org.jgrasstools.gears.io.grasslegacy.utils.Format Maven / Gradle / Ivy
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/*
* JGrass - Free Open Source Java GIS http://www.jgrass.org
* (C) HydroloGIS - www.hydrologis.com
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 3 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 Lesser General Public License
* along with this program. If not, see
* - a % (required)
*
- a modifier (optional)
*
* - +
- forces display of + for positive numbers
*
- ~
- do not count leading + or - in length
*
- 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
- signed long integer and integer in decimal
*
- u
- unsigned integer in decimal
*
- x
- unsigned integer in hexadecimal
*
- o
- unsigned integer in octal
*
- s
- string
*
- c
- character
*
*
*/
public Format( String s ) {
width = 0;
precision = -1;
pre = "";
post = "";
leadingZeroes = false;
showPlus = false;
alternate = false;
showSpace = false;
leftAlign = false;
countSignInLen = true;
fmt = ' ';
int state = 0;
int length = s.length();
int parseState = 0;
// 0 = prefix, 1 = flags, 2 = width, 3 = precision,
// 4 = format, 5 = end
int i = 0;
while( parseState == 0 ) {
if (i >= length) {
parseState = 5;
} else if (s.charAt(i) == '%') {
if (i < length - 1) {
if (s.charAt(i + 1) == '%') {
pre = pre + '%';
i++;
} else {
parseState = 1;
}
} else {
throw new java.lang.IllegalArgumentException();
}
} else {
pre = pre + s.charAt(i);
}
i++;
}
while( parseState == 1 ) {
if (i >= length) {
parseState = 5;
} else if (s.charAt(i) == ' ') {
showSpace = true;
} else if (s.charAt(i) == '-') {
leftAlign = true;
} else if (s.charAt(i) == '+') {
showPlus = true;
} else if (s.charAt(i) == '0') {
leadingZeroes = true;
} else if (s.charAt(i) == '#') {
alternate = true;
} else if (s.charAt(i) == '~') {
countSignInLen = false;
} else {
parseState = 2;
i--;
}
i++;
}
while( parseState == 2 ) {
if (i >= length) {
parseState = 5;
} else if ('0' <= s.charAt(i) && s.charAt(i) <= '9') {
width = width * 10 + s.charAt(i) - '0';
i++;
} else if (s.charAt(i) == '.') {
parseState = 3;
precision = 0;
i++;
} else {
parseState = 4;
}
}
while( parseState == 3 ) {
if (i >= length) {
parseState = 5;
} else if ('0' <= s.charAt(i) && s.charAt(i) <= '9') {
precision = precision * 10 + s.charAt(i) - '0';
i++;
} else {
parseState = 4;
}
}
if (parseState == 4) {
if (i >= length) {
parseState = 5;
} else {
fmt = s.charAt(i);
}
i++;
}
if (i < length) {
post = s.substring(i, length);
}
}
/**
*
* @param d
*
* @return
*/
private String expFormat( 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 fixedFormat(d);
}
d = d * factor;
f = f + fixedFormat(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());
}
/**
*
* @param d
*
* @return
*/
private String fixedFormat( double d ) {
boolean removeTrailing = (fmt == 'G' || fmt == 'g') && !alternate;
// remove trailing zeroes and decimal point
if (d > 0x7FFFFFFFFFFFFFFFL) {
return expFormat(d);
}
if (precision == 0) {
return (long) (d /*+ 0.5*/) + (removeTrailing ? "" : "."); // no rounding
}
long whole = (long) d;
double fr = d - whole; // fractional part
if (fr >= 1 || fr < 0) {
return expFormat(d);
}
double factor = 1;
String leadingZeroes = "";
for( int i = 1; i <= precision && factor <= 0x7FFFFFFFFFFFFFFFL; i++ ) {
factor *= 10;
leadingZeroes = leadingZeroes + "0";
}
long l = (long) (factor * fr /*+ 0.5*/); // no rounding
if (l >= factor) {
l = 0;
whole++;
}
String z = leadingZeroes + 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;
}
/**
*
* @param r
*
* @return
*/
private String pad( String r ) {
String p = repeat(' ', width - r.length());
if (leftAlign) {
return pre + r + p + post;
