/*
*
*
* Copyright 1990-2007 Sun Microsystems, Inc. All Rights Reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License version
* 2 only, as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License version 2 for more details (a copy is
* included at /legal/license.txt).
*
* You should have received a copy of the GNU General Public License
* version 2 along with this work; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA
*
* Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa
* Clara, CA 95054 or visit www.sun.com if you need additional
* information or have any questions.
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//
// (c) 2000 Sun Microsystems, Inc.
// ALL RIGHTS RESERVED
//
// License Grant-
//
//
// Permission to use, copy, modify, and distribute this Software and its
// documentation for NON-COMMERCIAL or COMMERCIAL purposes and without fee is
// hereby granted.
//
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// implied warranty of merchantability, satisfactory quality, fitness for a
// particular purpose, or non-infringement, are disclaimed, except to the extent
// that such disclaimers are held to be legally invalid.
//
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// the design, construction, operation or maintenance of any nuclear facility
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// Please refer to the file http://www.sun.com/policies/trademarks/ for further
// important trademark information and to
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import java.util.Enumeration;
import java.util.Vector;
import java.util.Locale;
import java.text.DecimalFormatSymbols;
/**
* PrintfFormat allows the formatting of an array of
* objects embedded within a string. Primitive types
* must be passed using wrapper types. The formatting
* is controlled by a control string.
*<p>
* 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
*<ol>
*<li>is not escaped protected by a matching % or is
* not an escape % character,
*<li>is not at the end of the format string, and
*<li>precedes a sequence of characters that parses as
* a valid control specification.
*</ol>
*</p><p>
* A control specification usually takes the form:
*<pre> % ['-+ #0]* [0..9]* { . [0..9]* }+
* { [hlL] }+ [idfgGoxXeEcs]
*</pre>
* There are variants of this basic form that are
* discussed below.</p>
*<p>
* The format is composed of zero or more directives
* defined as follows:
*<ul>
*<li>ordinary characters, which are simply copied to
* the output stream;
*<li>escape sequences, which represent non-graphic
* characters; and
*<li>conversion specifications, each of which
* results in the fetching of zero or more arguments.
*</ul></p>
*<p>
* 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.</p>
* <p>
* Conversions can be applied to the <code>n</code>th
* 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 %<code>n</code>$, where <code>n</code> is
* a decimal integer giving the position of the
* argument in the argument list.</p>
* <p>
* In format strings containing the %<code>n</code>$
* form of conversion specifications, each argument
* in the argument list is used exactly once.</p>
*
*<h4>Escape Sequences</h4>
*<p>
* The following table lists escape sequences and
* associated actions on display devices capable of
* the action.
*<table>
*<tr><th align=left>Sequence</th>
* <th align=left>Name</th>
* <th align=left>Description</th></tr>
*<tr><td>\\</td><td>backlash</td><td>None.
*</td></tr>
*<tr><td>\a</td><td>alert</td><td>Attempts to alert
* the user through audible or visible
* notification.
*</td></tr>
*<tr><td>\b</td><td>backspace</td><td>Moves the
* printing position to one column before
* the current position, unless the
* current position is the start of a line.
*</td></tr>
*<tr><td>\f</td><td>form-feed</td><td>Moves the
* printing position to the initial
* printing position of the next logical
* page.
*</td></tr>
*<tr><td>\n</td><td>newline</td><td>Moves the
* printing position to the start of the
* next line.
*</td></tr>
*<tr><td>\r</td><td>carriage-return</td><td>Moves
* the printing position to the start of
* the current line.
*</td></tr>
*<tr><td>\t</td><td>tab</td><td>Moves the printing
* position to the next implementation-
* defined horizontal tab position.
*</td></tr>
*<tr><td>\v</td><td>vertical-tab</td><td>Moves the
* printing position to the start of the
* next implementation-defined vertical
* tab position.
*</td></tr>
*</table></p>
*<h4>Conversion Specifications</h4>
*<p>
* Each conversion specification is introduced by
* the percent sign character (%). After the character
* %, the following appear in sequence:</p>
*<p>
* Zero or more flags (in any order), which modify the
* meaning of the conversion specification.</p>
*<p>
* 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.</p>
*<p>
* 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.
* </p>
*<p>
* 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).</p>
*<p>
* An optional l (ell) specifies that a following
* d, i, o, x, or X conversion character applies to a
* type long argument.</p>
*<p>
* 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.</p>
* <p>
* In format strings containing the %<code>n</code>$
* form of a conversion specification, a field width
* or precision may be indicated by the sequence
* *<code>m</code>$, where m is a decimal integer
* giving the position in the argument list (after the
* format argument) of an integer argument containing
* the field width or precision.</p>
* <p>
* The format can contain either numbered argument
* specifications (that is, %<code>n</code>$ and
* *<code>m</code>$), or unnumbered argument
* specifications (that is % and *), but normally not
* both. The only exception to this is that %% can
* be mixed with the %<code>n</code>$ form. The
* results of mixing numbered and unnumbered argument
* specifications in a format string are undefined.</p>
*
*<h4>Flag Characters</h4>
*<p>
* The flags and their meanings are:</p>
*<dl>
* <dt>'<dd> integer portion of the result of a
* decimal conversion (%i, %d, %f, %g, or %G) will
* be formatted with thousands' grouping
* characters. For other conversions the flag
* is ignored. The non-monetary grouping
* character is used.
* <dt>-<dd> result of the conversion is left-justified
* within the field. (It will be right-justified
* if this flag is not specified).</td></tr>
* <dt>+<dd> result of a signed conversion always
* begins with a sign (+ or -). (It will begin
* with a sign only when a negative value is
* converted if this flag is not specified.)
* <dt><space><dd> If the first character of a
* signed conversion is not a sign, a space
* character will be placed before the result.
* This means that if the space character and +
* flags both appear, the space flag will be
* ignored.
* <dt>#<dd> value is to be converted to an alternative
* form. For c, d, i, and s conversions, the flag
* has no effect. For o conversion, it increases
* the precision to force the first digit of the
* result to be a zero. For x or X conversion, a
* non-zero result has 0x or 0X prefixed to it,
* respectively. For e, E, f, g, and G
* conversions, the result always contains a radix
* character, even if no digits follow the radix
* character (normally, a decimal point appears in
* the result of these conversions only if a digit
* follows it). For g and G conversions, trailing
* zeros will not be removed from the result as
* they normally are.
* <dt>0<dd> d, i, o, x, X, e, E, f, g, and G
* conversions, leading zeros (following any
* indication of sign or base) are used to pad to
* the field width; no space padding is
* performed. If the 0 and - flags both appear,
* the 0 flag is ignored. For d, i, o, x, and X
* conversions, if a precision is specified, the
* 0 flag will be ignored. For c conversions,
* the flag is ignored.
*</dl>
*
*<h4>Conversion Characters</h4>
*<p>
* 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.</p>
*
*<p>
* The conversion characters and their meanings are:
*</p>
*<dl>
* <dt>d,i<dd>The int argument is converted to a
* signed decimal in the style [-]dddd. The
* precision specifies the minimum number of
* digits to appear; if the value being
* converted can be represented in fewer
* digits, it will be expanded with leading
* zeros. The default precision is 1. The
* result of converting 0 with an explicit
* precision of 0 is no characters.
