#! /usr/bin/env python
# -*- coding: UTF-8 -*-

""" PyBrowsing, creato da Frafra (francesco.it@gmail.com)

    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation; either version 2 of the License, or
    (at your option) any later version.

    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
    GNU General Public License for more details.
"""  
 
__module_name__ = "PyBrowsing"
__module_version__ = "0.1"
__module_description__ = "Per cercare in grossi db in tempo reale"

# Prova ad importare le librerie per Windows, altrimenti si adatta per Unix
try:
    from msvcrt import getch
except:
    from termios import tcgetattr, TCSADRAIN, tcsetattr
    from tty import setraw
    from sys import stdin
    def getch():
        fd = stdin.fileno()
        old_settings = tcgetattr(fd)
        setraw(stdin.fileno())
        ch = stdin.read(1)
        tcsetattr(fd, TCSADRAIN, old_settings)
        return ch

# Inizializza alcune variabili
opts = []
res= ""
query = ""
old_query_len = 0

try:
    siti = open("siti.txt", "r")    # File contenente i siti
except:
    print "File-dizionario siti.txt non trovato nella directory corrente."    

# Legge il file
while 1:
    line = siti.readline()
    if not line:
        break
    opts.append(line[0:-1])
siti.close()

opts.sort()                         # Riordina

while 1:
    print  "\rInserisci dei caratteri:",
    new_query = getch()         # Prende il carattere
    if new_query == "":       # Quando si preme del...
        if len(query) == 0:         # ...se non ci sono più caratteri...
            raise SystemExit(0)         # ...esce
        else:                       # ...altrimenti...
            query = query[0:-1]         # ... elimina l'ultimo carattere
    else:
        query = query + new_query   # Ricompone la stringa

    cleaner = len(res) + old_query_len + 5
    print " "*cleaner+"\b"*(cleaner+1), # Pulisce la riga dal vecchio risultato

    if query != "":
        print query + " -> ",
        res = ", ".join(x for x in opts if x.startswith(query))
        if not res:                 # Se non ci sono risultati...
            res = "[No results]"        # ... setta su [No results]
        print res,                  # Visualizza il risultato
    old_query_len = len(query)      # Calcola la lunghezza dell'input