* A control string is a Java string that contains a * control specification. The control specification * starts at the first percent sign (%) in the string, * provided that this percent sign *
* A control specification usually takes the form: *
% ['-+ #0]* [0..9]* { . [0..9]* }+
* { [hlL] }+ [idfgGoxXeEcs]
*
* There are variants of this basic form that are
* discussed below.
** The format is composed of zero or more directives * defined as follows: *
* The results are undefined if there are insufficient * arguments for the format. Usually an unchecked * exception will be thrown. If the format is * exhausted while arguments remain, the excess * arguments are evaluated but are otherwise ignored. * In format strings containing the % form of * conversion specifications, each argument in the * argument list is used exactly once.
*
* Conversions can be applied to the nth
* argument after the format in the argument list,
* rather than to the next unused argument. In this
* case, the conversion characer % is replaced by the
* sequence %n$, where n is
* a decimal integer giving the position of the
* argument in the argument list.
* In format strings containing the %n$
* form of conversion specifications, each argument
* in the argument list is used exactly once.
* The following table lists escape sequences and * associated actions on display devices capable of * the action. *
| Sequence | *Name | *Description |
|---|---|---|
| \\ | backlash | None. * |
| \a | alert | Attempts to alert * the user through audible or visible * notification. * |
| \b | backspace | Moves the * printing position to one column before * the current position, unless the * current position is the start of a line. * |
| \f | form-feed | Moves the * printing position to the initial * printing position of the next logical * page. * |
| \n | newline | Moves the * printing position to the start of the * next line. * |
| \r | carriage-return | Moves * the printing position to the start of * the current line. * |
| \t | tab | Moves the printing * position to the next implementation- * defined horizontal tab position. * |
| \v | vertical-tab | Moves the * printing position to the start of the * next implementation-defined vertical * tab position. * |
* Each conversion specification is introduced by * the percent sign character (%). After the character * %, the following appear in sequence:
** Zero or more flags (in any order), which modify the * meaning of the conversion specification.
** An optional minimum field width. If the converted * value has fewer characters than the field width, it * will be padded with spaces by default on the left; * t will be padded on the right, if the left- * adjustment flag (-), described below, is given to * the field width. The field width takes the form * of a decimal integer. If the conversion character * is s, the field width is the the minimum number of * characters to be printed.
** An optional precision that gives the minumum number * of digits to appear for the d, i, o, x or X * conversions (the field is padded with leading * zeros); the number of digits to appear after the * radix character for the e, E, and f conversions, * the maximum number of significant digits for the g * and G conversions; or the maximum number of * characters to be written from a string is s and S * conversions. The precision takes the form of an * optional decimal digit string, where a null digit * string is treated as 0. If a precision appears * with a c conversion character the precision is * ignored. *
** An optional h specifies that a following d, i, o, * x, or X conversion character applies to a type * short argument (the argument will be promoted * according to the integral promotions and its value * converted to type short before printing).
** An optional l (ell) specifies that a following * d, i, o, x, or X conversion character applies to a * type long argument.
** A field width or precision may be indicated by an * asterisk (*) instead of a digit string. In this * case, an integer argument supplised the field width * precision. The argument that is actually converted * is not fetched until the conversion letter is seen, * so the the arguments specifying field width or * precision must appear before the argument (if any) * to be converted. If the precision argument is * negative, it will be changed to zero. A negative * field width argument is taken as a - flag, followed * by a positive field width.
*
* In format strings containing the %n$
* form of a conversion specification, a field width
* or precision may be indicated by the sequence
* *m$, where m is a decimal integer
* giving the position in the argument list (after the
* format argument) of an integer argument containing
* the field width or precision.
* The format can contain either numbered argument
* specifications (that is, %n$ and
* *m$), or unnumbered argument
* specifications (that is % and *), but normally not
* both. The only exception to this is that %% can
* be mixed with the %n$ form. The
* results of mixing numbered and unnumbered argument
* specifications in a format string are undefined.
