Rev 6433 | Go to most recent revision | Show entire file | Regard whitespace | Details | Blame | Last modification | View Log | RSS feed
| Rev 6433 | Rev 7184 | ||
|---|---|---|---|
| Line 1... | Line 1... | ||
| 1 | #include |
1 | #include |
| 2 | // non standard realization - no support for virtually change char |
2 | // non standard realization - support for virtually change ONLY ONE char |
| - | 3 | ||
| - | 4 | ||
| - | 5 | ||
| 3 | int ungetc(int c,FILE* file) |
6 | int ungetc(int c,FILE* file) |
| 4 | { |
7 | { |
| 5 | dword res; |
8 | dword res; |
| Line 6... | Line 9... | ||
| 6 | 9 | ||
| 7 | if(!file) |
10 | if(!file) |
| 8 | { |
11 | { |
| 9 | errno = E_INVALIDPTR; |
12 | errno = E_INVALIDPTR; |
| 10 | return EOF; |
13 | return EOF; |
| Line 11... | Line 14... | ||
| 11 | } |
14 | } |
| 12 | 15 | ||
| 13 | if ((file->mode & 3!=FILE_OPEN_READ) && (file->mode & FILE_OPEN_PLUS==0)) |
16 | if ((file->mode & 3) != FILE_OPEN_READ && (file->mode & FILE_OPEN_PLUS) == 0) |
| 14 | { |
17 | { |
| 15 | errno = E_ACCESS; |
18 | errno = E_ACCESS; |
| Line 16... | Line 19... | ||
| 16 | return EOF; |
19 | return EOF; |
| 17 | } |
20 | } |
| 18 | 21 | ||
| 19 | if (file->filepos>file->filesize || file->filepos==0) |
22 | if (file->filepos > file->filesize || file->filepos == 0 || c == EOF || file->ungetc_buf != EOF) |
| 20 | { |
23 | { |
| - | 24 | errno = E_EOF; |
|
| - | 25 | return EOF; |
|
| 21 | errno = E_EOF; |
26 | } |
| Line 22... | Line 27... | ||
| 22 | return EOF; |
27 | |
| 23 | } |
28 | file->ungetc_buf = c; |