| 0,0 → 1,44 |
|---|
| #include "format_scan.h" |
| #include <string.h> |
| |
| char *__scanf_buffer=NULL; |
| |
| static int __virtual_getc_con(void *sp, const void *obj) |
| // get next chat from string obj, save point is ptr to string char ptr |
| { |
| int ch; |
| const char**spc= (const char**)sp; |
| if (!spc) return EOF; // error |
| if (!*spc) *spc = __scanf_buffer; // first call, init savepoint |
| |
| while (!**spc) // need to read more |
| { |
| if(!gets(__scanf_buffer)) return EOF; |
| *spc = __scanf_buffer; |
| strcat(__scanf_buffer,"\n"); // imitate delimiter |
| } |
| if (**spc == 26 || **spc == 3) // ^C ^Z end of scan, clear buffer |
| { |
| *spc = __scanf_buffer; |
| *__scanf_buffer = 0; |
| return EOF; // ^C ^Z |
| } |
| |
| ch = **spc; (*spc)++ ; |
| return ch; |
| } |
| |
| static void __virtual_ungetc_con(void *sp, int c, const void *obj) |
| // if can, one step back savepoint in s |
| { |
| const char**spc= (const char**)sp; |
| |
| if (spc && *spc > __scanf_buffer) (*spc)--; |
| //printf("Ungetc '%c'[%d];", c, c); |
| } |
| |
| |
| int vscanf(const char * format, va_list arg) |
| { |
| return _format_scan(NULL, format, arg, &__virtual_getc_con, &__virtual_ungetc_con); |
| } |