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+#!/usr/bin/perl
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+#
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+# Please read all the comments down to the line that says "TOP".
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+# These comments are divided into three sections:
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+#
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+# 1. usage instructions
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+# 2. installation instructions
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+# 3. standard copyright
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+#
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+# Feel free to share this script with other instructors of programming
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+# classes, but please do not place the script in a publicly accessible
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+# place. Comments, questions, and bug reports should be sent to
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+# moss-request@moss.stanford.edu.
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+#
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+# IMPORTANT: This script is known to work on Unix and on Windows using Cygwin.
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+# It is not known to work on other ways of using Perl under Windows. If the
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+# script does not work for you under Windows, you can try the email-based
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+# version for Windows (available on the Moss home page).
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+#
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+
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+#
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+# Section 1. Usage instructions
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+#
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+# moss [-l language] [-d] [-b basefile1] ... [-b basefilen] [-m #] [-c "string"] file1 file2 file3 ...
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+#
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+# The -l option specifies the source language of the tested programs.
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+# Moss supports many different languages; see the variable "languages" below for the
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+# full list.
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+#
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+# Example: Compare the lisp programs foo.lisp and bar.lisp:
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+#
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+# moss -l lisp foo.lisp bar.lisp
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+#
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+#
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+# The -d option specifies that submissions are by directory, not by file.
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+# That is, files in a directory are taken to be part of the same program,
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+# and reported matches are organized accordingly by directory.
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+#
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+# Example: Compare the programs foo and bar, which consist of .c and .h
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+# files in the directories foo and bar respectively.
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+#
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+# moss -d foo/*.c foo/*.h bar/*.c bar/*.h
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+#
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+# Example: Each program consists of the *.c and *.h files in a directory under
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+# the directory "assignment1."
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+#
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+# moss -d assignment1/*/*.h assignment1/*/*.c
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+#
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+#
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+# The -b option names a "base file". Moss normally reports all code
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+# that matches in pairs of files. When a base file is supplied,
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+# program code that also appears in the base file is not counted in matches.
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+# A typical base file will include, for example, the instructor-supplied
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+# code for an assignment. Multiple -b options are allowed. You should
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+# use a base file if it is convenient; base files improve results, but
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+# are not usually necessary for obtaining useful information.
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+#
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+# IMPORTANT: Unlike previous versions of moss, the -b option *always*
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+# takes a single filename, even if the -d option is also used.
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+#
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+# Examples:
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+#
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+# Submit all of the C++ files in the current directory, using skeleton.cc
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+# as the base file:
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+#
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+# moss -l cc -b skeleton.cc *.cc
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+#
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+# Submit all of the ML programs in directories asn1.96/* and asn1.97/*, where
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+# asn1.97/instructor/example.ml and asn1.96/instructor/example.ml contain the base files.
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+#
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+# moss -l ml -b asn1.97/instructor/example.ml -b asn1.96/instructor/example.ml -d asn1.97/*/*.ml asn1.96/*/*.ml
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+#
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+# The -m option sets the maximum number of times a given passage may appear
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+# before it is ignored. A passage of code that appears in many programs
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+# is probably legitimate sharing and not the result of plagiarism. With -m N,
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+# any passage appearing in more than N programs is treated as if it appeared in
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+# a base file (i.e., it is never reported). Option -m can be used to control
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+# moss' sensitivity. With -m 2, moss reports only passages that appear
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+# in exactly two programs. If one expects many very similar solutions
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+# (e.g., the short first assignments typical of introductory programming
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+# courses) then using -m 3 or -m 4 is a good way to eliminate all but
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+# truly unusual matches between programs while still being able to detect
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+# 3-way or 4-way plagiarism. With -m 1000000 (or any very
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+# large number), moss reports all matches, no matter how often they appear.
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+# The -m setting is most useful for large assignments where one also a base file
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+# expected to hold all legitimately shared code. The default for -m is 10.
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+#
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+# Examples:
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+#
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+# moss -l pascal -m 2 *.pascal
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+# moss -l cc -m 1000000 -b mycode.cc asn1/*.cc
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+#
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+#
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+# The -c option supplies a comment string that is attached to the generated
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+# report. This option facilitates matching queries submitted with replies
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+# received, especially when several queries are submitted at once.
