X-Git-Url: http://git.nikiroo.be/?a=blobdiff_plain;f=src%2Fbe%2Fnikiroo%2Futils%2FStringUtils.java;h=9acf3a1fd2a72d400168ba74ce515915a7e7fae7;hb=6003347809dbeb2d8af2fa0ef396baa93a201ec1;hp=ef3d84b921aea488f5ce17e5b8b52334cf24a375;hpb=a43e4f72629d04cd3122bde830b6e4925fd3aa91;p=nikiroo-utils.git

diff --git a/src/be/nikiroo/utils/StringUtils.java b/src/be/nikiroo/utils/StringUtils.java
index ef3d84b..9acf3a1 100644
--- a/src/be/nikiroo/utils/StringUtils.java
+++ b/src/be/nikiroo/utils/StringUtils.java
@@ -795,6 +795,115 @@ public class StringUtils {
 		return new String(unbase64(data, offset, count, zip), "UTF-8");
 	}
 
+	/**
+	 * Return a display {@link String} for the given value, which can be
+	 * suffixed with "k" or "M" depending upon the number, if it is big enough.
+	 * <p>
+	 * Example:
+	 * <ul>
+	 * <li><tt>8765</tt> becomes "8k"</li>
+	 * <li><tt>998765</tt> becomes "998k"</li>
+	 * <li><tt>12987364</tt> becomes "12M"</li>
+	 * </ul>
+	 * 
+	 * @param value
+	 *            the value to convert
+	 * 
+	 * @return the display value
+	 */
+	public static String formatNumber(long value) {
+		return formatNumber(value, true);
+	}
+
+	/**
+	 * Return a display {@link String} for the given value, which can be
+	 * suffixed with "k" or "M" depending upon the number, if it is big enough.
+	 * <p>
+	 * Example:
+	 * <ul>
+	 * <li><tt>8765</tt> becomes "8k"</li>
+	 * <li><tt>998765</tt> becomes "998k"</li>
+	 * <li><tt>12987364</tt> becomes "12M"</li>
+	 * </ul>
+	 * 
+	 * @param value
+	 *            the value to convert
+	 * @param strict
+	 *            TRUE if you want any value equals or greater than 1000 to use
+	 *            the "k" suffix; FALSE if you want to go a bit higher and only
+	 *            use "k" for values equal or greater than 4000
+	 * 
+	 * @return the display value
+	 */
+	public static String formatNumber(long value, boolean strict) {
+		if (value >= 1000000l) {
+			return Long.toString(value / 1000000l) + "M";
+		}
+
+		if ((strict && value >= 1000l) || (!strict && value >= 4000l)) {
+			return Long.toString(value / 1000l) + "k";
+		}
+
+		return Long.toString(value);
+	}
+
+	/**
+	 * The reverse operation to {@link StringUtils#formatNumber(long)}: it will
+	 * read a "display" number that can contain a "M" or "k" suffix and return
+	 * the full value.
+	 * <p>
+	 * Of course, the conversion to and from display form is lossy (example:
+	 * <tt>6870</tt> to "6k" to <tt>6000</tt>).
+	 * 
+	 * @param value
+	 *            the value in display form with possible "M" and "k" suffixes,
+	 *            can be NULL
+	 * 
+	 * @return the value as a number, or 0 if not possible to convert
+	 */
+	public static long toNumber(String value) {
+		return toNumber(value, 0l);
+	}
+
+	/**
+	 * The reverse operation to {@link StringUtils#formatNumber(long)}: it will
+	 * read a "display" number that can contain a "M" or "k" suffix and return
+	 * the full value.
+	 * <p>
+	 * Of course, the conversion to and from display form is lossy (example:
+	 * <tt>6870</tt> to "6k" to <tt>6000</tt>).
+	 * 
+	 * @param value
+	 *            the value in display form with possible "M" and "k" suffixes,
+	 *            can be NULL
+	 * @param def
+	 *            the default value if it is not possible to convert the given
+	 *            value to a number
+	 * 
+	 * @return the value as a number, or 0 if not possible to convert
+	 */
+	public static long toNumber(String value, long def) {
+		long count = def;
+		if (value != null) {
+			try {
+				if (value.toLowerCase().endsWith("m")) {
+					count = Long.parseLong(value.substring(0,
+							value.length() - 1).trim());
+					count *= 1000000;
+				} else if (value.toLowerCase().endsWith("k")) {
+					count = Long.parseLong(value.substring(0,
+							value.length() - 1).trim());
+					count *= 1000;
+				} else {
+					count = Long.parseLong(value);
+				}
+			} catch (NumberFormatException pe) {
+			}
+		}
+
+		return count;
+	}
+
 	/**
 	 * The "remove accents" pattern.
 	 *