c2a4061997-02-06Fredrik Hübinette (Hubbe) #define error(X) throw( ({ (X), backtrace()[0..sizeof(backtrace())-2] }) )
088e2e1998-02-12Mirar (Pontus Hagland) constant diff = __builtin.diff; constant diff_longest_sequence = __builtin.diff_longest_sequence; constant diff_compare_table = __builtin.diff_compare_table;
5bb99c1998-02-12Henrik Grubbström (Grubba) constant longest_ordered_sequence = __builtin.longest_ordered_sequence;
a7759e1998-11-17Henrik Grubbström (Grubba) constant interleave_array = __builtin.interleave_array;
088e2e1998-02-12Mirar (Pontus Hagland)  constant sort = __builtin.sort;
f7aff61998-04-14Henrik Wallin constant everynth = __builtin.everynth; constant splice = __builtin.splice; constant transpose = __builtin.transpose;
088e2e1998-02-12Mirar (Pontus Hagland) 
c2a4061997-02-06Fredrik Hübinette (Hubbe) mixed map(mixed arr, mixed fun, mixed ... args) { int e; mixed *ret;
58a0f61997-08-03Fredrik Hübinette (Hubbe)  if(mappingp(arr))
c2a4061997-02-06Fredrik Hübinette (Hubbe)  return mkmapping(indices(arr),map(values(arr),fun,@args));
4938b01998-02-28Fredrik Hübinette (Hubbe)  if(multisetp(arr)) return mkmultiset(map(indices(arr,fun,@args)));
58a0f61997-08-03Fredrik Hübinette (Hubbe)  switch(sprintf("%t",fun)) {
f4e2391997-08-03Fredrik Hübinette (Hubbe)  case "int":
c2a4061997-02-06Fredrik Hübinette (Hubbe)  return arr(@args);
f4e2391997-08-03Fredrik Hübinette (Hubbe)  case "string":
c2a4061997-02-06Fredrik Hübinette (Hubbe)  return column(arr, fun)(@args);
f4e2391997-08-03Fredrik Hübinette (Hubbe)  case "function": case "program": case "object":
c2a4061997-02-06Fredrik Hübinette (Hubbe)  ret=allocate(sizeof(arr)); for(e=0;e<sizeof(arr);e++) ret[e]=fun(arr[e],@args); return ret;
f4e2391997-08-03Fredrik Hübinette (Hubbe)  default:
5aefb21998-08-11Fredrik Hübinette (Hubbe)  error("Bad argument 2 to Array.map().\n");
f4e2391997-08-03Fredrik Hübinette (Hubbe)  }
c2a4061997-02-06Fredrik Hübinette (Hubbe) } mixed filter(mixed arr, mixed fun, mixed ... args) { int e; mixed *ret; if(mappingp(arr)) { mixed *i, *v, r; i=indices(arr); ret=map(v=values(arr),fun,@args); r=([]); for(e=0;e<sizeof(ret);e++) if(ret[e]) r[i[e]]=v[e];
8ed3541998-02-04Marcus Comstedt  return r;
4938b01998-02-28Fredrik Hübinette (Hubbe)  } if(multisetp(arr)) { return mkmultiset(filter(indices(arr,fun,@args))); } else {
c2a4061997-02-06Fredrik Hübinette (Hubbe)  int d; ret=map(arr,fun,@args); for(e=0;e<sizeof(arr);e++) if(ret[e]) ret[d++]=arr[e]; return ret[..d-1]; } }
b77d8d1998-02-28Henrik Grubbström (Grubba) array shuffle(array arr) { int i = sizeof(arr); while(i) { int j = random(i--); if (j != i) { mixed tmp = arr[i]; arr[i] = arr[j]; arr[j] = tmp; } } return(arr); }
a829461998-02-28Mirar (Pontus Hagland) array permute(array a,int n) { int q=sizeof(a); int i; a=a[..]; // copy while (n && q) { int x=n%q; n/=q; q--; if (x) [a[i],a[i+x]]=({ a[i+x],a[i] }); i++; } return a; }