* <dt>o<dd> The int argument is converted to unsigned
* octal format in the style ddddd. The
* precision specifies the minimum number of
* digits to appear; if the value being
* converted can be represented in fewer
* digits, it will be expanded with leading
* zeros. The default precision is 1. The
* result of converting 0 with an explicit
* precision of 0 is no characters.
* <dt>x<dd> The int argument is converted to unsigned
* hexadecimal format in the style dddd; the
* letters abcdef are used. The precision
* specifies the minimum numberof digits to
* appear; if the value being converted can be
* represented in fewer digits, it will be
* expanded with leading zeros. The default
* precision is 1. The result of converting 0
* with an explicit precision of 0 is no
* characters.
* <dt>X<dd> Behaves the same as the x conversion
* character except that letters ABCDEF are
* used instead of abcdef.
* <dt>f<dd> The floating point number argument is
* written in decimal notation in the style
* [-]ddd.ddd, where the number of digits after
* the radix character (shown here as a decimal
* point) is equal to the precision
* specification. A Locale is used to determine
* the radix character to use in this format.
* If the precision is omitted from the
* argument, six digits are written after the
* radix character; if the precision is
* explicitly 0 and the # flag is not specified,
* no radix character appears. If a radix
* character appears, at least 1 digit appears
* before it. The value is rounded to the
* appropriate number of digits.
* <dt>e,E<dd>The floating point number argument is
* written in the style [-]d.ddde{+-}dd
* (the symbols {+-} indicate either a plus or
* minus sign), where there is one digit before
* the radix character (shown here as a decimal
* point) and the number of digits after it is
* equal to the precision. A Locale is used to
* determine the radix character to use in this
* format. When the precision is missing, six
* digits are written after the radix character;
* if the precision is 0 and the # flag is not
* specified, no radix character appears. The
* E conversion will produce a number with E
* instead of e introducing the exponent. The
* exponent always contains at least two digits.
* However, if the value to be written requires
* an exponent greater than two digits,
* additional exponent digits are written as
* necessary. The value is rounded to the
* appropriate number of digits.
* <dt>g,G<dd>The floating point number argument is
* written in style f or e (or in sytle E in the
* case of a G conversion character), with the
* precision specifying the number of
* significant digits. If the precision is
* zero, it is taken as one. The style used
* depends on the value converted: style e
* (or E) will be used only if the exponent
* resulting from the conversion is less than
* -4 or greater than or equal to the precision.
* Trailing zeros are removed from the result.
* A radix character appears only if it is
* followed by a digit.
* <dt>c,C<dd>The integer argument is converted to a
* char and the result is written.
*
* <dt>s,S<dd>The argument is taken to be a string and
* bytes from the string are written until the
* end of the string or the number of bytes
* indicated by the precision specification of
* the argument is reached. If the precision
* is omitted from the argument, it is taken to
* be infinite, so all characters up to the end
* of the string are written.
* <dt>%<dd>Write a % character; no argument is
* converted.
*</dl>
*<p>
* If a conversion specification does not match one of
* the above forms, an IllegalArgumentException is
* thrown and the instance of PrintfFormat is not
* created.</p>
*<p>
* 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.</p>
*<p>
* 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.</p>
*<p>
* 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.
*</p>
*<p>
* 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. </p>
* <p>
* 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.</p>
*<p>
* 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:</p>
*<ul>
* <li>%c is the same as %C.
* <li>%s is the same as %S.
* <li>u, p, and n conversion characters.
* <li>%ws format.
* <li>h modifier applied to an n conversion character.
* <li>l (ell) modifier applied to the c, n, or s
* conversion characters.
* <li>ll (ell ell) modifier to d, i, o, u, x, or X
* conversion characters.
* <li>ll (ell ell) modifier to an n conversion
* character.
* <li>c, C, d,i,o,u,x, and X conversion characters
* apply to Byte, Character, Short, Integer, Long
* types.
* <li>f, e, E, g, and G conversion characters apply
* to Float and Double types.
* <li>s and S conversion characters apply to String
* types.
* <li>All other reference types can be formatted
* using the s or S conversion characters only.
*</ul>
* <p>
* Most of this specification is quoted from the Unix
* man page for the sprintf utility.</p>
*
* @version 1
* Release 1: Initial release.
* Release 2: Asterisk field widths and precisions
* %n$ and *m$
* changes:
* 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 && cPos<fmtArg.length()) {
for (ePos=cPos+1; ePos<fmtArg.length();
ePos++) {
char c=0;
c = fmtArg.charAt(ePos);
if (c == 'i') break;
if (c == 'd') break;
if (c == 'f') break;
if (c == 'g') break;
if (c == 'G') break;
if (c == 'o') break;
if (c == 'x') break;
if (c == 'X') break;
if (c == 'e') break;
if (c == 'E') break;
if (c == 'c') break;
if (c == 's') break;
if (c == '%') break;
}
ePos=Math.min(ePos+1,fmtArg.length());
sFmt = new ConversionSpecification(
fmtArg.substring(cPos,ePos));
vFmt.addElement(sFmt);
unCS = this.nonControl(fmtArg,ePos);
if (unCS!=null) {
sFmt = new ConversionSpecification();
sFmt.setLiteral(unCS);
vFmt.addElement(sFmt);
}
}
}
/**
* Return a substring starting at
* <code>start</code> and ending at either the end
* of the String <code>s</code>, 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
* <code>s</code> 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();
}
/**
*<p>
* 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.
*<p>
* 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
*<ol>
*<li>is not escaped protected by a matching % or
* is not an escape % character,
*<li>is not at the end of the format string, and
*<li>precedes a sequence of characters that parses
* as a valid control string.
*</ol>
*<p>
* A control string takes the form:
*<pre> % ['-+ #0]* [0..9]* { . [0..9]* }+
* { [hlL] }+ [idfgGoxXeEcs]
*</pre>
*<p>
* 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 (i<fmt.length()) {
if (fmt.charAt(i)=='\\') {
i++;
if (i<fmt.length()) {
char c=fmt.charAt(i);
switch(c) {
case 'a':
sb.append((char)0x07);
break;
case 'b':
sb.append('\b');
break;
case 'f':
sb.append('\f');
break;
case 'n':
sb.append(System.getProperty("line.separator"));
break;
case 'r':
sb.append('\r');
break;
case 't':
sb.append('\t');
break;
case 'v':
sb.append((char)0x0b);
break;
case '\\':
sb.append('\\');
break;
}
i++;
}
else
sb.append('\\');
}
else
i++;
}
return fmt;
}
/**
* Get the conversion character that tells what
* type of control character this instance has.
*
* @return the conversion character.
*/
char getConversionCharacter() {
return conversionCharacter;
}
/**
* Check whether the specifier has a variable
* field width that is going to be set by an
* argument.
* @return <code>true</code> if the conversion
* uses an * field width; otherwise
* <code>false</code>.
