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LibCore: Add File::{stdin, stdout, stderr}()

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This should make it easier to get a Core::File for standard streams.
This commit is contained in:
Peter Elliott
2020-08-17 15:58:07 -06:00
committed by Andreas Kling
parent 6c2d0dea91
commit f69b419c05
2 changed files with 34 additions and 0 deletions
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30
Libraries/LibCore/File.cpp
View File

@@ -203,4 +203,34 @@ String File::read_link(const StringView& link_path)
#endif #endif
static RefPtr<File> stdin_file;
static RefPtr<File> stdout_file;
static RefPtr<File> stderr_file;
NonnullRefPtr<File> File::stdin()
{
if (!stdin_file) {
stdin_file = File::construct();
stdin_file->open(STDIN_FILENO, IODevice::ReadOnly, ShouldCloseFileDescription::No);
}
return *stdin_file;
}
NonnullRefPtr<File> File::stdout()
{
if (!stdout_file) {
stdout_file = File::construct();
stdout_file->open(STDOUT_FILENO, IODevice::WriteOnly, ShouldCloseFileDescription::No);
}
return *stdout_file;
}
NonnullRefPtr<File> File::stderr()
{
if (!stderr_file) {
stderr_file = File::construct();
stderr_file->open(STDERR_FILENO, IODevice::WriteOnly, ShouldCloseFileDescription::No);
}
return *stderr_file;
}
} }

4
Libraries/LibCore/File.h
View File

@@ -57,6 +57,10 @@ public:
}; };
bool open(int fd, IODevice::OpenMode, ShouldCloseFileDescription); bool open(int fd, IODevice::OpenMode, ShouldCloseFileDescription);
static NonnullRefPtr<File> stdin();
static NonnullRefPtr<File> stdout();
static NonnullRefPtr<File> stderr();
private: private:
File(Object* parent = nullptr) File(Object* parent = nullptr)
: IODevice(parent) : IODevice(parent)