archiveutils.html

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<a name="600" href="#600">600</a>             absTime = absTime % DAY_IN_MS;
<a name="601" href="#601">601</a>         }
<a name="602" href="#602">602</a>         <strong>if</strong> (absTime > HOUR_IN_MS) {
<a name="603" href="#603">603</a>             <em class="comment">//got hours.</em>
<a name="604" href="#604">604</a>             sb.append(absTime / HOUR_IN_MS + <span class="string">"h"</span>);
<a name="605" href="#605">605</a>             absTime = absTime % HOUR_IN_MS;
<a name="606" href="#606">606</a>         }
<a name="607" href="#607">607</a>         <strong>if</strong> (absTime > 60000) {
<a name="608" href="#608">608</a>             sb.append(absTime / 60000 + <span class="string">"m"</span>);
<a name="609" href="#609">609</a>             absTime = absTime % 60000;
<a name="610" href="#610">610</a>         }
<a name="611" href="#611">611</a>         <strong>if</strong> (absTime > 1000) {
<a name="612" href="#612">612</a>             sb.append(absTime / 1000 + <span class="string">"s"</span>);
<a name="613" href="#613">613</a>             absTime = absTime % 1000;
<a name="614" href="#614">614</a>         }
<a name="615" href="#615">615</a>         <strong>if</strong>(toMs) {
<a name="616" href="#616">616</a>             sb.append(absTime + <span class="string">"ms"</span>);
<a name="617" href="#617">617</a>         }
<a name="618" href="#618">618</a>         <strong>return</strong> sb.toString();
<a name="619" href="#619">619</a>     }
<a name="620" href="#620">620</a> 
<a name="621" href="#621">621</a> 
<a name="622" href="#622">622</a>     <em>/**<em>*</em></em>
<a name="623" href="#623">623</a> <em>     * Generate a long UID based on the given class and version number.</em>
<a name="624" href="#624">624</a> <em>     * Using this instead of the default will assume serialization</em>
<a name="625" href="#625">625</a> <em>     * compatibility across class changes unless version number is</em>
<a name="626" href="#626">626</a> <em>     * intentionally bumped.</em>
<a name="627" href="#627">627</a> <em>     *</em>
<a name="628" href="#628">628</a> <em>     * @param class1</em>
<a name="629" href="#629">629</a> <em>     * @param version</em>
<a name="630" href="#630">630</a> <em>     * @return UID based off class and version number.</em>
<a name="631" href="#631">631</a> <em>     */</em>
<a name="632" href="#632">632</a>     <strong>public</strong> <strong>static</strong> <strong>long</strong> <strong>class</strong>nameBasedUID(Class <strong>class</strong>1, <strong>int</strong> version) {
<a name="633" href="#633">633</a>         String callingClassname = <strong>class</strong>1.getName();
<a name="634" href="#634">634</a>         <strong>return</strong> (<strong>long</strong>)callingClassname.hashCode() &lt;&lt; 32 + version;
<a name="635" href="#635">635</a>     }
<a name="636" href="#636">636</a>     
<a name="637" href="#637">637</a>     <em>/**<em>*</em></em>
<a name="638" href="#638">638</a> <em>     * Copy the raw bytes of a long into a byte array, starting at</em>
<a name="639" href="#639">639</a> <em>     * the specified offset.</em>
<a name="640" href="#640">640</a> <em>     * </em>
<a name="641" href="#641">641</a> <em>     * @param l</em>
<a name="642" href="#642">642</a> <em>     * @param array</em>
<a name="643" href="#643">643</a> <em>     * @param offset</em>
<a name="644" href="#644">644</a> <em>     */</em>
<a name="645" href="#645">645</a>     <strong>public</strong> <strong>static</strong> <strong>void</strong> <strong>long</strong>IntoByteArray(<strong>long</strong> l, byte[] array, <strong>int</strong> offset) {
<a name="646" href="#646">646</a>         <strong>int</strong> i, shift;
<a name="647" href="#647">647</a>                   
