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gsacak.c
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// vim: noai:ts=2:sw=2
#include "gsacak.h"
// set only the highest bit as 1, i.e. 1000...
//const unsigned int EMPTY_k=((unsigned int)1)<<(sizeof(unsigned int)*8-1);
const uint_t EMPTY_k=((uint_t)1)<<(sizeof(uint_t)*8-1);
// get s[i] at a certain level
#define chr(i) (cs==sizeof(int_t)?((int_t*)s)[i]:(cs==sizeof(int_text)?((int_text*)s)[i]:((unsigned char *)s)[i]))
#define true 1
#define false 0
#define DEPTH 0 // compute time and size of reduced problem for each recursion call
#define PHASES 0 // compute time for each phase
#define RMQ_L 2 //variants = (1, trivial) (2, using Gog's stack)
#define RMQ_S 2 //variants = (1, trivial) (2, using Gog's stack)
#define STACK_SIZE_L 894 //to use 10Kb of working space
#define STACK_SIZE_S 894 //to use 10Kb of working space
#define EMPTY_STRING 0 //check if there is an empty string in the input collection
typedef struct _pair{
uint_t idx;
int_t lcp;
} t_pair_k;
int compare_k (const void * a, const void * b){
if(*(const uint_t *)a < *(const uint_t *)b) return -1;
if(*(const uint_t *)a > *(const uint_t *)b) return 1;
return 0;
}
void stack_push_k(t_pair_k* STACK, int_t *top, uint_t idx, int_t lcp){
STACK[*top].idx=idx;
STACK[*top].lcp=lcp;
(*top)++;
}
void compute_lcp_phi_sparse(int_t *s, uint_t *SA1,
uint_t *RA, int_t *LCP, int_t *PLCP,
uint_t n1, int cs, uint_t separator) {
uint_t i;
PLCP[SA1[0]]=0;//PLCP* (lms) is stored in PLCP array
for(i=1; i<n1; i++)
PLCP[SA1[i]] = LCP[i];
LCP[SA1[0]]=0;//PHI is stored in LCP array
for(i=1; i<n1; i++)
LCP[SA1[i]] = SA1[i-1]; //RA[SA1[i-1]];
int_t l=0; //q=0;
for(i=0; i<n1-1;i++){
if(chr(RA[i])==separator) continue;
l = maxval(PLCP[i], l);//consider the LCP-value of the lms-substrings
while(chr(RA[i]+l)==chr(RA[LCP[i]]+l) && !(chr(RA[i]+l) == separator && chr(RA[LCP[i]]+l)==separator) ) ++l;
PLCP[i]=l;
if(LCP[i]==n1-1) l -= RA[i+1]-RA[i];
else l -= maxval(RA[i+1]-RA[i], RA[LCP[i]+1]-RA[LCP[i]]);//LCP[i] stores the distance of i-th suffix to its successor
}
LCP[0]=0;
for(i=1; i<n1;i++) LCP[i]=PLCP[SA1[i]];
}
/*****************************************************************************/
void getBuckets_k(int_t *s,
uint_t *bkt, uint_t n,
unsigned int K, int end, int cs) {
uint_t i, sum=0;
// clear all buckets .
for(i=0; i<K; i++) bkt[i]=0;
// compute the size of each bucket .
for(i=0; i<n; i++) bkt[chr(i)]++;
for(i=0; i<K; i++) {
sum+=bkt[i];
bkt[i]=end ? sum-1 : sum-bkt[i];
}
}
/*****************************************************************************/
void putSuffix0(uint_t *SA,
int_t *s, uint_t *bkt,
uint_t n, unsigned int K, int_t n1, int cs) {
uint_t i, j;
// find the end of each bucket.
getBuckets_k(s, bkt, n, K, true, cs);
// put the suffixes into their buckets.
for(i=n1-1; i>0; i--) {
j=SA[i]; SA[i]=0;
SA[bkt[chr(j)]--]=j;
}
SA[0]=n-1; // set the single sentinel suffix.
