       1 #!/usr/bin/perl -w
       2 #
       3 # $RCSfile: InfoPeriodicTableElements.pl,v $
       4 # $Date: 2015/02/28 20:46:20 $
       5 # $Revision: 1.28 $
       6 #
       7 # Author: Manish Sud <msud@san.rr.com>
       8 #
       9 # Copyright (C) 2015 Manish Sud. All rights reserved.
      10 #
      11 # This file is part of MayaChemTools.
      12 #
      13 # MayaChemTools is free software; you can redistribute it and/or modify it under
      14 # the terms of the GNU Lesser General Public License as published by the Free
      15 # Software Foundation; either version 3 of the License, or (at your option) any
      16 # later version.
      17 #
      18 # MayaChemTools is distributed in the hope that it will be useful, but without
      19 # any warranty; without even the implied warranty of merchantability of fitness
      20 # for a particular purpose.  See the GNU Lesser General Public License for more
      21 # details.
      22 #
      23 # You should have received a copy of the GNU Lesser General Public License
      24 # along with MayaChemTools; if not, see <http://www.gnu.org/licenses/> or
      25 # write to the Free Software Foundation Inc., 59 Temple Place, Suite 330,
      26 # Boston, MA, 02111-1307, USA.
      27 #
      28
      29 use strict;
      30 use FindBin; use lib "$FindBin::Bin/../lib";
      31 use Getopt::Long;
      32 use File::Basename;
      33 use Text::ParseWords;
      34 use Benchmark;
      35 use FileUtil;
      36 use TextUtil;
      37 use PeriodicTable;
      38
      39 my($ScriptName, %Options, $StartTime, $EndTime, $TotalTime);
      40
      41 # Autoflush STDOUT
      42 $| = 1;
      43
      44 # Starting message...
      45 $ScriptName = basename($0);
      46 print "\n$ScriptName: Starting...\n\n";
      47 $StartTime = new Benchmark;
      48
      49 # Get the options and setup script...
      50 SetupScriptUsage();
      51 if ($Options{help}) {
      52   die GetUsageFromPod("$FindBin::Bin/$ScriptName");
      53 }
      54
      55 print "Processing options...\n";
      56 my(%OptionsInfo);
      57 ProcessOptions();
      58
      59 ListElementProperties();
      60 print "\n$ScriptName:Done...\n\n";
      61
      62 $EndTime = new Benchmark;
      63 $TotalTime = timediff ($EndTime, $StartTime);
      64 print "Total time: ", timestr($TotalTime), "\n";
      65
      66 ###############################################################################
      67
      68 # List atomic properties for elements...
      69 sub ListElementProperties {
      70   my($ElementID, $ElementDataRef, $PropertyName, $PropertyValue, $PropertyUnits, $PropertyUnitsRef, @PropertyLabels, @PropertyValues);
      71
      72   print "Listing information for periodic table element(s)...\n";
      73
      74   if ($OptionsInfo{FileOutput}) {
      75     print "Generating file $OptionsInfo{OutFileName}...\n";
      76     open OUTFILE, ">$OptionsInfo{OutFileName}" or die "Couldn't open $OptionsInfo{OutFileName}: $!\n";
      77   }
      78
      79   # Setup property labels...
      80   @PropertyLabels = ();
      81   $PropertyUnitsRef = PeriodicTable::GetElementPropertiesNamesAndUnits();
      82   for $PropertyName (@{$OptionsInfo{SpecifiedProperies}}) {
      83     $PropertyUnits = (exists $PropertyUnitsRef->{$PropertyName}) ? $PropertyUnitsRef->{$PropertyName} : '';
      84     if ($PropertyName =~ /^NaturalIsotopeData$/i) {
      85       push @PropertyLabels, qw(MassNumber: RelativeAtomicMass: NaturalAbundance:);
      86     }
      87     else {
      88       push @PropertyLabels, ($PropertyUnits ? "$PropertyName ($PropertyUnits):" : "$PropertyName:");
      89     }
      90   }
      91
      92   if ($OptionsInfo{ElementRowsOutput}) {
      93     ListHeaderRowData(\@PropertyLabels);
      94   }
      95
      96   # Go over specified properties...