c2a4061997-02-06Fredrik Hübinette (Hubbe)  int search_array(mixed *arr, mixed fun, mixed ... args) { int e; if(stringp(fun)) { for(e=0;e<sizeof(arr);e++) if(arr[e][fun](@args)) return e; return -1; } else if(functionp(fun)) { for(e=0;e<sizeof(arr);e++) if(fun(arr[e],@args)) return e; return -1; } else if(intp(fun)) { for(e=0;e<sizeof(arr);e++) if(arr[e](@args)) return e; return -1; } else { error("Bad argument 2 to filter().\n"); } } mixed *sum_arrays(function foo, mixed * ... args) { mixed *ret; int e,d; ret=allocate(sizeof(args[0])); for(e=0;e<sizeof(args[0]);e++) ret[e]=foo(@ column(args, e)); return ret; }
8d49101998-01-21Fredrik Hübinette (Hubbe) mixed *sort_array(array foo,function|void cmp, mixed ... args)
c2a4061997-02-06Fredrik Hübinette (Hubbe) { array bar,tmp; int len,start; int length; int foop, fooend, barp, barend; if(!cmp || cmp==>) { foo+=({}); sort(foo); return foo; } if(cmp == <) { foo+=({}); sort(foo); return reverse(foo); } length=sizeof(foo); foo+=({}); bar=allocate(length); for(len=1;len<length;len*=2) { start=0; while(start+len < length) { foop=start; barp=start+len; fooend=barp; barend=barp+len; if(barend > length) barend=length; while(1) { if(cmp(foo[foop],foo[barp],@args) <= 0) { bar[start++]=foo[foop++]; if(foop == fooend) { while(barp < barend) bar[start++]=foo[barp++]; break; } }else{ bar[start++]=foo[barp++]; if(barp == barend) { while(foop < fooend) bar[start++]=foo[foop++]; break; } } } } while(start < length) bar[start]=foo[start++]; tmp=foo; foo=bar; bar=tmp; } return foo; } array uniq(array a) { return indices(mkmapping(a,a)); }
0dcb7f1998-01-31Fredrik Hübinette (Hubbe) array columns(array x, array ind) { array ret=allocate(sizeof(ind)); for(int e=0;e<sizeof(ind);e++) ret[e]=column(x,ind[e]); return ret; }
905bb11998-01-31Fredrik Hübinette (Hubbe) 
f7aff61998-04-14Henrik Wallin array transpose_old(array x)
905bb11998-01-31Fredrik Hübinette (Hubbe) {
8ad6f81998-02-28Mirar (Pontus Hagland)  if (!sizeof(x)) return x; array ret=allocate(sizeof(x[0])); for(int e=0;e<sizeof(x[0]);e++) ret[e]=column(x,e); return ret;
088e2e1998-02-12Mirar (Pontus Hagland) }
b98e4a1998-02-15Mirar (Pontus Hagland) 
04a1a81998-11-30Martin Stjernholm // diff3, complement to diff array(array(array)) diff3 (array a, array b, array c) { // This does not necessarily produce the optimal sequence between // all three arrays. A diff_longest_sequence() that takes any number // of arrays would be nice. array(int) seq_ab = diff_longest_sequence (a, b); array(int) seq_bc = diff_longest_sequence (b, c); array(int) seq_ca = diff_longest_sequence (c, a);
f5c8ba1998-12-02Martin Stjernholm  array(int) aeq = allocate (sizeof (a) + 1); array(int) beq = allocate (sizeof (b) + 1); array(int) ceq = allocate (sizeof (c) + 1); aeq[sizeof (a)] = beq[sizeof (b)] = ceq[sizeof (c)] = 7;
04a1a81998-11-30Martin Stjernholm  for (int i = 0, j = 0; j < sizeof (seq_ab); i++)
f5c8ba1998-12-02Martin Stjernholm  if (a[i] == b[seq_ab[j]]) aeq[i] |= 2, beq[seq_ab[j]] |= 1, j++;
04a1a81998-11-30Martin Stjernholm  for (int i = 0, j = 0; j < sizeof (seq_bc); i++)
f5c8ba1998-12-02Martin Stjernholm  if (b[i] == c[seq_bc[j]]) beq[i] |= 2, ceq[seq_bc[j]] |= 1, j++;
