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annotate etc/lp.lua @ 0:4b915342e2a8

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LuaSocket 2.0.2 + CMake build description.
author Eric Wing <ewing . public |-at-| gmail . com>
date Tue, 26 Aug 2008 18:40:01 -0700
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4b915342e2a8 LuaSocket 2.0.2 + CMake build description.
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1 -----------------------------------------------------------------------------
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2 -- LPD support for the Lua language
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3 -- LuaSocket toolkit.
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4 -- Author: David Burgess
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5 -- Modified by Diego Nehab, but David is in charge
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6 -- RCS ID: $Id: lp.lua,v 1.14 2005/11/21 07:04:44 diego Exp $
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7 -----------------------------------------------------------------------------
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8 --[[
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9 if you have any questions: RFC 1179
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10 ]]
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11 -- make sure LuaSocket is loaded
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12 local io = require("io")
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13 local base = _G
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14 local os = require("os")
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15 local math = require("math")
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16 local string = require("string")
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17 local socket = require("socket")
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18 local ltn12 = require("ltn12")
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19 module("socket.lp")
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20
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21 -- default port
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22 PORT = 515
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23 SERVER = os.getenv("SERVER_NAME") or os.getenv("COMPUTERNAME") or "localhost"
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24 PRINTER = os.getenv("PRINTER") or "printer"
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25
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26 local function connect(localhost, option)
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27 local host = option.host or SERVER
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28 local port = option.port or PORT
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29 local skt
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30 local try = socket.newtry(function() if skt then skt:close() end end)
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31 if option.localbind then
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32 -- bind to a local port (if we can)
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33 local localport = 721
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34 local done, err
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35 repeat
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36 skt = socket.try(socket.tcp())
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37 try(skt:settimeout(30))
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38 done, err = skt:bind(localhost, localport)
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39 if not done then
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40 localport = localport + 1
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41 skt:close()
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42 skt = nil
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43 else break end
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44 until localport > 731
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45 socket.try(skt, err)
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46 else skt = socket.try(socket.tcp()) end
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47 try(skt:connect(host, port))
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48 return { skt = skt, try = try }
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49 end
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50
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51 --[[
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52 RFC 1179
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53 5.3 03 - Send queue state (short)
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54
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55 +----+-------+----+------+----+
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56 | 03 | Queue | SP | List | LF |
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57 +----+-------+----+------+----+
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58 Command code - 3
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59 Operand 1 - Printer queue name
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60 Other operands - User names or job numbers
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61
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62 If the user names or job numbers or both are supplied then only those
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63 jobs for those users or with those numbers will be sent.
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64
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65 The response is an ASCII stream which describes the printer queue.
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66 The stream continues until the connection closes. Ends of lines are
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67 indicated with ASCII LF control characters. The lines may also
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68 contain ASCII HT control characters.
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69
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70 5.4 04 - Send queue state (long)
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71
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72 +----+-------+----+------+----+
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73 | 04 | Queue | SP | List | LF |
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74 +----+-------+----+------+----+
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75 Command code - 4
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76 Operand 1 - Printer queue name
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77 Other operands - User names or job numbers
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78
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79 If the user names or job numbers or both are supplied then only those
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80 jobs for those users or with those numbers will be sent.
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81
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82 The response is an ASCII stream which describes the printer queue.
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83 The stream continues until the connection closes. Ends of lines are
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84 indicated with ASCII LF control characters. The lines may also
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85 contain ASCII HT control characters.
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86 ]]
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87
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88 -- gets server acknowledement
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89 local function recv_ack(con)
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90 local ack = con.skt:receive(1)
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91 con.try(string.char(0) == ack, "failed to receive server acknowledgement")
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92 end
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93
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94 -- sends client acknowledement
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95 local function send_ack(con)
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96 local sent = con.skt:send(string.char(0))
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97 con.try(sent == 1, "failed to send acknowledgement")
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98 end
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99
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100 -- sends queue request
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101 -- 5.2 02 - Receive a printer job
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102 --
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103 -- +----+-------+----+
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104 -- | 02 | Queue | LF |
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105 -- +----+-------+----+
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106 -- Command code - 2
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107 -- Operand - Printer queue name
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108 --
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109 -- Receiving a job is controlled by a second level of commands. The
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110 -- daemon is given commands by sending them over the same connection.
