refactoring to make adding new formats possible

cps/book_formats.py

@@ -0,0 +1,50 @@
+__author__ = 'lemmsh'
+
+import uploader
+import os
+try:
+    from wand.image import Image
+    use_generic_pdf_cover = False
+except ImportError, e:
+    use_generic_pdf_cover = True
+
+def process(tmp_file_path, original_file_name, original_file_extension):
+    if (".PDF" == original_file_extension.upper()):
+        return pdf_meta(tmp_file_path, original_file_name, original_file_extension)
+    else: return None
+
+
+def pdf_meta(tmp_file_path, original_file_name, original_file_extension):
+    from PyPDF2 import PdfFileReader
+    pdf = PdfFileReader(open(tmp_file_path, 'rb'))
+    doc_info = pdf.getDocumentInfo()
+    print("!!!!!!!!!!!!!!")
+    print(doc_info.producer)
+    if (doc_info is not None):
+        author = doc_info.author
+        title = doc_info.title
+        subject = doc_info.subject
+    else:
+        author = "Unknown"
+        title = original_file_name
+        subject = ""
+    return uploader.BookMeta(
+        file_path = tmp_file_path,
+        extension = original_file_extension,
+        title = title,
+        author = author,
+        cover = pdf_preview(tmp_file_path, original_file_name),
+        description = subject,
+        tags = "",
+        series = "",
+        series_id="")
+
+def pdf_preview(tmp_file_path, tmp_dir):
+    if use_generic_pdf_cover:
+        return None
+    else:
+        cover_file_name = os.path.splitext(tmp_file_path)[0] + ".cover.jpg"
+        with Image(filename=tmp_file_path + "[0]", resolution=150) as img:
+            img.compression_quality = 88
+            img.save(filename=os.path.join(tmp_dir, cover_file_name))
+        return cover_file_name