*/
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 <code>true</code> if the conversion
* uses an * precision; otherwise
* <code>false</code>.
*/
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; ie<sx.length(); ie++)
if (sx.charAt(ie)!='0') break;
if (ie<sx.length())
expon=-Integer.parseInt(sx.substring(ie));
}
else {
if (sx.charAt(ie)=='+') ++ie;
for (; ie<sx.length(); ie++)
if (sx.charAt(ie)!='0') break;
if (ie<sx.length())
expon=Integer.parseInt(sx.substring(ie));
}
}
int p;
if (precisionSet) p = precision;
else p = defaultDigits-1;
char[] ca1 = sx.toCharArray();
char[] ca2 = new char[n1In+n2In];
char[] ca3,ca4,ca5;
for (j=0; j<n1In; j++)
ca2[j] = ca1[j];
i = j+1;
for (k=0; k<n2In; j++,i++,k++)
ca2[j] = ca1[i];
if (n1In+expon<=0) {
ca3 = new char[-expon+n2In];
for (j=0,k=0; k<(-n1In-expon); k++,j++)
ca3[j]='0';
for (i=0; i<(n1In+n2In); i++,j++)
ca3[j]=ca2[i];
}
else
ca3 = ca2;
boolean carry=false;
if (p<-expon+n2In) {
if (expon<0) i = p;
else i = p+n1In;
carry=checkForCarry(ca3,i);
if (carry)
carry=startSymbolicCarry(ca3,i-1,0);
}
if (n1In+expon<=0) {
ca4 = new char[2+p];
if (!carry) ca4[0]='0';
else ca4[0]='1';
if(alternateForm||!precisionSet||precision!=0){
ca4[1]='.';
for(i=0,j=2;i<Math.min(p,ca3.length);i++,j++)
ca4[j]=ca3[i];
for (; j<ca4.length; j++) ca4[j]='0';
}
}
else {
if (!carry) {
if(alternateForm||!precisionSet
||precision!=0)
ca4 = new char[n1In+expon+p+1];
else
ca4 = new char[n1In+expon];
j=0;
}
else {
if(alternateForm||!precisionSet
||precision!=0)
ca4 = new char[n1In+expon+p+2];
else
ca4 = new char[n1In+expon+1];
ca4[0]='1';
j=1;
}
for (i=0; i<Math.min(n1In+expon,ca3.length); i++,j++)
ca4[j]=ca3[i];
for (; i<n1In+expon; i++,j++)
ca4[j]='0';
if(alternateForm||!precisionSet||precision!=0){
ca4[j]='.'; j++;
for (k=0; i<ca3.length && k<p; i++,j++,k++)
ca4[j]=ca3[i];
for (; j<ca4.length; j++) ca4[j]='0';
}
}
int nZeros=0;
if (!leftJustify && leadingZeros) {
int xThousands=0;
if (thousands) {
int xlead=0;
if (ca4[0]=='+'||ca4[0]=='-'||ca4[0]==' ')
xlead=1;
int xdp=xlead;
for (; xdp<ca4.length; xdp++)
if (ca4[xdp]=='.') break;
xThousands=(xdp-xlead)/3;
}
if (fieldWidthSet)
nZeros = fieldWidth-ca4.length;
if ((!minusSign&&(leadingSign||leadingSpace))||minusSign)
nZeros--;
nZeros-=xThousands;
if (nZeros<0) nZeros=0;
}
j=0;
if ((!minusSign&&(leadingSign||leadingSpace))||minusSign) {
ca5 = new char[ca4.length+nZeros+1];
j++;
}
else
ca5 = new char[ca4.length+nZeros];
if (!minusSign) {
if (leadingSign) ca5[0]='+';
if (leadingSpace) ca5[0]=' ';
}
else
ca5[0]='-';
for (i=0; i<nZeros; i++,j++)
ca5[j]='0';
for (i=0; i<ca4.length; i++,j++) ca5[j]=ca4[i];
int lead=0;
if (ca5[0]=='+'||ca5[0]=='-'||ca5[0]==' ')
lead=1;
int dp=lead;
for (; dp<ca5.length; dp++)
if (ca5[dp]=='.') break;
int nThousands=(dp-lead)/3;
// Localize the decimal point.
if (dp<ca5.length)
ca5[dp]=dfs.getDecimalSeparator();
char[] ca6 = ca5;
if (thousands && nThousands>0) {
ca6 = new char[ca5.length+nThousands+lead];
ca6[0]=ca5[0];
for (i=lead,k=lead; i<dp; i++) {
if (i>0 && (dp-i)%3==0) {
// ca6[k]=',';
ca6[k]=dfs.getGroupingSeparator();
ca6[k+1]=ca5[i];
k+=2;
}
else {
ca6[k]=ca5[i]; k++;
}
}
for (; i<ca5.length; i++,k++) {
ca6[k]=ca5[i];
}
}
return ca6;
}
/**
* An intermediate routine on the way to creating
* an f 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.
* @return the converted double value.
*/
private String fFormatString(double x) {
boolean noDigits=false;
char[] ca6,ca7;
if (Double.isInfinite(x)) {
if (x==Double.POSITIVE_INFINITY) {
if (leadingSign) ca6 = "+Inf".toCharArray();
else if (leadingSpace)
ca6 = " Inf".toCharArray();
else ca6 = "Inf".toCharArray();
}
else
ca6 = "-Inf".toCharArray();
noDigits = true;
}
else if (Double.isNaN(x)) {
if (leadingSign) ca6 = "+NaN".toCharArray();
else if (leadingSpace)
ca6 = " NaN".toCharArray();
else ca6 = "NaN".toCharArray();
noDigits = true;
}
else
ca6 = fFormatDigits(x);
ca7 = applyFloatPadding(ca6,false);
return new String(ca7);
}
/**
* For e 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 minimum number of
* digits to appear after the radix character.
* Padding is with trailing 0s.
