summaryrefslogtreecommitdiffstats
path: root/contrib/perl5/lib/shellwords.pl
blob: 1c45a5a0903579fb0f58870242ce95d933e05065 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
;# shellwords.pl
;#
;# Usage:
;#	require 'shellwords.pl';
;#	@words = &shellwords($line);
;#	or
;#	@words = &shellwords(@lines);
;#	or
;#	@words = &shellwords;		# defaults to $_ (and clobbers it)

sub shellwords {
    package shellwords;
    local($_) = join('', @_) if @_;
    local(@words,$snippet,$field);

    s/^\s+//;
    while ($_ ne '') {
	$field = '';
	for (;;) {
	    if (s/^"(([^"\\]|\\.)*)"//) {
		($snippet = $1) =~ s#\\(.)#$1#g;
	    }
	    elsif (/^"/) {
		die "Unmatched double quote: $_\n";
	    }
	    elsif (s/^'(([^'\\]|\\.)*)'//) {
		($snippet = $1) =~ s#\\(.)#$1#g;
	    }
	    elsif (/^'/) {
		die "Unmatched single quote: $_\n";
	    }
	    elsif (s/^\\(.)//) {
		$snippet = $1;
	    }
	    elsif (s/^([^\s\\'"]+)//) {
		$snippet = $1;
	    }
	    else {
		s/^\s+//;
		last;
	    }
	    $field .= $snippet;
	}
	push(@words, $field);
    }
    @words;
}
1;
OpenPOWER on IntegriCloud