* The flags and their meanings are:
** Each conversion character results in fetching zero * or more arguments. The results are undefined if * there are insufficient arguments for the format. * Usually, an unchecked exception will be thrown. * If the format is exhausted while arguments remain, * the excess arguments are ignored.
* ** The conversion characters and their meanings are: *
** If a conversion specification does not match one of * the above forms, an IllegalArgumentException is * thrown and the instance of PrintfFormat is not * created.
** If a floating point value is the internal * representation for infinity, the output is * [+]Infinity, where Infinity is either Infinity or * Inf, depending on the desired output string length. * Printing of the sign follows the rules described * above.
** If a floating point value is the internal * representation for "not-a-number," the output is * [+]NaN. Printing of the sign follows the rules * described above.
** In no case does a non-existent or small field width * cause truncation of a field; if the result of a * conversion is wider than the field width, the field * is simply expanded to contain the conversion result. *
** The behavior is like printf. One exception is that * the minimum number of exponent digits is 3 instead * of 2 for e and E formats when the optional L is used * before the e, E, g, or G conversion character. The * optional L does not imply conversion to a long long * double.
** The biggest divergence from the C printf * specification is in the use of 16 bit characters. * This allows the handling of characters beyond the * small ASCII character set and allows the utility to * interoperate correctly with the rest of the Java * runtime environment.
** Omissions from the C printf specification are * numerous. All the known omissions are present * because Java never uses bytes to represent * characters and does not have pointers:
** Most of this specification is quoted from the Unix * man page for the sprintf utility.
* * @author Allan Jacobs * @version 1 * Release 1: Initial release. * Release 2: Asterisk field widths and precisions * %n$ and *m$ * Bug fixes * g format fix (2 digits in e form corrupt) * rounding in f format implemented * round up when digit not printed is 5 * formatting of -0.0f * round up/down when last digits are 50000... */ public class PrintfFormat { /** * Constructs an array of control specifications * possibly preceded, separated, or followed by * ordinary strings. Control strings begin with * unpaired percent signs. A pair of successive * percent signs designates a single percent sign in * the format. * @param fmtArg Control string. * @exception IllegalArgumentException if the control * string is null, zero length, or otherwise * malformed. */ public PrintfFormat(String fmtArg) throws IllegalArgumentException { this(Locale.getDefault(),fmtArg); } /** * Constructs an array of control specifications * possibly preceded, separated, or followed by * ordinary strings. Control strings begin with * unpaired percent signs. A pair of successive * percent signs designates a single percent sign in * the format. * @param fmtArg Control string. * @exception IllegalArgumentException if the control * string is null, zero length, or otherwise * malformed. */ public PrintfFormat(Locale locale,String fmtArg) throws IllegalArgumentException { dfs = new DecimalFormatSymbols(locale); int ePos=0; ConversionSpecification sFmt=null; String unCS = this.nonControl(fmtArg,0); if (unCS!=null) { sFmt = new ConversionSpecification(); sFmt.setLiteral(unCS); vFmt.addElement(sFmt); } while(cPos!=-1 && cPoss, the next unpaired
* percent sign, or at the end of the String if the
* last character is a percent sign.
* @param s Control string.
* @param start Position in the string
* s to begin looking for the start
* of a control string.
* @return the substring from the start position
* to the beginning of the control string.
*/
private String nonControl(String s,int start) {
String ret="";
cPos=s.indexOf("%",start);
if (cPos==-1) cPos=s.length();
return s.substring(start,cPos);
}
/**
* Format an array of objects. Byte, Short,
* Integer, Long, Float, Double, and Character
* arguments are treated as wrappers for primitive
* types.
* @param o The array of objects to format.
* @return The formatted String.