*
* 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 char[] eFormatDigits(double x,char eChar) {
char[] ca1,ca2,ca3;
// int defaultDigits=6;
String sx,sxOut;
int i,j,k,p;
int n1In,n2In;
int expon=0;
int ePos,rPos,eSize;
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);
}
}
ePos = sx.indexOf('E');
if (ePos==-1) ePos = sx.indexOf('e');
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; ie<sx.length(); ie++)
if (sx.charAt(ie)!='0') break;
if (ie<sx.length())
expon=-Integer.parseInt(sx.substring(ie));
}
else {
if (sx.charAt(ie)=='+') ++ie;
for (; ie<sx.length(); ie++)
if (sx.charAt(ie)!='0') break;
if (ie<sx.length())
expon=Integer.parseInt(sx.substring(ie));
}
}
if (rPos!=-1) expon += rPos-1;
if (precisionSet) p = precision;
else p = defaultDigits-1;
if (rPos!=-1 && ePos!=-1)
ca1=(sx.substring(0,rPos)+
sx.substring(rPos+1,ePos)).toCharArray();
else if (rPos!=-1)
ca1 = (sx.substring(0,rPos)+
sx.substring(rPos+1)).toCharArray();
else if (ePos!=-1)
ca1 = sx.substring(0,ePos).toCharArray();
else
ca1 = sx.toCharArray();
boolean carry=false;
int i0=0;
if (ca1[0]!='0')
i0 = 0;
else
for (i0=0; i0<ca1.length; i0++)
if (ca1[i0]!='0') break;
if (i0+p<ca1.length-1) {
carry=checkForCarry(ca1,i0+p+1);
if (carry)
carry = startSymbolicCarry(ca1,i0+p,i0);
if (carry) {
ca2 = new char[i0+p+1];
ca2[i0]='1';
for (j=0; j<i0; j++) ca2[j]='0';
for (i=i0,j=i0+1; j<p+1; i++,j++)
ca2[j] = ca1[i];
expon++;
ca1 = ca2;
}
}
if (Math.abs(expon)<100 && !optionalL) eSize=4;
else eSize=5;
if (alternateForm||!precisionSet||precision!=0)
ca2 = new char[2+p+eSize];
else
ca2 = new char[1+eSize];
if (ca1[0]!='0') {
ca2[0] = ca1[0];
j=1;
}
else {
for (j=1; j<(ePos==-1?ca1.length:ePos); j++)
if (ca1[j]!='0') break;
if ((ePos!=-1 && j<ePos)||
(ePos==-1 && j<ca1.length)) {
ca2[0] = ca1[j];
expon -= j;
j++;
}
else {
ca2[0]='0';
j=2;
}
}
if (alternateForm||!precisionSet||precision!=0) {
ca2[1] = '.';
i=2;
}
else
i=1;
for (k=0; k<p && j<ca1.length; j++,i++,k++)
ca2[i] = ca1[j];
for (;i<ca2.length-eSize; i++)
ca2[i] = '0';
ca2[i++] = eChar;
if (expon<0) ca2[i++]='-';
else ca2[i++]='+';
expon = Math.abs(expon);
if (expon>=100) {
switch(expon/100) {
case 1: ca2[i]='1'; break;
case 2: ca2[i]='2'; break;
case 3: ca2[i]='3'; break;
case 4: ca2[i]='4'; break;
case 5: ca2[i]='5'; break;
case 6: ca2[i]='6'; break;
case 7: ca2[i]='7'; break;
case 8: ca2[i]='8'; break;
case 9: ca2[i]='9'; break;
}
i++;
}
switch((expon%100)/10) {
case 0: ca2[i]='0'; break;
case 1: ca2[i]='1'; break;
case 2: ca2[i]='2'; break;
case 3: ca2[i]='3'; break;
case 4: ca2[i]='4'; break;
case 5: ca2[i]='5'; break;
case 6: ca2[i]='6'; break;
case 7: ca2[i]='7'; break;
case 8: ca2[i]='8'; break;
case 9: ca2[i]='9'; break;
}
i++;
switch(expon%10) {
case 0: ca2[i]='0'; break;
case 1: ca2[i]='1'; break;
case 2: ca2[i]='2'; break;
case 3: ca2[i]='3'; break;
case 4: ca2[i]='4'; break;
case 5: ca2[i]='5'; break;
case 6: ca2[i]='6'; break;
case 7: ca2[i]='7'; break;
case 8: ca2[i]='8'; break;
case 9: ca2[i]='9'; break;
}
int nZeros=0;
if (!leftJustify && leadingZeros) {
int xThousands=0;
if (thousands) {
int xlead=0;
if (ca2[0]=='+'||ca2[0]=='-'||ca2[0]==' ')
xlead=1;
int xdp=xlead;
for (; xdp<ca2.length; xdp++)
if (ca2[xdp]=='.') break;
xThousands=(xdp-xlead)/3;
}
if (fieldWidthSet)
nZeros = fieldWidth-ca2.length;
if ((!minusSign&&(leadingSign||leadingSpace))||minusSign)
nZeros--;
nZeros-=xThousands;
if (nZeros<0) nZeros=0;
}
j=0;
if ((!minusSign&&(leadingSign || leadingSpace))||minusSign) {
ca3 = new char[ca2.length+nZeros+1];
j++;
}
else
ca3 = new char[ca2.length+nZeros];
if (!minusSign) {
if (leadingSign) ca3[0]='+';
if (leadingSpace) ca3[0]=' ';
}
else
ca3[0]='-';
for (k=0; k<nZeros; j++,k++)
ca3[j]='0';
for (i=0; i<ca2.length && j<ca3.length; i++,j++)
ca3[j]=ca2[i];
int lead=0;
if (ca3[0]=='+'||ca3[0]=='-'||ca3[0]==' ')
lead=1;
int dp=lead;
for (; dp<ca3.length; dp++)
if (ca3[dp]=='.') break;
int nThousands=dp/3;
// Localize the decimal point.
if (dp < ca3.length)
ca3[dp] = dfs.getDecimalSeparator();
char[] ca4 = ca3;
if (thousands && nThousands>0) {
ca4 = new char[ca3.length+nThousands+lead];
ca4[0]=ca3[0];
for (i=lead,k=lead; i<dp; i++) {
if (i>0 && (dp-i)%3==0) {
// ca4[k]=',';
ca4[k]=dfs.getGroupingSeparator();
ca4[k+1]=ca3[i];
k+=2;
}
else {
ca4[k]=ca3[i]; k++;
}
}
for (; i<ca3.length; i++,k++)
ca4[k]=ca3[i];
}
return ca4;
}
/**
* Check to see if the digits that are going to
* be truncated because of the precision should
* force a round in the preceding digits.
* @param ca1 the array of digits
* @param icarry the index of the first digit that
* is to be truncated from the print
* @return <code>true</code> if the truncation forces
* a round that will change the print
*/
private boolean checkForCarry(char[] ca1,int icarry) {
boolean carry=false;
if (icarry<ca1.length) {
if (ca1[icarry]=='6'||ca1[icarry]=='7'
||ca1[icarry]=='8'||ca1[icarry]=='9') carry=true;
else if (ca1[icarry]=='5') {
int ii=icarry+1;
for (;ii<ca1.length; ii++)
if (ca1[ii]!='0') break;
carry=ii<ca1.length;
if (!carry&&icarry>0) {
carry=(ca1[icarry-1]=='1'||ca1[icarry-1]=='3'
||ca1[icarry-1]=='5'||ca1[icarry-1]=='7'
||ca1[icarry-1]=='9');
}
}
}
return carry;
}
/**
* Start the symbolic carry process. The process
* is not quite finished because the symbolic
* carry may change the length of the string and
* change the exponent (in e format).
