pclziputilpathreduction

函数
pclziputilpathreduction ( $p_dir )

pclziputilpathreduction: 这个函数将一个路径还原成最简单的形式。它需要一个参数:$p_path(字符串)表示要减少的路径。

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function PclZipUtilPathReduction($p_dir)
{
$v_result = "";
// ----- Look for not empty path
if ($p_dir != "") {
// ----- Explode path by directory names
$v_list = explode("/", $p_dir);
// ----- Study directories from last to first
$v_skip = 0;
for ($i=sizeof($v_list)-1; $i>=0; $i--) {
// ----- Look for current path
if ($v_list[$i] == ".") {
// ----- Ignore this directory
// Should be the first $i=0, but no check is done
}
else if ($v_list[$i] == "..") {
$v_skip++;
}
else if ($v_list[$i] == "") {
// ----- First '/' i.e. root slash
if ($i == 0) {
$v_result = "/".$v_result;
if ($v_skip > 0) {
// ----- It is an invalid path, so the path is not modified
// TBC
$v_result = $p_dir;
$v_skip = 0;
}
}
// ----- Last '/' i.e. indicates a directory
else if ($i == (sizeof($v_list)-1)) {
$v_result = $v_list[$i];
}
// ----- Double '/' inside the path
else {
// ----- Ignore only the double '//' in path,
// but not the first and last '/'
}
}
else {
// ----- Look for item to skip
if ($v_skip > 0) {
$v_skip--;
}
else {
$v_result = $v_list[$i].($i!=(sizeof($v_list)-1)?"/".$v_result:"");
}
}
}
// ----- Look for skip
if ($v_skip > 0) {
while ($v_skip > 0) {
$v_result = '../'.$v_result;
$v_skip--;
}
}
}
// ----- Return
return $v_result;
}
// --------------------------------------------------------------------------------
// --------------------------------------------------------------------------------
// Function : PclZipUtilPathInclusion()
// Description :
// This function indicates if the path $p_path is under the $p_dir tree. Or,
// said in an other way, if the file or sub-dir $p_path is inside the dir
// $p_dir.
// The function indicates also if the path is exactly the same as the dir.
// This function supports path with duplicated '/' like '//', but does not
// support '.' or '..' statements.
// Parameters :
// Return Values :
// 0 if $p_path is not inside directory $p_dir
// 1 if $p_path is inside directory $p_dir
// 2 if $p_path is exactly the same as $p_dir
// --------------------------------------------------------------------------------
function PclZipUtilPathReduction($p_dir) { $v_result = ""; // ----- Look for not empty path if ($p_dir != "") { // ----- Explode path by directory names $v_list = explode("/", $p_dir); // ----- Study directories from last to first $v_skip = 0; for ($i=sizeof($v_list)-1; $i>=0; $i--) { // ----- Look for current path if ($v_list[$i] == ".") { // ----- Ignore this directory // Should be the first $i=0, but no check is done } else if ($v_list[$i] == "..") { $v_skip++; } else if ($v_list[$i] == "") { // ----- First '/' i.e. root slash if ($i == 0) { $v_result = "/".$v_result; if ($v_skip > 0) { // ----- It is an invalid path, so the path is not modified // TBC $v_result = $p_dir; $v_skip = 0; } } // ----- Last '/' i.e. indicates a directory else if ($i == (sizeof($v_list)-1)) { $v_result = $v_list[$i]; } // ----- Double '/' inside the path else { // ----- Ignore only the double '//' in path, // but not the first and last '/' } } else { // ----- Look for item to skip if ($v_skip > 0) { $v_skip--; } else { $v_result = $v_list[$i].($i!=(sizeof($v_list)-1)?"/".$v_result:""); } } } // ----- Look for skip if ($v_skip > 0) { while ($v_skip > 0) { $v_result = '../'.$v_result; $v_skip--; } } } // ----- Return return $v_result; } // -------------------------------------------------------------------------------- // -------------------------------------------------------------------------------- // Function : PclZipUtilPathInclusion() // Description : // This function indicates if the path $p_path is under the $p_dir tree. Or, // said in an other way, if the file or sub-dir $p_path is inside the dir // $p_dir. // The function indicates also if the path is exactly the same as the dir. // This function supports path with duplicated '/' like '//', but does not // support '.' or '..' statements. // Parameters : // Return Values : // 0 if $p_path is not inside directory $p_dir // 1 if $p_path is inside directory $p_dir // 2 if $p_path is exactly the same as $p_dir // --------------------------------------------------------------------------------
function PclZipUtilPathReduction($p_dir)
  {
    $v_result = "";

    // ----- Look for not empty path
    if ($p_dir != "") {
      // ----- Explode path by directory names
      $v_list = explode("/", $p_dir);

      // ----- Study directories from last to first
      $v_skip = 0;
      for ($i=sizeof($v_list)-1; $i>=0; $i--) {
        // ----- Look for current path
        if ($v_list[$i] == ".") {
          // ----- Ignore this directory
          // Should be the first $i=0, but no check is done
        }
        else if ($v_list[$i] == "..") {
		  $v_skip++;
        }
        else if ($v_list[$i] == "") {
		  // ----- First '/' i.e. root slash
		  if ($i == 0) {
            $v_result = "/".$v_result;
		    if ($v_skip > 0) {
		        // ----- It is an invalid path, so the path is not modified
		        // TBC
		        $v_result = $p_dir;
                $v_skip = 0;
		    }
		  }
		  // ----- Last '/' i.e. indicates a directory
		  else if ($i == (sizeof($v_list)-1)) {
            $v_result = $v_list[$i];
		  }
		  // ----- Double '/' inside the path
		  else {
            // ----- Ignore only the double '//' in path,
            // but not the first and last '/'
		  }
        }
        else {
		  // ----- Look for item to skip
		  if ($v_skip > 0) {
		    $v_skip--;
		  }
		  else {
            $v_result = $v_list[$i].($i!=(sizeof($v_list)-1)?"/".$v_result:"");
		  }
        }
      }

      // ----- Look for skip
      if ($v_skip > 0) {
        while ($v_skip > 0) {
            $v_result = '../'.$v_result;
            $v_skip--;
        }
      }
    }

    // ----- Return
    return $v_result;
  }
  // --------------------------------------------------------------------------------

  // --------------------------------------------------------------------------------
  // Function : PclZipUtilPathInclusion()
  // Description :
  //   This function indicates if the path $p_path is under the $p_dir tree. Or,
  //   said in an other way, if the file or sub-dir $p_path is inside the dir
  //   $p_dir.
  //   The function indicates also if the path is exactly the same as the dir.
  //   This function supports path with duplicated '/' like '//', but does not
  //   support '.' or '..' statements.
  // Parameters :
  // Return Values :
  //   0 if $p_path is not inside directory $p_dir
  //   1 if $p_path is inside directory $p_dir
  //   2 if $p_path is exactly the same as $p_dir
  // --------------------------------------------------------------------------------

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