}
void putSuffix0_generalized(uint_t *SA,
uint_t *s, uint_t *bkt,
uint_t n, unsigned int K, int_t n1, int cs, uint_t separator) {
uint_t i, j;
// find the end of each bucket.
getBuckets_k((int_t*)s, bkt, n, K, true, cs);
int_t tmp=bkt[separator]--;// shifts one position left of bkt[separator]
// put the suffixes into their buckets.
for(i=n1-1; i>0; i--) {
j=SA[i]; SA[i]=0;
SA[bkt[chr(j)]--]=j;
}
// SA[0]=n-1; // set the single sentinel suffix.
SA[tmp]=SA[0]-1;// insert the last separator at the end of bkt[separator]
}
void putSuffix0_generalized_LCP(uint_t *SA, int_t *LCP,
uint_t *s, uint_t *bkt,
uint_t n, unsigned int K, int_t n1, int cs, uint_t separator) {
uint_t i, j;
int_t l;
// find the end of each bucket.
getBuckets_k((int_t*)s, bkt, n, K, true, cs);
int_t tmp=bkt[separator]--;// shifts one position left of bkt[separator]
// put the suffixes into their buckets.
for(i=n1-1; i>0; i--) {
j=SA[i]; SA[i]=U_MAX;
l=LCP[i]; LCP[i]=0;
SA[bkt[chr(j)]]=j;
LCP[bkt[chr(j)]--]=l;
}
// SA[0]=n-1; // set the single sentinel suffix.
SA[tmp]=SA[0]-1;// insert the last separator at the end of bkt[separator]
}
void putSuffix0_generalized_DA(uint_t *SA, int_da *DA,
uint_t *s, uint_t *bkt,
uint_t n, unsigned int K, int_t n1, int cs, uint_t separator) {
uint_t i, j;
// find the end of each bucket.
getBuckets_k((int_t*)s, bkt, n, K, true, cs);
int_t tmp=bkt[separator]--;// shifts one position left of bkt[separator]
// put the suffixes into their buckets.
for(i=n1-1; i>0; i--) {
j=SA[i]; SA[i]=0;
SA[bkt[chr(j)]]=j;
DA[bkt[chr(j)]--]=DA[i];
}
// SA[0]=n-1; // set the single sentinel suffix.
SA[tmp]=SA[0]-1;// insert the last separator at the end of bkt[separator]
DA[tmp]= (int_da) tmp-1;
}
void putSuffix0_generalized_LCP_DA(uint_t *SA, int_t *LCP, int_da *DA,
uint_t *s, uint_t *bkt,
uint_t n, unsigned int K, int_t n1, int cs, uint_t separator) {
uint_t i, j;
int_t l;
// find the end of each bucket.
getBuckets_k((int_t*)s, bkt, n, K, true, cs);
int_t tmp=bkt[separator]--;// shifts one position left of bkt[separator]
// put the suffixes into their buckets.
for(i=n1-1; i>0; i--) {
j=SA[i]; SA[i]=U_MAX;
l=LCP[i]; LCP[i]=0;
SA[bkt[chr(j)]]=j;
DA[bkt[chr(j)]]=DA[i];
LCP[bkt[chr(j)]--]=l;
}
// SA[0]=n-1; // set the single sentinel suffix.
SA[tmp]=SA[0]-1;// insert the last separator at the end of bkt[separator]
DA[tmp]= (int_da) tmp-1;
}
/*****************************************************************************/
void induceSAl0(uint_t *SA,
int_t *s, uint_t *bkt,
uint_t n, unsigned int K, int_t suffix, int cs) {
uint_t i, j;
// find the head of each bucket.
getBuckets_k(s, bkt, n, K, false, cs);
bkt[0]++; // skip the virtual sentinel.