<a name="648" href="#648">648</a>         <strong>for</strong>(i = 0, shift = 56; i &lt; 8; i++, shift -= 8)
<a name="649" href="#649">649</a>         array[offset+i] = (byte)(0xFF &amp; (l >> shift));
<a name="650" href="#650">650</a>     }
<a name="651" href="#651">651</a>     
<a name="652" href="#652">652</a>     <strong>public</strong> <strong>static</strong> <strong>long</strong> byteArrayIntoLong(byte [] bytearray) {
<a name="653" href="#653">653</a>         <strong>return</strong> byteArrayIntoLong(bytearray, 0);
<a name="654" href="#654">654</a>     }
<a name="655" href="#655">655</a>     
<a name="656" href="#656">656</a>     <em>/**<em>*</em></em>
<a name="657" href="#657">657</a> <em>     * Byte array into long.</em>
<a name="658" href="#658">658</a> <em>     * @param bytearray Array to convert to a long.</em>
<a name="659" href="#659">659</a> <em>     * @param offset Offset into array at which we start decoding the long.</em>
<a name="660" href="#660">660</a> <em>     * @return Long made of the bytes of &lt;code>array&lt;/code> beginning at</em>
<a name="661" href="#661">661</a> <em>     * offset &lt;code>offset&lt;/code>.</em>
<a name="662" href="#662">662</a> <em>     * @see #longIntoByteArray(long, byte[], int)</em>
<a name="663" href="#663">663</a> <em>     */</em>
<a name="664" href="#664">664</a>     <strong>public</strong> <strong>static</strong> <strong>long</strong> byteArrayIntoLong(byte [] bytearray,
<a name="665" href="#665">665</a>             <strong>int</strong> offset) {
<a name="666" href="#666">666</a>         <strong>long</strong> result = 0;
<a name="667" href="#667">667</a>         <strong>for</strong> (<strong>int</strong> i = offset; i &lt; 8 <em class="comment">/*<em class="comment">Bytes in long*/</em>; i++) {</em>
<a name="668" href="#668">668</a>             result = (result &lt;&lt; 8 <em class="comment">/*<em class="comment">Bits in byte*/</em>) |</em>
<a name="669" href="#669">669</a>                 (0xff &amp; (byte)(bytearray[i] &amp; 0xff));
<a name="670" href="#670">670</a>         }
<a name="671" href="#671">671</a>         <strong>return</strong> result;
<a name="672" href="#672">672</a>     }
<a name="673" href="#673">673</a> 
<a name="674" href="#674">674</a>     <em>/**<em>*</em></em>
<a name="675" href="#675">675</a> <em>     * Given a string that may be a plain host or host/path (without</em>
<a name="676" href="#676">676</a> <em>     * URI scheme), add an implied <a href="http://" target="alexandria_uri">http://</a> if necessary. </em>
<a name="677" href="#677">677</a> <em>     * </em>
<a name="678" href="#678">678</a> <em>     * @param u string to evaluate</em>
<a name="679" href="#679">679</a> <em>     * @return string with <a href="http://" target="alexandria_uri">http://</a> added if no scheme already present</em>
<a name="680" href="#680">680</a> <em>     */</em>
<a name="681" href="#681">681</a>     <strong>public</strong> <strong>static</strong> String addImpliedHttpIfNecessary(String u) {
<a name="682" href="#682">682</a>         <strong>if</strong>(u.indexOf(':') == -1 || u.indexOf('.') &lt; u.indexOf(':')) {
<a name="683" href="#683">683</a>             <em class="comment">// No scheme present; prepend "http://"</em>
<a name="684" href="#684">684</a>             u = <span class="string">"http://"</span> + u;
<a name="685" href="#685">685</a>         }
<a name="686" href="#686">686</a>         <strong>return</strong> u;
<a name="687" href="#687">687</a>     }
<a name="688" href="#688">688</a> 
<a name="689" href="#689">689</a>     <em>/**<em>*</em></em>
<a name="690" href="#690">690</a> <em>     * Verify that the array begins with the prefix. </em>
<a name="691" href="#691">691</a> <em>     * </em>
<a name="692" href="#692">692</a> <em>     * @param array</em>
<a name="693" href="#693">693</a> <em>     * @param prefix</em>
