62 lines
1.4 KiB
C
62 lines
1.4 KiB
C
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/***
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*strdup.c - duplicate a string in malloc'd memory
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*
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* Copyright (c) 1985-2001, Microsoft Corporation. All rights reserved.
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*
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*Purpose:
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* defines _strdup() - grab new memory, and duplicate the string into it.
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*
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*Revision History:
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* 05-31-89 JCR C version created.
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* 02-27-90 GJF Fixed calling type, #include <cruntime.h>, fixed
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* copyright.
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* 08-14-90 SBM Removed now redundant #include <stddef.h>
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* 10-02-90 GJF New-style function declarator.
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* 01-18-91 GJF ANSI naming.
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* 09-02-93 GJF Replaced _CALLTYPE1 with __cdecl.
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*
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*******************************************************************************/
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#include <cruntime.h>
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#include <malloc.h>
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#include <string.h>
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/***
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*char *_strdup(string) - duplicate string into malloc'd memory
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*
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*Purpose:
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* Allocates enough storage via malloc() for a copy of the
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* string, copies the string into the new memory, and returns
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* a pointer to it.
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*
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*Entry:
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* char *string - string to copy into new memory
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*
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*Exit:
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* returns a pointer to the newly allocated storage with the
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* string in it.
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*
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* returns NULL if enough memory could not be allocated, or
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* string was NULL.
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*
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*Uses:
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*
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*Exceptions:
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*
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*******************************************************************************/
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char * __cdecl _strdup (
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const char * string
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)
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{
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char *memory;
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if (!string)
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return(NULL);
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if (memory = malloc(strlen(string) + 1))
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return(strcpy(memory,string));
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return(NULL);
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}
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