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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 4973 | right-hear | 1 | /* Copyright (C) 1995 DJ Delorie, see COPYING.DJ for details */ |
| 2 | #include |
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| 3 | #include |
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| 4 | #include |
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| 5 | #include |
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| 6 | #include |
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| 7 | #include |
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| 8 | #include |
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| 9 | |||
| 10 | FILE * |
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| 11 | freopen(const char *file, const char *mode, FILE *f) |
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| 12 | { |
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| 13 | int fd, rw, oflags=0; |
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| 14 | char tbchar; |
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| 15 | |||
| 16 | if (file == 0 || mode == 0 || f == 0) |
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| 17 | return 0; |
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| 18 | |||
| 19 | rw = (mode[1] == '+'); |
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| 20 | |||
| 21 | fclose(f); |
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| 22 | |||
| 23 | switch (*mode) { |
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| 24 | case 'a': |
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| 25 | oflags = O_CREAT | (rw ? O_RDWR : O_WRONLY); |
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| 26 | break; |
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| 27 | case 'r': |
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| 28 | oflags = rw ? O_RDWR : O_RDONLY; |
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| 29 | break; |
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| 30 | case 'w': |
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| 31 | oflags = O_TRUNC | O_CREAT | (rw ? O_RDWR : O_WRONLY); |
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| 32 | break; |
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| 33 | default: |
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| 34 | return NULL; |
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| 35 | } |
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| 36 | if (mode[1] == '+') |
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| 37 | tbchar = mode[2]; |
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| 38 | else |
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| 39 | tbchar = mode[1]; |
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| 40 | if (tbchar == 't') |
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| 41 | oflags |= O_TEXT; |
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| 42 | else if (tbchar == 'b') |
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| 43 | oflags |= O_BINARY; |
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| 44 | else |
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| 45 | oflags |= (_fmode & (O_TEXT|O_BINARY)); |
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| 46 | |||
| 47 | fd = open(file, oflags, 0666); |
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| 48 | if (fd < 0) |
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| 49 | return NULL; |
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| 50 | |||
| 51 | if (*mode == 'a') |
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| 52 | lseek(fd, 0, SEEK_END); |
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| 53 | |||
| 54 | f->_cnt = 0; |
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| 55 | f->_file = fd; |
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| 56 | f->_bufsiz = 0; |
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| 57 | if (rw) |
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| 58 | f->_flag = _IORW; |
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| 59 | else if (*mode == 'r') |
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| 60 | f->_flag = _IOREAD; |
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| 61 | else |
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| 62 | f->_flag = _IOWRT; |
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| 63 | |||
| 64 | f->_base = f->_ptr = NULL; |
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| 65 | return f; |
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| 66 | } |