X-Git-Url: http://source.jalview.org/gitweb/?a=blobdiff_plain;ds=sidebyside;f=src%2Fjalview%2Futil%2FFormat.java;h=46abdb95ab2648f0aa75da6aa1a8fea1d94ff6ea;hb=506d60f0e188723ddc91c26824b41ac7034df3fe;hp=826adf699bdca73cd0f342fdc05a5097436d46cd;hpb=fba030f6eaadbcecd149589009b2bc669d46b009;p=jalview.git
diff --git a/src/jalview/util/Format.java b/src/jalview/util/Format.java
index 826adf6..46abdb9 100755
--- a/src/jalview/util/Format.java
+++ b/src/jalview/util/Format.java
@@ -1,631 +1,942 @@
-/*
- * Cay S. Horstmann & Gary Cornell, Core Java
- * Published By Sun Microsystems Press/Prentice-Hall
- * Copyright (C) 1997 Sun Microsystems Inc.
- * All Rights Reserved.
- *
- * Permission to use, copy, modify, and distribute this
- * software and its documentation for NON-COMMERCIAL purposes
- * and without fee is hereby granted provided that this
- * copyright notice appears in all copies.
- *
- * THE AUTHORS AND PUBLISHER MAKE NO REPRESENTATIONS OR
- * WARRANTIES ABOUT THE SUITABILITY OF THE SOFTWARE, EITHER
- * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A
- * PARTICULAR PURPOSE, OR NON-INFRINGEMENT. THE AUTHORS
- * AND PUBLISHER SHALL NOT BE LIABLE FOR ANY DAMAGES SUFFERED
- * BY LICENSEE AS A RESULT OF USING, MODIFYING OR DISTRIBUTING
- * THIS SOFTWARE OR ITS DERIVATIVES.
- */
-
-/**
- * A class for formatting numbers that follows printf conventions.
- * Also implements C-like atoi and atof functions
- * @version 1.03 25 Oct 1997
- * @author Cay Horstmann
- */
-
-package jalview.util;
-
-import java.io.*;
-
-public class Format {
- /**
- * Formats the number following printf conventions.
- * Main limitation: Can only handle one format parameter at a time
- * Use multiple Format objects to format more than one number
- * @param s the format string following printf conventions
- * The string has a prefix, a format code and a suffix. The prefix and suffix
- * become part of the formatted output. The format code directs the
- * formatting of the (single) parameter to be formatted. The code has the
- * following structure
- *
- * - a % (required)
- *
- a modifier (optional)
- *
- * - +
- forces display of + for positive numbers
- *
- 0
- show leading zeroes
- *
- -
- align left in the field
- *
- space
- prepend a space in front of positive numbers
- *
- #
- use "alternate" format. Add 0 or 0x for octal or hexadecimal numbers. Don't suppress trailing zeroes in general floating point format.
- *
- * - an integer denoting field width (optional)
- *
- a period followed by an integer denoting precision (optional)
- *
- a format descriptor (required)
- *
- * - f
- floating point number in fixed format
- *
- e, E
- floating point number in exponential notation (scientific format). The E format results in an uppercase E for the exponent (1.14130E+003), the e format in a lowercase e.
- *
- g, G
- floating point number in general format (fixed format for small numbers, exponential format for large numbers). Trailing zeroes are suppressed. The G format results in an uppercase E for the exponent (if any), the g format in a lowercase e.
- *
- d, i
- integer in decimal
- *
- x
- integer in hexadecimal
- *
- o
- integer in octal
- *
- s
- string
- *
- c
- character
- *
- *
- * @exception IllegalArgumentException if bad format
- *
- */
-
- public static String getHexString(java.awt.Color color)
- {
- String r, g, b;
- r = Integer.toHexString(color.getRed());
- if (r.length() < 2)
- r = "0" + r;
- g = Integer.toHexString(color.getGreen());
- if (g.length() < 2)
- g = "0" + g;
- b = Integer.toHexString(color.getBlue());
- if (b.length() < 2)
- b = "0" + b;
-
- return r+g+b;
- }
-
-
- public Format(String s) {
- width = 0;
- precision = -1;
- pre = "";
- post = "";
- leading_zeroes = false;
- show_plus = false;
- alternate = false;
- show_space = false;
- left_align = false;
- fmt = ' ';
-
- int state = 0;
- int length = s.length();
- int parse_state = 0;
- // 0 = prefix, 1 = flags, 2 = width, 3 = precision,
- // 4 = format, 5 = end
- int i = 0;
-
- while (parse_state == 0) {
- if (i >= length)
- parse_state = 5;
- else if (s.charAt(i) == '%') {
- if (i < length - 1) {
- if (s.charAt(i + 1) == '%') {
- pre = pre + '%';
- i++;
- } else
- parse_state = 1;
- } else
