add command parsing

flags.go

@@ -0,0 +1,49 @@
+// Copyright (C) 2021 nytpu
+// SPDX-License-Identifier: AGPL-3.0-or-later
+// For more license details, see LICENSE or <https://www.gnu.org/licenses/agpl-3.0.html>.
+
+package main
+
+import flag "github.com/spf13/pflag"
+
+// globalFs contains the flags that are used in every command.
+var (
+	globalFs = flag.NewFlagSet("global", flag.ContinueOnError)
+
+	dataFlag = globalFs.StringP("data", "d", "", "The data directory where comitium will store its files")
+)
+
+// command holds fields used for printing information about a command.
+type command struct {
+	Name  string
+	Usage string
+}
+
+// info about all the accepted commands
+var commandInfo = []command{
+	{"refresh", "Check for new updates to subscriptions"},
+	{"list", "List all subscriptions"},
+	{"add", "Add a new subscription"},
+	{"remove", "Remove a subscription"},
+	{"help", "Print usage information"},
+	{"version", "Print version information"},
+}
+
+var commands = map[string]*flag.FlagSet{
+	"refresh": flag.NewFlagSet("refresh", flag.ExitOnError),
+	"list":    flag.NewFlagSet("list", flag.ExitOnError),
+	"add":     flag.NewFlagSet("add", flag.ExitOnError),
+	"remove":  flag.NewFlagSet("remove", flag.ExitOnError),
+}
+
+// set up various flags for each individual command
+var (
+	// add
+	addTypeFlag = commands["add"].StringP(
+		"type", "t", // long and shorthand flag
+		"g", // default
+		`Select which type a subscription is. Can be "g" for a
+Gemini feed; "a" for Atom, RSS, & JSON; or "c" to watch
+the page for changes.`,
+	)
+)