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package Simple::Filter::Macro; |
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# Set the VERSION. |
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$VERSION = "0.06"; |
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# Load the Perl pragmas. |
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use strict; |
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use warnings; |
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# --------------------------------------------------------------------------- # |
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# The outer value of $_ is the content from the module. The inner value of # |
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# $_ is the content from the script. The Perl function caller is used as # |
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# follows. E.g. one can write my ($package, $filename, $line) = caller($i) # |
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# where $i is the level of interest. The elements of the array can be reached # |
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# as it is known by caller(0)[0] which results the package name of level 0. # |
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# caller(5) returns the data from the module and caller(6) returns the data # |
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# from the script. # |
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# --------------------------------------------------------------------------- # |
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# Outer filter starts here. |
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use Filter::Simple::Compile sub { |
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# Remove the module terminator from the module content. |
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$_ =~ s/1;\s//g; |
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# Create the modified script content. |
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$_ = sprintf( |
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# Create a single-quoted string for output. |
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q( |
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# Inner filter starts here. |
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use Filter::Simple::Compile sub { |
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# Concatenate content from module and script. |
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$_ = join("\n", |
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'# Line %s %s', "%s", '# Line %s %s', |
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$_, |
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); |
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}; |
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# Inner filter ends here. |
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1; |
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), (caller(5))[2], (caller(5))[1], |
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$_, |
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(caller(6))[2], (caller(6))[1]); |
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}; |
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# Outer filter ends here. |
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1; |
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__END__ |