Modern respak used, changed pack and code

fileManager.cpp

@@ -1,90 +1,100 @@
 #include "fileManager.h"
-#include "stdio.h"
-#include "stdlib.h"
-#include "string.h"
-#include "fcntl.h"
-#ifdef _WIN32
-#include "io.h"
-#else
-#include "unistd.h"
-#endif
+#include <SDL2/SDL.h>
+#include <fstream>
 
-char *resourceFileName = "data.jrf";
+#pragma pack(push,1)
 
-void setResourceFile(char *p_resourceFileName) {
+struct DATA_Header {
+	char magic[4];
+	Uint32 num_files;
+	Uint32 index_offset;
+};
+
+struct DATA_Info {
+	Uint32	offset;
+	Uint32	length;
+	char	name[13];
+};
+
+struct DATA_Index {
+	DATA_Info*	file_info;
+};
+
+struct DATA_File {
+	DATA_Header	header;
+	DATA_Index	index;
+};
+
+#pragma pack(pop)
+
+static const char *resourceFileName = "data.jrf";
+static DATA_File *data_file = NULL;
+
+void file_setResourceFile(const char *p_resourceFileName) {
 	resourceFileName = p_resourceFileName;
 }
 
-char *GetBufferFromResource(char *resourcename, int *filesize) 
-{
-	//Try to open the resource file in question
-	int fd = open(resourceFileName, O_RDONLY);
-	if (fd < 0) 
-	{
-		perror("Error opening resource file");
+static void getDataFile() {
+	std::ifstream fd( resourceFileName, std::ios::in | std::ios::binary );
+
+	if( fd.fail() ) {
+		perror("No s'ha pogut obrir l'arxiu de recursos");
 		exit(1);
 	}
 	
-	//Make sure we're at the beginning of the file
-	lseek(fd, 0, SEEK_SET);
+	data_file = (DATA_File*)malloc( sizeof( DATA_File ) );
 
-	//Read the first INT, which will tell us how many files are in this resource
-	int numfiles;
-	int resultat = read(fd, &numfiles, sizeof(int));
+	fd.read( (char*)&data_file->header, sizeof( DATA_Header ) );
 
-#ifdef _WIN32
-	int final = eof(fd);
-#endif
+	fd.seekg( data_file->header.index_offset );
 
-	//Get the pointers to the stored files
-	int *filestart = (int *) malloc(sizeof(int) * numfiles);
-	resultat = read(fd, filestart, sizeof(int) * numfiles);
+	data_file->index.file_info = (DATA_Info*)malloc( data_file->header.num_files * sizeof( DATA_Info ) );
 
-	//Loop through the files, looking for the file in question
-	int filenamesize;
-	char *buffer;
-	int i;
-	for(i=0;i<numfiles;i++) 
-	{
-		int result = 129;
-		char *filename;
-		//Seek to the location
-		lseek(fd, filestart[i], SEEK_SET);
-		//Get the filesize value
-		read(fd, filesize, sizeof(int));
-		//Get the size of the filename string
-		read(fd, &filenamesize, sizeof(int));
-		//Size the buffer and read the filename
-		filename = (char *) malloc(filenamesize + 1);
-		result = read(fd, filename, filenamesize);
-		//Remember to terminate the string properly!
-		filename[filenamesize] = '\0';
-		//Compare to the string we're looking for
-		if (strcmp(filename, resourcename) == 0) 
-		{
-			//Get the contents of the file
-			buffer = (char *) malloc(*filesize);
-			read(fd, buffer, *filesize);
-			free(filename);
-			break;
-		}
-		//Free the filename buffer
-		free(filename);
+	fd.read( (char*)data_file->index.file_info, data_file->header.num_files * sizeof( DATA_Info ) );
+
+	fd.close();
+}
+
+const char *file_setBufferFromResource(const char *resourcename, int& filesize) {
+
+	if( data_file == NULL ) {
+		getDataFile();
 	}
 
-	//Release memory
-	free(filestart);
+	bool found = false;
+	int count = 0;
+	while( !found && count < data_file->header.num_files ) {
+		found = ( strcmp( resourcename, data_file->index.file_info[count].name ) == 0 );
+		if( !found ) count++;
+	}
 
-	//Close the resource file!
-	close(fd);
-	
-	//Did we find the file within the resource that we were looking for?
-	if (buffer == NULL) 
-	{
-		printf("Unable to find '%s' in the resource file!\n", resourcename);
+	if( !found ) {
+		perror("El recurs no s'ha trobat en l'arxiu de recursos");
 		exit(1);
 	}
 
-	//Return the buffer
+	filesize = data_file->index.file_info[count].length;
+
+	std::ifstream fd( resourceFileName, std::ios::in | std::ios::binary );
+
+	if( fd.fail() ) {
+		perror("No s'ha pogut obrir l'arxiu de recursos");
+		exit(1);
+	}
+
+	fd.seekg( data_file->index.file_info[count].offset );
+	
+	char* buffer = (char*)malloc( filesize );
+	fd.read( buffer, filesize );
+
+	fd.close();
+
 	return buffer;
 }
+
+void file_quit() {
+	if( data_file != NULL ) {
+		free( data_file->index.file_info );
+		free( data_file );
+	}
+}

fileManager.h

@@ -1,5 +1,7 @@
 #pragma once
 
-void setResourceFile(char *p_resourceFileName);
+void file_setResourceFile(const char *p_resourceFileName);
 
-char *GetBufferFromResource(char *resourcename, int *filesize); 
+const char *file_getBufferFromResource(const char *resourcename, int& filesize); 
+
+void file_quit();