GUI: add custom title format to settings dialog

rpcs3/Emu/title.cpp

@@ -0,0 +1,104 @@
+#include "stdafx.h"
+#include "title.h"
+#include "rpcs3_version.h"
+
+namespace rpcs3
+{
+	std::string get_formatted_title(const title_format_data& title_data)
+	{
+		// Get version by substringing VersionNumber-buildnumber-commithash to get just the part before the dash
+		std::string version = rpcs3::get_version().to_string();
+		const auto last_minus = version.find_last_of('-');
+
+		// Add branch and commit hash to version on frame unless it's master.
+		if (rpcs3::get_branch() != "master"sv && rpcs3::get_branch() != "HEAD"sv)
+		{
+			version = version.substr(0, ~last_minus ? last_minus + 9 : last_minus);
+			version += '-';
+			version += rpcs3::get_branch();
+		}
+		else
+		{
+			version = version.substr(0, last_minus);
+		}
+
+		// Parse title format string
+		std::string title_string;
+
+		for (std::size_t i = 0; i < title_data.format.size();)
+		{
+			const char c1 = title_data.format[i];
+
+			if (c1 == '\0')
+			{
+				break;
+			}
+
+			switch (c1)
+			{
+			case '%':
+			{
+				const char c2 = title_data.format[i + 1];
+
+				if (c2 == '\0')
+				{
+					title_string += '%';
+					i++;
+					continue;
+				}
+
+				switch (c2)
+				{
+				case '%':
+				{
+					title_string += '%';
+					break;
+				}
+				case 'T':
+				{
+					title_string += title_data.title;
+					break;
+				}
+				case 't':
+				{
+					title_string += title_data.title_id;
+					break;
+				}
+				case 'R':
+				{
+					fmt::append(title_string, "%s", title_data.renderer);
+					break;
+				}
+				case 'V':
+				{
+					title_string += version;
+					break;
+				}
+				case 'F':
+				{
+					fmt::append(title_string, "%.2f", title_data.fps);
+					break;
+				}
+				default:
+				{
+					title_string += '%';
+					title_string += c2;
+					break;
+				}
+				}
+
+				i += 2;
+				break;
+			}
+			default:
+			{
+				title_string += c1;
+				i += 1;
+				break;
+			}
+			}
+		}
+
+		return title_string;
+	}
+}