org.nuiton.i18n.plugin.bundle.StringFormatToMessageFormatConverter Maven / Gradle / Ivy
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/*
* #%L
* I18n :: Maven Plugin
* %%
* Copyright (C) 2007 - 2024 Code Lutin, Ultreia.io
* %%
* 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 Lesser Public License for more details.
*
* You should have received a copy of the GNU General Lesser Public
* License along with this program. If not, see
* .
* #L%
*/
package org.nuiton.i18n.plugin.bundle;
import java.text.MessageFormat;
import java.util.Formatter;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
import org.apache.commons.lang3.StringUtils;
import org.apache.logging.log4j.Logger;
import org.apache.logging.log4j.LogManager;
import org.codehaus.plexus.component.annotations.Component;
/**
* Implementation of {@link BundleFormatConverter} to convert {@link Formatter}
* syntax to a {@link MessageFormat} syntax.
*
* Created: 05/05/11
*
* @author Florian Desbois
* @author Tony Chemit - [email protected]
* @since 2.4
*/
@Component(role=BundleFormatConverter.class, hint = "toMessageFormat")
public class StringFormatToMessageFormatConverter implements BundleFormatConverter {
/** Logger. */
private static final Logger log =
LogManager.getLogger(StringFormatToMessageFormatConverter.class);
private static Pattern PATTERN = Pattern.compile("%\\$?(\\d?)[^\\s']*");
@Override
public String convert(String value) {
String result;
Matcher matcher = PATTERN.matcher(value);
boolean matches = matcher.find();
if (log.isDebugEnabled()) {
log.debug(String.format("> value : %s _ matches ? %s", value, matches));
}
if (matches) {
// Reset done, because of first find()
matcher.reset();
StringBuffer sb = new StringBuffer();
int i = 0;
while (matcher.find()) {
if (log.isDebugEnabled()) {
log.debug(String.format("> match group : %s", matcher.group(0)));
log.debug(String.format("> match group for number : %s", matcher.group(1)));
}
String argNumber = matcher.group(1);
int nb;
if (StringUtils.isNotEmpty(argNumber)) {
// there is a arg position number, so must use the -1 value
nb = Integer.parseInt(argNumber) - 1;
} else {
// use the current argument position value
nb = i;
}
// Append replacement for current occurence
matcher.appendReplacement(sb, "\\{" + nb + "\\}");
i++;
}
// Append last chars from input String
matcher.appendTail(sb);
result = sb.toString();
if (log.isDebugEnabled()) {
log.debug(String.format("Result : %s", result));
}
} else {
// there is no argument in incoming string value
result = value;
}
// Always escape quote ' to ''
result = escapeQuoteChar(result);
return result;
}
/**
* Escape ' char with '', needed by {@link MessageFormat}.
*
* @param value Message that contains '
* @return the message with ' escaped
*/
private String escapeQuoteChar(String value) {
// Replace ' by ''
String result = value.replaceAll("'", "''");
if (log.isDebugEnabled()) {
log.debug(String.format("Result with ' escape : %s", result));
}
return result;
}
}