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111 -- The commands are described in the next section (6).
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112 --
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113 -- After this command is sent, the client must read an acknowledgement
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114 -- octet from the daemon. A positive acknowledgement is an octet of
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115 -- zero bits. A negative acknowledgement is an octet of any other
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116 -- pattern.
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117 local function send_queue(con, queue)
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118 queue = queue or PRINTER
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119 local str = string.format("\2%s\10", queue)
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120 local sent = con.skt:send(str)
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121 con.try(sent == string.len(str), "failed to send print request")
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122 recv_ack(con)
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123 end
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124
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125 -- sends control file
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126 -- 6.2 02 - Receive control file
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127 --
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128 -- +----+-------+----+------+----+
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Eric Wing <ewing . public |-at-| gmail . com>
parents:
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129 -- | 02 | Count | SP | Name | LF |
4b915342e2a8 LuaSocket 2.0.2 + CMake build description.
Eric Wing <ewing . public |-at-| gmail . com>
parents:
diff changeset
130 -- +----+-------+----+------+----+
4b915342e2a8 LuaSocket 2.0.2 + CMake build description.
Eric Wing <ewing . public |-at-| gmail . com>
parents:
diff changeset
131 -- Command code - 2
4b915342e2a8 LuaSocket 2.0.2 + CMake build description.
Eric Wing <ewing . public |-at-| gmail . com>
parents:
diff changeset
132 -- Operand 1 - Number of bytes in control file
4b915342e2a8 LuaSocket 2.0.2 + CMake build description.
Eric Wing <ewing . public |-at-| gmail . com>
parents:
diff changeset
133 -- Operand 2 - Name of control file
4b915342e2a8 LuaSocket 2.0.2 + CMake build description.
Eric Wing <ewing . public |-at-| gmail . com>
parents:
diff changeset
134 --
4b915342e2a8 LuaSocket 2.0.2 + CMake build description.
Eric Wing <ewing . public |-at-| gmail . com>
parents:
diff changeset
135 -- The control file must be an ASCII stream with the ends of lines
4b915342e2a8 LuaSocket 2.0.2 + CMake build description.
Eric Wing <ewing . public |-at-| gmail . com>
parents:
diff changeset
136 -- indicated by ASCII LF. The total number of bytes in the stream is
4b915342e2a8 LuaSocket 2.0.2 + CMake build description.
Eric Wing <ewing . public |-at-| gmail . com>
parents:
diff changeset
137 -- sent as the first operand. The name of the control file is sent as
4b915342e2a8 LuaSocket 2.0.2 + CMake build description.
Eric Wing <ewing . public |-at-| gmail . com>
parents:
diff changeset
138 -- the second. It should start with ASCII "cfA", followed by a three
4b915342e2a8 LuaSocket 2.0.2 + CMake build description.
Eric Wing <ewing . public |-at-| gmail . com>
parents:
diff changeset
139 -- digit job number, followed by the host name which has constructed the
4b915342e2a8 LuaSocket 2.0.2 + CMake build description.
Eric Wing <ewing . public |-at-| gmail . com>
parents:
diff changeset
140 -- control file. Acknowledgement processing must occur as usual after
4b915342e2a8 LuaSocket 2.0.2 + CMake build description.
Eric Wing <ewing . public |-at-| gmail . com>
parents:
diff changeset
141 -- the command is sent.
4b915342e2a8 LuaSocket 2.0.2 + CMake build description.
Eric Wing <ewing . public |-at-| gmail . com>
parents:
diff changeset
142 --
4b915342e2a8 LuaSocket 2.0.2 + CMake build description.
Eric Wing <ewing . public |-at-| gmail . com>
parents:
diff changeset
143 -- The next "Operand 1" octets over the same TCP connection are the
4b915342e2a8 LuaSocket 2.0.2 + CMake build description.
Eric Wing <ewing . public |-at-| gmail . com>
parents:
diff changeset
144 -- intended contents of the control file. Once all of the contents have
4b915342e2a8 LuaSocket 2.0.2 + CMake build description.
