/*
* Parse a V 2.0 USN record.
* Returns 0 on success, 1 otherwise
*/
static uint8_t
parse_v2_record(const unsigned char *buf, TSK_USN_RECORD_HEADER *header,
TSK_USN_RECORD_V2 *record, TSK_ENDIAN_ENUM endian)
{
uint64_t timestamp = 0;
uint16_t name_offset = 0, name_length = 0;
record->refnum = tsk_getu48(endian, &buf[8]);
record->refnum_seq = tsk_getu16(endian, &buf[14]);
record->parent_refnum = tsk_getu48(endian, &buf[16]);
record->parent_refnum_seq = tsk_getu16(endian, &buf[22]);
record->usn = tsk_getu64(endian, &buf[24]);
/* Convert NT timestamp into Unix */
timestamp = tsk_getu64(endian, &buf[32]);
record->time_sec = nt2unixtime(timestamp);
record->time_nsec = nt2nano(timestamp);
record->reason = tsk_getu32(endian, &buf[40]);
record->source_info = tsk_getu32(endian, &buf[44]);
record->security = tsk_getu32(endian, &buf[48]);
record->attributes = tsk_getu32(endian, &buf[52]);
/* Extract file name */
name_length = tsk_getu16(endian, &buf[56]);
name_offset = tsk_getu16(endian, &buf[58]);
return parse_fname(&buf[name_offset], name_length, record, endian);
}
SEQ* seq_open_type(const char *fname, int type)
{
SEQ *s = ckallocz(sizeof(SEQ));
int r, flags = 0;
r = parse_fname(fname,
&(s->fname), &(s->from), &(s->slen), &(s->maskname));
if (r == -1)
fatalf("improper positions specification: %s", fname);
s->type = type;
s->flags = check_flags(r|flags);
s->fp = ckopen(s->fname, "rb");
s->count = 0;
s->offset = 0;
return s;
}
/**
* Reads a file based on the given filename
* into a File. Prints error if file not found.
*
* @param *path Path to the file
* @param *fname Name of the file to read
* @return File* or NULL if file not found.
*/
static /*@null@*/ File *read_file(char *path, char *fname) {
char file_path[MAX_PATH_LENGTH];
FILE *fp = NULL;
long int filesize;
File *file;
/*hack! trim newline;*/
fname[strlen(fname)-1] = '\0';
strcpy(file_path, path);
strcat(file_path, fname);
fp = fopen(file_path, "rt");
if (fp == NULL) {
fprintf(stderr, "Failed to read file: '%s', file skipped.\n", fname);
return NULL;
}
/*get file length*/
(void)fseek(fp, 0, SEEK_END);
filesize = ftell(fp);
/*create file*/
file = (File *)smalloc(sizeof(File));
file->content = (char *)smalloc((size_t)filesize+1 * sizeof(char));
if (filesize > 0) {
rewind(fp);
(void)fread(file->content, (size_t)filesize, 1, fp);
}
file->content[filesize] = '\0';
parse_fname(file, fname);
(void)fclose(fp);
return file;
}
int main(int argc, char **argv) {
debug_print("%s (DEBUG)\n", VERSION);
if (argc == 1) {
say_usage();
exit(EXIT_SUCCESS);
}
// Input file names (mock and ChIP).
char *mock_fnames[MAXNARGS+1] = {0};
char *ChIP_fnames[MAXNARGS+1] = {0};
int n_mock_files = 0;
int n_ChIP_files = 0;
int no_mock_specified = 1;
int no_ChIP_specified = 1;
static int list_flag = 0;
static int minmapq = 20;
static int window = 300;
static int mock_flag = 1;
static double minconf = 0.0;
// Needed to check 'strtoul()'.
char *endptr;
// Parse options.
