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#include "vdir.h"
vdir::vdir(node* parent) : node(parent, FT_DIR), children(8, 64) {
children.add(new vdir_child(".", this));
child_count = 1;
if (parent != 0) {
children.add(new vdir_child("..", parent));
child_count++;
}
}
vdir::~vdir() {
//TODO : free children
}
node* vdir::get_child(char* name) {
for (unsigned i = 0; i < child_count; i++) {
vdir_child *c = children.at(i);
ASSERT(c != 0);
if (strcmp(c->name, name) == 0) return c->el;
}
return 0;
}
int vdir::read(size_t offset, size_t len, char* buffer) {
if (offset >= child_count) return 0;
vdir_child *c = children.at(offset);
ASSERT(c != 0);
size_t nlen = strlen(c->name);
if (len <= nlen) {
return E_TOO_SHORT;
}
strcpy(buffer, c->name);
return nlen;
}
int vdir::write(size_t offset, size_t len, char* buffer) {
// rename file
if (offset >= child_count) return E_INVALID_RANGE;
vdir_child *c = children.at(offset);
ASSERT(c != 0);
if (len == 0) return E_INVALID;
kfree(c->name);
c->name = (char*)kmalloc(len + 1);
for (unsigned i = 0; i < len; i++) c->name[i] = buffer[i];
c->name[len] = 0;
return len;
}
size_t vdir::get_size() {
return child_count;
}
int vdir::add_child(char* name, node *child) {
ASSERT((int)child_count == children.add(new vdir_child(name, child)));
child_count++;
return 0;
}
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