Genesis-Plus-GX/source/ngc/history.c

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2008-08-07 14:26:07 +02:00
/*
* history.c
* genplusgx-mdisibio
*
* Created by Martin Disibio on 6/17/08.
* Copyright 2008 __MyCompanyName__. All rights reserved.
*
*/
#include "shared.h"
#include "font.h"
#include "history.h"
t_history history;
void history_save()
{
/* first check if directory exist */
DIR_ITER *dir = diropen("/genplus");
if (dir == NULL) mkdir("/genplus",S_IRWXU);
else dirclose(dir);
/* open file for writing */
FILE *fp = fopen("/genplus/romhistory.ini", "wb");
if (fp == NULL) return;
/* save options */
fwrite(&history, sizeof(history), 1, fp);
fclose(fp);
}
/****************************************************************************
* history_add_file
*
* Adds the given file path to the top of the history list, shifting each
* existing entry in the history down one place. If given file path is
* already in the list then the existing entry is (in effect) moved to the
* top instead.
****************************************************************************/
void history_add_file(char *filepath, char *filename)
{
/* Create the new entry for this path. */
t_history_entry newentry;
strncpy(newentry.filepath, filepath, MAXJOLIET - 1);
strncpy(newentry.filename, filename, MAXJOLIET - 1);
newentry.filepath[MAXJOLIET - 1] = '\0';
newentry.filename[MAXJOLIET - 1] = '\0';
t_history_entry oldentry; /* Old entry is the one being shuffled down a spot. */
t_history_entry currentry; /* Curr entry is the one that just replaced old path. */
/* Initially set curr entry to the new value. */
memcpy(&currentry, &newentry, sizeof(t_history_entry));
int i;
for(i=0; i < NUM_HISTORY_ENTRIES; i++)
{
/* Save off the next entry. */
memcpy(&oldentry, &history.entries[i], sizeof(t_history_entry));
/* Overwrite with the previous entry. */
memcpy(&history.entries[i], &currentry, sizeof(t_history_entry));
/* Switch the old entry to the curr entry now. */
memcpy(&currentry, &oldentry, sizeof(t_history_entry));
/* If the entry in the list at this spot matches
the new entry then do nothing and let this
entry get deleted. */
if(strcmp(newentry.filepath, currentry.filepath) == 0 && strcmp(newentry.filename, currentry.filename) == 0)
break;
}
/* now save to disk */
history_save();
}
void history_load()
{
/* open file for reading */
FILE *fp = fopen("/genplus/romhistory.ini", "rb");
if (fp == NULL) return;
/* read file */
fread(&history, sizeof(history), 1, fp);
fclose(fp);
}
void set_history_defaults(void)
{
int i;
for(i=0; i < NUM_HISTORY_ENTRIES; i++)
{
memset(&history.entries[i], 0, sizeof(t_history_entry));
}
}