for(i=0; i<n; i++)
if(SA[i]>0) {
j=SA[i]-1;
if(chr(j)>=chr(j+1)) {
SA[bkt[chr(j)]]=j;
bkt[chr(j)]++;
if(!suffix && i>0) SA[i]=0;
}
}
}
void induceSAs0(uint_t *SA,
int_t *s, uint_t *bkt,
uint_t n, unsigned int K, int_t suffix, int cs) {
uint_t i, j;
// find the end of each bucket.
getBuckets_k(s, bkt, n, K, true, cs);
for(i=n-1; i>0; i--)
if(SA[i]>0) {
j=SA[i]-1;
if(chr(j)<=chr(j+1) && bkt[chr(j)]<i) {
SA[bkt[chr(j)]]=j;
bkt[chr(j)]--;
if(!suffix) SA[i]=0;
}
}
}
/*****************************************************************************/
void induceSAl0_generalized(uint_t *SA,
uint_t *s, uint_t *bkt,
uint_t n, unsigned int K, int_t suffix, int cs, uint_t separator) {
uint_t i, j;
// find the head of each bucket.
getBuckets_k((int_t*)s, bkt, n, K, false, cs);
bkt[0]++; // skip the virtual sentinel.
for(i=0; i<n; i++)
if(SA[i]>0) {
j=SA[i]-1;
if(chr(j)>=chr(j+1) ) {
if(chr(j)!=separator)//gsa-is
SA[bkt[chr(j)]++]=j;
if(!suffix && i>0) SA[i]=0;
}
}
}
void induceSAs0_generalized(uint_t *SA,
uint_t *s, uint_t *bkt,
uint_t n, uint_t K, int_t suffix, int cs, uint_t separator) {
uint_t i, j;
// find the end of each bucket.
getBuckets_k((int_t*)s, bkt, n, K, true, cs);
for(i=n-1; i>0; i--)
if(SA[i]>0) {
j=SA[i]-1;
if(chr(j)<=chr(j+1) && bkt[chr(j)]<i) {
if(chr(j)!=separator)
SA[bkt[chr(j)]--]=j;
if(!suffix) SA[i]=0;
}
}
}
/*****************************************************************************/
void induceSAl0_generalized_LCP(uint_t *SA, int_t *LCP,
uint_t *s, uint_t *bkt,
uint_t n, unsigned int K, int cs, uint_t separator) {
uint_t i, j;
for(i=0;i<K;i++)
if(bkt[i]+1<n) if(SA[bkt[i]+1]!=U_MAX) LCP[bkt[i]+1]=I_MIN;
// find the head of each bucket.
getBuckets_k((int_t*)s, bkt, n, K, false, cs);
for(i=0;i<K;i++)
if(bkt[i]<n) LCP[bkt[i]]=-2;
#if RMQ_L == 1
int_t *M=(int_t *)malloc(sizeof(int_t)*K);
for(i=0;i<K;i++){
M[i]=I_MAX;
}
#elif RMQ_L == 2
uint_t* last_occ = (uint_t*) malloc(K*sizeof(uint_t));
uint_t* tmp = (uint_t*) malloc(K*sizeof(uint_t));
t_pair_k* STACK = (t_pair_k*) malloc((STACK_SIZE_L+2)*sizeof(t_pair_k));
int_t top = 0;
stack_push_k(STACK, &top, 0, -1);//init
for(i=0;i<K;i++) last_occ[i]=0;
#endif
#if DEBUG
printf("inducing..\n");
for(i=0; i<n; i++)
printf("%" PRIdN "\t", SA[i]+1);
printf("\n");
printf("LCP\n");
for(i=0; i<n; i++)
printf("%" PRIdN "\t", LCP[i]);
printf("\n\n");
#endif
bkt[0]++; // skip the virtual sentinel.
