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root |
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#!/usr/local/bin/perl |
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$DIFF = "/usr/bin/diff"; |
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$PERL = "/usr/bin/perl"; |
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use CGI qw(:standard); |
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use CGI::Carp; |
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print header; |
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print start_html("File Diff Example"); |
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print "<strong>Version </strong>$CGI::VERSION<p>"; |
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print <<EOF; |
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<H1>File Diff Example</H1> |
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Enter two files. When you press "submit" their diff will be |
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produced. |
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EOF |
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; |
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# Start a multipart form. |
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print start_multipart_form; |
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print "File #1:",filefield(-name=>'file1',-size=>45),"<BR>\n"; |
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print "File #2:",filefield(-name=>'file2',-size=>45),"<BR>\n"; |
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print "Diff type: ",radio_group(-name=>'type', |
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-value=>['context','normal']),"<br>\n"; |
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print reset,submit(-name=>'submit',-value=>'Do Diff'); |
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print endform; |
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# Process the form if there is a file name entered |
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$file1 = param('file1'); |
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$file2 = param('file2'); |
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$|=1; # for buffering |
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if ($file1 && $file2) { |
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$realfile1 = tmpFileName($file1); |
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$realfile2 = tmpFileName($file2); |
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print "<HR>\n"; |
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print "<H2>$file1 vs $file2</H2>\n"; |
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print "<PRE>\n"; |
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$options = "-c" if param('type') eq 'context'; |
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system "$DIFF $options $realfile1 $realfile2 | $PERL -pe 's/>/>/g; s/</</g;'"; |
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close $file1; |
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close $file2; |
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print "</PRE>\n"; |
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} |
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print <<EOF; |
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<HR> |
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<A HREF="../cgi_docs.html">CGI documentation</A> |
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<HR> |
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<ADDRESS> |
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<A HREF="/~lstein">Lincoln D. Stein</A> |
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</ADDRESS><BR> |
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Last modified 17 July 1996 |
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EOF |
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; |
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print end_html; |
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sub sanitize { |
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my $name = shift; |
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my($safe) = $name=~/([a-zA-Z0-9._~#,]+)/; |
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unless ($safe) { |
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print "<strong>$name is not a valid Unix filename -- sorry</strong>"; |
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exit 0; |
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} |
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return $safe; |
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} |
