com.aspectran.core.util.TextStyler Maven / Gradle / Ivy
/*
* Copyright (c) 2008-2019 The Aspectran Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.aspectran.core.util;
import com.aspectran.core.context.rule.type.TextStyleType;
import com.aspectran.core.util.apon.AponFormat;
/**
* Contains methods to transform a given text to a specific style.
*
* Created: 2017. 3. 22.
*/
public class TextStyler {
public static String styling(String text, String style) {
TextStyleType textStyleType = TextStyleType.resolve(style);
if (style != null && textStyleType == null) {
throw new IllegalArgumentException("No text style type for '" + style + "'");
}
return styling(text, textStyleType);
}
public static String styling(String text, TextStyleType textStyleType) {
if (textStyleType == TextStyleType.APON) {
return TextStyler.offAponStyle(text);
} else if (textStyleType == TextStyleType.COMPACT) {
return TextStyler.compact(text);
} else if (textStyleType == TextStyleType.COMPRESSED) {
return TextStyler.compress(text);
} else {
return text;
}
}
public static String offAponStyle(String text) {
if (text == null || text.isEmpty()) {
return text;
}
StringBuilder sb = new StringBuilder(text.length());
int start = 0;
int line = 0;
for (int end = 0; end < text.length(); end++) {
char c = text.charAt(end);
if (start == 0 && c == AponFormat.TEXT_LINE_START) {
if (line > 0) {
sb.append(AponFormat.NEW_LINE);
}
start = end + 1;
line++;
} else if (start > 0) {
if (c == '\n' || c == '\r') {
if (end > start) {
sb.append(text, start, end);
}
start = 0;
}
}
}
if (start > 0 && start < text.length()) {
sb.append(text, start, text.length());
}
return sb.toString();
}
public static String compact(String text) {
if (text == null || text.isEmpty()) {
return text;
}
text = text.trim();
StringBuilder sb = new StringBuilder(text.length());
int start = 0;
for (int end = 0; end < text.length(); end++) {
char c = text.charAt(end);
if (c == '\n' || c == '\r') {
if (start > -1) {
sb.append(text.substring(start, end).trim());
sb.append(System.lineSeparator());
start = -1;
}
} else if (start == -1) {
start = end;
}
}
if (start > -1) {
sb.append(text.substring(start).trim());
}
return sb.toString();
}
public static String compress(String text) {
if (text == null || text.isEmpty()) {
return text;
}
text = text.trim();
StringBuilder sb = new StringBuilder(text.length());
int start = 0;
for (int end = 0; end < text.length(); end++) {
char c = text.charAt(end);
if (c == '\n' || c == '\r') {
if (start > -1) {
sb.append(text.substring(start, end).trim());
start = -1;
}
} else if (start == -1) {
start = end;
}
}
if (start > -1) {
sb.append(text.substring(start).trim());
}
return sb.toString();
}
}