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102 lines
2.4 KiB
Go
102 lines
2.4 KiB
Go
package complete
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import (
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"os"
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"path/filepath"
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"strings"
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"unicode"
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)
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// Args describes command line arguments
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type Args struct {
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// All lists of all arguments in command line (not including the command itself)
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All []string
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// Completed lists of all completed arguments in command line,
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// If the last one is still being typed - no space after it,
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// it won't appear in this list of arguments.
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Completed []string
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// Last argument in command line, the one being typed, if the last
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// character in the command line is a space, this argument will be empty,
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// otherwise this would be the last word.
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Last string
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// LastCompleted is the last argument that was fully typed.
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// If the last character in the command line is space, this would be the
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// last word, otherwise, it would be the word before that.
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LastCompleted string
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}
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// Directory gives the directory of the current written
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// last argument if it represents a file name being written.
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// in case that it is not, we fall back to the current directory.
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func (a Args) Directory() string {
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if info, err := os.Stat(a.Last); err == nil && info.IsDir() {
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return fixPathForm(a.Last, a.Last)
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}
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dir := filepath.Dir(a.Last)
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if info, err := os.Stat(dir); err != nil || !info.IsDir() {
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return "./"
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}
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return fixPathForm(a.Last, dir)
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}
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func newArgs(line string) Args {
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var (
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all []string
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completed []string
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)
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parts := splitFields(line)
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if len(parts) > 0 {
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all = parts[1:]
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completed = removeLast(parts[1:])
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}
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return Args{
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All: all,
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Completed: completed,
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Last: last(parts),
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LastCompleted: last(completed),
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}
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}
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func splitFields(line string) []string {
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parts := strings.Fields(line)
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if len(line) > 0 && unicode.IsSpace(rune(line[len(line)-1])) {
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parts = append(parts, "")
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}
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parts = splitLastEqual(parts)
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return parts
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}
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func splitLastEqual(line []string) []string {
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if len(line) == 0 {
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return line
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}
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parts := strings.Split(line[len(line)-1], "=")
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return append(line[:len(line)-1], parts...)
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}
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func (a Args) from(i int) Args {
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if i > len(a.All) {
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i = len(a.All)
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}
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a.All = a.All[i:]
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if i > len(a.Completed) {
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i = len(a.Completed)
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}
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a.Completed = a.Completed[i:]
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return a
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}
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func removeLast(a []string) []string {
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if len(a) > 0 {
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return a[:len(a)-1]
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}
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return a
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}
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func last(args []string) string {
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if len(args) == 0 {
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return ""
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}
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return args[len(args)-1]
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}
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