Source Code for Module daklib.ls

  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 sqlalchemy.dialects.postgresql as pgsql 
 23   
 24  from daklib.dbconn import DBConn 
 25  from collections import defaultdict 
 26   
 27   
 28 -def list_packages(packages, suites=None, components=None, architectures=None, binary_types=None, 
 29                    source_and_binary=False, regex=False, 
 30                    format=None, highest=None): 
 31      session = DBConn().session() 
 32      try: 
 33          t = DBConn().view_package_list 
 34   
 35          comparison_operator = "~" if regex else "=" 
 36   
 37          where = sql.false() 
 38          for package in packages: 
 39              where = where | t.c.package.op(comparison_operator)(package) 
 40              if source_and_binary: 
 41                  where = where | t.c.source.op(comparison_operator)(package) 
 42   
 43          if suites is not None: 
 44              where = where & (t.c.suite.in_(suites) | t.c.codename.in_(suites)) 
 45          if components is not None: 
 46              where = where & t.c.component.in_(components) 
 47          if architectures is not None: 
 48              where = where & t.c.architecture.in_(architectures) 
 49          if binary_types is not None: 
 50              where = where & t.c.type.in_(binary_types) 
 51   
 52          if format is None: 
 53              c_architectures = sql.func.string_agg(t.c.architecture, pgsql.aggregate_order_by(', ', t.c.architecture_is_source.desc(), t.c.architecture)) 
 54              query = sql.select([t.c.package, t.c.version, t.c.display_suite, c_architectures]) \ 
 55                         .where(where) \ 
 56                         .group_by(t.c.package, t.c.version, t.c.display_suite) \ 
 57                         .order_by(t.c.package, t.c.version, t.c.display_suite) 
 58              result = session.execute(query).fetchall() 
 59   
 60              if len(result) == 0: 
 61                  return 
 62   
 63              lengths = { 
 64                  'package': max(10, max(len(row[t.c.package]) for row in result)), 
 65                  'version': max(13, max(len(row[t.c.version]) for row in result)), 
 66                  'suite':   max(10, max(len(row[t.c.display_suite]) for row in result)) 
 67              } 
 68              format = "{0:{lengths[package]}} | {1:{lengths[version]}} | {2:{lengths[suite]}} | {3}" 
 69   
 70              for row in result: 
 71                  yield format.format(row[t.c.package], row[t.c.version], row[t.c.display_suite], row[c_architectures], lengths=lengths) 
 72          elif format in ('control-suite', 'heidi'): 
 73              query = sql.select([t.c.package, t.c.version, t.c.architecture]).where(where) 
 74              result = session.execute(query) 
 75              for row in result: 
 76                  yield "{0} {1} {2}".format(row[t.c.package], row[t.c.version], row[t.c.architecture]) 
 77          elif format == "python": 
 78              c_architectures = sql.func.string_agg(t.c.architecture, pgsql.aggregate_order_by(',', t.c.architecture_is_source.desc(), t.c.architecture)) 
 79              query = sql.select([t.c.package, 
 80                                  t.c.version, 
 81                                  t.c.display_suite, 
 82                                  c_architectures, 
 83                                  t.c.source, 
 84                                  t.c.source_version, 
 85                                  t.c.component]) \ 
 86                  .where(where) \ 
 87                  .group_by(t.c.package, 
 88                            t.c.version, 
 89                            t.c.display_suite, 
 90                            t.c.source, 
 91                            t.c.component, 
 92                            t.c.source_version) 
 93              result = session.execute(query).fetchall() 
 94   
 95              if len(result) == 0: 
 96                  return 
 97   
 98              def val(): 
 99                  return defaultdict(val) 
100              ret = val() 
101              for row in result: 
102                  ret[row[t.c.package]][row[t.c.display_suite]][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() 
122