Mercurial > cpython-lru_cache-weakref

annotate Demo/sockets/gopher.py @ 79675:c0a2294de787 2.7

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Issue #16199: Backport 2to3 typo fix from 3.2.
author Chris Jerdonek <chris.jerdonek@gmail.com>
date Thu, 11 Oct 2012 16:15:46 -0700
parents 2bc66f1df7cc
children 7ada16a14968
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
4573
73758db2f464 /usr/local/bin/python -> /usr/bin/env python
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1 #! /usr/bin/env python
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2
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3 # A simple gopher client.
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4 #
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5 # Usage: gopher [ [selector] host [port] ]
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6
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7 import string
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8 import sys
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9 import os
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10 import socket
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11
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12 # Default selector, host and port
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13 DEF_SELECTOR = ''
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14 DEF_HOST = 'gopher.micro.umn.edu'
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15 DEF_PORT = 70
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16
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17 # Recognized file types
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18 T_TEXTFILE = '0'
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19 T_MENU = '1'
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20 T_CSO = '2'
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21 T_ERROR = '3'
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22 T_BINHEX = '4'
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23 T_DOS = '5'
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24 T_UUENCODE = '6'
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25 T_SEARCH = '7'
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26 T_TELNET = '8'
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27 T_BINARY = '9'
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28 T_REDUNDANT = '+'
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29 T_SOUND = 's'
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30
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31 # Dictionary mapping types to strings
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32 typename = {'0': '<TEXT>', '1': '<DIR>', '2': '<CSO>', '3': '<ERROR>', \
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33 '4': '<BINHEX>', '5': '<DOS>', '6': '<UUENCODE>', '7': '<SEARCH>', \
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34 '8': '<TELNET>', '9': '<BINARY>', '+': '<REDUNDANT>', 's': '<SOUND>'}
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35
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36 # Oft-used characters and strings
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37 CRLF = '\r\n'
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38 TAB = '\t'
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39
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40 # Open a TCP connection to a given host and port
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41 def open_socket(host, port):
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42 if not port:
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43 port = DEF_PORT
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44 elif type(port) == type(''):
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45 port = string.atoi(port)
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46 s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
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47 s.connect((host, port))
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48 return s
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49
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50 # Send a selector to a given host and port, return a file with the reply
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51 def send_request(selector, host, port):
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52 s = open_socket(host, port)
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53 s.send(selector + CRLF)
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54 s.shutdown(1)
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55 return s.makefile('r')
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56
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57 # Get a menu in the form of a list of entries
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58 def get_menu(selector, host, port):
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59 f = send_request(selector, host, port)
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60 list = []
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61 while 1:
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62 line = f.readline()
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63 if not line:
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64 print '(Unexpected EOF from server)'
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65 break
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66 if line[-2:] == CRLF:
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67 line = line[:-2]
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68 elif line[-1:] in CRLF:
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69 line = line[:-1]
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70 if line == '.':
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71 break
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72 if not line:
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73 print '(Empty line from server)'
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74 continue
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75 typechar = line[0]
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76 parts = string.splitfields(line[1:], TAB)
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77 if len(parts) < 4:
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78 print '(Bad line from server: %r)' % (line,)
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79 continue
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80 if len(parts) > 4:
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81 print '(Extra info from server: %r)' % (parts[4:],)
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82 parts.insert(0, typechar)
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83 list.append(parts)
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84 f.close()
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85 return list
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86
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87 # Get a text file as a list of lines, with trailing CRLF stripped
