more work on WHO language support ($1592)

org.hl7.fhir.r5/src/main/java/org/hl7/fhir/r5/elementmodel/LanguageUtils.java

@@ -23,6 +23,7 @@ import org.hl7.fhir.r5.model.Resource;
 import org.hl7.fhir.r5.model.StringType;
 import org.hl7.fhir.r5.model.StructureDefinition;
 import org.hl7.fhir.r5.terminologies.CodeSystemUtilities;
+import org.hl7.fhir.r5.utils.ToolingExtensions;
 import org.hl7.fhir.utilities.TextFile;
 import org.hl7.fhir.utilities.Utilities;
 import org.hl7.fhir.utilities.i18n.AcceptLanguageHeader;
@@ -507,5 +508,22 @@ public class LanguageUtils {
     }
     return null;
   }
-  
+ 
+  public static boolean switchLanguage(Element e, String lang) {
+    if (e.getProperty().isTranslatable()) {
+      String cnt = getTranslation(e, lang);
+      e.removeExtension(ToolingExtensions.EXT_TRANSLATION);
+      if (cnt != null) {
+        e.setValue(cnt);
+      }
+    }
+    if (e.hasChildren()) {
+      for (Element c : e.getChildren()) {
+        if (!switchLanguage(c, lang)) {
+          return false;
+        }
+      }
+    }
+    return true;
+  }
 }

org.hl7.fhir.r5/src/main/java/org/hl7/fhir/r5/renderers/PatientRenderer.java

@@ -338,7 +338,7 @@ public class PatientRenderer extends ResourceRenderer {
         }
         if (!anyComplex) {
           XhtmlNode tr = tbl.tr();
-          nameCell(tr, sd.getTitle()+":", sd.getDescription(), sd.getWebPath());
+          nameCell(tr, getContext().getTranslated(sd.getTitleElement()), sd.getDescription(), sd.getWebPath());
           XhtmlNode td = tr.td();
           td.colspan("3");
           if (list.size() == 1) {

org.hl7.fhir.utilities/src/main/java/org/hl7/fhir/utilities/i18n/LanguageTag.java

@@ -0,0 +1,129 @@
+package org.hl7.fhir.utilities.i18n;
+
+import java.util.ArrayList;
+import java.util.List;
+
+import org.hl7.fhir.exceptions.FHIRException;
+import org.hl7.fhir.utilities.CommaSeparatedStringBuilder;
+import org.hl7.fhir.utilities.Utilities;
+import org.hl7.fhir.utilities.i18n.subtag.LanguageSubtagRegistry;
+
+public class LanguageTag {
+
+  private String code;
+  private String language;
+  private String script;
+  private String region;
+  private String variant;
+  private String extension;
+  private List<String> extLang;
+  private List<String> privateUse;
+  private LanguageSubtagRegistry registry;
+
+  public LanguageTag(LanguageSubtagRegistry registry, String code) {
+    this.registry = registry;
+    this.code = code;
+
+    if (!Utilities.noString(code)) {
+      String[] parts = code.split("\\-");
+      int c = 0;
+      int t = parts.length;
+      if (!registry.hasLanguage(parts[c])) {
+        throw new FHIRException("Invalid Language code '"+parts[c]+'"');
+      } else {
+        language = parts[c];
+        c++;
+        for (int i = 1; i <= 3; i++) {
+          if (c < t && registry.hasExtLanguage(parts[c])) {
+            if (extLang == null) {
+              extLang = new ArrayList<>();
+            }
+            extLang.add(parts[c]);
+            c++;
+          }        
+        }
+
+        if (c < t && registry.hasScript(parts[c])) {
+          script = parts[c];
+          c++;
+        }
+
+        if (c < t && registry.hasRegion(parts[c])) {
+          region = parts[c];
+          c++;
+        }
+        if (c < t && registry.hasVariant(parts[c])) {
+          variant = parts[c];
+          c++;
+        }
+        while (c < t && parts[c].startsWith("x")) {
+          if (privateUse == null) {
+            privateUse = new ArrayList<>();
+          }
+          privateUse.add(parts[c]);
+          c++;
+        }
+        if (c < t) {
+          throw new FHIRException( "Unable to recognise part "+(c+1)+" ('"+parts[c]+"') as a valid language part");
+        }
+
+      }                                  
+    }
+  }
+
+  public String getCode() {
+    return code;
+  }
+
+  public String getLanguage() {
+    return language;
+  }
+
+  public String getScript() {
+    return script;
+  }
+
+  public String getRegion() {
+    return region;
+  }
+
+  public String getVariant() {
+    return variant;
+  }
+
+  public String getExtension() {
+    return extension;
+  }
+
+  public List<String> getExtLang() {
+    return extLang;
+  }
+
+  public List<String> getPrivateUse() {
+    return privateUse;
+  }
+
+  public String present() {
+    StringBuilder b = new StringBuilder();
+    b.append(registry.getLanguage(language).getDisplay());
+    if (region != null) {
+      b.append("/");
+      b.append(registry.getRegion(region).getDisplay()); 
+    }
+    if (script != null || variant != null) {
+      CommaSeparatedStringBuilder cb = new CommaSeparatedStringBuilder();
+      if (script != null) {
+        cb.append("Script="+ registry.getScript(script).getDisplay());
+        if (variant != null) {
+          cb.append("Variant="+ registry.getVariant(variant).getDisplay());
+        }
+        b.append(" (");
+        b.append(cb.toString());
+        b.append(")");
+      }
+    }
+    return b.toString();
+
+  }
+
+}

org.hl7.fhir.utilities/src/main/java/org/hl7/fhir/utilities/i18n/subtag/LanguageSubtagRegistry.java

@@ -88,8 +88,29 @@ public class LanguageSubtagRegistry {
   public boolean containsVariant(String key) {
     return variants.containsKey(key);
   }
+  
   public VariantSubtag getVariant(String key) {
     return variants.get(key);
   }
+
+  public boolean hasLanguage(String subTag) {
+    return languages.containsKey(subTag);
+  }
+
+  public boolean hasExtLanguage(String subTag) {
+    return extLangs.containsKey(subTag);
+  }
+
+  public boolean hasScript(String subTag) {
+    return scripts.containsKey(subTag);
+  }
+
+  public boolean hasRegion(String subTag) {
+    return regions.containsKey(subTag);
+  }
+
+  public boolean hasVariant(String subTag) {
+    return variants.containsKey(subTag);
+  }
 }
 

org.hl7.fhir.utilities/src/main/java/org/hl7/fhir/utilities/i18n/subtag/Subtag.java

@@ -42,4 +42,12 @@ public abstract class Subtag {
   public List<String> getComments() {
     return List.copyOf(comments);
   }
+  
+  public String getDisplay() {
+    if (descriptions.size() == 0) {
+      return "";
+    } else {
+      return descriptions.get(0);
+    }
+  }
 }

org.hl7.fhir.utilities/src/main/java/org/hl7/fhir/utilities/json/model/JsonArray.java

@@ -145,5 +145,14 @@ public class JsonArray extends JsonElement implements Iterable<JsonElement> {
     items.remove(e);
     
   }
+
+  public boolean has(String key) {
+    for (JsonElement e : items) {
+      if (e.isJsonString() && key.equals(e.asString())) {
+        return true;
+      }
+    }
+    return false;
+  }
   
 }