Scripts/loadsave.rb

   1 # coding: utf-8
   2 #
   3 #  loadsave.rb
   4 #
   5 #  Created by Toshi Nagata.
   6 #  Copyright 2008 Toshi Nagata. All rights reserved.
   7 #
   8 # This program is free software; you can redistribute it and/or modify
   9 # it under the terms of the GNU General Public License as published by
  10 # the Free Software Foundation version 2 of the License.
  11 #
  12 # This program is distributed in the hope that it will be useful,
  13 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15 # GNU General Public License for more details.
  16
  17 require "scanf.rb"
  18
  19 class Molecule
  20
  21   def loadcrd(filename)
  22     if natoms == 0
  23       raise MolbyError, "cannot load crd; the molecule is empty"
  24     end
  25         fp = open(filename, "rb")
  26     count = 0
  27         frame = 0
  28         coords = (0...natoms).collect { Vector3D[0, 0, 0] }
  29     periodic = (self.box && self.box[4].any? { |n| n != 0 })
  30         show_progress_panel("Loading AMBER crd file...")
  31 #    puts "sframe = #{sframe}, pos = #{fp.pos}"
  32     while line = fp.gets
  33       line.chomp!
  34           values = line.scan(/......../)
  35           if fp.lineno == 1
  36             #  The first line should be skipped. However, if this line seems to contain
  37                 #  coordinates, then try reading them
  38                 if values.size != 10 && (values.size > 10 || values.size != natoms * 3)
  39                   next  #  Wrong number of coordinates
  40                 end
  41                 if values.each { |v| Float(v) rescue break } == nil
  42                   #  The line contains non-number
  43                   next
  44             end
  45                 puts "Loadcrd: The title line seems to be missing"
  46           end
  47       if count + values.size > natoms * 3
  48         raise MolbyError, sprintf("crd format error - too many values at line %d in file %s; number of atoms = %d, current frame = %d", fp.lineno, fp.path, natoms, frame)
  49       end
  50           values.each { |v|
  51             coords[count / 3][count % 3] = Float(v)
  52             count += 1
  53           }
  54       if count == natoms * 3
  55             #  End of frame
  56                 if frame == 0 && atoms.all? { |ap| ap.r.x == 0.0 && ap.r.y == 0.0 && ap.r.z == 0.0 }
  57                         #  Do not create a new frame
  58                         atoms.each_with_index { |ap, i| ap.r = coords[i] }
  59                 else
  60                         create_frame([coords])
  61                 end
  62                 if periodic
  63                   #  Should have box information
  64                   line = fp.gets
  65                   if line == nil || (values = line.chomp.scan(/......../)).length != 3
  66                     #  Periodic but no cell information
  67                         puts "Loadcrd: the molecule has a periodic cell but the crd file does not contain cell info"
  68                         periodic = false
  69                         redo
  70               end
  71                   self.cell = [Float(values[0]), Float(values[1]), Float(values[2]), 90, 90, 90]
  72                 end
  73         count = 0
  74         frame += 1
  75                 if frame % 5 == 0
  76                   set_progress_message("Loading AMBER crd file...\n(#{frame} frames completed)")
  77                 end
  78       end
  79     end
  80         fp.close
  81         if (count > 0)
  82           raise MolbyError, sprintf("crd format error - file ended in the middle of frame %d", frame)
  83         end
  84         hide_progress_panel
  85         if frame > 0
  86           self.frame = self.nframes - 1
  87           return true
  88         else
  89           return false
  90         end
  91   end
  92
  93   def savecrd(filename)
  94     if natoms == 0
  95       raise MolbyError, "cannot save crd; the molecule is empty"
  96     end
  97     fp = open(filename, "wb")
  98         show_progress_panel("Saving AMBER crd file...")
  99         fp.printf("TITLE: %d atoms\n", natoms)
 100         cframe = self.frame
 101         nframes = self.nframes
 102         j = 0
 103         self.update_enabled = false
 104         begin
 105                 (0...nframes).each { |i|
 106                   select_frame(i)
 107                   j = 0
 108                   while (j < natoms * 3)
 109                         w = atoms[j / 3].r[j % 3]
 110                         fp.printf(" %7.3f", w)
 111                         fp.print("\n") if (j % 10 == 9 || j == natoms * 3 - 1)
 112                         j += 1
 113                   end
 114                   if i % 5 == 0
 115                         set_progress_message("Saving AMBER crd file...\n(#{i} frames completed)")
 116                   end
 117                 }
 118         ensure
 119                 self.update_enabled = true
 120         end
 121         select_frame(cframe)
 122         fp.close
 123         hide_progress_panel
 124         true
 125   end
 126
 127   alias :loadmdcrd :loadcrd
 128   alias :savemdcrd :savecrd
 129
 130   def sub_load_gamess_log_basis_set(lines, lineno)
 131     ln = 0
 132         while (line = lines[ln])
 133                 ln += 1
 134                 break if line =~ /SHELL\s+TYPE\s+PRIMITIVE/
 135         end
 136         ln += 1
 137         i = -1
 138         nprims = 0
 139         sym = -10  #  undefined
 140         ncomps = 0
 141         clear_basis_set
 142         while (line = lines[ln])
 143                 ln += 1
 144                 break if line =~ /TOTAL NUMBER OF BASIS SET/
 145                 if line =~ /^\s*$/
 146                   #  End of one shell
 147                   add_gaussian_orbital_shell(i, sym, nprims)
 148                   nprims = 0
 149                   sym = -10
 150                   next
 151                 end
 152                 a = line.split
 153                 if a.length == 1
 154                   i += 1
 155                   ln += 1  #  Skip the blank line
 156                   next
 157                 elsif a.length == 5 || a.length == 6
 158                   if sym == -10
 159                         case a[1]
 160                         when "S"
 161                           sym = 0; n = 1
 162                         when "P"
 163                           sym = 1; n = 3
 164                         when "L"
 165                           sym = -1; n = 4
 166                         when "D"
 167                           sym = 2; n = 6
 168                         when "F"
 169                           sym = 3; n = 10
 170                         when "G"
 171                           sym = 4; n = 15
 172                         else
 173                           raise MolbyError, "Unknown gaussian shell type at line #{lineno + ln}"
 174                         end
 175                         ncomps += n
 176                   end
 177                   if (a.length == 5 && sym == -1) || (a.length == 6 && sym != -1)
 178                         raise MolbyError, "Wrong format in gaussian shell information at line #{lineno + ln}"
 179                   end
 180                   exp = Float(a[3])
 181                   c = Float(a[4])
 182                   csp = Float(a[5] || 0.0)
 183                   add_gaussian_primitive_coefficients(exp, c, csp)
 184                   nprims += 1
 185                 else
 186                   raise MolbyError, "Error in reading basis set information at line #{lineno + ln}"
 187                 end
 188         end
 189         return ncomps
 190   end
 191
 192   def sub_load_gamess_log_mo_coefficients(lines, lineno, ncomps)
 193     ln = 0
 194         idx = 0
 195         alpha = true
 196         while (line = lines[ln]) != nil
 197                 ln += 1
 198                 if line =~ /BETA SET/
 199                         alpha = false
 200                         next
 201                 end
 202                 if line =~ /------------/ || line =~ /EIGENVECTORS/ || line =~ /\*\*\*\* (ALPHA|BETA) SET/
 203                         next
 204                 end
 205                 next unless line =~ /^\s*\d/
 206                 mo_labels = line.split       #  MO numbers (1-based)
 207                 mo_energies = lines[ln].split
 208                 mo_symmetries = lines[ln + 1].split
 209         #       puts "mo #{mo_labels.inspect}"
 210                 ln += 2
 211                 mo = mo_labels.map { [] }    #  array of *independent* empty arrays
 212                 while (line = lines[ln]) != nil
 213                         ln += 1
 214                         break unless line =~ /^\s*\d/
 215                         5.times { |i|
 216                           s = line[15 + 11 * i, 11].chomp
 217                           break if s =~ /^\s*$/
 218                           mo[i].push(Float(s)) rescue print "line = #{line}, s = #{s}"
 219                         # line[15..-1].split.each_with_index { |s, i|
 220                         #       mo[i].push(Float(s))
 221                         }
 222                 end
 223                 mo.each_with_index { |m, i|
 224                         idx = Integer(mo_labels[i])
 225                         set_mo_coefficients(idx + (alpha ? 0 : ncomps), Float(mo_energies[i]), m)
 226                 #       if mo_labels[i] % 8 == 1
 227                 #               puts "set_mo_coefficients #{idx}, #{mo_energies[i]}, [#{m[0]}, ..., #{m[-1]}]"
 228                 #       end
 229                 }
 230 #               if line =~ /^\s*$/
 231 #                       next
 232 #               else
 233 #                       break
 234 #               end
 235         end
 236   end
 237
 238   def sub_load_gamess_log(fp)
 239
 240     if natoms == 0
 241                 new_unit = true
 242         else
 243                 new_unit = false
 244     end
 245         self.update_enabled = false
 246         mes = "Loading GAMESS log file"
 247         show_progress_panel(mes)
 248         energy = nil
 249         ne_alpha = ne_beta = 0   #  number of electrons
 250         rflag = nil  #  0, UHF; 1, RHF; 2, ROHF
 251         mo_count = 0
 252         search_mode = 0   #  0, no search; 1, optimize; 2, irc
 253         ncomps = 0   #  Number of AO terms per one MO (sum of the number of components over all shells)
 254         alpha_beta = nil   #  Flag to read alpha/beta MO appropriately
 255         nsearch = 0  #  Search number for optimization
 256         begin
 257         #       if nframes > 0
 258         #               create_frame
 259         #               frame = nframes - 1
 260         #       end
 261                 n = 0
 262                 while 1
 263                         line = fp.gets
 264                         if line == nil
 265                                 break
 266                         end
 267                         line.chomp!
