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cvm/frontend/includes/include.parsing.php

95 lines
2.0 KiB
PHP

<?php
/*
* CVM is more free software. It is licensed under the WTFPL, which
* allows you to do pretty much anything with it, without having to
* ask permission. Commercial use is allowed, and no attribution is
* required. We do politely request that you share your modifications
* to benefit other developers, but you are under no enforced
* obligation to do so :)
*
* Please read the accompanying LICENSE document for the full WTFPL
* licensing text.
*/
if(!isset($_CVM)) { die("Unauthorized."); }
function split_whitespace($input)
{
return preg_split("/\s+/", $input);
}
function split_lines($input)
{
$lines = explode("/n", $input);
foreach($lines as &$line)
{
$line = trim($line);
}
return $lines;
}
function shrink_command($command)
{
$command = preg_replace("/(\t+|\n)/", " ", $command);
$command = str_replace("/r", "", $command);
return $command;
}
function parse_size($size, $multiplier = 1024)
{
/* Note that this function will always assume bytes and the given multiplier, regardless of
* what is actually specified. */
if(preg_match("/(-?[0-9.,]+)\s*(([kKmMgGtTpPeEzZyY]?)([iI]?)([bB]?))/", $size, $matches))
{
$number = (float) $matches[1];
$unit = $matches[2];
$prefix = $matches[3];
$suffix = $matches[5];
if(empty($prefix))
{
/* Size is in bytes. */
return $number;
}
else
{
switch(strtolower($prefix))
{
case "y":
$number = $number * $multiplier;
case "z":
$number = $number * $multiplier;
case "e":
$number = $number * $multiplier;
case "p":
$number = $number * $multiplier;
case "t":
$number = $number * $multiplier;
case "g":
$number = $number * $multiplier;
case "m":
$number = $number * $multiplier;
case "k":
$number = $number * $multiplier;
break;
default:
throw new ParsingException("No valid unit was specified.");
}
return $number;
}
}
elseif(is_numeric($size))
{
return (int) $size;
}
else
{
throw new ParsingException("The given size specification could not be parsed.");
}
}
?>