Source code for

# -*- coding: utf-8 -*-
npyscreen based application for searching shell history
import curses
import os
import sys

import npyscreen

from import LocalHistory, WebHistory

[docs]class SearchResult(npyscreen.Textfield): """ Search result item """ pass
[docs]class CommandBox(npyscreen.TitleText): """ Command Box widget """ def __init__(self, screen, **kwargs): """ Just add some state to the default widget to track if we have been manually edited """ self.been_edited = False super(CommandBox, self).__init__(screen, **kwargs)
[docs] def when_value_edited(self): """ Mark myself as having been edited """ self.been_edited = True
[docs]class SearchResults(npyscreen.MultiLineAction): """ MultiLine widget for displaying search results. """ _contained_widgets = SearchResult
[docs] def actionHighlighted(self, act_on_this, key_press): cmd_box = self.parent.command_box cmd_box.value = act_on_this cmd_box.been_edited = True cmd_box.update() self.parent.editw = 2 self.parent.command_box.edit()
[docs]class SearchForm(npyscreen.ActionFormWithMenus): """ Command history search form """
[docs] def forward_order(self): """ Change sort order to forward """ self.order = None self.search_box.when_value_edited()
[docs] def reverse_order(self): """ Change sort order to forward """ self.order = 'r' self.search_box.when_value_edited()
[docs] def afterEditing(self): """ This is the form to display, so set next to None """ self.parentApp.setNextForm(None)
[docs] def create(self): """ Build the form for searching """ # Set default order to reverse self.order = 'r' self.search_box = self.add( SearchBox, name='Search', begin_entry_at=10 ) self.results_list = self.add( SearchResults, name='Results', scroll_exit=True, max_height=-2, values=[] ) self.command_box = self.add( CommandBox, name='Command', begin_entry_at=10, rely=-3 ) self.add_handlers({ '!o': self.on_ok, '!c': self.on_cancel, curses.ascii.ESC: self.on_cancel }) # Create our menus = self.new_menu()[ ('Forward Order', self.forward_order, '^F'), ('Reverse Order', self.reverse_order, '^R'), ])
[docs] def beforeEditing(self): """ Set the edit index to the search box and tell it to preserve the value """ self.preserve_selected_widget = True
[docs] def on_ok(self, *args): """ We just drop the command into a known file for the wrapper to pick up """ with open(os.path.expanduser('~/.archelon_cmd'), 'w') as cmd_file: cmd_file.write(self.command_box.value) sys.exit(0)
[docs] def on_cancel(self, *args): """ Drop out with a non 1 exit code so the wrapper doesn't execute anything """ sys.exit(1)