* @param cLast index of the last digit changed
* by the round
* @param cFirst index of the first digit allowed
* to be changed by this phase of the round
* @return <code>true</code> 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; i<ca4.length; i++)
ca5[i] = ca4[i];
for (j=0; j<nBlanks; j++,i++)
ca5[i] = ' ';
}
}
else if (!leadingZeros || noDigits) {
nBlanks = fieldWidth-ca4.length;
if (nBlanks > 0) {
ca5 = new char[ca4.length+nBlanks];
for (i=0; i<nBlanks; i++)
ca5[i] = ' ';
for (j=0; j<ca4.length; i++,j++)
ca5[i] = ca4[j];
}
}
else if (leadingZeros) {
nBlanks = fieldWidth-ca4.length;
if (nBlanks > 0) {
ca5 = new char[ca4.length+nBlanks];
i=0; j=0;
if (ca4[0]=='-') { ca5[0]='-'; i++; j++; }
for (int k=0; k<nBlanks; i++,k++)
ca5[i] = '0';
for (; j<ca4.length; i++,j++)
ca5[i] = ca4[j];
}
}
}
return ca5;
}
/**
* Format method for the f conversion character.
* @param x the double to format.
* @return the formatted String.
*/
private String printFFormat(double x) {
return fFormatString(x);
}
/**
* Format method for the e or E conversion
* character.
* @param x the double to format.
* @return the formatted String.
*/
private String printEFormat(double x) {
if (conversionCharacter=='e')
return eFormatString(x,'e');
else
return eFormatString(x,'E');
}
/**
* Format method for the g conversion character.
*
* For g 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 minimum number of
* digits to appear after the radix character.
* Padding is with trailing 0s.
* @param x the double to format.
* @return the formatted String.
*/
private String printGFormat(double x) {
String sx,sy,sz,ret;
int savePrecision=precision;
int i;
char[] ca4,ca5;
boolean noDigits=false;
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 {
if (!precisionSet) precision=defaultDigits;
if (precision==0) precision=1;
int ePos=-1;
if (conversionCharacter=='g') {
sx = eFormatString(x,'e').trim();
ePos=sx.indexOf('e');
}
else {
sx = eFormatString(x,'E').trim();
ePos=sx.indexOf('E');
}
i=ePos+1;
int expon=0;
if (sx.charAt(i)=='-') {
for (++i; i<sx.length(); i++)
if (sx.charAt(i)!='0') break;
if (i<sx.length())
expon=-Integer.parseInt(sx.substring(i));
}
else {
if (sx.charAt(i)=='+') ++i;
for (; i<sx.length(); i++)
if (sx.charAt(i)!='0') break;
if (i<sx.length())
expon=Integer.parseInt(sx.substring(i));
}
// Trim trailing zeros.
// If the radix character is not followed by
// a digit, trim it, too.
if (!alternateForm) {
if (expon>=-4 && expon<precision)
sy = fFormatString(x).trim();
else
sy = sx.substring(0,ePos);
i=sy.length()-1;
for (; i>=0; i--)
if (sy.charAt(i)!='0') break;
if (i>=0 && sy.charAt(i)=='.') i--;
if (i==-1) sz="0";
else if (!Character.isDigit(sy.charAt(i)))
sz=sy.substring(0,i+1)+"0";
else sz=sy.substring(0,i+1);
if (expon>=-4 && expon<precision)
ret=sz;
else
ret=sz+sx.substring(ePos);
}
else {
if (expon>=-4 && expon<precision)
ret = fFormatString(x).trim();
else
ret = sx;
}
// leading space was trimmed off during
// construction
if (leadingSpace) if (x>=0) ret = " "+ret;
ca4 = ret.toCharArray();
}
// Pad with blanks or zeros.
ca5 = applyFloatPadding(ca4,false);
precision=savePrecision;
return new String(ca5);
}
/**
* Format method for the d conversion specifer and
* short argument.
*
* For d 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. A '+' 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 minimum number of
* digits to appear. Padding is with leading 0s.
* @param x the short to format.
* @return the formatted String.
*/
private String printDFormat(short x) {
return printDFormat(Short.toString(x));
}
/**
* Format method for the d conversion character and
* long argument.
*
* For d 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. A '+' 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 minimum number of
* digits to appear. Padding is with leading 0s.
* @param x the long to format.
* @return the formatted String.
*/
private String printDFormat(long x) {
return printDFormat(Long.toString(x));
}
/**
* Format method for the d conversion character and
* int argument.
*
* For d 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. A '+' 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 minimum number of
* digits to appear. Padding is with leading 0s.
* @param x the int to format.
* @return the formatted String.
*/
private String printDFormat(int x) {
return printDFormat(Integer.toString(x));
}
/**
* Utility method for formatting using the d
* conversion character.
* @param sx the String to format, the result of
* converting a short, int, or long to a
* String.
* @return the formatted String.
*/
private String printDFormat(String sx) {
int nLeadingZeros=0;
int nBlanks=0,n=0;
int i=0,jFirst=0;
boolean neg = sx.charAt(0)=='-';
if (sx.equals("0")&&precisionSet&&precision==0)
sx="";
if (!neg) {
if (precisionSet && sx.length() < precision)
nLeadingZeros = precision-sx.length();
}
else {
if (precisionSet&&(sx.length()-1)<precision)
nLeadingZeros = precision-sx.length()+1;
}
if (nLeadingZeros<0) nLeadingZeros=0;
if (fieldWidthSet) {
nBlanks = fieldWidth-nLeadingZeros-sx.length();
if (!neg&&(leadingSign||leadingSpace))
nBlanks--;
}
if (nBlanks<0) nBlanks=0;
if (leadingSign) n++;
else if (leadingSpace) n++;
n += nBlanks;
n += nLeadingZeros;
n += sx.length();
char[] ca = new char[n];
if (leftJustify) {
if (neg) ca[i++] = '-';
else if (leadingSign) ca[i++] = '+';
else if (leadingSpace) ca[i++] = ' ';
char[] csx = sx.toCharArray();
jFirst = neg?1:0;
for (int j=0; j<nLeadingZeros; i++,j++)
ca[i]='0';
for (int j=jFirst; j<csx.length; j++,i++)
ca[i] = csx[j];
for (int j=0; j<nBlanks; i++,j++)
ca[i] = ' ';
}
else {
if (!leadingZeros) {
for (i=0; i<nBlanks; i++)
ca[i] = ' ';
if (neg) ca[i++] = '-';
else if (leadingSign) ca[i++] = '+';
else if (leadingSpace) ca[i++] = ' ';
}
else {
if (neg) ca[i++] = '-';
else if (leadingSign) ca[i++] = '+';
else if (leadingSpace) ca[i++] = ' ';
for (int j=0; j<nBlanks; j++,i++)
ca[i] = '0';
}
for (int j=0; j<nLeadingZeros; j++,i++)
ca[i] = '0';
char[] csx = sx.toCharArray();
jFirst = neg?1:0;
for (int j=jFirst; j<csx.length; j++,i++)
ca[i] = csx[j];
}
return new String(ca);
}
/**
* Format method for the x conversion character and
* short argument.
*
* For x 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. The '#' flag character means to lead with
* '0x'.
*
* 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 minimum number of
* digits to appear. Padding is with leading 0s.
* @param x the short to format.
* @return the formatted String.
