57 lines
846 B
Perl
57 lines
846 B
Perl
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#!/usr/bin/perl
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# Copyright (c) 2021-2022, PostgreSQL Global Development Group
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use strict;
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use warnings;
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my $integer = '[+-]?[0-9]+';
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my $real = '[+-]?[0-9]+\.[0-9]+';
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my $RANGE = '(\.\.)(\.)?';
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my $PLUMIN = q(\'\+\-\');
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my $FLOAT = "(($integer)|($real))([eE]($integer))?";
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my $EXTENSION = '<|>|~';
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my $boundary = "($EXTENSION)?$FLOAT";
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my $deviation = $FLOAT;
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my $rule_1 = $boundary . $PLUMIN . $deviation;
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my $rule_2 = $boundary . $RANGE . $boundary;
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my $rule_3 = $boundary . $RANGE;
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my $rule_4 = $RANGE . $boundary;
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my $rule_5 = $boundary;
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print "$rule_5\n";
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while (<>)
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{
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# s/ +//g;
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if (/^($rule_1)$/)
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{
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print;
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}
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elsif (/^($rule_2)$/)
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{
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print;
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}
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elsif (/^($rule_3)$/)
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{
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print;
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}
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elsif (/^($rule_4)$/)
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{
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print;
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}
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elsif (/^($rule_5)$/)
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{
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print;
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}
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else
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{
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print STDERR "error in $_\n";
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}
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}
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