*/
public String sprintf(Object[] o) {
Enumeration e = vFmt.elements();
ConversionSpecification cs = null;
char c = 0;
int i=0;
StringBuffer sb=new StringBuffer();
while (e.hasMoreElements()) {
cs = (ConversionSpecification)
e.nextElement();
c = cs.getConversionCharacter();
if (c=='\0') sb.append(cs.getLiteral());
else if (c=='%') sb.append("%");
else {
if (cs.isPositionalSpecification()) {
i=cs.getArgumentPosition()-1;
if (cs.isPositionalFieldWidth()) {
int ifw=cs.getArgumentPositionForFieldWidth()-1;
cs.setFieldWidthWithArg(((Integer)o[ifw]).intValue());
}
if (cs.isPositionalPrecision()) {
int ipr=cs.getArgumentPositionForPrecision()-1;
cs.setPrecisionWithArg(((Integer)o[ipr]).intValue());
}
}
else {
if (cs.isVariableFieldWidth()) {
cs.setFieldWidthWithArg(((Integer)o[i]).intValue());
i++;
}
if (cs.isVariablePrecision()) {
cs.setPrecisionWithArg(((Integer)o[i]).intValue());
i++;
}
}
if (o[i] instanceof Byte)
sb.append(cs.internalsprintf(
((Byte)o[i]).byteValue()));
else if (o[i] instanceof Short)
sb.append(cs.internalsprintf(
((Short)o[i]).shortValue()));
else if (o[i] instanceof Integer)
sb.append(cs.internalsprintf(
((Integer)o[i]).intValue()));
else if (o[i] instanceof Long)
sb.append(cs.internalsprintf(
((Long)o[i]).longValue()));
else if (o[i] instanceof Float)
sb.append(cs.internalsprintf(
((Float)o[i]).floatValue()));
else if (o[i] instanceof Double)
sb.append(cs.internalsprintf(
((Double)o[i]).doubleValue()));
else if (o[i] instanceof Character)
sb.append(cs.internalsprintf(
((Character)o[i]).charValue()));
else if (o[i] instanceof String)
sb.append(cs.internalsprintf(
(String)o[i]));
else
sb.append(cs.internalsprintf(
o[i]));
if (!cs.isPositionalSpecification())
i++;
}
}
return sb.toString();
}
/**
* Format nothing. Just use the control string.
* @return the formatted String.
*/
public String sprintf() {
Enumeration e = vFmt.elements();
ConversionSpecification cs = null;
char c = 0;
StringBuffer sb=new StringBuffer();
while (e.hasMoreElements()) {
cs = (ConversionSpecification)
e.nextElement();
c = cs.getConversionCharacter();
if (c=='\0') sb.append(cs.getLiteral());
else if (c=='%') sb.append("%");
}
return sb.toString();
}
/**
* Format an int.
* @param x The int to format.
* @return The formatted String.
* @exception IllegalArgumentException if the
* conversion character is f, e, E, g, G, s,
* or S.
*/
public String sprintf(int x)
throws IllegalArgumentException {
Enumeration e = vFmt.elements();
ConversionSpecification cs = null;
char c = 0;
StringBuffer sb=new StringBuffer();
while (e.hasMoreElements()) {
cs = (ConversionSpecification)
e.nextElement();
c = cs.getConversionCharacter();
if (c=='\0') sb.append(cs.getLiteral());
else if (c=='%') sb.append("%");
else sb.append(cs.internalsprintf(x));
}
return sb.toString();
}
/**
* Format an long.
* @param x The long to format.
* @return The formatted String.
* @exception IllegalArgumentException if the
* conversion character is f, e, E, g, G, s,
* or S.
*/
public String sprintf(long x)
throws IllegalArgumentException {
Enumeration e = vFmt.elements();
ConversionSpecification cs = null;
char c = 0;
StringBuffer sb=new StringBuffer();
while (e.hasMoreElements()) {
cs = (ConversionSpecification)
e.nextElement();
c = cs.getConversionCharacter();
if (c=='\0') sb.append(cs.getLiteral());
else if (c=='%') sb.append("%");
else sb.append(cs.internalsprintf(x));
}
return sb.toString();
}
/**
* Format a double.
