001package org.hl7.fhir.r5.elementmodel;
002
003import java.io.ByteArrayInputStream;
004
005/*
006  Copyright (c) 2011+, HL7, Inc.
007  All rights reserved.
008
009  Redistribution and use in source and binary forms, with or without modification, 
010  are permitted provided that the following conditions are met:
011
012 * Redistributions of source code must retain the above copyright notice, this 
013     list of conditions and the following disclaimer.
014 * Redistributions in binary form must reproduce the above copyright notice, 
015     this list of conditions and the following disclaimer in the documentation 
016     and/or other materials provided with the distribution.
017 * Neither the name of HL7 nor the names of its contributors may be used to 
018     endorse or promote products derived from this software without specific 
019     prior written permission.
020
021  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND 
022  ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 
023  WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 
024  IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, 
025  INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 
026  NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 
027  PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 
028  WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 
029  ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 
030  POSSIBILITY OF SUCH DAMAGE.
031
032 */
033
034import java.io.IOException;
035import java.io.InputStream;
036import java.io.OutputStream;
037import java.nio.charset.StandardCharsets;
038import java.util.ArrayList;
039import java.util.List;
040
041import org.hl7.fhir.exceptions.FHIRException;
042import org.hl7.fhir.r5.conformance.profile.ProfileUtilities;
043import org.hl7.fhir.r5.context.IWorkerContext;
044import org.hl7.fhir.r5.formats.IParser.OutputStyle;
045import org.hl7.fhir.r5.formats.JsonCreator;
046import org.hl7.fhir.utilities.FileUtilities;
047import org.hl7.fhir.utilities.MarkedToMoveToAdjunctPackage;
048import org.hl7.fhir.utilities.Utilities;
049import org.hl7.fhir.utilities.i18n.I18nConstants;
050import org.hl7.fhir.utilities.validation.ValidationMessage;
051import org.hl7.fhir.utilities.validation.ValidationMessage.IssueSeverity;
052import org.hl7.fhir.utilities.validation.ValidationMessage.IssueType;
053
054
055@MarkedToMoveToAdjunctPackage
056public class NDJsonParser extends ParserBase {
057
058  public NDJsonParser(IWorkerContext context, ProfileUtilities utilities) {
059    super(context, utilities);
060  }
061
062  public NDJsonParser(IWorkerContext context) {
063    super(context);
064  }
065  
066  private ValidatedFragment processLine(int lineCount, String line) throws FHIRException, IOException {
067    List<ValidatedFragment> list = new JsonParser(context).parse(new ByteArrayInputStream(line.getBytes(StandardCharsets.UTF_8)), lineCount);
068    return list.get(0);
069  }
070
071  @Override
072  public List<ValidatedFragment> parse(InputStream inStream) throws IOException, FHIRException {
073    String source = FileUtilities.streamToString(inStream);
074    int length = source.length();
075    int start = 0;
076    int cursor = start;
077    int lineCount = 0;
078
079    List<ValidatedFragment> res = new ArrayList<>();
080    while (cursor < length) {
081      while (cursor < length && source.charAt(cursor) != '\n') {
082        cursor++;
083      }
084      if (cursor < length) {
085        String line = source.substring(start, cursor);
086        if (line.endsWith("\r")) {
087          line = line.substring(0, line.length()-1);
088        }
089        if (Utilities.noString(line.trim())) {
090          ValidatedFragment vf = new ValidatedFragment(ValidatedFragment.ITEM_NAME, null, null, false);
091          logError(vf.getErrors(), "2024-06-30", lineCount+1, 1, null, IssueType.INFORMATIONAL, context.formatMessage(I18nConstants.NDJSON_EMPTY_LINE_WARNING), IssueSeverity.WARNING);
092          res.add(vf);
093        } else {
094          res.add(processLine(lineCount, line));
095        }
096        start = cursor+1;
097      } else if (cursor > start) {
098        String line = source.substring(start, cursor);
099        if (line.endsWith("\r")) {
100          line = line.substring(0, line.length()-1);
101        }
102        if (Utilities.noString(line.trim())) {
103          ValidatedFragment vf = new ValidatedFragment(ValidatedFragment.ITEM_NAME, null, null, false);
104          logError(vf.getErrors(), "2024-06-30", lineCount+1, 1, null, IssueType.INFORMATIONAL, context.formatMessage(I18nConstants.NDJSON_EMPTY_LINE_WARNING), IssueSeverity.WARNING);
105          res.add(vf);
106        } else {
107          res.add(processLine(lineCount, line));
108        }
109        start = cursor+1;
110      }
111      lineCount++;
112      cursor++;
113    }
114    return res;
115  }
116  
117  @Override
118  public void compose(Element e, OutputStream stream, OutputStyle style, String identity) throws FHIRException, IOException {
119    throw new Error("Not done yet");
120  }
121
122}