help can now autocomplete what it shows help for

2 files changed, 19 insertions, 1 deletions

diff --git a/akonadi2_cli/syntax_modules/core_syntax.cpp b/akonadi2_cli/syntax_modules/core_syntax.cpp
index 407fcbf..ca5ac4c 100644
--- a/akonadi2_cli/syntax_modules/core_syntax.cpp
+++ b/akonadi2_cli/syntax_modules/core_syntax.cpp
@@ -31,7 +31,10 @@ Syntax::List syntax()
 {
     Syntax::List syntax;
     syntax << Syntax("exit", QObject::tr("Exits the application. Ctrl-d also works!"), &CoreSyntax::exit);
-    syntax << Syntax(QObject::tr("help"), QObject::tr("Print command information: help [command]"), &CoreSyntax::showHelp);
+
+    Syntax help(QObject::tr("help"), QObject::tr("Print command information: help [command]"), &CoreSyntax::showHelp);
+    help.completer = &CoreSyntax::showHelpCompleter;
+    syntax << help;
 
     Syntax set(QObject::tr("set"), QObject::tr("Sets settings for the session"));
     set.children << Syntax(QObject::tr("debug"), QObject::tr("Set the debug level from 0 to 6"), &CoreSyntax::setDebugLevel);
@@ -92,6 +95,20 @@ bool showHelp(const QStringList &commands, State &state)
     return true;
 }
 
+QStringList showHelpCompleter(const QStringList &commands, const QString &fragment)
+{
+    QStringList items;
+
+    for (auto syntax: SyntaxTree::self()->syntax()) {
+        if (fragment.isEmpty() || syntax.keyword.startsWith(fragment)) {
+            items << syntax.keyword;
+        }
+    }
+
+    qSort(items);
+    return items;
+}
+
 bool setDebugLevel(const QStringList &commands, State &state)
 {
     if (commands.count() != 1) {
diff --git a/akonadi2_cli/syntax_modules/core_syntax.h b/akonadi2_cli/syntax_modules/core_syntax.h
index 521cb8e..89187e5 100644
--- a/akonadi2_cli/syntax_modules/core_syntax.h
+++ b/akonadi2_cli/syntax_modules/core_syntax.h
@@ -26,6 +26,7 @@ namespace CoreSyntax
     Syntax::List syntax();
     bool exit(const QStringList &commands, State &state);
     bool showHelp(const QStringList &commands, State &state);
+    QStringList showHelpCompleter(const QStringList &commands, const QString &fragment);
     bool setDebugLevel(const QStringList &commands, State &state);
     bool printDebugLevel(const QStringList &commands, State &state);
 }