1 | package URI::_generic;
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2 | require URI;
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3 | require URI::_query;
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4 | @ISA=qw(URI URI::_query);
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5 |
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6 | use strict;
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7 | use URI::Escape qw(uri_unescape);
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8 | use Carp ();
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9 |
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10 | my $ACHAR = $URI::uric; $ACHAR =~ s,\\[/?],,g;
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11 | my $PCHAR = $URI::uric; $PCHAR =~ s,\\[?],,g;
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12 |
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13 | sub _no_scheme_ok { 1 }
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14 |
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15 | sub authority
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16 | {
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17 | my $self = shift;
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18 | $$self =~ m,^((?:$URI::scheme_re:)?)(?://([^/?\#]*))?(.*)$,os or die;
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19 |
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20 | if (@_) {
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21 | my $auth = shift;
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22 | $$self = $1;
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23 | my $rest = $3;
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24 | if (defined $auth) {
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25 | $auth =~ s/([^$ACHAR])/ URI::Escape::escape_char($1)/ego;
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26 | utf8::downgrade($auth);
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27 | $$self .= "//$auth";
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28 | }
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29 | _check_path($rest, $$self);
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30 | $$self .= $rest;
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31 | }
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32 | $2;
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33 | }
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34 |
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35 | sub path
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36 | {
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37 | my $self = shift;
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38 | $$self =~ m,^((?:[^:/?\#]+:)?(?://[^/?\#]*)?)([^?\#]*)(.*)$,s or die;
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39 |
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40 | if (@_) {
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41 | $$self = $1;
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42 | my $rest = $3;
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43 | my $new_path = shift;
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44 | $new_path = "" unless defined $new_path;
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45 | $new_path =~ s/([^$PCHAR])/ URI::Escape::escape_char($1)/ego;
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46 | utf8::downgrade($new_path);
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47 | _check_path($new_path, $$self);
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48 | $$self .= $new_path . $rest;
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49 | }
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50 | $2;
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51 | }
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52 |
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53 | sub path_query
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54 | {
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55 | my $self = shift;
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56 | $$self =~ m,^((?:[^:/?\#]+:)?(?://[^/?\#]*)?)([^\#]*)(.*)$,s or die;
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57 |
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58 | if (@_) {
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59 | $$self = $1;
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60 | my $rest = $3;
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61 | my $new_path = shift;
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62 | $new_path = "" unless defined $new_path;
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63 | $new_path =~ s/([^$URI::uric])/ URI::Escape::escape_char($1)/ego;
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64 | utf8::downgrade($new_path);
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65 | _check_path($new_path, $$self);
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66 | $$self .= $new_path . $rest;
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67 | }
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68 | $2;
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69 | }
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70 |
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71 | sub _check_path
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72 | {
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73 | my($path, $pre) = @_;
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74 | my $prefix;
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75 | if ($pre =~ m,/,) { # authority present
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76 | $prefix = "/" if length($path) && $path !~ m,^[/?\#],;
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77 | }
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78 | else {
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79 | if ($path =~ m,^//,) {
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80 | Carp::carp("Path starting with double slash is confusing")
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81 | if $^W;
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82 | }
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83 | elsif (!length($pre) && $path =~ m,^[^:/?\#]+:,) {
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84 | Carp::carp("Path might look like scheme, './' prepended")
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85 | if $^W;
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86 | $prefix = "./";
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87 | }
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88 | }
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89 | substr($_[0], 0, 0) = $prefix if defined $prefix;
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90 | }
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91 |
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92 | sub path_segments
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93 | {
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94 | my $self = shift;
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95 | my $path = $self->path;
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96 | if (@_) {
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97 | my @arg = @_; # make a copy
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98 | for (@arg) {
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99 | if (ref($_)) {
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100 | my @seg = @$_;
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101 | $seg[0] =~ s/%/%25/g;
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102 | for (@seg) { s/;/%3B/g; }
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103 | $_ = join(";", @seg);
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104 | }
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105 | else {
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106 | s/%/%25/g; s/;/%3B/g;
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107 | }
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108 | s,/,%2F,g;
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109 | }
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110 | $self->path(join("/", @arg));
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111 | }
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112 | return $path unless wantarray;
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113 | map {/;/ ? $self->_split_segment($_)
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114 | : uri_unescape($_) }
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115 | split('/', $path, -1);
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116 | }
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117 |
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118 |
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119 | sub _split_segment
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120 | {
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121 | my $self = shift;
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122 | require URI::_segment;
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123 | URI::_segment->new(@_);
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124 | }
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125 |
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126 |
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127 | sub abs
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128 | {
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129 | my $self = shift;
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130 | my $base = shift || Carp::croak("Missing base argument");
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131 |