Eric Wing <ewing . public |-at-| gmail . com>
parents:
diff changeset
145 -- been delivered, an octet of zero bits is sent as an indication that
4b915342e2a8 LuaSocket 2.0.2 + CMake build description.
Eric Wing <ewing . public |-at-| gmail . com>
parents:
diff changeset
146 -- the file being sent is complete. A second level of acknowledgement
4b915342e2a8 LuaSocket 2.0.2 + CMake build description.
Eric Wing <ewing . public |-at-| gmail . com>
parents:
diff changeset
147 -- processing must occur at this point.
4b915342e2a8 LuaSocket 2.0.2 + CMake build description.
Eric Wing <ewing . public |-at-| gmail . com>
parents:
diff changeset
148
4b915342e2a8 LuaSocket 2.0.2 + CMake build description.
Eric Wing <ewing . public |-at-| gmail . com>
parents:
diff changeset
149 -- sends data file
4b915342e2a8 LuaSocket 2.0.2 + CMake build description.
Eric Wing <ewing . public |-at-| gmail . com>
parents:
diff changeset
150 -- 6.3 03 - Receive data file
4b915342e2a8 LuaSocket 2.0.2 + CMake build description.
Eric Wing <ewing . public |-at-| gmail . com>
parents:
diff changeset
151 --
4b915342e2a8 LuaSocket 2.0.2 + CMake build description.
Eric Wing <ewing . public |-at-| gmail . com>
parents:
diff changeset
152 -- +----+-------+----+------+----+
4b915342e2a8 LuaSocket 2.0.2 + CMake build description.
Eric Wing <ewing . public |-at-| gmail . com>
parents:
diff changeset
153 -- | 03 | Count | SP | Name | LF |
4b915342e2a8 LuaSocket 2.0.2 + CMake build description.
Eric Wing <ewing . public |-at-| gmail . com>
parents:
diff changeset
154 -- +----+-------+----+------+----+
4b915342e2a8 LuaSocket 2.0.2 + CMake build description.
Eric Wing <ewing . public |-at-| gmail . com>
parents:
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155 -- Command code - 3
4b915342e2a8 LuaSocket 2.0.2 + CMake build description.
Eric Wing <ewing . public |-at-| gmail . com>
parents:
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156 -- Operand 1 - Number of bytes in data file
4b915342e2a8 LuaSocket 2.0.2 + CMake build description.
Eric Wing <ewing . public |-at-| gmail . com>
parents:
diff changeset
157 -- Operand 2 - Name of data file
4b915342e2a8 LuaSocket 2.0.2 + CMake build description.
Eric Wing <ewing . public |-at-| gmail . com>
parents:
diff changeset
158 --
4b915342e2a8 LuaSocket 2.0.2 + CMake build description.
Eric Wing <ewing . public |-at-| gmail . com>
parents:
diff changeset
159 -- The data file may contain any 8 bit values at all. The total number
4b915342e2a8 LuaSocket 2.0.2 + CMake build description.
Eric Wing <ewing . public |-at-| gmail . com>
parents:
diff changeset
160 -- of bytes in the stream may be sent as the first operand, otherwise
4b915342e2a8 LuaSocket 2.0.2 + CMake build description.
Eric Wing <ewing . public |-at-| gmail . com>
parents:
diff changeset
161 -- the field should be cleared to 0. The name of the data file should
4b915342e2a8 LuaSocket 2.0.2 + CMake build description.
Eric Wing <ewing . public |-at-| gmail . com>
parents:
diff changeset
162 -- start with ASCII "dfA". This should be followed by a three digit job
4b915342e2a8 LuaSocket 2.0.2 + CMake build description.
Eric Wing <ewing . public |-at-| gmail . com>
parents:
diff changeset
163 -- number. The job number should be followed by the host name which has
4b915342e2a8 LuaSocket 2.0.2 + CMake build description.
Eric Wing <ewing . public |-at-| gmail . com>
parents:
diff changeset
164 -- constructed the data file. Interpretation of the contents of the
4b915342e2a8 LuaSocket 2.0.2 + CMake build description.
Eric Wing <ewing . public |-at-| gmail . com>
parents:
diff changeset
165 -- data file is determined by the contents of the corresponding control
4b915342e2a8 LuaSocket 2.0.2 + CMake build description.
