使我的文件可读为Perl或HTML [英] make my file readable as either Perl or HTML
问题描述
本着 Perl前言，其中脚本可以正常工作，无论是由shell脚本解释器还是Perl解释器执行...
In the spirit of the "Perl Preamble" where a script works properly whether executed by a shell script interpreter or the Perl interpreter...
我有一个Perl脚本，其中包含一个嵌入式HTML文档作为heredoc），即：
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 Transitional//EN">
<HTML><HEAD>
... more HTML ...
</HTML>
END
... Perl code that processes $html ...
$ b b
我想能够处理Perl脚本中的HTML，并使用Web浏览器检查它，并且只有在我需要的时候才运行脚本。要实现这一点，我需要该文件作为一个HTML文件和作为Perl脚本可打开。
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.
我尝试过各种技巧与Perl评论和HTML评论，但可以不会让它相当完美。文件作为一个整体不一定是严格合法的HTML（虽然嵌入的文档应该）...只是可以在浏览器中显示没有（或最少的）Perl垃圾可见。
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.
编辑：解决了！看我自己的答案
Solved! See my own answer
推荐答案
阅读它和武器@Axeman ...我现在向你< ：：
Read it and weap 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 ...
# -->
这篇关于使我的文件可读为Perl或HTML的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
