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Shell: Rename {source,dest}_fd to {old,new}_fd

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This makes `Rewiring' much more understandable, and un-confuses the uses
of `dup2()'.
Also fixes `dup2()' bugs.
This commit is contained in:
AnotherTest 2020-10-27 21:38:37 +03:30 • committed by Andreas Kling
parent 0bc758d34a
commit f4b7a688b1
4 changed files with 74 additions and 54 deletions
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49
Shell/AST.h
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@ -63,27 +63,28 @@ struct Position {
struct FdRedirection;
struct Rewiring : public RefCounted<Rewiring> {
int source_fd { -1 };
int dest_fd { -1 };
int old_fd { -1 };
int new_fd { -1 };
FdRedirection* other_pipe_end { nullptr };
enum class Close {
None,
Source,
Destination,
RefreshDestination,
ImmediatelyCloseDestination,
Old,
New,
RefreshNew,
RefreshOld,
ImmediatelyCloseNew,
} fd_action { Close::None };
Rewiring(int source, int dest, Close close = Close::None)
: source_fd(source)
, dest_fd(dest)
: old_fd(source)
, new_fd(dest)
, fd_action(close)
{
}
Rewiring(int source, int dest, FdRedirection* other_end, Close close)
: source_fd(source)
, dest_fd(dest)
: old_fd(source)
, new_fd(dest)
, other_pipe_end(other_end)
, fd_action(close)
{
@ -143,25 +144,25 @@ private:
struct FdRedirection : public Redirection {
public:
static NonnullRefPtr<FdRedirection> create(int source, int dest, Rewiring::Close close)
static NonnullRefPtr<FdRedirection> create(int old_fd, int new_fd, Rewiring::Close close)
{
return adopt(*new FdRedirection(source, dest, close));
return adopt(*new FdRedirection(old_fd, new_fd, close));
}
static NonnullRefPtr<FdRedirection> create(int source, int dest, FdRedirection* pipe_end, Rewiring::Close close)
static NonnullRefPtr<FdRedirection> create(int old_fd, int new_fd, FdRedirection* pipe_end, Rewiring::Close close)
{
return adopt(*new FdRedirection(source, dest, pipe_end, close));
return adopt(*new FdRedirection(old_fd, new_fd, pipe_end, close));
}
virtual ~FdRedirection();
virtual Result<NonnullRefPtr<Rewiring>, String> apply() const override
{
return adopt(*new Rewiring(source_fd, dest_fd, other_pipe_end, action));
return adopt(*new Rewiring(old_fd, new_fd, other_pipe_end, action));
}
int source_fd { -1 };
int dest_fd { -1 };
int old_fd { -1 };
int new_fd { -1 };
FdRedirection* other_pipe_end { nullptr };
Rewiring::Close action { Rewiring::Close::None };
@ -171,9 +172,9 @@ private:
{
}
FdRedirection(int source, int dest, FdRedirection* pipe_end, Rewiring::Close close)
: source_fd(source)
, dest_fd(dest)
FdRedirection(int old_fd, int new_fd, FdRedirection* pipe_end, Rewiring::Close close)
: old_fd(old_fd)
, new_fd(new_fd)
, other_pipe_end(pipe_end)
, action(close)
{
@ -748,8 +749,8 @@ public:
virtual ~Fd2FdRedirection();
virtual void visit(NodeVisitor& visitor) override { visitor.visit(this); }
int source_fd() const { return m_source_fd; }
int dest_fd() const { return m_dest_fd; }
int source_fd() const { return m_old_fd; }
int dest_fd() const { return m_new_fd; }
private:
NODE(Fd2FdRedirection);
@ -758,8 +759,8 @@ private:
virtual void highlight_in_editor(Line::Editor&, Shell&, HighlightMetadata = {}) override;
virtual bool is_command() const override { return true; }
int m_source_fd { -1 };
int m_dest_fd { -1 };
int m_old_fd { -1 };
int m_new_fd { -1 };
};
class FunctionDeclaration final : public Node {