77 lines
1.7 KiB
Go
77 lines
1.7 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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"fmt"
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"io/fs"
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"os"
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"path/filepath"
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"strings"
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"golang.org/x/sys/unix"
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)
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var _ = fmt.Print
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type CompleteFilesCallback func(completion_candidate string, abspath string, d fs.DirEntry) error
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func complete_files(prefix string, callback CompleteFilesCallback) error {
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base := "."
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base_len := len(base) + 1
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has_cwd_prefix := strings.HasPrefix(prefix, "./")
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is_abs_path := filepath.IsAbs(prefix)
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wd := ""
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if is_abs_path {
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base = prefix
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base_len = 0
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if s, err := os.Stat(prefix); err != nil || !s.IsDir() {
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base = filepath.Dir(prefix)
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}
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} else {
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wd, _ = os.Getwd()
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}
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filepath.WalkDir(base, func(path string, d fs.DirEntry, err error) error {
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if err != nil {
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return nil
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}
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if path == base {
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return nil
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}
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completion_candidate := path
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abspath := path
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if is_abs_path {
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completion_candidate = path[base_len:]
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} else {
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abspath = filepath.Join(wd, path)
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if has_cwd_prefix {
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completion_candidate = "./" + completion_candidate
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}
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}
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if strings.HasPrefix(completion_candidate, prefix) {
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return callback(completion_candidate, abspath, d)
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}
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return nil
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})
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return nil
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}
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func complete_executables_in_path(prefix string, paths ...string) []string {
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ans := make([]string, 0, 1024)
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if len(paths) == 0 {
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paths = filepath.SplitList(os.Getenv("PATH"))
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}
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for _, dir := range paths {
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entries, err := os.ReadDir(dir)
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if err == nil {
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for _, e := range entries {
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if strings.HasPrefix(e.Name(), prefix) && !e.IsDir() && unix.Access(filepath.Join(dir, e.Name()), unix.X_OK) == nil {
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ans = append(ans, e.Name())
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}
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}
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}
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}
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return ans
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}
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