vfscanf.c

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#include <ctype.h>
#include <stdarg.h>
#include <stdio.h>
 
#include "user/common/file.h"
 
#define _SCAN_GET(ctx) \
    ({ \
        FILE* file = (FILE*)(ctx)->data; \
        fgetc(file); \
    })
 
#define _SCAN_UNGET(ctx, c) \
    ({ \
        FILE* file = (FILE*)(ctx)->data; \
        if ((c) != EOF) \
        { \
            ungetc(c, file); \
        } \
    })
 
#include "common/scan.h"
 
int vfscanf(FILE* _RESTRICT stream, const char* _RESTRICT format, va_list arg)
{
    return _scan(format, arg, (void*)stream);
}