- throw new java.lang.IllegalArgumentException();
- } else
- pre = pre + s.charAt(i);
- i++;
- }
- while (parse_state == 1) {
- if (i >= length)
- parse_state = 5;
- else if (s.charAt(i) == ' ')
- show_space = true;
- else if (s.charAt(i) == '-')
- left_align = true;
- else if (s.charAt(i) == '+')
- show_plus = true;
- else if (s.charAt(i) == '0')
- leading_zeroes = true;
- else if (s.charAt(i) == '#')
- alternate = true;
- else {
- parse_state = 2;
- i--;
- }
- i++;
- }
- while (parse_state == 2) {
- if (i >= length)
- parse_state = 5;
- else if ('0' <= s.charAt(i) && s.charAt(i) <= '9') {
- width = width * 10 + s.charAt(i) - '0';
- i++;
- } else if (s.charAt(i) == '.') {
- parse_state = 3;
- precision = 0;
- i++;
- } else
- parse_state = 4;
- }
- while (parse_state == 3) {
- if (i >= length)
- parse_state = 5;
- else if ('0' <= s.charAt(i) && s.charAt(i) <= '9') {
- precision = precision * 10 + s.charAt(i) - '0';
- i++;
- } else
- parse_state = 4;
- }
- if (parse_state == 4) {
- if (i >= length)
- parse_state = 5;
- else
- fmt = s.charAt(i);
- i++;
- }
- if (i < length)
- post = s.substring(i, length);
- }
-
- /**
- * prints a formatted number following printf conventions
- * @param s a PrintStream
- * @param fmt the format string
- * @param x the double to print
- */
-
- public static void print(java.io.PrintStream s, String fmt, double x) {
- s.print(new Format(fmt).form(x));
- }
-
- /**
- * prints a formatted number following printf conventions
- * @param s a PrintStream
- * @param fmt the format string
- * @param x the long to print
- */
- public static void print(java.io.PrintStream s, String fmt, long x) {
- s.print(new Format(fmt).form(x));
- }
-
- /**
- * prints a formatted number following printf conventions
- * @param s a PrintStream
- * @param fmt the format string
- * @param x the character to
- */
-
- public static void print(java.io.PrintStream s, String fmt, char x) {
- s.print(new Format(fmt).form(x));
- }
-
- /**
- * prints a formatted number following printf conventions
- * @param s a PrintStream, fmt the format string
- * @param x a string that represents the digits to print
- */
-
- public static void print(java.io.PrintStream s, String fmt, String x) {
- s.print(new Format(fmt).form(x));
- }
-
- /**
- * Converts a string of digits (decimal, octal or hex) to an integer
- * @param s a string
- * @return the numeric value of the prefix of s representing a base 10 integer
- */
-
- public static int atoi(String s) {
- return (int)atol(s);
- }
-
- /**
- * Converts a string of digits (decimal, octal or hex) to a long integer
- * @param s a string
- * @return the numeric value of the prefix of s representing a base 10 integer
- */
-
- public static long atol(String s) {
- int i = 0;
-
- while (i < s.length() && Character.isWhitespace(s.charAt(i)))
- i++;
- if (i < s.length() && s.charAt(i) == '0') {
- if (i + 1 < s.length() && (s.charAt(i + 1) == 'x' || s.charAt(i + 1) == 'X'))
- return parseLong(s.substring(i + 2), 16);
- else
- return parseLong(s, 8);
- } else
- return parseLong(s, 10);
- }
-
- private static long parseLong(String s, int base) {
- int i = 0;
- int sign = 1;
- long r = 0;
-
- while (i < s.length() && Character.isWhitespace(s.charAt(i)))
- i++;
- if (i < s.length() && s.charAt(i) == '-') {
- sign = -1;
- i++;
- } else if (i < s.length() && s.charAt(i) == '+') {
- i++;
- }
- while (i < s.length()) {
- char ch = s.charAt(i);
- if ('0' <= ch && ch < '0' + base)
- r = r * base + ch - '0';
- else if ('A' <= ch && ch < 'A' + base - 10)
- r = r * base + ch - 'A' + 10 ;
- else if ('a' <= ch && ch < 'a' + base - 10)
- r = r * base + ch - 'a' + 10 ;
- else
- return r * sign;
- i++;
- }
- return r * sign;
- }
-
- /**
- * Converts a string of digits to an double
- * @param s a string
- */
-
- public static double atof(String s) {
- int i = 0;
- int sign = 1;
- double r = 0; // integer part
- double f = 0; // fractional part
- double p = 1; // exponent of fractional part
- int state = 0; // 0 = int part, 1 = frac part
-
- while (i < s.length() && Character.isWhitespace(s.charAt(i)))
- i++;
- if (i < s.length() && s.charAt(i) == '-') {
- sign = -1;
- i++;
- } else if (i < s.length() && s.charAt(i) == '+') {
- i++;
- }
- while (i < s.length()) {
