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calibredb list: Add an option to limit the number of results

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Kovid Goyal 2013-06-13 12:28:41 +05:30
parent aa47ab279e
commit 4e6a8ed649
1 changed files with 5 additions and 2 deletions
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7
src/calibre/library/cli.py
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@ -64,13 +64,15 @@ def get_db(dbpath, options):
return LibraryDatabase2(dbpath) return LibraryDatabase2(dbpath)
def do_list(db, fields, afields, sort_by, ascending, search_text, line_width, separator, def do_list(db, fields, afields, sort_by, ascending, search_text, line_width, separator,
prefix, subtitle='Books in the calibre database'): prefix, limit, subtitle='Books in the calibre database'):
from calibre.utils.terminal import ColoredStream, geometry from calibre.utils.terminal import ColoredStream, geometry
if sort_by: if sort_by:
db.sort(sort_by, ascending) db.sort(sort_by, ascending)
if search_text: if search_text:
db.search(search_text) db.search(search_text)
data = db.get_data_as_dict(prefix, authors_as_string=True) data = db.get_data_as_dict(prefix, authors_as_string=True)
if limit > -1:
data = data[:limit]
fields = ['id'] + fields fields = ['id'] + fields
title_fields = fields title_fields = fields
def field_name(f): def field_name(f):
@ -170,6 +172,7 @@ List the books available in the calibre database.
help=_('The maximum width of a single line in the output. Defaults to detecting screen size.')) help=_('The maximum width of a single line in the output. Defaults to detecting screen size.'))
parser.add_option('--separator', default=' ', help=_('The string used to separate fields. Default is a space.')) parser.add_option('--separator', default=' ', help=_('The string used to separate fields. Default is a space.'))
parser.add_option('--prefix', default=None, help=_('The prefix for all file paths. Default is the absolute path to the library folder.')) parser.add_option('--prefix', default=None, help=_('The prefix for all file paths. Default is the absolute path to the library folder.'))
parser.add_option('--limit', default=-1, type=int, help=_('The maximum number of results to display. Default: all'))
return parser return parser
@ -205,7 +208,7 @@ def command_list(args, dbpath):
return 1 return 1
print do_list(db, fields, afields, opts.sort_by, opts.ascending, opts.search, opts.line_width, opts.separator, print do_list(db, fields, afields, opts.sort_by, opts.ascending, opts.search, opts.line_width, opts.separator,
opts.prefix) opts.prefix, opts.limit)
return 0 return 0