+#include <string.h>
+#include <math.h>
#include "bcf.h"
#include "kstring.h"
#include "khash.h"
KHASH_MAP_INIT_STR(str2id, int)
+#ifdef _WIN32
+#define srand48(x) srand(x)
+#define drand48() ((double)rand() / RAND_MAX)
+#endif
+
+// FIXME: valgrind report a memory leak in this function. Probably it does not get deallocated...
void *bcf_build_refhash(bcf_hdr_t *h)
{
khash_t(str2id) *hash;
if (hash) kh_destroy(str2id, hash); // Note that strings are not freed.
}
+void bcf_str2id_thorough_destroy(void *_hash)
+{
+ khash_t(str2id) *hash = (khash_t(str2id)*)_hash;
+ khint_t k;
+ if (hash == 0) return;
+ for (k = 0; k < kh_end(hash); ++k)
+ if (kh_exist(hash, k)) free((char*)kh_key(hash, k));
+ kh_destroy(str2id, hash);
+}
+
int bcf_str2id(void *_hash, const char *str)
{
khash_t(str2id) *hash = (khash_t(str2id)*)_hash;
int bcf_shrink_alt(bcf1_t *b, int n)
{
char *p;
- int i, j, k, *z, n_smpl = b->n_smpl;
+ int i, j, k, n_smpl = b->n_smpl;
if (b->n_alleles <= n) return -1;
+ // update ALT
if (n > 1) {
for (p = b->alt, k = 1; *p; ++p)
if (*p == ',' && ++k == n) break;
++p;
memmove(p, b->flt, b->str + b->l_str - b->flt);
b->l_str -= b->flt - p;
- z = alloca(sizeof(int) / 2 * n * (n+1));
- for (i = k = 0; i < n; ++i)
- for (j = 0; j < n - i; ++j)
- z[k++] = i * b->n_alleles + j;
+ // update PL
for (i = 0; i < b->n_gi; ++i) {
bcf_ginfo_t *g = b->gi + i;
if (g->fmt == bcf_str2int("PL", 2)) {
g->len = n * (n + 1) / 2;
for (l = k = 0; l < n_smpl; ++l) {
uint8_t *dl = d + l * x;
- for (j = 0; j < g->len; ++j) d[k++] = dl[z[j]];
+ for (j = 0; j < g->len; ++j) d[k++] = dl[j];
}
} // FIXME: to add GL
}
}
return 0;
}
+/* FIXME: this function will fail given AB:GTX:GT. BCFtools never
+ * produces such FMT, but others may do. */
+int bcf_fix_gt(bcf1_t *b)
+{
+ char *s;
+ int i;
+ uint32_t tmp;
+ bcf_ginfo_t gt;
+ // check the presence of the GT FMT
+ if ((s = strstr(b->fmt, ":GT")) == 0) return 0; // no GT or GT is already the first
+ if (s[3] != '\0' && s[3] != ':') return 0; // :GTX in fact
+ tmp = bcf_str2int("GT", 2);
+ for (i = 0; i < b->n_gi; ++i)
+ if (b->gi[i].fmt == tmp) break;
+ if (i == b->n_gi) return 0; // no GT in b->gi; probably a bug...
+ gt = b->gi[i];
+ // move GT to the first
+ for (; i > 0; --i) b->gi[i] = b->gi[i-1];
+ b->gi[0] = gt;
+ memmove(b->fmt + 3, b->fmt, s + 1 - b->fmt);
+ b->fmt[0] = 'G'; b->fmt[1] = 'T'; b->fmt[2] = ':';
+ return 0;
+}
+
+int bcf_fix_pl(bcf1_t *b)
+{
+ int i;
+ uint32_t tmp;
+ uint8_t *PL, *swap;
+ bcf_ginfo_t *gi;
+ // pinpoint PL
+ tmp = bcf_str2int("PL", 2);
+ for (i = 0; i < b->n_gi; ++i)
+ if (b->gi[i].fmt == tmp) break;
+ if (i == b->n_gi) return 0;
+ // prepare
+ gi = b->gi + i;
+ PL = (uint8_t*)gi->data;
+ swap = alloca(gi->len);
+ // loop through individuals
+ for (i = 0; i < b->n_smpl; ++i) {
+ int k, l, x;
+ uint8_t *PLi = PL + i * gi->len;
+ memcpy(swap, PLi, gi->len);
+ for (k = x = 0; k < b->n_alleles; ++k)
+ for (l = k; l < b->n_alleles; ++l)
+ PLi[l*(l+1)/2 + k] = swap[x++];
+ }
+ return 0;
+}
+
+int bcf_smpl_covered(const bcf1_t *b)
+{
+ int i, j, n = 0;