Eric Wing <ewing . public |-at-| gmail . com>
parents:
diff changeset
166 -- file. If a data file length has been specified, the next "Operand 1"
4b915342e2a8 LuaSocket 2.0.2 + CMake build description.
Eric Wing <ewing . public |-at-| gmail . com>
parents:
diff changeset
167 -- octets over the same TCP connection are the intended contents of the
4b915342e2a8 LuaSocket 2.0.2 + CMake build description.
Eric Wing <ewing . public |-at-| gmail . com>
parents:
diff changeset
168 -- data file. In this case, once all of the contents have been
4b915342e2a8 LuaSocket 2.0.2 + CMake build description.
Eric Wing <ewing . public |-at-| gmail . com>
parents:
diff changeset
169 -- delivered, an octet of zero bits is sent as an indication that the
4b915342e2a8 LuaSocket 2.0.2 + CMake build description.
Eric Wing <ewing . public |-at-| gmail . com>
parents:
diff changeset
170 -- file being sent is complete. A second level of acknowledgement
4b915342e2a8 LuaSocket 2.0.2 + CMake build description.
Eric Wing <ewing . public |-at-| gmail . com>
parents:
diff changeset
171 -- processing must occur at this point.
4b915342e2a8 LuaSocket 2.0.2 + CMake build description.
Eric Wing <ewing . public |-at-| gmail . com>
parents:
diff changeset
172
4b915342e2a8 LuaSocket 2.0.2 + CMake build description.
Eric Wing <ewing . public |-at-| gmail . com>
parents:
diff changeset
173
4b915342e2a8 LuaSocket 2.0.2 + CMake build description.
Eric Wing <ewing . public |-at-| gmail . com>
parents:
diff changeset
174 local function send_hdr(con, control)
4b915342e2a8 LuaSocket 2.0.2 + CMake build description.
Eric Wing <ewing . public |-at-| gmail . com>
parents:
diff changeset
175 local sent = con.skt:send(control)
4b915342e2a8 LuaSocket 2.0.2 + CMake build description.
Eric Wing <ewing . public |-at-| gmail . com>
parents:
diff changeset
176 con.try(sent and sent >= 1 , "failed to send header file")
4b915342e2a8 LuaSocket 2.0.2 + CMake build description.
Eric Wing <ewing . public |-at-| gmail . com>
parents:
diff changeset
177 recv_ack(con)
4b915342e2a8 LuaSocket 2.0.2 + CMake build description.
Eric Wing <ewing . public |-at-| gmail . com>
parents:
diff changeset
178 end
4b915342e2a8 LuaSocket 2.0.2 + CMake build description.
Eric Wing <ewing . public |-at-| gmail . com>
parents:
diff changeset
179
4b915342e2a8 LuaSocket 2.0.2 + CMake build description.
Eric Wing <ewing . public |-at-| gmail . com>
parents:
diff changeset
180 local function send_control(con, control)
4b915342e2a8 LuaSocket 2.0.2 + CMake build description.
Eric Wing <ewing . public |-at-| gmail . com>
parents:
diff changeset
181 local sent = con.skt:send(control)
4b915342e2a8 LuaSocket 2.0.2 + CMake build description.
Eric Wing <ewing . public |-at-| gmail . com>
parents:
diff changeset
182 con.try(sent and sent >= 1, "failed to send control file")
4b915342e2a8 LuaSocket 2.0.2 + CMake build description.
Eric Wing <ewing . public |-at-| gmail . com>
parents:
diff changeset
183 send_ack(con)
4b915342e2a8 LuaSocket 2.0.2 + CMake build description.
Eric Wing <ewing . public |-at-| gmail . com>
parents:
diff changeset
184 end
4b915342e2a8 LuaSocket 2.0.2 + CMake build description.
Eric Wing <ewing . public |-at-| gmail . com>
parents:
diff changeset
185
4b915342e2a8 LuaSocket 2.0.2 + CMake build description.
Eric Wing <ewing . public |-at-| gmail . com>
parents:
diff changeset
186 local function send_data(con,fh,size)
4b915342e2a8 LuaSocket 2.0.2 + CMake build description.
