From 57d53a8a3bdfcf7f984caa5de4877857bcd4e6d4 Mon Sep 17 00:00:00 2001
From: Kovid Goyal <kovid@kovidgoyal.net>
Date: Wed, 4 May 2016 14:07:22 +0530
Subject: [PATCH] Dont use ImageMagick when building the manual

---
 manual/epub.py | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/manual/epub.py b/manual/epub.py
index cda286bb0c..3692f349c7 100644
--- a/manual/epub.py
+++ b/manual/epub.py
@@ -14,7 +14,7 @@ from calibre.ebooks.oeb.base import OPF, DC
 from calibre.ebooks.oeb.polish.container import get_container, OEB_DOCS
 from calibre.ebooks.oeb.polish.check.links import check_links, UnreferencedResource
 from calibre.ebooks.oeb.polish.pretty import pretty_html_tree, pretty_opf
-from calibre.utils.magick.draw import identify_data
+from calibre.utils.imghdr import identify
 
 class EPUBHelpBuilder(EpubBuilder):
     name = 'myepub'
@@ -40,7 +40,9 @@ class EPUBHelpBuilder(EpubBuilder):
         for img in root.xpath('//*[local-name() = "img" and (@class = "float-right-img" or @class = "float-left-img")]'):
             if 'style' not in img.attrib:
                 imgname = container.href_to_name(img.get('src'), name)
-                width, height, fmt = identify_data(container.raw_data(imgname))
+                fmt, width, height = identify(container.raw_data(imgname))
+                if width == -1:
+                    raise ValueError('Failed to read size of: %s' % imgname)
                 img.set('style', 'width: %dpx; height: %dpx' % (width, height))
 
     def fix_opf(self, container):