fork of https://github.com/sourcegraph/zoekt
1// Copyright 2016 Google Inc. All rights reserved.
2//
3// Licensed under the Apache License, Version 2.0 (the "License");
4// you may not use this file except in compliance with the License.
5// You may obtain a copy of the License at
6//
7// http://www.apache.org/licenses/LICENSE-2.0
8//
9// Unless required by applicable law or agreed to in writing, software
10// distributed under the License is distributed on an "AS IS" BASIS,
11// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12// See the License for the specific language governing permissions and
13// limitations under the License.
14
15package ctags
16
17import (
18 "fmt"
19 "strconv"
20 "strings"
21)
22
23// Parse parses a single line of exuberant "ctags -n" output.
24func Parse(in string) (*Entry, error) {
25 fields := strings.Split(in, "\t")
26 e := Entry{}
27
28 if len(fields) < 3 {
29 return nil, fmt.Errorf("too few fields: %q", in)
30 }
31
32 e.Name = fields[0]
33 e.Path = fields[1]
34
35 lstr := fields[2]
36 if len(lstr) < 2 {
37 return nil, fmt.Errorf("got %q for linenum field", lstr)
38 }
39
40 l, err := strconv.ParseInt(lstr[:len(lstr)-2], 10, 64)
41 if err != nil {
42 return nil, err
43 }
44 e.Line = int(l)
45 e.Kind = fields[3]
46
47field:
48 for _, f := range fields[3:] {
49 if string(f) == "file:" {
50 e.FileLimited = true
51 }
52 for _, p := range []string{"class", "enum"} {
53 if strings.HasPrefix(f, p+":") {
54 e.Parent = strings.TrimPrefix(f, p+":")
55 e.ParentKind = p
56 continue field
57 }
58 }
59 }
60 return &e, nil
61}