added SPM

spm/appindex.go

@@ -0,0 +1,108 @@
+package spm
+
+import (
+	"bufio"
+	"io"
+	"net/http"
+	"os"
+	"strings"
+)
+
+const appIndexURL = "https://downloads.sourceforge.net/project/spitfire-browser/APPINDEX"
+
+func DownloadAppIndex(dest string) error {
+	UpdateProgress(0, "Downloading APPINDEX")
+	resp, err := http.Get(appIndexURL)
+	if err != nil {
+		return err
+	}
+	defer resp.Body.Close()
+
+	out, err := os.Create(dest)
+	if err != nil {
+		return err
+	}
+	defer out.Close()
+
+	totalSize := resp.ContentLength
+	var downloaded int64
+
+	// Track progress as bytes are downloaded
+	buf := make([]byte, 1024)
+	for {
+		n, err := resp.Body.Read(buf)
+		if n > 0 {
+			downloaded += int64(n)
+			percentage := int(float64(downloaded) / float64(totalSize) * 100)
+			UpdateProgress(percentage, "Downloading APPINDEX")
+			if _, err := out.Write(buf[:n]); err != nil {
+				return err
+			}
+		}
+		if err == io.EOF {
+			break
+		}
+		if err != nil {
+			return err
+		}
+	}
+
+	UpdateProgress(100, "APPINDEX downloaded")
+	return nil
+}
+
+type AppIndexEntry struct {
+	Name        string
+	Version     string
+	Release     string
+	Arch        string
+	OS          string
+	DownloadURL string
+}
+
+func ParseAppIndex(filePath string) ([]AppIndexEntry, error) {
+	file, err := os.Open(filePath)
+	if err != nil {
+		return nil, err
+	}
+	defer file.Close()
+
+	var entries []AppIndexEntry
+	scanner := bufio.NewScanner(file)
+	entry := AppIndexEntry{}
+
+	for scanner.Scan() {
+		line := scanner.Text()
+		if strings.HasPrefix(line, "C:") {
+			if entry.Name != "" {
+				entries = append(entries, entry)
+				entry = AppIndexEntry{}
+			}
+		}
+		parts := strings.SplitN(line, ":", 2)
+		if len(parts) < 2 {
+			continue
+		}
+
+		switch parts[0] {
+		case "P":
+			entry.Name = parts[1]
+		case "R":
+			entry.Release = parts[1]
+		case "V":
+			entry.Version = parts[1]
+		case "A":
+			entry.Arch = parts[1]
+		case "p":
+			entry.OS = parts[1]
+		case "d":
+			entry.DownloadURL = parts[1]
+		}
+	}
+
+	if entry.Name != "" {
+		entries = append(entries, entry)
+	}
+
+	return entries, scanner.Err()
+}