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Code Issues Releases Wiki Activity

Expression: replace message structure by function

This commit is contained in:
M66B 2024-04-18 07:45:36 +02:00
parent 538a630c31
commit 31401f9fd2
2 changed files with 46 additions and 42 deletions
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85
app/src/main/java/eu/faircode/email/EntityRule.java
View File

@ -170,7 +170,7 @@ public class EntityRule {
private static final int URL_TIMEOUT = 15 * 1000; // milliseconds
private static final List<String> EXPR_VARIABLES = Collections.unmodifiableList(Arrays.asList(
"to", "from", "subject", "text", "message"
"to", "from", "subject", "text"
));
static boolean needsHeaders(EntityMessage message, List<EntityRule> rules) {
@ -500,18 +500,14 @@ public class EntityRule {
// Expression
Expression expression = getExpression(this, message, headers, html, context);
if (expression != null) {
SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(context);
boolean experiments = prefs.getBoolean("experiments", false);
if (experiments) {
if (needsHeaders(expression) && headers == null && message.headers == null)
throw new IllegalArgumentException(context.getString(R.string.title_rule_no_headers));
if (needsHeaders(expression) && headers == null && message.headers == null)
throw new IllegalArgumentException(context.getString(R.string.title_rule_no_headers));
Log.i("EXPR evaluating='" + jcondition.getString("expression") + "'");
Boolean result = expression.evaluate().getBooleanValue();
Log.i("EXPR evaluated=" + result);
if (!Boolean.TRUE.equals(result))
return false;
}
Log.i("EXPR evaluating='" + jcondition.getString("expression") + "'");
Boolean result = expression.evaluate().getBooleanValue();
Log.i("EXPR evaluated=" + result);
if (!Boolean.TRUE.equals(result))
return false;
}
// Safeguard
@ -670,6 +666,37 @@ public class EntityRule {
}
}
@FunctionParameter(name = "value")
public static class MessageFunction extends AbstractFunction {
private EntityMessage message;
MessageFunction(EntityMessage message) {
this.message = message;
}
@Override
public EvaluationValue evaluate(
Expression expression, Token functionToken, EvaluationValue... parameterValues) {
List<Object> result = new ArrayList<>();
String name = parameterValues[0].getStringValue();
if (name != null && message != null)
try {
Field field = message.getClass().getField(name);
if (field != null) {
field.setAccessible(true);
Object value = field.get(message);
Log.i("EXPR message " + name + "=" + value);
if (value != null)
result.add(value);
}
} catch (Throwable ex) {
Log.e(ex);
}
return new EvaluationValue(result, ExpressionConfiguration.defaultConfiguration());
}
}
@InfixOperator(precedence = OPERATOR_PRECEDENCE_COMPARISON)
public static class ContainsOperator extends AbstractOperator {
private boolean regex;
@ -737,34 +764,11 @@ public class EntityRule {
headers = Collections.list(new InternetHeaders(bis, true).getAllHeaders());
}
Map<String, Object> props = new HashMap<>();
if (message != null) {
for (Field field : message.getClass().getDeclaredFields())
try {
int modifiers = field.getModifiers();
if (!Modifier.isPublic(modifiers) || Modifier.isStatic(modifiers))
continue;
Class<?> type = field.getType();
if (type.isArray())
continue;
if (type.isPrimitive() ||
Boolean.class.isAssignableFrom(type) ||
Integer.class.isAssignableFrom(type) ||
Long.class.isAssignableFrom(type) ||
String.class.isAssignableFrom(type)) {
field.setAccessible(true);
Object value = field.get(message);
props.put(field.getName(), value);
} else
Log.i("EXPR skipping non primitive=" + field.getName());
} catch (Throwable ex) {
Log.w(ex);
}
}
ExpressionConfiguration configuration = ExpressionConfiguration.defaultConfiguration();
configuration.getFunctionDictionary().addFunction("Header",
new HeaderFunction(headers));
configuration.getFunctionDictionary().addFunction("Message",
new MessageFunction(message));
configuration.getOperatorDictionary().addOperator("Contains",
new ContainsOperator(false));
configuration.getOperatorDictionary().addOperator("Matches",
@ -774,17 +778,16 @@ public class EntityRule {
.with("to", to)
.with("from", from)
.with("subject", message == null ? null : Arrays.asList(message.subject))
.with("text", doc == null ? null : Arrays.asList(doc.text()))
.with("message", props);
.with("text", doc == null ? null : Arrays.asList(doc.text()));
if (message != null) {
boolean hasAttachments = false;
for (String variable : expression.getUsedVariables())
if (!hasAttachments && "attachments".equals(variable)) {
if (!hasAttachments && "hasAttachments".equals(variable)) {
hasAttachments = true;
DB db = DB.getInstance(context);
List<EntityAttachment> attachments = db.attachment().getAttachments(message.id);
expression.with("attachments", attachments == null ? 0 : attachments.size());
expression.with("hasAttachments", attachments != null && !attachments.isEmpty());
}
}

3
app/src/main/res/layout/fragment_rule.xml
View File

@ -853,9 +853,10 @@
android:id="@+id/etExpression"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:fontFamily="monospace"
android:hint="@string/title_optional"
android:importantForAutofill="no"
android:textAppearance="@style/TextAppearance.AppCompat.Medium"
android:textAppearance="@style/TextAppearance.AppCompat.Small"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="@id/tvExpression" />