/*
* Gets an IFSFileEntry from a certain directory, and copies it
* into dest
*/
static int ifs_get_file_entry(int parent, char* dir, IFSFileEntry* dest)
{
bool has_sep = contains(dir, '/');
int32_t* directory = (int32_t*)(initrd + ifs_get_address(parent));
for(int i = 0; i < 256&& directory[i] != -1; i++)
{
int e = directory[i];
IFSFileEntry* entry = (IFSFileEntry*)(initrd + ifs_get_address(e));
if(has_sep && strncmp(dir, entry->file_name, strindx(dir, '/')) == 0)
{
return ifs_get_file_entry(entry->data_index, strrchr(dir, '/') + 1, dest);
}
else if (!has_sep)
{
if(strcmp(entry->file_name, dir) == 0)
{
memcpy(dest, entry, sizeof(IFSFileEntry));
return 1;
}
}
}
return 0;
}
/*
* Returns the index to a directory table
*/
static int ifs_get_directory(struct device *dev, int parent, char *dir)
{
if(dir[0] == 0 && parent == 0)
return 0;
bool has_sep = contains(dir, '/');
int32_t directory[256];
struct ifs_entry dentry;
device_read(dev, &dentry, sizeof(struct ifs_entry), ifs_get_address(dev, parent));
int dtable = dentry.data_index;
device_read(dev, directory, 1024, ifs_get_address(dev, dtable));
for (int i = 0; i < 256 && directory[i] != -1; i++) {
int e = directory[i];
struct ifs_entry entry;
device_read(dev, &entry, sizeof(struct ifs_entry), ifs_get_address(dev, e));
if (has_sep && strncmp(dir, entry.file_name, strindx(dir, '/')) == 0) {
return ifs_get_directory(dev, e, strrchr(dir, '/') + 1);
} else if (!has_sep) {
if (strncmp(entry.file_name, dir, strlen(entry.file_name)) == 0) {
return e;
}
}
}
return -1;
}
/*
* Returns the index to a directory table
*/
static int ifs_get_directory(int parent, char* dir)
{
bool has_sep = contains(dir, '/');
int32_t* directory = (int32_t*)(initrd + ifs_get_address(parent));
for(int i = 0; i < 256 && directory[i] != -1; i++)
{
int e = directory[i];
IFSFileEntry* entry = (IFSFileEntry*)(initrd + ifs_get_address(e));
if(has_sep && strncmp(dir, entry->file_name, strindx(dir, '/')) == 0)
{
return ifs_get_directory(entry->data_index, strrchr(dir, '/') + 1);
}
else if (!has_sep)
{
if(strncmp(entry->file_name, dir, strlen(entry->file_name)) == 0)
{
return e;
}
}
}
return -1;
}