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import ( "context" "io" "os/exec")
// Client runs git commands with configurable output sinks.type Client struct { Stdout io.Writer Stderr io.Writer}
// NewClient returns a git client connected to the supplied output sinks.// Nil sinks discard command output.func NewClient(stdout, stderr io.Writer) *Client { return &Client{Stdout: stdout, Stderr: stderr}}
func (c *Client) writers() (io.Writer, io.Writer) { if c == nil { return io.Discard, io.Discard } stdout, stderr := c.Stdout, c.Stderr if stdout == nil { stdout = io.Discard } if stderr == nil { stderr = io.Discard } return stdout, stderr}
// run executes a command in the foreground, connected to the client's sinks.func (c *Client) run(ctx context.Context, name string, args ...string) error { cmd := exec.CommandContext(ctx, name, args...) cmd.Stdout, cmd.Stderr = c.writers() return cmd.Run()}
// runIn is like run but sets the working directory to dir.func (c *Client) runIn(dir string, ctx context.Context, name string, args ...string) error { cmd := exec.CommandContext(ctx, name, args...) cmd.Dir = dir cmd.Stdout, cmd.Stderr = c.writers() return cmd.Run()}
var defaultClient = NewClient(nil, nil)
func run(ctx context.Context, name string, args ...string) error { return defaultClient.run(ctx, name, args...)}
func runIn(dir string, ctx context.Context, name string, args ...string) error { return defaultClient.runIn(dir, ctx, name, args...)}