/[pcre]/code/tags/pcre-1.00/perltest
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Contents of /code/tags/pcre-1.00/perltest

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Revision 4 - (hide annotations) (download)
Sat Feb 24 21:38:03 2007 UTC (7 years, 7 months ago) by nigel
File size: 2988 byte(s)
Tag code/trunk as code/tags/pcre-1.00.

1 nigel 3 #! /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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