 268                         if line =~ /ATOM\s+ATOMIC\s+COORDINATES/ || line =~ /COORDINATES OF ALL ATOMS ARE/ || line =~ /COORDINATES \(IN ANGSTROM\) FOR \$DATA GROUP ARE/
 269                                 set_progress_message(mes + "\nReading atomic coordinates...")
 270                                 if line =~ /ATOMIC/
 271                                   first_line = true
 272                                 #  if !new_unit
 273                                 #    next   #  Skip initial atomic coordinates unless loading into an empty molecule
 274                                 #  end
 275                                   line = fp.gets  #  Skip one line
 276                                 else
 277                                   first_line = false
 278                                   nsearch += 1
 279                                   if line =~ /COORDINATES OF ALL ATOMS ARE/
 280                                     line = fp.gets  #  Skip one line
 281                               end
 282                                 end
 283                                 n = 0
 284                                 coords = []
 285                                 names = []
 286                                 while (line = fp.gets) != nil
 287                                         break if line =~ /^\s*$/ || line =~ /END OF ONE/ || line =~ /\$END/
 288                                         next if line =~ /-----/
 289                                         name, charge, x, y, z = line.split
 290                                         v = Vector3D[x, y, z]
 291                                         coords.push(v * (first_line ? 0.529177 : 1.0))  #  Bohr to angstrom
 292                                         names.push([name, charge])
 293                                 end
 294                                 if new_unit
 295                                         #  Build a new molecule
 296                                         names.each_index { |i|
 297                                                 ap = add_atom(names[i][0])
 298                                                 ap.atomic_number = names[i][1].to_i
 299                                                 ap.atom_type = ap.element
 300                                                 ap.r = coords[i]
 301                                         }
 302                                         #  Find bonds
 303                                         guess_bonds
 304                                 #       atoms.each { |ap|
 305                                 #               j = ap.index
 306                                 #               (j + 1 ... natoms).each { |k|
 307                                 #                       if calc_bond(j, k) < 1.7
 308                                 #                               create_bond(j, k)
 309                                 #                       end
 310                                 #               }
 311                                 #       }
 312                                         new_unit = false
 313                                 #       create_frame
 314                                 else
 315                                     dont_create = false
 316                                         if (search_mode == 1 && nsearch == 1) || first_line
 317                                                 #  The input coordinate and the first frame for geometry search
 318                                                 #  can have the same coordinate as the last frame; if this is the case, then
 319                                                 #  do not create the new frame
 320                                                 select_frame(nframes - 1)
 321                                                 dont_create = true
 322                                                 each_atom { |ap|
 323                                                   if (ap.r - coords[ap.index]).length2 > 1e-8
 324                                                     dont_create = false
 325                                                         break
 326                                                   end
 327                                                 }
 328                                         end
 329                                         if !dont_create
 330                                                 create_frame([coords])  #  Should not be (coords)
 331                                         end
 332                                 end
 333                                 set_property("energy", energy) if energy
 334                         elsif line =~ /BEGINNING GEOMETRY SEARCH POINT/
 335                                 energy = nil   #  New search has begun, so clear the energy
 336                                 search_mode = 1
 337                         elsif line =~ /CONSTRAINED OPTIMIZATION POINT/
 338                                 energy = nil   #  New search has begun, so clear the energy
 339                                 search_mode = 2
 340                         elsif line =~ /FINAL .* ENERGY IS *([-.0-9]+) AFTER/
 341                                 if search_mode != 2
 342                                         energy = $1.to_f
 343                                         set_property("energy", energy)
 344                                 end
 345                         elsif line =~ /TOTAL ENERGY += +([-.0-9]+)/
 346                                 energy = $1.to_f
 347                         elsif false && line =~ /EQUILIBRIUM GEOMETRY LOCATED/i
 348                                 set_progress_message(mes + "\nReading optimized coordinates...")
 349                                 fp.gets; fp.gets; fp.gets
 350                                 n = 0
 351                                 while (line = fp.gets) != nil
 352                                         break if line =~ /^\s*$/
 353                                         line.chomp
 354                                         atom, an, x, y, z = line.split
 355                                         ap = atoms[n]
 356                                         ap.r = Vector3D[x, y, z]
 357                                         n += 1
 358                                         break if n >= natoms
 359                                 end
 360                         #       if ne_alpha > 0 && ne_beta > 0
 361                         #               #  Allocate basis set record again, to update the atomic coordinates
 362                         #               allocate_basis_set_record(rflag, ne_alpha, ne_beta)
 363                         #       end
 364                         elsif line =~ /ATOMIC BASIS SET/
 365                                 lines = []
 366                                 lineno = fp.lineno
 367                                 while (line = fp.gets)
 368                                         break if line =~ /TOTAL NUMBER OF BASIS SET/
 369                                         line.chomp!
 370                                         lines.push(line)
 371                                 end
 372                                 ncomps = sub_load_gamess_log_basis_set(lines, lineno)
 373                         elsif line =~ /NUMBER OF OCCUPIED ORBITALS/
 374                                 line =~ /=\s*(\d+)/
 375                                 n = Integer($1)
 376                                 if line =~ /ALPHA/
 377                                         ne_alpha = n
 378                                 else
 379                                         ne_beta = n
 380                                 end
 381                         elsif line =~ /SCFTYP=(\w+)/
 382                                 scftyp = $1
 383                                 if ne_alpha > 0 || ne_beta > 0
 384                                         rflag = 0
 385                                         case scftyp
 386                                         when "RHF"
 387                                                 rflag = 1
 388                                         when "ROHF"
 389                                                 rflag = 2
 390                                         end
 391                                 end
 392                         elsif line =~ /(ALPHA|BETA)\s*SET/
 393                                 alpha_beta = $1
 394                         elsif line =~ /^\s*(EIGENVECTORS|MOLECULAR ORBITALS)\s*$/
 395                                 if mo_count == 0
 396                                         clear_mo_coefficients
 397                                         set_mo_info(:type=>["UHF", "RHF", "ROHF"][rflag], :alpha=>ne_alpha, :beta=>ne_beta)
 398                                 end
 399                                 mo_count += 1
 400                                 line = fp.gets; line = fp.gets
 401                                 lineno = fp.lineno
 402                                 lines = []
 403                                 set_progress_message(mes + "\nReading MO coefficients...")
 404                                 while (line = fp.gets)
 405                                         break if line =~ /\.\.\.\.\.\./ || line =~ /----------------/
 406                                         line.chomp!
 407                                         lines.push(line)
 408                                 end
 409                                 sub_load_gamess_log_mo_coefficients(lines, lineno, ncomps)
 410                                 set_progress_message(mes)
 411                         elsif line =~ /N A T U R A L   B O N D   O R B I T A L   A N A L Y S I S/
 412                                 nbo_lines = []
 413                                 while (line = fp.gets) != nil
 414                                   break if line =~ /done with NBO analysis/
 415                                   nbo_lines.push(line)
 416                                 end
 417                                 import_nbo_log(nbo_lines)
 418                         end
 419                 end
 420         end
 421         if nframes > 0
 422           select_frame(nframes - 1)
 423         end
 424         if energy && energy != 0.0
 425           set_property("energy", energy)
 426         end
 427         hide_progress_panel
 428         self.update_enabled = true
 429         (n > 0 ? true : false)
 430   end
 431
 432   def sub_load_gaussian_log(fp)
 433
 434     if natoms == 0
 435                 new_unit = true
 436         else
 437                 new_unit = false
 438     end
 439         if nframes > 0
 440                 create_frame
 441                 frame = nframes - 1
 442         end
 443         n = 0
 444         nf = 0
 445         energy = nil
 446         use_input_orientation = false
 447         show_progress_panel("Loading Gaussian out file...")
 448         while 1
 449                 line = fp.gets
 450                 if line == nil
 451                         break
 452                 end
 453                 line.chomp!