* @param x The double to format.
* @return The formatted String.
* @exception IllegalArgumentException if the
* conversion character is c, C, s, S,
* d, d, x, X, or o.
*/
public String sprintf(double x)
throws IllegalArgumentException {
Enumeration e = vFmt.elements();
ConversionSpecification cs = null;
char c = 0;
StringBuffer sb=new StringBuffer();
while (e.hasMoreElements()) {
cs = (ConversionSpecification)
e.nextElement();
c = cs.getConversionCharacter();
if (c=='\0') sb.append(cs.getLiteral());
else if (c=='%') sb.append("%");
else sb.append(cs.internalsprintf(x));
}
return sb.toString();
}
/**
* Format a String.
* @param x The String to format.
* @return The formatted String.
* @exception IllegalArgumentException if the
* conversion character is neither s nor S.
*/
public String sprintf(String x)
throws IllegalArgumentException {
Enumeration e = vFmt.elements();
ConversionSpecification cs = null;
char c = 0;
StringBuffer sb=new StringBuffer();
while (e.hasMoreElements()) {
cs = (ConversionSpecification)
e.nextElement();
c = cs.getConversionCharacter();
if (c=='\0') sb.append(cs.getLiteral());
else if (c=='%') sb.append("%");
else sb.append(cs.internalsprintf(x));
}
return sb.toString();
}
/**
* Format an Object. Convert wrapper types to
* their primitive equivalents and call the
* appropriate internal formatting method. Convert
* Strings using an internal formatting method for
* Strings. Otherwise use the default formatter
* (use toString).
* @param x the Object to format.
* @return the formatted String.
* @exception IllegalArgumentException if the
* conversion character is inappropriate for
* formatting an unwrapped value.
*/
public String sprintf(Object x)
throws IllegalArgumentException {
Enumeration e = vFmt.elements();
ConversionSpecification cs = null;
char c = 0;
StringBuffer sb=new StringBuffer();
while (e.hasMoreElements()) {
cs = (ConversionSpecification)
e.nextElement();
c = cs.getConversionCharacter();
if (c=='\0') sb.append(cs.getLiteral());
else if (c=='%') sb.append("%");
else {
if (x instanceof Byte)
sb.append(cs.internalsprintf(
((Byte)x).byteValue()));
else if (x instanceof Short)
sb.append(cs.internalsprintf(
((Short)x).shortValue()));
else if (x instanceof Integer)
sb.append(cs.internalsprintf(
((Integer)x).intValue()));
else if (x instanceof Long)
sb.append(cs.internalsprintf(
((Long)x).longValue()));
else if (x instanceof Float)
sb.append(cs.internalsprintf(
((Float)x).floatValue()));
else if (x instanceof Double)
sb.append(cs.internalsprintf(
((Double)x).doubleValue()));
else if (x instanceof Character)
sb.append(cs.internalsprintf(
((Character)x).charValue()));
else if (x instanceof String)
sb.append(cs.internalsprintf(
(String)x));
else
sb.append(cs.internalsprintf(x));
}
}
return sb.toString();
}
/**
** ConversionSpecification allows the formatting of * a single primitive or object embedded within a * string. The formatting is controlled by a * format string. Only one Java primitive or * object can be formatted at a time. *
* A format string is a Java string that contains * a control string. The control string starts at * the first percent sign (%) in the string, * provided that this percent sign *
* A control string takes the form: *
% ['-+ #0]* [0..9]* { . [0..9]* }+
* { [hlL] }+ [idfgGoxXeEcs]
*
*
* The behavior is like printf. One (hopefully the
* only) exception is that the minimum number of
* exponent digits is 3 instead of 2 for e and E
* formats when the optional L is used before the
* e, E, g, or G conversion character. The
* optional L does not imply conversion to a long
* long double.
*/
private class ConversionSpecification {
/**
* Constructor. Used to prepare an instance
* to hold a literal, not a control string.
