zdm/envoy
zdm/envoy
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Added mechanism to check whether a raw text contains a command

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This commit is contained in:
delvh 2020-07-23 11:07:54 +02:00
parent 7bf35977f0
commit 38c57c997f
1 changed files with 69 additions and 9 deletions
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78
client/src/main/java/envoy/client/data/commands/SystemCommandsMap.java
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@ -26,6 +26,8 @@ public class SystemCommandsMap {
private final Pattern commandBounds = Pattern.compile("^[a-zA-Z0-9_:!\\(\\)\\?\\.\\,\\;\\-]+$");
private boolean commandExecuted = false;
/**
* Adds a command with according action and the number of arguments that should
* be parsed if the command does not violate API constrictions to the map.
@ -155,6 +157,46 @@ public class SystemCommandsMap {
return Optional.ofNullable(systemCommands.get(firstWord));
}
/**
* Takes a 'raw' string (the whole input) and checks if a command is present
* after a "/". If that is the case, it will be executed.
* <p>
* Only one system command can be present, afterwards checking will not be
* continued.
*
* @param raw the raw input string
* @since Envoy Client v0.1-beta
*/
public void checkForCommands(String raw) { checkForCommands(raw, 0); }
/**
* Takes a 'raw' string (the whole input) and checks from {@code fromIndex} on
* if a command is present
* after a "/". If that is the case, it will be executed.
* <p>
* Only one system command can be present, afterwards checking will not be
* continued.
*
* @param raw the raw input string
* @param fromIndex the index to start checking on
* @since Envoy Client v0.1-beta
*/
public void checkForCommands(String raw, int fromIndex) {
// The minimum length of a command is "/" + a letter, hence raw.length()-2 is
// the highest index needed
for (int i = fromIndex; i < raw.length() - 2; i++)
// possibly a command was detected
if (raw.charAt(i) == '/') {
//
executeIfPresent(raw.substring(i + 1));
// the command was executed successfully - no further checking needed
if (commandExecuted) {
commandExecuted = false;
break;
}
}
}
/**
* This method checks if the input String is a key in the map and executes the
* wrapped System command if present.
@ -165,11 +207,12 @@ public class SystemCommandsMap {
* <p>
* Usage example:<br>
* {@code SystemCommandsMap systemCommands = new SystemCommandsMap();}<br>
* {@code systemCommands.add("example", (words)-> &lt;Button&gt;.setText(words[0]), 1);}<br>
* {@code Button button = new Button();}<br>
* {@code systemCommands.add("example", (words)-> button.setText(words[0]), 1);}<br>
* {@code ....}<br>
* user input: {@code "/example xyz ..."}<br>
* {@code systemCommands.executeIfPresent("example xyz ...")}
* result: {@code <Button>.getText()=="xyz"}
* result: {@code button.getText()=="xyz"}
*
* @param input the input string given by the user, <b>excluding the "/"</b>
* @since Envoy Client v0.1-beta
@ -186,6 +229,7 @@ public class SystemCommandsMap {
// Executing the function
try {
systemCommand.getAction().apply(arguments);
commandExecuted = true;
} catch (final Exception e) {
EnvoyLog.getLogger(SystemCommandsMap.class).log(Level.WARNING, "The system command " +
// detected command
@ -195,18 +239,34 @@ public class SystemCommandsMap {
}
/**
* Retrieves the recommendations based on the current command entered (i.e the
* String "/exam" should be entered as "exam"). If none are present, nothing
* will be done.
* Otherwise the given function will be executed on the recommendations.
* Retrieves the recommendations based on the current input entered.<br>
* The first word is used for the recommendations and
* it does not matter if the "/" is at its beginning or not.<br>
* If none are present, nothing will be done.<br>
* Otherwise the given function will be executed on the recommendations.<br>
*
* @param input the String between "/" and " "
* @param input the input
* @param action the action that should be taken for the recommendations, if any
* are present
* @since Envoy Client v0.1-beta
*/
public void requestRecommendations(String input, Function<Set<String>, Void> action) {
final var partialCommand = input.substring(0, input.indexOf(" "));
public void requestRecommendations(String input, Function<Set<String>, Void> action) { requestRecommendations(input, 0, action); }
/**
* Retrieves the recommendations based on the current input entered.<br>
* The word beginning at {@code fromIndex} is used for the recommendations and
* it does not matter if the "/" is at its beginning or not.<br>
* If none are present, nothing will be done.<br>
* Otherwise the given function will be executed on the recommendations.<br>
*
* @param input the input
* @param fromIndex the index to start checking on
* @param action the action that should be taken for the recommendations, if
* any are present
* @since Envoy Client v0.1-beta
*/
private void requestRecommendations(String input, int fromIndex, Function<Set<String>, Void> action) {
final var partialCommand = input.substring(fromIndex + (input.charAt(fromIndex) == '/' ? 1 : 0), input.indexOf(" "));
// Get the expected commands
final var recommendations = recommendCommands(partialCommand);
if (recommendations.isEmpty()) return;