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LibCore: Add a static Core::File::open() convenience function

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This helper opens a file with a given name, mode and permissions and
returns it in a RefPtr<File>. I think this will be a bit nicer to use
than having to go through Core::File::construct() every time.
This commit is contained in:
Andreas Kling 2020-03-30 12:08:25 +02:00
parent ec91d2eb9f
commit 0df15823b5
2 changed files with 18 additions and 1 deletions
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15
Libraries/LibCore/File.cpp
View file

@ -33,6 +33,14 @@
namespace Core {
RefPtr<File> File::open(const String& filename, IODevice::OpenMode mode, mode_t permissions)
{
auto file = File::construct(filename);
if (!file->open_impl(mode, permissions))
return nullptr;
return file;
}
File::File(const StringView& filename, Object* parent)
: IODevice(parent)
, m_filename(filename)
@ -54,6 +62,11 @@ bool File::open(int fd, IODevice::OpenMode mode, ShouldCloseFileDescription shou
}
bool File::open(IODevice::OpenMode mode)
{
return open_impl(mode, 0666);
}
bool File::open_impl(IODevice::OpenMode mode, mode_t permissions)
{
ASSERT(!m_filename.is_null());
int flags = 0;
@ -73,7 +86,7 @@ bool File::open(IODevice::OpenMode mode)
flags |= O_TRUNC;
if (mode & IODevice::MustBeNew)
flags |= O_EXCL;
int fd = ::open(m_filename.characters(), flags, 0666);
int fd = ::open(m_filename.characters(), flags, permissions);
if (fd < 0) {
set_error(errno);
return false;

4
Libraries/LibCore/File.h
View file

@ -36,6 +36,8 @@ class File final : public IODevice {
public:
virtual ~File() override;
static RefPtr<File> open(const String& filename, IODevice::OpenMode, mode_t = 0644);
String filename() const { return m_filename; }
void set_filename(const StringView& filename) { m_filename = filename; }
@ -59,6 +61,8 @@ private:
}
explicit File(const StringView&, Object* parent = nullptr);
bool open_impl(IODevice::OpenMode, mode_t);
String m_filename;
ShouldCloseFileDescription m_should_close_file_descriptor { ShouldCloseFileDescription::Yes };
};