 454                 if line =~ /(Input|Standard) orientation/
 455                         match = $1
 456                         if match == "Input"
 457                                 use_input_orientation = true if nf == 0
 458                                 next if !use_input_orientation
 459                         else
 460                                 next if use_input_orientation
 461                         end
 462                         4.times { line = fp.gets }    #  Skip four lines
 463                         n = 0
 464                         coords = []
 465                         anums = []
 466                         while (line = fp.gets) != nil
 467                                 break if line =~ /-----/
 468                                 num, charge, type, x, y, z = line.split
 469                                 coords.push(Vector3D[x, y, z])
 470                                 anums.push(charge)
 471                                 n += 1
 472                         end
 473                         if new_unit
 474                                 #  Build a new molecule
 475                                 anums.each_index { |i|
 476                                         ap = add_atom("X")
 477                                         ap.atomic_number = anums[i]
 478                                         ap.atom_type = ap.element
 479                                         ap.name = sprintf("%s%d", ap.element, i)
 480                                         ap.r = coords[i]
 481                                 }
 482                                 #  Find bonds
 483                         #       atoms.each { |ap|
 484                         #               j = ap.index
 485                         #               (j + 1 ... natoms).each { |k|
 486                         #                       if calc_bond(j, k) < 1.7
 487                         #                               create_bond(j, k)
 488                         #                       end
 489                         #               }
 490                         #       }
 491                                 guess_bonds
 492                                 new_unit = false
 493                         #       create_frame
 494                         else
 495                                 create_frame([coords])  #  Should not be (coords)
 496                         end
 497                         if energy
 498                                 # TODO: to ensure whether the energy output line comes before
 499                                 # or after the atomic coordinates.
 500                                 set_property("energy", energy)
 501                         end
 502                         nf += 1
 503                 elsif line =~ /SCF Done: *E\(\w+\) *= *([-.0-9]+)/
 504                         energy = $1.to_f
 505                 end
 506         end
 507         if energy
 508                 set_property("energy", energy)
 509         end
 510         hide_progress_panel
 511         (n > 0 ? true : false)
 512   end
 513
 514   def sub_load_psi4_log(fp)
 515     if natoms == 0
 516       new_unit = true
 517     else
 518       new_unit = false
 519     end
 520     n = 0
 521     nf = 0
 522     energy = nil
 523
 524     show_progress_panel("Loading Psi4 output file...")
 525
 526     getline = lambda { @lineno += 1; return fp.gets }
 527
 528     #  Import coordinates and energies
 529     vecs = []
 530     ats = []
 531     first_frame = nframes
 532     trans = nil
 533     hf_type = nil
 534     nalpha = nil
 535     nbeta = nil
 536     while line = getline.call
 537       if line =~ /==> Geometry <==/
 538         #  Skip until line containing "------"
 539         while line = getline.call
 540           break if line =~ /------/
 541         end
 542         vecs.clear
 543         index = 0
 544         #  Read atom positions
 545         while line = getline.call
 546           line.chomp!
 547           break if line =~ /^\s*$/
 548           tokens = line.split(' ')
 549           if natoms > 0 && first_frame == nframes
 550             if index >= natoms || tokens[0] != atoms[index].element
 551               hide_progress_panel
 552               raise MolbyError, "The atom list does not match the current structure at line #{@lineno}"
 553             end
 554           end
 555           vecs.push(Vector3D[Float(tokens[1]), Float(tokens[2]), Float(tokens[3])])
 556           if natoms == 0
 557             ats.push(tokens[0])
 558           end
 559           index += 1
 560         end
 561         if natoms == 0
 562           #  Create molecule from the initial geometry
 563           ats.each_with_index { |aname, i|
 564             #  Create atoms
 565             ap = add_atom(aname)
 566             ap.element = aname
 567             ap.atom_type = ap.element
 568             ap.name = sprintf("%s%d", aname, i)
 569             ap.r = vecs[i]
 570           }
 571           guess_bonds
 572         else
 573           if vecs.length != natoms
 574             break  #  Log file is incomplete
 575           end
 576           #  Does this geometry differ from the last one?
 577           vecs.length.times { |i|
 578             if (atoms[i].r - vecs[i]).length2 > 1.0e-14
 579               #  Create a new frame and break
 580               create_frame
 581               vecs.length.times { |j|
 582                 atoms[j].r = vecs[j]
 583               }
 584               break
 585             end
 586           }
 587         end
 588         #  end geometry
 589       elsif line =~ /Final Energy: +([-.0-9]+)/
 590         #  Energy for this geometry
 591         energy = Float($1)
 592         set_property("energy", energy)
 593         if line =~ /RHF/
 594           hf_type = "RHF"
 595         elsif line =~ /UHF/
 596           hf_type = "UHF"
 597         elsif line =~ /ROHF/
 598           hf_type = "ROHF"
 599         end
 600       elsif line =~ /^ *Nalpha *= *(\d+)/
 601         nalpha = Integer($1)
 602       elsif line =~ /^ *Nbeta *= *(\d+)/
 603         nbeta = Integer($1)
 604       end
 605     end
 606     hide_progress_panel
 607     clear_basis_set
 608     clear_mo_coefficients
 609     set_mo_info(:type => hf_type, :alpha => nalpha, :beta => nbeta)
 610     return true
 611   end
 612
 613   #  mol.set_mo_info should be set before calling this function
 614   #  Optional label is for importing JANPA output: "NAO" or "CPLO"
 615   #  If label is not nil, then returns a hash containing the following key/value pairs:
 616   #    :atoms => an array of [element_symbol, seq_num, atomic_num, x, y, z] (angstrom)
 617   #    :gto => an array of an array of [sym, [ex0, c0, ex1, c1, ...]]
 618   #    :moinfo => an array of [sym, energy, spin (0 or 1), occ]
 619   #    :mo => an array of [c0, c1, ...]
 620   def sub_load_molden(fp, label = nil)
 621     getline = lambda { @lineno += 1; return fp.gets }
 622     bohr = 0.529177210903
 623     errmsg = nil
 624     ncomps = 0  #  Number of components (AOs)
 625     occ_alpha = 0  #  Number of occupied alpha orbitals
 626     occ_beta = 0   #  Number of occupied beta orbitals
 627     if label
 628       hash = Hash.new
 629     end
 630     #  The GTOs (orbital type, contractions and exponents) are stored in gtos[]
 631     #  and set just before first [MO] is processed.
 632     #  This is because we do not know whether the orbital type is cartesian or spherical
 633     #  until we see lines like "[5D]".
 634     gtos = []
 635     spherical_d = false
 636     spherical_f = false
 637     spherical_g = false
 638     #  Number of components for each orbital type
 639     ncomp_hash = { 0=>1, 1=>3, -1=>4, 2=>6, -2=>5, 3=>10, -3=>7, 4=>15, -4=>9 }
 640     catch :ignore do
 641       while line = getline.call
 642         if line =~ /^\[Atoms\]/
 643           i = 0
 644           while line = getline.call
 645             if line =~ /^[A-Z]/
 646               #  element, index, atomic_number, x, y, z (in AU)
 647               a = line.split(' ')
 648               if label
 649                 (hash[:atoms] ||= []).push([a[0], Integer(a[1]), Integer(a[2]), Float(a[3]) * bohr, Float(a[4]) * bohr, Float(a[5]) * bohr])
 650               else
 651                 if atoms[i].atomic_number != Integer(a[2]) ||
 652                   (atoms[i].x - Float(a[3]) * bohr).abs > 1e-4 ||
 653                   (atoms[i].y - Float(a[4]) * bohr).abs > 1e-4 ||
 654                   (atoms[i].z - Float(a[5]) * bohr).abs > 1e-4
 655                   errmsg = "The atom list does not match the current molecule."
 656                   throw :ignore
 657                 end
 658               end
 659               i += 1
 660             else
 661               break
 662             end
 663           end
 664           redo  #  The next line will be the beginning of the next block
 665         elsif line =~ /^\[GTO\]/
 666           shell = 0
 667           atom_index = 0
 668           while line = getline.call
 669             #  index, 0?
 670             a = line.split(' ')
 671             break if a.length != 2
 672             atom_gtos = []  #  [[sym1, [e11, c11, e12, c12, ...], add_exp1], [sym2, [e21, c22, ...], add_exp2], ...]
 673             #  loop for shells
 674             while line = getline.call
 675               #  type, no_of_primitives, 1.00?
