99 lines
2.6 KiB
Go
99 lines
2.6 KiB
Go
// License: GPLv3 Copyright: 2022, Kovid Goyal, <kovid at kovidgoyal.net>
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package completion
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import (
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"encoding/json"
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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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"kitty/tools/cli"
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"kitty/tools/utils"
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)
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func json_input_parser(data []byte, shell_state map[string]string) ([][]string, error) {
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ans := make([][]string, 0, 32)
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err := json.Unmarshal(data, &ans)
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return ans, err
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}
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func json_output_serializer(completions []*Completions, shell_state map[string]string) ([]byte, error) {
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return json.Marshal(completions)
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}
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type parser_func func(data []byte, shell_state map[string]string) ([][]string, error)
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type serializer_func func(completions []*Completions, shell_state map[string]string) ([]byte, error)
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var input_parsers = make(map[string]parser_func, 4)
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var output_serializers = make(map[string]serializer_func, 4)
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func init() {
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input_parsers["json"] = json_input_parser
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output_serializers["json"] = json_output_serializer
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}
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var registered_exes = make(map[string]func(root *Command))
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func main(args []string) error {
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output_type := "json"
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if len(args) > 0 {
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output_type = args[0]
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args = args[1:]
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}
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n := len(args)
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if n < 1 {
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n = 1
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}
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shell_state := make(map[string]string, n)
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for _, arg := range args {
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k, v, found := utils.Cut(arg, "=")
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if !found {
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return fmt.Errorf("Invalid shell state specification: %s", arg)
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}
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shell_state[k] = v
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}
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input_parser := input_parsers[output_type]
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output_serializer := output_serializers[output_type]
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if input_parser == nil || output_serializer == nil {
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return fmt.Errorf("Unknown output type: %s", output_type)
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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 err
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}
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all_argv, err := input_parser(data, shell_state)
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if err != nil {
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return err
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}
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var root = Command{Options: make([]*Option, 0), Groups: make([]*CommandGroup, 0, 8)}
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for _, re := range registered_exes {
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re(&root)
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}
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all_completions := make([]*Completions, 0, 1)
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for _, argv := range all_argv {
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all_completions = append(all_completions, root.GetCompletions(argv))
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}
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output, err := output_serializer(all_completions, shell_state)
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if err == nil {
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_, err = os.Stdout.Write(output)
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}
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return err
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}
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func EntryPoint(tool_root *cobra.Command) *cobra.Command {
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complete_command := cli.CreateCommand(&cobra.Command{
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Use: "__complete__ output_type [shell state...]",
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Short: "Generate completions for kitty commands",
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Long: "Generate completion candidates for kitty commands. The command line is read from STDIN. output_type can be one of the supported shells or 'json' for JSON output.",
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Hidden: true,
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RunE: func(cmd *cobra.Command, args []string) error {
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return main(args)
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},
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})
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return complete_command
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}
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