webengine/osswebengine/WebKitTools/Scripts/SpacingHeuristics.pm
author Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
Tue, 14 Sep 2010 23:23:58 +0300
branchRCL_3
changeset 95 d96eed154187
parent 0 dd21522fd290
permissions -rw-r--r--
Revision: 201034 Kit: 201035
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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#!/usr/bin/perl -w
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# Copyright (C) 2006 Apple Computer, Inc.  All rights reserved.
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#
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# Redistribution and use in source and binary forms, with or without
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# modification, are permitted provided that the following conditions
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# are met:
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#
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# 1.  Redistributions of source code must retain the above copyright
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#     notice, this list of conditions and the following disclaimer. 
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# 2.  Redistributions in binary form must reproduce the above copyright
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#     notice, this list of conditions and the following disclaimer in the
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#     documentation and/or other materials provided with the distribution. 
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# 3.  Neither the name of Apple Computer, Inc. ("Apple") nor the names of
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#     its contributors may be used to endorse or promote products derived
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#     from this software without specific prior written permission. 
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#
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# THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
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# EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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# WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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# DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
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# DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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# (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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# LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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# ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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# THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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# Used for helping remove extra blank lines from files when processing.
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# see split-class for an example usage (or other scripts in bugzilla)
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BEGIN {
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   use Exporter   ();
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   our ($VERSION, @ISA, @EXPORT, @EXPORT_OK, %EXPORT_TAGS);
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   $VERSION     = 1.00;
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   @ISA         = qw(Exporter);
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   @EXPORT      = qw(&resetSpacingHeuristics &isOnlyWhiteSpace &applySpacingHeuristicsAndPrint &setPreviousAllowedLine &setPreviousAllowedLine &printPendingEmptyLines &ignoringLine);
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   %EXPORT_TAGS = ();
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   @EXPORT_OK   = ();
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}
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our @EXPORT_OK;
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my $justFoundEmptyLine = 0;
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my $previousLineWasDisallowed = 0;
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my $previousAllowedLine = "";
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my $pendingEmptyLines = "";
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sub resetSpacingHeuristics
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{
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    $justFoundEmptyLine = 0;
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    $previousLineWasDisallowed = 0;
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    $previousAllowedLine = "";
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    $pendingEmptyLines = "";
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}
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sub isOnlyWhiteSpace
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{
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    my $line = shift;
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    my $isOnlyWhiteSpace = ($line =~ m/^\s+$/);
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    $pendingEmptyLines .= $line if ($isOnlyWhiteSpace);
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    return $isOnlyWhiteSpace;
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}
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sub applySpacingHeuristicsAndPrint
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{
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    my ($out, $line) = @_;
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    printPendingEmptyLines($out, $line);
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    $previousLineWasDisallowed = 0;
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    print $out $line;
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}
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sub setPreviousAllowedLine
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{
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    my $line = shift;
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    $previousAllowedLine = $line;
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}
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sub printPendingEmptyLines
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{
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    my $out = shift;
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    my $line = shift;
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    if ($previousLineWasDisallowed) {
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        if (!($pendingEmptyLines eq "") && !($previousAllowedLine =~ m/{\s*$/) && !($line =~ m/^\s*}/)) {
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            $pendingEmptyLines = "\n";
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        } else {
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            $pendingEmptyLines = "";
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        }
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    }
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    print $out $pendingEmptyLines;
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    $pendingEmptyLines = "";
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}
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sub ignoringLine
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{
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    # my $line = shift; # ignoring input argument
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    $previousLineWasDisallowed = 1;
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}
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1;