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407
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1 package IMPL::Code::Loader;
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2 use strict;
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3 use warnings;
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4
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5 use IMPL::Const qw(:prop);
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6 use File::Spec;
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7 use IMPL::declare {
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8 require => {
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9 Exception => 'IMPL::Exception',
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10 ArgumentException => '-IMPL::InvalidArgumentException'
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11 },
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12 base => {
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13 'IMPL::Object' => undef,
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14 },
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15 props => [
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16 verifyNames => PROP_RO,
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17 prefix => PROP_RO,
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18 _pending => PROP_RW
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19 ]
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20 };
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21
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22 my $default;
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23 sub default {
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24 $default ||= new IMPL::Code::Loader;
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25 }
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26
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27 my $safe;
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28 sub safe {
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29 $safe ||= new IMPL::Code::Loader(verifyNames => 1);
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30 }
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31
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32 sub CTOR {
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411
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33 my ($this, %params) = @_;
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34
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35 $this->verifyNames($params{verifyNames}) if $params{verifyNames};
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36 $this->prefix($params{prefix}) if $params{prefix};
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37
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407
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38
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39 $this->_pending({});
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40 }
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41
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42 sub Require {
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43 my ($this,$package) = @_;
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44
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45 if ($this->verifyNames) {
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46 $package =~ m/^([a-zA-Z_0-9]+(?:::[a-zA-Z_0-9]+)*)$/
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47 or die ArgumentException->new(package => 'Invalid package name') ;
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48 $package = $1;
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49 }
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50
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51 $package = $this->prefix . '::' . $package if $this->prefix;
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52
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53 my $file = join('/', split(/::/,$package)) . ".pm";
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54
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55 require $file;
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56
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57 return $package;
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58 }
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59
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60 sub ModuleExists {
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61 my ($this,$package) = @_;
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62
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63 my $file = join('/', split(/::/,$this->GetFullName($package))) . ".pm";
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64
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65 -f File::Spec->catfile($_,$file) and return 1 foreach @INC;
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66
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67 return 0;
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68 }
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69
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70 sub GetFullName {
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71 my ($this,$package) = @_;
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72
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73 if ($this->verifyNames) {
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74 $package =~ m/^([a-zA-Z_0-9]+(?:::[a-zA-Z_0-9]+)*)$/
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75 or die ArgumentException->new(package => 'Invalid package name') ;
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76 }
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77
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78 return $this->prefix . '::' . $package if $this->prefix;
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79 }
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80
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81 1;
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82
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