1 | package ExtUtils::Command;
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2 |
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3 | use 5.00503;
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4 | use strict;
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5 | use Carp;
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6 | use File::Copy;
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7 | use File::Compare;
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8 | use File::Basename;
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9 | use File::Path qw(rmtree);
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10 | require Exporter;
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11 | use vars qw(@ISA @EXPORT @EXPORT_OK $VERSION);
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12 | @ISA = qw(Exporter);
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13 | @EXPORT = qw(cp rm_f rm_rf mv cat eqtime mkpath touch test_f chmod
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14 | dos2unix);
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15 | $VERSION = '1.09';
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16 |
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17 | my $Is_VMS = $^O eq 'VMS';
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18 |
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19 | =head1 NAME
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20 |
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21 | ExtUtils::Command - utilities to replace common UNIX commands in Makefiles etc.
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22 |
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23 | =head1 SYNOPSIS
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24 |
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25 | perl -MExtUtils::Command -e cat files... > destination
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26 | perl -MExtUtils::Command -e mv source... destination
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27 | perl -MExtUtils::Command -e cp source... destination
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28 | perl -MExtUtils::Command -e touch files...
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29 | perl -MExtUtils::Command -e rm_f files...
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30 | perl -MExtUtils::Command -e rm_rf directories...
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31 | perl -MExtUtils::Command -e mkpath directories...
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32 | perl -MExtUtils::Command -e eqtime source destination
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33 | perl -MExtUtils::Command -e test_f file
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34 | perl -MExtUtils::Command -e chmod mode files...
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35 | ...
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36 |
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37 | =head1 DESCRIPTION
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38 |
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39 | The module is used to replace common UNIX commands. In all cases the
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40 | functions work from @ARGV rather than taking arguments. This makes
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41 | them easier to deal with in Makefiles.
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42 |
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43 | perl -MExtUtils::Command -e some_command some files to work on
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44 |
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45 | I<NOT>
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46 |
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47 | perl -MExtUtils::Command -e 'some_command qw(some files to work on)'
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48 |
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49 | For that use L<Shell::Command>.
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50 |
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51 | Filenames with * and ? will be glob expanded.
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52 |
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53 | =over 4
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54 |
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55 | =cut
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56 |
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57 | # VMS uses % instead of ? to mean "one character"
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58 | my $wild_regex = $Is_VMS ? '*%' : '*?';
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59 | sub expand_wildcards
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60 | {
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61 | @ARGV = map(/[$wild_regex]/o ? glob($_) : $_,@ARGV);
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62 | }
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63 |
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64 |
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65 | =item cat
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66 |
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67 | cat file ...
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68 |
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69 | Concatenates all files mentioned on command line to STDOUT.
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70 |
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71 | =cut
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72 |
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73 | sub cat ()
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74 | {
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75 | expand_wildcards();
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76 | print while (<>);
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77 | }
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78 |
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79 | =item eqtime
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80 |
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81 | eqtime source destination
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82 |
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83 | Sets modified time of destination to that of source.
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84 |
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85 | =cut
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86 |
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87 | sub eqtime
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88 | {
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89 | my ($src,$dst) = @ARGV;
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90 | local @ARGV = ($dst); touch(); # in case $dst doesn't exist
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91 | utime((stat($src))[8,9],$dst);
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92 | }
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93 |
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94 | =item rm_rf
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95 |
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96 | rm_rf files or directories ...
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97 |
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98 | Removes files and directories - recursively (even if readonly)
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99 |
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100 | =cut
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101 |
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102 | sub rm_rf
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103 | {
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104 | expand_wildcards();
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105 | rmtree([grep -e $_,@ARGV],0,0);
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106 | }
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107 |
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108 | =item rm_f
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109 |
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110 | rm_f file ...
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111 |
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112 | Removes files (even if readonly)
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113 |
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114 | =cut
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115 |
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116 | sub rm_f {
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117 | expand_wildcards();
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118 |
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119 | foreach my $file (@ARGV) {
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120 | next unless -f $file;
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121 |
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122 | next if _unlink($file);
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123 |
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124 | chmod(0777, $file);
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125 |
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126 | next if _unlink($file);
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127 |
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128 | carp "Cannot delete $file: $!";
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129 | }
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130 | }
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131 |
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132 | sub _unlink {
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133 | my $files_unlinked = 0;
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134 | foreach my $file (@_) {
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135 | my $delete_count = 0;
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136 | $delete_count++ while unlink $file;
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137 | $files_unlinked++ if $delete_count;
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138 | }
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139 | return $files_unlinked;
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140 | }
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141 |
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142 |
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143 | =item touch
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144 |
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145 | touch file ...