04a1a81998-11-30Martin Stjernholm  for (int i = 0, j = 0; j < sizeof (seq_ca); i++)
f5c8ba1998-12-02Martin Stjernholm  if (c[i] == a[seq_ca[j]]) ceq[i] |= 2, aeq[seq_ca[j]] |= 1, j++;
04a1a81998-11-30Martin Stjernholm  array(array) ares = ({}), bres = ({}), cres = ({}); int ai = 0, bi = 0, ci = 0;
f5c8ba1998-12-02Martin Stjernholm  int prevodd = -2;
04a1a81998-11-30Martin Stjernholm 
f5c8ba1998-12-02Martin Stjernholm  int i = 10; while (i-- && !(aeq[ai] & beq[bi] & ceq[ci] & 4)) { array empty = ({}), apart = empty, bpart = empty, cpart = empty;
04a1a81998-11-30Martin Stjernholm 
f5c8ba1998-12-02Martin Stjernholm  if (aeq[ai] == 2 && beq[bi] == 1) { // a and b are equal. do apart += ({a[ai++]}), bi++; while (aeq[ai] == 2 && beq[bi] == 1); bpart = apart; while (!ceq[ci]) cpart += ({c[ci++]}); prevodd = 2; } else if (beq[bi] == 2 && ceq[ci] == 1) { // b and c are equal. do bpart += ({b[bi++]}), ci++; while (beq[bi] == 2 && ceq[ci] == 1); cpart = bpart; while (!aeq[ai]) apart += ({a[ai++]}); prevodd = 0; } else if (ceq[ci] == 2 && aeq[ai] == 1) { // c and a are equal. do cpart += ({c[ci++]}), ai++; while (ceq[ci] == 2 && aeq[ai] == 1); apart = cpart; while (!beq[bi]) bpart += ({b[bi++]}); prevodd = 1;
04a1a81998-11-30Martin Stjernholm  }
f5c8ba1998-12-02Martin Stjernholm  else if (aeq[ai] & beq[bi] & ceq[ci] == 3) { // All are equal. do apart += ({a[ai++]}), bi++, ci++; while (aeq[ai] & beq[bi] & ceq[ci] == 3); cpart = bpart = apart; prevodd = -1; } else { // Haven't got any equivalences in this block. Avoid adjacent // complementary blocks (e.g. ({({"foo"}),({}),({})}) next to // ({({}),({"bar"}),({"bar"})})). Besides that, leave the // odd-one-out sequence empty in a block where two are equal. if (aeq[ai] & beq[bi] & ceq[ci]) { // Got cyclically interlocking equivalences. Have to break one // of them. Prefer the shortest. int which, newblock, mask, i, oi; array(int) eq, oeq; array arr; for (i = 0;; i++) if (aeq[ai] != aeq[ai + i]) { which = 0, newblock = prevodd != 0 && (prevodd == -2 || sizeof (ares[-1])); mask = aeq[ai] ^ 3, i = ai, eq = aeq, arr = a; if (mask == 1) oi = bi, oeq = beq; else oi = ci, oeq = ceq; break; } else if (beq[bi] != beq[bi + i]) { which = 1, newblock = prevodd != 1 && (prevodd == -2 || sizeof (bres[-1])); mask = beq[bi] ^ 3, i = bi, eq = beq, arr = b; if (mask == 1) oi = ci, oeq = ceq; else oi = ai, oeq = aeq; break; } else if (ceq[ci] != ceq[ci + i]) { which = 2, newblock = prevodd != 2 && (prevodd == -2 || sizeof (cres[-1])); mask = ceq[ci] ^ 3, i = ci, eq = ceq, arr = c; if (mask == 1) oi = ai, oeq = aeq; else oi = bi, oeq = beq; break; } if (newblock) ares += ({empty}), bres += ({empty}), cres += ({empty}), prevodd = -1; while (oeq[oi] != mask) oi++; array part = ({}); mask ^= 3; do part += ({arr[i++]}), oeq[oi++] = 0; while (eq[i] == mask); switch (which) { case 0: ai = i; ares[-1] += part; break; case 1: bi = i; bres[-1] += part; break; case 2: ci = i; cres[-1] += part; break; } continue; }
34e2b31998-12-01Martin Stjernholm 
