int vfscanf( FILE * _PDCLIB_restrict stream, const char * _PDCLIB_restrict format, va_list arg )
{
- struct _PDCLIB_status_t status;
- status.base = 0;
- status.flags = 0;
- status.n = 0;
- status.i = 0;
- status.this = 0;
- status.s = NULL;
- status.width = 0;
- status.prec = 0;
- status.stream = stream;
+ /* base, flags, n, i, current, s, width, prec, stream, arg */
+ struct _PDCLIB_status_t status = { 0, 0, 0, 0, 0, NULL, 0, 0, stream, NULL };
va_copy( status.arg, arg );
while ( *format != '\0' )
{
const char * rc;
if ( ( *format != '%' ) || ( ( rc = _PDCLIB_scan( format, &status ) ) == format ) )
{
+ int c;
/* No conversion specifier, match verbatim */
if ( isspace( *format ) )
{
/* Whitespace char in format string: Skip all whitespaces */
- /* No whitespaces in input do not result in matching error */
- while ( isspace( *status.s ) )
+ /* No whitespaces in input does not result in matching error */
+ while ( isspace( c = getc( stream ) ) )
{
- ++status.s;
++status.i;
}
+ if ( c != EOF )
+ {
+ ungetc( c, stream );
+ }
}
else
{
/* Non-whitespace char in format string: Match verbatim */
- if ( *status.s != *format )
+ if ( ( c = getc( stream ) ) != *format )
{
/* Matching error */
+ ungetc( c, stream );
return status.n;
}
else
{
- ++status.s;
++status.i;
}
}
}
else
{
+ /* NULL return code indicates matching error */
+ if ( rc == NULL )
+ {
+ break;
+ }
/* Continue parsing after conversion specifier */
format = rc;
}
int main( void )
{
+ /* TODO: Check whitespace / EOF / ungetc handling */
TESTCASE( NO_TESTDRIVER );
return TEST_RESULTS;
}