Optimize RDat constructor process

conanfile.txt

@@ -11,6 +11,7 @@ cmake_find_package
 [options]
 boost:zlib=False
 boost:bzip2=False
+boost:without_test=True
 
 [imports]
 bin, *.dll -> ./bin

include/RDI.h

@@ -7,6 +7,9 @@
  *
  */
 
+#include "RDI_Datatypes.h"
+
+
 #ifndef RDI_H_
 #define RDI_H_
 

include/RDI_Datatypes.h

@@ -0,0 +1,28 @@
+/**
+ * @file		RDI_Datatypes.h
+ * @date		20/09/2022
+ * @author		JackCarterSmith
+ * @copyright	GPL-v3.0
+ * @brief		Rogue Data Interface library variables type definitions.
+ *
+ */
+
+#ifndef RDI_DATATYPES_H_
+#define RDI_DATATYPES_H_
+
+namespace RDI {
+
+typedef enum e_rdi_result {
+	RDI_OK,
+
+	RDI_ERROR_GENERIC,
+	RDI_ERROR_PROCESS,
+	RDI_ERROR_MEMORY,
+	RDI_ERROR_FILESYSTEM,
+
+	RDI_ERROR_UNEXPECTED
+} RDI_RESULT;
+
+}
+
+#endif /* RDI_DATATYPES_H_ */

src/RDat.cpp

@@ -15,6 +15,7 @@
 #include <RSPModel.h>
 #include <RSPTerrain.h>
 #include <RSPTexture.h>
+#include <RDI_Datatypes.h>
 #include "data_struct.h"
 #include "RDat.h"
 
@@ -28,15 +29,42 @@ using boost::filesystem::file_size;
 
 namespace RDI {
 
-	struct dataSection {
-		std::string name = "";
-		unsigned int offset = 0;
-	};
-
 	RDat::RDat( string fPath ) {
-		unsigned int i, size;
-		path fp(fPath);
-		std::fstream rdf;
+		RDI_RESULT errCode = RDI_OK;
+
+		this->workingDir = fPath;
+
+		// Process header file and dump data file in memory.
+		errCode = DumpLegacyFiles();
+		if (errCode == RDI_ERROR_FILESYSTEM) {
+			std::cout << "Data files (DATA.DAT/DATA.HDR) not found! Interrupt." << std::endl;
+			return;
+		} else if (errCode == RDI_ERROR_MEMORY) {
+			std::cout << "Memory allocation or file access failed! Interrupt." << std::endl;
+			return;
+		}
+
+		// Process data file tree and filter file subtype into list.
+		ProcessFilesTree();
+	}
+
+	RDat::~RDat() {
+		free(rDatPtr);
+		delete pDatSection;
+	}
+
+	string RDat::getDataSectionName( unsigned char id ) { return pDatSection->at(id).name; }
+	unsigned int RDat::getDataSectionOffset( unsigned char id ) { return pDatSection->at(id).offset; }
+
+	/**
+	 * Helper function to search for legacy DATA.DAT/HDR and dump it in memory.
+	 *
+	 * @return Error status.
+	 */
+	RDI_RESULT RDat::DumpLegacyFiles() {
+		unsigned int i;
+		path fp(workingDir);
+		MEMFILE pTmpFile;
 
 		// If input as a directory, assume it's contain DATA.DAT/HDR.
 		if (boost::filesystem::is_directory(fp)) fp.append("DATA.HDR");
@@ -45,47 +73,61 @@ namespace RDI {
 		if (fp.extension() == ".DAT") fp.replace_extension(".HDR");
 
 		// Open and parse data header file.
-		rdf.open(fp.string(), ios::in | ios::binary);
+		//if (boost::filesystem::exists(fp)) return RDI_ERROR_FILESYSTEM;
+		pTmpFile = MallocFile(fp);
+		if (!pTmpFile) return RDI_ERROR_MEMORY;
 
