initial commit

git-svn-id: file:///var/svn/portage@1 3218660a-b0cf-4799-a991-8ddcc5b9e0f3

1 files changed, 78 insertions, 0 deletions

diff --git a/import.functions.php b/import.functions.php
new file mode 100644
index 0000000..d5407b7
--- /dev/null
+++ b/import.functions.php
@@ -0,0 +1,78 @@
+<?
+
+
+	/**
+	* Create the 'extended version' of the original versions,
+	* which is basically numerical version schemes padded
+	* with zeroes to be able to be sorted numerically.
+	*
+	* @param array indexed array of original versions (pv)
+	* @return array of extended versions with original version as key
+	*/
+	function extendVersions($arr) {	
+	
+		if(!count($arr))
+			return array();
+		
+		// Check if we have any dots in versions
+		// If we don't, it's fine as is -- just pad the zeroes
+		if(!(count($arr) && preg_grep('/\./', $arr))) {
+		
+			foreach($arr as $value) {
+				$max = max($max, strlen($value));
+			}
+			
+			foreach($arr as $key => $value) {
+				$ext[$key] = str_pad($value, $max, 0, STR_PAD_LEFT);
+			}
+			
+			return $ext;
+			
+		}
+		
+		// Keep a count of the max number of version breaks (dots)
+		// array('1.2', '2.12.3') would have a max of 2.
+		$max = 0;
+		foreach($arr as $key => $str) {
+		
+			$max = max($max, substr_count($str, '.'));
+			$arr_extended[$key] = explode('.', $str);
+		}
+		
+		$max++;
+		
+		// Get the max *numerical* lengths for each split
+		// 2.12.3 would create: array(1, 2, 1);
+		foreach($arr_extended as $tmp) {
+			foreach($tmp as $key => $value) {
+				$value = preg_replace('/\D/', '', $value);
+				$arr_max_strlen[$key] = max($arr_max_strlen[$key], strlen($value));
+			}
+		}
+
+		// Now pad everything to the extended version
+		foreach($arr as $key => $value) {
+		
+			// Split the version into each of its dot values
+			$explode = explode(".", $value);
+			
+			// Pad and/or create the version for each dot version
+			for($x = 0; $x < $max; $x++) {
+			
+				// Yes, you *have* to pad the first number too.  Otherwise PHP
+				// will compare it wrong if there's more than one decimal point.
+				if($x == 0)
+					$ext[$key] = str_pad($explode[$x], $arr_max_strlen[$x], 0, STR_PAD_LEFT);
+				if($x > 0)
+					$ext[$key] .= ".".str_pad($explode[$x], $arr_max_strlen[$x], 0, STR_PAD_LEFT);
+					
+			}
+		
+		}
+		
+		asort($ext);
+		
+		return $ext;
+		
+	}
+?>
\ No newline at end of file