/**
* get the directory to store the link(ShellShortCut object) throws DirectoryException if it can't
* find the directory to store to link
*
* @param cmdArgs that contains user inputs and present work directory
* @return ShellDirectory where the ShellShortCut object will be stored.
*/
protected ShellDirectory getDirToStoreLink(String[] cmdArgs, ShellDirectory presentWorkDir)
throws DirectoryException {
String linkPath = getLinkPath(cmdArgs);
String dirPathToStoreLink = new String();
if (doesInputContainLinkName(cmdArgs, presentWorkDir)) {
if (linkPath.indexOf("/") != -1) {
dirPathToStoreLink = linkPath.substring(0, linkPath.lastIndexOf('/'));
} else {
dirPathToStoreLink = ".";
}
} else {
dirPathToStoreLink = linkPath;
}
ShellFile DirToStore = new ShellDirectory();
try {
DirToStore = DirectoryNavigator.getFile(dirPathToStoreLink, presentWorkDir);
} catch (DirectoryException e) {
throw new DirectoryException(String.format(notFoundMessage, linkPath, "file or directory"));
}
// if user gave an file instead of directory, (we can't store a link in it) throw the error.
if (DirToStore.getClass() == ShellFile.class || DirToStore.getClass() == ShellShortcut.class) {
throw new DirectoryException(String.format(fileExistsMessage, linkPath));
}
return (ShellDirectory) DirToStore;
}
/**
* check whether the target's path is valid or not
*
* @param targetpath and present work directory
* @return true if and only if the target's path is valid
*/
protected boolean isTargetValid(String targetPath, ShellDirectory pwd) {
return DirectoryNavigator.exists(targetPath, pwd);
}
/**
* check the link's path from the user input contains the name of the link will be created or just
* stating the directory to store the link
*
* @param cmdArgs that contains user input and present work directory
* @return true if and only if use input link's path contains the name of the link
*/
protected Boolean doesInputContainLinkName(String[] cmdArgs, ShellDirectory presentWorkDir) {
String linkPath = getLinkPath(cmdArgs);
if (DirectoryNavigator.exists(linkPath, presentWorkDir)) {
return false;
} else return true;
}