      97   for $ElementID (@{$OptionsInfo{SpecifiedElementIDs}}) {
      98     $ElementDataRef = PeriodicTable::GetElementPropertiesData($ElementID);
      99
     100     if (!$OptionsInfo{ElementRowsOutput}) {
     101       if ($OptionsInfo{FileOutput}) {
     102         print OUTFILE "\nListing atomic properties for element $ElementID...\n\n";
     103       }
     104       else {
     105         print "\nListing atomic properties for element $ElementID...\n\n";
     106       }
     107     }
     108
     109     # Collect data..
     110     @PropertyValues = ();
     111     for $PropertyName (@{$OptionsInfo{SpecifiedProperies}}) {
     112       if ($PropertyName =~ /^NaturalIsotopeData$/i) {
     113         push @PropertyValues, SetupIsotopeData($ElementID);
     114       }
     115       else {
     116         $PropertyValue = $ElementDataRef->{$PropertyName};
     117         if (IsFloat($PropertyValue)) {
     118           $PropertyValue = sprintf("%.$OptionsInfo{Precision}f", $PropertyValue) + 0;
     119         }
     120         push @PropertyValues, $PropertyValue;
     121       }
     122     }
     123     # List data...
     124     ListElementData(\@PropertyLabels, \@PropertyValues);
     125   }
     126   if ($OptionsInfo{FileOutput}) {
     127     close OUTFILE;
     128   }
     129   print "\n";
     130 }
     131
     132 # List data for an element...
     133 sub ListElementData {
     134   my($DataLabelRef, $DataValueRef) = @_;
     135   my($Index, $Line, $Value);
     136
     137   if ($OptionsInfo{ElementRowsOutput}) {
     138     $Line = '';
     139     # Format data...
     140     if ($OptionsInfo{OutQuote} || $Options{outdelim} !~ /^comma$/i) {
     141       $Line = JoinWords($DataValueRef, $OptionsInfo{OutDelim}, $OptionsInfo{OutQuote});
     142     }
     143     else {
     144       # Always quote values containing commas...
     145       $Line = ($DataValueRef->[0] =~ /\,/) ? qq("$DataValueRef->[0]") : $DataValueRef->[0];
     146       for $Index (1 .. $#{$DataValueRef} ) {
     147         $Value = $DataValueRef->[$Index];
     148         if ($Value =~ /\,/) {
     149           $Value = qq("$Value");
     150         }
     151         $Line .= $OptionsInfo{OutDelim} . $Value;
     152       }
     153     }
     154     if ($OptionsInfo{FileOutput}) {
     155       print OUTFILE "$Line\n";
     156     }
     157     else {
     158       print "$Line\n";
     159     }
     160   }
     161   else {
     162     # Format and list data...
     163     $Line = '';
     164     for $Index (0 .. $#{$DataLabelRef} ) {
     165       $Line = $DataLabelRef->[$Index] . ' ' . $DataValueRef->[$Index];
     166       if ($OptionsInfo{FileOutput}) {
     167         print OUTFILE "$Line\n";
     168       }
     169       else {
     170         print "$Line\n";
     171       }
     172     }
     173   }
     174 }
     175
     176 # List data for an element...
     177 sub ListHeaderRowData {
     178   my($DataLabelRef) = @_;
     179   my($Line);
     180
     181   # Format data...
     182   $Line = JoinWords($DataLabelRef, $OptionsInfo{OutDelim}, $OptionsInfo{OutQuote});
     183   $Line =~ s/\://g;
     184   # List data...
     185   if ($OptionsInfo{FileOutput}) {
     186     print OUTFILE "$Line\n";
     187   }
     188   else {
     189     print "$Line\n";
     190   }
     191 }
     192
     193 # Setup isotope data strings...
