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28
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1 #!/usr/bin/php |
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2 <?php |
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3 $nodes = array(); |
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4 |
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5 $file = STDIN; |
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6 |
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7 while (!feof($file)) { |
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8 $line = stream_get_line($file, 1024, "\n"); |
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9 if ($line === NULL) break; |
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10 if (!strlen($line)) continue; |
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11 $pathnodes = explode(' ', $line); |
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12 $prevnode = NULL; |
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13 foreach ($pathnodes as $node) { |
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14 if ($prevnode && $node) $nodes[$prevnode][$node] = 1; |
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15 $prevnode = $node; |
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16 } |
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17 } |
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18 |
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19 foreach ($nodes as $node => $links) { |
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20 foreach ($links as $link => $dummy) { |
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21 if (isset($nodes[$node][$link]) && isset($nodes[$link][$node])) unset($nodes[$link][$node]); |
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22 } |
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23 } |
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24 |
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25 print("graph BGP_nodes {\n"); |
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26 foreach ($nodes as $node => $links) { |
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27 foreach ($links as $link => $dummy) { |
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28 print("\t".$node.' -- '.$link.";\n"); |
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29 } |
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30 } |
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31 print('}'); |