Eric Wing <ewing . public |-at-| gmail . com>
parents:
diff changeset
187 local buf
4b915342e2a8 LuaSocket 2.0.2 + CMake build description.
Eric Wing <ewing . public |-at-| gmail . com>
parents:
diff changeset
188 while size > 0 do
4b915342e2a8 LuaSocket 2.0.2 + CMake build description.
Eric Wing <ewing . public |-at-| gmail . com>
parents:
diff changeset
189 buf,message = fh:read(8192)
4b915342e2a8 LuaSocket 2.0.2 + CMake build description.
Eric Wing <ewing . public |-at-| gmail . com>
parents:
diff changeset
190 if buf then
4b915342e2a8 LuaSocket 2.0.2 + CMake build description.
Eric Wing <ewing . public |-at-| gmail . com>
parents:
diff changeset
191 st = con.try(con.skt:send(buf))
4b915342e2a8 LuaSocket 2.0.2 + CMake build description.
Eric Wing <ewing . public |-at-| gmail . com>
parents:
diff changeset
192 size = size - st
4b915342e2a8 LuaSocket 2.0.2 + CMake build description.
Eric Wing <ewing . public |-at-| gmail . com>
parents:
diff changeset
193 else
4b915342e2a8 LuaSocket 2.0.2 + CMake build description.
Eric Wing <ewing . public |-at-| gmail . com>
parents:
diff changeset
194 con.try(size == 0, "file size mismatch")
4b915342e2a8 LuaSocket 2.0.2 + CMake build description.
Eric Wing <ewing . public |-at-| gmail . com>
parents:
diff changeset
195 end
4b915342e2a8 LuaSocket 2.0.2 + CMake build description.
Eric Wing <ewing . public |-at-| gmail . com>
parents:
diff changeset
196 end
4b915342e2a8 LuaSocket 2.0.2 + CMake build description.
Eric Wing <ewing . public |-at-| gmail . com>
parents:
diff changeset
197 recv_ack(con) -- note the double acknowledgement
4b915342e2a8 LuaSocket 2.0.2 + CMake build description.
Eric Wing <ewing . public |-at-| gmail . com>
parents:
diff changeset
198 send_ack(con)
4b915342e2a8 LuaSocket 2.0.2 + CMake build description.
Eric Wing <ewing . public |-at-| gmail . com>
parents:
diff changeset
199 recv_ack(con)
4b915342e2a8 LuaSocket 2.0.2 + CMake build description.
Eric Wing <ewing . public |-at-| gmail . com>
parents:
diff changeset
200 return size
4b915342e2a8 LuaSocket 2.0.2 + CMake build description.
Eric Wing <ewing . public |-at-| gmail . com>
parents:
diff changeset
201 end
4b915342e2a8 LuaSocket 2.0.2 + CMake build description.
Eric Wing <ewing . public |-at-| gmail . com>
parents:
diff changeset
202
4b915342e2a8 LuaSocket 2.0.2 + CMake build description.
Eric Wing <ewing . public |-at-| gmail . com>
parents:
diff changeset
203
4b915342e2a8 LuaSocket 2.0.2 + CMake build description.
Eric Wing <ewing . public |-at-| gmail . com>
parents:
diff changeset
204 --[[
4b915342e2a8 LuaSocket 2.0.2 + CMake build description.
Eric Wing <ewing . public |-at-| gmail . com>
parents:
diff changeset
205 local control_dflt = {
4b915342e2a8 LuaSocket 2.0.2 + CMake build description.
Eric Wing <ewing . public |-at-| gmail . com>
parents:
diff changeset
206 "H"..string.sub(socket.hostname,1,31).."\10", -- host
4b915342e2a8 LuaSocket 2.0.2 + CMake build description.
Eric Wing <ewing . public |-at-| gmail . com>
parents:
diff changeset
207 "C"..string.sub(socket.hostname,1,31).."\10", -- class
4b915342e2a8 LuaSocket 2.0.2 + CMake build description.
Eric Wing <ewing . public |-at-| gmail . com>
parents:
diff changeset
208 "J"..string.sub(filename,1,99).."\10", -- jobname
4b915342e2a8 LuaSocket 2.0.2 + CMake build description.
