Moved input_character() template method to ui/utils.h, and changed menu_software_list::m_filename_buffer to be std::string

src/frontend/mame/ui/filecreate.cpp

@@ -15,6 +15,7 @@
 
 #include "ui/filecreate.h"
 #include "ui/ui.h"
+#include "ui/utils.h"
 
 #include "imagedev/floppy.h"
 
@@ -44,34 +45,6 @@ CONSTANTS
 MENU HELPERS
 ***************************************************************************/
 
-//-------------------------------------------------
-//  input_character - inputs a typed character
-//  into a buffer
-//-------------------------------------------------
-
-template <typename F>
-static void input_character(std::string &buffer, unicode_char unichar, F &&filter)
-{
-	auto buflen = buffer.size();
-
-	if ((unichar == 8) || (unichar == 0x7f))
-	{
-		// backspace
-		if (0 < buflen)
-		{
-			auto buffer_oldend = buffer.c_str() + buflen;
-			auto buffer_newend = utf8_previous_char(buffer_oldend);
-			buffer.resize(buffer_newend - buffer.c_str());
-		}
-	}
-	else if ((unichar >= ' ') && (!filter || filter(unichar)))
-	{
-		// append this character
-		buffer += utf8_from_uchar(unichar);
-	}
-}
-
-
 /***************************************************************************
 CONFIRM SAVE AS MENU
 ***************************************************************************/

src/frontend/mame/ui/swlist.cpp

@@ -12,6 +12,7 @@
 
 #include "ui/ui.h"
 #include "ui/swlist.h"
+#include "ui/utils.h"
 
 #include "softlist.h"
 
@@ -29,6 +30,18 @@ namespace ui {
     SOFTWARE PARTS
 ***************************************************************************/
 
+//-------------------------------------------------
+//  is_valid_softlist_part_char - returns whether
+//	this character is a valid char for a softlist
+//	part
+//-------------------------------------------------
+
+static bool is_valid_softlist_part_char(unicode_char ch)
+{
+	return (ch == (char)ch) && isalnum(ch);
+}
+
+
 //-------------------------------------------------
 //  ctor
 //-------------------------------------------------
@@ -233,7 +246,7 @@ void menu_software_list::handle()
 			m_ordered_by_shortname = !m_ordered_by_shortname;
 
 			// reset the char buffer if we change ordering criterion
-			memset(m_filename_buffer, '\0', ARRAY_LENGTH(m_filename_buffer));
+			m_filename_buffer.clear();
 
 			// reload the menu with the new order
 			reset(reset_options::REMEMBER_REF);
@@ -248,33 +261,11 @@ void menu_software_list::handle()
 		}
 		else if (event->iptkey == IPT_SPECIAL)
 		{
-			auto const buflen = std::strlen(m_filename_buffer);
+			if (input_character(m_filename_buffer, event->unichar, &is_valid_softlist_part_char))
-			bool update_selected = false;
-
-			if ((event->unichar == 8) || (event->unichar == 0x7f))
 			{
-				// if it's a backspace and we can handle it, do so
+				// display the popup
-				if (0 < buflen)
-				{
-					*const_cast<char *>(utf8_previous_char(&m_filename_buffer[buflen])) = 0;
-					update_selected = true;
-
 				ui().popup_time(ERROR_MESSAGE_TIME, "%s", m_filename_buffer);
-				}
-			}
-			else if (event->is_char_printable())
-			{
-				// if it's any other key and we're not maxed out, update
-				if (event->append_char(m_filename_buffer, buflen))
-				{
-					update_selected = true;
 
-					ui().popup_time(ERROR_MESSAGE_TIME, "%s", m_filename_buffer);
-				}
-			}
-
-			if (update_selected)
-			{
 				// identify the selected entry
 				entry_info const *const cur_selected = (FPTR(event->itemref) != 1)
 						? reinterpret_cast<entry_info const *>(get_selection_ref())
@@ -289,9 +280,9 @@ void menu_software_list::handle()
 						auto &compare_name = m_ordered_by_shortname ? entry.short_name : entry.long_name;
 
 						int match = 0;
-						for (int i = 0; i < ARRAY_LENGTH(m_filename_buffer); i++)
+						for (int i = 0; i < m_filename_buffer.length(); i++)
 						{
-							if (core_strnicmp(compare_name.c_str(), m_filename_buffer, i) == 0)
+							if (core_strnicmp(compare_name.c_str(), m_filename_buffer.c_str(), i) == 0)
 								match = i;
 						}
 
@@ -313,8 +304,7 @@ void menu_software_list::handle()
 		else if (event->iptkey == IPT_UI_CANCEL)
 		{
 			// reset the char buffer also in this case
-			if (m_filename_buffer[0] != '\0')
+			m_filename_buffer.clear();
-				memset(m_filename_buffer, '\0', ARRAY_LENGTH(m_filename_buffer));
 			m_result = m_filename_buffer;
 			stack_pop();
 		}

src/frontend/mame/ui/swlist.h

@@ -78,7 +78,7 @@ private:
 	const char *                    m_interface;
 	std::string &                   m_result;
 	std::list<entry_info>           m_entrylist;
-	char                            m_filename_buffer[1024];
+	std::string                     m_filename_buffer;
 	bool                            m_ordered_by_shortname;
 
 	// functions

src/frontend/mame/ui/utils.h

@@ -13,6 +13,8 @@
 #ifndef __UI_UTILS_H__
 #define __UI_UTILS_H__
 
+#include "unicode.h"
+
 #define MAX_CHAR_INFO            256
 #define MAX_CUST_FILTER          8
 
@@ -249,4 +251,37 @@ const char* strensure(const char* s);
 int getprecisionchr(const char* s);
 std::vector<std::string> tokenize(const std::string &text, char sep);
 
+
+//-------------------------------------------------
+//  input_character - inputs a typed character
+//  into a buffer
+//-------------------------------------------------
+
+template <typename F>
+bool input_character(std::string &buffer, unicode_char unichar, F &&filter)
+{
+	bool result = false;
+	auto buflen = buffer.size();
+
+	if ((unichar == 8) || (unichar == 0x7f))
+	{
+		// backspace
+		if (0 < buflen)
+		{
+			auto buffer_oldend = buffer.c_str() + buflen;
+			auto buffer_newend = utf8_previous_char(buffer_oldend);
+			buffer.resize(buffer_newend - buffer.c_str());
+			result = true;
+		}
+	}
+	else if ((unichar >= ' ') && (!filter || filter(unichar)))
+	{
+		// append this character
+		buffer += utf8_from_uchar(unichar);
+		result = true;
+	}
+	return result;
+}
+
+
 #endif /* __UI_UTILS_H__ */