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88 def get_textfile(selector, host, port):
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89 list = []
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90 get_alt_textfile(selector, host, port, list.append)
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91 return list
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92
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93 # Get a text file and pass each line to a function, with trailing CRLF stripped
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94 def get_alt_textfile(selector, host, port, func):
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95 f = send_request(selector, host, port)
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96 while 1:
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97 line = f.readline()
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98 if not line:
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99 print '(Unexpected EOF from server)'
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100 break
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101 if line[-2:] == CRLF:
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102 line = line[:-2]
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103 elif line[-1:] in CRLF:
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104 line = line[:-1]
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105 if line == '.':
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106 break
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107 if line[:2] == '..':
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108 line = line[1:]
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109 func(line)
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110 f.close()
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111
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112 # Get a binary file as one solid data block
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113 def get_binary(selector, host, port):
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114 f = send_request(selector, host, port)
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115 data = f.read()
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116 f.close()
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117 return data
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118
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119 # Get a binary file and pass each block to a function
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120 def get_alt_binary(selector, host, port, func, blocksize):
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121 f = send_request(selector, host, port)
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122 while 1:
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123 data = f.read(blocksize)
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124 if not data:
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125 break
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126 func(data)
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127
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128 # A *very* simple interactive browser
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129
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130 # Browser main command, has default arguments
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131 def browser(*args):
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132 selector = DEF_SELECTOR
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133 host = DEF_HOST
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134 port = DEF_PORT
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135 n = len(args)
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136 if n > 0 and args[0]:
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137 selector = args[0]
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138 if n > 1 and args[1]:
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139 host = args[1]
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140 if n > 2 and args[2]:
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141 port = args[2]
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142 if n > 3:
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143 raise RuntimeError, 'too many args'
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144 try:
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145 browse_menu(selector, host, port)
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parents: 31515
diff changeset
146 except socket.error, msg:
2bc66f1df7cc Whitespace normalization. Ran reindent.py over the entire source tree.
Tim Peters <tim.peters@gmail.com>
parents: 31515
diff changeset
147 print 'Socket error:', msg
2bc66f1df7cc Whitespace normalization. Ran reindent.py over the entire source tree.
Tim Peters <tim.peters@gmail.com>
parents: 31515
diff changeset
148 sys.exit(1)
2bc66f1df7cc Whitespace normalization. Ran reindent.py over the entire source tree.
Tim Peters <tim.peters@gmail.com>
parents: 31515
diff changeset
149 except KeyboardInterrupt:
2bc66f1df7cc Whitespace normalization. Ran reindent.py over the entire source tree.
Tim Peters <tim.peters@gmail.com>
parents: 31515
diff changeset
150 print '\n[Goodbye]'
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151
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parents:
diff changeset
152 # Browse a menu
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diff changeset
153 def browse_menu(selector, host, port):
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parents: 31515
diff changeset
154 list = get_menu(selector, host, port)
2bc66f1df7cc Whitespace normalization. Ran reindent.py over the entire source tree.
Tim Peters <tim.peters@gmail.com>
parents: 31515
diff changeset
155 while 1:
2bc66f1df7cc Whitespace normalization. Ran reindent.py over the entire source tree.
Tim Peters <tim.peters@gmail.com>
parents: 31515
diff changeset
156 print '----- MENU -----'
2bc66f1df7cc Whitespace normalization. Ran reindent.py over the entire source tree.
Tim Peters <tim.peters@gmail.com>
parents: 31515
diff changeset
157 print 'Selector:', repr(selector)
2bc66f1df7cc Whitespace normalization. Ran reindent.py over the entire source tree.
Tim Peters <tim.peters@gmail.com>
parents: 31515
diff changeset
158 print 'Host:', host, ' Port:', port
2bc66f1df7cc Whitespace normalization. Ran reindent.py over the entire source tree.
Tim Peters <tim.peters@gmail.com>
parents: 31515
diff changeset
159 print
2bc66f1df7cc Whitespace normalization. Ran reindent.py over the entire source tree.
Tim Peters <tim.peters@gmail.com>
parents: 31515
diff changeset
160 for i in range(len(list)):
2bc66f1df7cc Whitespace normalization. Ran reindent.py over the entire source tree.
Tim Peters <tim.peters@gmail.com>
parents: 31515
diff changeset
161 item = list[i]
2bc66f1df7cc Whitespace normalization. Ran reindent.py over the entire source tree.
Tim Peters <tim.peters@gmail.com>
parents: 31515
diff changeset
162 typechar, description = item[0], item[1]
2bc66f1df7cc Whitespace normalization. Ran reindent.py over the entire source tree.
