org.swisspush.reststorage.UrlParser Maven / Gradle / Ivy

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package org.swisspush.reststorage;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;


public class UrlParser {

    private static final Logger log = LoggerFactory.getLogger(UrlParser.class);

    public static RestStorageHandler.OffsetLimit offsetLimit(String offsetFromUrl, String limitFromUrl) {
        RestStorageHandler.OffsetLimit offsetValues = new RestStorageHandler.OffsetLimit(0, -1);
        if ((offsetFromUrl == null) && (limitFromUrl == null)) {
            return offsetValues;
        }
        int limit = -1;
        int offset = 0;
        if(offsetFromUrl != null) {
            try {
                offset = Integer.parseInt(offsetFromUrl);
                offset = Math.max(offset, 0);
            } catch (Exception e) {
                // do nothing here
            }
        }

        if(limitFromUrl != null) {
            try {
                limit = Integer.parseInt(limitFromUrl);
                limit = Math.max(limit, -1);
            } catch (Exception ex) {
                log.debug("TODO error handling", ex);
            }
        }
        
        offsetValues.offset = offset;
        offsetValues.limit = limit;
        return offsetValues;
    }

    static String path(String uri) {
        int i = uri.indexOf("://");
        if (i == -1) {
            i  = 0;
        } else {
            i  = uri.indexOf('/', i + 3);
            if (i == -1) {
                // contains no /
                return "/";
            }
        }

        int queryStart = uri.indexOf('?', i);
        if (queryStart == -1) {
            queryStart = uri.length();
        }
        return uri.substring(i, queryStart);
    }

    static String query(String uri) {
        int i = uri.indexOf('?');
        if (i == -1) {
            return null;
        } else {
            return uri.substring(i + 1 , uri.length());
        }
    }

}