src/main/java/eu/svjatoslav/commons/commandline/parameterparser/parameter/DirectoryParameter.java

   1 package eu.svjatoslav.commons.commandline.parameterparser.parameter;
   2
   3 import java.io.File;
   4
   5 import eu.svjatoslav.commons.commandline.parameterparser.ArgumentCount;
   6 import eu.svjatoslav.commons.commandline.parameterparser.Parameter;
   7
   8 public class DirectoryParameter extends Parameter {
   9
  10         private ExistanceType existanceType = ExistanceType.DOES_NOT_MATTER;
  11
  12         public DirectoryParameter(final String description) {
  13                 super(description, ArgumentCount.SINGLE);
  14         }
  15
  16         @Override
  17         public DirectoryParameter addAliases(final String... aliasArray) {
  18                 super.addAliases(aliasArray);
  19                 return this;
  20         }
  21
  22         @Override
  23         public java.lang.String describeFormat() {
  24                 return existanceType.description + "directory";
  25         }
  26
  27         public File getValue() {
  28
  29                 if (arguments.size() != 1)
  30                         throw new RuntimeException("Parameter " + description
  31                                         + " shall have exactly 1 argument.");
  32
  33                 return new File(arguments.get(0));
  34         }
  35
  36         public DirectoryParameter mustExist() {
  37                 existanceType = ExistanceType.MUST_EXIST;
  38                 return this;
  39         }
  40
  41         public DirectoryParameter mustNotExist() {
  42                 existanceType = ExistanceType.MUST_NOT_EXIST;
  43                 return this;
  44         }
  45
  46         @Override
  47         public DirectoryParameter setMandatory() {
  48                 mandatory = true;
  49                 return this;
  50         }
  51
  52         @Override
  53         public boolean validate(final java.lang.String value) {
  54                 final File file = new File(value);
  55
  56                 if (existanceType == ExistanceType.MUST_EXIST) {
  57                         if (file.exists() && file.isDirectory())
  58                                 return true;
  59                         return false;
  60                 }
  61
  62                 if (existanceType == ExistanceType.MUST_NOT_EXIST) {
  63                         if (file.exists())
  64                                 return false;
  65                         return true;
  66                 }
  67
  68                 if (existanceType == ExistanceType.DOES_NOT_MATTER) {
  69                         if (file.exists())
  70                                 if (file.isFile())
  71                                         return false;
  72
  73                         return true;
  74                 }
  75
  76                 return false;
  77         }
  78
  79 }