* crop fully functional

[mpd-goodies.git] / lib / startop.py

diff --git a/lib/startop.py b/lib/startop.py
new file mode 100644 (file)
index 0000000..0ede89a
--- /dev/null
+++ b/lib/startop.py
@@ -0,0 +1,100 @@
+# -*- coding: utf-8 -*-
+
+from optparse import (OptionParser, OptionValueError, SUPPRESS_HELP)
+from os import environ
+
+# Options list
+# pop out 'sw' value before creating OptionParser object.
+##{{{
+OPTS = list([
+    {
+        'sw': ['-S', '--hostname'],
+        'type': 'string',
+        'dest': 'host',
+        'help': 'Hostname MPD in running on'},
+    {
+        'sw': ['-P', '--port'],
+        'type': 'int',
+        'dest': 'port',
+        'help': 'Port MPD in listening on'},
+])
+#}}}
+
+USAGE = u"""USAGE:  %prog [--help] [options]"""
+
+
+def get_mpd_environ():#{{{
+    """
+    Retrieve MPD env. var.
+    """
+    con_id = dict({'host': 'localhost',
+                   'port': int(6600)})
+    passwd = None
+    mpd_host_env = environ.get('MPD_HOST')
+    mpd_port = environ.get('MPD_PORT')
+    if mpd_host_env:
+        # If password is set:
+        # mpd_host_env = ['pass', 'host'] because MPD_HOST=pass@host
+        mpd_host_env = mpd_host_env.split('@')
+        mpd_host_env.reverse()
+        if len(mpd_host_env[0]) > 0:
+                con_id.update({'host': mpd_host_env[0]})
+        if len(mpd_host_env) > 1:
+            print 'passwd set in MPD_HOST'
+            passwd = mpd_host_env[1]
+    if mpd_port:
+        con_id.update({'port': int(mpd_port)})
+    return (con_id, passwd)#}}}
+
+
+class StartOpt(object):
+    """
+    """
+
+    def __init__(self, script_info, options):#{{{
+        self.parser = None
+        self.cli_options = dict({})
+        self.cli_args = dict({})
+        self.info = dict(script_info)
+        self.options = list(options + OPTS)
+        self.main()#}}}
+
+    def declare_opts(self):#{{{
+        """
+        Declare options in OptionParser object.
+        """
+        version = self.info.get('version')
+        prog = self.info.get('prog_name')
+        des = self.info.get('description')
+        self.parser = OptionParser(version=version,
+                                   usage=USAGE,
+                                   prog=prog,
+                                   description=des)
+        con_id, passwd = get_mpd_environ()
+        # Add all options declare in OPTS
+        for opt in self.options:
+            opt_names = opt.pop('sw')
+            self.parser.add_option(*opt_names, **opt)
+            #set defaults for host/port according to env var
+            dest = opt.get('dest')
+            if dest in ['host']:
+                self.parser.set_defaults(host=con_id.get('host'))
+            if dest in ['port']:
+                self.parser.set_defaults(port=con_id.get('port'))#}}}
+
+    def main(self):
+        """declare options, parse command line"""
+        self.declare_opts()
+        (self.cli_options, self.cli_args) = self.parser.parse_args()
+
+
+def main():
+    pass
+
+# Script starts here
+if __name__ == '__main__':
+    main()
+
+# VIM MODLINE
+# vim: ai ts=4 sw=4 sts=4 expandtab
+