1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
|
// Copyright (C) 2017 Luke Shumaker <lukeshu@lukeshu.com>
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with this program. If not, see <https://www.gnu.org/licenses/>.
package libfastimport
import (
"strconv"
"strings"
"github.com/pkg/errors"
)
func cbpGetMark(line string) (string, error) {
if len(line) != 41 {
return "", errors.Errorf("get-mark: short <sha1>\\n: %q", line)
}
if line[40] != '\n' {
return "", errors.Errorf("get-mark: malformed <sha1>\\n: %q", line)
}
for _, b := range line[:40] {
if !(('0' <= b && b <= '9') || ('a' <= b && b <= 'f')) {
return "", errors.Errorf("get-mark: malformed <sha1>: %q", line[:40])
}
}
return line[:40], nil
}
func cbpCatBlob(full string) (sha1 string, data string, err error) {
// The format is:
//
// <sha1> SP 'blob' SP <size> LF
// <data> LF
if full[len(full)-1] != '\n' {
return "", "", errors.Errorf("cat-blob: missing trailing newline")
}
lf := strings.IndexByte(full, '\n')
if lf < 0 || lf == len(full)-1 {
return "", "", errors.Errorf("cat-blob: malformed header: %q", full)
}
head := full[:lf]
data = full[lf+1 : len(full)-1]
if len(head) < 40+6+1 {
return "", "", errors.Errorf("cat-blob: malformed header: %q", head)
}
sha1 = head[:40]
for _, b := range sha1 {
if !(('0' <= b && b <= '9') || ('a' <= b && b <= 'f')) {
return "", "", errors.Errorf("cat-blob: malformed <sha1>: %q", sha1)
}
}
if string(head[40:46]) != " blob " {
return "", "", errors.Errorf("cat-blob: malformed header: %q", head)
}
size, err := strconv.Atoi(head[46:])
if err != nil {
return "", "", errors.Wrap(err, "cat-blob: malformed blob size")
}
if size != len(data) {
return "", "", errors.Errorf("cat-blob: size header (%d) didn't match delivered size (%d)", size, len(data))
}
return sha1, data, err
}
func cbpLs(line string) (mode Mode, dataref string, path Path, err error) {
// <mode> SP ('blob' | 'tree' | 'commit') SP <dataref> HT <path> LF
// or
// 'missing' SP <path> LF
if line[len(line)-1] != '\n' {
return 0, "", "", errors.New("ls: missing trailing newline")
}
line = line[:len(line)-1]
if strings.HasPrefix(line, "missing ") {
strPath := line[8:]
return 0, "", PathUnescape(strPath), nil
} else {
fields := strings.SplitN(line, " ", 3)
if len(fields) < 3 {
return 0, "", "", errors.Errorf("ls: malformed line: %q", line)
}
ht := strings.IndexByte(fields[2], '\t')
if ht < 0 {
return 0, "", "", errors.Errorf("ls: malformed line: %q", line)
}
strMode := fields[0]
//strType := fields[1]
strRef := fields[2][:ht]
strPath := fields[2][ht+1:]
nMode, err := strconv.ParseUint(strMode, 8, 18)
if err != nil {
return 0, "", "", err
}
return Mode(nMode), strRef, PathUnescape(strPath), nil
}
}
|
