nsprpub/lib/libc/src/strcpy.c

   1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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  37
  38 #include "plstr.h"
  39 #include <string.h>
  40
  41 PR_IMPLEMENT(char *)
  42 PL_strcpy(char *dest, const char *src)
  43 {
  44     if( ((char *)0 == dest) || ((const char *)0 == src) ) return (char *)0;
  45
  46     return strcpy(dest, src);
  47 }
  48
  49 PR_IMPLEMENT(char *)
  50 PL_strncpy(char *dest, const char *src, PRUint32 max)
  51 {
  52     char *rv;
  53
  54     if( (char *)0 == dest ) return (char *)0;
  55     if( (const char *)0 == src ) return (char *)0;
  56
  57     for( rv = dest; max && ((*dest = *src) != 0); dest++, src++, max-- )
  58         ;
  59
  60 #ifdef JLRU
  61     /* XXX I (wtc) think the -- and ++ operators should be postfix. */
  62     while( --max )
  63         *++dest = '\0';
  64 #endif /* JLRU */
  65
  66     return rv;
  67 }
  68
  69 PR_IMPLEMENT(char *)
  70 PL_strncpyz(char *dest, const char *src, PRUint32 max)
  71 {
  72     char *rv;
  73
  74     if( (char *)0 == dest ) return (char *)0;
  75     if( (const char *)0 == src ) return (char *)0;
  76     if( 0 == max ) return (char *)0;
  77
  78     for( rv = dest, max--; max && ((*dest = *src) != 0); dest++, src++, max-- )
  79         ;
  80
  81     *dest = '\0';
  82
  83     return rv;
  84 }