make my file readable as either Perl or HTML
In the spirit of the "Perl Preamble" where a script works properly whether executed by a shell script interpreter or the Perl interpreter...
I have a Perl script which contains an embedded HTML document (as a "heredoc"), i.e.:
#!/usr/bin/perl
... some Perl code ...
my $html = <<'END' ;
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transit开发者_如何转开发ional//EN">
<HTML><HEAD>
... more HTML ...
</HTML>
END
... Perl code that processes $html ...
I would like to be able to work on the HTML that's inside the Perl script and check it out using a web browser, and only run the script when the HTML is the way I want. To accomplish this, I need the file to be openable both as an HTML file and as a Perl script.
I have tried various tricks with Perl comments and HTML comments but can't get it quite perfect. The file as a whole doesn't have to be "strictly legal" HTML (although the embedded document should be)... just displayable in a browser with no (or minimal) Perl garbage visible.
EDIT: Solved! See my own answer
Read it and weep Mr. @Axeman... I now present to you the empty set:
</dev/fd/0 eval 'exec perl -x -S $0 ${1+"$@"}' #> <!--
#!perl
... some Perl code ...
my $html = << '<!-- END' ; # -->
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML><HEAD>
... more HTML ...
</HTML>
<!-- END
... Perl code that processes $html ...
# -->
This sounds like a path to pain. Consider storing the HTML in a separate file and reading it in within the script.
Maybe this is a job for Markup::Perl:
# don't write this...
print "Content-type: text/html;\n\n";
print "<html>\n<body>\n";
print "<p>\nYour \"lucky number\" is\n";
print "<i>", int rand 10, "</i>\n</p>\n";
print "</body>\n</html>\n";
# write this instead...
use Markup::Perl;
<html><body><p>
Your "lucky number" is
<i><perl> print int rand 10 </perl></i>
</p></body></html>
You could also drop the use Markup::Perl line and run your script like
perl -MMarkup::Perl my_page_with_embedded_perl.html
Then the page should render pretty well.
Sounds to me like you want a templating solution, such as Template::Toolkit or HTML::Template. Embedding HTML in your code or embedding code in your HTML is a recipe for pain.
Have you considered putting Perl inside of HTML?
Like ASP4 does?
It's a lot easier that way - trust me ;-)
加载中,请稍侯......
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