aiai.ai.utils.EnvProperty.java Source code

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Here is the source code for aiai.ai.utils.EnvProperty.java

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/*
 AiAi, Copyright (C) 2017 - 2018, Serge Maslyukov
    
 This program is free software: you can redistribute it and/or modify
 it under the terms of the GNU 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 Public License for more details.
    
 You should have received a copy of the GNU General Public License
 along with this program.  If not, see <https://www.gnu.org/licenses/>.
    
 */
package aiai.ai.utils;

import org.apache.commons.lang3.StringUtils;

import java.io.File;

public class EnvProperty {

    public static File getFile(String filename) {
        return new File(filename);
    }

    public static String strIfBlankThenNull(String prop) {
        if (StringUtils.isBlank(prop)) {
            return null;
        }
        return prop;
    }

    public static int minMax(String prop, int min, int max, Integer defForBlank) {
        if (StringUtils.isBlank(prop)) {
            if (defForBlank == null) {
                throw new IllegalStateException("prop and defForBlank both are null");
            }
            if (defForBlank > max || defForBlank < min) {
                throw new IllegalStateException(
                        "misconfiguration: min: " + min + ", max: " + max + ", def: " + defForBlank);
            }
            return defForBlank;
        }
        int i = Integer.parseInt(prop);
        if (i >= min && i <= max) {
            return i;
        } else if (i < min) {
            return min;
        }
        return max;
    }

    public static File toFile(String dirAsString) {
        if (StringUtils.isBlank(dirAsString)) {
            return null;
        }

        // special case for ./some-dir
        if (dirAsString.charAt(0) == '.' && (dirAsString.charAt(1) == '\\' || dirAsString.charAt(1) == '/')) {
            return new File(dirAsString.substring(2));
        }
        return new File(dirAsString);
    }
}