82 lines
1.6 KiB
C++
82 lines
1.6 KiB
C++
#include "vfs.h"
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#include "delog/delog.h"
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#include <string>
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using namespace VFS;
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DEntry *DEntry::get_child(const std::string& name) {
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load_children();
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for (auto x: children) {
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if (x->name == name)
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return x;
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}
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return nullptr;
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}
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DEntry *DEntry::get_child(const NameI *namei, DEntry **path) {
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DEntry *ans = this;
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if (namei->name == "/") {
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ans=fs->root;
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}
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namei = namei->next;
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if (path != nullptr)
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*path = ans;
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while (namei != nullptr && ans != nullptr) {
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if (path != nullptr)
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*path = ans;
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ans = ans->get_child(namei->name);
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namei = namei->next;
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}
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_pos();
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return ans;
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}
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DEntry *DEntry::get_path(const NameI *namei, std::string* fname) {
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DEntry *ans = this;
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if (namei->name == "/") {
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ans=fs->root;
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}
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namei = namei->next;
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if (namei == nullptr) {
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return ans;
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}
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while (namei->next != nullptr && ans != nullptr) {
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ans = ans->get_child(namei->name);
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namei = namei->next;
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}
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if (fname != nullptr) {
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(*fname) = namei->name;
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}
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return ans;
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}
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File *DEntry::open(const std::string& name) {
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auto a = get_child(name);
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if (a == nullptr || a->type != RegularFile)
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return nullptr;
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return a->get_file();
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}
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File *DEntry::open() {
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return get_file();
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}
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NameI::NameI(const std::string name, NameI *p): name(name) {
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if (p != nullptr) {
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p->next = this;
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}
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prev = p;
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next = nullptr;
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}
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NameI::~NameI() {
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if (next != nullptr)
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next->prev = nullptr;
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if (prev != nullptr)
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prev->next = nullptr;
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delete next;
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delete prev;
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} |