*/
ConversionSpecification() { }
/**
* Constructor for a conversion specification.
* The argument must begin with a % and end
* with the conversion character for the
* conversion specification.
* @param fmtArg String specifying the
* conversion specification.
* @exception IllegalArgumentException if the
* input string is null, zero length, or
* otherwise malformed.
*/
ConversionSpecification(String fmtArg)
throws IllegalArgumentException {
if (fmtArg==null)
throw new NullPointerException();
if (fmtArg.length()==0)
throw new IllegalArgumentException(
"Control strings must have positive"+
" lengths.");
if (fmtArg.charAt(0)=='%') {
fmt = fmtArg;
pos=1;
setArgPosition();
setFlagCharacters();
setFieldWidth();
setPrecision();
setOptionalHL();
if (setConversionCharacter()) {
if (pos==fmtArg.length()) {
if(leadingZeros&&leftJustify)
leadingZeros=false;
if(precisionSet&&leadingZeros){
if(conversionCharacter=='d'
||conversionCharacter=='i'
||conversionCharacter=='o'
||conversionCharacter=='x')
{
leadingZeros=false;
}
}
}
else
throw new IllegalArgumentException(
"Malformed conversion specification="+
fmtArg);
}
else
throw new IllegalArgumentException(
"Malformed conversion specification="+
fmtArg);
}
else
throw new IllegalArgumentException(
"Control strings must begin with %.");
}
/**
* Set the String for this instance.
* @param s the String to store.
*/
void setLiteral(String s) {
fmt = s;
}
/**
* Get the String for this instance. Translate
* any escape sequences.
*
* @return s the stored String.
*/
String getLiteral() {
StringBuffer sb=new StringBuffer();
int i=0;
while (ifalse.
*/
boolean isVariableFieldWidth() {
return variableFieldWidth;
}
/**
* Set the field width with an argument. A
* negative field width is taken as a - flag
* followed by a positive field width.
* @param fw the field width.
*/
void setFieldWidthWithArg(int fw) {
if (fw<0) leftJustify = true;
fieldWidthSet = true;
fieldWidth = Math.abs(fw);
}
/**
* Check whether the specifier has a variable
* precision that is going to be set by an
* argument.
* @return true if the conversion
* uses an * precision; otherwise
* false.
*/
boolean isVariablePrecision() {
return variablePrecision;
}
/**
* Set the precision with an argument. A
* negative precision will be changed to zero.
* @param pr the precision.
*/
void setPrecisionWithArg(int pr) {
precisionSet = true;
precision = Math.max(pr,0);
}
/**
* Format an int argument using this conversion
* specification.
* @param s the int to format.
* @return the formatted String.
* @exception IllegalArgumentException if the
* conversion character is f, e, E, g, or G.
*/
String internalsprintf(int s)
throws IllegalArgumentException {
String s2 = "";
switch(conversionCharacter) {
case 'd':
case 'i':
if (optionalh)
s2 = printDFormat((short)s);
else if (optionall)
s2 = printDFormat((long)s);
else
s2 = printDFormat(s);
break;
case 'x':
case 'X':
if (optionalh)
s2 = printXFormat((short)s);
else if (optionall)
s2 = printXFormat((long)s);
else
s2 = printXFormat(s);
break;
case 'o':
if (optionalh)
s2 = printOFormat((short)s);
else if (optionall)
s2 = printOFormat((long)s);
else
s2 = printOFormat(s);
break;
case 'c':
case 'C':
s2 = printCFormat((char)s);
break;
default:
throw new IllegalArgumentException(
"Cannot format a int with a format using a "+
conversionCharacter+
" conversion character.");
}
return s2;
}
/**
* Format a long argument using this conversion
* specification.
* @param s the long to format.
* @return the formatted String.
* @exception IllegalArgumentException if the
* conversion character is f, e, E, g, or G.