Tim Peters <tim.peters@gmail.com>
parents: 31515
diff changeset
163 print string.rjust(repr(i+1), 3) + ':', description,
2bc66f1df7cc Whitespace normalization. Ran reindent.py over the entire source tree.
Tim Peters <tim.peters@gmail.com>
parents: 31515
diff changeset
164 if typename.has_key(typechar):
2bc66f1df7cc Whitespace normalization. Ran reindent.py over the entire source tree.
Tim Peters <tim.peters@gmail.com>
parents: 31515
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165 print typename[typechar]
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Tim Peters <tim.peters@gmail.com>
parents: 31515
diff changeset
166 else:
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parents: 31515
diff changeset
167 print '<TYPE=' + repr(typechar) + '>'
2bc66f1df7cc Whitespace normalization. Ran reindent.py over the entire source tree.
Tim Peters <tim.peters@gmail.com>
parents: 31515
diff changeset
168 print
2bc66f1df7cc Whitespace normalization. Ran reindent.py over the entire source tree.
Tim Peters <tim.peters@gmail.com>
parents: 31515
diff changeset
169 while 1:
2bc66f1df7cc Whitespace normalization. Ran reindent.py over the entire source tree.
Tim Peters <tim.peters@gmail.com>
parents: 31515
diff changeset
170 try:
2bc66f1df7cc Whitespace normalization. Ran reindent.py over the entire source tree.
Tim Peters <tim.peters@gmail.com>
parents: 31515
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171 str = raw_input('Choice [CR == up a level]: ')
2bc66f1df7cc Whitespace normalization. Ran reindent.py over the entire source tree.
Tim Peters <tim.peters@gmail.com>
parents: 31515
diff changeset
172 except EOFError:
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Tim Peters <tim.peters@gmail.com>
parents: 31515
diff changeset
173 print
2bc66f1df7cc Whitespace normalization. Ran reindent.py over the entire source tree.
Tim Peters <tim.peters@gmail.com>
parents: 31515
diff changeset
174 return
2bc66f1df7cc Whitespace normalization. Ran reindent.py over the entire source tree.
Tim Peters <tim.peters@gmail.com>
parents: 31515
diff changeset
175 if not str:
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Tim Peters <tim.peters@gmail.com>
parents: 31515
diff changeset
176 return
2bc66f1df7cc Whitespace normalization. Ran reindent.py over the entire source tree.
Tim Peters <tim.peters@gmail.com>
parents: 31515
diff changeset
177 try:
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Tim Peters <tim.peters@gmail.com>
parents: 31515
diff changeset
178 choice = string.atoi(str)
2bc66f1df7cc Whitespace normalization. Ran reindent.py over the entire source tree.
Tim Peters <tim.peters@gmail.com>
parents: 31515
diff changeset
179 except string.atoi_error:
2bc66f1df7cc Whitespace normalization. Ran reindent.py over the entire source tree.
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parents: 31515
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180 print 'Choice must be a number; try again:'
2bc66f1df7cc Whitespace normalization. Ran reindent.py over the entire source tree.
Tim Peters <tim.peters@gmail.com>
parents: 31515
diff changeset
181 continue
2bc66f1df7cc Whitespace normalization. Ran reindent.py over the entire source tree.
Tim Peters <tim.peters@gmail.com>
parents: 31515
diff changeset
182 if not 0 < choice <= len(list):
2bc66f1df7cc Whitespace normalization. Ran reindent.py over the entire source tree.
Tim Peters <tim.peters@gmail.com>
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183 print 'Choice out of range; try again:'
2bc66f1df7cc Whitespace normalization. Ran reindent.py over the entire source tree.
Tim Peters <tim.peters@gmail.com>
parents: 31515
diff changeset
184 continue
2bc66f1df7cc Whitespace normalization. Ran reindent.py over the entire source tree.
Tim Peters <tim.peters@gmail.com>
parents: 31515
diff changeset
185 break
2bc66f1df7cc Whitespace normalization. Ran reindent.py over the entire source tree.
