diff options
Diffstat (limited to 'test/h5test.c')
| -rw-r--r-- | test/h5test.c | 148 |
1 files changed, 148 insertions, 0 deletions
diff --git a/test/h5test.c b/test/h5test.c index 5e6f01a..6307078 100644 --- a/test/h5test.c +++ b/test/h5test.c @@ -1889,6 +1889,84 @@ h5_get_version_string(H5F_libver_t libver) } /* end of h5_get_version_string */ /*------------------------------------------------------------------------- + * Function: h5_compare_file_bytes() + * + * Purpose: Helper function to compare two files byte-for-byte. + * + * Return: Success: 0, if files are identical + * Failure: -1, if files differ + * + * Programmer: Binh-Minh Ribler + * October, 2018 + *------------------------------------------------------------------------- + */ +int +h5_compare_file_bytes(char *f1name, char *f2name) +{ + FILE *f1ptr = NULL; /* two file pointers */ + FILE *f2ptr = NULL; + off_t f1size = 0; /* size of the files */ + off_t f2size = 0; + char f1char = 0; /* one char from each file */ + char f2char = 0; + off_t ii = 0; + int ret_value = 0; /* for error handling */ + + /* Open files for reading */ + f1ptr = HDfopen(f1name, "rb"); + if (f1ptr == NULL) { + HDfprintf(stderr, "Unable to fopen() %s\n", f1name); + ret_value = -1; + goto done; + } + f2ptr = HDfopen(f2name, "rb"); + if (f2ptr == NULL) { + HDfprintf(stderr, "Unable to fopen() %s\n", f2name); + ret_value = -1; + goto done; + } + + /* Get the file sizes and verify that they equal */ + HDfseek(f1ptr , 0 , SEEK_END); + f1size = HDftell(f1ptr); + + HDfseek(f2ptr , 0 , SEEK_END); + f2size = HDftell(f2ptr); + + if (f1size != f2size) { + HDfprintf(stderr, "Files differ in size, %llu vs. %llu\n", f1size, f2size); + ret_value = -1; + goto done; + } + + /* Compare each byte and fail if a difference is found */ + HDrewind(f1ptr); + HDrewind(f2ptr); + for (ii = 0; ii < f1size; ii++) { + if(HDfread(&f1char, 1, 1, f1ptr) != 1) { + ret_value = -1; + goto done; + } + if(HDfread(&f2char, 1, 1, f2ptr) != 1) { + ret_value = -1; + goto done; + } + if (f1char != f2char) { + HDfprintf(stderr, "Mismatch @ 0x%llX: 0x%X != 0x%X\n", ii, f1char, f2char); + ret_value = -1; + goto done; + } + } + +done: + if (f1ptr) + HDfclose(f1ptr); + if (f2ptr) + HDfclose(f2ptr); + return ret_value; +} /* end h5_compare_file_bytes() */ + +/*------------------------------------------------------------------------- * Function: H5_get_srcdir_filename * * Purpose: Append the test file name to the srcdir path and return the whole string @@ -1942,6 +2020,76 @@ const char *H5_get_srcdir(void) } /* end H5_get_srcdir() */ /*------------------------------------------------------------------------- + * Function: h5_duplicate_file_by_bytes + * + * Purpose: Duplicate a file byte-for-byte at filename/path 'orig' + * to a new (or replaced) file at 'dest'. + * + * Return: Success: 0, completed successfully + * Failure: -1 + * + * Programmer: Jake Smith + * 24 June 2020 + * + *------------------------------------------------------------------------- + */ +int +h5_duplicate_file_by_bytes(const char *orig, const char *dest) +{ + FILE *orig_ptr = NULL; + FILE *dest_ptr = NULL; + hsize_t fsize = 0; + hsize_t read_size = 0; + hsize_t max_buf = 0; + void *dup_buf = NULL; + int ret_value = 0; + + max_buf = 4096 * sizeof(char); + + orig_ptr = HDfopen(orig, "rb"); + if (NULL == orig_ptr) { + ret_value = -1; + goto done; + } + + HDfseek(orig_ptr , 0 , SEEK_END); + fsize = (hsize_t)HDftell(orig_ptr); + HDrewind(orig_ptr); + + dest_ptr = HDfopen(dest, "wb"); + if (NULL == dest_ptr) { + ret_value = -1; + goto done; + } + + read_size = MIN(fsize, max_buf); + dup_buf = HDmalloc(read_size); + if (NULL == dup_buf) { + ret_value = -1; + goto done; + } + + while (read_size > 0) { + if (HDfread(dup_buf, read_size, 1, orig_ptr) != 1) { + ret_value = -1; + goto done; + } + HDfwrite(dup_buf, read_size, 1, dest_ptr); + fsize -= read_size; + read_size = MIN(fsize, max_buf); + } + +done: + if (orig_ptr != NULL) + HDfclose(orig_ptr); + if (dest_ptr != NULL) + HDfclose(dest_ptr); + if (dup_buf != NULL) + HDfree(dup_buf); + return ret_value; +} /* end h5_duplicate_file_by_bytes() */ + +/*------------------------------------------------------------------------- * Function: h5_check_if_file_locking_enabled * * Purpose: Checks if file locking is enabled on this file system. |