forked from keith/ghs
/
ghs.go
161 lines (131 loc) · 3.38 KB
/
ghs.go
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package main
import (
"bytes"
"code.google.com/p/go.crypto/ssh/terminal"
"encoding/json"
"errors"
"flag"
"fmt"
"io/ioutil"
"log"
"net/http"
"os"
"strconv"
"strings"
"unicode/utf8"
)
const baseURL = "https://api.github.com/search/repositories"
const helpers = "&sort=stars&order=desc&page=1&per_page="
type Query struct {
Q string
Lang string
Limit int
}
func escapeSearch(s string) string {
return strings.Replace(s, " ", "+", -1)
}
func searchString(q Query) (string, error) {
var buffer bytes.Buffer
buffer.WriteString(baseURL)
if q.Q == "" {
return "", errors.New("You must enter a search query")
}
query := fmt.Sprintf("?q=%s", escapeSearch(q.Q))
buffer.WriteString(query)
if q.Lang != "" {
lang := fmt.Sprintf("+language:%s", q.Lang)
buffer.WriteString(lang)
}
other := fmt.Sprintf("%s%d", helpers, q.Limit)
buffer.WriteString(other)
return buffer.String(), nil
}
func repoString(u string, s int, l string) string {
url := strings.TrimPrefix(u, "https://github.com/")
w, _, _ := terminal.GetSize(0)
urlLen := utf8.RuneCountInString(url)
starLen := utf8.RuneCountInString(strconv.Itoa(s))
langLen := utf8.RuneCountInString(l)
// If the terminal has no width return an unformatted string
if w < 1 {
return fmt.Sprintf("%s %d %s\n", url, s, l)
}
spaceLen := w - urlLen - starLen - langLen - 1
if spaceLen < 1 {
spaceLen := w - starLen - langLen - 1
spaces := strings.Repeat(" ", spaceLen)
return fmt.Sprintf("%s\n%s%d %s\n", url, spaces, s, l)
}
spaces := strings.Repeat(" ", spaceLen)
return fmt.Sprintf("%s%s%d %s\n", url, spaces, s, l)
}
func requestSearch(url string, client *http.Client) (r *http.Response, e error) {
res, err := http.NewRequest("GET", url, nil)
if err != nil {
log.Fatal(err)
}
res.Header.Set("Accept", "application/vnd.github.preview")
return client.Do(res)
}
func printFromJSON(n int, b []byte) error {
var j map[string]interface{}
err := json.Unmarshal(b, &j)
if err != nil {
return err
}
if j == nil {
return errors.New("No matching repositories")
}
items := j["items"].([]interface{})
if len(items) < 1 {
return errors.New("No matching repositories")
}
for i := 0; i < len(items); i++ {
repo := items[i].(map[string]interface{})
// name := repo["name"].(string)
url := repo["html_url"].(string)
stars := int(repo["watchers"].(float64))
lang := repo["language"].(string)
fmt.Print(repoString(url, stars, lang))
}
return nil
}
var count int
var langNum string
const countDefault = 10
const countHelp = "The number of results to return"
const langHelp = "The language of the repo"
var Usage = func() {
fmt.Fprintf(os.Stderr, "Usage: %s [options] query\n", os.Args[0])
flag.PrintDefaults()
os.Exit(2)
}
func main() {
flag.Usage = Usage
flag.IntVar(&count, "count", countDefault, countHelp)
flag.IntVar(&count, "c", countDefault, countHelp+" (shorthand)")
flag.StringVar(&langNum, "lang", "", langHelp)
flag.StringVar(&langNum, "l", "", langHelp+"(shorthand)")
flag.Parse()
if flag.NArg() == 0 || flag.NArg() > 1 {
flag.Usage()
}
query := flag.Arg(0)
url, err := searchString(Query{query, langNum, count})
if err != nil {
log.Fatal(err)
}
client := &http.Client{}
res, err := requestSearch(url, client)
if err != nil {
log.Fatal(err)
}
buffer, err := ioutil.ReadAll(res.Body)
if err != nil {
log.Fatal(err)
}
err = printFromJSON(count, buffer)
if err != nil {
log.Fatal(err)
}
}