Tim Peters <tim.peters@gmail.com>
parents: 31515
diff changeset
186 item = list[choice-1]
2bc66f1df7cc Whitespace normalization. Ran reindent.py over the entire source tree.
Tim Peters <tim.peters@gmail.com>
parents: 31515
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187 typechar = item[0]
2bc66f1df7cc Whitespace normalization. Ran reindent.py over the entire source tree.
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diff changeset
188 [i_selector, i_host, i_port] = item[2:5]
2bc66f1df7cc Whitespace normalization. Ran reindent.py over the entire source tree.
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parents: 31515
diff changeset
189 if typebrowser.has_key(typechar):
2bc66f1df7cc Whitespace normalization. Ran reindent.py over the entire source tree.
Tim Peters <tim.peters@gmail.com>
parents: 31515
diff changeset
190 browserfunc = typebrowser[typechar]
2bc66f1df7cc Whitespace normalization. Ran reindent.py over the entire source tree.
Tim Peters <tim.peters@gmail.com>
parents: 31515
diff changeset
191 try:
2bc66f1df7cc Whitespace normalization. Ran reindent.py over the entire source tree.
Tim Peters <tim.peters@gmail.com>
parents: 31515
diff changeset
192 browserfunc(i_selector, i_host, i_port)
2bc66f1df7cc Whitespace normalization. Ran reindent.py over the entire source tree.
Tim Peters <tim.peters@gmail.com>
parents: 31515
diff changeset
193 except (IOError, socket.error):
2bc66f1df7cc Whitespace normalization. Ran reindent.py over the entire source tree.
Tim Peters <tim.peters@gmail.com>
parents: 31515
diff changeset
194 print '***', sys.exc_type, ':', sys.exc_value
2bc66f1df7cc Whitespace normalization. Ran reindent.py over the entire source tree.
Tim Peters <tim.peters@gmail.com>
parents: 31515
diff changeset
195 else:
2bc66f1df7cc Whitespace normalization. Ran reindent.py over the entire source tree.
Tim Peters <tim.peters@gmail.com>
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diff changeset
196 print 'Unsupported object type'
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197
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198 # Browse a text file
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199 def browse_textfile(selector, host, port):
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200 x = None
2bc66f1df7cc Whitespace normalization. Ran reindent.py over the entire source tree.
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201 try:
2bc66f1df7cc Whitespace normalization. Ran reindent.py over the entire source tree.
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202 p = os.popen('${PAGER-more}', 'w')
2bc66f1df7cc Whitespace normalization. Ran reindent.py over the entire source tree.
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203 x = SaveLines(p)
2bc66f1df7cc Whitespace normalization. Ran reindent.py over the entire source tree.
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204 get_alt_textfile(selector, host, port, x.writeln)
2bc66f1df7cc Whitespace normalization. Ran reindent.py over the entire source tree.
Tim Peters <tim.peters@gmail.com>
parents: 31515
diff changeset
205 except IOError, msg:
2bc66f1df7cc Whitespace normalization. Ran reindent.py over the entire source tree.
Tim Peters <tim.peters@gmail.com>
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206 print 'IOError:', msg
2bc66f1df7cc Whitespace normalization. Ran reindent.py over the entire source tree.
Tim Peters <tim.peters@gmail.com>
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207 if x:
2bc66f1df7cc Whitespace normalization. Ran reindent.py over the entire source tree.
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208 x.close()
2bc66f1df7cc Whitespace normalization. Ran reindent.py over the entire source tree.
Tim Peters <tim.peters@gmail.com>
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diff changeset
209 f = open_savefile()
2bc66f1df7cc Whitespace normalization. Ran reindent.py over the entire source tree.
Tim Peters <tim.peters@gmail.com>
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diff changeset
210 if not f:
2bc66f1df7cc Whitespace normalization. Ran reindent.py over the entire source tree.
Tim Peters <tim.peters@gmail.com>
parents: 31515
diff changeset
211 return
2bc66f1df7cc Whitespace normalization. Ran reindent.py over the entire source tree.