*/
private String printXFormat(short x) {
String sx=null;
if (x == Short.MIN_VALUE)
sx = "8000";
else if (x < 0) {
String t;
if (x==Short.MIN_VALUE)
t = "0";
else {
t = Integer.toString(
(~(-x-1))^Short.MIN_VALUE,16);
if (t.charAt(0)=='F'||t.charAt(0)=='f')
t = t.substring(16,32);
}
switch (t.length()) {
case 1:
sx = "800"+t;
break;
case 2:
sx = "80"+t;
break;
case 3:
sx = "8"+t;
break;
case 4:
switch (t.charAt(0)) {
case '1':
sx = "9"+t.substring(1,4);
break;
case '2':
sx = "a"+t.substring(1,4);
break;
case '3':
sx = "b"+t.substring(1,4);
break;
case '4':
sx = "c"+t.substring(1,4);
break;
case '5':
sx = "d"+t.substring(1,4);
break;
case '6':
sx = "e"+t.substring(1,4);
break;
case '7':
sx = "f"+t.substring(1,4);
break;
}
break;
}
}
else
sx = Integer.toString((int)x,16);
return printXFormat(sx);
}
/**
* Format method for the x conversion character and
* long argument.
*
* For x 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. The '#' flag character means to lead with
* '0x'.
*
* 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 minimum number of
* digits to appear. Padding is with leading 0s.
* @param x the long to format.
* @return the formatted String.
*/
private String printXFormat(long x) {
String sx=null;
if (x == Long.MIN_VALUE)
sx = "8000000000000000";
else if (x < 0) {
String t = Long.toString(
(~(-x-1))^Long.MIN_VALUE,16);
switch (t.length()) {
case 1:
sx = "800000000000000"+t;
break;
case 2:
sx = "80000000000000"+t;
break;
case 3:
sx = "8000000000000"+t;
break;
case 4:
sx = "800000000000"+t;
break;
case 5:
sx = "80000000000"+t;
break;
case 6:
sx = "8000000000"+t;
break;
case 7:
sx = "800000000"+t;
break;
case 8:
sx = "80000000"+t;
break;
case 9:
sx = "8000000"+t;
break;
case 10:
sx = "800000"+t;
break;
case 11:
sx = "80000"+t;
break;
case 12:
sx = "8000"+t;
break;
case 13:
sx = "800"+t;
break;
case 14:
sx = "80"+t;
break;
case 15:
sx = "8"+t;
break;
case 16:
switch (t.charAt(0)) {
case '1':
sx = "9"+t.substring(1,16);
break;
case '2':
sx = "a"+t.substring(1,16);
break;
case '3':
sx = "b"+t.substring(1,16);
break;
case '4':
sx = "c"+t.substring(1,16);
break;
case '5':
sx = "d"+t.substring(1,16);
break;
case '6':
sx = "e"+t.substring(1,16);
break;
case '7':
sx = "f"+t.substring(1,16);
break;
}
break;
}
}
else
sx = Long.toString(x,16);
return printXFormat(sx);
}
/**
* Format method for the x conversion character and
* int argument.
*
* For x 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. The '#' flag character means to lead with
* '0x'.
*
* 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 minimum number of
* digits to appear. Padding is with leading 0s.
* @param x the int to format.
* @return the formatted String.
*/
private String printXFormat(int x) {
String sx=null;
if (x == Integer.MIN_VALUE)
sx = "80000000";
else if (x < 0) {
String t = Integer.toString(
(~(-x-1))^Integer.MIN_VALUE,16);
switch (t.length()) {
case 1:
sx = "8000000"+t;
break;
case 2:
sx = "800000"+t;
break;
case 3:
sx = "80000"+t;
break;
case 4:
sx = "8000"+t;
break;
case 5:
sx = "800"+t;
break;
case 6:
sx = "80"+t;
break;
case 7:
sx = "8"+t;
break;
case 8:
switch (t.charAt(0)) {
case '1':
sx = "9"+t.substring(1,8);
break;
case '2':
sx = "a"+t.substring(1,8);
break;
case '3':
sx = "b"+t.substring(1,8);
break;
case '4':
sx = "c"+t.substring(1,8);
break;
case '5':
sx = "d"+t.substring(1,8);
break;
case '6':
sx = "e"+t.substring(1,8);
break;
case '7':
sx = "f"+t.substring(1,8);
break;
}
break;
}
}
else
sx = Integer.toString(x,16);
return printXFormat(sx);
}
/**
* Utility method for formatting using the x
* conversion character.
* @param sx the String to format, the result of
* converting a short, int, or long to a
* String.
* @return the formatted String.
*/
private String printXFormat(String sx) {
int nLeadingZeros = 0;
int nBlanks = 0;
if (sx.equals("0")&&precisionSet&&precision==0)
sx="";
if (precisionSet)
nLeadingZeros = precision-sx.length();
if (nLeadingZeros<0) nLeadingZeros=0;
if (fieldWidthSet) {
nBlanks = fieldWidth-nLeadingZeros-sx.length();
if (alternateForm) nBlanks = nBlanks - 2;
}
if (nBlanks<0) nBlanks=0;
int n=0;
if (alternateForm) n+=2;
n += nLeadingZeros;
n += sx.length();
n += nBlanks;
char[] ca = new char[n];
int i=0;
if (leftJustify) {
if (alternateForm) {
ca[i++]='0'; ca[i++]='x';
}
for (int j=0; j<nLeadingZeros; j++,i++)
ca[i]='0';
char[] csx = sx.toCharArray();
for (int j=0; j<csx.length; j++,i++)
ca[i] = csx[j];
for (int j=0; j<nBlanks; j++,i++)
ca[i] = ' ';
}
else {
if (!leadingZeros)
for (int j=0; j<nBlanks; j++,i++)
ca[i] = ' ';
if (alternateForm) {
ca[i++]='0'; ca[i++]='x';
}
if (leadingZeros)
for (int j=0; j<nBlanks; j++,i++)
ca[i] = '0';
for (int j=0; j<nLeadingZeros; j++,i++)
ca[i]='0';
char[] csx = sx.toCharArray();
for (int j=0; j<csx.length; j++,i++)
ca[i] = csx[j];
}
String caReturn=new String(ca);
if (conversionCharacter=='X')
caReturn = caReturn.toUpperCase();
return caReturn;
}
/**
* Format method for the o conversion character and
* short argument.
*
* For o 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. The '#' flag character means that the
* output begins with a leading 0 and the precision
* is increased by 1.
*
* 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 minimum number of
* digits to appear. Padding is with leading 0s.
* @param x the short to format.
* @return the formatted String.
*/
private String printOFormat(short x) {
String sx=null;
if (x == Short.MIN_VALUE)
sx = "100000";
else if (x < 0) {
String t = Integer.toString(
(~(-x-1))^Short.MIN_VALUE,8);
switch (t.length()) {
case 1:
sx = "10000"+t;
break;
case 2:
sx = "1000"+t;
break;
case 3:
sx = "100"+t;
break;
case 4:
sx = "10"+t;
break;
case 5:
sx = "1"+t;
break;
}
}
else
sx = Integer.toString((int)x,8);
return printOFormat(sx);
}
/**
* Format method for the o conversion character and
* long argument.
*
* For o 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. The '#' flag character means that the
* output begins with a leading 0 and the precision
* is increased by 1.