Eric Wing <ewing . public |-at-| gmail . com>
parents:
diff changeset
209 "L"..string.sub(user,1,31).."\10", -- print banner page
4b915342e2a8 LuaSocket 2.0.2 + CMake build description.
Eric Wing <ewing . public |-at-| gmail . com>
parents:
diff changeset
210 "I"..tonumber(indent).."\10", -- indent column count ('f' only)
4b915342e2a8 LuaSocket 2.0.2 + CMake build description.
Eric Wing <ewing . public |-at-| gmail . com>
parents:
diff changeset
211 "M"..string.sub(mail,1,128).."\10", -- mail when printed user@host
4b915342e2a8 LuaSocket 2.0.2 + CMake build description.
Eric Wing <ewing . public |-at-| gmail . com>
parents:
diff changeset
212 "N"..string.sub(filename,1,131).."\10", -- name of source file
4b915342e2a8 LuaSocket 2.0.2 + CMake build description.
Eric Wing <ewing . public |-at-| gmail . com>
parents:
diff changeset
213 "P"..string.sub(user,1,31).."\10", -- user name
4b915342e2a8 LuaSocket 2.0.2 + CMake build description.
Eric Wing <ewing . public |-at-| gmail . com>
parents:
diff changeset
214 "T"..string.sub(title,1,79).."\10", -- title for banner ('p' only)
4b915342e2a8 LuaSocket 2.0.2 + CMake build description.
Eric Wing <ewing . public |-at-| gmail . com>
parents:
diff changeset
215 "W"..tonumber(width or 132).."\10", -- width of print f,l,p only
4b915342e2a8 LuaSocket 2.0.2 + CMake build description.
Eric Wing <ewing . public |-at-| gmail . com>
parents:
diff changeset
216
4b915342e2a8 LuaSocket 2.0.2 + CMake build description.
Eric Wing <ewing . public |-at-| gmail . com>
parents:
diff changeset
217 "f"..file.."\10", -- formatted print (remove control chars)
4b915342e2a8 LuaSocket 2.0.2 + CMake build description.
Eric Wing <ewing . public |-at-| gmail . com>
parents:
diff changeset
218 "l"..file.."\10", -- print
4b915342e2a8 LuaSocket 2.0.2 + CMake build description.
Eric Wing <ewing . public |-at-| gmail . com>
parents:
diff changeset
219 "o"..file.."\10", -- postscript
4b915342e2a8 LuaSocket 2.0.2 + CMake build description.
Eric Wing <ewing . public |-at-| gmail . com>
parents:
diff changeset
220 "p"..file.."\10", -- pr format - requires T, L
4b915342e2a8 LuaSocket 2.0.2 + CMake build description.
Eric Wing <ewing . public |-at-| gmail . com>
parents:
diff changeset
221 "r"..file.."\10", -- fortran format
4b915342e2a8 LuaSocket 2.0.2 + CMake build description.
Eric Wing <ewing . public |-at-| gmail . com>
parents:
diff changeset
222 "U"..file.."\10", -- Unlink (data file only)
4b915342e2a8 LuaSocket 2.0.2 + CMake build description.
Eric Wing <ewing . public |-at-| gmail . com>
parents:
diff changeset
223 }
4b915342e2a8 LuaSocket 2.0.2 + CMake build description.
Eric Wing <ewing . public |-at-| gmail . com>
parents:
diff changeset
224 ]]
4b915342e2a8 LuaSocket 2.0.2 + CMake build description.
Eric Wing <ewing . public |-at-| gmail . com>
parents:
diff changeset
225
4b915342e2a8 LuaSocket 2.0.2 + CMake build description.
Eric Wing <ewing . public |-at-| gmail . com>
parents:
diff changeset
226 -- generate a varying job number
4b915342e2a8 LuaSocket 2.0.2 + CMake build description.
Eric Wing <ewing . public |-at-| gmail . com>
parents:
diff changeset
227 local seq = 0
4b915342e2a8 LuaSocket 2.0.2 + CMake build description.
Eric Wing <ewing . public |-at-| gmail . com>
parents:
diff changeset
228 local function newjob(connection)
4b915342e2a8 LuaSocket 2.0.2 + CMake build description.