+ uint32_t tmp;
+ bcf_ginfo_t *gi;
+ // pinpoint PL
+ tmp = bcf_str2int("PL", 2);
+ for (i = 0; i < b->n_gi; ++i)
+ if (b->gi[i].fmt == tmp) break;
+ if (i == b->n_gi) return 0;
+ // count how many samples having PL!=[0..0]
+ gi = b->gi + i;
+ for (i = 0; i < b->n_smpl; ++i) {
+ uint8_t *PLi = ((uint8_t*)gi->data) + i * gi->len;
+ for (j = 0; j < gi->len; ++j)
+ if (PLi[j]) break;
+ if (j < gi->len) ++n;
+ }
+ return n;
+}
+
+static void *locate_field(const bcf1_t *b, const char *fmt, int l)
+{
+ int i;
+ uint32_t tmp;
+ tmp = bcf_str2int(fmt, l);
+ for (i = 0; i < b->n_gi; ++i)
+ if (b->gi[i].fmt == tmp) break;
+ return i == b->n_gi? 0 : b->gi[i].data;
+}
+
+int bcf_anno_max(bcf1_t *b)
+{
+ int k, max_gq, max_sp, n_het;
+ kstring_t str;
+ uint8_t *gt, *gq;
+ int32_t *sp;
+ max_gq = max_sp = n_het = 0;
+ gt = locate_field(b, "GT", 2);
+ if (gt == 0) return -1;
+ gq = locate_field(b, "GQ", 2);
+ sp = locate_field(b, "SP", 2);
+ if (sp)
+ for (k = 0; k < b->n_smpl; ++k)
+ if (gt[k]&0x3f)
+ max_sp = max_sp > (int)sp[k]? max_sp : sp[k];
+ if (gq)
+ for (k = 0; k < b->n_smpl; ++k)
+ if (gt[k]&0x3f)
+ max_gq = max_gq > (int)gq[k]? max_gq : gq[k];
+ for (k = 0; k < b->n_smpl; ++k) {
+ int a1, a2;
+ a1 = gt[k]&7; a2 = gt[k]>>3&7;
+ if ((!a1 && a2) || (!a2 && a1)) { // a het
+ if (gq == 0) ++n_het;
+ else if (gq[k] >= 20) ++n_het;
+ }
+ }
+ if (n_het) max_sp -= (int)(4.343 * log(n_het) + .499);
+ if (max_sp < 0) max_sp = 0;
+ memset(&str, 0, sizeof(kstring_t));
+ if (*b->info) kputc(';', &str);
+ ksprintf(&str, "MXSP=%d;MXGQ=%d", max_sp, max_gq);
+ bcf_append_info(b, str.s, str.l);
+ free(str.s);
+ return 0;
+}
+
+// FIXME: only data are shuffled; the header is NOT
+int bcf_shuffle(bcf1_t *b, int seed)
+{
+ int i, j, *a;
+ if (seed > 0) srand48(seed);
+ a = malloc(b->n_smpl * sizeof(int));
+ for (i = 0; i < b->n_smpl; ++i) a[i] = i;
+ for (i = b->n_smpl; i > 1; --i) {
+ int tmp;
+ j = (int)(drand48() * i);
+ tmp = a[j]; a[j] = a[i-1]; a[i-1] = tmp;
+ }
+ for (j = 0; j < b->n_gi; ++j) {
+ bcf_ginfo_t *gi = b->gi + j;
+ uint8_t *swap, *data = (uint8_t*)gi->data;
+ swap = malloc(gi->len * b->n_smpl);
+ for (i = 0; i < b->n_smpl; ++i)
+ memcpy(swap + gi->len * a[i], data + gi->len * i, gi->len);
+ free(gi->data);
+ gi->data = swap;
+ }
+ free(a);
+ return 0;
+}
+
+bcf_hdr_t *bcf_hdr_subsam(const bcf_hdr_t *h0, int n, char *const* samples, int *list)
+{
+ int i, ret, j;
+ khint_t k;
+ bcf_hdr_t *h;
+ khash_t(str2id) *hash;
+ kstring_t s;
+ s.l = s.m = 0; s.s = 0;
+ hash = kh_init(str2id);
+ for (i = 0; i < h0->n_smpl; ++i) {
+ k = kh_put(str2id, hash, h0->sns[i], &ret);
+ kh_val(hash, k) = i;
+ }
+ for (i = j = 0; i < n; ++i) {
+ k = kh_get(str2id, hash, samples[i]);
+ if (k != kh_end(hash)) {
+ list[j++] = kh_val(hash, k);
+ kputs(samples[i], &s); kputc('\0', &s);
+ }
+ }
+ if (j < n) fprintf(stderr, "<%s> %d samples in the list but not in BCF.", __func__, n - j);
+ kh_destroy(str2id, hash);
+ h = calloc(1, sizeof(bcf_hdr_t));
+ *h = *h0;
+ h->ns = 0; h->sns = 0;
+ h->name = malloc(h->l_nm); memcpy(h->name, h0->name, h->l_nm);
