5 # Usage: gopher [ [selector] host [port] ]
12 # Default selector, host and port
36 # Oft-used characters and strings
40 # Open a TCP connection to a given host and port
41 def open_socket(host, port):  argument
47     s.connect((host, port))
50 # Send a selector to a given host and port, return a file with the reply
51 def send_request(selector, host, port):  argument
52     s = open_socket(host, port)
58 def get_menu(selector, host, port):  argument
59     f = send_request(selector, host, port)
66         if line[-2:] == CRLF:
67             line = line[:-2]
68         elif line[-1:] in CRLF:
69             line = line[:-1]
88 def get_textfile(selector, host, port):  argument
90     get_alt_textfile(selector, host, port, list.append)
94 def get_alt_textfile(selector, host, port, func):  argument
95     f = send_request(selector, host, port)
101         if line[-2:] == CRLF:
102             line = line[:-2]
103         elif line[-1:] in CRLF:
104             line = line[:-1]
113 def get_binary(selector, host, port):  argument
114     f = send_request(selector, host, port)
120 def get_alt_binary(selector, host, port, func, blocksize):  argument
121     f = send_request(selector, host, port)
133     host = DEF_HOST
139         host = args[1]
145         browse_menu(selector, host, port)
153 def browse_menu(selector, host, port):  argument
154     list = get_menu(selector, host, port)
156         print '----- MENU -----'
158         print 'Host:', host, ' Port:', port
186         item = list[choice-1]
199 def browse_textfile(selector, host, port):  argument
202         p = os.popen('${PAGER-more}', 'w')
204         get_alt_textfile(selector, host, port, x.writeln)
214         get_alt_textfile(selector, host, port, x.writeln)
221 def browse_search(selector, host, port):  argument
223         print '----- SEARCH -----'
225         print 'Host:', host, ' Port:', port
238         browse_menu(selector + TAB + query, host, port)
240 # "Browse" telnet-based information, i.e. open a telnet session
241 def browse_telnet(selector, host, port):  argument
246     sts = os.system('set -x; exec telnet ' + host + ' ' + port)
251 def browse_binary(selector, host, port):  argument
256     get_alt_binary(selector, host, port, x.write, 8*1024)
260 def browse_sound(selector, host, port):  argument
261     browse_binary(selector, host, port)
274         self.f.write(line + '\n')
284     def write(self, data):  member in SaveWithProgress
285         sys.stdout.write('#')
287         self.f.write(data)
327         print 'usage: gopher [ [selector] host [port] ]'
335             host = sys.argv[1]
338             host = sys.argv[2]
340         browser(selector, host, port)