*
* 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 minimum number of
* digits to appear. Padding is with leading 0s.
* @param x the long to format.
* @return the formatted String.
*/
private String printOFormat(long x) {
String sx=null;
if (x == Long.MIN_VALUE)
sx = "1000000000000000000000";
else if (x < 0) {
String t = Long.toString(
(~(-x-1))^Long.MIN_VALUE,8);
switch (t.length()) {
case 1:
sx = "100000000000000000000"+t;
break;
case 2:
sx = "10000000000000000000"+t;
break;
case 3:
sx = "1000000000000000000"+t;
break;
case 4:
sx = "100000000000000000"+t;
break;
case 5:
sx = "10000000000000000"+t;
break;
case 6:
sx = "1000000000000000"+t;
break;
case 7:
sx = "100000000000000"+t;
break;
case 8:
sx = "10000000000000"+t;
break;
case 9:
sx = "1000000000000"+t;
break;
case 10:
sx = "100000000000"+t;
break;
case 11:
sx = "10000000000"+t;
break;
case 12:
sx = "1000000000"+t;
break;
case 13:
sx = "100000000"+t;
break;
case 14:
sx = "10000000"+t;
break;
case 15:
sx = "1000000"+t;
break;
case 16:
sx = "100000"+t;
break;
case 17:
sx = "10000"+t;
break;
case 18:
sx = "1000"+t;
break;
case 19:
sx = "100"+t;
break;
case 20:
sx = "10"+t;
break;
case 21:
sx = "1"+t;
break;
}
}
else
sx = Long.toString(x,8);
return printOFormat(sx);
}
/**
* Format method for the o conversion character and
* int argument.
*
* For o 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. The '#' flag character means that the
* output begins with a leading 0 and the precision
* is increased by 1.
*
* 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 minimum number of
* digits to appear. Padding is with leading 0s.
* @param x the int to format.
* @return the formatted String.
*/
private String printOFormat(int x) {
String sx=null;
if (x == Integer.MIN_VALUE)
sx = "20000000000";
else if (x < 0) {
String t = Integer.toString(
(~(-x-1))^Integer.MIN_VALUE,8);
switch (t.length()) {
case 1:
sx = "2000000000"+t;
break;
case 2:
sx = "200000000"+t;
break;
case 3:
sx = "20000000"+t;
break;
case 4:
sx = "2000000"+t;
break;
case 5:
sx = "200000"+t;
break;
case 6:
sx = "20000"+t;
break;
case 7:
sx = "2000"+t;
break;
case 8:
sx = "200"+t;
break;
case 9:
sx = "20"+t;
break;
case 10:
sx = "2"+t;
break;
case 11:
sx = "3"+t.substring(1);
break;
}
}
else
sx = Integer.toString(x,8);
return printOFormat(sx);
}
/**
* Utility method for formatting using the o
* conversion character.
* @param sx the String to format, the result of
* converting a short, int, or long to a
* String.
* @return the formatted String.
*/
private String printOFormat(String sx) {
int nLeadingZeros = 0;
int nBlanks = 0;
if (sx.equals("0")&&precisionSet&&precision==0)
sx="";
if (precisionSet)
nLeadingZeros = precision-sx.length();
if (alternateForm) nLeadingZeros++;
if (nLeadingZeros<0) nLeadingZeros=0;
if (fieldWidthSet)
nBlanks = fieldWidth-nLeadingZeros-sx.length();
if (nBlanks<0) nBlanks=0;
int n=nLeadingZeros+sx.length()+nBlanks;
char[] ca = new char[n];
int i;
if (leftJustify) {
for (i=0; i<nLeadingZeros; i++) ca[i]='0';
char[] csx = sx.toCharArray();
for (int j=0; j<csx.length; j++,i++)
ca[i] = csx[j];
for (int j=0; j<nBlanks; j++,i++) ca[i] = ' ';
}
else {
if (leadingZeros)
for (i=0; i<nBlanks; i++) ca[i]='0';
else
for (i=0; i<nBlanks; i++) ca[i]=' ';
for (int j=0; j<nLeadingZeros; j++,i++)
ca[i]='0';
char[] csx = sx.toCharArray();
for (int j=0; j<csx.length; j++,i++)
ca[i] = csx[j];
}
return new String(ca);
}
/**
* Format method for the c conversion character and
* char argument.
*
* The only flag character that affects c format is
* the '-', meaning that the output should be left
* justified within the field. The default is to
* pad with blanks on the left.
*
* The field width is treated as the minimum number
* of characters to be printed. Padding is with
* blanks by default. The default width is 1.
*
* The precision, if set, is ignored.
* @param x the char to format.
* @return the formatted String.
*/
private String printCFormat(char x) {
int nPrint = 1;
int width = fieldWidth;
if (!fieldWidthSet) width = nPrint;
char[] ca = new char[width];
int i=0;
if (leftJustify) {
ca[0] = x;
for (i=1; i<=width-nPrint; i++) ca[i]=' ';
}
else {
for (i=0; i<width-nPrint; i++) ca[i]=' ';
ca[i] = x;
}
return new String(ca);
}
/**
* Format method for the s conversion character and
* String argument.
*
* The only flag character that affects s format is
* the '-', meaning that the output should be left
* justified within the field. The default is to
* pad with blanks on the left.
*
* The field width is treated as the minimum number
* of characters to be printed. The default is the
* smaller of the number of characters in the the
* input and the precision. Padding is with blanks
* by default.
*
* The precision, if set, specifies the maximum
* number of characters to be printed from the
* string. A null digit string is treated
* as a 0. The default is not to set a maximum
* number of characters to be printed.
* @param x the String to format.
* @return the formatted String.
*/
private String printSFormat(String x) {
int nPrint = x.length();
int width = fieldWidth;
if (precisionSet && nPrint>precision)
nPrint=precision;
if (!fieldWidthSet) width = nPrint;
int n=0;
if (width>nPrint) n+=width-nPrint;
if (nPrint>=x.length()) n+= x.length();
else n+= nPrint;
char[] ca = new char[n];
int i=0;
if (leftJustify) {
if (nPrint>=x.length()) {
char[] csx = x.toCharArray();
for (i=0; i<x.length(); i++) ca[i]=csx[i];
}
else {
char[] csx =
x.substring(0,nPrint).toCharArray();
for (i=0; i<nPrint; i++) ca[i]=csx[i];
}
for (int j=0; j<width-nPrint; j++,i++)
ca[i]=' ';
}
else {
for (i=0; i<width-nPrint; i++) ca[i]=' ';
if (nPrint>=x.length()) {
char[] csx = x.toCharArray();
for (int j=0; j<x.length(); i++,j++)
ca[i]=csx[j];
}
else {
char[] csx =
x.substring(0,nPrint).toCharArray();
for (int j=0; j<nPrint; i++,j++)
ca[i]=csx[j];
}
}
return new String(ca);
}
/**
* Check for a conversion character. If it is
* there, store it.
* @param x the String to format.
