add pacman

Signed-off-by: Mattias Andrée <maandree@operamail.com>

1 files changed, 141 insertions, 0 deletions

diff --git a/src/plugins/pacman.py b/src/plugins/pacman.py
new file mode 100644
index 0000000..5d2aef8
--- /dev/null
+++ b/src/plugins/pacman.py
@@ -0,0 +1,141 @@
+# -*- python -*-
+'''
+xpybar – xmobar replacement written in python
+Copyright © 2014  Mattias Andrée (maandree@member.fsf.org)
+
+This program is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 3 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program.  If not, see <http://www.gnu.org/licenses/>.
+'''
+
+from util import *
+
+
+class Pacman:
+    '''
+    Retrieve package information using Arch Linux's pacman
+    
+    Unique variables for installed:
+    
+    @variable  required:list<str>                  Packages that require this package
+    @variable  optrequired:list<str>               Packages that this package is optional for
+    @variable  install_date:str                    The date and time the package was installed
+    @variable  install_explicitly:bool             Whether the package was installed explicitly
+    @variable  install_script:bool                 Whether the package contains and install script
+    
+    Unique variables for not installed:
+    
+    @variable  repository:str                      The repository the package is located in
+    @variable  download_size:float                 The download size of the package in kilobytes
+    
+    Common variables:
+    
+    @variable  name:str                            The name of the package
+    @variable  version:str                         The version of the package
+    @variable  description:str                     The description of the package
+    @variable  architecture:str                    The microprocessor architecture of the package
+    @variable  url:str                             The home URL of the project
+    @variable  licenses:list<str>                  The licenses used by the package
+    @variable  groups:list<str>                    Package groups the package is a member of
+    @variable  provides:list<str>                  Packages the package provides
+    @variable  depends:list<str>                   Packages the package depends on
+    @variable  optdepends:list<(str, str?, bool)>  Optional packages for this package, stored as a tuple of:
+                                                     The name of the package, the reason for using it,
+                                                     and whether or not it is installed.
+    @variable  conflicts:list<str>                 Packages the package conflicts with
+    @variable  replaces:list<str>                  Packages the package replaces
+    @variable  installed_size:float                The installed size of the package in kilobytes
+    @variable  packager:str?                       The packager of the package, `None` if unknown
+    @variable  build_date:str                      The date and time the package was built
+    @variable  validated_by:list<str>              Methods used to validate the package's integrity
+    '''
+    
+    
+    def __init__(self, package, installed):
+        '''
+        Constructor
+        
+        @param  package:str     The name of the package, can be %repo/%name
+        @param  installed:bool  Whether it is information about the installed version that should be fetched
+        '''
+        verb = '-Qi' if installed else '-Si' # -Sii and -Qii, while a bit different, would get us more info.
+        info = spawn_read('pacman', verb, package).split('\n') # TODO fixate locale
+        if len(info) == 1:
+            raise Exception('Package `%s\' is not installed' % package)
+        
+        last_field = None
+        fields = {}
+        
+        for line in info:
+            continued = line.startswith(' ')
+            line = list(filter(lambda cell : not cell == '', line.split(' ')))
+            colon = -1
+            if not continued:
+                for i in range(len(line)):
+                    if line[i] == ':':
+                        colon = i
+                        break
+            field = last_field
+            if colon >= 0:
+                field = ' '.join(line[:colon])
+                line = line[colon + 1:]
+            if field not in fields:
+                fields[field] = []
+            fields[field].append(line)
+        
+        
+        word = lambda x : fields[x][0][0]
+        text = lambda x : ' '.join(fields[x][0])
+        plur = lambda x : list(filter(lambda w : not w == 'None', fields[x][0]))
+        
+        if installed:
+            self.required           = plur('Required By')
+            self.optrequired        = plur('Optional For')
+            self.install_date       = text('Install Date')
+            self.install_explicitly = text('Install Reason') == 'Explicitly installed'
+            self.install_script     = text('Install Script') == 'Yes'
+        
+        if not installed:
+            self.repository    = word('Name')
+            self.download_size = float(word('Download Size'))
+        
+        self.name           = word('Name')
+        self.version        = word('Version')
+        self.description    = text('Description')
+        self.architecture   = word('Architecture')
+        self.url            = text('URL')
+        self.licenses       = plur('Licences')
+        self.groups         = plur('Groups')
+        self.provides       = plur('Provides')
+        self.depends        = plur('Depends On')
+        self.optdepends     = []
+        optdepends_         = [' '.join(x) for x in fields['Optional Deps']]
+        for deps in optdepends_:
+            inst = deps.endswith(' [installed]')
+            if installed:
+                deps = deps[:-len(' [installed]')]
+            if ': ' in deps:
+                deps = deps.split(': ')
+                name = deps[0]
+                deps = ': '.join(deps[1:])
+                self.optdepends.append((name, deps, inst))
+            else:
+                self.optdepends.append((deps, None, inst))
+        self.conflicts      = plur('Conflicts With')
+        self.replaces       = plur('Replaces')
+        self.installed_size = float(word('Installed Size'))
+        self.packager       = text('Packager')
+        if self.packager == 'Unknown Packager':
+            self.packager = None
+        self.build_date     = text('Build Date')
+        self.validated_by   = list(filter(lambda x : not x == 'Sum', plur('Validated By')))
+