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Top Forums Shell Programming and Scripting Perl Script not working on all directories Post 302603116 by richsark on Wednesday 29th of February 2012 05:52:06 AM
Old 02-29-2012
Hi Tyler ,

In response to your question... The contents in the directories. So dhcp.conf and anything else.

Input file is fine. No changes. Just the files/contents in the directories.

Thank you kindly.
 

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ePerl(3pm)						User Contributed Perl Documentation						ePerl(3pm)

NAME
Parse::ePerl - Perl interface to the ePerl parser SYNOPSIS
use Parse::ePerl; $rc = Parse::ePerl::Preprocess($p); $rc = Parse::ePerl::Translate($p); $rc = Parse::ePerl::Precompile($p); $rc = Parse::ePerl::Evaluate($p); $rc = Parse::ePerl::Expand($p); DESCRIPTION
Parse::ePerl is the Perl 5 interface package to the functionality of the ePerl parser (see eperl(1) for more details about the stand-alone program). It directly uses the parser code from ePerl to translate a bristled script into a plain Perl script and additionally provides functions to precompile such scripts into P-code and evaluate those scripts to a buffer. All functions are parameterized via a hash reference $p which provide the necessary parameters. The result is a return code $rc which indicates success(1) or failure(0). PREPROCESSOR: $rc = Parse::ePerl::Preprocess($p) This is the ePerl preprocessor which expands "#include" directives. See eperl(1) for more details. Possible parameters for $p: Script Scalar holding the input script in source format. Result Reference to scalar receiving the resulting script in bristled Perl format. BeginDelimiter Scalar specifying the begin delimiter. Default is ``"<:"''. EndDelimiter Scalar specifying the end delimiter. Default is ``":>"''. INC A reference to a list specifying include directories. Default is "@INC". TRANSLATION: $rc = Parse::ePerl::Translate($p) This is the actual ePerl parser, i.e. this function converts a bristled ePerl-style script (provided in "$p-"{Script}> as a scalar) to a plain Perl script. The resulting script is stored into a buffer provided via a scalar reference in "$p-"{Result}>. The translation is directly done by the original C function Bristled2Plain() from ePerl, so the resulting script is exactly the same as with the stand-alone program eperl. Possible parameters for $p: Script Scalar holding the input script in bristled format. Result Reference to scalar receiving the resulting script in plain Perl format. BeginDelimiter Scalar specifying the begin delimiter. Default is ``"<:"''. EndDelimiter Scalar specifying the end delimiter. Default is ``":>"''. CaseDelimiters Boolean flag indicating if the delimiters are case-sensitive (1=default) or case-insensitive(0). Example: The following code $script = <<'EOT'; foo <: print "bar"; :> quux EOT Parse::ePerl::Translate({ Script => $script, Result => $script, }); translates the script in $script to the following plain Perl format: print "foo "; print "bar"; print " "; print "quux "; COMPILATION: $rc = Parse::ePerl::Precompile($p); This is an optional step between translation and evaluation where the plain Perl script is compiled from ASCII representation to P-code (the internal Perl bytecode). This step is used in rare cases only, for instance from within Apache::ePerl(3) for caching purposes. Possible parameters for $p: Script Scalar holding the input script in plain Perl format, usually the result from a previous Parse::ePerl::Translate(3) call. Result Reference to scalar receiving the resulting code reference. This code can be later directly used via the &$var construct or given to the Parse::ePerl::Evaluate(3) function. Error Reference to scalar receiving possible error messages from the compilation (e.g. syntax errors). Cwd Directory to switch to while precompiling the script. Name Name of the script for informal references inside error messages. Example: The following code Parse::ePerl::Precompile({ Script => $script, Result => $script, }); translates the plain Perl code (see above) in $script to a code reference and stores the reference again in $script. The code later can be either directly used via &$script instead of "eval($script)" or passed to the Parse::ePerl::Evaluate(3) function. EVALUATION: $rc = Parse::ePerl::Evaluate($p); Beside Parse::ePerl::Translate(3) this is the second main function of this package. It is intended to evaluate the result of Parse::ePerl::Translate(3) in a ePerl-like environment, i.e. this function tries to emulate the runtime environment and behavior of the program eperl. This actually means that it changes the current working directory and evaluates the script while capturing data generated on STDOUT/STDERR. Possible parameters for $p: Script Scalar (standard case) or reference to scalar (compiled case) holding the input script in plain Perl format or P-code, usually the result from a previous Parse::ePerl::Translate(3) or Parse::ePerl::Precompile(3) call. Result Reference to scalar receiving the resulting code reference. Error Reference to scalar receiving possible error messages from the evaluation (e.g. runtime errors). ENV Hash containing the environment for %ENV which should be used while evaluating the script. Cwd Directory to switch to while evaluating the script. Name Name of the script for informal references inside error messages. Example: The following code $script = <<'EOT'; print "foo "; print "bar"; print " "; print "quux "; EOT Parse::ePerl::Evaluate({ Script => $script, Result => $script, }); translates the script in $script to the following plain data: foo bar quux ONE-STEP EXPANSION: $rc = Parse::ePerl::Expand($p); This function just combines, Parse::ePerl::Translate(3) and Parse::ePerl::Evaluate(3) into one step. The parameters in $p are the union of the possible parameters for both functions. This is intended as a high-level interface for Parse::ePerl. AUTHOR
Ralf S. Engelschall rse@engelschall.com www.engelschall.com SEE ALSO
eperl(1) Web-References: Perl: perl(1), http://www.perl.com/ ePerl: eperl(1), http://www.engelschall.com/sw/eperl/ perl v5.14.2 2012-04-07 ePerl(3pm)
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