     194 sub SetupIsotopeData {
     195   my($ElementID) = @_;
     196   my($MassNumber, $RelativeAtomicMass, $NaturalAbundance, $NaturalIsotopeDataRef, @MassNumbers, @RelativeAtomicMasses, @NaturalAbundances);
     197
     198   # Get natural isotope data: MassNumber, RelativeAtomicMass and NaturalAbundance
     199   @MassNumbers = (); @RelativeAtomicMasses = (); @NaturalAbundances = ();
     200   $NaturalIsotopeDataRef = PeriodicTable::GetElementNaturalIsotopesData($ElementID);
     201   for $MassNumber (sort {$a <=> $b} keys %{$NaturalIsotopeDataRef}) {
     202     $RelativeAtomicMass = $NaturalIsotopeDataRef->{$MassNumber}{RelativeAtomicMass};
     203     $NaturalAbundance = $NaturalIsotopeDataRef->{$MassNumber}{NaturalAbundance};
     204     push @MassNumbers, $MassNumber;
     205     $RelativeAtomicMass = ($RelativeAtomicMass > 0) ? (sprintf("%.$OptionsInfo{Precision}f", $RelativeAtomicMass) + 0) : '';
     206     push @RelativeAtomicMasses, $RelativeAtomicMass;
     207     $NaturalAbundance = ($NaturalAbundance > 0) ? (sprintf("%.$OptionsInfo{Precision}f", $NaturalAbundance) + 0) : '';
     208     push @NaturalAbundances, $NaturalAbundance;
     209   }
     210   $MassNumber = JoinWords(\@MassNumbers, ",", 0);
     211   $RelativeAtomicMass = JoinWords(\@RelativeAtomicMasses, ",", 0);
     212   $NaturalAbundance = JoinWords(\@NaturalAbundances, ",", 0);
     213   return ($MassNumber, $RelativeAtomicMass, $NaturalAbundance);
     214 }
     215
     216 # Get propery names from categories...
     217 sub GetPropertyNamesFromCategories {
     218   my($CategoryName) = @_;
     219   my(@PropertyNames);
     220
     221   @PropertyNames = ();
     222   if ($CategoryName =~ /^Basic$/i) {
     223     @PropertyNames = ('AtomicNumber', 'ElementSymbol', 'ElementName', 'AtomicWeight', 'GroundStateConfiguration', 'GroupNumber', 'PeriodNumber', 'FirstIonizationEnergy');
     224   } elsif ($CategoryName =~ /^BasicAndNaturalIsotope$/i) {
     225     # Natural isotope data includes: 'MassNumber', 'RelativeAtomicMass', 'NaturalAbundance'
     226     @PropertyNames = ('AtomicNumber', 'ElementSymbol', 'ElementName', 'AtomicWeight', 'GroundStateConfiguration', 'GroupNumber', 'PeriodNumber', 'FirstIonizationEnergy', 'NaturalIsotopeData');
     227   } elsif ($CategoryName =~ /^NaturalIsotope$/i) {
     228     @PropertyNames = ('AtomicNumber', 'ElementSymbol', 'ElementName', 'NaturalIsotopeData');
     229   }
     230
     231   return @PropertyNames;
     232 }
     233
     234 # Process option values...
     235 sub ProcessOptions {
     236   %OptionsInfo = ();
     237
     238   $OptionsInfo{Mode} = $Options{mode};
     239
     240   $OptionsInfo{OutDelim} = ($Options{outdelim} =~ /^tab$/i ) ? "\t" : (($Options{outdelim} =~ /^semicolon$/i) ? "\;" : "\,");
     241   $OptionsInfo{OutQuote} = ($Options{quote} =~ /^yes$/i) ? 1 : 0;
     242
     243   $OptionsInfo{Overwrite} = defined $Options{overwrite} ? $Options{overwrite} : undef;
     244   $OptionsInfo{OutFileRoot} = defined $Options{root} ? $Options{root} : undef;
     245
     246   $OptionsInfo{Output} = $Options{output};
     247   $OptionsInfo{OutputStyle} = $Options{outputstyle};
     248
     249   $OptionsInfo{ElementRowsOutput} = ($Options{outputstyle} =~ /^ElementRows$/i) ? 1 : 0;
     250   $OptionsInfo{FileOutput} = ($Options{output} =~ /^File$/i) ? 1 : 0;
     251
     252   $OptionsInfo{Precision} = $Options{precision};
     253
     254   my($ElementID, @ElementIDs, @GroupElements, @PeriodElements, %GroupNamesMap);
     255
     256   @{$OptionsInfo{SpecifiedElementIDs}} = ();
     257   if (@ARGV >=1 && ($Options{mode} =~ /^All$/i) ) {
     258     warn "Warning: Ignoring comman line element IDs: Not valid for All value of \"-m --mode\" option...\n";
     259   }
     260
     261   # Set up element IDs except for All mode...
