1 files changed, 88 insertions, 0 deletions
diff --git a/parser/parser.go b/parser/parser.go
new file mode 100644
index 0000000..8996b8c
--- /dev/null
+++ b/parser/parser.go
@@ -0,0 +1,88 @@
+package parser
+
+import (
+	"strconv"
+	"strings"
+	"time"
+)
+
+type (
+	// https://wiki.alpinelinux.org/wiki/Apk_spec
+	Entry struct {
+		Checksum         string     // C
+		Version          string     // V
+		Name             string     // P
+		Architecture     *string    // A
+		PackageSize      int        // S
+		InstalledSize    int        // I
+		Description      string     // T
+		Url              string     // U
+		License          string     // L
+		Origin           *string    // o
+		Maintainer       *string    // m
+		BuildTime        *time.Time // t
+		Commit           *string    // c
+		ProviderPriority *int       // k
+		Dependencies     []string   // D
+		Provides         []string   // p
+		InstallIf        []string   // i
+	}
+)
+
+func ptr[T any](v T) *T {
+	return &v
+}
+
+func split(line string) (string, string) {
+	parts := strings.SplitN(line, ":", 2)
+	return parts[0], parts[1]
+}
+
+func toInt(v string) int {
+	i, _ := strconv.Atoi(v)
+	return i
+}
+
+func Parse(lines []string) *Entry {
+	entry := &Entry{}
+	for _, line := range lines {
+		r, c := split(line)
+		switch r {
+		case "C":
+			entry.Checksum = c
+		case "V":
+			entry.Version = c
+		case "P":
+			entry.Name = c
+		case "A":
+			entry.Architecture = &c
+		case "S":
+			entry.PackageSize = toInt(c)
+		case "I":
+			entry.InstalledSize = toInt(c)
+		case "T":
+			entry.Description = c
+		case "U":
+			entry.Url = c
+		case "L":
+			entry.License = c
+		case "o":
+			entry.Origin = &c
+		case "m":
+			entry.Maintainer = &c
+		case "t":
+			entry.BuildTime = ptr(time.Unix(int64(toInt(c)), 0))
+		case "c":
+			entry.Commit = &c
+		case "k":
+			entry.ProviderPriority = ptr(toInt(c))
+		case "D":
+			entry.Dependencies = strings.Split(c, " ")
+		case "p":
+			entry.Dependencies = strings.Split(c, " ")
+		case "i":
+			entry.Dependencies = strings.Split(c, " ")
+		}
+	}
+	return entry
+}