291 lines
9.1 KiB
Perl
291 lines
9.1 KiB
Perl
#!/usr/bin/perl
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# ipp: a preprocessor script
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# author : Reese Jones rjones@sandia.gov (based on dprepro [Sandia])
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# to do :
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# priority (overide file defaults e.g. a=1 pfile a=2 -> a=2)
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# also order precedence: a=10 -p p.file b=12
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# nested if/else/endif blocks
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# Regular expressions for numeric fields
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$e = "-?(?:\\d+\\.?\\d*|\\.\\d+)[eEdD](?:\\+|-)?\\d+"; # exponential notation
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$f = "-?\\d+\\.\\d*|-?\\.\\d+"; # floating point
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$i = "-?\\d+"; # integer
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$ui = "\\d+"; # unsigned integer
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$n = "$e|$f|$i"; # numeric field
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# Read command line arguments
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while (scalar(@ARGV)) {
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$arg = shift(@ARGV);
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if ($arg =~ /-p/) { $parameter_file = shift(@ARGV);
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parse_parameter_file($parameter_file);
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}
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elsif ($arg =~ /-o/) { $new_file = shift(@ARGV); }
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elsif ($arg =~ /=/) { ($tag,$value) = split(/=/,$arg);
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$values_p1{$tag} = $value;
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}
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else { $template_file = $arg; }
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}
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# Check for correct command line arguments
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if( ! defined($template_file) ) {
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print STDERR "Usage: ipp <-p parameters_file> <name=value> template_file <-o new_file>\n";
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print STDERR " note: \"value\" must be numeric (not a character string)\n";
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print STDERR " parameter file format : name = value\n";
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print STDERR " or : value name\n";
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print STDERR " template file example: modulus is {10.0*name +3.2}\n";
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exit(-1);
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}
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# output
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$output_fh = \*STDOUT;
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if( defined($new_file) ) {
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open(NEW,">$new_file");
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$output_fh = \*NEW;
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}
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output($template_file,$output_fh);
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if( defined($new_file) ) { close(NEW); }
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# debug : print key--> value
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#foreach $key (sort keys %values_p1) {
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# print "# $key ---> ",$values_p1{$key},"\n";
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#}
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###########################################################################
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# parse parameter file
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###########################################################################
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# Read parameters file, extract tags and corresponding values in either aprepro
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# "{ tag = value }" format or standard "value tag" format, and store the
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# tag/value pairs in %values_p1.
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# NOTE : compound expressions are not currently allowed.
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sub parse_parameter_file {
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my $pfile = shift(@_);
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# (1) parse numerical values
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open (PARAMETERS, "<$pfile") || die "Can't open parameters file: $pfile: $!";
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while (<PARAMETERS>) { # read each line of file, one at a time
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# extract tag/value fields allowing multiple matches per line in either format
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foreach $field (m/(?:$n)\s+\w+|\s*\w+\s*=\s*(?:$n)\s*/go) {
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# extract tag/value pair from each field NOTE () are memory
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if ( ( ($value, $tag) = ($field =~ m/^($n)\s+(\w+)$/o) ) || # Standard
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( ($tag, $value) = ($field =~ m/^\s*(\w+)\s*=\s*($n)\s*$/o))){# Apr
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$value =~ s/[dD]/e/o; # convert any F77 dbl prec exponents
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$values_p1{$tag} = $value; # store in hash
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}
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}
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}
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close (PARAMETERS);
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# (2) parse string values in dbl quotes
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open (PARAMETERS, "<$pfile") || die "Can't open parameters file: $pfile: $!";
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while (<PARAMETERS>) { # read each line of file, one at a time
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# extract tag/value fields allowing multiple matches per line in either format
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#if ( m/=/ && m/\"/ ){
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if ( ($tag, $value) = ($_ =~ m/^\s*(\w+)\s*=\s*\"(.*)\"\s*$/o)){
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$values_p1{$tag} = $value; # store in hash
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}
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}
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close (PARAMETERS);
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}
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#################################################################
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# Process template simulation file and create new simulation file
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#################################################################
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# Read each line of template_file, find the {} fields, process any
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# assignments or expressions, and substitute the corresponding values.
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# Print each line with substitution to new_file. The parameters
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# file assignments (%values_p1 = precedence 1) take precedence over any
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# duplicate template file assignments (%values_p2 = precedence 2) in
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# order to allow the flexibility to define defaults in the template
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# file which can then be overridden by a particular parameters file.
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sub output{
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my $tfile = shift (@_);
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# Open the template simulation file for input.
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open (TEMPLATE, "<$tfile") || die "Can't open template file $tfile: $!";
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# Open the new simulation file for output.
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#$print_to_file = 0;
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#if (defined($new_file)) {
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#open (NEW, ">$new_file") || die "Can't create instance file $new_file: $!";
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#$print_to_file = 1;
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#}
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$print_to_file = 1;
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$fh = shift (@_);
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$print = 1; # print line flag
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while (<TEMPLATE>) {
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# Extract each {} match from this line
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foreach $field (m/\{\s*(.+?)\s*\}/go) { # ".+?" provides a minimal match
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# Case 1: test for simple tag match "{tag}"
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if ($field =~ m/^\w+$/o) {
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if ( defined ( $value = $values_p1{$field} ) ||
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defined ( $value = $values_p2{$field} ) ) { # or exists $values{$tag}
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s/\{\s*$field\s*\}/$value/;
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}
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}
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# Case 2: test for assignment "{tag = field}"
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elsif ( ($tag, $assign) = ($field =~ m/^(\w+)\s*=\s*(.+?)$/o) ) {
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# Case 2a: assignment of numerical value
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# ($n = exponential notation $e, floating point $f, or integer $i)
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if ($assign =~ m/^($n)$/o) {
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$assign =~ s/[dD]/e/o; # convert F77 dbl prec exponents
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$values_p2{$tag} = $assign; # store in priority 2 hash
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s/\{\s*$tag\s*=\s*.+?\s*\}/$assign/; # replace assignment with value
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}
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# Case 2b: assignment of expression. Evaluate $assign by replacing any
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# known tags with their values and then eval the remaining expression.
