/*
* Copyright 2014 Google Inc. All rights reserved.
*
* Licensed 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.
*/
package com.google.samples.apps.iosched.util;
import android.content.ContentProvider;
import android.net.Uri;
import android.text.format.Time;
import java.util.ArrayList;
import java.util.regex.Pattern;
/**
* Various utility methods used by {@link com.google.samples.apps.iosched.io.JSONHandler}.
*/
public class ParserUtils {
/** Used to sanitize a string to be {@link Uri} safe. */
private static final Pattern sSanitizePattern = Pattern.compile("[^a-z0-9-_]");
private static final Time sTime = new Time();
/**
* Sanitize the given string to be {@link Uri} safe for building
* {@link ContentProvider} paths.
*/
public static String sanitizeId(String input) {
if (input == null) {
return null;
}
return sSanitizePattern.matcher(input.replace("+", "plus").toLowerCase()).replaceAll("");
}
/**
* Parse the given string as a RFC 3339 timestamp, returning the value as
* milliseconds since the epoch.
*/
public static long parseTime(String time) {
sTime.parse3339(time);
return sTime.toMillis(false);
}
public static String joinStrings(String connector, ArrayList<String> strings, StringBuilder recycle) {
if (strings.size() <= 0) {
return "";
}
if (recycle == null) {
recycle = new StringBuilder();
} else {
recycle.setLength(0);
}
recycle.append(strings.get(0));
for (int i = 1; i < strings.size(); i++) {
recycle.append(connector);
recycle.append(strings.get(i));
}
return recycle.toString();
}
}