 676               a = line.split(' ')
 677               break if a.length != 3   #  Terminated by a blank line
 678               a[0] =~ /^([a-z]+)([0-9]+)?$/
 679               symcode = $1
 680               add_exp = ($2 == nil ? 0 : $2.to_i)
 681               case symcode
 682               when "s"
 683                 sym = 0
 684               when "p"
 685                 sym = 1
 686               when "d"
 687                 sym = 2
 688               when "f"
 689                 sym = 3
 690               when "g"
 691                 sym = 4
 692               else
 693                 raise MolbyError, "Unknown gaussian shell type '#{a[0]}' at line #{@lineno} in MOLDEN file"
 694               end
 695               nprimitives = Integer(a[1])
 696               gtoline = [sym, [], add_exp]
 697               atom_gtos.push(gtoline)
 698               nprimitives.times { |i|
 699                 line = getline.call   #  exponent, contraction
 700                 b = line.split(' ')
 701                 gtoline[1].push(Float(b[0]), Float(b[1]))
 702               }
 703               #  end of one shell
 704               shell += 1
 705             end
 706             #  end of one atom
 707             atom_index += 1
 708             gtos.push(atom_gtos)
 709           end
 710           if label
 711             hash[:gto] = gtos
 712           end
 713           redo  #  The next line will be the beginning of the next block
 714         elsif line =~ /^\[5D\]/ || line =~ /^\[5D7F\]/
 715           spherical_d = spherical_f = true
 716         elsif line =~ /^\[5D10F\]/
 717           spherical_d = true
 718           spherical_f = false
 719         elsif line =~ /^\[7F\]/
 720           spherical_f = true
 721         elsif line =~ /^\[9G\]/
 722           spherical_g = true
 723         elsif line =~ /^\[MO\]/
 724           #  Add shell info and primitive coefficients to molecule
 725           gtos.each_with_index { | atom_gtos, atom_index|
 726             atom_gtos.each { |gtoline|
 727               sym = gtoline[0]
 728               #  Change orbital type if we use spherical functions
 729               sym = -2 if sym == 2 && spherical_d
 730               sym = -3 if sym == 3 && spherical_f
 731               sym = -4 if sym == 4 && spherical_g
 732               gtoline[0] = sym
 733               coeffs = gtoline[1]
 734               nprimitives = coeffs.length / 2
 735               add_exp = gtoline[2]
 736               ncomps += ncomp_hash[sym]
 737               if !label
 738                 add_gaussian_orbital_shell(atom_index, sym, nprimitives, add_exp)
 739                 nprimitives.times { |prim|
 740                   add_gaussian_primitive_coefficients(coeffs[prim * 2], coeffs[prim * 2 + 1], 0.0)
 741                 }
 742               end
 743             }
 744           }
 745           m = []
 746           idx_alpha = 1   #  set_mo_coefficients() accepts 1-based index of MO
 747           idx_beta = 1
 748           if label
 749             hash[:mo] = []
 750             hash[:moinfo] = []
 751           end
 752           while true
 753             #  Loop for each MO
 754             m.clear
 755             ene = nil
 756             spin = nil
 757             sym = nil   #  Not used in Molby
 758             occ = nil
 759             i = 0
 760             while line = getline.call
 761               if line =~ /^ *Sym= *(\w+)/
 762                 sym = $1
 763               elsif line =~ /^ *Ene= *([-+.0-9e]+)/
 764                 ene = Float($1)
 765               elsif line =~ /^ *Spin= *(\w+)/
 766                 spin = $1
 767               elsif line =~ /^ *Occup= *([-+.0-9e]+)/
 768                 occ = Float($1)
 769                 if occ > 0.0
 770                   if spin == "Alpha"
 771                     occ_alpha += 1
 772                   else
 773                     occ_beta += 1
 774                   end
 775                 end
 776                 if label
 777                   hash[:moinfo].push([sym, ene, (spin == "Alpha" ? 0 : 1), occ])
 778                 end
 779               elsif line =~ /^ *([0-9]+) +([-+.0-9e]+)/
 780                 m[i] = Float($2)
 781                 i += 1
 782                 if i >= ncomps
 783                   if spin == "Alpha"
 784                     idx = idx_alpha
 785                     idx_alpha += 1
 786                   else
 787                     idx = idx_beta
 788                     idx_beta += 1
 789                   end
 790                   set_mo_coefficients(idx, ene, m)
 791                   if label
 792                     hash[:mo].push(m.dup)
 793                   end
 794                   break
 795                 end
 796               else
 797                 break
 798               end
 799             end
 800             break if i < ncomps  #  no MO info was found
 801           end
 802           #  TODO: reorder D, F, G coefficients for Molby order
 803           next
 804         end #  end if
 805       end   #  end while
 806     end     #  end catch
 807     if errmsg
 808       message_box("The MOLDEN file was found but not imported. " + errmsg, "Psi4 import info", :ok)
 809       return (label ? nil : false)
 810     end
 811     return (label ? hash : true)
 812   end
 813
 814   #  Import the JANPA log and related molden files
 815   #  Files: inppath.{NAO.molden,CLPO.molden,janpa.log}
 816   #  If inppath.spherical.molden is available, then clear existing mo info
 817   #  and load from it (i.e. use the basis set converted by molden2molden)
 818   def sub_load_janpa_log(inppath)
 819     begin
 820       fp = File.open(inppath + ".janpa.log", "rt") rescue fp = nil
 821       if fp == nil
 822         hide_progress_panel  #  Close if it is open
 823         message_box("Cannot open JANPA log file #{inppath + '.janpa.log'}: " + $!.to_s)
 824         return false
 825       end
 826       print("Importing #{inppath}.janpa.log.\n")
 827       lineno = 0
 828       getline = lambda { lineno += 1; return fp.gets }
 829       h = Hash.new
 830       mfiles = Hash.new
 831       h["software"] = "JANPA"
 832       nao_num = nil  #  Set later
 833       nao_infos = [] #  index=atom_index, value=Hash with key "s", "px", "py" etc.
 834       #  nao_infos[index][key]: array of [nao_num, occupancy], in the reverse order of appearance
 835       while line = getline.call
 836         if line =~ /molden2molden: a conversion tool for MOLDEN/
 837           while line = getline.call
 838             break if line =~ /^All done!/
 839             if line =~ /\.spherical\.molden/
 840               #  The MOs are converted to spherical basis set
 841               #  Clear the existing MO and load *.spherical.molden
 842               sname = inppath + ".spherical.molden"
 843               fps = File.open(sname, "rt") rescue fps = nil
 844               if fps != nil
 845                 print("Importing #{sname}.\n")
 846                 @lineno = 0
 847                 type = get_mo_info(:type)
 848                 alpha = get_mo_info(:alpha)
 849                 beta = get_mo_info(:beta)
 850                 clear_basis_set
 851                 set_mo_info(:type=>type, :alpha=>alpha, :beta=>beta)
 852                 #  mol.@hf_type should be set before calling sub_load_molden
 853                 @hf_type = type
 854                 sub_load_molden(fps)
 855                 fps.close
 856               end
 857             end
 858           end
 859         elsif line =~ /^NAO \#/
 860           h["NAO"] = []
 861           while line = getline.call
 862             break if line !~ /^\s*[1-9]/
 863             num = Integer(line[0, 5])
 864             name = line[5, 21]
 865             occ = Float(line[26, 11])
 866             #  like A1*: R1*s(0)
 867             #  atom_number, occupied?, group_number, orb_sym, angular_number
 868             name =~ /\s*[A-Z]+([0-9]+)(\*?):\s* R([0-9]+)\*([a-z]+)\(([-0-9]+)\)/
 869             anum = Integer($1)
 870             occupied = $2
 871             group_num = Integer($3)
 872             orb_sym = $4
 873             ang_num = Integer($5)
 874             orb_desc = orb_sym
 875             if orb_desc == "p"
 876               orb_desc += ["z", "x", "y"][ang_num + 1]
 877             elsif orb_desc == "d"
 878             #  TODO: handle d, f, g orbitals
 879             end
 880             h["NAO"].push([num, anum, occupied, group_num, orb_desc, occ])
 881             nao_num = h["NAO"].length
 882             ((nao_infos[anum - 1] ||= Hash.new)[orb_desc] ||= []).unshift([nao_num, occ])
 883           end
 884           #  Create labels
 885           h["NAO_L"] = []
 886           nao_infos.each_with_index { |value, atom_index|
 887             aname = self.atoms[atom_index].name
 888             value.each { |orb_desc, ar|
 889               ar.each_with_index { |v, group_index|
 890                 if v[1] > 1.9
 891                   label = "core"
 892                 elsif v[1] > 0.01
 893                   label = "val"
 894                 else
 895                   label = "ryd"
 896                 end
 897                 principle = group_index + 1
 898                 orb_sym = orb_desc[0]
 899                 if orb_sym == "p"
 900                   principle += 1
 901                 elsif orb_sym == "d"
 902                   principle += 2
 903                 elsif orb_sym == "f"
 904                   principle += 3
 905                 elsif orb_sym == "g"
 906                   principle += 4
 907                 end
 908                 h["NAO_L"][v[0] - 1] = "#{aname} (#{principle}#{orb_desc}) (#{label})"
 909               }
 910             }
 911           }
 912         elsif line =~ /^\s*(C?)LPO\s+D e s c r i p t i o n\s+Occupancy\s+Composition/
 913           if $1 == "C"
 914             key = "CLPO"
