diff options
Diffstat (limited to 'perltest')
-rwxr-xr-x | perltest | 143 |
1 files changed, 143 insertions, 0 deletions
diff --git a/perltest b/perltest new file mode 100755 index 0000000..7c2114b --- /dev/null +++ b/perltest @@ -0,0 +1,143 @@ +#! /usr/bin/perl + +# Program for testing regular expressions with perl to check that PCRE handles +# them the same. + + +# Function for turning a string into a string of printing chars + +sub pchars { +my($t) = ""; + +foreach $c (split(//, @_[0])) + { + if (ord $c >= 32 && ord $c < 127) { $t .= $c; } + else { $t .= sprintf("\\x%02x", ord $c); } + } +$t; +} + + + +# Read lines from named file or stdin and write to named file or stdout; lines +# consist of a regular expression, in delimiters and optionally followed by +# options, followed by a set of test data, terminated by an empty line. + +# Sort out the input and output files + +if (@ARGV > 0) + { + open(INFILE, "<$ARGV[0]") || die "Failed to open $ARGV[0]\n"; + $infile = "INFILE"; + } +else { $infile = "STDIN"; } + +if (@ARGV > 1) + { + open(OUTFILE, ">$ARGV[1]") || die "Failed to open $ARGV[1]\n"; + $outfile = "OUTFILE"; + } +else { $outfile = "STDOUT"; } + +printf($outfile "Perl Regular Expressions\n\n"); + +# Main loop + +NEXT_RE: +for (;;) + { + printf " re> " if $infile eq "STDIN"; + last if ! ($_ = <$infile>); + printf $outfile "$_" if $infile ne "STDIN"; + next if ($_ eq ""); + + $pattern = $_; + + $delimiter = substr($_, 0, 1); + while ($pattern !~ /^\s*(.).*\1/s) + { + printf " > " if $infile eq "STDIN"; + last if ! ($_ = <$infile>); + printf $outfile "$_" if $infile ne "STDIN"; + $pattern .= $_; + } + + chomp($pattern); + $pattern =~ s/\s+$//; + + # Check that the pattern is valid + + eval "\$_ =~ ${pattern}"; + if ($@) + { + printf $outfile "Error: $@\n"; + next NEXT_RE; + } + + # Read data lines and test them + + for (;;) + { + printf "data> " if $infile eq "STDIN"; + last NEXT_RE if ! ($_ = <$infile>); + chomp; + printf $outfile "$_\n" if $infile ne "STDIN"; + + s/\s+$//; + s/^\s+//; + + last if ($_ eq ""); + + $_ = eval "\"$_\""; # To get escapes processed + + $ok = 0; + eval "if (\$_ =~ ${pattern}) {" . + "\$z = \$&;" . + "\$a = \$1;" . + "\$b = \$2;" . + "\$c = \$3;" . + "\$d = \$4;" . + "\$e = \$5;" . + "\$f = \$6;" . + "\$g = \$7;" . + "\$h = \$8;" . + "\$i = \$9;" . + "\$j = \$10;" . + "\$k = \$11;" . + "\$l = \$12;" . + "\$m = \$13;" . + "\$n = \$14;" . + "\$o = \$15;" . + "\$p = \$16;" . + "\$ok = 1; }"; + + if ($@) + { + printf $outfile "Error: $@\n"; + next NEXT_RE; + } + elsif (!$ok) + { + printf $outfile "No match\n"; + } + else + { + @subs = ($z,$a,$b,$c,$d,$e,$f,$g,$h,$i,$j,$k,$l,$m,$n,$o,$p); + $last_printed = 0; + for ($i = 0; $i <= 17; $i++) + { + if ($i == 0 || defined $subs[$i]) + { + while ($last_printed++ < $i-1) + { printf $outfile ("%2d: <unset>\n", $last_printed); } + printf $outfile ("%2d: %s\n", $i, &pchars($subs[$i])); + $last_printed = $i; + } + } + } + } + } + +printf $outfile "\n"; + +# End |