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/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You 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.
*/
#include <log4cxx/logstring.h>
#include <log4cxx/pattern/formattinginfo.h>
#include <limits.h>
using namespace log4cxx;
using namespace log4cxx::pattern;
IMPLEMENT_LOG4CXX_OBJECT(FormattingInfo)
/**
* Creates new instance.
* @param leftAlign left align if true.
* @param minLength minimum length.
* @param maxLength maximum length.
*/
FormattingInfo::FormattingInfo(
const bool leftAlign1, const int minLength1, const int maxLength1) :
minLength(minLength1),
maxLength(maxLength1),
leftAlign(leftAlign1) {
}
/**
* Gets default instance.
* @return default instance.
*/
FormattingInfoPtr FormattingInfo::getDefault() {
static FormattingInfoPtr def(new FormattingInfo(false, 0, INT_MAX));
return def;
}
/**
* Adjust the content of the buffer based on the specified lengths and alignment.
*
* @param fieldStart start of field in buffer.
* @param buffer buffer to be modified.
*/
void FormattingInfo::format(const int fieldStart, LogString& buffer) const {
int rawLength = buffer.length() - fieldStart;
if (rawLength > maxLength) {
buffer.erase(buffer.begin() + fieldStart,
buffer.begin() + fieldStart + (rawLength - maxLength));
} else if (rawLength < minLength) {
if (leftAlign) {
buffer.append(minLength - rawLength, (logchar) 0x20 /* ' ' */);
} else {
buffer.insert(fieldStart, minLength - rawLength, 0x20 /* ' ' */);
}
}
}
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