     262   @ElementIDs = ();
     263   %GroupNamesMap = ();
     264
     265   if (@ARGV >=1 ) {
     266     if ($Options{mode} !~ /^All$/i) {
     267       push @ElementIDs, @ARGV;
     268     }
     269   }
     270   else {
     271     # Setup mode specified default values...
     272     my($Nothing);
     273     MODE: {
     274         if ($Options{mode} =~ /^ElementID$/i) { push @ElementIDs, 'H'; last MODE; };
     275         if ($Options{mode} =~ /^AmericanGroupLabel$/i) { push @ElementIDs, 'IA'; last MODE; };
     276         if ($Options{mode} =~ /^EuropeanGroupLabel$/i) { push @ElementIDs, 'IA'; last MODE; };
     277         if ($Options{mode} =~ /^GroupNumber$/i) { push @ElementIDs, '1'; last MODE; };
     278         if ($Options{mode} =~ /^GroupName$/i) { push @ElementIDs, 'AlkaliMetals'; last MODE; };
     279         if ($Options{mode} =~ /^PeriodNumber$/i) { push @ElementIDs, '1'; last MODE; };
     280         $Nothing = 1;
     281       }
     282   }
     283   if ($Options{mode} =~ /^GroupName$/i) {
     284     # Map group names to what's stored in Perioidic table data file...
     285     %GroupNamesMap = ('alkalimetals', 'Alkali metal', 'alkalineearthmetals', 'Alkaline earth metal', 'chalcogens', 'Chalcogen', 'coinagemetals', 'Coinage metal', 'halogens', 'Halogen', 'noblegases', 'Noble gas', 'pnictogens', 'Pnictogen', 'lanthanides', 'Lanthanoid', 'lanthanoids', 'Lanthanoid', 'actinides', 'Actinoid', 'actinoids', 'Actinoid' );
     286   }
     287
     288   # Generate list of elements...
     289   if ($Options{mode} =~ /^All$/i) {
     290     push @{$OptionsInfo{SpecifiedElementIDs}}, PeriodicTable::GetElements();
     291   }
     292   else {
     293     ELEMENTID: for $ElementID (@ElementIDs) {
     294       if ($Options{mode} =~ /^ElementID$/i) {
     295         if (PeriodicTable::IsElement($ElementID)) {
     296           push @{$OptionsInfo{SpecifiedElementIDs}}, $ElementID;
     297         }
     298         else {
     299           warn "Ignoring element ID, $ElementID, specified using command line parameter: Unknown element ID...\n";
     300           next ELEMENTID;
     301         }
     302       }
     303       elsif ($Options{mode} =~ /^AmericanGroupLabel$/i) {
     304         if (@GroupElements = PeriodicTable::GetElementsByAmericanStyleGroupLabel($ElementID)) {
     305           push @{$OptionsInfo{SpecifiedElementIDs}}, @GroupElements;
     306         }
     307         else {
     308           warn "Ignoring American style group label, $ElementID, specified using command line parameter: Unknown group label...\n";
     309           next ELEMENTID;
     310         }
     311       }
     312       elsif ($Options{mode} =~ /^EuropeanGroupLabel$/i) {
     313         if (@GroupElements = PeriodicTable::GetElementsByEuropeanStyleGroupLabel($ElementID)) {
     314           push @{$OptionsInfo{SpecifiedElementIDs}}, @GroupElements;
     315         }
     316         else {
     317           warn "Ignoring American style group label, $ElementID, specified using command line parameter: Unknown group label...\n";
     318           next ELEMENTID;
     319         }
     320       }