 915           else
 916             key = "LPO"
 917           end
 918           h[key] = []
 919           while line = getline.call
 920             break if line =~ /^\s*$/
 921             num = Integer(line[0, 5])
 922             label1 = line[5, 6].strip
 923             desc = line[11, 30].strip
 924             occ = line[41, 11].strip
 925             comp = line[52, 1000].strip
 926             desc =~ /\s*([-A-Za-z0-9]+)(,\s*(.*$))?/
 927             desc1 = $1
 928             desc2 = ($3 || "")
 929             if desc2 =~ /^(.*)*\(NB\)\s*$/ && label1 == ""
 930               label1 = "(NB)"
 931               desc2 = $1.strip
 932             end
 933             atoms = desc1.scan(/[A-Za-z]+(\d+)/)   # "C1-H3" -> [["1"], ["3"]]
 934             atoms = atoms.map { |a| Integer(a[0]) }  # [1, 3]
 935             hybrids_a = comp.scan(/h(\d+)@[A-Za-z]+(\d+)/)  #  "h8@C1...h13@H3" -> "[["8", "1"], ["13", "3"]]
 936             hybrids = []
 937             hybrids_a.each { |a|
 938               i = atoms.find_index(Integer(a[1]))
 939               if i != nil
 940                 hybrids[i] = Integer(a[0])
 941               end
 942             } # [8, 13]
 943             #  like ["(BD)", [1, 3], "Io = 0.2237", occ, [8, 13]]
 944             #  1, 3 are the atom indices (1-based)
 945             #  8, 13 are the number of hybrid orbitals (1-based)
 946             h[key][num - 1] = [label1, atoms, desc2, Float(occ), hybrids]
 947           end
 948           h[key + "_L"] = []
 949           if key == "CLPO"
 950             #  Also register labels of "LHO"
 951             h["LHO_L"] = [""] * nao_num
 952           end
 953           nao_num.times { |i|
 954             val = h[key][i]
 955             if val == nil
 956               label = ""  #  The labels for Rydberg orbitals may be replaced later
 957             else
 958               aname1 = self.atoms[val[1][0] - 1].name rescue aname1 = ""
 959               aname2 = self.atoms[val[1][1] - 1].name rescue aname2 = ""
 960               if aname2 == ""
 961                 label = "#{aname1} #{val[0]}"
 962               else
 963                 label = "#{aname1}(#{aname2}) #{val[0]}"
 964               end
 965             end
 966             h[key + "_L"][i] = label
 967             if key == "CLPO" && val != nil && val[0] != "(NB)"
 968               hybrids = val[4]
 969               kind = (val[0] == "(BD)" ? "(val)" : "(lp)")
 970               if aname2 == ""
 971                 label = "#{aname1} #{kind}"
 972               else
 973                 label = "#{aname1}(#{aname2}) #{kind}"
 974               end
 975               h["LHO_L"][hybrids[0] - 1] = label
 976               if hybrids[1] != nil
 977                 #  aname2 should be non-empty
 978                 label = "#{aname2}(#{aname1}) #{kind}"
 979                 h["LHO_L"][hybrids[1] - 1] = label
 980               end
 981             end
 982           }
 983         elsif line =~ /^ -NAO_Molden_File: (\S*)/
 984           mfiles["NAO"] = $1
 985         elsif line =~ /^ -LHO_Molden_File: (\S*)/
 986           mfiles["LHO"] = $1
 987         elsif line =~ /^ -CLPO_Molden_File: (\S*)/
 988           mfiles["CLPO"] = $1
 989         elsif line =~ /^ -PNAO_Molden_File: (\S*)/
 990           mfiles["PNAO"] = $1
 991         elsif line =~ /^ -AHO_Molden_File: (\S*)/
 992           mfiles["AHO"] = $1
 993         elsif line =~ /^ -LPO_Molden_File: (\S*)/
 994           mfiles["LPO"] = $1
 995         end
 996       end
 997       fp.close
 998       #  Read molden files
 999       mfiles.each { |key, value|
1000         fp = Kernel.open(value, "rt") rescue fp = nil
1001         if fp
1002           print("Importing #{value}.\n")
1003           res = sub_load_molden(fp, key)
1004           if res
1005             #  Some kind of orbital based on AO
1006             h["AO/#{key}"] = LAMatrix.new(res[:mo])
1007           end
1008           fp.close
1009           if key == "CLPO" || key == "LPO" || key == "LHO"
1010             #  Set the label of Rydberg orbitals if possible
1011             if h[key + "_L"] != nil
1012               a = h["AO/#{key}"]
1013               nao_num.times { |i|
1014                 label = h[key + "_L"][i]
1015                 if label == ""
1016                   max_idx = nil
1017                   max_val = -1.0
1018                   nao_infos.each_with_index { |inf, atom_index|
1019                     atomic_contrib = 0.0
1020                     inf.each { |k, v| # k is "s", "px" etc, v is array of [nao_num, occupancy]
1021                       #  Sum for all naos belonging to this atom
1022                       v.each { |num_occ|
1023                         atomic_contrib += a[i, num_occ[0] - 1] ** 2
1024                       }
1025                     }
1026                     if atomic_contrib > max_val
1027                       max_val = atomic_contrib
1028                       max_idx = atom_index
1029                     end
1030                   }
1031                   label = self.atoms[max_idx].name + " (ry)"
1032                   h[key + "_L"][i] = label
1033                 end
1034               }
1035             end
1036           end
1037         end
1038       }
1039       @nbo = h
1040       if @nbo["AO/NAO"] && @nbo["AO/LHO"] && @nbo["AO/PNAO"]
1041         #  Generate PLHO from PNAO, NAO, LHO
1042         #  This protocol was suggested by the JANPA author in a private commnunication.
1043         begin
1044           nao2lho = @nbo["AO/NAO"].inverse * @nbo["AO/LHO"]
1045           nao2pnao = @nbo["AO/NAO"].inverse * @nbo["AO/PNAO"]
1046           sign = LAMatrix.diagonal((0...nao2pnao.column_size).map { |i| (nao2pnao[i, i] < 0 ? -1 : 1)})
1047           @nbo["AO/PLHO"] = @nbo["AO/PNAO"] * sign * nao2lho
1048         rescue
1049           @nbo["AO/PLHO"] = nil
1050         end
1051       end
1052       return true
1053     rescue => e
1054       $stderr.write(e.message + "\n")
1055       $stderr.write(e.backtrace.inspect + "\n")
1056     end
1057   end
1058
1059   def loadout(filename)
1060   retval = false
1061   fp = open(filename, "rb")
1062   @lineno = 0
1063   begin
1064     while s = fp.gets
1065       @lineno += 1
1066       if s =~ /Gaussian/
1067         retval = sub_load_gaussian_log(fp)
1068         break
1069       elsif s =~ /GAMESS/
1070         retval = sub_load_gamess_log(fp)
1071         break
1072       elsif s =~ /Psi4/
1073         retval = sub_load_psi4_log(fp)
1074         if retval
1075           #  If .molden file exists, then try to read it
1076           namepath = filename.gsub(/\.\w*$/, "")
1077           mname = "#{namepath}.molden"
1078           if File.exists?(mname)
1079             fp2 = open(mname, "rb")
1080             if fp2
1081               flag = sub_load_molden(fp2)
1082               fp2.close
1083               status = (flag ? 0 : -1)
1084             end
1085           end
1086           if File.exists?("#{namepath}.janpa.log")
1087             flag = sub_load_janpa_log(namepath)
1088             status = (flag ? 0 : -1)
1089           end
1090         end
1091         break
1092       end
1093     end
1094   rescue
1095     hide_progress_panel
1096     raise
1097   end
1098         fp.close
1099         return retval
1100   end
1101
1102   alias :loadlog :loadout
1103
1104   def loadxyz(filename)
1105         fp = open(filename, "rb")
1106         n = 0
1107         coords = []
1108         names = []
1109         cell = nil
1110         while 1
1111           line = fp.gets
1112           if line == nil
1113                 fp.close
1114                 break
1115           end
1116           line.chomp
1117           toks = line.split
1118           if coords.length == 0
1119             #  Allow "number of atoms" line or "number of atoms and crystallographic cell parameter"
1120                 #  (Chem3D xyz format)
1121                 next if toks.length == 1
1122                 if toks.length == 7
1123                   cell = toks[1..6].map { |s| Float(s.sub(/\(\d+\)/, "")) }  #  Remove (xx) and convert to float
1124                   next
1125                 end
1126           end
1127           name, x, y, z = line.split
1128           next if z == nil
1129           x = Float(x.sub(/\(\d+\)/, ""))
1130           y = Float(y.sub(/\(\d+\)/, ""))
1131           z = Float(z.sub(/\(\d+\)/, ""))
1132           r = Vector3D[x, y, z]
1133           coords.push(r)
1134           names.push(name)
1135           n += 1
1136         end
1137         celltr = nil
1138         if cell
1139           self.cell = cell
1140           celltr = self.cell_transform
1141         end
1142         names.each_index { |i|
1143           ap = add_atom(names[i])
1144           names[i] =~ /^([A-Za-z]{1,2})/
1145           element = $1.capitalize
1146           ap.element = element
1147           ap.atom_type = element
1148           if celltr
1149             ap.r = celltr * coords[i]
1150           else
1151             ap.r = coords[i]
1152           end
1153         }
1154         guess_bonds
1155         #  Find bonds
1156 #       atoms.each { |ap|
1157 #         j = ap.index
1158 #         (j + 1 ... natoms).each { |k|
1159 #               if calc_bond(j, k) < 1.7
1160 #               #  create_bond(j, k)
1161 #               end
1162 #         }
1163 #       }
1164 #       self.undo_enabled = save_undo_enabled
1165         (n > 0 ? true : false)
1166   end
1167
1168   def savexyz(filename)
1169     open(filename, "wb") { |fp|
1170           fp.printf "%d\n", self.natoms
1171           each_atom { |ap|
1172             fp.printf "%s %.5f %.5f %.5f\n", ap.element, ap.x, ap.y, ap.z
1173           }
1174         }
1175         return true
1176   end
1177
1178   def loadzmat(filename)
1179     self.remove(All)
1180         open(filename, "rb") { |fp|
1181           while (line = fp.gets)
1182             line.chomp!
