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git-svn-id: https://svn.apache.org/repos/asf/jakarta/commons/proper/lang/trunk@137357 13f79535-47bb-0310-9956-ffa450edef68
This commit is contained in:
Stephen Colebourne 2003-06-08 14:09:36 +00:00
parent 268de4eadf
commit fd6d8a4a3d
1 changed files with 16 additions and 16 deletions
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32
src/java/org/apache/commons/lang/NumberUtils.java
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@ -63,7 +63,7 @@
* @author Stephen Colebourne
* @author <a href="mailto:steve.downey@netfolio.com">Steve Downey</a>
* @since 1.0
* @version $Id: NumberUtils.java,v 1.8 2003/04/09 01:04:47 ggregory Exp $
* @version $Id: NumberUtils.java,v 1.9 2003/06/08 14:09:36 scolebourne Exp $
*/
public final class NumberUtils {
@ -685,7 +685,7 @@ public static boolean isNumber(String str) {
boolean hasDecPoint = false;
boolean allowSigns = false;
boolean foundDigit = false;
//Deal with any possible sign up front
// deal with any possible sign up front
int start = (chars[0] == '-') ? 1 : 0;
if (sz > start + 1) {
if (chars[start] == '0' && chars[start + 1] == 'x') {
@ -693,7 +693,7 @@ public static boolean isNumber(String str) {
if (i == sz) {
return false; // str == "0x"
}
//Checking hex (it can't be anything else)
// checking hex (it can't be anything else)
for (; i < chars.length; i++) {
if ((chars[i] < '0' || chars[i] > '9')
&& (chars[i] < 'a' || chars[i] > 'f')
@ -704,11 +704,11 @@ public static boolean isNumber(String str) {
return true;
}
}
sz--; //Don't want to loop to the last char, check it afterwords
//for type qualifiers
sz--; // don't want to loop to the last char, check it afterwords
// for type qualifiers
int i = start;
//Loop to the next to last char or to the last char if we need another digit to
//make a valid number (e.g. chars[0..5] = "1234E")
// loop to the next to last char or to the last char if we need another digit to
// make a valid number (e.g. chars[0..5] = "1234E")
while (i < sz || (i < sz + 1 && allowSigns && !foundDigit)) {
if (chars[i] >= '0' && chars[i] <= '9') {
foundDigit = true;
@ -716,14 +716,14 @@ public static boolean isNumber(String str) {
} else if (chars[i] == '.') {
if (hasDecPoint || hasExp) {
//Two decimal points or dec in exponent
// two decimal points or dec in exponent
return false;
}
hasDecPoint = true;
} else if (chars[i] == 'e' || chars[i] == 'E') {
//We've already taken care of hex.
// we've already taken care of hex.
if (hasExp) {
//Two E's
// two E's
return false;
}
if (!foundDigit) {
@ -736,7 +736,7 @@ public static boolean isNumber(String str) {
return false;
}
allowSigns = false;
foundDigit = false; //We need a digit after the E
foundDigit = false; // we need a digit after the E
} else {
return false;
}
@ -744,11 +744,11 @@ public static boolean isNumber(String str) {
}
if (i < chars.length) {
if (chars[i] >= '0' && chars[i] <= '9') {
//No type qualifier, OK
// no type qualifier, OK
return true;
}
if (chars[i] == 'e' || chars[i] == 'E') {
//Can't have an E at the last byte
// can't have an E at the last byte
return false;
}
if (!allowSigns
@ -760,12 +760,12 @@ public static boolean isNumber(String str) {
}
if (chars[i] == 'l'
|| chars[i] == 'L') {
//Not allowing L with an exponoent
// not allowing L with an exponoent
return foundDigit && !hasExp;
}
}
//allowSigns is true iff the val ends in 'E'
//Found digit it to make sure weird stuff like '.' and '1E-' doesn't pass
// allowSigns is true iff the val ends in 'E'
// found digit it to make sure weird stuff like '.' and '1E-' doesn't pass
return !allowSigns && foundDigit;
}
}