lv2plugin.py

   1 #! /usr/bin/env python
   2 # encoding: utf-8
   3 #
   4 # Copyright (C) 2008,2009 Nedko Arnaudov <nedko@arnaudov.name>
   5 #
   6 # waf tool for lv2 plugins
   7
   8 import Object
   9 from Object import taskgen, after, before, feature
  10 from Common import install_files
  11 import os
  12 import Params
  13 import shutil
  14
  15 from Configure import g_maxlen
  16 #g_maxlen = 40
  17
  18 def display_msg(msg, status = None, color = None):
  19     sr = msg
  20     global g_maxlen
  21     g_maxlen = max(g_maxlen, len(msg))
  22     if status:
  23         print "%s :" % msg.ljust(g_maxlen),
  24         Params.pprint(color, status)
  25     else:
  26         print "%s" % msg.ljust(g_maxlen)
  27
  28 def get_lv2_install_dir():
  29     envvar = 'LV2_PATH'
  30
  31     has_lv2_path = os.environ.has_key(envvar)
  32     if has_lv2_path:
  33         display_msg("Checking LV2_PATH")
  34     else:
  35         display_msg("Checking LV2_PATH", "not set", 'YELLOW')
  36         return None
  37
  38     if has_lv2_path:
  39         lv2paths = os.environ[envvar].split(':')
  40         for lv2path in lv2paths:
  41             if not os.path.isdir(lv2path):
  42                 display_msg('  ' + lv2path, 'not directory!', 'YELLOW')
  43                 continue
  44
  45             if not os.access(lv2path, os.W_OK):
  46                 display_msg('  ' + lv2path, 'not writable', 'YELLOW')
  47                 continue
  48
  49             display_msg('  ' + lv2path, 'looks good', 'GREEN')
  50             return lv2path
  51
  52     return None
  53
  54 class lv2plugin_proxy_abstract(Object.task_gen):
  55     def __init__(self, tool, hook):
  56         Object.task_gen.__init__(self)
  57         self.tool = tool
  58         self.hook = hook
  59
  60     def the_hook(self, obj, node):
  61         #print "-------------- '%s'" % node
  62         #print "tool '%s'" % self.tool
  63         #print "tool.target '%s'" % self.tool.target
  64         #print "hook '%s'" % self.hook
  65         #print "obj '%s'" % obj
  66         #print "self '%s'" % self
  67         self.hook(self.tool, node)
  68
  69 class lv2plugin_taskgen(Object.task_gen):
  70     def __init__(self, type = 'cpp', env=None):
  71         Object.task_gen.__init__(self)
  72         self.type = type
  73         self.tool = Object.task_gen.classes[type]('shlib')
  74         if type == 'cpp':
  75             self.tool.m_type_initials = 'cpp'
  76             self.tool.features.append('cc')
  77             self.tool.ccflags = ''
  78             self.tool.mappings['.c'] = Object.task_gen.mappings['.cc']
  79
  80     def apply_core(self):
  81         #print "lv2plugin.apply_core() called."
  82         #print "sources: " + repr(self.source)
  83         #print "target: '%s'" % self.target
  84         #print "ttl: '%s'" % self.ttl
  85         self.tool.target = self.target
  86         self.tool.env['shlib_PATTERN'] = '%s.so'
  87         self.tool.uselib = self.uselib
  88         self.tool.ttl = self.ttl
  89         self.tool.lv2 = True
  90         Object.task_gen.apply_core(self)
  91
  92     def get_hook(self, ext):
  93         classes = Object.task_gen.classes
  94         for cls in classes.keys():
  95             if cls == 'lv2plugin':
  96                 continue
  97
  98             if cls != self.type:
  99                 continue
 100
 101             map = classes[cls].mappings
 102             for x in map:
 103                 if x == ext:
 104                     hook = map[x]
 105                     obj = lv2plugin_proxy_abstract(self.tool, hook)
 106                     return obj.the_hook
 107
 108         return None
 109
 110 def set_options(opt):
 111     opt.add_option('--lv2-dir', type='string', default='', dest='LV2_INSTALL_DIR', help='Force directory where LV2 plugin(s) will be installed.')
 112
 113 def detect(conf):
 114     conf.env['LV2_INSTALL_DIR'] = getattr(Params.g_options, 'LV2_INSTALL_DIR')
 115     status = conf.env['LV2_INSTALL_DIR']
 116     if not status:
 117         status = 'will be deduced from LV2_PATH'
 118     display_msg('LV2 installation directory', status, 'GREEN')
 119
 120 @taskgen
 121 @feature('normal')
 122 @after('apply_objdeps')
 123 @before('install_target')
 124 def install_lv2(self):
 125     if not getattr(self, 'lv2', None):
 126         return
 127
 128     self.meths.remove('install_target')
 129
 130     if not Params.g_install:
 131         return
 132
 133     if not self.env['LV2_INSTALL_DIR']:
 134         self.env['LV2_INSTALL_DIR'] = get_lv2_install_dir()
 135         if not self.env['LV2_INSTALL_DIR']:
 136             Params.fatal('Cannot locate LV2 plugins directory')
 137
 138     display_msg('LV2 installation directory', self.env['LV2_INSTALL_DIR'], 'GREEN')
 139
 140     bundle_files = self.ttl
 141     bundle_files.append(self.target + '.so')
 142     install_files('LV2_INSTALL_DIR', self.target + '.lv2', bundle_files, self.env)