3 files changed, 48 insertions, 5 deletions

diff --git a/src/yuzu/configuration/configure_input_player.cpp b/src/yuzu/configuration/configure_input_player.cpp
index ab3512810..d5d624b96 100644
--- a/src/yuzu/configuration/configure_input_player.cpp
+++ b/src/yuzu/configuration/configure_input_player.cpp
@@ -1395,7 +1395,8 @@ void ConfigureInputPlayer::keyPressEvent(QKeyEvent* event) {
 
 void ConfigureInputPlayer::CreateProfile() {
     const auto profile_name =
-        LimitableInputDialog::GetText(this, tr("New Profile"), tr("Enter a profile name:"), 1, 20);
+        LimitableInputDialog::GetText(this, tr("New Profile"), tr("Enter a profile name:"), 1, 20,
+                                      LimitableInputDialog::InputLimiter::Filesystem);
 
     if (profile_name.isEmpty()) {
         return;
diff --git a/src/yuzu/util/limitable_input_dialog.cpp b/src/yuzu/util/limitable_input_dialog.cpp
index edd78e579..6fea41f95 100644
--- a/src/yuzu/util/limitable_input_dialog.cpp
+++ b/src/yuzu/util/limitable_input_dialog.cpp
@@ -21,11 +21,13 @@ void LimitableInputDialog::CreateUI() {
 
     text_label = new QLabel(this);
     text_entry = new QLineEdit(this);
+    text_label_invalid = new QLabel(this);
     buttons = new QDialogButtonBox(QDialogButtonBox::Ok | QDialogButtonBox::Cancel, this);
 
     auto* const layout = new QVBoxLayout;
     layout->addWidget(text_label);
     layout->addWidget(text_entry);
+    layout->addWidget(text_label_invalid);
     layout->addWidget(buttons);
 
     setLayout(layout);
@@ -37,18 +39,36 @@ void LimitableInputDialog::ConnectEvents() {
 }
 
 QString LimitableInputDialog::GetText(QWidget* parent, const QString& title, const QString& text,
-                                      int min_character_limit, int max_character_limit) {
+                                      int min_character_limit, int max_character_limit,
+                                      InputLimiter limit_type) {
     Q_ASSERT(min_character_limit <= max_character_limit);
 
     LimitableInputDialog dialog{parent};
     dialog.setWindowTitle(title);
     dialog.text_label->setText(text);
     dialog.text_entry->setMaxLength(max_character_limit);
+    dialog.text_label_invalid->show();
+
+    switch (limit_type) {
+    case InputLimiter::Filesystem:
+        dialog.invalid_characters = QStringLiteral("<>:;\"/\\|,.!?*");
+        break;
+    default:
+        dialog.invalid_characters.clear();
+        dialog.text_label_invalid->hide();
+        break;
+    }
+    dialog.text_label_invalid->setText(
+        tr("The text can't contain any of the following characters:\n%1")
+            .arg(dialog.invalid_characters));
 
     auto* const ok_button = dialog.buttons->button(QDialogButtonBox::Ok);
     ok_button->setEnabled(false);
-    connect(dialog.text_entry, &QLineEdit::textEdited, [&](const QString& new_text) {
-        ok_button->setEnabled(new_text.length() >= min_character_limit);
+    connect(dialog.text_entry, &QLineEdit::textEdited, [&] {
+        if (!dialog.invalid_characters.isEmpty()) {
+            dialog.RemoveInvalidCharacters();
+        }
+        ok_button->setEnabled(dialog.text_entry->text().length() >= min_character_limit);
     });
 
     if (dialog.exec() != QDialog::Accepted) {
@@ -57,3 +77,15 @@ QString LimitableInputDialog::GetText(QWidget* parent, const QString& title, con
 
     return dialog.text_entry->text();
 }
+
+void LimitableInputDialog::RemoveInvalidCharacters() {
+    auto cpos = text_entry->cursorPosition();
+    for (int i = 0; i < text_entry->text().length(); i++) {
+        if (invalid_characters.contains(text_entry->text().at(i))) {
+            text_entry->setText(text_entry->text().remove(i, 1));
+            i--;
+            cpos--;
+        }
+    }
+    text_entry->setCursorPosition(cpos);
+}
diff --git a/src/yuzu/util/limitable_input_dialog.h b/src/yuzu/util/limitable_input_dialog.h
index 164ad7301..a8e31098b 100644
--- a/src/yuzu/util/limitable_input_dialog.h
+++ b/src/yuzu/util/limitable_input_dialog.h
@@ -18,14 +18,24 @@ public:
     explicit LimitableInputDialog(QWidget* parent = nullptr);
     ~LimitableInputDialog() override;
 
+    enum class InputLimiter {
+        None,
+        Filesystem,
+    };
+
     static QString GetText(QWidget* parent, const QString& title, const QString& text,
-                           int min_character_limit, int max_character_limit);
+                           int min_character_limit, int max_character_limit,
+                           InputLimiter limit_type = InputLimiter::None);
 
 private:
     void CreateUI();
     void ConnectEvents();
 
+    void RemoveInvalidCharacters();
+    QString invalid_characters;
+
     QLabel* text_label;
     QLineEdit* text_entry;
+    QLabel* text_label_invalid;
     QDialogButtonBox* buttons;
 };