for(i=0; i<n; i++){
if(SA[i]!=U_MAX){
if(LCP[i]==I_MIN){ //is a L/S-seam position
int_t l=0;
if(SA[bkt[chr(SA[i])]-1]<n-1)
while(chr(SA[i]+l)==chr(SA[bkt[chr(SA[i])]-1]+l))++l;
LCP[i]=l;
}
#if RMQ_L == 1
uint_t k;
for(k=0; k<K; k++) if(M[k]>LCP[i]) M[k] = maxval(0,LCP[i]);
#elif RMQ_L == 2
int_t min_lcp=0;
uint_t last;
if(!SA[i]) last = 0;
else{
last = last_occ[chr(SA[i]-1)];
last_occ[chr(SA[i]-1)] = i+1;
}
int_t lcp=maxval(0,LCP[i]);
while(STACK[(top)-1].lcp>=lcp) (top)--;
stack_push_k(STACK, &top, i+1, lcp);
j = top-1;
while(STACK[j].idx>last) j--;
min_lcp=STACK[(j+1)].lcp;
#endif
if(SA[i]>0) {
j=SA[i]-1;
if(chr(j)>=chr(j+1))
if(chr(j)!=separator){//gsa-is
SA[bkt[chr(j)]]=j;
#if RMQ_L == 1
LCP[bkt[chr(j)]]+=M[chr(j)]+1;
M[chr(j)] = I_MAX;
#elif RMQ_L == 2
LCP[bkt[chr(j)]]+=min_lcp+1;
#endif
bkt[chr(j)]++;
}
if(bkt[chr(SA[i])]-1<i){ //if is LMS-type
if(chr(SA[i])!=separator)
SA[i]=U_MAX;
}
}
#if RMQ_L == 2
if(top>STACK_SIZE_L){//if stack is full
int_t j;
memcpy(tmp, last_occ, K*sizeof(uint_t));
qsort(tmp, K, sizeof(uint_t), compare_k);
int_t curr=1, end=1;
STACK[top].idx=U_MAX;
for(j=0;j<K; j++){
if(STACK[end-1].idx < tmp[j]+1){
while(STACK[curr].idx<tmp[j]+1) curr++;
if(curr<top){
stack_push_k(STACK, &end, STACK[curr].idx, STACK[curr].lcp);
curr++;
}
}
}
if(end>=STACK_SIZE_L){
fprintf(stderr,"ERROR: induceSAl0_LCP\n");
exit(1);
}
top = end;
}
#endif
}
}
#if RMQ_L == 1
free(M);
#elif RMQ_L == 2
free(STACK);
free(last_occ);
free(tmp);
#endif
}
void induceSAs0_generalized_LCP(uint_t *SA, int_t* LCP,
uint_t *s, uint_t *bkt,
uint_t n, uint_t K, int cs, uint_t separator) {
uint_t i, j;
// find the end of each bucket.
getBuckets_k((int_t*)s, bkt, n, K, true, cs);
#if RMQ_S == 1
int_t *M=(int_t *)malloc(sizeof(int_t)*K);
for(i=0;i<K;i++) M[i]=I_MAX;
#elif RMQ_S == 2
uint_t* last_occ = (uint_t*) malloc(K*sizeof(uint_t));
uint_t* tmp = (uint_t*) malloc(K*sizeof(uint_t));
t_pair_k* STACK = (t_pair_k*) malloc((STACK_SIZE_S+2)*sizeof(t_pair_k));
int_t top = 0;
stack_push_k(STACK, &top, n, -1); //init
for(i=0;i<K;i++) last_occ[i]=n-1;
#endif
for(i=n-1; i>0; i--){
if(SA[i]>0) {
j=SA[i]-1;
if(chr(j)<=chr(j+1) && bkt[chr(j)]<i)// induce S-type
if(chr(j)!=separator){
SA[bkt[chr(j)]]=j;
#if RMQ_S == 1
if(LCP[bkt[chr(j)]+1]>=0)
LCP[bkt[chr(j)]+1]=M[chr(j)]+1;
if(LCP[bkt[chr(j)]]>0)
LCP[bkt[chr(j)]]=I_MAX;
#elif RMQ_S == 2
int_t min = I_MAX, end = top-1;
