app config, parallel filelist generation

.gitignore

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+*.pyc
+__pycache__
+over

find-orphans.py

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+#! /bin/env python3
+# encoding: utf-8
+
+# library imports
+import os
+import over
+import re
+import sys
+import time
+
+# --------------------------------------------------
+
+prefix = over.core.textui.prefix
+_print = over.core.textui.Output('Find Orphans')
+
+# --------------------------------------------------
+# Functions
+
+# --------------------------------------------------
+# Classes
+
+# --------------------------------------------------
+
+if __name__ == '__main__':
+	main = over.core.app.Main('Find Orphans', None, 'AWARE-Overwatch Joint Software License')
+	main.add_option('filter', 'str', ['/home/*', '/var/*', '*.pyc'], 'Shell globs that should be filtered out.', plural=True)
+	main.add_option('null-separated', 'bool', False, 'Output each filename separated with a null character. Otherwise use a newline.', short_name='0')
+	main.add_help('Description', ['Finds files on Gentoo systems that aren\'t owned by any installed package and lists them.'])
+	main.enable_help('h')
+	main.parse()
+	
+	if not main.targets:
+		_print('specify at least one directory to work on, e.g. \'/\'', prefix.fail)
+		main.exit(silent=True)
+	
+	# --------------------------------------------------
+	# Create a file list
+	
+	file_list = []
+	threads = [] # {proc, output_buffer}
+	
+	for root in main.targets:
+		proc = over.core.cmd.Command('find', root, '-print0')
+		proc.run()
+		threads.append({'proc': proc, 'output_buffer': []})
+	
+	_print('gathering file list using %d processes' %(len(threads)), prefix.start)
+	
+	while True:
+		at_least_one_lives = False
+		
+		for thread in threads:
+			tmp = thread['proc'].get_output()
+			
+			if not tmp is None:
+				thread['output_buffer'].append(tmp)
+				at_least_one_lives = True
+		
+		if at_least_one_lives:
+			time.sleep(1)
+		else:
+			break
+	
+	_print('post-processing file list')
+	
+