1. 1
2. 2
3. 3
4. 4
5. 5
6. 6
7. 7
8. 8
9. 9
10. 10
11. 11
12. 12
13. 13
14. 14
15. 15
16. 16
17. 17
18. 18
19. 19
20. 20
21. 21
22. 22
23. 23
24. 24
25. 25
26. 26
27. 27
28. 28
29. 29
30. 30
31. 31
32. 32
33. 33
34. 34
35. 35
36. 36
37. 37
38. 38
39. 39
40. 40
41. 41
42. 42
43. 43
44. 44
45. 45
46. 46
47. 47
48. 48
49. 49
50. 50
51. 51
52. 52
53. 53
54. 54
55. 55
56. 56
57. 57
58. 58
59. 59
60. 60
61. 61
62. 62
63. 63
64. 64
65. 65
66. 66
67. 67
68. 68
69. 69
70. 70
71. 71
72. 72
73. 73
74. 74
75. 75
76. 76
77. 77
78. 78
79. 79
80. 80
81. 81
82. 82
83. 83
84. 84
85. 85
86. 86
87. 87
88. 88
89. 89
90. 90
91. 91
92. 92
93. 93
94. 94
95. 95
96. 96
97. 97
98. 98
99. 99
100. 100
101. 101
102. 102
103. 103
104. 104
105. 105
106. 106
107. 107
108. 108
109. 109
110. 110
111. 111
112. 112
113. 113
114. 114
115. 115
116. 116
117. 117
118. 118
119. 119
120. 120
121. 121
122. 122
123. 123
124. 124
125. 125
126. 126
127. 127
128. 128
129. 129
130. 130
131. 131
132. 132
133. 133

// Copyright 2020 The Gitea Authors. All rights reserved.
// SPDX-License-Identifier: MIT

//go:build !gogit

package git

import (
	"io"
	"math"
	"strings"
)

// Tree represents a flat directory listing.
type Tree struct {
	ID         SHA1
	ResolvedID SHA1
	repo       *Repository

	// parent tree
	ptree *Tree

	entries       Entries
	entriesParsed bool

	entriesRecursive       Entries
	entriesRecursiveParsed bool
}

// ListEntries returns all entries of current tree.
func (t *Tree) ListEntries() (Entries, error) {
	if t.entriesParsed {
		return t.entries, nil
	}

	if t.repo != nil {
		wr, rd, cancel := t.repo.CatFileBatch(t.repo.Ctx)
		defer cancel()

		_, _ = wr.Write([]byte(t.ID.String() + "\n"))
		_, typ, sz, err := ReadBatchLine(rd)
		if err != nil {
			return nil, err
		}
		if typ == "commit" {
			treeID, err := ReadTreeID(rd, sz)
			if err != nil && err != io.EOF {
				return nil, err
			}
			_, _ = wr.Write([]byte(treeID + "\n"))
			_, typ, sz, err = ReadBatchLine(rd)
			if err != nil {
				return nil, err
			}
		}
		if typ == "tree" {
			t.entries, err = catBatchParseTreeEntries(t, rd, sz)
			if err != nil {
				return nil, err
			}
			t.entriesParsed = true
			return t.entries, nil
		}

		// Not a tree just use ls-tree instead
		for sz > math.MaxInt32 {
			discarded, err := rd.Discard(math.MaxInt32)
			sz -= int64(discarded)
			if err != nil {
				return nil, err
			}
		}
		for sz > 0 {
			discarded, err := rd.Discard(int(sz))
			sz -= int64(discarded)
			if err != nil {
				return nil, err
			}
		}
	}

	stdout, _, runErr := NewCommand(t.repo.Ctx, "ls-tree", "-l").AddDynamicArguments(t.ID.String()).RunStdBytes(&RunOpts{Dir: t.repo.Path})
	if runErr != nil {
		if strings.Contains(runErr.Error(), "fatal: Not a valid object name") || strings.Contains(runErr.Error(), "fatal: not a tree object") {
			return nil, ErrNotExist{
				ID: t.ID.String(),
			}
		}
		return nil, runErr
	}

	var err error
	t.entries, err = parseTreeEntries(stdout, t)
	if err == nil {
		t.entriesParsed = true
	}

	return t.entries, err
}

// listEntriesRecursive returns all entries of current tree recursively including all subtrees
// extraArgs could be "-l" to get the size, which is slower
func (t *Tree) listEntriesRecursive(extraArgs TrustedCmdArgs) (Entries, error) {
	if t.entriesRecursiveParsed {
		return t.entriesRecursive, nil
	}

	stdout, _, runErr := NewCommand(t.repo.Ctx, "ls-tree", "-t", "-r").
		AddArguments(extraArgs...).
		AddDynamicArguments(t.ID.String()).
		RunStdBytes(&RunOpts{Dir: t.repo.Path})
	if runErr != nil {
		return nil, runErr
	}

	var err error
	t.entriesRecursive, err = parseTreeEntries(stdout, t)
	if err == nil {
		t.entriesRecursiveParsed = true
	}

	return t.entriesRecursive, err
}

// ListEntriesRecursiveFast returns all entries of current tree recursively including all subtrees, no size
func (t *Tree) ListEntriesRecursiveFast() (Entries, error) {
	return t.listEntriesRecursive(nil)
}

// ListEntriesRecursiveWithSize returns all entries of current tree recursively including all subtrees, with size
func (t *Tree) ListEntriesRecursiveWithSize() (Entries, error) {
	return t.listEntriesRecursive(TrustedCmdArgs{"--long"})
}