int_t last=last_occ[chr(j)];
while(STACK[end].idx<=last) end--;
min=STACK[(end+1)].lcp;
last_occ[chr(j)] = i;
if(LCP[bkt[chr(j)]+1]>=0)
LCP[bkt[chr(j)]+1]=min+1;
#endif
#if RMQ_S == 1
M[chr(j)] = I_MAX;
#endif
bkt[chr(j)]--;
if(SA[bkt[chr(j)]]!=U_MAX) {//L/S-seam
int_t l=0;
while(chr(SA[bkt[chr(j)]+1]+l)==chr(SA[bkt[chr(j)]]+l))++l;
LCP[bkt[chr(j)]+1]=l;
}
}
}
if(LCP[i]<0) LCP[i]=0;
#if RMQ_S == 1
int_t k;
for(k=0; k<K; k++) if(M[k]>LCP[i]) M[k] = LCP[i];
#elif RMQ_S == 2
int_t lcp=maxval(0,LCP[i]);
while(STACK[(top)-1].lcp>=lcp) (top)--;
stack_push_k(STACK, &top, i, lcp);
if(top>=STACK_SIZE_S){
int_t j;
memcpy(tmp, last_occ, K*sizeof(uint_t));
qsort(tmp, K, sizeof(uint_t), compare_k);
int_t curr=1, end=1;
for(j=K-1;j>=0; j--){
if(tmp[j] < STACK[end-1].idx){
while(STACK[curr].idx>tmp[j] && curr < top) curr++;
if(curr>=top) break;
stack_push_k(STACK, &end, STACK[curr].idx, STACK[curr].lcp);
curr++;
}
}
if(end>=STACK_SIZE_S){
fprintf(stderr,"ERROR: induceSAl0_LCP\n");
exit(1);
}
top = end;
}
#endif
}
LCP[0]=0;
//variant 1
#if RMQ_S == 1
free(M);
#elif RMQ_S == 2
free(STACK);
free(last_occ);
free(tmp);
#endif
}
/*****************************************************************************/
void induceSAl0_generalized_DA(uint_t *SA, int_da* DA,
uint_t *s, uint_t *bkt,
uint_t n, unsigned int K, int cs, uint_t separator) {
uint_t i, j;
// find the head of each bucket.
getBuckets_k((int_t*)s, bkt, n, K, false, cs);
bkt[0]++; // skip the virtual sentinel.
for(i=0; i<n; i++)
if(SA[i]>0) {
j=SA[i]-1;
if(chr(j)>=chr(j+1) ) {
if(chr(j)!=separator){//gsa-is
SA[bkt[chr(j)]]=j;
DA[bkt[chr(j)]++]=DA[i];
}
}
}
}
void induceSAs0_generalized_DA(uint_t *SA, int_da* DA,
uint_t *s, uint_t *bkt,
uint_t n, uint_t K, int cs, uint_t separator) {
uint_t i, j;
// find the end of each bucket.
getBuckets_k((int_t*)s, bkt, n, K, true, cs);
for(i=n-1; i>0; i--)
if(SA[i]>0) {
j=SA[i]-1;
if(chr(j)<=chr(j+1) && bkt[chr(j)]<i) {
if(chr(j)!=separator){
SA[bkt[chr(j)]]=j;
DA[bkt[chr(j)]--]=DA[i];
}
}
}
}
/*****************************************************************************/
void induceSAl0_generalized_LCP_DA(uint_t *SA, int_t *LCP, int_da *DA,
uint_t *s, uint_t *bkt,
uint_t n, unsigned int K, int cs, uint_t separator) {
uint_t i, j;
for(i=0;i<K;i++)
if(bkt[i]+1<n) if(SA[bkt[i]+1]!=U_MAX) LCP[bkt[i]+1]=I_MIN;
// find the head of each bucket.