Tim Peters <tim.peters@gmail.com>
parents: 31515
diff changeset
212 x = SaveLines(f)
2bc66f1df7cc Whitespace normalization. Ran reindent.py over the entire source tree.
Tim Peters <tim.peters@gmail.com>
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diff changeset
213 try:
2bc66f1df7cc Whitespace normalization. Ran reindent.py over the entire source tree.
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214 get_alt_textfile(selector, host, port, x.writeln)
2bc66f1df7cc Whitespace normalization. Ran reindent.py over the entire source tree.
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215 print 'Done.'
2bc66f1df7cc Whitespace normalization. Ran reindent.py over the entire source tree.
Tim Peters <tim.peters@gmail.com>
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diff changeset
216 except IOError, msg:
2bc66f1df7cc Whitespace normalization. Ran reindent.py over the entire source tree.
Tim Peters <tim.peters@gmail.com>
parents: 31515
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217 print 'IOError:', msg
2bc66f1df7cc Whitespace normalization. Ran reindent.py over the entire source tree.
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218 x.close()
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219
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220 # Browse a search index
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221 def browse_search(selector, host, port):
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2bc66f1df7cc Whitespace normalization. Ran reindent.py over the entire source tree.
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222 while 1:
2bc66f1df7cc Whitespace normalization. Ran reindent.py over the entire source tree.
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223 print '----- SEARCH -----'
2bc66f1df7cc Whitespace normalization. Ran reindent.py over the entire source tree.
Tim Peters <tim.peters@gmail.com>
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224 print 'Selector:', repr(selector)
2bc66f1df7cc Whitespace normalization. Ran reindent.py over the entire source tree.
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225 print 'Host:', host, ' Port:', port
2bc66f1df7cc Whitespace normalization. Ran reindent.py over the entire source tree.
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diff changeset
226 print
2bc66f1df7cc Whitespace normalization. Ran reindent.py over the entire source tree.
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parents: 31515
diff changeset
227 try:
2bc66f1df7cc Whitespace normalization. Ran reindent.py over the entire source tree.
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parents: 31515
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228 query = raw_input('Query [CR == up a level]: ')
2bc66f1df7cc Whitespace normalization. Ran reindent.py over the entire source tree.
Tim Peters <tim.peters@gmail.com>
parents: 31515
diff changeset
229 except EOFError:
2bc66f1df7cc Whitespace normalization. Ran reindent.py over the entire source tree.
Tim Peters <tim.peters@gmail.com>
parents: 31515
diff changeset
230 print
2bc66f1df7cc Whitespace normalization. Ran reindent.py over the entire source tree.
Tim Peters <tim.peters@gmail.com>
parents: 31515
diff changeset
231 break
2bc66f1df7cc Whitespace normalization. Ran reindent.py over the entire source tree.
Tim Peters <tim.peters@gmail.com>
parents: 31515
diff changeset
232 query = string.strip(query)
2bc66f1df7cc Whitespace normalization. Ran reindent.py over the entire source tree.
Tim Peters <tim.peters@gmail.com>
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diff changeset
233 if not query:
2bc66f1df7cc Whitespace normalization. Ran reindent.py over the entire source tree.
Tim Peters <tim.peters@gmail.com>
parents: 31515
diff changeset
234 break
2bc66f1df7cc Whitespace normalization. Ran reindent.py over the entire source tree.
Tim Peters <tim.peters@gmail.com>
parents: 31515
diff changeset
235 if '\t' in query:
2bc66f1df7cc Whitespace normalization. Ran reindent.py over the entire source tree.
Tim Peters <tim.peters@gmail.com>
parents: 31515
diff changeset
236 print 'Sorry, queries cannot contain tabs'
2bc66f1df7cc Whitespace normalization. Ran reindent.py over the entire source tree.
Tim Peters <tim.peters@gmail.com>
parents: 31515
diff changeset
237 continue
2bc66f1df7cc Whitespace normalization. Ran reindent.py over the entire source tree.
