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