83 lines
1.6 KiB
Go
83 lines
1.6 KiB
Go
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package main
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import (
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"bytes"
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"encoding/json"
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"fmt"
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"log"
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"os"
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"os/exec"
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"regexp"
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"strings"
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)
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type Language struct {
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Name string `json:"name,omitempty"`
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Version string `json:"version,omitempty"`
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}
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type Languages struct {
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Languages []Language `json:"languages"`
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}
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var versionRegex = regexp.MustCompile("([0-9]+\\.[0-9]+\\.[0-9]+)")
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func updateVersions(){
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f, err := os.Create("versions.json")
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if err != nil {
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log.Println(err)
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return
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}
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defer f.Close()
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langs, err := getVersions()
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if err != nil {
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log.Println(err)
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return
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}
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res, err := json.Marshal(langs)
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if err != nil {
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log.Println(err)
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return
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}
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f.Write(res)
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}
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// get all the language and their current version
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func getVersions() ([]Language, error) {
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var languages []Language
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res, err := execVersionScript()
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if err != nil {
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return nil, err
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}
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languageInfo := strings.Split(res, "---")
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for _, v := range languageInfo {
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if len(v) < 2 {
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continue
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}
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name, version := getVersion(v)
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languages = append(languages, Language{
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Name: name,
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Version: version,
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})
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}
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return languages, nil
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}
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// run the script that retrieves all the language versions
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func execVersionScript() (string, error) {
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fmt.Println("running script")
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output := bytes.Buffer{}
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cmd := exec.Command("../lcx/versions")
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cmd.Stdout = &output
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err := cmd.Run()
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return strings.ToLower(output.String()), err
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}
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// return the language and its version
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// most of the time it is easy to get the name and version
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// but for some languages helper functions are used
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func getVersion(s string) (string, string) {
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lines := strings.Split(s, "\n")
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return lines[1], versionRegex.FindString(lines[2])
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}
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