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#!/usr/bin/env perl
# Copyright 2017 Yahoo Holdings. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
#============================================================================
# @version $Id: expand-config.pl,v 1.1 2006-07-26 15:52:43 gv Exp $
# @project Vespa Admin
# @author Gj�ran Voldengen
# @date created 2005-04-15
#
# Create a vespa config file from an application package config file
# that might contain "file=<filename>" statements. The output stream
# consists of the original file contents, with the expanded and escaped
# contents of the files given in file= statements.
#=============================================================================
use strict;
$| = 1;
# Check for correct number of command line args
if ( int(@ARGV) != 0 ) {
die ("\nUsage: cat infile | $0 > outfile\n\n");
}
#============================================================================
# Global Constants
#============================================================================
# "Reserved keywords" to recognize in input file
my $FILE = "file";
#============================================================================
# Subroutines
#============================================================================
#---------------------------------------------------------------------------
# Expand the contents of the input file into a one-line string,
# escaping special chars.
#---------------------------------------------------------------------------
sub expandFile {
my ($filename) = @_;
my $config = "";
# Read the complete input file into a single string
open (INFILE, "$filename") || die "Cannot open $filename\n";
while (<INFILE>) {
$config .= $_;
}
$config =~ s{\\}{\\\\}g;
$config =~ s{\"}{\\\"}g; #" emacs gets confused..
$config =~ s{\n}{\\n}g;
return $config;
}
#============================================================================
# Main program
#============================================================================
my $file = "";
while (<STDIN>) {
# Comment lines are allowed, and must be preserved, along with all
# lines that don't contain "file="
unless (m/^\#/) {
# Allow several files on one line
while (m{$FILE \s* = \s* ([^\s\"]+) }x) { #"
$file = $1;
$file =~ s{^\s+}{};
$file =~ s{\s+ $ }{}x;
$_ = $` . expandFile($file) . $';
}
}
print STDOUT ($_);
}
############################### File end ################################
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