1package parser
 2
 3import (
 4	"fmt"
 5	"strconv"
 6	"strings"
 7	"time"
 8)
 9
10type (
11	// https://wiki.alpinelinux.org/wiki/Apk_spec
12	Entry struct {
13		Checksum         string     // C
14		Version          string     // V
15		Name             string     // P
16		Architecture     *string    // A
17		PackageSize      int        // S
18		InstalledSize    int        // I
19		Description      string     // T
20		Url              string     // U
21		License          string     // L
22		Origin           *string    // o
23		Maintainer       *string    // m
24		BuildTime        *time.Time // t
25		Commit           *string    // c
26		ProviderPriority *int       // k
27		Dependencies     []string   // D
28		Provides         []string   // p
29		InstallIf        []string   // i
30	}
31)
32
33func (e *Entry) FomartLink(format string) string {
34	c := strings.Replace(*e.Commit, "-dirty", "", -1)
35	return fmt.Sprintf(format, c, *e.Origin)
36}
37
38func ptr[T any](v T) *T {
39	return &v
40}
41
42func split(line string) (string, string) {
43	parts := strings.SplitN(line, ":", 2)
44	return parts[0], parts[1]
45}
46
47func toInt(v string) int {
48	i, _ := strconv.Atoi(v)
49	return i
50}
51
52func Parse(lines []string) *Entry {
53	entry := &Entry{}
54	for _, line := range lines {
55		r, c := split(line)
56		switch r {
57		case "C":
58			entry.Checksum = c
59		case "V":
60			entry.Version = c
61		case "P":
62			entry.Name = c
63		case "A":
64			entry.Architecture = &c
65		case "S":
66			entry.PackageSize = toInt(c)
67		case "I":
68			entry.InstalledSize = toInt(c)
69		case "T":
70			entry.Description = c
71		case "U":
72			entry.Url = c
73		case "L":
74			entry.License = c
75		case "o":
76			entry.Origin = &c
77		case "m":
78			entry.Maintainer = &c
79		case "t":
80			entry.BuildTime = ptr(time.Unix(int64(toInt(c)), 0))
81		case "c":
82			entry.Commit = &c
83		case "k":
84			entry.ProviderPriority = ptr(toInt(c))
85		case "D":
86			entry.Dependencies = strings.Split(c, " ")
87		case "p":
88			entry.Dependencies = strings.Split(c, " ")
89		case "i":
90			entry.Dependencies = strings.Split(c, " ")
91		}
92	}
93	return entry
94}