/[pcre]/code/tags/pcre-1.03/perltest
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Contents of /code/tags/pcre-1.03/perltest

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Revision 10 - (show annotations) (download)
Sat Feb 24 21:38:15 2007 UTC (7 years, 9 months ago) by nigel
File size: 2988 byte(s)
Tag code/trunk as code/tags/pcre-1.03.

1 #! /usr/bin/perl
2
3 # Program for testing regular expressions with perl to check that PCRE handles
4 # them the same.
5
6
7 # Function for turning a string into a string of printing chars
8
9 sub pchars {
10 my($t) = "";
11
12 foreach $c (split(//, @_[0]))
13 {
14 if (ord $c >= 32 && ord $c < 127) { $t .= $c; }
15 else { $t .= sprintf("\\x%02x", ord $c); }
16 }
17 $t;
18 }
19
20
21
22 # Read lines from named file or stdin and write to named file or stdout; lines
23 # consist of a regular expression, in delimiters and optionally followed by
24 # options, followed by a set of test data, terminated by an empty line.
25
26 # Sort out the input and output files
27
28 if (@ARGV > 0)
29 {
30 open(INFILE, "<$ARGV[0]") || die "Failed to open $ARGV[0]\n";
31 $infile = "INFILE";
32 }
33 else { $infile = "STDIN"; }
34
35 if (@ARGV > 1)
36 {
37 open(OUTFILE, ">$ARGV[1]") || die "Failed to open $ARGV[1]\n";
38 $outfile = "OUTFILE";
39 }
40 else { $outfile = "STDOUT"; }
41
42 printf($outfile "Perl Regular Expressions\n\n");
43
44 # Main loop
45
46 NEXT_RE:
47 for (;;)
48 {
49 printf " re> " if $infile eq "STDIN";
50 last if ! ($_ = <$infile>);
51 printf $outfile "$_" if $infile ne "STDIN";
52 next if ($_ eq "");
53
54 $pattern = $_;
55
56 $delimiter = substr($_, 0, 1);
57 while ($pattern !~ /^\s*(.).*\1/s)
58 {
59 printf " > " if $infile eq "STDIN";
60 last if ! ($_ = <$infile>);
61 printf $outfile "$_" if $infile ne "STDIN";
62 $pattern .= $_;
63 }
64
65 chomp($pattern);
66 $pattern =~ s/\s+$//;
67
68 # Check that the pattern is valid
69
70 eval "\$_ =~ ${pattern}";
71 if ($@)
72 {
73 printf $outfile "Error: $@\n";
74 next NEXT_RE;
75 }
76
77 # Read data lines and test them
78
79 for (;;)
80 {
81 printf "data> " if $infile eq "STDIN";
82 last NEXT_RE if ! ($_ = <$infile>);
83 chomp;
84 printf $outfile "$_\n" if $infile ne "STDIN";
85
86 s/\s+$//;
87 s/^\s+//;
88
89 last if ($_ eq "");
90
91 $_ = eval "\"$_\""; # To get escapes processed
92
93 $ok = 0;
94 eval "if (\$_ =~ ${pattern}) {" .
95 "\$z = \$&;" .
96 "\$a = \$1;" .
97 "\$b = \$2;" .
98 "\$c = \$3;" .
99 "\$d = \$4;" .
100 "\$e = \$5;" .
101 "\$f = \$6;" .
102 "\$g = \$7;" .
103 "\$h = \$8;" .
104 "\$i = \$9;" .
105 "\$j = \$10;" .
106 "\$k = \$11;" .
107 "\$l = \$12;" .
108 "\$m = \$13;" .
109 "\$n = \$14;" .
110 "\$o = \$15;" .
111 "\$p = \$16;" .
112 "\$ok = 1; }";
113
114 if ($@)
115 {
116 printf $outfile "Error: $@\n";
117 next NEXT_RE;
118 }
119 elsif (!$ok)
120 {
121 printf $outfile "No match\n";
122 }
123 else
124 {
125 @subs = ($z,$a,$b,$c,$d,$e,$f,$g,$h,$i,$j,$k,$l,$m,$n,$o,$p);
126 $last_printed = 0;
127 for ($i = 0; $i <= 17; $i++)
128 {
129 if ($i == 0 || defined $subs[$i])
130 {
131 while ($last_printed++ < $i-1)
132 { printf $outfile ("%2d: <unset>\n", $last_printed); }
133 printf $outfile ("%2d: %s\n", $i, &pchars($subs[$i]));
134 $last_printed = $i;
135 }
136 }
137 }
138 }
139 }
140
141 printf $outfile "\n";
142
143 # End

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