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package Shell; |
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72069
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use 5.006_001; |
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7
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2
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73
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3
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2
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2
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12
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use strict; |
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3
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2
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88
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4
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2
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2
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13
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use warnings; |
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11
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2
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89
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5
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2
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2
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1967
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use File::Spec::Functions; |
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2
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2029
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2
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501
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6
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7
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our($capture_stderr, $raw, $VERSION, $AUTOLOAD); |
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9
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$VERSION = '0.72'; |
10
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11
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1
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1
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0
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15
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sub new { bless \my $foo, shift } |
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0
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0
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0
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sub DESTROY { } |
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14
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sub import { |
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2
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2
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17
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my $self = shift; |
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2
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9
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my ($callpack, $callfile, $callline) = caller; |
17
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2
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5
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my @EXPORT; |
18
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2
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50
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16
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if (@_) { |
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0
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0
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@EXPORT = @_; |
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} else { |
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2
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5
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@EXPORT = 'AUTOLOAD'; |
22
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} |
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2
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6
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foreach my $sym (@EXPORT) { |
24
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2
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2
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14
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no strict 'refs'; |
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2
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4
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2
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193
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25
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2
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3
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*{"${callpack}::$sym"} = \&{"Shell::$sym"}; |
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28
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2
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7
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26
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} |
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} |
28
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29
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# NOTE: this is used to enable constant folding in |
30
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# expressions like (OS eq 'MSWin32') and |
31
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# (OS eq 'os2') just like it happened in 0.6 version |
32
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# which used eval "string" to install subs on the fly. |
33
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2
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2
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12
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use constant OS => $^O; |
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2
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3
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2
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1704
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34
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35
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=begin private |
36
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37
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=item B<_make_cmd> |
38
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39
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$sub = _make_cmd($cmd); |
40
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$sub = $shell->_make_cmd($cmd); |
41
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42
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Creates a closure which invokes the system command C<$cmd>. |
43
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44
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=end private |
45
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46
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=cut |
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48
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sub _make_cmd { |
49
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3
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50
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33
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3
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21
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shift if ref $_[0] && $_[0]->isa( 'Shell' ); |
50
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3
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9
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my $cmd = shift; |
51
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3
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14
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my $null = File::Spec::Functions::devnull(); |
52
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3
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100
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24
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$Shell::capture_stderr ||= 0; |
53
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# closing over $^O, $cmd, and $null |
54
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return sub { |
55
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5
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100
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66
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5
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2071
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shift if ref $_[0] && $_[0]->isa( 'Shell' ); |
56
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5
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100
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20
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if (@_ < 1) { |
57
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3
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50
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19757
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$Shell::capture_stderr == 1 ? `$cmd 2>&1` : |
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100
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58
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$Shell::capture_stderr == -1 ? `$cmd 2>$null` : |
59
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`$cmd`; |
60
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} elsif (OS eq 'os2') { |
61
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local(*SAVEOUT, *READ, *WRITE); |
62
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63
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open SAVEOUT, '>&STDOUT' or die; |
64
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pipe READ, WRITE or die; |
65
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open STDOUT, '>&WRITE' or die; |
66
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close WRITE; |
67
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68
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my $pid = system(1, $cmd, @_); |
69
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die "Can't execute $cmd: $!\n" if $pid < 0; |
70
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71
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open STDOUT, '>&SAVEOUT' or die; |
72
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close SAVEOUT; |
73
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74
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if (wantarray) { |
75
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my @ret = ; |
76
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close READ; |
77
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waitpid $pid, 0; |
78
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@ret; |
79
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} else { |
80
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local($/) = undef; |
81
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my $ret = ; |
82
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close READ; |
83
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waitpid $pid, 0; |
84
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$ret; |
85
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} |
86
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} else { |
87
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2
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5
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my $a; |
88
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2
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12
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my @arr = @_; |
89
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2
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50
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18
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unless( $Shell::raw ){ |
90
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2
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4
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if (OS eq 'MSWin32') { |
91
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# XXX this special-casing should not be needed |
92
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# if we do quoting right on Windows. :-( |
93
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# |
94
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# First, escape all quotes. Cover the case where we |
95
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# want to pass along a quote preceded by a backslash |
96
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# (i.e., C<"param \""" end">). |
97
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# Ugly, yup? You know, windoze. |
98
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# Enclose in quotes only the parameters that need it: |
99
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# try this: c:> dir "/w" |
100
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# and this: c:> dir /w |
101
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for (@arr) { |
102
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s/"/\\"/g; |
103
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s/\\\\"/\\\\"""/g; |
104
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$_ = qq["$_"] if /\s/; |
105
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} |
106
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} else { |
107
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2
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7
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for (@arr) { |
108
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2
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9
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s/(['\\])/\\$1/g; |
109
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2
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11
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$_ = $_; |
110
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} |
111
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} |
112
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} |
113
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2
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50
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14
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push @arr, '2>&1' if $Shell::capture_stderr == 1; |
114
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2
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50
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17
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push @arr, '2>$null' if $Shell::capture_stderr == -1; |
115
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2
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50
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16724
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open(SUBPROC, join(' ', $cmd, @arr, '|')) |
116
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or die "Can't exec $cmd: $!\n"; |
117
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2
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50
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150
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if (wantarray) { |
118
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2
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14864
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my @ret = ; |
119
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2
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96
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close SUBPROC; # XXX Oughta use a destructor. |
120
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2
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143
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@ret; |
121
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} else { |
122
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0
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0
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local($/) = undef; |
123
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0
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0
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my $ret = ; |
124
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0
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0
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close SUBPROC; |
125
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0
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0
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$ret; |
126
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} |
127
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} |
128
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3
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144
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}; |
129
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} |
130
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131
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sub AUTOLOAD { |
132
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3
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100
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66
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3
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6499
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shift if ref $_[0] && $_[0]->isa( 'Shell' ); |
133
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3
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14
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my $cmd = $AUTOLOAD; |
134
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3
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36
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$cmd =~ s/^.*:://; |
135
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2
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2
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14
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no strict 'refs'; |
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2
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4
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2
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158
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136
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3
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27
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*$AUTOLOAD = _make_cmd($cmd); |
137
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3
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25
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goto &$AUTOLOAD; |
138
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} |
139
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140
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1; |
141
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142
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__END__ |