     321       elsif ($Options{mode} =~ /^GroupNumber$/i) {
     322         if (@GroupElements = PeriodicTable::GetElementsByGroupNumber($ElementID)) {
     323           push @{$OptionsInfo{SpecifiedElementIDs}}, @GroupElements;
     324         }
     325         else {
     326           warn "Ignoring group number, $ElementID, specified using command line parameter: Unknown group number...\n";
     327           next ELEMENTID;
     328         }
     329       }
     330       elsif ($Options{mode} =~ /^GroupName$/i) {
     331         if (exists $GroupNamesMap{lc($ElementID)}) {
     332           @GroupElements = PeriodicTable::GetElementsByGroupName($GroupNamesMap{lc($ElementID)});
     333           push @{$OptionsInfo{SpecifiedElementIDs}}, @GroupElements;
     334         }
     335         else {
     336           warn "Ignoring group name, $ElementID, specified using command line parameter: Unknown group name...\n";
     337           next ELEMENTID;
     338         }
     339       }
     340       elsif ($Options{mode} =~ /^PeriodNumber$/i) {
     341         if (@GroupElements = PeriodicTable::GetElementsByPeriodNumber($ElementID)) {
     342           push @{$OptionsInfo{SpecifiedElementIDs}}, @GroupElements;
     343         }
     344         else {
     345           warn "Ignoring period number, $ElementID, specified using command line parameter: Unknown period number...\n";
     346           next ELEMENTID;
     347         }
     348       }
     349     }
     350   }
     351   SetupSpecifiedProperties();
     352
     353   # Setup output file name...
     354   $OptionsInfo{OutFileName} = '';
     355   if ($OptionsInfo{FileOutput}) {
     356     my($OutFileRoot, $OutFileExt);
     357
     358     $OutFileRoot = '';
     359     $OutFileExt = "csv";
     360     if ($Options{outdelim} =~ /^tab$/i) {
     361       $OutFileExt = "tsv";
     362     }
     363     if ($Options{root}) {
     364       my ($RootFileDir, $RootFileName, $RootFileExt) = ParseFileName($Options{root});
     365       if ($RootFileName && $RootFileExt) {
     366         $OutFileRoot = $RootFileName;
     367       }
     368       else {
     369         $OutFileRoot = $Options{root};
     370       }
     371     }
     372     else {
     373       $OutFileRoot = 'PeriodicTableElementsInfo' . $Options{mode};
     374     }
     375     $OptionsInfo{OutFileName} = $OutFileRoot . '.' . $OutFileExt;
     376     if (!$Options{overwrite}) {
     377       if (-e $OptionsInfo{OutFileName}) {
     378         die "Error: Output file, $OptionsInfo{OutFileName}, already exists.\nUse \-o --overwrite\ option or specify a different name using \"-r --root\" option.\n";
     379       }
     380     }
     381   }
     382 }
     383
     384 # Setup properties to list...
     385 sub SetupSpecifiedProperties {
     386   $OptionsInfo{Properties} = defined $Options{properties} ? $Options{properties} : undef;
     387
     388   $OptionsInfo{PropertiesMode} = $Options{propertiesmode};
     389   $OptionsInfo{PropertiesListing} = $Options{propertieslisting};
     390
     391   # Make sure atomic appropriate properties/category names are specified...