1183                 a = line.split
1184                 an = Molecule.guess_atomic_number_from_name(a[0])
1185                 elm = Parameter.builtin.elements[an].name
1186                 base1 = a[1].to_i - 1
1187                 base2 = a[3].to_i - 1
1188                 base3 = a[5].to_i - 1
1189                 base1 = nil if base1 < 0
1190                 base2 = nil if base2 < 0
1191                 base3 = nil if base3 < 0
1192                 add_atom(a[0], elm, elm, a[2].to_f, base1, a[4].to_f, base2, a[6].to_f, base3)
1193           end
1194         }
1195         return true
1196   end
1197
1198   def savezmat(filename)
1199   end
1200
1201   def loadcom(filename)
1202 #       save_undo_enabled = self.undo_enabled?
1203 #       self.undo_enabled = false
1204         self.remove(All)
1205         fp = open(filename, "rb")
1206         section = 0
1207         while (line = fp.gets)
1208           line.chomp!
1209           if section == 0
1210             section = 1 if line =~ /^\#/
1211                 next
1212           elsif section == 1 || section == 2
1213             section += 1 if line =~ /^\s*$/
1214                 next
1215           else
1216             #  The first line is skipped (charge and multiplicity)
1217                 while (line = fp.gets)
1218                   line.chomp!
1219                   break if line =~ /^\s*$/
1220                   a = line.split(/\s*[ \t,\/]\s*/)
1221                   r = Vector3D[Float(a[1]), Float(a[2]), Float(a[3])]
1222                   ap = add_atom(a[0])
1223                   a[0] =~ /^([A-Za-z]{1,2})/
1224                   element = $1.capitalize
1225               ap.element = element
1226               ap.atom_type = element
1227               ap.r = r
1228                 end
1229                 break
1230           end
1231         end
1232         fp.close
1233         guess_bonds
1234 #       self.undo_enabled = save_undo_enabled
1235         return true
1236   end
1237
1238   def loadinp(filename)
1239 #       save_undo_enabled = self.undo_enabled?
1240 #       self.undo_enabled = false
1241         self.remove(All)
1242         fp = open(filename, "rb")
1243         section = 0
1244         has_basis = false
1245         while (line = fp.gets)
1246           if line =~ /\A \$BASIS/
1247             has_basis = true
1248                 next
1249           end
1250           next if line !~ /\A \$DATA/
1251           line = fp.gets   #  Title line
1252           line = fp.gets   #  Symmetry line
1253           while (line = fp.gets)
1254 #           puts line
1255             line.chomp!
1256                 break if line =~ /\$END/
1257                 a = line.split
1258                 ap = add_atom(a[0])
1259                 ap.atomic_number = Integer(a[1])
1260                 ap.atom_type = ap.element
1261                 r = Vector3D[Float(a[2]), Float(a[3]), Float(a[4])]
1262                 ap.r = r;
1263                 if !has_basis
1264                   #  Skip until one blank line is detected
1265                   while (line = fp.gets) && line =~ /\S/
1266                   end
1267                 end
1268       end
1269           break
1270         end
1271         fp.close
1272         guess_bonds
1273 #       self.undo_enabled = save_undo_enabled
1274         return true
1275   end
1276
1277   def saveinp(filename)
1278     if natoms == 0
1279       raise MolbyError, "cannot save GAMESS input; the molecule is empty"
1280     end
1281     fp = open(filename, "wb")
1282         now = Time.now.to_s
1283         fp.print <<end_of_header
1284 !  GAMESS input
1285 !  Generated by Molby at #{now}
1286  $CONTRL COORD=UNIQUE EXETYP=RUN ICHARG=0
1287          ICUT=20 INTTYP=HONDO ITOL=30
1288          MAXIT=200 MOLPLT=.T. MPLEVL=0
1289          MULT=1 QMTTOL=1e-08 RUNTYP=OPTIMIZE
1290          SCFTYP=RHF UNITS=ANGS                  $END
1291  $SCF    CONV=1.0E-06 DIRSCF=.T.                $END
1292  $STATPT NSTEP=400 OPTTOL=1.0E-06               $END
1293  $SYSTEM MEMDDI=0 MWORDS=16 TIMLIM=50000        $END
1294  $BASIS  GBASIS=N31 NDFUNC=1 NGAUSS=6           $END
1295  $GUESS  GUESS=HUCKEL                           $END
1296 !
1297  $DATA
1298  #{name}
1299  C1
1300 end_of_header
1301         each_atom { |ap|
1302                 next if ap.atomic_number == 0
1303                 fp.printf " %-6s %4d %10.6f %10.6f %10.6f\n", ap.name, ap.atomic_number, ap.r.x, ap.r.y, ap.r.z
1304         }
1305         fp.print " $END\n"
1306         fp.close
1307         return true
1308   end
1309
1310   def savecom(filename)
1311     if natoms == 0
1312       raise MolbyError, "cannot save Gaussian input; the molecule is empty"
1313     end
1314     fp = open(filename, "wb")
1315         base = File.basename(filename, ".*")
1316         fp.print <<end_of_header
1317 %Chk=#{base}.chk
1318 \# PM3 Opt
1319
1320  #{name}; created by Molby at #{Time.now.to_s}
1321
1322  0 1
1323 end_of_header
1324         each_atom { |ap|
1325             next if ap.atomic_number == 0
1326                 fp.printf "%-6s %10.6f %10.6f %10.6f\n", ap.element, ap.r.x, ap.r.y, ap.r.z
1327         }
1328         fp.print "\n"
1329         fp.close
1330         return true
1331   end
1332
1333   alias :loadgjf :loadcom
1334   alias :savegjf :savecom
1335
1336   def loadcif(filename)
1337     mol = self
1338     def getciftoken(fp)
1339           while @tokens.length == 0
1340             line = fp.gets
1341             return nil if !line
1342                 if line[0] == ?;
1343                   s = line
1344                   while line = fp.gets
1345                     break if line[0] == ?;
1346                     s += line
1347                   end
1348                   return s if !line
1349                   s += ";"
1350                   @tokens.push(s)
1351                   line = line[1...line.length]
1352                 end
1353             line.strip!
1354             line.scan(/'[^\']*'|"[^\"]*"|[^#\s]+|#.*/) do |s|
1355               next if s[0] == ?#
1356                   if s =~ /^data_|loop_|global_|save_|stop_/i
1357                     s = "#" + s    #  Label for reserved words
1358                   end
1359                   @tokens.push(s)
1360             end
1361           end
1362           return @tokens.shift
1363         end
1364         def float_strip_rms(str)
1365           str =~ /^(-?)(\d*)(\.(\d*))?(\((\d+)\))?$/
1366           sgn, i, frac, rms = $1, $2, $4, $6
1367           i = i.to_f
1368           if frac
1369                 base = 0.1 ** frac.length
1370                 i = i + frac.to_f * base
1371           else
1372             base = 1.0
1373           end
1374           if rms
1375             rms = rms.to_f * base
1376           else
1377             rms = 0.0
1378           end
1379           if sgn == "-"
1380             i = -i
1381           end
1382           return i, rms
1383         end
1384         def parse_symmetry_operation(str)
1385           if str == "."
1386             sym = nil
1387           elsif (str =~ /(\d+)_(\d)(\d)(\d)/) || (str =~ /(\d+) +(\d)(\d)(\d)/)
1388             sym = [Integer($1) - 1, Integer($2) - 5, Integer($3) - 5, Integer($4) - 5]
1389           elsif (str =~ /^(\d+)$/)
1390             sym = [Integer($1) - 1, 0, 0, 0]
1391           end
1392           if sym && (sym[0] == 0 && sym[1] == 0 && sym[2] == 0 && sym[3] == 0)
1393             sym = nil
1394           end
1395           sym
1396         end
1397         def find_atom_by_name(mol, name)
1398           name = name.delete(" ()")
1399           ap = mol.atoms[name] rescue ap = nil
1400           return ap
1401         end
1402         selfname = self.name
1403         fp = open(filename, "rb")
1404         data_identifier = nil
1405         @tokens = []
1406         count_up = 1
1407         while true
1408           warn_message = ""
1409           verbose = nil
1410           bond_defined = false
1411           special_positions = []
1412           mol.remove(All)
1413           cell = []
1414           cell_trans = cell_trans_inv = Transform.identity
1415           token = getciftoken(fp)
1416           pardigits_re = /\(\d+\)/
1417           calculated_atoms = []
1418           while token != nil
1419             if token =~ /^\#data_/i
1420                   if data_identifier == nil || mol.natoms == 0
1421                     #  First block or no atoms yet
1422             #  Continue processing of this molecule
1423                     data_identifier = token
1424                         token = getciftoken(fp)
1425                         next
1426                   else
1427                     #  Description of another molecule begins here
1428                         data_identifier = token
1429                         break
1430                   end
1431             elsif token =~ /^_cell/
1432                   val = getciftoken(fp)
1433                   if token == "_cell_length_a"
1434                     cell[0], cell[6] = float_strip_rms(val)
1435                   elsif token == "_cell_length_b"
1436                     cell[1], cell[7] = float_strip_rms(val)
1437                   elsif token == "_cell_length_c"
1438                     cell[2], cell[8] = float_strip_rms(val)
1439                   elsif token == "_cell_angle_alpha"
1440                     cell[3], cell[9] = float_strip_rms(val)
1441                   elsif token == "_cell_angle_beta"
1442                     cell[4], cell[10] = float_strip_rms(val)
1443                   elsif token == "_cell_angle_gamma"
1444                     cell[5], cell[11] = float_strip_rms(val)
1445                   end
1446                   if cell.length == 12 && cell.all?
