io.github.astrapi69.file.modify.DeleteLinesByIndexInFile Maven / Gradle / Ivy
/**
* The MIT License
*
* Copyright (C) 2015 Asterios Raptis
*
* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sublicense, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
* LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
* OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
package io.github.astrapi69.file.modify;
import java.util.List;
import io.github.astrapi69.file.modify.api.FileChangeable;
/**
* The class {@link DeleteLinesByIndexInFile} implements the {@link FileChangeable} interface to
* delete specific lines in a file based on a list of line indexes.
*/
public class DeleteLinesByIndexInFile implements FileChangeable
{
private final List lineIndexesToDelete;
/**
* Instantiates a new {@link DeleteLinesByIndexInFile} with the given list of line indexes to
* delete
*
* @param lineIndexesToDelete
* the line indexes to delete
*/
public DeleteLinesByIndexInFile(final List lineIndexesToDelete)
{
this.lineIndexesToDelete = lineIndexesToDelete;
}
/**
* Applies the deletion logic to the specified line. If the current line index is in the list of
* indexes to delete, the method returns null, indicating that this line should be skipped.
* Otherwise, it returns the line with a newline character.
*
* @param lineIndex
* the index of the current line
* @param line
* the content of the current line
* @return the modified line, or null if the line should be deleted
*/
@Override
public String apply(Integer lineIndex, String line)
{
// If the current line index is in the list of indexes to delete, return null
if (lineIndexesToDelete.contains(lineIndex))
{
return null;
}
return line + System.lineSeparator();
}
}
© 2015 - 2025 Weber Informatics LLC | Privacy Policy