     392   @{$OptionsInfo{SpecifiedProperies}} = ();
     393   if ($Options{properties} && ($Options{propertiesmode} =~ /^All$/i) ) {
     394     warn "Warning: Ignoring values specifed by \"-p --properties\" option: Not valid for All value of \"--propertiesmode\" option...\n";
     395   }
     396   if ($Options{propertiesmode} =~ /^All$/i) {
     397     if ($Options{propertieslisting} =~ /^Alphabetical$/i) {
     398       push @{$OptionsInfo{SpecifiedProperies}}, PeriodicTable::GetElementPropertiesNames('Alphabetical');
     399     }
     400     else {
     401       push @{$OptionsInfo{SpecifiedProperies}}, PeriodicTable::GetElementPropertiesNames();
     402     }
     403     push @{$OptionsInfo{SpecifiedProperies}}, 'NaturalIsotopeData';
     404   }
     405   else {
     406     if ($Options{properties}) {
     407       if ($Options{propertiesmode} =~ /^Categories$/i) {
     408         # Check category name...
     409         if ($Options{properties} !~ /^(Basic|BasicAndNaturalIsotope|NaturalIsotope)$/i) {
     410           die "Error: The value specified, $Options{properties}, for option \"-p --properties\" in conjunction with \"Categories\" value for option \"--propertiesmode\" is not valid. Allowed values: Basic, BasicAndNaturalIsotope, NaturalIsotope\n";
     411         }
     412         # Set propertynames...
     413         push @{$OptionsInfo{SpecifiedProperies}}, GetPropertyNamesFromCategories($Options{properties});
     414       }
     415       else {
     416         # Check property names..
     417         my($Name, $PropertyName, @Names);
     418         @Names = split /\,/, $Options{properties};
     419         NAME: for $Name (@Names) {
     420           $PropertyName = RemoveLeadingAndTrailingWhiteSpaces($Name);
     421           if ($PropertyName =~ /^NaturalIsotopeData$/i) {
     422             push @{$OptionsInfo{SpecifiedProperies}}, $PropertyName;
     423             next NAME;
     424           }
     425           if (PeriodicTable::IsElementProperty($PropertyName)) {
     426             push @{$OptionsInfo{SpecifiedProperies}}, $PropertyName;
     427           }
     428           else {
     429             warn "Warning: Ignoring value, $Name, specifed by \"-p --properties\" option: Unknown property name...\n";
     430           }
     431         }
     432         if ($Options{propertieslisting} =~ /^Alphabetical$/i) {
     433           # AtomicNumber, ElementSymbol and ElementName are always listed first and
     434           # NaturalIsotopeData in the end...
     435           my($AtomicNumberPresent, $ElementSymbolPresent, $ElementNamePresent, $NaturalIsotopeDataPresent, @AlphabeticalProperties, %PropertiesMap);
     436           %PropertiesMap = ();
     437           @AlphabeticalProperties = ();
     438           $AtomicNumberPresent = 0; $ElementSymbolPresent = 0; $ElementNamePresent = 0; $NaturalIsotopeDataPresent = 0;
     439           NAME: for $Name (@{$OptionsInfo{SpecifiedProperies}}) {
     440             if ($Name =~ /^AtomicNumber$/i) {
     441               $AtomicNumberPresent = 1;
     442               next NAME;
     443             }
     444             if ($Name =~ /^ElementSymbol$/i) {
     445               $ElementSymbolPresent = 1;
     446               next NAME;
     447             }
     448             if ($Name =~ /^ElementName$/i) {
     449               $ElementNamePresent = 1;
     450               next NAME;
     451             }
     452             if ($Name =~ /^NaturalIsotopeData$/i) {
     453               $NaturalIsotopeDataPresent = 1;
     454               next NAME;
     455             }
     456             $PropertiesMap{$Name} = $Name;
     457           }
     458           # Setup the alphabetical list...
     459           if ($AtomicNumberPresent) {
     460             push @AlphabeticalProperties, 'AtomicNumber';
     461           }
     462           if ($ElementSymbolPresent) {
     463             push @AlphabeticalProperties, 'ElementSymbol';
     464           }
     465           if ($ElementNamePresent) {
     466             push @AlphabeticalProperties, 'ElementName';
     467           }
     468           for $Name (sort keys %PropertiesMap) {
     469             push @AlphabeticalProperties, $Name;
     470           }
     471           if ($NaturalIsotopeDataPresent) {
     472             push @AlphabeticalProperties, 'NaturalIsotopeData';
     473           }
     474           @{$OptionsInfo{SpecifiedProperies}} = ();
     475           push @{$OptionsInfo{SpecifiedProperies}}, @AlphabeticalProperties;
     476         }
     477       }
     478     }
     479     else {
     480       # Set default value...
