1package main
 2
 3import (
 4	"archive/tar"
 5	"bufio"
 6	"compress/gzip"
 7	"errors"
 8	"fmt"
 9	"io"
10	"net/http"
11	"os"
12
13	"git.sr.ht/~gabrielgio/apkdoc/parser"
14	flag "github.com/spf13/pflag"
15)
16
17func main() {
18	url := flag.StringP("url", "u", "", "Url to the APKINDEX.tar.gz")
19	output := flag.StringP("output", "o", "index.md", "Output path")
20	repositoryFormat := flag.StringP("repository-format", "f", "https://git.sr.ht/~gabrielgio/apkbuilds/tree/%s/item/apks/%s", "Template to build repository link")
21	flag.Parse()
22
23	tarStream, err := fechIndex(*url)
24	if err != nil {
25		panic("Error fecthing the index: " + err.Error())
26	}
27
28	defer tarStream.Close()
29
30	archive, err := gzip.NewReader(tarStream)
31	if err != nil {
32		panic("Error creating gzip reader: " + err.Error())
33	}
34
35	tr := tar.NewReader(archive)
36
37	for {
38		h, err := tr.Next()
39		if err != nil {
40			panic("Error reading next tar entry: " + err.Error())
41		}
42
43		if h.FileInfo().Name() == "APKINDEX" {
44			break
45		}
46	}
47
48	s := bufio.NewScanner(tr)
49
50	entries := make([]*parser.Entry, 0)
51	lines := make([]string, 0)
52
53	for s.Scan() {
54		l := s.Text()
55		if l == "" {
56			entry := parser.Parse(lines)
57			entries = append(entries, entry)
58			lines = make([]string, 0)
59		} else {
60			lines = append(lines, l)
61		}
62	}
63
64	outputFile, err := getOutputFile(*output)
65	if err != nil {
66		panic("Error openning output file: " + err.Error())
67	}
68
69	for _, e := range entries {
70		fmt.Fprintln(outputFile, e.FomartLink(*repositoryFormat))
71	}
72}
73
74func getOutputFile(output string) (*os.File, error) {
75	if output == "" {
76		outputFile, err := os.Create(output)
77		if err != nil {
78			return nil, err
79		}
80		return outputFile, nil
81	} else {
82		return os.Stdout, nil
83	}
84}
85
86func fechIndex(url string) (io.ReadCloser, error) {
87	resp, err := http.Get(url)
88	if err != nil {
89		return nil, err
90	}
91
92	if resp.StatusCode != 200 {
93		return nil, errors.New("Invlid response")
94	}
95
96	return resp.Body, nil
97}