1447                     mol.cell = cell
1448             puts "Unit cell is set to #{mol.cell.inspect}." if verbose
1449                     cell = []
1450                     cell_trans = mol.cell_transform
1451                     cell_trans_inv = cell_trans.inverse
1452                   end
1453                   token = getciftoken(fp)
1454                   next
1455         elsif token.casecmp("#loop_") == 0
1456               labels = []
1457                   while (token = getciftoken(fp)) && token[0] == ?_
1458                     labels.push(token)
1459                   end
1460                   if labels[0] =~ /symmetry_equiv_pos|space_group_symop|atom_site_label|atom_site_aniso_label|geom_bond/
1461                     hlabel = Hash.new(-10000000)
1462                     labels.each_with_index { |lb, i|
1463                           hlabel[lb] = i
1464                     }
1465                     data = []
1466                     n = labels.length
1467                     a = []
1468                     while true
1469                           break if token == nil || token[0] == ?_ || token[0] == ?#
1470                           a.push(token)
1471                           if a.length == n
1472                             data.push(a)
1473                             a = []
1474                           end
1475                           token = getciftoken(fp)
1476                     end
1477                     if labels[0] =~ /^_symmetry_equiv_pos/ || labels[0] =~ /^_space_group_symop/
1478                       data.each { |d|
1479                             symstr = d[hlabel["_symmetry_equiv_pos_as_xyz"]] || d[hlabel["_space_group_symop_operation_xyz"]]
1480                             symstr.delete("\"\'")
1481                             exps = symstr.split(/,/)
1482                             sym = [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]
1483                             exps.each_with_index { |s, i|
1484                               terms = s.scan(/([-+]?)(([.0-9]+)(\/([0-9]+))?([xXyYzZ])?|([xXyYzZ]))/)
1485                                   terms.each { |a|
1486                                     #  a[0]: sign, a[2]: numerator, a[4]: denometer
1487                                     if a[4] != nil
1488                                       #  The number part is a[2]/a[4]
1489                                       num = Float(a[2])/Float(a[4])
1490                                     elsif a[2] != nil
1491                                       #  The number part is either integer or a floating point
1492                                       num = Float(a[2])
1493                                     else
1494                                       num = 1.0
1495                                     end
1496                                     num = -num if a[0][0] == ?-
1497                                     xyz = (a[5] || a[6])
1498                                     if xyz == "x" || xyz == "X"
1499                                       sym[i] = num
1500                                     elsif xyz == "y" || xyz == "Y"
1501                                       sym[i + 3] = num
1502                                     elsif xyz == "z" || xyz == "Z"
1503                                       sym[i + 6] = num
1504                                     else
1505                                       sym[9 + i] = num
1506                                     end
1507                                   }
1508                             }
1509                             puts "symmetry operation #{sym.inspect}" if verbose
1510                             mol.add_symmetry(Transform.new(sym))
1511                           }
1512                           puts "#{mol.nsymmetries} symmetry operations are added" if verbose
1513                     elsif labels[0] =~ /^_atom_site_label/
1514                           #  Create atoms
1515                           data.each { |d|
1516                             name = d[hlabel["_atom_site_label"]]
1517                             elem = d[hlabel["_atom_site_type_symbol"]]
1518                             fx = d[hlabel["_atom_site_fract_x"]]
1519                             fy = d[hlabel["_atom_site_fract_y"]]
1520                             fz = d[hlabel["_atom_site_fract_z"]]
1521                             uiso = d[hlabel["_atom_site_U_iso_or_equiv"]]
1522                             biso = d[hlabel["_atom_site_B_iso_or_equiv"]]
1523                             occ = d[hlabel["_atom_site_occupancy"]]
1524                             calc = d[hlabel["_atom_site_calc_flag"]]
1525                             name = name.delete(" ()")
1526                             if elem == nil || elem == ""
1527                               if name =~ /[A-Za-z]{1,2}/
1528                                     elem = $&.capitalize
1529                                   else
1530                                     elem = "Du"
1531                                   end
1532                             end
1533                             ap = mol.add_atom(name, elem, elem)
1534                             ap.fract_x, ap.sigma_x = float_strip_rms(fx)
1535                             ap.fract_y, ap.sigma_y = float_strip_rms(fy)
1536                             ap.fract_z, ap.sigma_z = float_strip_rms(fz)
1537                             if biso
1538                               ap.temp_factor, sig = float_strip_rms(biso)
1539                             elsif uiso
1540                               ap.temp_factor, sig = float_strip_rms(uiso)
1541                                   ap.temp_factor *= 78.9568352087149          #  8*pi*pi
1542                             end
1543                             ap.occupancy, sig = float_strip_rms(occ)
1544                             if calc == "c" || calc == "calc"
1545                               calculated_atoms.push(ap.index)
1546                         end
1547                             #  Guess special positions
1548                             (1...mol.nsymmetries).each { |isym|
1549                               sr = ap.fract_r
1550                               sr = (mol.transform_for_symop(isym) * sr) - sr;
1551                                   nx = (sr.x + 0.5).floor
1552                                   ny = (sr.y + 0.5).floor
1553                                   nz = (sr.z + 0.5).floor
1554                                   if (Vector3D[sr.x - nx, sr.y - ny, sr.z - nz].length2 < 1e-6)
1555                                     #  [isym, -nx, -ny, -nz] transforms this atom to itself
1556                                     #  The following line is equivalent to:
1557                                     #    if special_positions[ap.index] == nil; special_positions[ap.index] = []; end;
1558                                     #    special_positions[ap.index].push(...)
1559                                     (special_positions[ap.index] ||= []).push([isym, -nx, -ny, -nz])
1560                                   end
1561                             }
1562                             if verbose && special_positions[ap.index]
1563                               puts "#{name} is on the special position: #{special_positions[ap.index].inspect}"
1564                             end
1565                           }
1566                           puts "#{mol.natoms} atoms are created." if verbose
1567                     elsif labels[0] =~ /^_atom_site_aniso_label/
1568                       #  Set anisotropic parameters
1569                           c = 0
1570                           data.each { |d|
1571                             name = d[hlabel["_atom_site_aniso_label"]]
1572                             ap = find_atom_by_name(mol, name)
1573                             next if !ap
1574                             u11 = d[hlabel["_atom_site_aniso_U_11"]]
1575                             if u11
1576                               usig = []
1577                               u11, usig[0] = float_strip_rms(u11)
1578                               u22, usig[1] = float_strip_rms(d[hlabel["_atom_site_aniso_U_22"]])
1579                               u33, usig[2] = float_strip_rms(d[hlabel["_atom_site_aniso_U_33"]])
1580                               u12, usig[3] = float_strip_rms(d[hlabel["_atom_site_aniso_U_12"]])
1581                               u13, usig[4] = float_strip_rms(d[hlabel["_atom_site_aniso_U_13"]])
1582                               u23, usig[5] = float_strip_rms(d[hlabel["_atom_site_aniso_U_23"]])
1583                               ap.aniso = [u11, u22, u33, u12, u13, u23, 8] + usig
1584                                   c += 1
1585                             end
1586                           }
1587                           puts "#{c} anisotropic parameters are set." if verbose
1588                     elsif labels[0] =~ /^_geom_bond/
1589                       #  Create bonds
1590                           exbonds = []
1591                           data.each { |d|
1592                             n1 = d[hlabel["_geom_bond_atom_site_label_1"]]
1593                             n2 = d[hlabel["_geom_bond_atom_site_label_2"]]
1594                             sym1 = d[hlabel["_geom_bond_site_symmetry_1"]] || "."
1595                             sym2 = d[hlabel["_geom_bond_site_symmetry_2"]] || "."