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+#
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+# Example:
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+#
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+# moss -l scheme -c "Scheme programs" *.sch
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+#
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+# The -n option determines the number of matching files to show in the results.
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+# The default is 250.
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+#
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+# Example:
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+# moss -c java -n 200 *.java
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+# The -x option sends queries to the current experimental version of the server.
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+# The experimental server has the most recent Moss features and is also usually
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+# less stable (read: may have more bugs).
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+#
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+# Example:
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+#
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+# moss -x -l ml *.ml
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+#
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+
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+
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+#
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+# Section 2. Installation instructions.
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+#
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+# You may need to change the very first line of this script
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+# if perl is not in /usr/bin on your system. Just replace /usr/bin
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+# with the pathname of the directory where perl resides.
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+#
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+
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+#
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+# 3. Standard Copyright
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+#
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+#Copyright (c) 1997 The Regents of the University of California.
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+#All rights reserved.
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+#
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+#Permission to use, copy, modify, and distribute this software for any
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+#purpose, without fee, and without written agreement is hereby granted,
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+#provided that the above copyright notice and the following two
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+#paragraphs appear in all copies of this software.
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+#
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+#IN NO EVENT SHALL THE UNIVERSITY OF CALIFORNIA BE LIABLE TO ANY PARTY FOR
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+#DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES ARISING OUT
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+#OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN IF THE UNIVERSITY OF
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+#CALIFORNIA HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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+#
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+#THE UNIVERSITY OF CALIFORNIA SPECIFICALLY DISCLAIMS ANY WARRANTIES,
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+#INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
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+#AND FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS
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+#ON AN "AS IS" BASIS, AND THE UNIVERSITY OF CALIFORNIA HAS NO OBLIGATION TO
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+#PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
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+#
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+#
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+# STOP. It should not be necessary to change anything below this line
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+# to use the script.
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+#
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+use IO::Socket;
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+
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+#
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+# As of the date this script was written, the following languages were supported. This script will work with
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+# languages added later however. Check the moss website for the full list of supported languages.
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+#
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+@languages = ("c", "cc", "java", "ml", "pascal", "ada", "lisp", "scheme", "haskell", "fortran", "ascii", "vhdl", "perl", "matlab", "python", "mips", "prolog", "spice", "vb", "csharp", "modula2", "a8086", "javascript", "plsql", "verilog");
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+
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+$server = 'moss.stanford.edu';
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+$port = '7690';
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+$noreq = "Request not sent.";
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+$usage = "usage: moss [-x] [-l language] [-d] [-b basefile1] ... [-b basefilen] [-m #] [-c \"string\"] file1 file2 file3 ...";
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+
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+#
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+# The userid is used to authenticate your queries to the server; don't change it!
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+#
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+$userid=720082582;
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+
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+#
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+# Process the command line options. This is done in a non-standard
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+# way to allow multiple -b's.
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+#
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+$opt_l = "c"; # default language is c
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+$opt_m = 10;
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+$opt_d = 0;
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+$opt_x = 0;
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+$opt_c = "";
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+$opt_n = 250;
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+$bindex = 0; # this becomes non-zero if we have any base files
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+
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+while (@ARGV && ($_ = $ARGV[0]) =~ /^-(.)(.*)/) {
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+ ($first,$rest) = ($1,$2);
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+
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+ shift(@ARGV);
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+ if ($first eq "d") {
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+ $opt_d = 1;
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+ next;
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+ }
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+ if ($first eq "b") {
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+ if($rest eq '') {
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+ die "No argument for option -b.\n" unless @ARGV;
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+ $rest = shift(@ARGV);
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+ }
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+ $opt_b[$bindex++] = $rest;
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+ next;
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+ }
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+ if ($first eq "l") {
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+ if ($rest eq '') {
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+ die "No argument for option -l.\n" unless @ARGV;
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+ $rest = shift(@ARGV);
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+ }
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+ $opt_l = $rest;
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+ next;
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+ }
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+ if ($first eq "m") {
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+ if($rest eq '') {
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+ die "No argument for option -m.\n" unless @ARGV;
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+ $rest = shift(@ARGV);
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+ }
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+ $opt_m = $rest;
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+ next;
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+ }
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+ if ($first eq "c") {
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+ if($rest eq '') {
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+ die "No argument for option -c.\n" unless @ARGV;
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+ $rest = shift(@ARGV);
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+ }
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+ $opt_c = $rest;
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+ next;
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+ }
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+ if ($first eq "n") {
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+ if($rest eq '') {
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+ die "No argument for option -n.\n" unless @ARGV;
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+ $rest = shift(@ARGV);
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+ }
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+ $opt_n = $rest;
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+ next;
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+ }
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+ if ($first eq "x") {
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+ $opt_x = 1;
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+ next;
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+ }
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+ #
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+ # Override the name of the server. This is used for testing this script.
