/*
The MIT License
Copyright (c) 2004-2015 Paul R. Holser, Jr.
Permission is hereby granted, free of charge, to any person obtaining
a copy of this software and associated documentation files (the
"Software"), to deal in the Software without restriction, including
without limitation the rights to use, copy, modify, merge, publish,
distribute, sublicense, and/or sell copies of the Software, and to
permit persons to whom the Software is furnished to do so, subject to
the following conditions:
The above copyright notice and this permission notice shall be
included in all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
package joptsimple.internal;
import java.text.
BreakIterator;
import java.util.
ArrayList;
import java.util.
List;
import static java.text.
BreakIterator.*;
import static joptsimple.internal.
Strings.*;
/**
* @author <a href="mailto:pholser@alumni.rice.edu">Paul Holser</a>
*/
class
Columns {
private static final int
INDENT_WIDTH = 2;
private final int
optionWidth;
private final int
descriptionWidth;
Columns( int
optionWidth, int
descriptionWidth ) {
this.
optionWidth =
optionWidth;
this.
descriptionWidth =
descriptionWidth;
}
List<
Row>
fit(
Row row ) {
List<
String>
options =
piecesOf(
row.
option,
optionWidth );
List<
String>
descriptions =
piecesOf(
row.
description,
descriptionWidth );
List<
Row>
rows = new
ArrayList<>();
for ( int
i = 0;
i <
Math.
max(
options.
size(),
descriptions.
size() ); ++
i )
rows.
add( new
Row(
itemOrEmpty(
options,
i ),
itemOrEmpty(
descriptions,
i ) ) );
return
rows;
}
private static
String itemOrEmpty(
List<
String>
items, int
index ) {
return
index >=
items.
size() ? "" :
items.
get(
index );
}
private
List<
String>
piecesOf(
String raw, int
width ) {
List<
String>
pieces = new
ArrayList<>();
for (
String each :
raw.
trim().
split(
LINE_SEPARATOR ) )
pieces.
addAll(
piecesOfEmbeddedLine(
each,
width ) );
return
pieces;
}
private
List<
String>
piecesOfEmbeddedLine(
String line, int
width ) {
List<
String>
pieces = new
ArrayList<>();
BreakIterator words =
BreakIterator.
getLineInstance();
words.
setText(
line );
StringBuilder nextPiece = new
StringBuilder();
int
start =
words.
first();
for ( int
end =
words.
next();
end !=
DONE;
start =
end,
end =
words.
next() )
nextPiece =
processNextWord(
line,
nextPiece,
start,
end,
width,
pieces );
if (
nextPiece.
length() > 0 )
pieces.
add(
nextPiece.
toString() );
return
pieces;
}
private
StringBuilder processNextWord(
String source,
StringBuilder nextPiece, int
start, int
end, int
width,
List<
String>
pieces ) {
StringBuilder augmented =
nextPiece;
String word =
source.
substring(
start,
end );
if (
augmented.
length() +
word.
length() >
width ) {
pieces.
add(
augmented.
toString().
replaceAll( "\\s+$", "" ) );
augmented = new
StringBuilder(
repeat( ' ',
INDENT_WIDTH ) ).
append(
word );
}
else
augmented.
append(
word );
return
augmented;
}
}