+++ /dev/null
-#! /usr/bin/perl
-
-# Program for testing regular expressions with perl to check that PCRE handles
-# them the same. This is the version that supports /8 for UTF-8 testing. It
-# requires at least Perl 5.6.
-
-
-# Function for turning a string into a string of printing chars. There are
-# currently problems with UTF-8 strings; this fudges round them.
-
-sub pchars {
-my($t) = "";
-
-if ($utf8)
- {
- use utf8;
- @p = unpack('U*', $_[0]);
- foreach $c (@p)
- {
- if ($c >= 32 && $c < 127) { $t .= chr $c; }
- else { $t .= sprintf("\\x{%02x}", $c); }
- }
- }
-
-else
- {
- 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 = $_;
-
- while ($pattern !~ /^\s*(.).*\1/s)
- {
- printf " > " if $infile eq "STDIN";
- last if ! ($_ = <$infile>);
- printf $outfile "$_" if $infile ne "STDIN";
- $pattern .= $_;
- }
-
- chomp($pattern);
- $pattern =~ s/\s+$//;
-
- # The private /+ modifier means "print $' afterwards".
-
- $showrest = ($pattern =~ s/\+(?=[a-z]*$)//);
-
- # The private /8 modifier means "operate in UTF-8". Currently, Perl
- # has bugs that we try to work around using this flag.
-
- $utf8 = ($pattern =~ s/8(?=[a-z]*$)//);
-
- # Check that the pattern is valid
-
- if ($utf8)
- {
- use utf8;
- eval "\$_ =~ ${pattern}";
- }
- else
- {
- eval "\$_ =~ ${pattern}";
- }
-
- if ($@)
- {
- printf $outfile "Error: $@";
- next NEXT_RE;
- }
-
- # If the /g modifier is present, we want to put a loop round the matching;
- # otherwise just a single "if".
-
- $cmd = ($pattern =~ /g[a-z]*$/)? "while" : "if";
-
- # If the pattern is actually the null string, Perl uses the most recently
- # executed (and successfully compiled) regex is used instead. This is a
- # nasty trap for the unwary! The PCRE test suite does contain null strings
- # in places - if they are allowed through here all sorts of weird and
- # unexpected effects happen. To avoid this, we replace such patterns with
- # a non-null pattern that has the same effect.
-
- $pattern = "/(?#)/$2" if ($pattern =~ /^(.)\1(.*)$/);
-
- # 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 "");
-
- $x = eval "\"$_\""; # To get escapes processed
-
- # Empty array for holding results, then do the matching.
-
- @subs = ();
-
- $pushes = "push \@subs,\$&;" .
- "push \@subs,\$1;" .
- "push \@subs,\$2;" .
- "push \@subs,\$3;" .
- "push \@subs,\$4;" .
- "push \@subs,\$5;" .
- "push \@subs,\$6;" .
- "push \@subs,\$7;" .
- "push \@subs,\$8;" .
- "push \@subs,\$9;" .
- "push \@subs,\$10;" .
- "push \@subs,\$11;" .
- "push \@subs,\$12;" .
- "push \@subs,\$13;" .
- "push \@subs,\$14;" .
- "push \@subs,\$15;" .
- "push \@subs,\$16;" .
- "push \@subs,\$'; }";
-
- if ($utf8)
- {
- use utf8;
- eval "${cmd} (\$x =~ ${pattern}) {" . $pushes;
- }
- else
- {
- eval "${cmd} (\$x =~ ${pattern}) {" . $pushes;
- }
-
- if ($@)
- {
- printf $outfile "Error: $@\n";
- next NEXT_RE;
- }
- elsif (scalar(@subs) == 0)
- {
- printf $outfile "No match\n";
- }
- else
- {
- while (scalar(@subs) != 0)
- {
- printf $outfile (" 0: %s\n", &pchars($subs[0]));
- printf $outfile (" 0+ %s\n", &pchars($subs[17])) if $showrest;
- $last_printed = 0;
- for ($i = 1; $i <= 16; $i++)
- {
- if (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;
- }
- }
- splice(@subs, 0, 18);
- }
- }
- }
- }
-
-printf $outfile "\n";
-
-# End
Code Review / bottlenecks.git / blobdiff