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Code Issues Releases Wiki Activity

Basic implementation of structured emails

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M66B 2023-11-27 17:50:47 +01:00
parent 14af92def0
commit cb9ff03584
1 changed files with 54 additions and 2 deletions
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56
app/src/main/java/eu/faircode/email/StructuredEmail.java
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@ -19,25 +19,77 @@ package eu.faircode.email;
Copyright 2018-2023 by Marcel Bokhorst (M66B)
*/
import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;
import org.jsoup.nodes.Document;
import java.util.Iterator;
// https://structured.email/content/introduction/getting_started.html
// https://schema.org/FlightReservation
public class StructuredEmail {
private JSONObject jroot;
private final JSONObject jroot;
public StructuredEmail(String json) throws JSONException {
jroot = new JSONObject(json);
}
public String getHtml() throws JSONException {
StringBuilder sb = new StringBuilder();
getHtml(jroot, 0, sb);
Document d = Document.createShell("");
d.appendElement("pre")
.attr("style", "font-size: smaller !important;")
.text(jroot.toString(2));
.text(sb.toString());
return d.html();
}
private void getHtml(Object obj, int indent, StringBuilder sb) throws JSONException {
if (obj instanceof JSONObject) {
JSONObject jobject = (JSONObject) obj;
Iterator<String> keys = jobject.keys();
while (keys.hasNext()) {
String key = keys.next();
if (key == null || key.startsWith("@"))
continue;
Object v = (jobject.isNull(key) ? "" : jobject.get(key));
if (v instanceof JSONObject || v instanceof JSONArray) {
sb.append(split(key))
.append(':')
.append('\n');
getHtml(v, indent + 1, sb);
} else
sb.append(indent(indent))
.append(split(key))
.append(": ")
.append(v)
.append('\n');
}
} else if (obj instanceof JSONArray) {
JSONArray jarray = (JSONArray) obj;
for (int i = 0; i < jarray.length(); i++)
getHtml(jarray.get(i), indent + 1, sb);
}
}
private String split(String key) {
StringBuilder sb = new StringBuilder();
for (int i = 0; i < key.length(); i++) {
char kar = key.charAt(i);
if (Character.isUpperCase(kar))
sb.append(' ').append(Character.toLowerCase(kar));
else
sb.append(kar);
}
return sb.toString();
}
private String indent(int count) {
StringBuilder sb = new StringBuilder();
for (int i = 0; i < count; i++)
sb.append(" ");
return sb.toString();
}
}