- char ch = s.charAt(i);
- if ('0' <= ch && ch <= '9') {
- if (state == 0)
- r = r * 10 + ch - '0';
- else if (state == 1) {
- p = p / 10;
- r = r + p * (ch - '0');
- }
- } else if (ch == '.') {
- if (state == 0)
- state = 1;
- else
- return sign * r;
- } else if (ch == 'e' || ch == 'E') {
- long e = (int)parseLong(s.substring(i + 1), 10);
- return sign * r * Math.pow(10, e);
- } else
- return sign * r;
- i++;
- }
- return sign * r;
- }
-
- /**
- * Formats a double into a string (like sprintf in C)
- * @param x the number to format
- * @return the formatted string
- * @exception IllegalArgumentException if bad argument
- */
-
- public String form(double x) {
- String r;
- if (precision < 0)
- precision = 6;
- int s = 1;
- if (x < 0) {
- x = -x;
- s = -1;
- }
- if (fmt == 'f')
- r = fixed_format(x);
- else if (fmt == 'e' || fmt == 'E' || fmt == 'g' || fmt == 'G')
- r = exp_format(x);
- else
- throw new java.lang.IllegalArgumentException();
-
- return pad(sign(s, r));
- }
-
- /**
- * Formats a long integer into a string (like sprintf in C)
- * @param x the number to format
- * @return the formatted string
- */
-
- public String form(long x) {
- String r;
- int s = 0;
- if (fmt == 'd' || fmt == 'i') {
- if (x < 0) {
- r = ("" + x).substring(1);
- s = -1;
- } else {
- r = "" + x;
- s = 1;
- }
- } else if (fmt == 'o')
- r = convert(x, 3, 7, "01234567");
- else if (fmt == 'x')
- r = convert(x, 4, 15, "0123456789abcdef");
- else if (fmt == 'X')
- r = convert(x, 4, 15, "0123456789ABCDEF");
- else
- throw new java.lang.IllegalArgumentException();
-
- return pad(sign(s, r));
- }
-
- /**
- * Formats a character into a string (like sprintf in C)
- * @param x the value to format
- * @return the formatted string
- */
-
- public String form(char c) {
- if (fmt != 'c')
- throw new java.lang.IllegalArgumentException();
-
- String r = "" + c;
- return pad(r);
- }
-
- /**
- * Formats a string into a larger string (like sprintf in C)
- * @param x the value to format
- * @return the formatted string
- */
-
- public String form(String s) {
- if (fmt != 's')
- throw new java.lang.IllegalArgumentException();
- if (precision >= 0)
- s = s.substring(0, precision);
- return pad(s);
- }
-
-
- /**
- * a test stub for the format class
- */
-
- public static void main(String[] a) {
- double x = 1.23456789012;
- double y = 123;
- double z = 1.2345e30;
- double w = 1.02;
- double u = 1.234e-5;
- int d = 0xCAFE;
- Format.print(System.out, "x = |%f|\n", x);
- Format.print(System.out, "u = |%20f|\n", u);
- Format.print(System.out, "x = |% .5f|\n", x);
- Format.print(System.out, "w = |%20.5f|\n", w);
- Format.print(System.out, "x = |%020.5f|\n", x);
- Format.print(System.out, "x = |%+20.5f|\n", x);
- Format.print(System.out, "x = |%+020.5f|\n", x);
- Format.print(System.out, "x = |% 020.5f|\n", x);
- Format.print(System.out, "y = |%#+20.5f|\n", y);
- Format.print(System.out, "y = |%-+20.5f|\n", y);
- Format.print(System.out, "z = |%20.5f|\n", z);
-
- Format.print(System.out, "x = |%e|\n", x);
- Format.print(System.out, "u = |%20e|\n", u);
- Format.print(System.out, "x = |% .5e|\n", x);
- Format.print(System.out, "w = |%20.5e|\n", w);
- Format.print(System.out, "x = |%020.5e|\n", x);
- Format.print(System.out, "x = |%+20.5e|\n", x);
- Format.print(System.out, "x = |%+020.5e|\n", x);
- Format.print(System.out, "x = |% 020.5e|\n", x);
- Format.print(System.out, "y = |%#+20.5e|\n", y);
- Format.print(System.out, "y = |%-+20.5e|\n", y);
-
- Format.print(System.out, "x = |%g|\n", x);
- Format.print(System.out, "z = |%g|\n", z);
- Format.print(System.out, "w = |%g|\n", w);
- Format.print(System.out, "u = |%g|\n", u);
- Format.print(System.out, "y = |%.2g|\n", y);
- Format.print(System.out, "y = |%#.2g|\n", y);
-
- Format.print(System.out, "d = |%d|\n", d);
- Format.print(System.out, "d = |%20d|\n", d);
- Format.print(System.out, "d = |%020d|\n", d);
- Format.print(System.out, "d = |%+20d|\n", d);
- Format.print(System.out, "d = |% 020d|\n", d);
- Format.print(System.out, "d = |%-20d|\n", d);
- Format.print(System.out, "d = |%20.8d|\n", d);
- Format.print(System.out, "d = |%x|\n", d);
- Format.print(System.out, "d = |%20X|\n", d);
- Format.print(System.out, "d = |%#20x|\n", d);
- Format.print(System.out, "d = |%020X|\n", d);