     481       push @{$OptionsInfo{SpecifiedProperies}}, GetPropertyNamesFromCategories('Basic');
     482     }
     483   }
     484 }
     485
     486 # Setup script usage  and retrieve command line arguments specified using various options...
     487 sub SetupScriptUsage {
     488
     489   # Retrieve all the options...
     490   %Options = ();
     491   $Options{mode} = "ElementID";
     492   $Options{outdelim} = "comma";
     493   $Options{output} = "STDOUT";
     494   $Options{outputstyle} = "ElementBlock";
     495   $Options{precision} = 4;
     496   $Options{propertiesmode} = "Categories";
     497   $Options{propertieslisting} = "ByGroup";
     498   $Options{quote} = "yes";
     499
     500   if (!GetOptions(\%Options, "help|h", "mode|m=s", "outdelim=s", "output=s", "outputstyle=s", "overwrite|o", "precision=i", "properties|p=s", "propertieslisting=s", "propertiesmode=s", "quote|q=s", "root|r=s", "workingdir|w=s")) {
     501     die "\nTo get a list of valid options and their values, use \"$ScriptName -h\" or\n\"perl -S $ScriptName -h\" command and try again...\n";
     502   }
     503   if ($Options{workingdir}) {
     504     if (! -d $Options{workingdir}) {
     505       die "Error: The value specified, $Options{workingdir}, for option \"-w --workingdir\" is not a directory name.\n";
     506     }
     507     chdir $Options{workingdir} or die "Error: Couldn't chdir $Options{workingdir}: $! \n";
     508   }
     509   if ($Options{mode} !~ /^(ElementID|AmericanGroupLabel|EuropeanGroupLabel|GroupNumber|GroupName|PeriodNumber|All)$/i) {
     510     die "Error: The value specified, $Options{mode}, for option \"-m --mode\" is not valid. Allowed values: ElementID, AmericanGroupLabel, EuropeanGroupLabel, GroupNumber, GroupName, PeriodNumber, or All\n";
     511   }
     512   if ($Options{outdelim} !~ /^(comma|semicolon|tab)$/i) {
     513     die "Error: The value specified, $Options{outdelim}, for option \"--outdelim\" is not valid. Allowed values: comma, tab, or semicolon\n";
     514   }
     515   if ($Options{output} !~ /^(STDOUT|File)$/i) {
     516     die "Error: The value specified, $Options{output}, for option \"--output\" is not valid. Allowed values: STDOUT or File\n";
     517   }
     518   if ($Options{outputstyle} !~ /^(ElementBlock|ElementRows)$/i) {
     519     die "Error: The value specified, $Options{outputstyle}, for option \"--outputstyle\" is not valid. Allowed values: ElementBlock or ElementRows\n";
     520   }
     521   if (!IsPositiveInteger($Options{precision})) {
     522     die "Error: The value specified, $Options{precision}, for option \"-p --precision\" is not valid. Allowed values: > 0 \n";
     523   }
     524   if ($Options{propertiesmode} !~ /^(Categories|Names|All)$/i) {
     525     die "Error: The value specified, $Options{propertiesmode}, for option \"--propertiesmode\" is not valid. Allowed values: Categories, Names, or All\n";
     526   }
     527   if ($Options{propertieslisting} !~ /^(ByGroup|Alphabetical)$/i) {
     528     die "Error: The value specified, $Options{propertieslisting}, for option \"--propertieslisting\" is not valid. Allowed values: ByGroup, or Alphabetical\n";
     529   }
     530   if ($Options{quote} !~ /^(yes|no)$/i) {
     531     die "Error: The value specified, $Options{quote}, for option \"-q --quote\" is not valid. Allowed values: yes or no\n";
     532   }
     533 }
     534