Added sqlite

.gitmodules

@@ -1,3 +1,3 @@
 [submodule "vendor/libzip"]
 	path = vendor/libzip
-	url = https://github.com/nih-at/libzip
+	url = https://github.com/nih-at/libzip

CMakeLists.txt

@@ -1,4 +1,6 @@
 cmake_minimum_required(VERSION 3.10)
+SET(CXX_STANDARD 17)
+
 
 project(AnkiParser)
 

ankiparser/CMakeLists.txt

@@ -1,3 +1,5 @@
+find_package(sqlite3 REQUIRED)
+
 file(GLOB_RECURSE target_src
 	"src/*.cpp"
 )
@@ -14,8 +16,10 @@ add_library(ankiparser STATIC
 target_include_directories(ankiparser PUBLIC
 	include
 	libzip::zip
+	${SQLite3_INCLUDE_DIR}
 )
 
 target_link_libraries(ankiparser PUBLIC
 	libzip::zip
+	${SQLite3_LIBRARY}
 )

ankiparser/include/Package.hpp

@@ -2,6 +2,8 @@
 
 #include <string>
 
+struct sqlite3;
+
 namespace Anki
 {
 	class Package
@@ -14,6 +16,12 @@ namespace Anki
 		int Open(const std::string& filename);
 
 	private:
-		char* collection;
+		void DumpAnki2File(const char* raw, size_t size);
+
+	private:
+		sqlite3* collection;
+		std::string tmpDbName;
+
+		static bool sqlite_init;
 	};
 }

ankiparser/src/Package.cpp

@@ -1,12 +1,33 @@
 #include "Package.hpp"
 #include <iostream>
+#include <fstream>
+
 #include <zip.h>
+#include <sqlite3.h>
+
+bool Anki::Package::sqlite_init = false;
+
+static int callback(void* NotUsed, int argc, char** argv, char** azColName)
+{
+	for (int i = 0; i < argc; i++)
+	{
+		std::cout << argv[i] << "\t";
+	}
+	std::cout << std::endl;
+	return 0;
+}
 
 namespace Anki
 {
 	Package::Package() :
 		collection(nullptr)
 	{
+		if (!sqlite_init)
+		{
+			srand(time(NULL));
+			sqlite3_initialize();
+			sqlite_init = true;
+		}
 	}
 
 	Package::Package(const std::string& filename) :
@@ -17,7 +38,7 @@ namespace Anki
 
 	Package::~Package()
 	{
-		if (collection != nullptr) delete collection;
+		sqlite3_close(collection);
 	}
 
 	int Package::Open(const std::string& filename)
@@ -31,16 +52,46 @@ namespace Anki
 		zip_stat_init(&st);
 		zip_stat(archive, collection_filename, 0, &st);
 
-		collection = new char[st.size];
+		char* collection_raw = new char[st.size];
 
 		zip_file* collection_file = zip_fopen(archive, collection_filename, 0);
-		zip_fread(collection_file, collection, st.size);
+		zip_fread(collection_file, collection_raw, st.size);
 		zip_fclose(collection_file);
 
 		zip_close(archive);
 
-		std::cout << collection << std::endl;
+		DumpAnki2File(collection_raw, st.size);
+
+		delete[] collection_raw;
 
 		return err;
 	}
+
+	void Package::DumpAnki2File(const char* raw, size_t size)
+	{
+		// SQLite is kinda stupid and can't create a database from data stored in memory.
+		// It insists on opening a database file instead. I don't see a way around that unfortunately
+		// So I have to dump the database into a file first
+		// tmpDbName = std::to_string(rand()) + ".db";
+		tmpDbName = "test.db";
+		std::ofstream tmp_db(tmpDbName, std::ios::binary);
+		tmp_db.write(raw, size);
+		tmp_db.close();
+
+
+
+		int result = sqlite3_open(tmpDbName.c_str(), &collection);
+		if (result)
+		{
+			std::cerr << result << std::endl;
+			return;
+		}
+
+		char* errMsg = nullptr;
+		result = sqlite3_exec(collection, "SELECT decks FROM col;", callback, 0, &errMsg);
+		if (result != SQLITE_OK)
+		{
+			std::cerr << errMsg << std::endl;
+		}
+	}
 }

examples/test.cpp

@@ -1,6 +1,7 @@
 #include <iostream>
 #include <Package.hpp>
 #include <zip.h>
+#include <sqlite3.h>
 
 int main(int argc, char** argv)
 {