| lh | 9ed821d | 2023-04-07 01:36:19 -0700 | [diff] [blame] | 1 | #include <stdio.h> |
| 2 | #include <sys/types.h> |
| 3 | |
| 4 | |
| 5 | static int |
| 6 | check (FILE *fp, off_t o) |
| 7 | { |
| 8 | int result = 0; |
| 9 | if (feof (fp)) |
| 10 | { |
| 11 | puts ("feof !"); |
| 12 | result = 1; |
| 13 | } |
| 14 | if (ferror (fp)) |
| 15 | { |
| 16 | puts ("ferror !"); |
| 17 | result = 1; |
| 18 | } |
| 19 | if (ftello (fp) != o) |
| 20 | { |
| 21 | printf ("position = %lu, not %lu\n", (unsigned long int) ftello (fp), |
| 22 | (unsigned long int) o); |
| 23 | result = 1; |
| 24 | } |
| 25 | return result; |
| 26 | } |
| 27 | |
| 28 | |
| 29 | static int |
| 30 | do_test (void) |
| 31 | { |
| 32 | FILE *fp = tmpfile (); |
| 33 | if (fp == NULL) |
| 34 | { |
| 35 | puts ("tmpfile failed"); |
| 36 | return 1; |
| 37 | } |
| 38 | if (check (fp, 0) != 0) |
| 39 | return 1; |
| 40 | |
| 41 | puts ("going to write"); |
| 42 | if (fputs ("hello", fp) == EOF) |
| 43 | { |
| 44 | puts ("fputs failed"); |
| 45 | return 1; |
| 46 | } |
| 47 | if (check (fp, 5) != 0) |
| 48 | return 1; |
| 49 | |
| 50 | puts ("going to rewind"); |
| 51 | rewind (fp); |
| 52 | if (check (fp, 0) != 0) |
| 53 | return 1; |
| 54 | |
| 55 | puts ("going to read char"); |
| 56 | int c = fgetc (fp); |
| 57 | if (c != 'h') |
| 58 | { |
| 59 | printf ("read %c, not %c\n", c, 'h'); |
| 60 | return 1; |
| 61 | } |
| 62 | if (check (fp, 1) != 0) |
| 63 | return 1; |
| 64 | |
| 65 | puts ("going to put back"); |
| 66 | if (ungetc (' ', fp) == EOF) |
| 67 | { |
| 68 | puts ("ungetc failed"); |
| 69 | return 1; |
| 70 | } |
| 71 | if (check (fp, 0) != 0) |
| 72 | return 1; |
| 73 | |
| 74 | puts ("going to write again"); |
| 75 | if (fputs ("world", fp) == EOF) |
| 76 | { |
| 77 | puts ("2nd fputs failed"); |
| 78 | return 1; |
| 79 | } |
| 80 | if (check (fp, 5) != 0) |
| 81 | return 1; |
| 82 | |
| 83 | puts ("going to rewind again"); |
| 84 | rewind (fp); |
| 85 | if (check (fp, 0) != 0) |
| 86 | return 1; |
| 87 | |
| 88 | if (fclose (fp) != 0) |
| 89 | { |
| 90 | puts ("fclose failed"); |
| 91 | return 1; |
| 92 | } |
| 93 | |
| 94 | return 0; |
| 95 | } |
| 96 | |
| 97 | #define TEST_FUNCTION do_test () |
| 98 | #include "../test-skeleton.c" |