* @return <code>true</code> if the conversion
* character is there, and
* <code>false</code> 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<fmt.length()&&fmt.charAt(pos)=='.') {
pos++;
if ((pos < fmt.length())
&& (fmt.charAt(pos)=='*')) {
pos++;
if (!setPrecisionArgPosition()) {
variablePrecision = true;
precisionSet = true;
}
return;
}
else {
while (pos < fmt.length()) {
char c = fmt.charAt(pos);
if (Character.isDigit(c)) pos++;
else break;
}
if (pos > firstPos+1) {
String sz = fmt.substring(firstPos+1,pos);
precision = Integer.parseInt(sz);
precisionSet = true;
}
}
}
}
/**
* Set the field width.
*/
private void setFieldWidth() {
int firstPos = pos;
fieldWidth = 0;
fieldWidthSet = false;
if ((pos < fmt.length())
&& (fmt.charAt(pos)=='*')) {
pos++;
if (!setFieldWidthArgPosition()) {
variableFieldWidth = true;
fieldWidthSet = true;
}
}
else {
while (pos < fmt.length()) {
char c = fmt.charAt(pos);
if (Character.isDigit(c)) pos++;
else break;
}
if (firstPos<pos && firstPos < fmt.length()) {
String sz = fmt.substring(firstPos,pos);
fieldWidth = Integer.parseInt(sz);
fieldWidthSet = true;
}
}
}
/**
* Store the digits <code>n</code> in %n$ forms.
*/
private void setArgPosition() {
int xPos;
for (xPos=pos; xPos<fmt.length(); xPos++) {
if (!Character.isDigit(fmt.charAt(xPos)))
break;
}
if (xPos>pos && xPos<fmt.length()) {
if (fmt.charAt(xPos)=='$') {
positionalSpecification = true;
argumentPosition=
Integer.parseInt(fmt.substring(pos,xPos));
pos=xPos+1;
}
}
}
/**
* Store the digits <code>n</code> in *n$ forms.
*/
private boolean setFieldWidthArgPosition() {
boolean ret=false;
int xPos;
for (xPos=pos; xPos<fmt.length(); xPos++) {
if (!Character.isDigit(fmt.charAt(xPos)))
break;
}
if (xPos>pos && xPos<fmt.length()) {
if (fmt.charAt(xPos)=='$') {
positionalFieldWidth = true;
argumentPositionForFieldWidth=
Integer.parseInt(fmt.substring(pos,xPos));
pos=xPos+1;
ret=true;
}
}
return ret;
}
/**
* Store the digits <code>n</code> in *n$ forms.
*/
private boolean setPrecisionArgPosition() {
boolean ret=false;
int xPos;
for (xPos=pos; xPos<fmt.length(); xPos++) {
if (!Character.isDigit(fmt.charAt(xPos)))
break;
}
if (xPos>pos && xPos<fmt.length()) {
if (fmt.charAt(xPos)=='$') {
positionalPrecision = true;
argumentPositionForPrecision=
Integer.parseInt(fmt.substring(pos,xPos));
pos=xPos+1;
ret=true;
}
}
return ret;
}
boolean isPositionalSpecification() {
return positionalSpecification;
}
int getArgumentPosition() { return argumentPosition; }
boolean isPositionalFieldWidth() {
return positionalFieldWidth;
}
int getArgumentPositionForFieldWidth() {
return argumentPositionForFieldWidth;
}
boolean isPositionalPrecision() {
return positionalPrecision;
}
int getArgumentPositionForPrecision() {
return argumentPositionForPrecision;
}
/**
* Set flag characters, one of '-+#0 or a space.
*/
private void setFlagCharacters() {
/* '-+ #0 */
thousands = false;
leftJustify = false;
leadingSign = false;
leadingSpace = false;
alternateForm = false;
leadingZeros = false;
for ( ; pos < fmt.length(); pos++) {
char c = fmt.charAt(pos);
if (c == '\'') thousands = true;
else if (c == '-') {
leftJustify = true;
leadingZeros = false;
}
else if (c == '+') {
leadingSign = true;
leadingSpace = false;
}
else if (c == ' ') {
if (!leadingSign) leadingSpace = true;
}
else if (c == '#') alternateForm = true;
else if (c == '0') {
if (!leftJustify) leadingZeros = true;
}
else break;
}
}
/**
* The integer portion of the result of a decimal
* conversion (i, d, u, f, g, or G) will be
* formatted with thousands' grouping characters.
* For other conversions the flag is ignored.
*/
private boolean thousands = false;
/**
* The result of the conversion will be
* left-justified within the field.
*/
private boolean leftJustify = false;
/**
* The result of a signed conversion will always
* begin with a sign (+ or -).
*/
private boolean leadingSign = false;
/**
* Flag indicating that left padding with spaces is
* specified.
*/
private boolean leadingSpace = false;
/**
* For an o conversion, increase the precision to
* force the first digit of the result to be a
* zero. For x (or X) conversions, a non-zero
* result will have 0x (or 0X) prepended to it.
* For e, E, f, g, or G conversions, the result
* will always contain a radix character, even if
* no digits follow the point. For g and G
* conversions, trailing zeros will not be removed
* from the result.
*/
private boolean alternateForm = false;
/**
* Flag indicating that left padding with zeroes is
* specified.
*/
private boolean leadingZeros = false;
/**
* Flag indicating that the field width is *.
*/
private boolean variableFieldWidth = false;
/**
* If the converted value has fewer bytes than the
* field width, it will be padded with spaces or
* zeroes.
*/
private int fieldWidth = 0;
/**
* Flag indicating whether or not the field width
* has been set.
*/
private boolean fieldWidthSet = false;
/**
* The minimum number of digits to appear for the
* d, i, o, u, x, or X conversions. 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. The maximum number of bytes to be
* printed from a string in s and S conversions.
*/
private int precision = 0;
/** Default precision. */
private final static int defaultDigits=6;
/**
* Flag indicating that the precision is *.
*/
private boolean variablePrecision = false;
/**
* Flag indicating whether or not the precision has
* been set.
*/
private boolean precisionSet = false;
/*
*/
private boolean positionalSpecification=false;
private int argumentPosition=0;
private boolean positionalFieldWidth=false;
private int argumentPositionForFieldWidth=0;
private boolean positionalPrecision=false;
private int argumentPositionForPrecision=0;
/**
* Flag specifying that a following d, i, o, u, x,
* or X conversion character applies to a type
* short int.
*/
private boolean optionalh = false;
/**
* Flag specifying that a following d, i, o, u, x,
* or X conversion character applies to a type lont
* int argument.
*/
private boolean optionall = false;
/**
* Flag specifying that a following e, E, f, g, or
* G conversion character applies to a type double
* argument. This is a noop in Java.
*/
private boolean optionalL = false;
/** Control string type. */
private char conversionCharacter = '\0';
/**
* Position within the control string. Used by
* the constructor.
*/
private int pos = 0;
/** Literal or control format string. */
private String fmt;
}
/** Vector of control strings and format literals. */
private Vector vFmt = new Vector();
/** Character position. Used by the constructor. */
private int cPos=0;
/** Character position. Used by the constructor. */
private DecimalFormatSymbols dfs=null;
}
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