Path: chuka.playstation.co.uk!news
From: James Russell <James_Russell@scee.sony.co.uk>
Newsgroups: scee.yaroze.profile
Subject: Re: memory card
Date: Mon, 08 Jun 1998 10:07:36 +0100
Organization: Sony Computer Entertainment Europe
Lines: 119
Message-ID: <357BA9D8.6BE410E3@scee.sony.co.uk>
References: <3577AC68.1B73@city.ac.uk> <35789962.1338365@news.playstation.co.uk>
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> If so please post them somewhere so the rest of us who are too lazy to
> figure out how to access the memory cards can rip the code off and
> possibly help you with it !!

Here's some code snippets from my memory card editor.
There's directory reading and file read/writing.

Cheers,

James



// Edit file ----------------------------------------------------

void editFile(int fileNum) {
int handle;

	CLEAR;
	sprintf(strbuffer,"bu10:%s",dirents[fileNum].name);
	handle = open(strbuffer, O_RDWR);
	if(handle == -1) {
		println("Could not open this file!");
		println("Press Start to continue.");
		DRAW;
		while( GetPad() != PADstart);
		return;
		}

	if( (data = (char*)malloc(dirents[fileNum].size)) == 0) {
		close(handle);
		println("Could not allocate enough memory to hold this file!");
		println("Press Start to continue.");
		DRAW;
		while( GetPad() != PADstart);
		return;
		}
	if(read(handle,data,dirents[fileNum].size) == -1) {
		close(handle);
		free(data);
		println("Error reading from memory card!");
		println("Press Start to continue.");
		DRAW;
		while( GetPad() != PADstart);
		return;
		}

	size = dirents[fileNum].size;
	if(editData()) {
		printat(5,YSIZE-2,"SAVING.... Please wait.");
		DRAW;
		CLEAR;
		CLEARATTR;
		lseek(handle,0,SEEK_SET);
		if(write(handle,data,size) == -1) {
			println("Error writing to memory card!");
			println("Press Start to continue.");
			DRAW;
			while( GetPad() != PADstart);
			}
		}
	close(handle);
	free(data);
}


int numFiles = 0;
struct DIRENTRY dirents[15];

void main(void) {
struct DIRENTRY file, *filep;

	PadInit();

	initialiseDisplay();
	initialiseTextMode();
	switch(TestCard(1)) {
		case 0:
			printf("\n\nNo memory card present in slot 2.\n");
			printf("  Exiting...\n");
			break;

		case 1:  // Card or new card detected.
		case 2:
			filep = firstfile("bu10:",&file);
			if(filep == 0)
				{
				printf("Can't open card directory or there are no files!\n");
				printf("  Exiting...\n");
				exit(0);
				}

			do {
				memcpy(&dirents[numFiles++],&file,sizeof(struct DIRENTRY));
			} while(nextfile(&file) != 0);

			mainMenu();
			break;

		case 3:
			printf("\n\nCommunication or card abnormality detected in slot 2.\n");
			printf("  Exiting...\n");
			break;

		case 4:
			printf("\n\nUninitialised card detected in slot 2.\n");
			printf("  Exiting...\n");
			break;

		default:
			printf("\n\nUnknown error from TestCard(1)\n");
			printf("  Exiting...\n");
			break;
	}
	ResetGraph(1);
	uninitialiseTextMode();
	exit(0);

}