debug_print("%s", "arguments:'\n");
while(1) {
int option_index = 0;
static struct option long_options[] = {
{"chip", required_argument, 0, '1'},
{"confidence", required_argument, 0, 'c'},
{"help", no_argument, 0, 'h'},
{"list-output", no_argument, &list_flag, 1 },
{"mock", required_argument, 0, '0'},
{"no-mock", no_argument, &mock_flag, 0 },
{"quality", required_argument, 0, 'q'},
{"version", no_argument, 0, 'v'},
{"window", required_argument, 0, 'w'},
{0, 0, 0, 0}
};
int c = getopt_long(argc, argv, "0:1:c:hlq:vw:",
long_options, &option_index);
// Done parsing named options. //
if (c == -1) break;
switch (c) {
case 0:
break;
case '0':
debug_print("| mock files(s): %s\n", optarg);
parse_fname(mock_fnames, optarg, &n_mock_files);
no_mock_specified = 0;
break;
case '1':
debug_print("| ChIP files(s): %s\n", optarg);
parse_fname(ChIP_fnames, optarg, &n_ChIP_files);
no_ChIP_specified = 0;
break;
case 'h':
say_usage();
return EXIT_SUCCESS;
case 'l':
list_flag = 1;
break;
case 'c':
// Decode argument with 'strtod()'
errno = 0;
endptr = NULL;
minconf = strtod(optarg, &endptr);
if (!check_strtoX(optarg, endptr) || minconf < 0 || minconf > 1) {
fprintf(stderr,
"zerone error: confidence must be "
"a float between 0 and 1\n");
say_usage();
return EXIT_FAILURE;
}
debug_print("| minconf: %f\n", minconf);
break;
case 'q':
// Decode argument with 'strtoul()'
errno = 0;
endptr = NULL;
minmapq = strtoul(optarg, &endptr, 10);
if (!check_strtoX(optarg, endptr) ||
minmapq < 0 || minmapq > 254) {
fprintf(stderr,
"zerone error: minimum mapping quality must be "
"an integer between 0 and 254\n");
say_usage();
return EXIT_FAILURE;
}
debug_print("| minmapq: %d\n", minmapq);
break;
case 'v':
say_version();
return EXIT_SUCCESS;
case 'w':
window = atoi(optarg);
if (window <= 0) {
fprintf(stderr, "zerone error: window must be a "
"positive integer\n");
say_usage();
return EXIT_FAILURE;
}
debug_print("| window: %d\n", window);
break;
default:
// Cannot parse. //
say_usage();
return EXIT_FAILURE;
}
}
// Now parse positional arguments (file names).
while (optind < argc) {
parse_fname(ChIP_fnames, argv[optind++], &n_ChIP_files);
}
debug_print("%s", "done parsing arguments\n");
// Check options.
if (no_mock_specified && mock_flag) {
fprintf(stderr,
"zerone error: specify a file for mock control experiment\n");
say_usage();
return EXIT_FAILURE;
}
if (no_ChIP_specified) {
fprintf(stderr,
"zerone error: specify a file for ChIP-seq experiment\n");
say_usage();
return EXIT_FAILURE;
}
// Process input files.
zerone_parser_args_t args;
args.window = window;
args.minmapq = minmapq;
ChIP_t *ChIP = parse_input_files(mock_fnames, ChIP_fnames, args);
if (ChIP == NULL) {
fprintf(stderr, "error while reading input\n");
exit(EXIT_FAILURE);
}
// debug info //
{
debug_print("%s", "done reading input files\n");
debug_print("%s", "ChIP:\n");
debug_print("| r = %ld (dimension)\n", ChIP->r);
debug_print("| nb = %d (block number)\n", ChIP->nb);
for (int j = 0 ; j < ChIP->nb ; j++) {
debug_print("| block %s (size: %d)\n",
ChIP->nm + 32*j, ChIP->sz[j]);
}
// Sum reads of all blocks.
size_t *nreads = calloc(ChIP->r, sizeof(size_t));
if (nreads == NULL) {
fprintf(stderr, "memory error\n");
exit(EXIT_FAILURE);
}
for (int i = 0 ; i < nobs(ChIP) ; i++) {
for (int j = 0 ; j < ChIP->r ; j++) {
nreads[j] += ChIP->y[j + i*ChIP->r];
}
}
debug_print("| aggregated mock: %ld reads\n", nreads[0]);
for (int j = 0 ; j < ChIP->r-1 ; j++) {
debug_print("| %s: %ld reads\n", ChIP_fnames[j], nreads[j+1]);
}
free(nreads);
}
// Do zerone.
