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LibCore: Add standard_{output, input, error} functions to File::Stream

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This commit is contained in:
davidot 2022-09-13 23:52:57 +02:00 • committed by Andrew Kaster
parent e0cccaa583
commit d9360676cd
2 changed files with 18 additions and 2 deletions
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17
Userland/Libraries/LibCore/Stream.cpp
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@ -148,6 +148,19 @@ bool File::exists(StringView filename)
return !Core::System::stat(filename).is_error(); return !Core::System::stat(filename).is_error();
} }
ErrorOr<NonnullOwnPtr<File>> File::standard_input()
{
return File::adopt_fd(STDIN_FILENO, OpenMode::Read, ShouldCloseFileDescriptor::No);
}
ErrorOr<NonnullOwnPtr<File>> File::standard_output()
{
return File::adopt_fd(STDOUT_FILENO, OpenMode::Write, ShouldCloseFileDescriptor::No);
}
ErrorOr<NonnullOwnPtr<File>> File::standard_error()
{
return File::adopt_fd(STDERR_FILENO, OpenMode::Write, ShouldCloseFileDescriptor::No);
}
ErrorOr<NonnullOwnPtr<File>> File::open_file_or_standard_stream(StringView filename, OpenMode mode) ErrorOr<NonnullOwnPtr<File>> File::open_file_or_standard_stream(StringView filename, OpenMode mode)
{ {
if (!filename.is_empty() && filename != "-"sv) if (!filename.is_empty() && filename != "-"sv)
@ -155,9 +168,9 @@ ErrorOr<NonnullOwnPtr<File>> File::open_file_or_standard_stream(StringView filen
switch (mode) { switch (mode) {
case OpenMode::Read: case OpenMode::Read:
return File::adopt_fd(STDIN_FILENO, mode); return standard_input();
case OpenMode::Write: case OpenMode::Write:
return File::adopt_fd(STDOUT_FILENO, mode); return standard_output();
default: default:
VERIFY_NOT_REACHED(); VERIFY_NOT_REACHED();
} }

3
Userland/Libraries/LibCore/Stream.h
View file

@ -198,6 +198,9 @@ public:
static ErrorOr<NonnullOwnPtr<File>> adopt_fd(int fd, OpenMode, ShouldCloseFileDescriptor = ShouldCloseFileDescriptor::Yes); static ErrorOr<NonnullOwnPtr<File>> adopt_fd(int fd, OpenMode, ShouldCloseFileDescriptor = ShouldCloseFileDescriptor::Yes);
static bool exists(StringView filename); static bool exists(StringView filename);
static ErrorOr<NonnullOwnPtr<File>> standard_input();
static ErrorOr<NonnullOwnPtr<File>> standard_output();
static ErrorOr<NonnullOwnPtr<File>> standard_error();
static ErrorOr<NonnullOwnPtr<File>> open_file_or_standard_stream(StringView filename, OpenMode mode); static ErrorOr<NonnullOwnPtr<File>> open_file_or_standard_stream(StringView filename, OpenMode mode);
File(File&& other) { operator=(move(other)); } File(File&& other) { operator=(move(other)); }