gecko-dev/webtools/bonsai/get_line.pl

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# -*- Mode: perl; indent-tabs-mode: nil -*-
#
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# The contents of this file are subject to the Netscape Public
# License Version 1.1 (the "License"); you may not use this file
# except in compliance with the License. You may obtain a copy of
# the License at http://www.mozilla.org/NPL/
#
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# Software distributed under the License is distributed on an "AS
# IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
# implied. See the License for the specific language governing
# rights and limitations under the License.
#
# The Original Code is the Bonsai CVS tool.
#
# The Initial Developer of the Original Code is Netscape Communications
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# Corporation. Portions created by Netscape are
# Copyright (C) 1998 Netscape Communications Corporation. All
# Rights Reserved.
#
# Contributor(s):
# Get a line, dealing with '\'. Returns 'undef' when no more lines to return;
# removes blank lines as it goes.
# Allows spaces after a '\'. This is naughty but will probably not matter
# *too* much, and I'm not changing it now.
sub get_line {
my($l, $save);
$l='';
$save='';
my $bContinue = 1;
while( $bContinue && ($l = <MOD>) ){
chop($l);
if( $l =~ /^[ \t]*\#/
|| $l =~ /^[ \t]*$/ ){
$l=''; # Starts with a "#", or is only whitespace.
}
if( $l =~ /\\[ \t]*$/ ){
# Ends with a slash, so append it to the last line.
chop ($l);
$save .= $l . ' ';
$l='';
}
elsif( $l eq '' && $save eq ''){
# ignore blank lines
}
else {
$bContinue = 0;
}
}
if(!defined($l)) {
if($save ne '') {
return $save;
} else {
return $l;
}
} else {
return $save . $l;
}
}
1;