AfflictionNetworks/samskivert
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

added truncate(), also a version of toString() that lets you specify the

Browse Source 
field separator (other than the default of ", ") that's been laying around.


git-svn-id: https://samskivert.googlecode.com/svn/trunk@1205 6335cc39-0255-0410-8fd6-9bcaacd3b74c
This commit is contained in:
ray
2003-08-19 23:37:56 +00:00
parent b3a593b727
commit 4b4bf11074
1 changed files with 42 additions and 11 deletions
Download Patch File Download Diff File Expand all files Collapse all files
projects/samskivert/src/java/com/samskivert/util/StringUtil.java
+42 -11
View File
@@ -1,5 +1,5 @@
//
// $Id: StringUtil.java,v 1.56 2003/06/02 23:48:33 mdb Exp $
// $Id: StringUtil.java,v 1.57 2003/08/19 23:37:56 ray Exp $
//
// samskivert library - useful routines for java programs
// Copyright (C) 2001 Michael Bayne
@@ -51,6 +51,18 @@ public class StringUtil
return (value == null || value.trim().length() == 0);
}
/**
* Truncate the specified String if it is longer than maxLength.
*/
public static String truncate (String s, int maxLength)
{
if ((s == null) || (s.length() <= maxLength)) {
return s;
} else {
return s.substring(0, maxLength);
}
}
/**
* Returns a new string based on <code>source</code> with all
* instances of <code>before</code> replaced with <code>after</code>.
@@ -236,13 +248,32 @@ public class StringUtil
*/
public static void toString (StringBuffer buf, Object val,
String openBox, String closeBox)
{
toString(buf, val, openBox, closeBox, ", ");
}
/**
* Converts the supplied value to a string and appends it to the
* supplied string buffer. The specified boxing characters are used to
* enclose list and array types. For example, if "[" and "]" were
* supplied, an int array might be formatted like so: <code>[1, 3,
* 5]</code>.
*
* @param buf the string buffer to which we will append the string.
* @param val the value from which to generate the string.
* @param openBox the opening box character.
* @param closeBox the closing box character.
* @param sep the separator string.
*/
public static void toString (StringBuffer buf, Object val,
String openBox, String closeBox, String sep)
{
if (val instanceof byte[]) {
buf.append(openBox);
byte[] v = (byte[])val;
for (int i = 0; i < v.length; i++) {
if (i > 0) {
buf.append(", ");
buf.append(sep);
}
buf.append(v[i]);
}
@@ -253,7 +284,7 @@ public class StringUtil
short[] v = (short[])val;
for (short i = 0; i < v.length; i++) {
if (i > 0) {
buf.append(", ");
buf.append(sep);
}
buf.append(v[i]);
}
@@ -264,7 +295,7 @@ public class StringUtil
int[] v = (int[])val;
for (int i = 0; i < v.length; i++) {
if (i > 0) {
buf.append(", ");
buf.append(sep);
}
buf.append(v[i]);
}
@@ -275,7 +306,7 @@ public class StringUtil
long[] v = (long[])val;
for (int i = 0; i < v.length; i++) {
if (i > 0) {
buf.append(", ");
buf.append(sep);
}
buf.append(v[i]);
}
@@ -286,7 +317,7 @@ public class StringUtil
float[] v = (float[])val;
for (int i = 0; i < v.length; i++) {
if (i > 0) {
buf.append(", ");
buf.append(sep);
}
buf.append(v[i]);
}
@@ -297,7 +328,7 @@ public class StringUtil
double[] v = (double[])val;
for (int i = 0; i < v.length; i++) {
if (i > 0) {
buf.append(", ");
buf.append(sep);
}
buf.append(v[i]);
}
@@ -308,7 +339,7 @@ public class StringUtil
Object[] v = (Object[])val;
for (int i = 0; i < v.length; i++) {
if (i > 0) {
buf.append(", ");
buf.append(sep);
}
buf.append(toString(v[i]));
}
@@ -319,7 +350,7 @@ public class StringUtil
boolean[] v = (boolean[])val;
for (int i = 0; i < v.length; i++) {
if (i > 0) {
buf.append(", ");
buf.append(sep);
}
buf.append(v[i] ? "t" : "f");
}
@@ -333,7 +364,7 @@ public class StringUtil
Enumeration enum = (Enumeration)val;
for (int i = 0; enum.hasMoreElements(); i++) {
if (i > 0) {
buf.append(", ");
buf.append(sep);
}
buf.append(toString(enum.nextElement()));
}
@@ -344,7 +375,7 @@ public class StringUtil
Iterator iter = (Iterator)val;
for (int i = 0; iter.hasNext(); i++) {
if (i > 0) {
buf.append(", ");
buf.append(sep);
}
buf.append(toString(iter.next()));
}