package be.nikiroo.utils.main;
import java.util.ArrayList;
import java.util.List;
import java.util.Scanner;
import be.nikiroo.utils.StringUtils;
import be.nikiroo.utils.StringUtils.Alignment;
/**
* Text justification (left, right, center, justify).
*
* @author niki
*/
public class justify {
/**
* Syntax: $0 ([left|right|center|justify]) (max width)
*
*
* - mode: left, right, center or full justification (defaults to left)
* - max width: the maximum width of a line, or "" for "no maximum"
* (defaults to "no maximum")
*
*
* @param args
*/
public static void main(String[] args) {
int width = -1;
StringUtils.Alignment align = Alignment.LEFT;
if (args.length >= 1) {
align = Alignment.valueOf(args[0].toUpperCase());
}
if (args.length >= 2) {
width = Integer.parseInt(args[1]);
}
// TODO: move to utils?
List lines = new ArrayList();
Scanner scan = new Scanner(System.in);
scan.useDelimiter("[\r\n]");
try {
StringBuilder previous = null;
StringBuilder tmp = new StringBuilder();
while (scan.hasNext()) {
String current = scan.next();
tmp.setLength(0);
for (String word : current.split(" ")) {
if (word.isEmpty()) {
continue;
}
if (tmp.length() > 0) {
tmp.append(' ');
}
tmp.append(word.trim());
}
current = tmp.toString();
if (previous == null) {
previous = new StringBuilder();
} else {
if (current.isEmpty() || isFullLine(previous)) {
lines.add(previous.toString());
previous.setLength(0);
} else {
previous.append(' ');
}
}
previous.append(current);
}
if (previous != null) {
lines.add(previous.toString());
}
} finally {
scan.close();
}
// TODO: supports bullet lines "- xxx" and sub levels
for (String line : lines) {
for (String subline : StringUtils.justifyText(line, width, align)) {
System.out.println(subline);
}
}
}
static private boolean isFullLine(StringBuilder line) {
return line.length() == 0 //
|| line.charAt(line.length() - 1) == '.'
|| line.charAt(line.length() - 1) == '"'
|| line.charAt(line.length() - 1) == 'ยป';
}
}