| 1 | #!/usr/local/bin/perl |
| 2 | |
| 3 | $DIFF = "/usr/bin/diff"; |
| 4 | $PERL = "/usr/bin/perl"; |
| 5 | |
| 6 | use CGI qw(:standard); |
| 7 | use CGI::Carp; |
| 8 | |
| 9 | print header; |
| 10 | print start_html("File Diff Example"); |
| 11 | print "<strong>Version </strong>$CGI::VERSION<p>"; |
| 12 | |
| 13 | print <<EOF; |
| 14 | <H1>File Diff Example</H1> |
| 15 | Enter two files. When you press "submit" their diff will be |
| 16 | produced. |
| 17 | EOF |
| 18 | ; |
| 19 | |
| 20 | # Start a multipart form. |
| 21 | print start_multipart_form; |
| 22 | print "File #1:",filefield(-name=>'file1',-size=>45),"<BR>\n"; |
| 23 | print "File #2:",filefield(-name=>'file2',-size=>45),"<BR>\n"; |
| 24 | print "Diff type: ",radio_group(-name=>'type', |
| 25 | -value=>['context','normal']),"<br>\n"; |
| 26 | print reset,submit(-name=>'submit',-value=>'Do Diff'); |
| 27 | print endform; |
| 28 | |
| 29 | # Process the form if there is a file name entered |
| 30 | $file1 = param('file1'); |
| 31 | $file2 = param('file2'); |
| 32 | |
| 33 | $|=1; # for buffering |
| 34 | if ($file1 && $file2) { |
| 35 | $realfile1 = tmpFileName($file1); |
| 36 | $realfile2 = tmpFileName($file2); |
| 37 | print "<HR>\n"; |
| 38 | print "<H2>$file1 vs $file2</H2>\n"; |
| 39 | |
| 40 | print "<PRE>\n"; |
| 41 | $options = "-c" if param('type') eq 'context'; |
| 42 | system "$DIFF $options $realfile1 $realfile2 | $PERL -pe 's/>/>/g; s/</</g;'"; |
| 43 | close $file1; |
| 44 | close $file2; |
| 45 | print "</PRE>\n"; |
| 46 | } |
| 47 | |
| 48 | print <<EOF; |
| 49 | <HR> |
| 50 | <A HREF="../cgi_docs.html">CGI documentation</A> |
| 51 | <HR> |
| 52 | <ADDRESS> |
| 53 | <A HREF="/~lstein">Lincoln D. Stein</A> |
| 54 | </ADDRESS><BR> |
| 55 | Last modified 17 July 1996 |
| 56 | EOF |
| 57 | ; |
| 58 | print end_html; |
| 59 | |
| 60 | sub sanitize { |
| 61 | my $name = shift; |
| 62 | my($safe) = $name=~/([a-zA-Z0-9._~#,]+)/; |
| 63 | unless ($safe) { |
| 64 | print "<strong>$name is not a valid Unix filename -- sorry</strong>"; |
| 65 | exit 0; |
| 66 | } |
| 67 | return $safe; |
| 68 | } |