add example: minimal userlan OO library

1 files changed, 78 insertions, 0 deletions

diff --git a/examples/librpm.php b/examples/librpm.php
new file mode 100644
index 0000000..90082e0
--- /dev/null
+++ b/examples/librpm.php
@@ -0,0 +1,78 @@
+<?php
+/**
+ * Minimal userland OO library
+ **/
+namespace Remi\RPM;
+
+abstract class Common {
+	protected $info = NULL;
+
+	public function __get($name) {
+		switch ($name) {
+			case 'EVR':
+			case 'NEVR':
+			case 'NEVRA':
+				$ret = '';
+				if (substr($name, 0, 1) === 'N') {
+					$ret = $this->info['Name'] . '-';
+				}
+				if (isset($this->info['Epoch'])) {
+					$ret .= $this->info['Epoch'] . ':';
+				}
+				$ret .= $this->info['Version'] . '-' . $this->info['Release'];
+
+				if (substr($name, -1) === 'A') {
+					$ret .= '.' . $this->info['Arch'];
+				}
+				return $ret;
+			default:
+				if (isset($this->info[$name])) {
+					return $this->info[$name];
+				}
+				return NULL;
+		}
+	}
+}
+
+/**
+ * From a RPM file
+ *
+ * $a = new \Remi\RPM\File(dirname(__DIR__) . '/tests/bidon.rpm');
+ * var_dump($a->Vendor);
+ * var_dump($a->NEVRA);
+ **/
+class File extends Common {
+
+	public function __construct($path) {
+		$info = rpminfo($path, true, $error);
+
+		if ($error) {
+			throw new \RuntimeException($error);
+		} else {
+			$this->info = $info;
+		}
+	}
+}
+
+/**
+ * From an installed RPM
+ *
+ * $a = new \Remi\RPM\Package('php');
+ * var_dump($a->License);
+ * var_dump($a->NEVRA);
+ **/
+class Package extends Common {
+
+	public function __construct($name, $index=0) {
+		$info = rpmdbinfo($name, true);
+
+		if (!$info) {
+			throw new \RuntimeException("$name not found");
+		} else if ($index < 0 || $index >= count($info)) {
+			throw new \OutOfBoundsException("$index not in range");
+		} else {
+			$this->info = $info[$index];
+		}
+	}
+}
+