getBuckets_k((int_t*)s, bkt, n, K, false, cs);
for(i=0;i<K;i++)
if(bkt[i]<n) LCP[bkt[i]]=-2;
#if RMQ_L == 1
int_t *M=(int_t *)malloc(sizeof(int_t)*K);
for(i=0;i<K;i++){
M[i]=I_MAX;
}
#elif RMQ_L == 2
uint_t* last_occ = (uint_t*) malloc(K*sizeof(uint_t));
uint_t* tmp = (uint_t*) malloc(K*sizeof(uint_t));
t_pair_k* STACK = (t_pair_k*) malloc((STACK_SIZE_L+2)*sizeof(t_pair_k));
int_t top = 0;
stack_push_k(STACK, &top, 0, -1);//init
for(i=0;i<K;i++) last_occ[i]=0;
#endif
#if DEBUG
printf("inducing..\n");
for(i=0; i<n; i++)
printf("%" PRIdN "\t", SA[i]+1);
printf("\n");
printf("LCP\n");
for(i=0; i<n; i++)
printf("%" PRIdN "\t", LCP[i]);
printf("\n\n");
#endif
bkt[0]++; // skip the virtual sentinel.
for(i=0; i<n; i++){
if(SA[i]!=U_MAX){
if(LCP[i]==I_MIN){ //is a L/S-seam position
int_t l=0;
if(SA[bkt[chr(SA[i])]-1]<n-1)
while(chr(SA[i]+l)==chr(SA[bkt[chr(SA[i])]-1]+l))++l;
LCP[i]=l;
}
#if RMQ_L == 1
uint_t k;
for(k=0; k<K; k++) if(M[k]>LCP[i]) M[k] = maxval(0,LCP[i]);
#elif RMQ_L == 2
int_t min_lcp=0;
uint_t last;
if(!SA[i]) last = 0;
else{
last = last_occ[chr(SA[i]-1)];
last_occ[chr(SA[i]-1)] = i+1;
}
int_t lcp=maxval(0,LCP[i]);
while(STACK[(top)-1].lcp>=lcp) (top)--;
stack_push_k(STACK, &top, i+1, lcp);
j = top-1;
while(STACK[j].idx>last) j--;
min_lcp=STACK[(j+1)].lcp;
#endif
if(SA[i]>0) {
j=SA[i]-1;
if(chr(j)>=chr(j+1))
if(chr(j)!=separator){//gsa-is
SA[bkt[chr(j)]]=j;
DA[bkt[chr(j)]]=DA[i];
#if RMQ_L == 1
LCP[bkt[chr(j)]]+=M[chr(j)]+1;
M[chr(j)] = I_MAX;
#elif RMQ_L == 2
LCP[bkt[chr(j)]]+=min_lcp+1;
#endif
bkt[chr(j)]++;
}
if(bkt[chr(SA[i])]-1<i){ //if is LMS-type
if(chr(SA[i])!=separator)
SA[i]=U_MAX;
}
}
#if RMQ_L == 2
if(top>STACK_SIZE_L){//if stack is full
int_t j;
memcpy(tmp, last_occ, K*sizeof(uint_t));
qsort(tmp, K, sizeof(uint_t), compare_k);
int_t curr=1, end=1;
STACK[top].idx=U_MAX;
for(j=0;j<K; j++){
if(STACK[end-1].idx < tmp[j]+1){
while(STACK[curr].idx<tmp[j]+1) curr++;
if(curr<top){
stack_push_k(STACK, &end, STACK[curr].idx, STACK[curr].lcp);
curr++;
}
}
}
if(end>=STACK_SIZE_L){
fprintf(stderr,"ERROR: induceSAl0_LCP\n");
exit(1);
}
top = end;
}
#endif
}
}
#if RMQ_L == 1
free(M);
#elif RMQ_L == 2
free(STACK);
free(last_occ);
free(tmp);
#endif
}
void induceSAs0_generalized_LCP_DA(uint_t *SA, int_t* LCP, int_da* DA,
uint_t *s, uint_t *bkt,
uint_t n, uint_t K, int cs, uint_t separator) {
uint_t i, j;
// find the end of each bucket.