Tim Peters <tim.peters@gmail.com>
parents: 31515
diff changeset
238 browse_menu(selector + TAB + query, host, port)
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239
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diff changeset
240 # "Browse" telnet-based information, i.e. open a telnet session
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diff changeset
241 def browse_telnet(selector, host, port):
32735
2bc66f1df7cc Whitespace normalization. Ran reindent.py over the entire source tree.
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parents: 31515
diff changeset
242 if selector:
2bc66f1df7cc Whitespace normalization. Ran reindent.py over the entire source tree.
Tim Peters <tim.peters@gmail.com>
parents: 31515
diff changeset
243 print 'Log in as', repr(selector)
2bc66f1df7cc Whitespace normalization. Ran reindent.py over the entire source tree.
Tim Peters <tim.peters@gmail.com>
parents: 31515
diff changeset
244 if type(port) <> type(''):
2bc66f1df7cc Whitespace normalization. Ran reindent.py over the entire source tree.
Tim Peters <tim.peters@gmail.com>
parents: 31515
diff changeset
245 port = repr(port)
2bc66f1df7cc Whitespace normalization. Ran reindent.py over the entire source tree.
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parents: 31515
diff changeset
246 sts = os.system('set -x; exec telnet ' + host + ' ' + port)
2bc66f1df7cc Whitespace normalization. Ran reindent.py over the entire source tree.
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parents: 31515
diff changeset
247 if sts:
2bc66f1df7cc Whitespace normalization. Ran reindent.py over the entire source tree.
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parents: 31515
diff changeset
248 print 'Exit status:', sts
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249
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parents:
diff changeset
250 # "Browse" a binary file, i.e. save it to a file
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parents:
diff changeset
251 def browse_binary(selector, host, port):
32735
2bc66f1df7cc Whitespace normalization. Ran reindent.py over the entire source tree.
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diff changeset
252 f = open_savefile()
2bc66f1df7cc Whitespace normalization. Ran reindent.py over the entire source tree.
Tim Peters <tim.peters@gmail.com>
parents: 31515
diff changeset
253 if not f:
2bc66f1df7cc Whitespace normalization. Ran reindent.py over the entire source tree.
Tim Peters <tim.peters@gmail.com>
parents: 31515
diff changeset
254 return
2bc66f1df7cc Whitespace normalization. Ran reindent.py over the entire source tree.
Tim Peters <tim.peters@gmail.com>
parents: 31515
diff changeset
255 x = SaveWithProgress(f)
2bc66f1df7cc Whitespace normalization. Ran reindent.py over the entire source tree.
Tim Peters <tim.peters@gmail.com>
parents: 31515
diff changeset
256 get_alt_binary(selector, host, port, x.write, 8*1024)
2bc66f1df7cc Whitespace normalization. Ran reindent.py over the entire source tree.
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parents: 31515
diff changeset
257 x.close()
1080
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258
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parents:
diff changeset
259 # "Browse" a sound file, i.e. play it or save it
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parents:
diff changeset
260 def browse_sound(selector, host, port):
32735
2bc66f1df7cc Whitespace normalization. Ran reindent.py over the entire source tree.
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parents: 31515
diff changeset
261 browse_binary(selector, host, port)
1080
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diff changeset
262
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diff changeset
263 # Dictionary mapping types to browser functions
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parents:
diff changeset
264 typebrowser = {'0': browse_textfile, '1': browse_menu, \
32735
2bc66f1df7cc Whitespace normalization. Ran reindent.py over the entire source tree.
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parents: 31515
diff changeset
265 '4': browse_binary, '5': browse_binary, '6': browse_textfile, \
2bc66f1df7cc Whitespace normalization. Ran reindent.py over the entire source tree.
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parents: 31515
diff changeset
266 '7': browse_search, \
2bc66f1df7cc Whitespace normalization. Ran reindent.py over the entire source tree.
