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#include <stdio.h>
#include <stdlib.h>
#include <errno.h>
#include <string.h>
#include "npfile.h"
int NP_File::openr( const char *fn )
{
if ( is_open )
{
snprintf( error_message, sizeof error_message,
"NP_File: openr():"
"File %s is still open for this object.", filename );
return 1;
}
if ( lock( 1 ))
{
close();
return 2;
}
if (( filename = strdup( fn )) == NULL )
{
perror( "strdup" );
exit( 1 );
}
if (( stream = fopen( fn, "r" )) == NULL )
{
if ( errno == ENOENT )
{
snprintf( error_message, sizeof error_message,
"NP_File: openr(): File %s does not exist", filename );
return 2;
}
else
snprintf( error_message, sizeof error_message,
"NP_File: openr(): fopen() returned error: %s",
strerror( errno ));
return 1;
}
is_writable = 0;
is_readable = 1;
is_open = 1;
return 0;
}
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