Java List Last Item buildPathFromComponentsUpToIndex(final List<String> pathComponents, final int lastIndex)

Description

Given a list of path components, as produced by the breakIRODSPathIntoComponents, re-create an iRODS absolute path by simply stringing together the path components with the iRODS '/' delimiter.

License

BSD License

Parameter

Parameter	Description
pathComponents	<code>List<String></code> with the iRODS path components.
lastIndex	<code>int</code>, set to -1 if there is no limit, that indicates the index of the last component to string together into the path

Return

String with an iRODS absolute path built from the given components.

Declaration

public static String buildPathFromComponentsUpToIndex(final List<String> pathComponents, final int lastIndex)

Method Source Code

//package com.java2s;
//License from project: BSD License 

import java.util.List;

public class Main {
    /**/*ww  w .  ja  va2  s  .co m*/
     * Given a list of path components, as produced by the
     * <code>breakIRODSPathIntoComponents</code>, re-create an iRODS absolute
     * path by simply stringing together the path components with the iRODS '/'
     * delimiter.
     *
     * @param pathComponents
     *            <code>List<String></code> with the iRODS path components.
     * @param lastIndex
     *            <code>int</code>, set to -1 if there is no limit, that
     *            indicates the index of the last component to string together
     *            into the path
     * @return <code>String</code> with an iRODS absolute path built from the
     *         given components.
     */
    public static String buildPathFromComponentsUpToIndex(final List<String> pathComponents, final int lastIndex) {

        if (pathComponents == null) {
            throw new IllegalArgumentException("null pathComponents");
        }

        StringBuilder sb = new StringBuilder();
        // keep track of how many components are processed
        int i = 0;
        for (String pathComponent : pathComponents) {

            // root path will be blank, so ignore, as slashes are already
            // appended
            if (!pathComponent.isEmpty()) {
                // if i've specified a limit to the path components, respect it
                if (lastIndex >= 0) {
                    if (i++ >= lastIndex) {
                        break;
                    }
                }
                sb.append("/");
                sb.append(pathComponent);
            }
        }

        // If I don't get a path, set it to root
        if (sb.length() == 0) {
            sb.append("/");
        }

        return sb.toString();
    }
}

Java List Last Item buildPathFromComponentsUpToIndex(final List pathComponents, final int lastIndex)