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/* TypeBuilder.java --

   Copyright (C) 2006  Free Software Foundation, Inc.

This file is part of GNU Classpath.

GNU Classpath is free software; you can redistribute it and/or modify

it under the terms of the GNU General Public License as published by

the Free Software Foundation; either version 2, or (at your option)

any later version.

GNU Classpath is distributed in the hope that it will be useful, but

WITHOUT ANY WARRANTY; without even the implied warranty of

MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

General Public License for more details.

You should have received a copy of the GNU General Public License

along with GNU Classpath; see the file COPYING.  If not, write to the

Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA

02110-1301 USA.

Linking this library statically or dynamically with other modules is

making a combined work based on this library.  Thus, the terms and

conditions of the GNU General Public License cover the whole

combination.

As a special exception, the copyright holders of this library give you

permission to link this library with independent modules to produce an

executable, regardless of the license terms of these independent

modules, and to copy and distribute the resulting executable under

terms of your choice, provided that you also meet, for each linked

independent module, the terms and conditions of the license of that

module.  An independent module is a module which is not derived from

or based on this library.  If you modify this library, you may extend

this exception to your version of the library, but you are not

obligated to do so.  If you do not wish to do so, delete this

exception statement from your version. */

package gnu.xml.validation.datatype;

import java.util.LinkedHashSet;

import java.util.regex.Pattern;

import org.relaxng.datatype.Datatype;

import org.relaxng.datatype.DatatypeBuilder;

import org.relaxng.datatype.DatatypeException;

import org.relaxng.datatype.ValidationContext;

/**

 * Datatype builder.

 *

 * @author <a href='mailto:dog@gnu.org'>Chris Burdess</a>

 */

public class TypeBuilder

  implements DatatypeBuilder

{

  final SimpleType type;

  TypeBuilder(SimpleType type)

  {

    this.type = type;

    // TODO fundamental facets

    type.facets = new LinkedHashSet();

  }

  public void addParameter(String name, String value, ValidationContext context)

    throws DatatypeException

  {

    // TODO fundamental facets

    if ("length".equals(name))

      type.facets.add(parseLengthFacet(value));

    else if ("minLength".equals(name))

      type.facets.add(parseMinLengthFacet(value));

    else if ("maxLength".equals(name))

      type.facets.add(parseMaxLengthFacet(value));

    else if ("pattern".equals(name))

      type.facets.add(parsePatternFacet(value));

    else if ("enumeration".equals(name))

      type.facets.add(parseEnumerationFacet(value));

    else if ("whiteSpace".equals(name))

      type.facets.add(parseWhiteSpaceFacet(value));

    else if ("maxInclusive".equals(name))

      type.facets.add(parseMaxInclusiveFacet(value, context));

    else if ("maxExclusive".equals(name))

      type.facets.add(parseMaxExclusiveFacet(value, context));

    else if ("minExclusive".equals(name))

      type.facets.add(parseMinExclusiveFacet(value, context));

    else if ("minInclusive".equals(name))

      type.facets.add(parseMinInclusiveFacet(value, context));

    else if ("totalDigits".equals(name))

      type.facets.add(parseTotalDigitsFacet(value));

    else if ("fractionDigits".equals(name))

      type.facets.add(parseFractionDigitsFacet(value));

  }

  LengthFacet parseLengthFacet(String value)

    throws DatatypeException

  {

    int si = value.indexOf(' ');

    boolean fixed = false;

    if (si != -1)

      {

        if (!"FIXED".equalsIgnoreCase(value.substring(si + 1)))

          throw new DatatypeException("second argument must be FIXED if present");

        fixed = true;

        value = value.substring(0, si);

      }

    return new LengthFacet(Integer.parseInt(value), fixed, null);

  }

  MinLengthFacet parseMinLengthFacet(String value)

    throws DatatypeException

  {

    int si = value.indexOf(' ');

    boolean fixed = false;

    if (si != -1)

      {

        if (!"FIXED".equalsIgnoreCase(value.substring(si + 1)))

          throw new DatatypeException("second argument must be FIXED if present");

        fixed = true;

        value = value.substring(0, si);

      }

    return new MinLengthFacet(Integer.parseInt(value), fixed, null);

  }

  MaxLengthFacet parseMaxLengthFacet(String value)

    throws DatatypeException

  {

    int si = value.indexOf(' ');

    boolean fixed = false;

    if (si != -1)

      {

        if (!"FIXED".equalsIgnoreCase(value.substring(si + 1)))

          throw new DatatypeException("second argument must be FIXED if present");

        fixed = true;

        value = value.substring(0, si);

