149 lines
3.6 KiB
Go
149 lines
3.6 KiB
Go
package cli
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import (
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"fmt"
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"io"
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"os"
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"github.com/spf13/cobra"
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)
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// readStdin reads all of stdin, printing a hint if the input is a terminal.
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func readStdin() (string, error) {
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if isTerminal(os.Stdin) {
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fmt.Fprintln(os.Stderr, "Reading from stdin, press Ctrl-D when done.")
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}
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data, err := io.ReadAll(os.Stdin)
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if err != nil {
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return "", fmt.Errorf("reading stdin: %w", err)
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}
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return string(data), nil
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}
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// evalAndFormat runs a Lua script via conn and formats the output.
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func evalAndFormat(cmd *cobra.Command, conn *SpaceConnection, script string) error {
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result, err := conn.EvalLuaScript(script)
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if err != nil {
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return err
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}
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return FormatOutput(os.Stdout, result, OutputModeFromCmd(cmd))
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}
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func EvalCommand() *cobra.Command {
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cmd := &cobra.Command{
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Use: "eval <expression>",
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Short: "Evaluate a Lua expression",
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Args: cobra.ExactArgs(1),
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RunE: func(cmd *cobra.Command, args []string) error {
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conn, err := connFromFlags(cmd)
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if err != nil {
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return err
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}
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result, err := conn.EvalLua(args[0])
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if err != nil {
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return err
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}
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return FormatOutput(os.Stdout, result, OutputModeFromCmd(cmd))
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},
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}
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return cmd
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}
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// LuaCommand returns a hidden alias for EvalCommand (backward compat).
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func LuaCommand() *cobra.Command {
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cmd := EvalCommand()
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cmd.Use = "lua <expression>"
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cmd.Hidden = true
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return cmd
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}
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func ScriptCommand() *cobra.Command {
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var filePath string
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cmd := &cobra.Command{
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Use: "script [code]",
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Short: "Execute a Lua script from inline code, file, or stdin",
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Args: cobra.MaximumNArgs(1),
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RunE: func(cmd *cobra.Command, args []string) error {
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conn, err := connFromFlags(cmd)
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if err != nil {
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return err
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}
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var script string
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if filePath != "" {
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data, err := os.ReadFile(filePath)
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if err != nil {
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return fmt.Errorf("reading %s: %w", filePath, err)
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}
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script = string(data)
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} else if len(args) > 0 {
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script = args[0]
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} else {
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script, err = readStdin()
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if err != nil {
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return err
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}
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}
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return evalAndFormat(cmd, conn, script)
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},
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}
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cmd.Flags().StringVarP(&filePath, "file", "f", "", "Read script from file")
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return cmd
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}
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// LuaScriptCommand returns a hidden alias preserving old behavior:
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// positional arg is a file path (not inline code).
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func LuaScriptCommand() *cobra.Command {
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cmd := &cobra.Command{
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Use: "lua-script [file]",
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Short: "Execute a Lua script from file or stdin",
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Args: cobra.MaximumNArgs(1),
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Hidden: true,
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RunE: func(cmd *cobra.Command, args []string) error {
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conn, err := connFromFlags(cmd)
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if err != nil {
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return err
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}
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var script string
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if len(args) > 0 {
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data, err := os.ReadFile(args[0])
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if err != nil {
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return fmt.Errorf("reading %s: %w", args[0], err)
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}
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script = string(data)
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} else {
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script, err = readStdin()
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if err != nil {
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return err
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}
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}
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return evalAndFormat(cmd, conn, script)
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},
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}
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return cmd
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}
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func QueryCommand() *cobra.Command {
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cmd := &cobra.Command{
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Use: "query <sliq-expression>",
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Short: "Run a query (wraps in query[[...]])",
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Long: "Evaluate a Space Lua Integrated Query. The argument is the query body.\nExample: sb query 'from t = index.tag \"task\" where not t.done'",
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Args: cobra.ExactArgs(1),
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RunE: func(cmd *cobra.Command, args []string) error {
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conn, err := connFromFlags(cmd)
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if err != nil {
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return err
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}
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return evalAndFormat(cmd, conn, "return query[["+args[0]+"]]")
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},
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}
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return cmd
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}
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func isTerminal(f *os.File) bool {
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fi, err := f.Stat()
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if err != nil {
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return false
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}
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return (fi.Mode() & os.ModeCharDevice) != 0
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}
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