<a name="694" href="#694">694</a> <em>     * @return true if array is identical to prefix for the first prefix.length</em>
<a name="695" href="#695">695</a> <em>     * positions </em>
<a name="696" href="#696">696</a> <em>     */</em>
<a name="697" href="#697">697</a>     <strong>public</strong> <strong>static</strong> <strong>boolean</strong> startsWith(byte[] array, byte[] prefix) {
<a name="698" href="#698">698</a>         <strong>if</strong>(prefix.length>array.length) {
<a name="699" href="#699">699</a>             <strong>return</strong> false;
<a name="700" href="#700">700</a>         }
<a name="701" href="#701">701</a>         <strong>for</strong>(<strong>int</strong> i = 0; i &lt; prefix.length; i++) {
<a name="702" href="#702">702</a>             <strong>if</strong>(array[i]!=prefix[i]) {
<a name="703" href="#703">703</a>                 <strong>return</strong> false; 
<a name="704" href="#704">704</a>             }
<a name="705" href="#705">705</a>         }
<a name="706" href="#706">706</a>         <strong>return</strong> <strong>true</strong>; 
<a name="707" href="#707">707</a>     }
<a name="708" href="#708">708</a> 
<a name="709" href="#709">709</a>     <em>/**<em>*</em></em>
<a name="710" href="#710">710</a> <em>     * Utility method to get a String singleLineReport from Reporter</em>
<a name="711" href="#711">711</a> <em>     * @param rep  Reporter to get singleLineReport from</em>
<a name="712" href="#712">712</a> <em>     * @return String of report</em>
<a name="713" href="#713">713</a> <em>     */</em>
<a name="714" href="#714">714</a>     <strong>public</strong> <strong>static</strong> String singleLineReport(<a href="../../../org/archive/util/Reporter.html">Reporter</a> rep) {
<a name="715" href="#715">715</a>         StringWriter sw = <strong>new</strong> StringWriter();
<a name="716" href="#716">716</a>         PrintWriter pw = <strong>new</strong> PrintWriter(sw);
<a name="717" href="#717">717</a>         <strong>try</strong> {
<a name="718" href="#718">718</a>             rep.singleLineReportTo(pw);
<a name="719" href="#719">719</a>         } <strong>catch</strong> (IOException e) {
<a name="720" href="#720">720</a>             <em class="comment">// not really possible</em>
<a name="721" href="#721">721</a>             e.printStackTrace();
<a name="722" href="#722">722</a>         }
<a name="723" href="#723">723</a>         pw.flush();
<a name="724" href="#724">724</a>         <strong>return</strong> sw.toString();
<a name="725" href="#725">725</a>     }
<a name="726" href="#726">726</a> 
<a name="727" href="#727">727</a>     <em>/**<em>*</em></em>
<a name="728" href="#728">728</a> <em>     * Compose the requested report into a String. DANGEROUS IF REPORT</em>
<a name="729" href="#729">729</a> <em>     * CAN BE LARGE.</em>
<a name="730" href="#730">730</a> <em>     * </em>
<a name="731" href="#731">731</a> <em>     * @param rep Reported</em>
<a name="732" href="#732">732</a> <em>     * @param name String name of report to compose</em>
<a name="733" href="#733">733</a> <em>     * @return String of report</em>
<a name="734" href="#734">734</a> <em>     */</em>
<a name="735" href="#735">735</a>     <strong>public</strong> <strong>static</strong> String writeReportToString(<a href="../../../org/archive/util/Reporter.html">Reporter</a> rep, String name) {
<a name="736" href="#736">736</a>         StringWriter sw = <strong>new</strong> StringWriter();
<a name="737" href="#737">737</a>         PrintWriter pw = <strong>new</strong> PrintWriter(sw);
<a name="738" href="#738">738</a>         rep.reportTo(name,pw);
<a name="739" href="#739">739</a>         pw.flush();
<a name="740" href="#740">740</a>         <strong>return</strong> sw.toString();
<a name="741" href="#741">741</a>     }
<a name="742" href="#742">742</a> }
<a name="743" href="#743">743</a> 
</pre>
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