*/
String internalsprintf(long s)
throws IllegalArgumentException {
String s2 = "";
switch(conversionCharacter) {
case 'd':
case 'i':
if (optionalh)
s2 = printDFormat((short)s);
else if (optionall)
s2 = printDFormat(s);
else
s2 = printDFormat((int)s);
break;
case 'x':
case 'X':
if (optionalh)
s2 = printXFormat((short)s);
else if (optionall)
s2 = printXFormat(s);
else
s2 = printXFormat((int)s);
break;
case 'o':
if (optionalh)
s2 = printOFormat((short)s);
else if (optionall)
s2 = printOFormat(s);
else
s2 = printOFormat((int)s);
break;
case 'c':
case 'C':
s2 = printCFormat((char)s);
break;
default:
throw new IllegalArgumentException(
"Cannot format a long with a format using a "+
conversionCharacter+" conversion character.");
}
return s2;
}
/**
* Format a double argument using this conversion
* specification.
* @param s the double to format.
* @return the formatted String.
* @exception IllegalArgumentException if the
* conversion character is c, C, s, S, i, d,
* x, X, or o.
*/
String internalsprintf(double s)
throws IllegalArgumentException {
String s2 = "";
switch(conversionCharacter) {
case 'f':
s2 = printFFormat(s);
break;
case 'E':
case 'e':
s2 = printEFormat(s);
break;
case 'G':
case 'g':
s2 = printGFormat(s);
break;
default:
throw new IllegalArgumentException("Cannot "+
"format a double with a format using a "+
conversionCharacter+" conversion character.");
}
return s2;
}
/**
* Format a String argument using this conversion
* specification.
* @param s the String to format.
* @return the formatted String.
* @exception IllegalArgumentException if the
* conversion character is neither s nor S.
*/
String internalsprintf(String s)
throws IllegalArgumentException {
String s2 = "";
if(conversionCharacter=='s'
|| conversionCharacter=='S')
s2 = printSFormat(s);
else
throw new IllegalArgumentException("Cannot "+
"format a String with a format using a "+
conversionCharacter+" conversion character.");
return s2;
}
/**
* Format an Object argument using this conversion
* specification.
* @param s the Object to format.
* @return the formatted String.
* @exception IllegalArgumentException if the
* conversion character is neither s nor S.
*/
String internalsprintf(Object s) {
String s2 = "";
if(conversionCharacter=='s'
|| conversionCharacter=='S')
s2 = printSFormat(s.toString());
else
throw new IllegalArgumentException(
"Cannot format a String with a format using"+
" a "+conversionCharacter+
" conversion character.");
return s2;
}
/**
* For f format, the flag character '-', means that
* the output should be left justified within the
* field. The default is to pad with blanks on the
* left. '+' character means that the conversion
* will always begin with a sign (+ or -). The
* blank flag character means that a non-negative
* input will be preceded with a blank. If both
* a '+' and a ' ' are specified, the blank flag
* is ignored. The '0' flag character implies that
* padding to the field width will be done with
* zeros instead of blanks.
*
* The field width is treated as the minimum number
* of characters to be printed. The default is to
* add no padding. Padding is with blanks by
* default.
*
* The precision, if set, is the number of digits
* to appear after the radix character. Padding is
* with trailing 0s.
