Parts read_parts_file(char *infile, int(*process_records)(Parts, FILE *, off_t))
{
FILE *istream;
if ((istream = fopen(infile, "rb")) == NULL) {
print_error(__FILE__, infile);
return NULL;
}
struct stat infile_stat;
if (stat(infile, &infile_stat) != 0) {
print_error(__FILE__, infile);
return NULL;
}
off_t record_size = (off_t)get_part_record_size();
if (infile_stat.st_size % record_size) {
fprintf(stderr, "Corrupt file '%s': size must be multiple of %ld\n",
infile,
(size_t)record_size);
return NULL;
}
Parts db = new_db(infile_stat.st_size / record_size);
if (process_records(db, istream, record_size) !=0) {
print_error(__FILE__, infile);
return NULL;
}
if (fclose(istream) == EOF) {
print_error(__FILE__, infile);
return NULL;
}
return db;
}
int main(int argc, const char *argv[])
{
int rc = parse_options(argc, argv);
switch (rc) {
case 1: /* User asked usage to be printed */
return 0;
case 0:
break;
default:
return rc;
}
do {
int fd = open(*filenames, O_RDONLY);
if (fd < 0) {
rc = EX_NOINPUT;
}
else {
rc = lseek64(fd, record_range[0] * TRACE_RECORD_SIZE, SEEK_SET);
if (rc < 0) {
fprintf(stderr, "Could not seek to record %lu in %s due to %s", record_range[0], *filenames, strerror(errno));
rc = EX_DATAERR;
}
else {
rc = process_records(fd);
}
}
} while((0 == rc) && (*(filenames++) != NULL));
return rc;
}
