--- /dev/null
+/*
+ * Copyright (C) 2011 The Android Open Source Project
+ *
+ * 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 android.support.v2.util;
+
+import java.io.PrintWriter;
+
+/**
+ * Useful time utilities that are not available on all versions of Android.
+ */
+public class TimeUtils {
+ /** @hide Field length that can hold 999 days of time */
+ public static final int HUNDRED_DAY_FIELD_LEN = 19;
+
+ private static final int SECONDS_PER_MINUTE = 60;
+ private static final int SECONDS_PER_HOUR = 60 * 60;
+ private static final int SECONDS_PER_DAY = 24 * 60 * 60;
+
+ private static final Object sFormatSync = new Object();
+ private static char[] sFormatStr = new char[HUNDRED_DAY_FIELD_LEN+5];
+
+ static private int accumField(int amt, int suffix, boolean always, int zeropad) {
+ if (amt > 99 || (always && zeropad >= 3)) {
+ return 3+suffix;
+ }
+ if (amt > 9 || (always && zeropad >= 2)) {
+ return 2+suffix;
+ }
+ if (always || amt > 0) {
+ return 1+suffix;
+ }
+ return 0;
+ }
+
+ static private int printField(char[] formatStr, int amt, char suffix, int pos,
+ boolean always, int zeropad) {
+ if (always || amt > 0) {
+ final int startPos = pos;
+ if ((always && zeropad >= 3) || amt > 99) {
+ int dig = amt/100;
+ formatStr[pos] = (char)(dig + '0');
+ pos++;
+ amt -= (dig*100);
+ }
+ if ((always && zeropad >= 2) || amt > 9 || startPos != pos) {
+ int dig = amt/10;
+ formatStr[pos] = (char)(dig + '0');
+ pos++;
+ amt -= (dig*10);
+ }
+ formatStr[pos] = (char)(amt + '0');
+ pos++;
+ formatStr[pos] = suffix;
+ pos++;
+ }
+ return pos;
+ }
+
+ private static int formatDurationLocked(long duration, int fieldLen) {
+ if (sFormatStr.length < fieldLen) {
+ sFormatStr = new char[fieldLen];
+ }
+
+ char[] formatStr = sFormatStr;
+
+ if (duration == 0) {
+ int pos = 0;
+ fieldLen -= 1;
+ while (pos < fieldLen) {
+ formatStr[pos] = ' ';
+ }
+ formatStr[pos] = '0';
+ return pos+1;
+ }
+
+ char prefix;
+ if (duration > 0) {
+ prefix = '+';
+ } else {
+ prefix = '-';
+ duration = -duration;
+ }
+
+ int millis = (int)(duration%1000);
+ int seconds = (int) Math.floor(duration / 1000);
+ int days = 0, hours = 0, minutes = 0;
+
+ if (seconds > SECONDS_PER_DAY) {
+ days = seconds / SECONDS_PER_DAY;
+ seconds -= days * SECONDS_PER_DAY;
+ }
+ if (seconds > SECONDS_PER_HOUR) {
+ hours = seconds / SECONDS_PER_HOUR;
+ seconds -= hours * SECONDS_PER_HOUR;
+ }
+ if (seconds > SECONDS_PER_MINUTE) {
+ minutes = seconds / SECONDS_PER_MINUTE;
+ seconds -= minutes * SECONDS_PER_MINUTE;
+ }
+
+ int pos = 0;
+
+ if (fieldLen != 0) {
+ int myLen = accumField(days, 1, false, 0);
+ myLen += accumField(hours, 1, myLen > 0, 2);
+ myLen += accumField(minutes, 1, myLen > 0, 2);
+ myLen += accumField(seconds, 1, myLen > 0, 2);
+ myLen += accumField(millis, 2, true, myLen > 0 ? 3 : 0) + 1;
+ while (myLen < fieldLen) {
+ formatStr[pos] = ' ';
+ pos++;
+ myLen++;
+ }
+ }
+
+ formatStr[pos] = prefix;
+ pos++;
+
+ int start = pos;
+ boolean zeropad = fieldLen != 0;
+ pos = printField(formatStr, days, 'd', pos, false, 0);
+ pos = printField(formatStr, hours, 'h', pos, pos != start, zeropad ? 2 : 0);
+ pos = printField(formatStr, minutes, 'm', pos, pos != start, zeropad ? 2 : 0);
+ pos = printField(formatStr, seconds, 's', pos, pos != start, zeropad ? 2 : 0);
+ pos = printField(formatStr, millis, 'm', pos, true, (zeropad && pos != start) ? 3 : 0);
+ formatStr[pos] = 's';
+ return pos + 1;
+ }
+
+ /** @hide Just for debugging; not internationalized. */
+ public static void formatDuration(long duration, StringBuilder builder) {
+ synchronized (sFormatSync) {
+ int len = formatDurationLocked(duration, 0);
+ builder.append(sFormatStr, 0, len);
+ }
+ }
+
+ /** @hide Just for debugging; not internationalized. */
+ public static void formatDuration(long duration, PrintWriter pw, int fieldLen) {
+ synchronized (sFormatSync) {
+ int len = formatDurationLocked(duration, fieldLen);
+ pw.print(new String(sFormatStr, 0, len));
+ }
+ }
+
+ /** @hide Just for debugging; not internationalized. */
+ public static void formatDuration(long duration, PrintWriter pw) {
+ formatDuration(duration, pw, 0);
+ }
+
+ /** @hide Just for debugging; not internationalized. */
+ public static void formatDuration(long time, long now, PrintWriter pw) {
+ if (time == 0) {
+ pw.print("--");
+ return;
+ }
+ formatDuration(time-now, pw, 0);
+ }
+}
notaz.gp2x.de / android_pandora.git / blobdiff