+ h->txt = calloc(1, h->l_txt + 1); memcpy(h->txt, h0->txt, h->l_txt);
+ h->l_smpl = s.l; h->sname = s.s;
+ bcf_hdr_sync(h);
+ return h;
+}
+
+int bcf_subsam(int n_smpl, int *list, bcf1_t *b)
+{
+ int i, j;
+ for (j = 0; j < b->n_gi; ++j) {
+ bcf_ginfo_t *gi = b->gi + j;
+ uint8_t *swap;
+ swap = malloc(gi->len * b->n_smpl);
+ for (i = 0; i < n_smpl; ++i)
+ memcpy(swap + i * gi->len, (uint8_t*)gi->data + list[i] * gi->len, gi->len);
+ free(gi->data);
+ gi->data = swap;
+ }
+ b->n_smpl = n_smpl;
+ return 0;
+}
+
+static int8_t nt4_table[128] = {
+ 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
+ 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
+ 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4 /*'-'*/, 4, 4,
+ 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
+ 4, 0, 4, 1, 4, 4, 4, 2, 4, 4, 4, 4, 4, 4, 4, 4,
+ 4, 4, 4, 4, 3, 4, 4, 4, -1, 4, 4, 4, 4, 4, 4, 4,
+ 4, 0, 4, 1, 4, 4, 4, 2, 4, 4, 4, 4, 4, 4, 4, 4,
+ 4, 4, 4, 4, 3, 4, 4, 4, -1, 4, 4, 4, 4, 4, 4, 4
+};
+
+int bcf_gl10(const bcf1_t *b, uint8_t *gl)
+{
+ int a[4], k, l, map[4], k1, j, i;
+ const bcf_ginfo_t *PL;
+ char *s;
+ if (b->ref[1] != 0 || b->n_alleles > 4) return -1; // ref is not a single base or >4 alleles
+ for (i = 0; i < b->n_gi; ++i)
+ if (b->gi[i].fmt == bcf_str2int("PL", 2)) break;
+ if (i == b->n_gi) return -1; // no PL
+ PL = b->gi + i;
+ a[0] = nt4_table[(int)b->ref[0]];
+ if (a[0] > 3 || a[0] < 0) return -1; // ref is not A/C/G/T
+ a[1] = a[2] = a[3] = -2; // -1 has a special meaning
+ if (b->alt[0] == 0) return -1; // no alternate allele
+ map[0] = map[1] = map[2] = map[3] = -2;
+ map[a[0]] = 0;
+ for (k = 0, s = b->alt, k1 = -1; k < 3 && *s; ++k, s += 2) {
+ if (s[1] != ',' && s[1] != 0) return -1; // ALT is not single base
+ a[k+1] = nt4_table[(int)*s];
+ if (a[k+1] >= 0) map[a[k+1]] = k+1;
+ else k1 = k + 1;
+ if (s[1] == 0) break; // the end of the ALT string
+ }
+ for (k = 0; k < 4; ++k)
+ if (map[k] < 0) map[k] = k1;
+ for (i = 0; i < b->n_smpl; ++i) {
+ const uint8_t *p = PL->data + i * PL->len; // the PL for the i-th individual
+ uint8_t *g = gl + 10 * i;
+ for (k = j = 0; k < 4; ++k) {
+ for (l = k; l < 4; ++l) {
+ int t, x = map[k], y = map[l];
+ if (x > y) t = x, x = y, y = t; // make sure x is the smaller
+ g[j++] = p[y * (y+1) / 2 + x];
+ }
+ }
+ }
+ return 0;
+}
+
+int bcf_gl10_indel(const bcf1_t *b, uint8_t *gl)
+{
+ int k, l, j, i;
+ const bcf_ginfo_t *PL;
+ if (b->alt[0] == 0) return -1; // no alternate allele
+ for (i = 0; i < b->n_gi; ++i)
+ if (b->gi[i].fmt == bcf_str2int("PL", 2)) break;
+ if (i == b->n_gi) return -1; // no PL
+ PL = b->gi + i;
+ for (i = 0; i < b->n_smpl; ++i) {
+ const uint8_t *p = PL->data + i * PL->len; // the PL for the i-th individual
+ uint8_t *g = gl + 10 * i;
+ for (k = j = 0; k < 4; ++k) {
+ for (l = k; l < 4; ++l) {
+ int t, x = k, y = l;
+ if (x > y) t = x, x = y, y = t; // make sure x is the smaller
+ x = y * (y+1) / 2 + x;
+ g[j++] = x < PL->len? p[x] : 255;
+ }
+ }
+ }
+ return 0;
+}
projects / samtools.git / blobdiff