debug_print("%s", "starting zerone\n");
zerone_t *Z = do_zerone(ChIP);
if (Z == NULL) {
fprintf(stderr, "run time error (sorry)\n");
exit(EXIT_FAILURE);
}
// debug info //
{
debug_print("%s", "Q:\n");
debug_print("%.3f %.3f %.3f\n", Z->Q[0], Z->Q[3], Z->Q[6]);
debug_print("%.3f %.3f %.3f\n", Z->Q[1], Z->Q[4], Z->Q[7]);
debug_print("%.3f %.3f %.3f\n", Z->Q[2], Z->Q[5], Z->Q[8]);
debug_print("%s", "p:\n");
for (int j = 0 ; j < 3 ; j++) {
int off = 0;
char debuf[512];
for (int i = 0 ; i < Z->r+1 ; i++) {
off += sprintf(debuf + off, "%.3f ", Z->p[i+j*(Z->r+1)]);
if (off > 499) break;
}
debug_print("%s\n", debuf);
}
}
// Quality control.
double feat[5];
double QC = zerone_qc(Z, feat);
fprintf(stdout, "# QC score: %.3f\n", QC);
fprintf(stdout, "# features: %.3f, %.3f, %.3f, %.3f, %.3f\n",
feat[0], feat[1], feat[2], feat[3], feat[4]);
fprintf(stdout, "# advice: %s discretization.\n",
QC >= 0 ? "accept" : "reject");
// List output.
if (list_flag) {
int wid = 0;
int target = 0;
double best = 0.0;
for (int i = 0 ; i < ChIP->nb ; i++) {
char *name = ChIP->nm + 32*i;
// Do not print the last bin because it may extend
// beyond the limit of the chromosome.
for (int j = 0 ; j < ChIP->sz[i]-1 ; j++) {
// Toggle on target state.
double conf = Z->phi[2+wid*3];
if (!target && Z->path[wid] == 2 && conf > minconf) {
fprintf(stdout, "%s\t%d\t", name, window*j + 1);
best = conf;
target = 1;
}
// Toggle off target state.
else if (target) {
// Update best score.
if (conf > best) best = conf;
if (Z->path[wid] != 2 || conf < minconf) {
fprintf(stdout, "%d\t%.5f\n", window*(j+1), best);
best = 0.0;
target = 0;
}
}
wid++;
}
// In case the end of the block is a target.
if (target) {
fprintf(stdout, "%d\t%.5f\n", window * ChIP->sz[i], best);
best = 0.0;
target = 0;
}
}
}
// Table output.
else {
// Use 'offset' to navigate in the ChIP blocks.
uint64_t offset = 0;
// In case no mock was provided, skip the column.
const int skipmock = mock_flag ? 0 : 1;
for (int i = 0 ; i < ChIP->nb ; i++) {
char *name = ChIP->nm + 32*i;
// Do not print the last bin because it may extend
// beyond the limit of the chromosome.
for (int j = 0 ; j < ChIP->sz[i]-1 ; j++) {
// Skip if 'confidence' too low.
if (Z->phi[2+(offset+j)*3] < minconf) continue;
fprintf(stdout, "%s\t%d\t%d\t%d", name, window*j + 1,
// Block name, window start, end, state.
window*(j+1), Z->path[offset+j] == 2 ? 1 : 0);
for (int k = skipmock ; k < Z->ChIP->r ; k++) {
fprintf(stdout, "\t%d",
// Read numbers of each file.
Z->ChIP->y[(offset+j)*Z->ChIP->r+k]);
}
fprintf(stdout, "\t%.5f\n",
// Confidence score.
Z->phi[2+(offset+j)*3]);
}
// End of the block. Update 'offset' before
// local window number is reset to 0.
offset += Z->ChIP->sz[i];
}
}
destroy_zerone_all(Z); // Also frees ChIP.
for (int i = 0 ; i < MAXNARGS ; i++) {
free(mock_fnames[i]);
free(ChIP_fnames[i]);
}
return 0;
}
