/* $Id$ */
-/* Release $Name$ */
-
/* vfscanf( FILE *, const char *, va_list )
This file is part of the Public Domain C Library (PDCLib).
#include <stdio.h>
#include <stdarg.h>
+#include <ctype.h>
#ifndef REGTEST
int vfscanf( FILE * _PDCLIB_restrict stream, const char * _PDCLIB_restrict format, va_list arg )
{
- /* TODO: Implement using vsscanf() reading from file buffer */
- return 0;
+ /* TODO: This function should interpret format as multibyte characters. */
+ struct _PDCLIB_status_t status;
+ status.base = 0;
+ status.flags = 0;
+ status.n = 0;
+ status.i = 0;
+ status.current = 0;
+ status.s = NULL;
+ status.width = 0;
+ status.prec = 0;
+ status.stream = stream;
+ 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 does not result in matching error */
+ while ( isspace( c = getc( stream ) ) )
+ {
+ ++status.i;
+ }
+ if ( ! feof( stream ) ) /* TODO: Check EOF status directly */
+ {
+ ungetc( c, stream );
+ }
+ }
+ else
+ {
+ /* Non-whitespace char in format string: Match verbatim */
+ if ( ( ( c = getc( stream ) ) != *format ) || feof( stream ) ) /* TODO: Check EOF status directly */
+ {
+ /* Matching error */
+ if ( ! feof( stream ) && ! ferror( stream ) ) /* TODO: Check EOF status directly */
+ {
+ ungetc( c, stream );
+ }
+ else if ( status.n == 0 )
+ {
+ return EOF;
+ }
+ return status.n;
+ }
+ else
+ {
+ ++status.i;
+ }
+ }
+ ++format;
+ }
+ else
+ {
+ /* NULL return code indicates matching error */
+ if ( rc == NULL )
+ {
+ break;
+ }
+ /* Continue parsing after conversion specifier */
+ format = rc;
+ }
+ }
+ va_end( status.arg );
+ return status.n;
}
#endif
#ifdef TEST
#include <_PDCLIB_test.h>
+#include "scan_test.h"
+
+static int SCANFUNC( FILE * stream, char const * format, ... )
+{
+ va_list ap;
+ va_start( ap, format );
+ int result = vfscanf( stream, format, ap );
+ va_end( ap );
+ return result;
+}
+
int main( void )
{
- TESTCASE( NO_TESTDRIVER );
+#include "fscan_sources.incl"
+#include "scanf_testcases.incl"
return TEST_RESULTS;
}
#endif
+