de.jcup.egradle.integration.IntegrationTestTextProvider.java Source code

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Here is the source code for de.jcup.egradle.integration.IntegrationTestTextProvider.java

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/*
 * Copyright 2016 Albert Tregnaghi
 *
 * 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 de.jcup.egradle.integration;

import org.apache.commons.lang3.StringUtils;

import de.jcup.egradle.core.TextProvider;
import de.jcup.egradle.core.TextProviderException;

public class IntegrationTestTextProvider implements TextProvider {

    private String text;

    IntegrationTestTextProvider(String text) {
        this.text = text;
    }

    @Override
    public String getText(int offset, int length) throws TextProviderException {
        try {
            return text.substring(offset, offset + length);
        } catch (RuntimeException e) {
            throw new TextProviderException("cannot get text", e);
        }
    }

    @Override
    public String getText() {
        return text;
    }

    @Override
    public int getLineOffset(int offset) throws TextProviderException {
        /* lines in read textfiles will always contain \n... */
        String[] lines = StringUtils.splitByWholeSeparator(text, "\n");
        if (offset == 0) {
            return 0;
        }
        int linePos = 0;
        for (int i = 0; i < lines.length; i++) {
            String line = lines[i];
            int ending = linePos + line.length() + 1;// +1 because of \n was
            // removed before
            if (offset >= linePos && offset <= ending) {
                return linePos;
            }
            linePos = ending + 1;
        }
        throw new TextProviderException("Cannot determine line offset for:" + offset);
    }

}