Switch fetch-ebook-metadata to use the new metadata download framework

src/calibre/ebooks/metadata/sources/cli.py

@@ -0,0 +1,79 @@
+#!/usr/bin/env python
+# vim:fileencoding=UTF-8:ts=4:sw=4:sta:et:sts=4:ai
+from __future__ import (unicode_literals, division, absolute_import,
+                        print_function)
+
+__license__   = 'GPL v3'
+__copyright__ = '2011, Kovid Goyal <kovid@kovidgoyal.net>'
+__docformat__ = 'restructuredtext en'
+
+import sys, textwrap
+from io import BytesIO
+from threading import Event
+
+from calibre import prints
+from calibre.utils.config import OptionParser
+from calibre.ebooks.metadata import string_to_authors
+from calibre.ebooks.metadata.opf2 import metadata_to_opf
+from calibre.ebooks.metadata.sources.base import create_log
+from calibre.ebooks.metadata.sources.identify import identify
+
+def option_parser():
+    parser = OptionParser(textwrap.dedent(
+        '''\
+        %prog [options]
+
+        Fetch book metadata from online sources. You must specify at least one
+        of title, authors or ISBN.
+        '''
+    ))
+    parser.add_option('-t', '--title', help='Book title')
+    parser.add_option('-a', '--authors', help='Book author(s)')
+    parser.add_option('-i', '--isbn', help='Book ISBN')
+    parser.add_option('-v', '--verbose', default=False, action='store_true',
+                      help='Print the log to the console (stderr)')
+    parser.add_option('-o', '--opf', help='Output the metadata in OPF format')
+    parser.add_option('-d', '--timeout', default='30',
+            help='Timeout in seconds. Default is 30')
+
+    return parser
+
+def main(args=sys.argv):
+    parser = option_parser()
+    opts, args = parser.parse_args(args)
+
+    buf = BytesIO()
+    log = create_log(buf)
+    abort = Event()
+
+    authors = []
+    if opts.authors:
+        authors = string_to_authors(opts.authors)
+
+    identifiers = {}
+    if opts.isbn:
+        identifiers['isbn'] = opts.isbn
+
+    results = identify(log, abort, title=opts.title, authors=authors,
+            identifiers=identifiers, timeout=int(opts.timeout))
+
+    log = buf.getvalue()
+
+    if not results:
+        print (log, file=sys.stderr)
+        prints('No results found', file=sys.stderr)
+        raise SystemExit(1)
+
+    result = results[0]
+    result = (metadata_to_opf(result) if opts.opf else
+                    unicode(result).encode('utf-8'))
+
+    if opts.verbose:
+        print (log, file=sys.stderr)
+
+    print (result)
+
+    return 0
+
+if __name__ == '__main__':
+    sys.exit(main())

src/calibre/ebooks/metadata/sources/google.py

@@ -271,6 +271,9 @@ class GoogleBooks(Source):
             identifiers={}, timeout=30):
         query = self.create_query(log, title=title, authors=authors,
                 identifiers=identifiers)
+        if not query:
+            log.error('Insufficient metadata to construct query')
+            return
         br = self.browser
         try:
             raw = br.open_novisit(query, timeout=timeout).read()

src/calibre/linux.py

@@ -30,7 +30,7 @@ entry_points = {
              'calibre-customize  = calibre.customize.ui:main',
              'calibre-complete   = calibre.utils.complete:main',
              'pdfmanipulate      = calibre.ebooks.pdf.manipulate.cli:main',
-             'fetch-ebook-metadata = calibre.ebooks.metadata.fetch:main',
+             'fetch-ebook-metadata = calibre.ebooks.metadata.sources.cli:main',
              'epub-fix           = calibre.ebooks.epub.fix.main:main',
              'calibre-smtp = calibre.utils.smtp:main',
         ],
@@ -183,7 +183,7 @@ class PostInstall:
             from calibre.ebooks.lrf.lrfparser import option_parser as lrf2lrsop
             from calibre.gui2.lrf_renderer.main import option_parser as lrfviewerop
             from calibre.gui2.viewer.main import option_parser as viewer_op
-            from calibre.ebooks.metadata.fetch import option_parser as fem_op
+            from calibre.ebooks.metadata.sources.cli import option_parser as fem_op
             from calibre.gui2.main import option_parser as guiop
             from calibre.utils.smtp import option_parser as smtp_op
             from calibre.library.server.main import option_parser as serv_op