getBuckets_k((int_t*)s, bkt, n, K, true, cs);
#if RMQ_S == 1
int_t *M=(int_t *)malloc(sizeof(int_t)*K);
for(i=0;i<K;i++) M[i]=I_MAX;
#elif RMQ_S == 2
uint_t* last_occ = (uint_t*) malloc(K*sizeof(uint_t));
uint_t* tmp = (uint_t*) malloc(K*sizeof(uint_t));
t_pair_k* STACK = (t_pair_k*) malloc((STACK_SIZE_S+2)*sizeof(t_pair_k));
int_t top = 0;
stack_push_k(STACK, &top, n, -1); //init
for(i=0;i<K;i++) last_occ[i]=n-1;
#endif
for(i=n-1; i>0; i--){
if(SA[i]>0) {
j=SA[i]-1;
if(chr(j)<=chr(j+1) && bkt[chr(j)]<i)// induce S-type
if(chr(j)!=separator){
SA[bkt[chr(j)]]=j;
DA[bkt[chr(j)]]=DA[i];
#if RMQ_S == 1
if(LCP[bkt[chr(j)]+1]>=0)
LCP[bkt[chr(j)]+1]=M[chr(j)]+1;
if(LCP[bkt[chr(j)]]>0)
LCP[bkt[chr(j)]]=I_MAX;
#elif RMQ_S == 2
int_t min = I_MAX, end = top-1;
int_t last=last_occ[chr(j)];
while(STACK[end].idx<=last) end--;
min=STACK[(end+1)].lcp;
last_occ[chr(j)] = i;
if(LCP[bkt[chr(j)]+1]>=0)
LCP[bkt[chr(j)]+1]=min+1;
#endif
#if RMQ_S == 1
M[chr(j)] = I_MAX;
#endif
bkt[chr(j)]--;
if(SA[bkt[chr(j)]]!=U_MAX) {//L/S-seam
int_t l=0;
while(chr(SA[bkt[chr(j)]+1]+l)==chr(SA[bkt[chr(j)]]+l))++l;
LCP[bkt[chr(j)]+1]=l;
}
}
}
if(LCP[i]<0) LCP[i]=0;
#if RMQ_S == 1
int_t k;
for(k=0; k<K; k++) if(M[k]>LCP[i]) M[k] = LCP[i];
#elif RMQ_S == 2
int_t lcp=maxval(0,LCP[i]);
while(STACK[(top)-1].lcp>=lcp) (top)--;
stack_push_k(STACK, &top, i, lcp);
if(top>=STACK_SIZE_S){
int_t j;
memcpy(tmp, last_occ, K*sizeof(uint_t));
qsort(tmp, K, sizeof(uint_t), compare_k);
int_t curr=1, end=1;
for(j=K-1;j>=0; j--){
if(tmp[j] < STACK[end-1].idx){
while(STACK[curr].idx>tmp[j] && curr < top) curr++;
if(curr>=top) break;
stack_push_k(STACK, &end, STACK[curr].idx, STACK[curr].lcp);
curr++;
}
}
if(end>=STACK_SIZE_S){
fprintf(stderr,"ERROR: induceSAl0_LCP\n");
exit(1);
}
top = end;
}
#endif
}
LCP[0]=0;
//variant 1
#if RMQ_S == 1
free(M);
#elif RMQ_S == 2
free(STACK);
free(last_occ);
free(tmp);
#endif
}
/*****************************************************************************/
void putSubstr0(uint_t *SA,
int_t *s, uint_t *bkt,
uint_t n, unsigned int K, int cs) {
uint_t i, cur_t, succ_t;
// find the end of each bucket.
getBuckets_k(s, bkt, n, K, true, cs);
// set each item in SA as empty.
for(i=0; i<n; i++) SA[i]=0;
succ_t=0; // s[n-2] must be L-type.
for(i=n-2; i>0; i--) {
cur_t=(chr(i-1)<chr(i) ||
(chr(i-1)==chr(i) && succ_t==1)
)?1:0;
if(cur_t==0 && succ_t==1) SA[bkt[chr(i)]--]=i;
succ_t=cur_t;
}
// set the single sentinel LMS-substring.
