| 1,11 → 1,40 |
|---|
| #include <stdio.h> |
| #include <stdarg.h> |
| #include <stdlib.h> |
| |
| int virtual_getc_file(void *sp, const void *obj) |
| // get next chat from file obj, save point is ptr to string char ptr |
| { |
| FILE *f = (FILE *)obj; |
| int ch = fgetc(f); |
| |
| //printf("getc '%c'[%d];", ch, ch); |
| |
| return ch; |
| } |
| |
| void virtual_ungetc_file(void *sp, int c, const void *obj) |
| // if can, one step back savepoint in s |
| { |
| FILE *f = (FILE *)obj; |
| |
| if (f) ungetc(c, f); |
| } |
| |
| |
| int vfscanf ( FILE * stream, const char * format, va_list arg ) |
| { |
| return format_scan(stream, format, arg, &virtual_getc_file, &virtual_ungetc_file); |
| }; |
| |
| int fscanf(FILE* stream, const char* format, ...) |
| { |
| va_list arg; |
| int n; |
| va_start(arg, format); |
| |
| n = vfscanf(stream, format, arg); |
| |
| va_end(arg); |
| return n; |
| } |