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LibCore: Add line iterators to IODevice

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AnotherTest 2021-01-11 21:40:09 +03:30 • committed by Andreas Kling
parent 7029a8f605
commit 711ced80c0
2 changed files with 43 additions and 0 deletions
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25
Libraries/LibCore/IODevice.h
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@ -31,6 +31,28 @@
namespace Core {
// This is not necessarily a valid iterator in all contexts,
// if we had concepts, this would be InputIterator, not Copyable, Movable.
class LineIterator {
AK_MAKE_NONCOPYABLE(LineIterator);
public:
explicit LineIterator(IODevice&, bool is_end = false);
bool operator==(const LineIterator& other) const { return &other == this || (at_end() && other.is_end()) || (other.at_end() && is_end()); }
bool is_end() const { return m_is_end; }
bool at_end() const;
LineIterator& operator++();
StringView operator*() const { return m_buffer; }
private:
NonnullRefPtr<IODevice> m_device;
bool m_is_end { false };
String m_buffer;
};
class IODevice : public Object {
C_OBJECT_ABSTRACT(IODevice)
public:
@ -84,6 +106,9 @@ public:
int printf(const char*, ...);
LineIterator line_begin() & { return LineIterator(*this); }
LineIterator line_end() { return LineIterator(*this, true); }
protected:
explicit IODevice(Object* parent = nullptr);