- Format.print(System.out, "d = |%20.8x|\n", d);
- Format.print(System.out, "d = |%o|\n", d);
- Format.print(System.out, "d = |%020o|\n", d);
- Format.print(System.out, "d = |%#20o|\n", d);
- Format.print(System.out, "d = |%#020o|\n", d);
- Format.print(System.out, "d = |%20.12o|\n", d);
-
- Format.print(System.out, "s = |%-20s|\n", "Hello");
- Format.print(System.out, "s = |%-20c|\n", '!');
-
- // regression test to confirm fix of reported bugs
-
- Format.print(System.out, "|%i|\n", Long.MIN_VALUE);
-
- Format.print(System.out, "|%6.2e|\n", 0.0);
- Format.print(System.out, "|%6.2g|\n", 0.0);
-
- Format.print(System.out, "|%6.2f|\n", 9.99);
- Format.print(System.out, "|%6.2f|\n", 9.999);
-
- Format.print(System.out, "|%6.0f|\n", 9.999);
- }
-
- private static String repeat(char c, int n) {
- if (n <= 0)
- return "";
- StringBuffer s = new StringBuffer(n);
- for (int i = 0; i < n; i++)
- s.append(c);
- return s.toString();
- }
-
- private static String convert(long x, int n, int m, String d) {
- if (x == 0)
- return "0";
- String r = "";
- while (x != 0) {
- r = d.charAt((int)(x & m)) + r;
- x = x >>> n;
- }
- return r;
- }
-
- private String pad(String r) {
- String p = repeat(' ', width - r.length());
- if (left_align)
- return pre + r + p + post;
- else
- return pre + p + r + post;
- }
-
- private String sign(int s, String r) {
- String p = "";
- if (s < 0)
- p = "-";
- else if (s > 0) {
- if (show_plus)
- p = "+";
- else if (show_space)
- p = " ";
- } else {
- if (fmt == 'o' && alternate && r.length() > 0 && r.charAt(0) != '0')
- p = "0";
- else if (fmt == 'x' && alternate)
- p = "0x";
- else if (fmt == 'X' && alternate)
- p = "0X";
- }
- int w = 0;
- if (leading_zeroes)
- w = width;
- else if ((fmt == 'd' || fmt == 'i' || fmt == 'x' || fmt == 'X' || fmt == 'o')
- && precision > 0)
- w = precision;
-
- return p + repeat('0', w - p.length() - r.length()) + r;
- }
-
- private String fixed_format(double d) {
- boolean removeTrailing
- = (fmt == 'G' || fmt == 'g') && !alternate;
- // remove trailing zeroes and decimal point
-
- if (d > 0x7FFFFFFFFFFFFFFFL)
- return exp_format(d);
- if (precision == 0)
- return (long)(d + 0.5) + (removeTrailing ? "" : ".");
-
- long whole = (long)d;
- double fr = d - whole; // fractional part
- if (fr >= 1 || fr < 0)
- return exp_format(d);
-
- double factor = 1;
- String leading_zeroes = "";
- for (int i = 1; i <= precision && factor <= 0x7FFFFFFFFFFFFFFFL; i++) {
- factor *= 10;
- leading_zeroes = leading_zeroes + "0";
- }
- long l = (long) (factor * fr + 0.5);
- if (l >= factor) {
- l = 0;
- whole++;
- } // CSH 10-25-97
-
- String z = leading_zeroes + l;
- z = "." + z.substring(z.length() - precision, z.length());
-
- if (removeTrailing) {
- int t = z.length() - 1;
- while (t >= 0 && z.charAt(t) == '0')
- t--;
- if (t >= 0 && z.charAt(t) == '.')
- t--;
- z = z.substring(0, t + 1);
- }
-
- return whole + z;
- }
-
- private String exp_format(double d) {
- String f = "";
- int e = 0;
- double dd = d;
- double factor = 1;
- if (d != 0) {
- while (dd > 10) {
- e++;
- factor /= 10;
- dd = dd / 10;
- }
- while (dd < 1) {
- e--;
- factor *= 10;
- dd = dd * 10;
- }
- }
- if ((fmt == 'g' || fmt == 'G') && e >= -4 && e < precision)
- return fixed_format(d);
-
- d = d * factor;
- f = f + fixed_format(d);
-
- if (fmt == 'e' || fmt == 'g')
- f = f + "e";
- else
- f = f + "E";
-
- String p = "000";
- if (e >= 0) {
- f = f + "+";
- p = p + e;
- } else {
- f = f + "-";
- p = p + (-e);
- }
-
- return f + p.substring(p.length() - 3, p.length());
- }
-
- private int width;
- private int precision;
- private String pre;
- private String post;
- private boolean leading_zeroes;
- private boolean show_plus;
- private boolean alternate;
- private boolean show_space;
- private boolean left_align;
- private char fmt; // one of cdeEfgGiosxXos
-}
-
-
-
-
-
+/*
+ * Jalview - A Sequence Alignment Editor and Viewer (Version 2.4)
+ * Copyright (C) 2008 AM Waterhouse, J Procter, G Barton, M Clamp, S Searle
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * 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 for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
+ */
+/**
+ * A class for formatting numbers that follows printf conventions.
