content: /*
   * Licensed to the Apache Software Foundation (ASF) under one
   * or more contributor license agreements.  See the NOTICE file
   * distributed with this work for additional information
   * regarding copyright ownership.  The ASF licenses this file
   * to you under the Apache License, Version 2.0 (the
   * "License"); you may not use this file except in compliance
   * with the License.  You may obtain a copy of the License at
   *
   *     http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   */
  package com.datastax.oss.driver.internal.core.metadata.schema;
  
  import com.datastax.oss.driver.api.core.CqlIdentifier;
  import com.datastax.oss.driver.api.core.metadata.schema.Describable;
  import com.datastax.oss.driver.shaded.guava.common.base.Strings;
  import java.util.function.Consumer;
  import net.jcip.annotations.NotThreadSafe;
  
  /**
   * A simple builder that is used internally for the queries of {@link Describable} schema elements.
   */
  @NotThreadSafe
  public class ScriptBuilder {
    private static final int INDENT_SIZE = 4;
  
    private final boolean pretty;
    private final StringBuilder builder = new StringBuilder();
    private int indent;
    private boolean isAtLineStart;
    private boolean isFirstOption = true;
  
    public ScriptBuilder(boolean pretty) {
      this.pretty = pretty;
    }
  
    public ScriptBuilder append(String s) {
      if (pretty && isAtLineStart && indent > 0) {
        builder.append(Strings.repeat(" ", indent * INDENT_SIZE));
      }
      isAtLineStart = false;
      builder.append(s);
      return this;
    }
  
    public ScriptBuilder append(CqlIdentifier id) {
      append(id.asCql(pretty));
      return this;
    }
  
    public ScriptBuilder newLine() {
      if (pretty) {
        builder.append('\n');
      } else {
        builder.append(' ');
      }
      isAtLineStart = true;
      return this;
    }
  
    public ScriptBuilder forceNewLine(int count) {
      builder.append(Strings.repeat("\n", count));
      isAtLineStart = true;
      return this;
    }
  
    public ScriptBuilder increaseIndent() {
      indent += 1;
      return this;
    }
  
    public ScriptBuilder decreaseIndent() {
      if (indent > 0) {
        indent -= 1;
      }
      return this;
    }
  
    /** Appends "WITH " the first time it's called, then "AND " the next times. */
    public ScriptBuilder andWith() {
      if (isFirstOption) {
        append(" WITH ");
        isFirstOption = false;
      } else {
        newLine();
        append("AND ");
      }
      return this;
    }
  
    public <E> ScriptBuilder forEach(Iterable<E> iterable, Consumer<E> action) {
      for (E e : iterable) {
        action.accept(e);
      }
      return this;
    }
  
    public String build() {
      return builder.toString();
    }
  }
  