} else {
return pre + p + r + post;
}
}
/**
*
* @param s
* @param base
*
* @return
*/
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;
}
/**
*
* @param c
* @param n
*
* @return
*/
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();
}
/**
*
* @param s
* @param r
*
* @return
*/
private String sign( int s, String r ) {
String p = "";
if (s < 0) {
p = "-";
} else if (s > 0) {
if (showPlus) {
p = "+";
} else if (showSpace) {
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 (leadingZeroes) {
w = width;
} else if ((fmt == 'u' || fmt == 'd' || fmt == 'i' || fmt == 'x' || fmt == 'X' || fmt == 'o') && precision > 0) {
w = precision;
}
if (countSignInLen) {
return p + repeat('0', w - p.length() - r.length()) + r;
} else {
return p + repeat('0', w - r.length()) + r;
}
}
// ---------------------------------------------------------------- form methods
/**
* Formats a character into a string (like sprintf in C)
*
* @param c 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);
}
public String form( Character c ) {
return form(c.charValue());
}
/**
* Formats a double into a string (like sprintf in C)
*
* @param x the number to format
*
* @return the formatted string
*/
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 = fixedFormat(x);
} else if (fmt == 'e' || fmt == 'E' || fmt == 'g' || fmt == 'G') {
r = expFormat(x);
} else {
throw new java.lang.IllegalArgumentException();
}
return pad(sign(s, r));
}
public String form( Double x ) {
return form(x.doubleValue());
}
public String form( Float x ) {
return form(x.doubleValue());
}
/**
* 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') {
if (x < 0) {
r = ("" + x).substring(1);
s = -1;
} else {
r = "" + x;
s = 1;
}
} else if (fmt == 'i') {
int xx = (int) x;
if (xx < 0) {
r = ("" + xx).substring(1);
s = -1;
} else {
r = "" + xx;
s = 1;
}
} else if (fmt == 'u') {
long xl = x & 0x00000000FFFFFFFFL;
r = "" + xl;
s = 1;
} else if (fmt == 'o') {
r = convert(x, 3, "01234567");
} else if (fmt == 'x') {
r = convert(x, 4, "0123456789abcdef");
} else if (fmt == 'X') {
r = convert(x, 4, "0123456789ABCDEF");
} else {
throw new java.lang.IllegalArgumentException();
}
return pad(sign(s, r));
}
public String form( Long x ) {
return form(x.longValue());
}
/**
* Formats an integer into a string (like sprintf in C)
*
* @param x the number to format
*
* @return the formatted string
*/
public String form( int 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 {
long xl = x & 0x00000000FFFFFFFFL;
if (fmt == 'u') {
r = "" + xl;
s = 1;
} else if (fmt == 'o') {
r = convert(xl, 3, "01234567");
} else if (fmt == 'x') {
r = convert(xl, 4, "0123456789abcdef");
} else if (fmt == 'X') {
r = convert(xl, 4, "0123456789ABCDEF");
} else {
throw new java.lang.IllegalArgumentException();
}
}
return pad(sign(s, r));
}
public String form( Integer x ) {
return form(x.intValue());
}
/**
* Formats a string into a larger string (like sprintf in C)
*
* @param s the value to format
*
* @return the formatted string
*/
public String form( String s ) {
if (fmt != 's') {
throw new java.lang.IllegalArgumentException();
}
if (precision >= 0 && precision < s.length()) {
s = s.substring(0, precision);
}
return pad(s);
}
// ---------------------------------------------------------------- misc conversion
/**
* Converts a string of digits to an double
*
* @param s a string
*
* @return double converted from 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;
}
/**
* 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);
}
}
/**
* Converts number to string
*
* @param x value to convert
* @param n conversion base
* @param d string with characters for conversion.
