61 lines
1.3 KiB
PHP
61 lines
1.3 KiB
PHP
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<?php
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#
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# relocate.php /path/to/file prefix
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#
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# Takes a file as input and a string prefix; reads
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# the file as a serialized data blob and strips PREFIX
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# from the beginning of each string value within the blob.
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# Serializes again and writes output to stdout.
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#
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$file = $_SERVER['argv'][1];
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$destdir = $_SERVER['argv'][2];
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$destdir_len = strlen($destdir);
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function relocate_string($value) {
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global $destdir, $destdir_len;
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if (strncmp($value, $destdir, $destdir_len) == 0) {
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$value = substr($value, $destdir_len);
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}
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return $value;
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}
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function relocate_value($value) {
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if (is_string($value)) {
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$value = relocate_string($value);
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} else if (is_array($value)) {
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$value = relocate_array($value);
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}
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return $value;
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}
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function relocate_array($array) {
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$result = array();
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foreach ($array as $key => $value) {
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if (is_string($key)) {
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$key = relocate_string($key);
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}
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$result[$key] = relocate_value($value);
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}
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return $result;
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}
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$input = file_get_contents($file);
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# Special case for /etc/pear.conf.
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if (strncmp($input, "#PEAR_Config 0.9\n", 17) == 0) {
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echo substr($input, 0, 17);
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$s = substr($input, 17);
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} else {
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$s = $input;
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}
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echo serialize(relocate_value(unserialize($s)));
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?>
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