From 87957f1a6b6e55664837f6493981094868b76cc1 Mon Sep 17 00:00:00 2001
From: Oleg Broytman <phd@phdru.name>
Date: Mon, 23 May 2016 23:27:54 +0300
Subject: [PATCH] Search books by language

---
 docs-ru/command_line.rst |  3 ++-
 docs/command_line.rst    |  3 ++-
 scripts/ml-search.py     | 11 +++++++++--
 3 files changed, 13 insertions(+), 4 deletions(-)

diff --git a/docs-ru/command_line.rst b/docs-ru/command_line.rst
index 4cb958f..640607d 100644
--- a/docs-ru/command_line.rst
+++ b/docs-ru/command_line.rst
@@ -100,7 +100,7 @@ ml-search.py
 
 Использование::
 
-    ml-search.py [-i/-I] [-t/-s/-f] books [-t title] [-s series] [-a archive] [-f file] [-d] [-e ext]
+    ml-search.py [-i/-I] [-t/-s/-f] books [-t title] [-s series] [-a archive] [-f file] [-d] [-e ext] [-l lang]
 
 Искать и печатать список книг по заголовку, серии, архиву, имени файла.
 
@@ -114,6 +114,7 @@ ml-search.py
                            повторите эту опцию несколько раз, чтобы
                            получить ещё больше деталей
     -e, --ext ext          Искать по расширению имени файла
+    -l, --lang lang        Искать по языку
 
 По умолчанию программы выводит список заголовков найденных книг. При
 использовании опции `-d` также выводится список авторов и жанров, а
diff --git a/docs/command_line.rst b/docs/command_line.rst
index 99fb72e..837a415 100644
--- a/docs/command_line.rst
+++ b/docs/command_line.rst
@@ -99,7 +99,7 @@ Book search
 
 Usage::
 
-    ml-search.py [-i/-I] [-t/-s/-f] books [-t title] [-s series] [-a archive] [-f file] [-d] [-e ext]
+    ml-search.py [-i/-I] [-t/-s/-f] books [-t title] [-s series] [-a archive] [-f file] [-d] [-e ext] [-l lang]
 
 Search and print a list of books by title, series, archive or file name.
 
@@ -112,6 +112,7 @@ Options::
     -d, --details          Output more details about books;
                            repeat for even more details
     -e, --ext ext          Search by file extension
+    -l, --lang lang        Search by language
 
 By default the program prints only titles of the found book. With one
 option `-d` it also prints the list of authors and genres, and also
diff --git a/scripts/ml-search.py b/scripts/ml-search.py
index b5b34c4..4757628 100755
--- a/scripts/ml-search.py
+++ b/scripts/ml-search.py
@@ -5,7 +5,7 @@ import sys
 from sqlobject.sqlbuilder import CONCAT
 
 from m_lib.defenc import default_encoding
-from m_librarian.db import Author, Book, Extension, open_db
+from m_librarian.db import Author, Book, Extension, Language, open_db
 from m_librarian.search import mk_search_conditions, \
     search_authors, search_books, \
     search_extensions, search_genres, search_languages
@@ -61,7 +61,7 @@ def _search_books(case_sensitive, search_type, args):
             values[column] = unicode(value, default_encoding)
     if case_sensitive is None:
         test_values = values.copy()
-        for column in 'ext', :
+        for column in 'ext', 'lang':
             value = getattr(args, column)
             if value:
                 test_values[column] = unicode(value, default_encoding)
@@ -72,6 +72,12 @@ def _search_books(case_sensitive, search_type, args):
             Extension, search_type, case_sensitive,
             {'name': args.ext})
         join_expressions.extend(conditions)
+    if args.lang:
+        join_expressions.append(Book.j.language)
+        conditions = mk_search_conditions(
+            Language, search_type, case_sensitive,
+            {'name': args.lang})
+        join_expressions.extend(conditions)
     for book in search_books(search_type, case_sensitive, values,
                              join_expressions,
                              orderBy=('series', 'ser_no', 'title')):
@@ -179,6 +185,7 @@ if __name__ == '__main__':
                         help='output more details about books; '
                         'repeat for even more details')
     parser.add_argument('-e', '--ext', help='search by file extension')
+    parser.add_argument('-l', '--lang', help='search by language')
     parser.set_defaults(func=_search_books)
 
     parser = subparsers.add_parser('ext', help='Search extensions')
-- 
2.39.5