*
* @return converted number as string
*/
public static String convert( long x, int n, String d ) {
if (x == 0) {
return "0";
}
String r = "";
int m = 1 << n;
m--;
while( x != 0 ) {
r = d.charAt((int) (x & m)) + r;
x = x >>> n;
}
return r;
}
// ---------------------------------------------------------------- sprintf
/**
* prints a formatted number following printf conventions
*
* @param fmt the format string
* @param x the character to
*
* @return formated string
*/
public static String sprintf( String fmt, char x ) {
return new Format(fmt).form(x);
}
public static String sprintf( String fmt, Character x ) {
return new Format(fmt).form(x);
}
/**
* prints a formatted number following printf conventions
*
* @param fmt the format string
* @param x the double to print
*
* @return formated string
*/
public static String sprintf( String fmt, double x ) {
return new Format(fmt).form(x);
}
public static String sprintf( String fmt, Double x ) {
return new Format(fmt).form(x);
}
public static String sprintf( String fmt, Float x ) {
return new Format(fmt).form(x);
}
/**
* prints a formatted number following printf conventions
*
* @param fmt the format string
* @param x the long to print
*
* @return formated string
*/
public static String sprintf( String fmt, long x ) {
return new Format(fmt).form(x);
}
public static String sprintf( String fmt, Long x ) {
return new Format(fmt).form(x);
}
/**
* prints a formatted number following printf conventions
*
* @param fmt the format string
* @param x the int to print
*
* @return formated string
*/
public static String sprintf( String fmt, int x ) {
return new Format(fmt).form(x);
}
public static String sprintf( String fmt, Integer x ) {
return new Format(fmt).form(x);
}
/**
* prints a formatted number following printf conventions
*
* @param fmt
* @param x a string that represents the digits to print
*/
public static String sprintf( String fmt, String x ) {
return new Format(fmt).form(x);
}
// ---------------------------------------------------------------- array sprintf
/**
* Splits input string on '%' and returns an array of substrings that can be
* used for multiple scanf. Each substring has a one-char prefix that can
* take one of two values:
* '+' wich indicates that substring can be simply added to the resulting string
* ' ' wich indicates that substring has to be additionally processed.
*
* @param s Input string
*
* @return splited input string
*/
private static String[] split( String s ) {
ArrayList list = new ArrayList();
int lasti = 0;
int i = s.indexOf("%");
if (i == -1) {
return new String[]{s};
}
if (i > 0) {
list.add("+" + s.substring(0, i));
lasti = i;
i++;
i = s.indexOf("%", i);
} else if (i == 0) {
i = s.indexOf("%", i + 1);
}
while( i != -1 ) {
String ss = s.substring(lasti, i);
if (ss.equals("%")) {
lasti = i;
i++;
i = s.indexOf("%", i);
if (i != -1) {
ss = s.substring(lasti, i);
} else {
ss = s.substring(lasti);
}
list.add("+" + ss);
} else {
list.add(" " + ss);
}
if (i == -1) {
lasti = i;
break;
}
lasti = i;
i++;
i = s.indexOf("%", i);
}
if (lasti != -1) {
list.add(" " + s.substring(lasti));
}
String[] ret = new String[list.size()];
for( i = 0; i < list.size(); i++ ) {
ret[i] = (String) list.get(i);
}
return ret;
}
/**
* Sprintf multiple strings.
*
* @param s
* @param params
*
* @return formated string
*/
public static String sprintf( String s, Object[] params ) {
if ((s == null) || (params == null)) {
return s;
}
StringBuffer result = new StringBuffer("");
String[] ss = split(s);
int p = 0;
for( int i = 0; i < ss.length; i++ ) {
char c = ss[i].charAt(0);
String t = ss[i].substring(1);
if (c == '+') {
result.append(t);
} else {
Object param = params[p];
if (param instanceof Integer) {
result.append(new Format(t).form((Integer) param));
} else if (param instanceof Long) {
result.append(new Format(t).form((Long) param));
} else if (param instanceof Character) {
result.append(new Format(t).form((Character) param));
} else if (param instanceof Double) {
result.append(new Format(t).form((Double) param));
} else if (param instanceof Double) {
result.append(new Format(t).form(new Float((Double) param)));
} else {
result.append(new Format(t).form(param.toString()));
}
p++;
}
}
return result.toString();
}
public static String sprintf( String s, String[] params ) {
return sprintf(s, (Object[]) params);
}
public static String sprintf( String s, Integer[] params ) {
return sprintf(s, (Object[]) params);
}
public static String sprintf( String s, Long[] params ) {
return sprintf(s, (Object[]) params);
}
public static String sprintf( String s, Double[] params ) {
return sprintf(s, (Object[]) params);
}
public static String sprintf( String s, Float[] params ) {
return sprintf(s, (Object[]) params);
}
public static String sprintf( String s, Character[] params ) {
return sprintf(s, (Object[]) params);
}
// ---------------------------------------------------------------- primitives array sprintf
public static String sprintf( String s, int[] params ) {
if ((s == null) || (params == null)) {
return s;
}
StringBuffer result = new StringBuffer("");
String[] ss = split(s);
int p = 0;
for( int i = 0; i < ss.length; i++ ) {
char c = ss[i].charAt(0);
String t = ss[i].substring(1);
if (c == '+') {
result.append(t);
} else {
int param = params[p];
result.append(new Format(t).form(param));
p++;
}
}
return result.toString();
}
}