SA[0]=n-1;
}
/*****************************************************************************/
void putSubstr0_generalized(uint_t *SA,
uint_t *s, uint_t *bkt,
uint_t n, unsigned int K, int cs, uint_t separator) {
uint_t i, cur_t, succ_t;
// find the end of each bucket.
getBuckets_k((int_t*)s, bkt, n, K, true, cs);
// set each item in SA as empty.
for(i=0; i<n; i++) SA[i]=0;
// gsa-is
int_t tmp=bkt[separator]--;// shifts one position left of bkt[separator]
SA[0]=n-1;// set the single sentinel LMS-substring.
SA[tmp] = SA[0]-1; // insert the last separator at the end of bkt[separator]
int_t p=n-2;
succ_t=0; // s[n-2] must be L-type.
for(i=n-2; i>0; i--) {
cur_t=(chr(i-1)<chr(i) ||
(chr(i-1)==chr(i) && succ_t==1)
)?1:0;
if(cur_t==0 && succ_t==1){
if(chr(i)==separator)
SA[++bkt[chr(p)]]=0; // removes LMS-positions that induces separator suffixes
SA[bkt[chr(i)]--]=i;
p=i;
}
succ_t=cur_t;
}
}
/*****************************************************************************/
void putSuffix1(int_t *SA, int_t *s, int_t n1, int cs) {
int_t i, j, pos=n1, cur, pre=-1;
for(i=n1-1; i>0; i--) {
j=SA[i]; SA[i]=EMPTY_k;
cur=chr(j);
if(cur!=pre) {
pre=cur; pos=cur;
}
SA[pos--]=j;
}
}
void induceSAl1(int_t *SA, int_t *s,
int_t n, int_t suffix, int cs) {
int_t h, i, j, step=1;
for(i=0; i<n; i+=step) {
step=1; j=SA[i]-1;
if(SA[i]<=0) continue;
int_t c=chr(j), c1=chr(j+1);
int_t isL=c>=c1;
if(!isL) continue;
// s[j] is L-type.
int_t d=SA[c];
if(d>=0) {
// SA[c] is borrowed by the left
// neighbor bucket.
// shift-left the items in the
// left neighbor bucket.
int_t foo, bar;
foo=SA[c];
for(h=c-1; SA[h]>=0||SA[h]==EMPTY_k; h--)
{ bar=SA[h]; SA[h]=foo; foo=bar; }
SA[h]=foo;
if(h<i) step=0;
d=EMPTY_k;
}
if(d==EMPTY_k) { // SA[c] is empty.
if(c<n-1 && SA[c+1]==EMPTY_k) {
SA[c]=-1; // init the counter.
SA[c+1]=j;
}
else
SA[c]=j; // a size-1 bucket.
}
else { // SA[c] is reused as a counter.
int_t pos=c-d+1;
if(pos>n-1 || SA[pos]!=EMPTY_k) {
// we are running into the right
// neighbor bucket.
// shift-left one step the items
// of bucket(SA, S, j).
for(h=0; h<-d; h++)
SA[c+h]=SA[c+h+1];
pos--;
if(c<i) step=0;
}
else
SA[c]--;
SA[pos]=j;
}
int_t c2;
int_t isL1=(j+1<n-1) && (c1>(c2=chr(j+2)) || (c1==c2 && c1<i)); // is s[SA[i]] L-type?
if((!suffix || !isL1) && i>0) {
int_t i1=(step==0)?i-1:i;
SA[i1]=EMPTY_k;
}
}
// scan to shift-left the items in each bucket
// with its head being reused as a counter.
for(i=1; i<n; i++) {
j=SA[i];
if(j<0 && j!=EMPTY_k) { // is SA[i] a counter?
for(h=0; h<-j; h++)
SA[i+h]=SA[i+h+1];
SA[i+h]=EMPTY_k;
}
}
}