Eric Wing <ewing . public |-at-| gmail . com>
parents:
diff changeset
229 seq = seq + 1
4b915342e2a8 LuaSocket 2.0.2 + CMake build description.
Eric Wing <ewing . public |-at-| gmail . com>
parents:
diff changeset
230 return math.floor(socket.gettime() * 1000 + seq)%1000
4b915342e2a8 LuaSocket 2.0.2 + CMake build description.
Eric Wing <ewing . public |-at-| gmail . com>
parents:
diff changeset
231 end
4b915342e2a8 LuaSocket 2.0.2 + CMake build description.
Eric Wing <ewing . public |-at-| gmail . com>
parents:
diff changeset
232
4b915342e2a8 LuaSocket 2.0.2 + CMake build description.
Eric Wing <ewing . public |-at-| gmail . com>
parents:
diff changeset
233
4b915342e2a8 LuaSocket 2.0.2 + CMake build description.
Eric Wing <ewing . public |-at-| gmail . com>
parents:
diff changeset
234 local format_codes = {
4b915342e2a8 LuaSocket 2.0.2 + CMake build description.
Eric Wing <ewing . public |-at-| gmail . com>
parents:
diff changeset
235 binary = 'l',
4b915342e2a8 LuaSocket 2.0.2 + CMake build description.
Eric Wing <ewing . public |-at-| gmail . com>
parents:
diff changeset
236 text = 'f',
4b915342e2a8 LuaSocket 2.0.2 + CMake build description.
Eric Wing <ewing . public |-at-| gmail . com>
parents:
diff changeset
237 ps = 'o',
4b915342e2a8 LuaSocket 2.0.2 + CMake build description.
Eric Wing <ewing . public |-at-| gmail . com>
parents:
diff changeset
238 pr = 'p',
4b915342e2a8 LuaSocket 2.0.2 + CMake build description.
Eric Wing <ewing . public |-at-| gmail . com>
parents:
diff changeset
239 fortran = 'r',
4b915342e2a8 LuaSocket 2.0.2 + CMake build description.
Eric Wing <ewing . public |-at-| gmail . com>
parents:
diff changeset
240 l = 'l',
4b915342e2a8 LuaSocket 2.0.2 + CMake build description.
Eric Wing <ewing . public |-at-| gmail . com>
parents:
diff changeset
241 r = 'r',
4b915342e2a8 LuaSocket 2.0.2 + CMake build description.
Eric Wing <ewing . public |-at-| gmail . com>
parents:
diff changeset
242 o = 'o',
4b915342e2a8 LuaSocket 2.0.2 + CMake build description.
Eric Wing <ewing . public |-at-| gmail . com>
parents:
diff changeset
243 p = 'p',
4b915342e2a8 LuaSocket 2.0.2 + CMake build description.
Eric Wing <ewing . public |-at-| gmail . com>
parents:
diff changeset
244 f = 'f'
4b915342e2a8 LuaSocket 2.0.2 + CMake build description.
Eric Wing <ewing . public |-at-| gmail . com>
parents:
diff changeset
245 }
4b915342e2a8 LuaSocket 2.0.2 + CMake build description.
Eric Wing <ewing . public |-at-| gmail . com>
parents:
diff changeset
246
4b915342e2a8 LuaSocket 2.0.2 + CMake build description.
Eric Wing <ewing . public |-at-| gmail . com>
parents:
diff changeset
247 -- lp.send{option}
4b915342e2a8 LuaSocket 2.0.2 + CMake build description.
Eric Wing <ewing . public |-at-| gmail . com>
parents:
diff changeset
248 -- requires option.file
4b915342e2a8 LuaSocket 2.0.2 + CMake build description.
Eric Wing <ewing . public |-at-| gmail . com>
parents:
diff changeset
249
4b915342e2a8 LuaSocket 2.0.2 + CMake build description.
Eric Wing <ewing . public |-at-| gmail . com>
parents:
diff changeset
250 send = socket.protect(function(option)
4b915342e2a8 LuaSocket 2.0.2 + CMake build description.
Eric Wing <ewing . public |-at-| gmail . com>
parents:
diff changeset
251 socket.try(option and base.type(option) == "table", "invalid options")
4b915342e2a8 LuaSocket 2.0.2 + CMake build description.