*/
private char[] fFormatDigits(double x) {
// int defaultDigits=6;
String sx,sxOut;
int i,j,k;
int n1In,n2In;
int expon=0;
boolean minusSign=false;
if (x>0.0)
sx = Double.toString(x);
else if (x<0.0) {
sx = Double.toString(-x);
minusSign=true;
}
else {
sx = Double.toString(x);
if (sx.charAt(0)=='-') {
minusSign=true;
sx=sx.substring(1);
}
}
int ePos = sx.indexOf('E');
int rPos = sx.indexOf('.');
if (rPos!=-1) n1In=rPos;
else if (ePos!=-1) n1In=ePos;
else n1In=sx.length();
if (rPos!=-1) {
if (ePos!=-1) n2In = ePos-rPos-1;
else n2In = sx.length()-rPos-1;
}
else
n2In = 0;
if (ePos!=-1) {
int ie=ePos+1;
expon=0;
if (sx.charAt(ie)=='-') {
for (++ie; ietrue if the carry forces
* a round that will change the print still
* more
*/
private boolean startSymbolicCarry(
char[] ca,int cLast,int cFirst) {
boolean carry=true;
for (int i=cLast; carry && i>=cFirst; i--) {
carry = false;
switch(ca[i]) {
case '0': ca[i]='1'; break;
case '1': ca[i]='2'; break;
case '2': ca[i]='3'; break;
case '3': ca[i]='4'; break;
case '4': ca[i]='5'; break;
case '5': ca[i]='6'; break;
case '6': ca[i]='7'; break;
case '7': ca[i]='8'; break;
case '8': ca[i]='9'; break;
case '9': ca[i]='0'; carry=true; break;
}
}
return carry;
}
/**
* An intermediate routine on the way to creating
* an e format String. The method decides whether
* the input double value is an infinity,
* not-a-number, or a finite double and formats
* each type of input appropriately.
* @param x the double value to be formatted.
* @param eChar an 'e' or 'E' to use in the
* converted double value.
* @return the converted double value.
*/
private String eFormatString(double x,char eChar) {
boolean noDigits=false;
char[] ca4,ca5;
if (Double.isInfinite(x)) {
if (x==Double.POSITIVE_INFINITY) {
if (leadingSign) ca4 = "+Inf".toCharArray();
else if (leadingSpace)
ca4 = " Inf".toCharArray();
else ca4 = "Inf".toCharArray();
}
else
ca4 = "-Inf".toCharArray();
noDigits = true;
}
else if (Double.isNaN(x)) {
if (leadingSign) ca4 = "+NaN".toCharArray();
else if (leadingSpace)
ca4 = " NaN".toCharArray();
else ca4 = "NaN".toCharArray();
noDigits = true;
}
else
ca4 = eFormatDigits(x,eChar);
ca5 = applyFloatPadding(ca4,false);
return new String(ca5);
}
/**
* Apply zero or blank, left or right padding.
* @param ca4 array of characters before padding is
* finished
* @param noDigits NaN or signed Inf
* @return a padded array of characters
*/
private char[] applyFloatPadding(
char[] ca4,boolean noDigits) {
char[] ca5 = ca4;
if (fieldWidthSet) {
int i,j,nBlanks;
if (leftJustify) {
nBlanks = fieldWidth-ca4.length;
if (nBlanks > 0) {
ca5 = new char[ca4.length+nBlanks];
for (i=0; ifalse otherwise.
*/
private boolean setConversionCharacter() {
/* idfgGoxXeEcs */
boolean ret = false;
conversionCharacter='\0';
if (pos < fmt.length()) {
char c = fmt.charAt(pos);
if (c=='i'||c=='d'||c=='f'||c=='g'||c=='G'
|| c=='o' || c=='x' || c=='X' || c=='e'
|| c=='E' || c=='c' || c=='s' || c=='%') {
conversionCharacter = c;
pos++;
ret = true;
}
}
return ret;
}
/**
* Check for an h, l, or L in a format. An L is
* used to control the minimum number of digits
* in an exponent when using floating point
* formats. An l or h is used to control
* conversion of the input to a long or short,
* respectively, before formatting. If any of
* these is present, store them.
*/
private void setOptionalHL() {
optionalh=false;
optionall=false;
optionalL=false;
if (pos < fmt.length()) {
char c = fmt.charAt(pos);
if (c=='h') { optionalh=true; pos++; }
else if (c=='l') { optionall=true; pos++; }
else if (c=='L') { optionalL=true; pos++; }
}
}
/**
* Set the precision.
*/
private void setPrecision() {
int firstPos = pos;
precisionSet = false;
if (pos