Github user andrewor14 commented on a diff in the pull request:
https://github.com/apache/spark/pull/1845#discussion_r16322977
--- Diff: bin/utils.sh ---
@@ -0,0 +1,108 @@
+#!/usr/bin/env bash
+#
+# Licensed to the Apache Software Foundation (ASF) under one or more
+# contributor license agreements. See the NOTICE file distributed with
+# this work for additional information regarding copyright ownership.
+# The ASF licenses this file to You under the Apache License, Version 2.0
+# (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.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+
+# * ---------------------------------------------------- *
+# | Utility functions for launching Spark applications |
+# * ---------------------------------------------------- *
+
+# Parse the value of a config from a java properties file according to the
specifications in
+#
http://docs.oracle.com/javase/7/docs/api/java/util/Properties.html#load(java.io.Reader).
+# This accepts the name of the config as an argument, and expects the path
of the property
+# file to be found in PROPERTIES_FILE. The value is returned through
JAVA_PROPERTY_VALUE.
+parse_java_property() {
+ JAVA_PROPERTY_VALUE="" # return value
+ config_buffer="" # buffer for collecting parts of a config value
+ multi_line=0 # whether this config is spanning multiple lines
+ while read -r line; do
+ # Strip leading and trailing whitespace
+ line=$(echo "$line" | sed "s/^[[:space:]]\(.*\)[[:space:]]*$/\1/")
+ contains_config=$(echo "$line" | grep -e "^$1")
+ if [[ -n "$contains_config" || "$multi_line" == 1 ]]; then
+ has_more_lines=$(echo "$line" | grep -e "\\\\$")
+ if [[ -n "$has_more_lines" ]]; then
+ # Strip trailing backslash
+ line=$(echo "$line" | sed "s/\\\\$//")
+ config_buffer="$config_buffer $line"
+ multi_line=1
+ else
+ JAVA_PROPERTY_VALUE="$config_buffer $line"
+ break
+ fi
+ fi
+ done < "$PROPERTIES_FILE"
+
+ # Actually extract the value of the config
+ JAVA_PROPERTY_VALUE=$( \
+ echo "$JAVA_PROPERTY_VALUE" | \
+ sed "s/$1//" | \
+ sed "s/^[[:space:]]*[:=]\{0,1\}//" | \
+ sed "s/^[[:space:]]*\(.*\)[[:space:]]*$/\1/g" \
+ )
+ export JAVA_PROPERTY_VALUE
+}
+
+# Properly split java options, dealing with whitespace, double quotes and
backslashes.
+# This accepts a string and returns the resulting list through
SPLIT_JAVA_OPTS.
+split_java_options() {
+ SPLIT_JAVA_OPTS=() # return value
--- End diff --
Yeah, that does exactly what we want.
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