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146 |
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147 | Makes files exist, with current timestamp
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148 |
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149 | =cut
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150 |
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151 | sub touch {
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152 | my $t = time;
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153 | expand_wildcards();
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154 | foreach my $file (@ARGV) {
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155 | open(FILE,">>$file") || die "Cannot write $file:$!";
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156 | close(FILE);
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157 | utime($t,$t,$file);
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158 | }
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159 | }
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160 |
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161 | =item mv
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162 |
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163 | mv source_file destination_file
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164 | mv source_file source_file destination_dir
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165 |
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166 | Moves source to destination. Multiple sources are allowed if
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167 | destination is an existing directory.
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168 |
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169 | Returns true if all moves succeeded, false otherwise.
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170 |
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171 | =cut
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172 |
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173 | sub mv {
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174 | expand_wildcards();
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175 | my @src = @ARGV;
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176 | my $dst = pop @src;
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177 |
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178 | croak("Too many arguments") if (@src > 1 && ! -d $dst);
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179 |
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180 | my $nok = 0;
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181 | foreach my $src (@src) {
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182 | $nok ||= !move($src,$dst);
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183 | }
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184 | return !$nok;
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185 | }
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186 |
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187 | =item cp
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188 |
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189 | cp source_file destination_file
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190 | cp source_file source_file destination_dir
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191 |
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192 | Copies sources to the destination. Multiple sources are allowed if
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193 | destination is an existing directory.
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194 |
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195 | Returns true if all copies succeeded, false otherwise.
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196 |
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197 | =cut
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198 |
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199 | sub cp {
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200 | expand_wildcards();
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201 | my @src = @ARGV;
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202 | my $dst = pop @src;
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203 |
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204 | croak("Too many arguments") if (@src > 1 && ! -d $dst);
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205 |
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206 | my $nok = 0;
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207 | foreach my $src (@src) {
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208 | $nok ||= !copy($src,$dst);
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209 | }
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210 | return $nok;
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211 | }
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212 |
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213 | =item chmod
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214 |
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215 | chmod mode files ...
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216 |
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217 | Sets UNIX like permissions 'mode' on all the files. e.g. 0666
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218 |
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219 | =cut
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220 |
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221 | sub chmod {
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222 | local @ARGV = @ARGV;
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223 | my $mode = shift(@ARGV);
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224 | expand_wildcards();
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225 |
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226 | if( $Is_VMS ) {
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227 | foreach my $idx (0..$#ARGV) {
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228 | my $path = $ARGV[$idx];
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229 | next unless -d $path;
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230 |
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231 | # chmod 0777, [.foo.bar] doesn't work on VMS, you have to do
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232 | # chmod 0777, [.foo]bar.dir
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233 | my @dirs = File::Spec->splitdir( $path );
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234 | $dirs[-1] .= '.dir';
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235 | $path = File::Spec->catfile(@dirs);
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236 |
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237 | $ARGV[$idx] = $path;
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238 | }
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239 | }
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240 |
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241 | chmod(oct $mode,@ARGV) || die "Cannot chmod ".join(' ',$mode,@ARGV).":$!";
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242 | }
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243 |
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244 | =item mkpath
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245 |
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246 | mkpath directory ...
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247 |
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248 | Creates directories, including any parent directories.
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249 |
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250 | =cut
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251 |
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252 | sub mkpath
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253 | {
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254 | expand_wildcards();
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255 | File::Path::mkpath([@ARGV],0,0777);
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256 | }
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257 |
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258 | =item test_f
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259 |
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260 | test_f file
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261 |
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262 | Tests if a file exists
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263 |
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264 | =cut
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265 |
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266 | sub test_f
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267 | {
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268 | exit !-f $ARGV[0];
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269 | }
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270 |
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271 | =item dos2unix
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272 |
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273 | dos2unix files or dirs ...
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274 |
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275 | Converts DOS and OS/2 linefeeds to Unix style recursively.
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276 |
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277 | =cut
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278 |
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279 | sub dos2unix {
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280 | require File::Find;
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281 | File::Find::find(sub {
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282 | return if -d;
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283 | return unless -w _;
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284 | return unless -r _;
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285 | return if -B _;
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286 |
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287 | local $\;
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288 |
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289 | my $orig = $_;
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290 | my $temp = '.dos2unix_tmp';
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291 | open ORIG, $_ or do { warn "dos2unix can't open $_: $!"; return };
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292 | open TEMP, ">$temp" or
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293 | do { warn "dos2unix can't create .dos2unix_tmp: $!"; return };
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294 | while (my $line = <ORIG>) {
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295 | $line =~ s/\015\012/\012/g;
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296 | print TEMP $line;
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297 | }
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298 | close ORIG;
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299 | close TEMP;
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300 | rename $temp, $orig;
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301 |
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302 | }, @ARGV);
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303 | }
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304 |
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305 | =back
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306 |
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307 | =head1 SEE ALSO
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308 |
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309 | Shell::Command which is these same functions but take arguments normally.
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310 |
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311 |
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312 | =head1 AUTHOR
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313 |
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314 | Nick Ing-Simmons C<[email protected]>
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315 |
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316 | Currently maintained by Michael G Schwern C<[email protected]>.
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317 |
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318 | =cut
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319 |
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