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/
main.go
147 lines (117 loc) · 2.74 KB
/
main.go
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package main
import (
"flag"
"fmt"
"os"
)
var (
cmdReplace = flag.NewFlagSet("replace", flag.ExitOnError)
cmdAdd = flag.NewFlagSet("add", flag.ExitOnError)
cmdRemove = flag.NewFlagSet("rm", flag.ExitOnError)
)
const GithubTokenEnvVar = "GH_ACCESS_TOKEN"
var usage = `Usage: topictool <subcommand> <search pattern> <topic labels...>
Replace, add or remove topic labels from multiple Github repositories
Subcommands:
- replace - replaces all existing topic labels with new ones
- add - adds topic labels to existing ones
- rm - removes topic labels from existing ones
Search Pattern:
Searches repositories via various criteria.
See Github docs: https://docs.github.com/en/free-pro-team@latest/rest/reference/search/#search-repositories
Topic Labels:
A list of strings representing topic labels
`
func main() {
flag.Usage = func() {
fmt.Fprint(os.Stderr, usage)
}
flag.Parse()
args := flag.Args()
if len(args) == 0 {
usageAndExit("Please enter a subcommand")
return
}
switch args[0] {
case "replace":
cmdReplace.Parse(args[1:])
replaceCmd()
case "add":
cmdAdd.Parse(args[1:])
addCmd()
case "rm":
cmdRemove.Parse(args[1:])
removeCmd()
default:
usageAndExit("Please enter a subcommand")
}
}
func replaceCmd() {
token := os.Getenv(GithubTokenEnvVar)
if token == "" {
usageAndExit(fmt.Sprintf("please provide a personal access token via %s env var", GithubTokenEnvVar))
}
tool := NewTopicTool(token)
args := cmdReplace.Args()
if len(args) < 2 {
usageAndExit("")
}
query := args[0]
topics := args[1:]
err := tool.ReplaceTopics(query, topics)
if err != nil {
fmt.Println(err)
os.Exit(1)
}
fmt.Println("Done!")
os.Exit(0)
}
func addCmd() {
token := os.Getenv(GithubTokenEnvVar)
if token == "" {
usageAndExit(fmt.Sprintf("please provide a personal access token via %s env var", GithubTokenEnvVar))
}
tool := NewTopicTool(token)
args := cmdAdd.Args()
if len(args) < 2 {
usageAndExit("")
}
query := args[0]
topics := args[1:]
err := tool.AddTopics(query, topics)
if err != nil {
fmt.Println(err)
os.Exit(1)
}
fmt.Println("Done!")
os.Exit(0)
}
func removeCmd() {
token := os.Getenv(GithubTokenEnvVar)
if token == "" {
usageAndExit(fmt.Sprintf("please provide a personal access token via %s env var", GithubTokenEnvVar))
}
tool := NewTopicTool(token)
args := cmdRemove.Args()
if len(args) < 2 {
usageAndExit("")
}
query := args[0]
topics := args[1:]
err := tool.RemoveTopics(query, topics)
if err != nil {
fmt.Println(err)
os.Exit(1)
}
fmt.Println("Done!")
os.Exit(0)
}
func usageAndExit(msg string) {
if msg != "" {
fmt.Fprintf(os.Stderr, msg)
fmt.Fprintf(os.Stderr, "\n\n")
}
flag.Usage()
fmt.Fprintf(os.Stderr, "\n")
os.Exit(1)
}