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132 | if (my $scheme = $self->scheme) {
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133 | return $self unless $URI::ABS_ALLOW_RELATIVE_SCHEME;
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134 | $base = URI->new($base) unless ref $base;
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135 | return $self unless $scheme eq $base->scheme;
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136 | }
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137 |
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138 | $base = URI->new($base) unless ref $base;
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139 | my $abs = $self->clone;
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140 | $abs->scheme($base->scheme);
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141 | return $abs if $$self =~ m,^(?:$URI::scheme_re:)?//,o;
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142 | $abs->authority($base->authority);
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143 |
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144 | my $path = $self->path;
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145 | return $abs if $path =~ m,^/,;
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146 |
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147 | if (!length($path)) {
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148 | my $abs = $base->clone;
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149 | my $query = $self->query;
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150 | $abs->query($query) if defined $query;
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151 | $abs->fragment($self->fragment);
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152 | return $abs;
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153 | }
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154 |
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155 | my $p = $base->path;
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156 | $p =~ s,[^/]+$,,;
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157 | $p .= $path;
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158 | my @p = split('/', $p, -1);
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159 | shift(@p) if @p && !length($p[0]);
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160 | my $i = 1;
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161 | while ($i < @p) {
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162 | #print "$i ", join("/", @p), " ($p[$i])\n";
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163 | if ($p[$i-1] eq ".") {
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164 | splice(@p, $i-1, 1);
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165 | $i-- if $i > 1;
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166 | }
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167 | elsif ($p[$i] eq ".." && $p[$i-1] ne "..") {
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168 | splice(@p, $i-1, 2);
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169 | if ($i > 1) {
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170 | $i--;
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171 | push(@p, "") if $i == @p;
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172 | }
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173 | }
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174 | else {
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175 | $i++;
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176 | }
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177 | }
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178 | $p[-1] = "" if @p && $p[-1] eq "."; # trailing "/."
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179 | if ($URI::ABS_REMOTE_LEADING_DOTS) {
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180 | shift @p while @p && $p[0] =~ /^\.\.?$/;
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181 | }
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182 | $abs->path("/" . join("/", @p));
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183 | $abs;
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184 | }
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185 |
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186 | # The opposite of $url->abs. Return a URI which is as relative as possible
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187 | sub rel {
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188 | my $self = shift;
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189 | my $base = shift || Carp::croak("Missing base argument");
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190 | my $rel = $self->clone;
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191 | $base = URI->new($base) unless ref $base;
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192 |
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193 | #my($scheme, $auth, $path) = @{$rel}{qw(scheme authority path)};
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194 | my $scheme = $rel->scheme;
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195 | my $auth = $rel->canonical->authority;
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196 | my $path = $rel->path;
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197 |
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198 | if (!defined($scheme) && !defined($auth)) {
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199 | # it is already relative
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200 | return $rel;
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201 | }
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202 |
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203 | #my($bscheme, $bauth, $bpath) = @{$base}{qw(scheme authority path)};
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204 | my $bscheme = $base->scheme;
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205 | my $bauth = $base->canonical->authority;
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206 | my $bpath = $base->path;
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207 |
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208 | for ($bscheme, $bauth, $auth) {
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209 | $_ = '' unless defined
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210 | }
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211 |
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212 | unless ($scheme eq $bscheme && $auth eq $bauth) {
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213 | # different location, can't make it relative
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214 | return $rel;
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215 | }
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216 |
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217 | for ($path, $bpath) { $_ = "/$_" unless m,^/,; }
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218 |
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219 | # Make it relative by eliminating scheme and authority
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220 | $rel->scheme(undef);
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221 | $rel->authority(undef);
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222 |
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223 | # This loop is based on code from Nicolai Langfeldt <[email protected]>.
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224 | # First we calculate common initial path components length ($li).
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225 | my $li = 1;
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226 | while (1) {
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227 | my $i = index($path, '/', $li);
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228 | last if $i < 0 ||
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229 | $i != index($bpath, '/', $li) ||
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230 | substr($path,$li,$i-$li) ne substr($bpath,$li,$i-$li);
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231 | $li=$i+1;
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232 | }
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233 | # then we nuke it from both paths
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234 | substr($path, 0,$li) = '';
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235 | substr($bpath,0,$li) = '';
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236 |
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237 | if ($path eq $bpath &&
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238 | defined($rel->fragment) &&
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239 | !defined($rel->query)) {
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240 | $rel->path("");
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241 | }
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242 | else {
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243 | # Add one "../" for each path component left in the base path
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244 | $path = ('../' x $bpath =~ tr|/|/|) . $path;
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245 | $path = "./" if $path eq "";
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246 | $rel->path($path);
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247 | }
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248 |
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249 | $rel;
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250 | }
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251 |
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252 | 1;
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