+ * Also implements C-like atoi and atof functions
+ * @version 1.03 25 Oct 1997
+ * @author Cay Horstmann
+ */
+package jalview.util;
+
+/**
+ * DOCUMENT ME!
+ *
+ * @author $author$
+ * @version $Revision$
+ */
+public class Format
+{
+ private int width;
+
+ private int precision;
+
+ private String pre;
+
+ private String post;
+
+ private boolean leading_zeroes;
+
+ private boolean show_plus;
+
+ private boolean alternate;
+
+ private boolean show_space;
+
+ private boolean left_align;
+
+ private char fmt; // one of cdeEfgGiosxXos
+
+ /**
+ * Creates a new Format object.
+ *
+ * @param s
+ * DOCUMENT ME!
+ */
+ public Format(String s)
+ {
+ width = 0;
+ precision = -1;
+ pre = "";
+ post = "";
+ leading_zeroes = false;
+ show_plus = false;
+ alternate = false;
+ show_space = false;
+ left_align = false;
+ fmt = ' ';
+
+ int length = s.length();
+ int parse_state = 0;
+
+ // 0 = prefix, 1 = flags, 2 = width, 3 = precision,
+ // 4 = format, 5 = end
+ int i = 0;
+
+ while (parse_state == 0)
+ {
+ if (i >= length)
+ {
+ parse_state = 5;
+ }
+ else if (s.charAt(i) == '%')
+ {
+ if (i < (length - 1))
+ {
+ if (s.charAt(i + 1) == '%')
+ {
+ pre = pre + '%';
+ i++;
+ }
+ else
+ {
+ parse_state = 1;
+ }
+ }
+ else
+ {
+ throw new java.lang.IllegalArgumentException();
+ }
+ }
+ else
+ {
+ pre = pre + s.charAt(i);
+ }
+
+ i++;
+ }
+
+ while (parse_state == 1)
+ {
+ if (i >= length)
+ {
+ parse_state = 5;
+ }
+ else if (s.charAt(i) == ' ')
+ {
+ show_space = true;
+ }
+ else if (s.charAt(i) == '-')
+ {
+ left_align = true;
+ }
+ else if (s.charAt(i) == '+')
+ {
+ show_plus = true;
+ }
+ else if (s.charAt(i) == '0')
+ {
+ leading_zeroes = true;
+ }
+ else if (s.charAt(i) == '#')
+ {
+ alternate = true;
+ }
+ else
+ {
+ parse_state = 2;
+ i--;
+ }
+
+ i++;
+ }
+
+ while (parse_state == 2)
+ {
+ if (i >= length)
+ {
+ parse_state = 5;
+ }
+ else if (('0' <= s.charAt(i)) && (s.charAt(i) <= '9'))
+ {
+ width = ((width * 10) + s.charAt(i)) - '0';
+ i++;
+ }
+ else if (s.charAt(i) == '.')
+ {
+ parse_state = 3;
+ precision = 0;
+ i++;
+ }
+ else
+ {
+ parse_state = 4;
+ }
+ }
+
+ while (parse_state == 3)
+ {
+ if (i >= length)
+ {
+ parse_state = 5;
+ }
+ else if (('0' <= s.charAt(i)) && (s.charAt(i) <= '9'))
+ {
+ precision = ((precision * 10) + s.charAt(i)) - '0';
+ i++;
+ }
+ else
+ {
+ parse_state = 4;
+ }
+ }
+
+ if (parse_state == 4)
+ {
+ if (i >= length)
+ {
+ parse_state = 5;
+ }
+ else
+ {
+ fmt = s.charAt(i);
+ }
+
+ i++;
+ }
+
+ if (i < length)
+ {
+ post = s.substring(i, length);
+ }
+ }
+
+ /**
+ * Formats the number following printf conventions. Main limitation: Can only
+ * handle one format parameter at a time Use multiple Format objects to format
+ * more than one number
+ *
+ * @param s
+ * the format string following printf conventions The string
+ * has a prefix, a format code and a suffix. The prefix and
+ * suffix become part of the formatted output. The format code
+ * directs the formatting of the (single) parameter to be
+ * formatted. The code has the following structure
+ *
+ * - a % (required)
+ *
- a modifier (optional)
+ *
+ * - +
+ *
- forces display of + for positive numbers
+ *
- 0
+ *
- show leading zeroes
+ *
- -
+ *
- align left in the field
+ *
- space
+ *
- prepend a space in front of positive numbers
+ *
- #
+ *
- use "alternate" format. Add 0 or 0x for octal or
+ * hexadecimal numbers. Don't suppress trailing zeroes in
+ * general floating point format.
+ *
+ * - an integer denoting field width (optional)
+ *
- a period followed by an integer denoting precision
+ * (optional)
+ *
- a format descriptor (required)
+ *
+ * - f
+ *
- floating point number in fixed format
+ *
- e, E
+ *
- floating point number in exponential notation
+ * (scientific format). The E format results in an uppercase E
+ * for the exponent (1.14130E+003), the e format in a lowercase
+ * e.
