* Distributed under the terms of the MIT License.
*/
#include <string.h>
#include <stdlib.h>
extern "C" char*
strndup(const char* string, size_t size)
{
// While POSIX does not mention it, we handle NULL pointers gracefully
if (string == NULL)
return NULL;
size_t length = strlen(string);
if (length > size)
length = size;
char* copied = (char*)malloc(length + 1);
if (copied == NULL)
return NULL;
memcpy(copied, string, length);
copied[length] = '\0';
return copied;
}