feat: add missing hash count to meta info

Author: craftablescience

README.md

@@ -113,18 +113,23 @@ $ ./fgptool -m META "/home/lxlewis/Downloads/PORTAL/"
 
 BACKGROUND1.GRP
 	File count: 2868
+	Missing hashes: 87 (3.03347%)
 	Loading screen path: materials/vgui/appchooser/background_portal.ps3.vtf
 BACKGROUND2.GRP
 	File count: 2757
+	Missing hashes: 83 (3.01052%)
 	Loading screen path: materials/vgui/appchooser/background_portal.ps3.vtf
 ESCAPE_00.GRP
 	File count: 3379
+	Missing hashes: 91 (2.6931%)
 	Loading screen path: materials/vgui/appchooser/background_portal.ps3.vtf
 ESCAPE_01.GRP
 	File count: 3844
+	Missing hashes: 104 (2.70552%)
 	Loading screen path: materials/vgui/appchooser/background_portal.ps3.vtf
 ESCAPE_02.GRP
 	File count: 4672
+	Missing hashes: 113 (2.41866%)
 	Loading screen path: materials/vgui/appchooser/background_portal.ps3.vtf
 ```
 

src/fgptool.cpp

@@ -259,6 +259,14 @@ void meta(const std::string& inputPath) {
 	}
 	std::cout << fgp->getFilename() << std::endl;
 	std::cout << "\tFile count: " << fgp->getEntryCount() << std::endl;
+
+	const uint32_t total = fgp->getEntryCount();
+	uint32_t existed = 0;
+	fgp->runForAllEntries([&existed](const std::string& path, const Entry&) {
+		existed += !path.starts_with("__hashed__/");
+	});
+	std::cout << "\tMissing hashes: " << (total - existed) << " (" << ((total - existed) / static_cast<double>(total) * 100) << "%)" << std::endl;
+
 	std::cout << "\tLoading screen path: " << dynamic_cast<FGP&>(*fgp).getLoadingScreenFilePath() << std::endl;
 }