+ *
- g, G
+ *
- floating point number in general format (fixed format
+ * for small numbers, exponential format for large numbers).
+ * Trailing zeroes are suppressed. The G format results in an
+ * uppercase E for the exponent (if any), the g format in a
+ * lowercase e.
+ *
- d, i
+ *
- integer in decimal
+ *
- x
+ *
- integer in hexadecimal
+ *
- o
+ *
- integer in octal
+ *
- s
+ *
- string
+ *
- c
+ *
- character
+ *
+ *
+ * @exception IllegalArgumentException
+ * if bad format
+ *
+ */
+ public static String getHexString(java.awt.Color color)
+ {
+ String r;
+ String g;
+ String b;
+ r = Integer.toHexString(color.getRed());
+
+ if (r.length() < 2)
+ {
+ r = "0" + r;
+ }
+
+ g = Integer.toHexString(color.getGreen());
+
+ if (g.length() < 2)
+ {
+ g = "0" + g;
+ }
+
+ b = Integer.toHexString(color.getBlue());
+
+ if (b.length() < 2)
+ {
+ b = "0" + b;
+ }
+
+ return r + g + b;
+ }
+
+ /**
+ * prints a formatted number following printf conventions
+ *
+ * @param s
+ * a PrintStream
+ * @param fmt
+ * the format string
+ * @param x
+ * the double to print
+ */
+ public static void print(java.io.PrintStream s, String fmt, double x)
+ {
+ s.print(new Format(fmt).form(x));
+ }
+
+ /**
+ * prints a formatted number following printf conventions
+ *
+ * @param s
+ * a PrintStream
+ * @param fmt
+ * the format string
+ * @param x
+ * the long to print
+ */
+ public static void print(java.io.PrintStream s, String fmt, long x)
+ {
+ s.print(new Format(fmt).form(x));
+ }
+
+ /**
+ * prints a formatted number following printf conventions
+ *
+ * @param s
+ * a PrintStream
+ * @param fmt
+ * the format string
+ * @param x
+ * the character to
+ */
+ public static void print(java.io.PrintStream s, String fmt, char x)
+ {
+ s.print(new Format(fmt).form(x));
+ }
+
+ /**
+ * prints a formatted number following printf conventions
+ *
+ * @param s
+ * a PrintStream, fmt the format string
+ * @param x
+ * a string that represents the digits to print
+ */
+ public static void print(java.io.PrintStream s, String fmt, String x)
+ {
+ s.print(new Format(fmt).form(x));
+ }
+
+ /**
+ * Converts a string of digits (decimal, octal or hex) to an integer
+ *
+ * @param s
+ * a string
+ * @return the numeric value of the prefix of s representing a base 10 integer
+ */
+ public static int atoi(String s)
+ {
+ return (int) atol(s);
+ }
+
+ /**
+ * Converts a string of digits (decimal, octal or hex) to a long integer
+ *
+ * @param s
+ * a string
+ * @return the numeric value of the prefix of s representing a base 10 integer
+ */
+ public static long atol(String s)
+ {
+ int i = 0;
+
+ while ((i < s.length()) && Character.isWhitespace(s.charAt(i)))
+ {
+ i++;
+ }
+
+ if ((i < s.length()) && (s.charAt(i) == '0'))
+ {
+ if (((i + 1) < s.length())
+ && ((s.charAt(i + 1) == 'x') || (s.charAt(i + 1) == 'X')))
+ {
+ return parseLong(s.substring(i + 2), 16);
+ }
+ else
+ {
+ return parseLong(s, 8);
+ }
+ }
+ else
+ {
+ return parseLong(s, 10);
+ }
+ }
+
+ /**
+ * DOCUMENT ME!
+ *
+ * @param s
+ * DOCUMENT ME!
+ * @param base
+ * DOCUMENT ME!
+ *
+ * @return DOCUMENT ME!
+ */
+ private static long parseLong(String s, int base)
+ {
+ int i = 0;
+ int sign = 1;
+ long r = 0;
+
+ while ((i < s.length()) && Character.isWhitespace(s.charAt(i)))
+ {
+ i++;
+ }
+
+ if ((i < s.length()) && (s.charAt(i) == '-'))
+ {
+ sign = -1;
+ i++;
+ }
+ else if ((i < s.length()) && (s.charAt(i) == '+'))
+ {
+ i++;
+ }
+
+ while (i < s.length())
+ {
+ char ch = s.charAt(i);
+
+ if (('0' <= ch) && (ch < ('0' + base)))
+ {
+ r = ((r * base) + ch) - '0';
+ }
+ else if (('A' <= ch) && (ch < (('A' + base) - 10)))
+ {
+ r = ((r * base) + ch) - 'A' + 10;
+ }
+ else if (('a' <= ch) && (ch < (('a' + base) - 10)))
+ {
+ r = ((r * base) + ch) - 'a' + 10;
+ }
+ else
+ {
+ return r * sign;
+ }
+
+ i++;
+ }
+
+ return r * sign;
+ }
+
+ /**
+ * Converts a string of digits to an double
+ *
+ * @param s
+ * a string
+ */
+ public static double atof(String s)
+ {
+ int i = 0;
+ int sign = 1;
+ double r = 0; // integer part
+ // double f = 0; // fractional part
+ double p = 1; // exponent of fractional part
+ int state = 0; // 0 = int part, 1 = frac part
+
+ while ((i < s.length()) && Character.isWhitespace(s.charAt(i)))
+ {
+ i++;
+ }
+
+ if ((i < s.length()) && (s.charAt(i) == '-'))
+ {
+ sign = -1;
+ i++;
+ }
+ else if ((i < s.length()) && (s.charAt(i) == '+'))
+ {
+ i++;
+ }
+
+ while (i < s.length())
+ {
+ char ch = s.charAt(i);
+
+ if (('0' <= ch) && (ch <= '9'))
+ {
+ if (state == 0)
+ {
+ r = ((r * 10) + ch) - '0';
+ }
+ else if (state == 1)
+ {
+ p = p / 10;
+ r = r + (p * (ch - '0'));
+ }
+ }
+ else if (ch == '.')
