From 0501b637a3177cce441166b5fcfe27c9bd9fbe0f Mon Sep 17 00:00:00 2001
From: thomascube <thomas@roundcube.net>
Date: Tue, 18 Jan 2011 13:00:57 -0500
Subject: [PATCH] Merge branch devel-addressbook (r4193:4382) back into trunk
---
program/include/rcube_shared.inc | 19 +++++++++++++++++++
1 files changed, 19 insertions(+), 0 deletions(-)
diff --git a/program/include/rcube_shared.inc b/program/include/rcube_shared.inc
index 36c832e..83eefd6 100644
--- a/program/include/rcube_shared.inc
+++ b/program/include/rcube_shared.inc
@@ -485,6 +485,25 @@
return $mime_type;
}
+
+/**
+ * Detect image type of the given binary data by checking magic numbers
+ *
+ * @param string Binary file content
+ * @return string Detected mime-type or jpeg as fallback
+ */
+function rc_image_content_type($data)
+{
+ $type = 'jpeg';
+ if (preg_match('/^\x89\x50\x4E\x47/', $data)) $type = 'png';
+ else if (preg_match('/^\x47\x49\x46\x38/', $data)) $type = 'gif';
+ else if (preg_match('/^\x00\x00\x01\x00/', $data)) $type = 'ico';
+// else if (preg_match('/^\xFF\xD8\xFF\xE0/', $data)) $type = 'jpeg';
+
+ return 'image/' . $type;
+}
+
+
/**
* A method to guess encoding of a string.
*
--
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