daklib/ls.py

   1 """List packages according to various criteria
   2
   3 @copyright: 2014, Ansgar Burchardt <ansgar@debian.org>
   4 @license: GPL-2+
   5 """
   6
   7 # This program is free software; you can redistribute it and/or modify
   8 # it under the terms of the GNU General Public License as published by
   9 # the Free Software Foundation; either version 2 of the License, or
  10 # (at your option) any later version.
  11 #
  12 # This program is distributed in the hope that it will be useful,
  13 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15 # GNU General Public License for more details.
  16 #
  17 # You should have received a copy of the GNU General Public License
  18 # along with this program; if not, write to the Free Software
  19 # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  20
  21 import sqlalchemy.sql as sql
  22 import daklib.daksql as daksql
  23
  24 from daklib.dbconn import DBConn
  25 from collections import defaultdict
  26
  27 def list_packages(packages, suites=None, components=None, architectures=None, binary_types=None,
  28                   source_and_binary=False, regex=False,
  29                   format=None, highest=None):
  30     session = DBConn().session()
  31     try:
  32         t = DBConn().view_package_list
  33
  34         comparison_operator = "~" if regex else "="
  35
  36         where = sql.false()
  37         for package in packages:
  38             where = where | t.c.package.op(comparison_operator)(package)
  39             if source_and_binary:
  40                 where = where | t.c.source.op(comparison_operator)(package)
  41
  42         if suites is not None:
  43             where = where & (t.c.suite.in_(suites) | t.c.codename.in_(suites))
  44         if components is not None:
  45             where = where & t.c.component.in_(components)
  46         if architectures is not None:
  47             where = where & t.c.architecture.in_(architectures)
  48         if binary_types is not None:
  49             where = where & t.c.type.in_(binary_types)
  50
  51         if format is None:
  52             c_architectures = daksql.string_agg(t.c.architecture, ', ', order_by=[t.c.architecture_is_source.desc(), t.c.architecture])
  53             query = sql.select([t.c.package, t.c.version, t.c.display_suite, c_architectures]) \
  54                        .where(where) \
  55                        .group_by(t.c.package, t.c.version, t.c.display_suite) \
  56                        .order_by(t.c.package, t.c.version, t.c.display_suite)
  57             result = session.execute(query).fetchall()
  58
  59             if len(result) == 0:
  60                 raise StopIteration
  61
  62             lengths = {
  63                 'package': max(10, max(len(row[t.c.package]) for row in result)),
  64                 'version': max(13, max(len(row[t.c.version]) for row in result)),
  65                 'suite':   max(10, max(len(row[t.c.display_suite]) for row in result))
  66             }
  67             format = "{0:{lengths[package]}} | {1:{lengths[version]}} | {2:{lengths[suite]}} | {3}"
  68
  69             for row in result:
  70                 yield format.format(row[t.c.package], row[t.c.version], row[t.c.display_suite], row[c_architectures], lengths=lengths)
  71         elif format in ('control-suite', 'heidi'):
  72             query = sql.select([t.c.package, t.c.version, t.c.architecture]).where(where)
  73             result = session.execute(query)
  74             for row in result:
  75                 yield "{0} {1} {2}".format(row[t.c.package], row[t.c.version], row[t.c.architecture])
  76         elif format == "python":
  77             c_architectures = daksql.string_agg(t.c.architecture, ',', order_by=[t.c.architecture_is_source.desc(), t.c.architecture])
  78             query = sql.select([t.c.package,
  79                                 t.c.version,
  80                                 t.c.display_suite,
  81                                 c_architectures,
  82                                 t.c.source,
  83                                 t.c.source_version,
  84                                 t.c.component]) \
  85                 .where(where) \
  86                 .group_by(t.c.package,
  87                           t.c.version,
  88                           t.c.display_suite,
  89                           t.c.source,
  90                           t.c.component,
  91                           t.c.source_version)
  92             result = session.execute(query).fetchall()
  93
  94             if len(result) == 0:
  95                 raise StopIteration
  96
  97             val = lambda: defaultdict(val)
  98             ret = val()
  99             for row in result:
 100                 ret[row[t.c.package]] \
 101                    [row[t.c.display_suite]] \
 102                    [row[t.c.version]]={'component':      row[t.c.component],
 103                                        'architectures':  row[c_architectures].split(','),
 104                                        'source':         row[t.c.source],
 105                                        'source_version': row[t.c.source_version]
 106                                    }
 107
 108             yield ret
 109             return
 110         else:
 111             raise ValueError("Unknown output format requested.")
 112
 113         if highest is not None:
 114             query = sql.select([t.c.package, sql.func.max(t.c.version)]).where(where) \
 115                        .group_by(t.c.package).order_by(t.c.package)
 116             result = session.execute(query)
 117             yield ""
 118             for row in result:
 119                 yield "{0} ({1} {2})".format(row[0], highest, row[1])
 120     finally:
 121         session.close()