+ {
+ if (state == 0)
+ {
+ state = 1;
+ }
+ else
+ {
+ return sign * r;
+ }
+ }
+ else if ((ch == 'e') || (ch == 'E'))
+ {
+ long e = (int) parseLong(s.substring(i + 1), 10);
+
+ return sign * r * Math.pow(10, e);
+ }
+ else
+ {
+ return sign * r;
+ }
+
+ i++;
+ }
+
+ return sign * r;
+ }
+
+ /**
+ * Formats a double into a string (like sprintf in C)
+ *
+ * @param x
+ * the number to format
+ * @return the formatted string
+ * @exception IllegalArgumentException
+ * if bad argument
+ */
+ public String form(double x)
+ {
+ String r;
+
+ if (precision < 0)
+ {
+ precision = 6;
+ }
+
+ int s = 1;
+
+ if (x < 0)
+ {
+ x = -x;
+ s = -1;
+ }
+
+ if (fmt == 'f')
+ {
+ r = fixed_format(x);
+ }
+ else if ((fmt == 'e') || (fmt == 'E') || (fmt == 'g') || (fmt == 'G'))
+ {
+ r = exp_format(x);
+ }
+ else
+ {
+ throw new java.lang.IllegalArgumentException();
+ }
+
+ return pad(sign(s, r));
+ }
+
+ /**
+ * Formats a long integer into a string (like sprintf in C)
+ *
+ * @param x
+ * the number to format
+ * @return the formatted string
+ */
+ public String form(long x)
+ {
+ String r;
+ int s = 0;
+
+ if ((fmt == 'd') || (fmt == 'i'))
+ {
+ if (x < 0)
+ {
+ r = ("" + x).substring(1);
+ s = -1;
+ }
+ else
+ {
+ r = "" + x;
+ s = 1;
+ }
+ }
+ else if (fmt == 'o')
+ {
+ r = convert(x, 3, 7, "01234567");
+ }
+ else if (fmt == 'x')
+ {
+ r = convert(x, 4, 15, "0123456789abcdef");
+ }
+ else if (fmt == 'X')
+ {
+ r = convert(x, 4, 15, "0123456789ABCDEF");
+ }
+ else
+ {
+ throw new java.lang.IllegalArgumentException();
+ }
+
+ return pad(sign(s, r));
+ }
+
+ /**
+ * Formats a character into a string (like sprintf in C)
+ *
+ * @param x
+ * the value to format
+ * @return the formatted string
+ */
+ public String form(char c)
+ {
+ if (fmt != 'c')
+ {
+ throw new java.lang.IllegalArgumentException();
+ }
+
+ String r = "" + c;
+
+ return pad(r);
+ }
+
+ /**
+ * Formats a string into a larger string (like sprintf in C)
+ *
+ * @param x
+ * the value to format
+ * @return the formatted string
+ */
+ public String form(String s)
+ {
+ if (fmt != 's')
+ {
+ throw new java.lang.IllegalArgumentException();
+ }
+
+ if (precision >= 0)
+ {
+ s = s.substring(0, precision);
+ }
+
+ return pad(s);
+ }
+
+ /**
+ * DOCUMENT ME!
+ *
+ * @param c
+ * DOCUMENT ME!
+ * @param n
+ * DOCUMENT ME!
+ *
+ * @return DOCUMENT ME!
+ */
+ private static String repeat(char c, int n)
+ {
+ if (n <= 0)
+ {
+ return "";
+ }
+
+ StringBuffer s = new StringBuffer(n);
+
+ for (int i = 0; i < n; i++)
+ {
+ s.append(c);
+ }
+
+ return s.toString();
+ }
+
+ /**
+ * DOCUMENT ME!
+ *
+ * @param x
+ * DOCUMENT ME!
+ * @param n
+ * DOCUMENT ME!
+ * @param m
+ * DOCUMENT ME!
+ * @param d
+ * DOCUMENT ME!
+ *
+ * @return DOCUMENT ME!