Tim Peters <tim.peters@gmail.com>
parents: 31515
diff changeset
267 '8': browse_telnet, '9': browse_binary, 's': browse_sound}
1080
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268
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diff changeset
269 # Class used to save lines, appending a newline to each line
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parents:
diff changeset
270 class SaveLines:
32735
2bc66f1df7cc Whitespace normalization. Ran reindent.py over the entire source tree.
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diff changeset
271 def __init__(self, f):
2bc66f1df7cc Whitespace normalization. Ran reindent.py over the entire source tree.
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diff changeset
272 self.f = f
2bc66f1df7cc Whitespace normalization. Ran reindent.py over the entire source tree.
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diff changeset
273 def writeln(self, line):
2bc66f1df7cc Whitespace normalization. Ran reindent.py over the entire source tree.
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parents: 31515
diff changeset
274 self.f.write(line + '\n')
2bc66f1df7cc Whitespace normalization. Ran reindent.py over the entire source tree.
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parents: 31515
diff changeset
275 def close(self):
2bc66f1df7cc Whitespace normalization. Ran reindent.py over the entire source tree.
Tim Peters <tim.peters@gmail.com>
parents: 31515
diff changeset
276 sts = self.f.close()
2bc66f1df7cc Whitespace normalization. Ran reindent.py over the entire source tree.
Tim Peters <tim.peters@gmail.com>
parents: 31515
diff changeset
277 if sts:
2bc66f1df7cc Whitespace normalization. Ran reindent.py over the entire source tree.
Tim Peters <tim.peters@gmail.com>
parents: 31515
diff changeset
278 print 'Exit status:', sts
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279
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diff changeset
280 # Class used to save data while showing progress
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parents:
diff changeset
281 class SaveWithProgress:
32735
2bc66f1df7cc Whitespace normalization. Ran reindent.py over the entire source tree.
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diff changeset
282 def __init__(self, f):
2bc66f1df7cc Whitespace normalization. Ran reindent.py over the entire source tree.
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diff changeset
283 self.f = f
2bc66f1df7cc Whitespace normalization. Ran reindent.py over the entire source tree.
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284 def write(self, data):
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285 sys.stdout.write('#')
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286 sys.stdout.flush()
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287 self.f.write(data)
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288 def close(self):
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289 print
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290 sts = self.f.close()
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291 if sts:
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292 print 'Exit status:', sts
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293
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294 # Ask for and open a save file, or return None if not to save
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295 def open_savefile():
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296 try:
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297 savefile = raw_input( \
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298 'Save as file [CR == don\'t save; |pipeline or ~user/... OK]: ')
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299 except EOFError:
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300 print
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301 return None
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302 savefile = string.strip(savefile)
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303 if not savefile:
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304 return None
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305 if savefile[0] == '|':
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306 cmd = string.strip(savefile[1:])
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307 try:
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308 p = os.popen(cmd, 'w')
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309 except IOError, msg:
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310 print repr(cmd), ':', msg
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311 return None
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312 print 'Piping through', repr(cmd), '...'
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313 return p
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314 if savefile[0] == '~':
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315 savefile = os.path.expanduser(savefile)
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316 try:
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317 f = open(savefile, 'w')
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318 except IOError, msg:
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319 print repr(savefile), ':', msg
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320 return None
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321 print 'Saving to', repr(savefile), '...'
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322 return f
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323
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324 # Test program
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325 def test():
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326 if sys.argv[4:]:
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327 print 'usage: gopher [ [selector] host [port] ]'
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328 sys.exit(2)
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329 elif sys.argv[3:]:
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330 browser(sys.argv[1], sys.argv[2], sys.argv[3])
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331 elif sys.argv[2:]:
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332 try:
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333 port = string.atoi(sys.argv[2])
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334 selector = ''
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335 host = sys.argv[1]
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336 except string.atoi_error:
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337 selector = sys.argv[1]
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338 host = sys.argv[2]
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339 port = ''
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340 browser(selector, host, port)
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341 elif sys.argv[1:]:
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342 browser('', sys.argv[1])
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343 else:
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344 browser()
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345
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346 # Call the test program as a main program
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347 test()