-		if (rdf.is_open()) {
-			size = file_size(fp);
-			rDatPtr = (MEMFILE)malloc(size);
-			rdf.read(rDatPtr, size);
-			rdf.close();
-
-			cDatSection = size / sizeof(T_HDR_ENTRY);
+		cDatSection = file_size(fp) / sizeof(T_HDR_ENTRY);
 		pDatSection = new vector<struct dataSection>(cDatSection);
 		for ( i = 0; i < pDatSection->size(); i++ ) {
-				pDatSection->at(i).name.append(((T_HDR_ENTRY*)(rDatPtr + i * sizeof(T_HDR_ENTRY)))->section_name);
-				pDatSection->at(i).offset = ((T_HDR_ENTRY*)(rDatPtr + i * sizeof(T_HDR_ENTRY)))->section_offset;
+			// Store header infos into structure to make easier access later.
+			pDatSection->at(i).name.append(((T_HDR_ENTRY*)(pTmpFile + i * sizeof(T_HDR_ENTRY)))->section_name);
+			pDatSection->at(i).offset = ((T_HDR_ENTRY*)(pTmpFile + i * sizeof(T_HDR_ENTRY)))->section_offset;
 		}
 
+		free(pTmpFile);
+
+		// Dump data file and store it's pointer into class member.
 		fp.replace_extension(".DAT");
+		//if (boost::filesystem::exists(fp)) return RDI_ERROR_FILESYSTEM;
+		rDatPtr = MallocFile(fp);
+		if (!rDatPtr) return RDI_ERROR_MEMORY;
 
-			// Open and parse file tree in datas file.
-			rdf.open(fp.string(), ios::in | ios::binary);
+		return RDI_OK;
+	}
 
+	/**
+	 * Dump file into to newly allocated memory.
+	 * @param filePath File path.
+	 *
+	 * @return Start memory pointer of the file.
+	 */
+	MEMFILE RDat::MallocFile( path filePath ) {
+		const unsigned int size = file_size(filePath);
+		std::fstream rdf;
+		MEMFILE fPtr = NULL;
+
+		rdf.open(filePath.string(), ios::in | ios::binary);
 		if (rdf.is_open()) {
-				size = file_size(fp);
-				rDatPtr = (MEMFILE)realloc(rDatPtr, size);
-				rdf.read(rDatPtr, size);
+			fPtr = (MEMFILE)malloc(size);
+			rdf.read(fPtr, size);
 			rdf.close();
-
-				//TODO: Process files lists.
-			} else {
-				std::cout << "Datas file (DAT) not found!" << std::endl << "Data files should have same exact name." << std::endl;
-			}
-		} else {
-			std::cout << "Header file (HDR) not found!" << std::endl << "Data files should have same exact name." << std::endl;
-		}
 		}
 
-	RDat::~RDat() {
-		free(rDatPtr);
-		delete pDatSection;
+		return fPtr;
 	}
 
-	std::string RDat::getDataSectionName( unsigned char id ) { return pDatSection->at(id).name; }
-	unsigned int RDat::getDataSectionOffset( unsigned char id ) { return pDatSection->at(id).offset; }
+	/**
+	 * Helper function to process files content for further use in this library.
+	 *
+	 * @return Error status.
+	 */
+	RDI_RESULT RDat::ProcessFilesTree() {
+
+
+		return RDI_OK;
+	}
+
+
 
 } /* namespace RDI */

src/RDat.h

@@ -7,7 +7,9 @@
  *
  */
 
+#include <boost/filesystem.hpp>
 #include <vector>
+#include "RDI_Datatypes.h"
 
 
 #ifndef RDAT_H_
@@ -17,14 +19,12 @@ namespace RDI {
 
 	typedef char* MEMFILE;
 
+	struct dataSection {
+		std::string name = "";
+		unsigned int offset = 0;
+	};
+
 	class RDat {
-	private:
-		std::string workingDir = ".";
-
-		unsigned char cDatSection = 0;
-		std::vector<struct dataSection> *pDatSection = nullptr;
-		MEMFILE rDatPtr = nullptr;
-
 	public:
 		RDat( std::string fPath );
 		~RDat();
@@ -40,6 +40,18 @@ namespace RDI {
 		std::string getDataSectionName( unsigned char id );
 		unsigned int getDataSectionOffset( unsigned char id );
 
+	private:
+		std::string workingDir = ".";
+
+		unsigned char cDatSection = 0;
+		std::vector<struct dataSection> *pDatSection = nullptr;
+		MEMFILE rDatPtr = nullptr;
+
+		/* File processing methods */
+		RDI_RESULT DumpLegacyFiles();
+		MEMFILE MallocFile( boost::filesystem::path filePath );
+		RDI_RESULT ProcessFilesTree();
+
 	};
 
 } /* namespace RDI */