f5c8ba1998-12-02Martin Stjernholm  else { switch (prevodd) { case 0: apart = ares[-1], ares[-1] = ({}); break; case 1: bpart = bres[-1], bres[-1] = ({}); break; case 2: cpart = cres[-1], cres[-1] = ({}); break; } prevodd = -1; while (!aeq[ai]) apart += ({a[ai++]}); while (!beq[bi]) bpart += ({b[bi++]}); while (!ceq[ci]) cpart += ({c[ci++]}); } }
34e2b31998-12-01Martin Stjernholm 
f5c8ba1998-12-02Martin Stjernholm  ares += ({apart}), bres += ({bpart}), cres += ({cpart});
04a1a81998-11-30Martin Stjernholm  } return ({ares, bres, cres}); }
b98e4a1998-02-15Mirar (Pontus Hagland) // diff3, complement to diff (alpha stage)
04a1a81998-11-30Martin Stjernholm array(array(array(mixed))) diff3_old(array mid,array left,array right)
b98e4a1998-02-15Mirar (Pontus Hagland) { array lmid,ldst; array rmid,rdst;
d774421998-02-16Mirar (Pontus Hagland)  [lmid,ldst]=diff(mid,left); [rmid,rdst]=diff(mid,right);
b98e4a1998-02-15Mirar (Pontus Hagland) 
04a1a81998-11-30Martin Stjernholm  int l=0,r=0,n;
b98e4a1998-02-15Mirar (Pontus Hagland)  array res=({}); int lpos=0,rpos=0; array eq=({});
189dab1998-02-16Mirar (Pontus Hagland)  int x;
b98e4a1998-02-15Mirar (Pontus Hagland) 
723b281998-02-19Mirar (Pontus Hagland)  for (n=0; ;)
b98e4a1998-02-15Mirar (Pontus Hagland)  {
723b281998-02-19Mirar (Pontus Hagland)  while (l<sizeof(lmid) && lpos>=sizeof(lmid[l]))
b98e4a1998-02-15Mirar (Pontus Hagland)  {
189dab1998-02-16Mirar (Pontus Hagland)  if (sizeof(ldst[l])>lpos) res+=({({({}),ldst[l][lpos..],({})})});
b98e4a1998-02-15Mirar (Pontus Hagland)  l++;
189dab1998-02-16Mirar (Pontus Hagland)  lpos=0;
b98e4a1998-02-15Mirar (Pontus Hagland)  }
723b281998-02-19Mirar (Pontus Hagland)  while (r<sizeof(rmid) && rpos>=sizeof(rmid[r]))
b98e4a1998-02-15Mirar (Pontus Hagland)  {
189dab1998-02-16Mirar (Pontus Hagland)  if (sizeof(rdst[r])>rpos) res+=({({({}),({}),rdst[r][rpos..]})}); r++; rpos=0;
b98e4a1998-02-15Mirar (Pontus Hagland)  }
723b281998-02-19Mirar (Pontus Hagland)  if (n==sizeof(mid)) break;
189dab1998-02-16Mirar (Pontus Hagland)  x=min(sizeof(lmid[l])-lpos,sizeof(rmid[r])-rpos);
b98e4a1998-02-15Mirar (Pontus Hagland) 
189dab1998-02-16Mirar (Pontus Hagland)  if (lmid[l]==ldst[l] && rmid[r]==rdst[r])
b98e4a1998-02-15Mirar (Pontus Hagland)  {
189dab1998-02-16Mirar (Pontus Hagland)  eq=lmid[l][lpos..lpos+x-1]; res+=({({eq,eq,eq})}); } else if (lmid[l]==ldst[l]) { eq=lmid[l][lpos..lpos+x-1]; res+=({({eq,eq,rdst[r][rpos..rpos+x-1]})}); } else if (rmid[r]==rdst[r]) { eq=rmid[r][rpos..rpos+x-1]; res+=({({eq,ldst[l][lpos..lpos+x-1],eq})}); } else { res+=({({lmid[l][lpos..lpos+x-1], ldst[l][lpos..lpos+x-1], rdst[r][rpos..rpos+x-1]})});
b98e4a1998-02-15Mirar (Pontus Hagland)  }
723b281998-02-19Mirar (Pontus Hagland) // werror(sprintf("-> %-5{%O%} %-5{%O%} %-5{%O%}" // " x=%d l=%d:%d r=%d:%d \n",@res[-1],x,l,lpos,r,rpos));
189dab1998-02-16Mirar (Pontus Hagland)  rpos+=x; lpos+=x; n+=x;
b98e4a1998-02-15Mirar (Pontus Hagland)  }
d774421998-02-16Mirar (Pontus Hagland)  return transpose(res);
b98e4a1998-02-15Mirar (Pontus Hagland) }