+ */
+ private static String convert(long x, int n, int m, String d)
+ {
+ if (x == 0)
+ {
+ return "0";
+ }
+
+ String r = "";
+
+ while (x != 0)
+ {
+ r = d.charAt((int) (x & m)) + r;
+ x = x >>> n;
+ }
+
+ return r;
+ }
+
+ /**
+ * DOCUMENT ME!
+ *
+ * @param r
+ * DOCUMENT ME!
+ *
+ * @return DOCUMENT ME!
+ */
+ private String pad(String r)
+ {
+ String p = repeat(' ', width - r.length());
+
+ if (left_align)
+ {
+ return pre + r + p + post;
+ }
+ else
+ {
+ return pre + p + r + post;
+ }
+ }
+
+ /**
+ * DOCUMENT ME!
+ *
+ * @param s
+ * DOCUMENT ME!
+ * @param r
+ * DOCUMENT ME!
+ *
+ * @return DOCUMENT ME!
+ */
+ private String sign(int s, String r)
+ {
+ String p = "";
+
+ if (s < 0)
+ {
+ p = "-";
+ }
+ else if (s > 0)
+ {
+ if (show_plus)
+ {
+ p = "+";
+ }
+ else if (show_space)
+ {
+ p = " ";
+ }
+ }
+ else
+ {
+ if ((fmt == 'o') && alternate && (r.length() > 0)
+ && (r.charAt(0) != '0'))
+ {
+ p = "0";
+ }
+ else if ((fmt == 'x') && alternate)
+ {
+ p = "0x";
+ }
+ else if ((fmt == 'X') && alternate)
+ {
+ p = "0X";
+ }
+ }
+
+ int w = 0;
+
+ if (leading_zeroes)
+ {
+ w = width;
+ }
+ else if (((fmt == 'd') || (fmt == 'i') || (fmt == 'x') || (fmt == 'X') || (fmt == 'o'))
+ && (precision > 0))
+ {
+ w = precision;
+ }
+
+ return p + repeat('0', w - p.length() - r.length()) + r;
+ }
+
+ /**
+ * DOCUMENT ME!
+ *
+ * @param d
+ * DOCUMENT ME!
+ *
+ * @return DOCUMENT ME!
+ */
+ private String fixed_format(double d)
+ {
+ boolean removeTrailing = ((fmt == 'G') || (fmt == 'g')) && !alternate;
+
+ // remove trailing zeroes and decimal point
+ if (d > 0x7FFFFFFFFFFFFFFFL)
+ {
+ return exp_format(d);
+ }
+
+ if (precision == 0)
+ {
+ return (long) (d + 0.5) + (removeTrailing ? "" : ".");
+ }
+
+ long whole = (long) d;
+ double fr = d - whole; // fractional part
+
+ if ((fr >= 1) || (fr < 0))
+ {
+ return exp_format(d);
+ }
+
+ double factor = 1;
+ String leading_zeroes = "";
+
+ for (int i = 1; (i <= precision) && (factor <= 0x7FFFFFFFFFFFFFFFL); i++)
+ {
+ factor *= 10;
+ leading_zeroes = leading_zeroes + "0";
+ }
+
+ long l = (long) ((factor * fr) + 0.5);
+
+ if (l >= factor)
+ {
+ l = 0;
+ whole++;
+ }
+
+ // CSH 10-25-97
+ String z = leading_zeroes + l;
+ z = "." + z.substring(z.length() - precision, z.length());
+
+ if (removeTrailing)
+ {
+ int t = z.length() - 1;
+
+ while ((t >= 0) && (z.charAt(t) == '0'))
+ {
+ t--;
+ }
+
+ if ((t >= 0) && (z.charAt(t) == '.'))
+ {
+ t--;
+ }
+
+ z = z.substring(0, t + 1);
+ }
+
+ return whole + z;
+ }
+
+ /**
+ * DOCUMENT ME!
+ *
+ * @param d
+ * DOCUMENT ME!
+ *
+ * @return DOCUMENT ME!
+ */
+ private String exp_format(double d)
+ {
+ String f = "";
+ int e = 0;
+ double dd = d;
+ double factor = 1;
+
+ if (d != 0)
+ {
+ while (dd > 10)
+ {
+ e++;
+ factor /= 10;
+ dd = dd / 10;
+ }
+
+ while (dd < 1)
+ {
+ e--;
+ factor *= 10;
+ dd = dd * 10;
+ }
+ }
+
+ if (((fmt == 'g') || (fmt == 'G')) && (e >= -4) && (e < precision))
+ {
+ return fixed_format(d);
+ }
+
+ d = d * factor;
+ f = f + fixed_format(d);
+
+ if ((fmt == 'e') || (fmt == 'g'))
+ {
+ f = f + "e";
+ }
+ else
+ {
+ f = f + "E";
+ }
+
+ String p = "000";
+
+ if (e >= 0)
+ {
+ f = f + "+";
+ p = p + e;
+ }
+ else
+ {
+ f = f + "-";
+ p = p + (-e);
+ }
+
+ return f + p.substring(p.length() - 3, p.length());
+ }
+}