1596                             n1 = find_atom_by_name(mol, n1)
1597                             n2 = find_atom_by_name(mol, n2)
1598                             next if n1 == nil || n2 == nil
1599                         n1 = n1.index
1600                             n2 = n2.index
1601                             sym1 = parse_symmetry_operation(sym1)
1602                             sym2 = parse_symmetry_operation(sym2)
1603                             if sym1 || sym2
1604                               exbonds.push([n1, n2, sym1, sym2])
1605                             else
1606                               mol.create_bond(n1, n2)
1607                             end
1608                             tr1 = (sym1 ? mol.transform_for_symop(sym1) : Transform.identity)
1609                             tr2 = (sym2 ? mol.transform_for_symop(sym2) : Transform.identity)
1610                             if special_positions[n1]
1611                                   #  Add extra bonds for equivalent positions of n1
1612                                   special_positions[n1].each { |symop|
1613                                     sym2x = mol.symop_for_transform(tr1 * mol.transform_for_symop(symop) * tr1.inverse * tr2)
1614                                     exbonds.push([n1, n2, sym1, sym2x])
1615                                   }
1616                             end
1617                             if special_positions[n2]
1618                                   #  Add extra bonds n2-n1.symop, where symop transforms n2 to self
1619                                   tr = (sym1 ? mol.transform_for_symop(sym1) : Transform.identity)
1620                                   special_positions[n2].each { |symop|
1621                                     sym1x = mol.symop_for_transform(tr2 * mol.transform_for_symop(symop) * tr2.inverse * tr1)
1622                                     exbonds.push([n2, n1, sym2, sym1x])
1623                                   }
1624                             end
1625                       }
1626               if mol.nbonds > 0
1627                 bond_defined = true
1628               end
1629                           puts "#{mol.nbonds} bonds are created." if verbose
1630                           if calculated_atoms.length > 0
1631                             #  Guess bonds for calculated hydrogen atoms
1632                             n1 = 0
1633                             calculated_atoms.each { |ai|
1634                               if mol.atoms[ai].connects.length == 0
1635                                     as = mol.find_close_atoms(ai)
1636                                     as.each { |aj|
1637                                       mol.create_bond(ai, aj)
1638                                           n1 += 1
1639                                     }
1640                                   end
1641                             }
1642                             puts "#{n1} bonds are guessed." if verbose
1643                           end
1644                           if exbonds.length > 0
1645                             h = Dialog.run("CIF Import: Symmetry Expansion") {
1646                               layout(1,
1647                                     item(:text, :title=>"There are bonds including symmetry related atoms.\nWhat do you want to do?"),
1648                                     item(:radio, :title=>"Expand only atoms that are included in those extra bonds.", :tag=>"atoms_only"),
1649                                     item(:radio, :title=>"Expand fragments having atoms included in the extra bonds.", :tag=>"fragment", :value=>1),
1650                                     item(:radio, :title=>"Ignore these extra bonds.", :tag=>"ignore")
1651                                   )
1652                                   radio_group("atoms_only", "fragment", "ignore")
1653                             }
1654                             if h[:status] == 0 && h["ignore"] == 0
1655                               atoms_only = (h["atoms_only"] != 0)
1656                                   if !atoms_only
1657                                     fragments = []
1658                                     mol.each_fragment { |f| fragments.push(f) }
1659                                   end
1660                                   debug = nil
1661                                   exbonds.each { |ex|
1662                                     if debug; puts "extra bond #{ex[0]}(#{ex[2].inspect}) - #{ex[1]}(#{ex[3].inspect})"; end
1663                                     ex0 = ex.dup
1664                                     (2..3).each { |i|
1665                                       symop = ex[i]
1666                                           if symop == nil
1667                                             ex[i + 2] = ex[i - 2]
1668                                           else
1669                                             if debug; puts "  symop = #{symop.inspect}"; end
1670                                             #  Expand the atom or the fragment including the atom
1671                                             if atoms_only
1672                                                   ig = IntGroup[ex[i - 2]]
1673                                                   idx = 0
1674                                             else
1675                                                   ig = fragments.find { |f| f.include?(ex[i - 2]) }
1676                                                   ig.each_with_index { |n, ii| if n == ex[i - 2]; idx = ii; break; end }
1677                                             end
1678                                             symop[4] = ex[i - 2]  #  Base atom
1679                                             if debug; puts "  expanding #{ig} by #{symop.inspect}"; end
1680                                             a = mol.expand_by_symmetry(ig, symop[0], symop[1], symop[2], symop[3])
1681                                             ex[i + 2] = a[idx]   #  Index of the expanded atom
1682                                           end
1683                                     }
1684                                     if ex[4] && ex[5] && ex[4] != ex[5]
1685                                       if debug; puts "  creating bond #{ex[4]} - #{ex[5]}"; end
1686                                       mol.create_bond(ex[4], ex[5])
1687                                     end
1688                                   }
1689                             end
1690                           end
1691                           puts "#{mol.nbonds} bonds are created." if verbose
1692                     end
1693                     next
1694                   else
1695                   #  puts "Loop beginning with #{labels[0]} is skipped"
1696                   end
1697             else
1698               #  Skip this token
1699                   token = getciftoken(fp)
1700             end
1701             #  Skip tokens until next tag or reserved word is detected
1702             while token != nil && token[0] != ?_ && token[0] != ?#
1703                   token = getciftoken(fp)
1704             end
1705             next
1706           end
1707       if !bond_defined
1708                 mol.guess_bonds
1709           end
1710           if token != nil && token == data_identifier
1711             #  Process next molecule: open a new molecule and start adding atom on that
1712                 mol = Molecule.new
1713                 count_up += 1
1714                 (@aux_mols ||= []).push(mol)
1715                 next
1716           end
1717           break
1718         end
1719         fp.close
1720 #       self.undo_enabled = save_undo_enabled
1721         return true
1722   end
1723
1724   def dump(group = nil)
1725     def quote(str)
1726           if str == ""
1727             str = "\"\""
1728           else
1729             str = str.gsub(/%/, "%%")
1730                 str.gsub!(/ /, "%20")
1731                 str.gsub!(/\t/, "%09")
1732           end
1733           str
1734         end
1735         group = atom_group(group ? group : 0...natoms)
1736         s = ""
1737         group.each { |i|
1738           ap = atoms[i]
1739           s += sprintf("%4d %-7s %-4s %-4s %-2s %7.3f %7.3f %7.3f %6.3f [%s]\n",
1740                 ap.index, sprintf("%3s.%d", ap.res_name, ap.res_seq),
1741                 quote(ap.name), quote(ap.atom_type), quote(ap.element),
1742                 ap.r.x, ap.r.y, ap.r.z, ap.charge,
1743                 ap.connects.join(","))
1744         }
1745         print s
1746   end
1747
1748   def from_dump(arg)
1749     if natoms > 0
1750           raise "Molecule must be empty"
1751         end
1752     format = "index residue name atom_type element rx ry rz charge connects"
1753         keys = []
1754         resAtoms = Hash.new
1755         newBonds = []
1756         #  arg can be either a String or an array of String.
1757         #  Iterates for each line in the string or each member of the array.
1758         if arg.is_a?(String)
1759           arg = arg.split("\n")
1760         end
1761     arg.each { |line|
1762           if line =~ /^\#/
1763             format = line[1..-1]
1764                 keys = []
1765           end
1766           if keys.length == 0
1767             keys = format.split(" ").collect { |key| key.to_sym }
1768           end
1769           values = line.chomp.split(" ")
1770           next if values == nil || values.length == 0
1771           ap = create_atom(sprintf("X%03d", natoms))
1772           r = Vector3D[0, 0, 0]
1773           keys.each_index { |i|
1774             break if (value = values[i]) == nil
1775                 if value == "\"\""
1776                   value = ""
1777                 else
1778                   value.gsub(/%09/, "\t")
1779                   value.gsub(/%20/, " ")
1780                   value.gsub(/%%/, "%")
1781                 end
1782                 key = keys[i]
1783                 if key == :residue
1784                   if resAtoms[value] == nil
1785                     resAtoms[value] = []
1786                   end
1787                   resAtoms[value].push(ap.index)
1788                 elsif key == :rx
1789                   r.x = value.to_f
1790                 elsif key == :ry
1791                   r.y = value.to_f
1792                 elsif key == :rz
1793                   r.z = value.to_f
1794                 elsif key == :connects
1795                   value.scan(/\d+/).each { |i|
1796                     i = i.to_i
1797                     if ap.index < i
1798                           newBonds.push(ap.index)
1799                           newBonds.push(i)
1800                         end
1801                   }
1802                 elsif key == :index
1803                   next
1804                 else
1805                   ap.set_attr(key, value)
1806                 end
1807           }
1808           ap.r = r
1809         }
1810         resAtoms.each_key { |key|
1811           assign_residue(atom_group(resAtoms[key]), key)
1812         }
1813         create_bond(*newBonds)
1814         self
1815   end
1816
1817   #  Plug-in for loading mbsf
1818   def loadmbsf_plugin(s, lineno)
1819     ""
1820   end
1821
1822   #  Plug-in for saving mbsf
1823   def savembsf_plugin
1824     ""
1825   end
1826
1827 end