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+ #
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+ if ($first eq "s") {
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+ $server = shift(@ARGV);
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+ next;
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+ }
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+ #
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+ # Override the port. This is used for testing this script.
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+ #
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+ if ($first eq "p") {
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+ $port = shift(@ARGV);
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+ next;
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+ }
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+ die "Unrecognized option -$first. $usage\n";
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+}
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+
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+#
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+# Check a bunch of things first to ensure that the
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+# script will be able to run to completion.
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+#
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+
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+#
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+# Make sure all the argument files exist and are readable.
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+#
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+print "Checking files . . . \n";
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+$i = 0;
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+while($i < $bindex)
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+{
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+ die "Base file $opt_b[$i] does not exist. $noreq\n" unless -e "$opt_b[$i]";
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+ die "Base file $opt_b[$i] is not readable. $noreq\n" unless -r "$opt_b[$i]";
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+ die "Base file $opt_b is not a text file. $noreq\n" unless -T "$opt_b[$i]";
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+ $i++;
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+}
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+foreach $file (@ARGV)
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+{
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+ die "File $file does not exist. $noreq\n" unless -e "$file";
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+ die "File $file is not readable. $noreq\n" unless -r "$file";
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+ die "File $file is not a text file. $noreq\n" unless -T "$file";
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+}
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+
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+if ("@ARGV" eq '') {
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+ die "No files submitted.\n $usage";
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+}
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+print "OK\n";
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+
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+#
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+# Now the real processing begins.
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+#
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+
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+
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+$sock = new IO::Socket::INET (
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+ PeerAddr => $server,
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+ PeerPort => $port,
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+ Proto => 'tcp',
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+ );
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+die "Could not connect to server $server: $!\n" unless $sock;
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+$sock->autoflush(1);
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+
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+sub read_from_server {
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+ $msg = <$sock>;
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+ print $msg;
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+}
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+
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+sub upload_file {
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+ local ($file, $id, $lang) = @_;
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+#
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+# The stat function does not seem to give correct filesizes on windows, so
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+# we compute the size here via brute force.
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+#
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+ open(F,$file);
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+ $size = 0;
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+ while (<F>) {
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+ $size += length($_);
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+ }
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+ close(F);
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+
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+ print "Uploading $file ...";
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+ open(F,$file);
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+ $file =~s/\s/\_/g; # replace blanks in filename with underscores
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+ print $sock "file $id $lang $size $file\n";
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+ while (<F>) {
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+ print $sock $_;
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+ }
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+ close(F);
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+ print "done.\n";
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+}
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+
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+
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+print $sock "moss $userid\n"; # authenticate user
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+print $sock "directory $opt_d\n";
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+print $sock "X $opt_x\n";
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+print $sock "maxmatches $opt_m\n";
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+print $sock "show $opt_n\n";
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+
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+#
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+# confirm that we have a supported languages
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+#
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+print $sock "language $opt_l\n";
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+$msg = <$sock>;
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+chop($msg);
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+if ($msg eq "no") {
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+ print $sock "end\n";
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+ die "Unrecognized language $opt_l.";
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+}
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+
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+
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+# upload any base files
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+$i = 0;
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+while($i < $bindex) {
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+ &upload_file($opt_b[$i++],0,$opt_l);
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+}
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+
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+$setid = 1;
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+foreach $file (@ARGV) {
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+ &upload_file($file,$setid++,$opt_l);
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+}
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+
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+print $sock "query 0 $opt_c\n";
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+print "Query submitted. Waiting for the server's response.\n";
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+&read_from_server();
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+print $sock "end\n";
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+close($sock);
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