Eric Wing <ewing . public |-at-| gmail . com>
parents:
diff changeset
252 local file = option.file
4b915342e2a8 LuaSocket 2.0.2 + CMake build description.
Eric Wing <ewing . public |-at-| gmail . com>
parents:
diff changeset
253 socket.try(file, "invalid file name")
4b915342e2a8 LuaSocket 2.0.2 + CMake build description.
Eric Wing <ewing . public |-at-| gmail . com>
parents:
diff changeset
254 local fh = socket.try(io.open(file,"rb"))
4b915342e2a8 LuaSocket 2.0.2 + CMake build description.
Eric Wing <ewing . public |-at-| gmail . com>
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255 local datafile_size = fh:seek("end") -- get total size
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256 fh:seek("set") -- go back to start of file
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257 local localhost = socket.dns.gethostname() or os.getenv("COMPUTERNAME")
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258 or "localhost"
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259 local con = connect(localhost, option)
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260 -- format the control file
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261 local jobno = newjob()
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262 local localip = socket.dns.toip(localhost)
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263 localhost = string.sub(localhost,1,31)
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264 local user = string.sub(option.user or os.getenv("LPRUSER") or
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265 os.getenv("USERNAME") or os.getenv("USER") or "anonymous", 1,31)
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266 local lpfile = string.format("dfA%3.3d%-s", jobno, localhost);
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267 local fmt = format_codes[option.format] or 'l'
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268 local class = string.sub(option.class or localip or localhost,1,31)
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269 local _,_,ctlfn = string.find(file,".*[%/%\\](.*)")
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270 ctlfn = string.sub(ctlfn or file,1,131)
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271 local cfile =
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272 string.format("H%-s\nC%-s\nJ%-s\nP%-s\n%.1s%-s\nU%-s\nN%-s\n",
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273 localhost,
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274 class,
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275 option.job or "LuaSocket",
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276 user,
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277 fmt, lpfile,
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278 lpfile,
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279 ctlfn); -- mandatory part of ctl file
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280 if (option.banner) then cfile = cfile .. 'L'..user..'\10' end
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281 if (option.indent) then cfile = cfile .. 'I'..base.tonumber(option.indent)..'\10' end
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282 if (option.mail) then cfile = cfile .. 'M'..string.sub((option.mail),1,128)..'\10' end
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283 if (fmt == 'p' and option.title) then cfile = cfile .. 'T'..string.sub((option.title),1,79)..'\10' end
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284 if ((fmt == 'p' or fmt == 'l' or fmt == 'f') and option.width) then
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285 cfile = cfile .. 'W'..base.tonumber(option,width)..'\10'
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286 end
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287
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288 con.skt:settimeout(option.timeout or 65)
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289 -- send the queue header
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290 send_queue(con, option.queue)
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291 -- send the control file header
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292 local cfilecmd = string.format("\2%d cfA%3.3d%-s\n",string.len(cfile), jobno, localhost);
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293 send_hdr(con,cfilecmd)
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294
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295 -- send the control file
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296 send_control(con,cfile)
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297
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298 -- send the data file header
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299 local dfilecmd = string.format("\3%d dfA%3.3d%-s\n",datafile_size, jobno, localhost);
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300 send_hdr(con,dfilecmd)
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301
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302 -- send the data file
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303 send_data(con,fh,datafile_size)
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304 fh:close()
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305 con.skt:close();
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306 return jobno, datafile_size
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307 end)
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308
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309 --
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310 -- lp.query({host=,queue=printer|'*', format='l'|'s', list=})
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311 --
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312 query = socket.protect(function(p)
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313 p = p or {}
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314 local localhost = socket.dns.gethostname() or os.getenv("COMPUTERNAME")
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315 or "localhost"
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316 local con = connect(localhost,p)
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317 local fmt
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318 if string.sub(p.format or 's',1,1) == 's' then fmt = 3 else fmt = 4 end
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319 con.try(con.skt:send(string.format("%c%s %s\n", fmt, p.queue or "*",
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320 p.list or "")))
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321 local data = con.try(con.skt:receive("*a"))
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322 con.skt:close()
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323 return data
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324 end)