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

package routes

import (
	"bytes"
	"fmt"
	"html/template"
	"io"
	"net/http"
	"os"
	"path/filepath"
	"slices"
	"strings"

	"github.com/alecthomas/chroma/v2/formatters/html"
	"github.com/alecthomas/chroma/v2/lexers"
	"github.com/alecthomas/chroma/v2/styles"

	"github.com/pocka/legit/git"
)

func isGoModule(gr *git.GitRepo) bool {
	_, err := gr.FileContent("go.mod")
	return err == nil
}

func getDisplayName(name string) string {
	return strings.TrimSuffix(name, ".git")
}

func getDescription(path string) (desc string) {
	db, err := os.ReadFile(filepath.Join(path, "description"))
	if err == nil {
		desc = string(db)
	} else {
		desc = ""
	}
	return
}

func (d *deps) isUnlisted(name string) bool {
	return slices.Contains(d.c.Repo.Unlisted, name)
}

func (d *deps) isIgnored(name string) bool {
	return slices.Contains(d.c.Repo.Ignore, name)
}

type repoInfo struct {
	Git      *git.GitRepo
	Path     string
	Category string
}

func setContentDisposition(w http.ResponseWriter, name string) {
	h := "inline; filename=\"" + name + "\""
	w.Header().Add("Content-Disposition", h)
}

func setGZipMIME(w http.ResponseWriter) {
	setMIME(w, "application/gzip")
}

func setMIME(w http.ResponseWriter, mime string) {
	w.Header().Add("Content-Type", mime)
}

func countLines(r io.Reader) (int, error) {
	buf := make([]byte, 32*1024)
	bufLen := 0
	count := 0
	nl := []byte{'\n'}

	for {
		c, err := r.Read(buf)
		if c > 0 {
			bufLen += c
		}
		count += bytes.Count(buf[:c], nl)

		switch {
		case err == io.EOF:
			/* handle last line not having a newline at the end */
			if bufLen >= 1 && buf[(bufLen-1)%(32*1024)] != '\n' {
				count++
			}
			return count, nil
		case err != nil:
			return 0, err
		}
	}
}

func highlightCode(fileName string, code string, styleQuery string) (template.HTML, error) {
	lexer := lexers.Get(fileName)

	// Do not process if no appropriate highlighter was found.
	if lexer == nil {
		return "", nil
	}

	style := styles.Get(styleQuery)
	if style == nil {
		return "", fmt.Errorf("No chroma style found for '%s'", styleQuery)
	}

	formatter := html.New(html.WithClasses(true), html.ClassPrefix("chroma-"))

	iter, err := lexer.Tokenise(nil, code)
	if err != nil {
		return "", fmt.Errorf("Failed to tokenize code: %s", err)
	}

	var output bytes.Buffer
	err = formatter.Format(&output, style, iter)
	if err != nil {
		return "", fmt.Errorf("Failed to highlight code: %s", err)
	}

	return template.HTML(output.String()), nil
}