Code drop from //branches/cupcake/...@124589

1 files changed, 140 insertions, 0 deletions

diff --git a/WebCore/bindings/scripts/InFilesParser.pm b/WebCore/bindings/scripts/InFilesParser.pm
new file mode 100644
index 0000000..89664ed
--- /dev/null
+++ b/WebCore/bindings/scripts/InFilesParser.pm
@@ -0,0 +1,140 @@
+#!/usr/bin/perl -w
+
+# Copyright (C) 2008 Julien Chaffraix <jchaffraix@webkit.org>
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions
+# are met:
+# 1. Redistributions of source code must retain the above copyright
+#    notice, this list of conditions and the following disclaimer.
+# 2. Redistributions in binary form must reproduce the above copyright
+#    notice, this list of conditions and the following disclaimer in the
+#    documentation and/or other materials provided with the distribution.
+#
+# THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
+# EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+# PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE COMPUTER, INC. OR
+# CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+# EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+# PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+# PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
+# OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 
+#
+
+use strict;
+
+package InFilesParser;
+
+my $isParsingCommonParameters;
+my $hasStartedParsing;
+
+# Helper functions
+
+sub trimComment
+{   
+    my $string = shift;
+    $string =~ s/#.+$//;
+    chomp($string);
+    return $string;
+}
+
+sub trimWS
+{
+    my $string = shift;
+    $string =~ s/^\s+//;
+    $string =~ s/\s+$//;
+    chomp($string);
+    return $string;
+}
+
+sub trimQuoteAndWS
+{
+    my $string = shift;
+    $string =~ s/\"([^\"]+)\"/$1/;
+    return trimWS($string);
+}
+
+# Default constructor
+
+sub new
+{
+    my $object = shift;
+    my $reference = { };
+
+    # Initialize the parser.
+    $isParsingCommonParameters = 1;
+    $hasStartedParsing = 0;
+
+    bless($reference, $object);
+    return $reference;
+}
+
+# parse take 3 attributes:
+# - the filestream to read from (the caller has to open / close it).
+# - the commonParameterHandler called when parsing the first part of the file with the parameter and the value.
+# - the perTagHandler called for each optional parameter with the element name, the parameter and its value.
+#   If no parameter were provided, it is called once with an empty parameter and value.
+sub parse($)
+{
+    my $object = shift;
+    my $fileStream = shift; # IO::File only
+    my $commonParameterHandler = shift;
+    my $perTagHandler = shift;
+
+    foreach (<$fileStream>) {
+        # Empty line, change from common parameter part
+        # to per tag part if we have started parsing.
+        if (/^$/) {
+            if ($hasStartedParsing) {
+                $isParsingCommonParameters = 0;
+            }
+            next;
+        }
+
+        # There may be a few empty lines at the beginning of the file
+        # so detect the first non empty line which starts the common
+        # parameters part.
+        $hasStartedParsing = 1;
+
+        if (/^#/) {
+            next;
+        }
+
+        $_ = trimComment($_);
+
+        if ($isParsingCommonParameters) {
+            my ($name, $value) = split '=', $_;
+
+            $name = trimWS($name);
+            $value = trimQuoteAndWS($value);
+
+            &$commonParameterHandler($name, $value);
+        } else {
+            # Parsing per-tag parameters.
+
+            # Split the tag name ($1) from the optionnal parameter(s) ($2)
+            /^(\S+)\s*(.*)$/;
+            my $elementName = $1;
+
+            if ($2) {
+                my @options = split "," , $2;
+                my ($option, $value);
+                for (my $i = 0; $i < @options; ++$i) {
+                    ($option, $value) = split "=", $options[$i];
+                    $option = trimWS($option);
+                    $value = trimQuoteAndWS($value);
+
+                    &$perTagHandler($elementName, $option, $value);
+                }
+            } else {
+                # No parameter was given so call it with empty strings.
+                &$perTagHandler($elementName, "", "");
+            }
+        }
+    }
+}
+
+1;