Merge branch 'pretty' into commerce

[librarian.git] / librarian / mobi.py

diff --git a/librarian/mobi.py b/librarian/mobi.py
new file mode 100755 (executable)
index 0000000..1e7569b
--- /dev/null
+++ b/librarian/mobi.py
@@ -0,0 +1,60 @@
+# -*- coding: utf-8 -*-
+#
+# This file is part of Librarian, licensed under GNU Affero GPLv3 or later.
+# Copyright © Fundacja Nowoczesna Polska. See NOTICE for more information.
+#
+from copy import deepcopy
+import os
+import subprocess
+from tempfile import NamedTemporaryFile
+
+from librarian import OutputFile
+from librarian.cover import WLCover
+from librarian import get_resource
+
+
+def transform(wldoc, verbose=False,
+              sample=None, cover=None, flags=None):
+    """ produces a MOBI file
+
+    wldoc: a WLDocument
+    sample=n: generate sample e-book (with at least n paragraphs)
+    cover: a cover.Cover object
+    flags: less-advertising,
+    """
+
+    document = deepcopy(wldoc)
+    del wldoc
+    book_info = document.book_info
+
+    # provide a cover by default
+    if not cover:
+        cover = WLCover
+    cover_file = NamedTemporaryFile(suffix='.png', delete=False)
+    c = cover(book_info)
+    c.save(cover_file)
+
+    if cover.uses_dc_cover:
+        if document.book_info.cover_by:
+            document.edoc.getroot().set('data-cover-by', document.book_info.cover_by)
+        if document.book_info.cover_source:
+            document.edoc.getroot().set('data-cover-source', document.book_info.cover_source)
+
+    if not flags:
+        flags = []
+    flags = list(flags) + ['without-fonts']
+    epub = document.as_epub(verbose=verbose, sample=sample, html_toc=True,
+            flags=flags, style=get_resource('mobi/style.css'))
+
+    if verbose:
+        kwargs = {}
+    else:
+        devnull = open("/dev/null", 'w')
+        kwargs = {"stdout": devnull, "stderr": devnull}
+
+    output_file = NamedTemporaryFile(prefix='librarian', suffix='.mobi', delete=False)
+    output_file.close()
+    subprocess.check_call(['ebook-convert', epub.get_filename(), output_file.name,
+            '--no-inline-toc', '--cover=%s' % cover_file.name], **kwargs)
+    os.unlink(cover_file.name)
+    return OutputFile.from_filename(output_file.name)
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