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package FileHandle::Fmode; |
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1314
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use Fcntl qw(O_ACCMODE O_RDONLY O_WRONLY O_RDWR O_APPEND F_GETFL); |
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2
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145
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3
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9
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use strict; |
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3
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2
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2150
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4
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5
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require Exporter; |
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6
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require DynaLoader; |
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7
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8
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*is_FH = \&is_arg_ok; |
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9
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10
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our $VERSION = '0.14'; |
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11
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#$VERSION = eval $VERSION; |
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12
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13
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@FileHandle::Fmode::ISA = qw(Exporter DynaLoader); |
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14
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15
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@FileHandle::Fmode::EXPORT_OK = qw(is_R is_W is_RO is_WO is_RW is_arg_ok is_A is_FH); |
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17
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%FileHandle::Fmode::EXPORT_TAGS = (all => [qw |
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18
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(is_R is_W is_RO is_WO is_RW is_arg_ok is_A is_FH)]); |
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19
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20
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bootstrap FileHandle::Fmode $VERSION; |
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21
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22
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my $is_win32 = $^O =~ /mswin32/i ? 1 : 0; |
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23
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24
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sub is_arg_ok { |
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25
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80
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80
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0
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18638
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my $fileno = eval{fileno($_[0])}; |
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80
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169
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26
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80
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100
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180
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if($@) {return 0} |
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2
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7
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27
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78
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100
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138
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if(defined($fileno)) { |
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28
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76
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100
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144
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if($fileno == -1) { |
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29
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20
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50
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42
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if($] < 5.007) {return 0} |
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0
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0
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30
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20
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41
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return 1; |
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31
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} |
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56
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119
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return 1; |
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33
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} |
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34
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2
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5
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return 0; |
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35
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} |
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36
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37
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sub is_RO { |
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38
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88
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88
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0
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288
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my $fileno = fileno($_[0]); |
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39
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84
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100
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165
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if(!defined( $fileno)) {die "Not an open filehandle"} |
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4
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21
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40
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80
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100
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142
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if( $fileno == -1) { |
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41
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24
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50
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46
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if($] < 5.007) {die "Illegal fileno() return"} |
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0
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0
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42
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24
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100
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100
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135
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if(perliol_readable($_[0]) && !perliol_writable($_[0])) {return 1} |
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4
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34
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43
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20
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50
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return 0; |
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44
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} |
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45
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56
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50
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100
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if($is_win32) { |
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46
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0
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0
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0
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if(win32_fmode($_[0]) & 1) {return 1} |
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0
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0
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47
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0
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0
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return 0; |
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48
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} |
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49
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56
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189
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my $fmode = fcntl($_[0], F_GETFL, my $slush = 0); |
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50
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56
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100
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66
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237
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if(defined($fmode) && ($fmode & O_ACCMODE) == O_RDONLY) {return 1} |
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16
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46
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51
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40
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128
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return 0; |
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52
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} |
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53
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54
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sub is_WO { |
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55
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88
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88
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0
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228
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my $fileno = fileno($_[0]); |
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56
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84
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100
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150
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if(!defined( $fileno)) {die "Not an open filehandle"} |
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4
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18
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57
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80
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100
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134
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if( $fileno == -1) { |
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58
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24
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50
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49
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if($] < 5.007) {die "Illegal fileno() return"} |
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0
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0
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59
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24
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100
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66
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110
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if(!perliol_readable($_[0]) && perliol_writable($_[0])) {return 1} |
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8
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16
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60
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16
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43
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return 0; |
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61
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} |
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62
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56
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50
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97
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if($is_win32) { |
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63
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0
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0
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0
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if(win32_fmode($_[0]) & 2) {return 1} |
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0
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0
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64
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0
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0
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return 0; |
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65
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} |
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66
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56
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198
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my $fmode = fcntl($_[0], F_GETFL, my $slush = 0); |
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67
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56
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100
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66
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245
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if(defined($fmode) && ($fmode & O_ACCMODE) == O_WRONLY) {return 1} |
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16
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41
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68
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40
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113
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return 0; |
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69
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} |
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70
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71
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sub is_W { |
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72
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44
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100
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100
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44
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0
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180
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if(is_WO($_[0]) || is_RW($_[0])) {return 1} |
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30
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57
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73
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10
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24
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return 0; |
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74
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} |
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75
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76
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sub is_R { |
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77
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44
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100
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100
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44
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0
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218
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if(is_RO($_[0]) || is_RW($_[0])) {return 1} |
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28
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51
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78
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12
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25
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return 0; |
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79
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} |
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80
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81
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sub is_RW { |
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82
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102
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102
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0
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223
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my $fileno = fileno($_[0]); |
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83
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100
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100
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181
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if(!defined( $fileno)) {die "Not an open filehandle"} |
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2
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18
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84
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98
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100
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171
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if( $fileno == -1) { |
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85
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30
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50
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59
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if($] < 5.007) {die "Illegal fileno() return"} |
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0
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0
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86
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30
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100
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100
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178
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if(perliol_readable($_[0]) && perliol_writable($_[0])) {return 1} |
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18
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61
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87
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12
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36
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return 0; |
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88
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} |
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89
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68
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50
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114
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if($is_win32) { |
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90
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0
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0
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0
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if(win32_fmode($_[0]) & 128) {return 1} |
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0
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0
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91
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0
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0
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return 0; |
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92
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} |
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93
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68
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221
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my $fmode = fcntl($_[0], F_GETFL, my $slush = 0); |
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94
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68
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100
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66
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289
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if(defined($fmode) && ($fmode & O_ACCMODE) == O_RDWR) {return 1} |
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36
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111
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95
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32
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98
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return 0; |
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96
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} |
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97
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98
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sub is_A { |
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99
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44
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44
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0
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201
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my $fileno = fileno($_[0]); |
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100
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42
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100
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86
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if(!defined( $fileno)) {die "Not an open filehandle"} |
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2
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16
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101
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40
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100
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86
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if( $fileno == -1) { |
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102
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12
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50
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26
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if($] < 5.007) {die "Illegal fileno() return"} |
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0
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0
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103
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12
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37
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return is_appendable($_[0]); |
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104
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} |
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105
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28
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50
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53
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if($is_win32) { |
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106
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0
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0
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0
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if($] < 5.006001) {die "is_A not currently implemented on Win32 for pre-5.6.1 perl"} |
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0
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0
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107
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0
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0
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return is_appendable($_[0]); |
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108
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} |
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109
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28
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96
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my $fmode = fcntl($_[0], F_GETFL, my $slush = 0); |
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110
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28
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100
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57
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if($fmode & O_APPEND) {return 1} |
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8
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52
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111
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20
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38
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return 0; |
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112
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} |
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113
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114
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1; |
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115
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116
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__END__ |