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#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include "npstringarray.h"
const char *NP_Stringarray::operator[]( int position )
{
if ( mutex )
return NULL;
mutex = 1;
if ( position >= total || position < 0 )
{
snprintf( error_message, sizeof error_message, "NP_Stringarray: "
"operator[](): argument %d out of range.", position );
mutex = 0;
return NULL;
}
mutex = 0;
return ( const char *)item_list[ position ];
}
int NP_Stringarray::operator[]( const char *item )
{
if ( mutex )
return 3;
mutex = 1;
if ( !total )
{
strcpy( error_message, "NP_Stringarray: operator[](): this object is "
"empty." );
mutex = 0;
return -1;
}
if ( item == NULL )
{
strcpy( error_message, "NP_Stringarray: operator[](): NULL item pointer"
" passed as argument." );
mutex = 0;
return -1;
}
int i;
char **pointer = item_list;
for( i = 0; i < total; ++i )
if ( !strcmp( item, *pointer++ ))
break;
if ( i == total )
{
snprintf( error_message, sizeof error_message,
"NP_Stringarray: operator[](): no such item "
"has been added to this object: %s.", item );
mutex = 0;
return -2;
}
mutex = 0;
return i;
}
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