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else {
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foreach $exptag ($assign =~ m/\b(\w*[a-zA-Z_]+\w*)\b/go) {
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if ( defined ( $value = $values_p1{$exptag} ) ||
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defined ( $value = $values_p2{$exptag} ) ) {
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$assign =~ s/$exptag/$value/;
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}
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}
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$value = eval $assign;
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if ($@) { die "Eval error: $@"; }
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$values_p2{$tag} = $value; # store in priority 2 hash
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s/\{\s*$tag\s*=\s*.+?\s*\}/$value/; # replace assignment with value
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}
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}
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# Case 3: assume general expression in all remaining $field matches.
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# Evaluate $field by replacing any known tags with their values and
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# then eval the remaining expression.
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else {
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foreach $tag ($field =~ m/\b(\w*[a-zA-Z_]+\w*)\b/go) {
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if ( defined ( $value = $values_p1{$tag} ) ||
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defined ( $value = $values_p2{$tag} ) ) {
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$field =~ s/$tag/$value/;
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}
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}
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s/\{\s*.+?\s*\}/eval $field/e;
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if ($@) { die "Eval error: $@"; }
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}
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}
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# if/else blocks
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if ($_ =~ /#if/) {
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$line = $_; chomp($line); $line =~ s/^\s+//; $line =~ s/\s+$//;
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@items = split(/\s+/,$line);
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if (eval($items[1])) {;}
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else { $print = 0;}
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}
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elsif ($_ =~ /#else/) {
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if ($print) {$print = 0;} else {$print = 1;}
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}
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elsif ($_ =~ /#endif/) {
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$print = 1;
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}
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else {
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# output the processed line
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if ($print) { print $fh $_; }
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}
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}
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close (TEMPLATE);
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if ($print_to_file ) { close (NEW); }
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}
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###########################################################################
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# math operators
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###########################################################################
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# Intrinsic numeric operators include +,-,*,/,**,%,<<,>>,sqrt(),abs(),
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# sin(),cos(),atan2(),exp(),log(),int(),hex(),oct(),rand(),srand().
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# Augment these with others (adapted/extended from bprepro by Bob Walton).
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# NOTE: convert from degs to rads by pi/180 = (pi/4)/45 = atan2(1,1)/45
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# convert from rads to degs by 180/pi = 45/atan2(1,1)
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# additional logarithmic functions
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sub log10 { log($_[0])/log(10) }
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# additional trigonometric functions with radian input
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sub tan { sin($_[0])/cos($_[0]) }
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sub cot { cos($_[0])/sin($_[0]) }
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sub csc { 1/sin($_[0]) }
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sub sec { 1/cos($_[0]) }
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# trigonometric functions with degree input
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sub sind { sin($_[0]*atan2(1,1)/45) }
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sub cosd { cos($_[0]*atan2(1,1)/45) }
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sub tand { tan($_[0]*atan2(1,1)/45) }
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sub cotd { cot($_[0]*atan2(1,1)/45) }
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sub cscd { 1/sin($_[0]*atan2(1,1)/45) }
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sub secd { 1/cos($_[0]*atan2(1,1)/45) }
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# inverse trigonometric functions returning radians
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sub asin {
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if (abs($_[0]) > 1) { die "input out of range in asin()\n"; }
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atan2($_[0],sqrt(1-$_[0]**2));
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}
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sub acos {
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if (abs($_[0]) > 1) { die "input out of range in acos()\n"; }
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atan2(sqrt(1-$_[0]**2),$_[0]);
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}
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sub atan { atan2($_[0],1) }
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# inverse trigonometric functions returning degrees
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sub asind { asin($_[0])*45/atan2(1,1) }
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sub acosd { acos($_[0])*45/atan2(1,1) }
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sub atand { atan2($_[0],1)*45/atan2(1,1) }
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sub atan2d { atan2($_[0],$_[1])*45/atan2(1,1) }
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# hyperbolic functions
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sub sinh { (exp($_[0]) - exp(-$_[0]))/2 }
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sub cosh { (exp($_[0]) + exp(-$_[0]))/2 }
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sub tanh { sinh($_[0])/cosh($_[0]) }
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sub coth {
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if ($_[0] == 0) { die "input out of range in coth()\n"; }
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cosh($_[0])/sinh($_[0]);
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}
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sub csch {
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if ($_[0] == 0) { die "input out of range in csch()\n"; }
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1/sinh($_[0]);
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}
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sub sech { 1/cosh($_[0]) }
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# inverse hyperbolic functions
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sub asinh { log($_[0] + sqrt($_[0]**2 + 1)) }
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sub acosh {
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if ($_[0] < 1) { die "input out of range in acosh()\n"; }
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log($_[0] + sqrt($_[0]**2 - 1));
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}
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sub atanh {
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if (abs($_[0]) >= 1) { die "input out of range in atanh()\n"; }
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log((1+$_[0])/(1-$_[0]))/2;
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}
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