      }

    return new MaxLengthFacet(Integer.parseInt(value), fixed, null);

  }

  PatternFacet parsePatternFacet(String value)

    throws DatatypeException

  {

    return new PatternFacet(Pattern.compile(value), null);

  }

  EnumerationFacet parseEnumerationFacet(String value)

    throws DatatypeException

  {

    return new EnumerationFacet(value, null);

  }

  WhiteSpaceFacet parseWhiteSpaceFacet(String value)

    throws DatatypeException

  {

    int si = value.indexOf(' ');

    boolean fixed = false;

    if (si != -1)

      {

        if (!"FIXED".equalsIgnoreCase(value.substring(si + 1)))

          throw new DatatypeException("second argument must be FIXED if present");

        fixed = true;

        value = value.substring(0, si);

      }

    if ("preserve".equals(value))

      return new WhiteSpaceFacet(WhiteSpaceFacet.PRESERVE, fixed, null);

    if ("replace".equals(value))

      return new WhiteSpaceFacet(WhiteSpaceFacet.REPLACE, fixed, null);

    if ("collapse".equals(value))

      return new WhiteSpaceFacet(WhiteSpaceFacet.COLLAPSE, fixed, null);

    throw new DatatypeException("argument must be preserve, replace, or collapse");

  }

  MaxInclusiveFacet parseMaxInclusiveFacet(String value,

                                           ValidationContext context)

    throws DatatypeException

  {

    int si = value.indexOf(' ');

    boolean fixed = false;

    if (si != -1)

      {

        if (!"FIXED".equalsIgnoreCase(value.substring(si + 1)))

          throw new DatatypeException("second argument must be FIXED if present");

        fixed = true;

        value = value.substring(0, si);

      }

    return new MaxInclusiveFacet(type.createValue(value, context), fixed, null);

  }

  MaxExclusiveFacet parseMaxExclusiveFacet(String value,

                                           ValidationContext context)

    throws DatatypeException

  {

    int si = value.indexOf(' ');

    boolean fixed = false;

    if (si != -1)

      {

        if (!"FIXED".equalsIgnoreCase(value.substring(si + 1)))

          throw new DatatypeException("second argument must be FIXED if present");

        fixed = true;

        value = value.substring(0, si);

      }

    return new MaxExclusiveFacet(type.createValue(value, context), fixed, null);

  }

  MinExclusiveFacet parseMinExclusiveFacet(String value,

                                           ValidationContext context)

    throws DatatypeException

  {

    int si = value.indexOf(' ');

    boolean fixed = false;

    if (si != -1)

      {

        if (!"FIXED".equalsIgnoreCase(value.substring(si + 1)))

          throw new DatatypeException("second argument must be FIXED if present");

        fixed = true;

        value = value.substring(0, si);

      }

    return new MinExclusiveFacet(type.createValue(value, context), fixed, null);

  }

  MinInclusiveFacet parseMinInclusiveFacet(String value,

                                           ValidationContext context)

    throws DatatypeException

  {

    int si = value.indexOf(' ');

    boolean fixed = false;

    if (si != -1)

      {

        if (!"FIXED".equalsIgnoreCase(value.substring(si + 1)))

          throw new DatatypeException("second argument must be FIXED if present");

        fixed = true;

        value = value.substring(0, si);

      }

    return new MinInclusiveFacet(type.createValue(value, context), fixed, null);

  }

  TotalDigitsFacet parseTotalDigitsFacet(String value)

    throws DatatypeException

  {

    int si = value.indexOf(' ');

    boolean fixed = false;

    if (si != -1)

      {

        if (!"FIXED".equalsIgnoreCase(value.substring(si + 1)))

          throw new DatatypeException("second argument must be FIXED if present");

        fixed = true;

        value = value.substring(0, si);

      }

    int val = Integer.parseInt(value);

    if (val < 0)

      throw new DatatypeException("value must be a positiveInteger");

    return new TotalDigitsFacet(val, fixed, null);

  }

  FractionDigitsFacet parseFractionDigitsFacet(String value)

    throws DatatypeException

  {

    int si = value.indexOf(' ');

    boolean fixed = false;

    if (si != -1)

      {

        if (!"FIXED".equalsIgnoreCase(value.substring(si + 1)))

          throw new DatatypeException("second argument must be FIXED if present");

        fixed = true;

        value = value.substring(0, si);

      }

    int val = Integer.parseInt(value);

    if (val < 0)

      throw new DatatypeException("value must be a positiveInteger");

    return new FractionDigitsFacet(val, fixed, null);

  }

  public Datatype createDatatype()

  {

    return type;

  }

}