From 7ef52c68574b54333c44c5be739049deac3a28ec Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Ra=C3=BAl=20Benencia?= <rul@kalgan.cc>
Date: Wed, 10 Oct 2012 18:34:21 -0300
Subject: Data loader

---
 lib/commandmanager.py    | 37 +++++++++++++++++++++++++++++++++
 lib/completionmanager.py |  9 ++++++++
 lib/exceptions.py        |  8 +++++++
 lib/outputmanager.py     | 41 ++++++++++++++++++++++++++++++++++++
 pywhoisd_dataloader.py   | 54 ++++++++++++++++++++++++++++++++++++++++++++++++
 5 files changed, 149 insertions(+)
 create mode 100644 lib/commandmanager.py
 create mode 100644 lib/completionmanager.py
 create mode 100644 lib/exceptions.py
 create mode 100644 lib/outputmanager.py
 create mode 100755 pywhoisd_dataloader.py

diff --git a/lib/commandmanager.py b/lib/commandmanager.py
new file mode 100644
index 0000000..3a06f99
--- /dev/null
+++ b/lib/commandmanager.py
@@ -0,0 +1,37 @@
+from lib.exceptions import CmdNotFoundException
+
+class Command:
+    def __init__(self):
+        pass
+
+    def execute(self, loader, params):
+        pass
+
+    def usage(self, cmd_name):
+        return cmd_name
+
+class AdminCommand(Command):
+    pass
+
+class NetworkCommand(Command):
+    pass
+
+class DomainCommand(Command):
+    pass
+
+class CommandManager:
+    def __init__(self):
+        self.cmds = {
+            'admin'  : AdminCommand(),
+            'network': NetworkCommand(),
+            'domain' : DomainCommand(),
+            }
+        
+    def find(self, cmd):
+        if cmd in self.cmds:
+            return self.cmds[cmd]
+        else:
+            raise CmdNotFoundException(cmd + 'is not a valid command.')
+
+    def commands(self):
+        return self.cmds.keys()
diff --git a/lib/completionmanager.py b/lib/completionmanager.py
new file mode 100644
index 0000000..fe6f099
--- /dev/null
+++ b/lib/completionmanager.py
@@ -0,0 +1,9 @@
+class CompletionManager:
+    def __init__(self):
+        pass
+
+    def generate_commands(self):
+        pass
+
+    def generate_parameters(self):
+        pass
diff --git a/lib/exceptions.py b/lib/exceptions.py
new file mode 100644
index 0000000..63c7475
--- /dev/null
+++ b/lib/exceptions.py
@@ -0,0 +1,8 @@
+class CmdNotFoundException(Exception):
+    pass
+
+class CommandException(Exception):
+    def __init__(self, message, print_usage=True):
+        Exception.__init__(self, message)
+        self.print_usage = print_usage
+    
diff --git a/lib/outputmanager.py b/lib/outputmanager.py
new file mode 100644
index 0000000..d9d4af1
--- /dev/null
+++ b/lib/outputmanager.py
@@ -0,0 +1,41 @@
+#!/usr/bin/python3
+import sys
+
+class OutputManager:
+    def __init__(self):
+        
+        self.echo_output = True
+
+    def line_break(self):
+        if self.echo_output:
+            sys.stdout.write('\n')
+            sys.stdout.flush()
+
+        return self
+
+    def error(self, string):
+        if self.echo_output:
+            self._erase_line()
+            string = '[-] ' + string
+            self.last_line_length = len(string)
+
+            sys.stdout.write(string)
+            sys.stdout.flush()
+
+        return self
+
+    def normal(self, string):
+        if self.echo_output:
+            self._erase_line()
+            self.last_line_length = len(string)
+            sys.stdout.write(string)
+            sys.stdout.flush()
+
+        return self
+
+    def _erase_line(self):
+        sys.stdout.write('\r' + ' ' * self.last_line_length + '\r')
+        return self
+
+        
+    
diff --git a/pywhoisd_dataloader.py b/pywhoisd_dataloader.py
new file mode 100755
index 0000000..7b80ef5
--- /dev/null
+++ b/pywhoisd_dataloader.py
@@ -0,0 +1,54 @@
+#!/usr/bin/python3
+import signal, sys
+
+from lib.outputmanager import OutputManager
+from lib.commandmanager import CommandManager
+from lib.completionmanager import CompletionManager
+
+from lib.exceptions import CmdNotFoundException, CommandException
+
+class Manager:
+    def __init__(self):
+        self.loader = None
+        self.completer = CompletionManager()
+
+    def start(self):
+        try:
+            signal.signal(signal.SIGINT, signal.default_int_handler)
+            while True:
+                try:
+                    try:
+                        line = input('% ')
+                    except KeyboardInterrupt:
+                        output_manager.line_break()
+                        continue
+
+                    cmd_name = line.strip().split(' ')
+                    if len(cmd_name) > 0 and len(cmd_name[0]) > 0:
+                        cmd = cmd_manager.find(cmd_name[0])
+                        cmd.execute(self.loader, line[1:] if len(line) > 1 else [])
+                        
+                except CommandException as err:
+                    output_manager.error(str(err)).linebreak()
+                    if err.print_usage:
+                        output_manager.normal('Usage: {0}'.format(cmd.usage(line[0]))).line_break()
+
+                except CmdNotFoundException as err:
+                    output_manager.error('Error: {0}'.format(str(err))).linebreak()
+                    
+                except EOFError:
+                    output_manager.line_break()
+                    exit(0)
+        except:
+            raise
+
+if __name__ == '__main__':
+    try:
+        manager = Manager()
+        cmd_manager = CommandManager()
+        output_manager = OutputManager()
+        manager.start()
+
+    except: # TODO: Improve exceptions handling
+        print("Unexpected error:", sys.exc_info()[0])
+        raise
-- 
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