Added support scripts.

- iris-colorize is a go executable which resolves {r iris colors} to
  ANSI escape sequences
- with-iris-news is a shell script which starts up an iris-news server,
  executes "$@" with environment vars providing its location, and shuts
  down the server once the foreground application closes
- iris-tin run /usr/bin/tin under with-iris-news
- iris-slrn runs /usr/bin/slrn under with-iris-news

iris-colorize/.gitignore

@@ -0,0 +1 @@
+iris-colorize

iris-colorize/main.go

@@ -0,0 +1,59 @@
+package main
+
+import (
+	"fmt"
+	"io"
+	"log"
+	"os"
+	"regexp"
+	"sort"
+	"strings"
+)
+
+var (
+	delimRE  = regexp.MustCompile(`\\\{|\{[niuvrgybmcw]+\s|\\\}|\}`)
+	colorMap = map[byte]byte{
+		'n': 0,
+		'i': 1,
+		'u': 4,
+		'v': 7,
+		'r': 31,
+		'g': 32,
+		'y': 33,
+		'b': 34,
+		'm': 35,
+		'c': 36,
+		'w': 37,
+	}
+)
+
+func main() {
+	src, err := io.ReadAll(os.Stdin)
+	if err != nil {
+		log.Fatal(err)
+	}
+
+	_, _ = os.Stdout.Write(delimRE.ReplaceAllFunc(src, func(b []byte) []byte {
+		switch b[0] {
+		case '\\':
+			return []byte{b[1]}
+		case '}':
+			return []byte("\033[0m")
+		case '{':
+			mods := make([]byte, len(b)-2)
+			for i, c := range b[1 : len(b)-1] {
+				mods[i] = colorMap[c]
+			}
+			sort.Slice(mods, func(i, j int) bool { return mods[i] < mods[j] })
+
+			codes := make([]string, len(mods))
+			for i, c := range mods {
+				codes[i] = fmt.Sprintf("%d", c)
+			}
+
+			return []byte("\033[" + strings.Join(codes, ";") + "m")
+		}
+
+		panic("unreachable")
+	}))
+}

script/iris-slrn

@@ -0,0 +1,4 @@
+#!/usr/bin/env sh
+
+$(dirname $0)/with-iris-news \
+	sh -c "$(echo 'exec /usr/bin/slrn -h "$NNTPSERVER"' "$@")"

script/iris-tin

@@ -0,0 +1,4 @@
+#!/usr/bin/env sh
+
+$(dirname $0)/with-iris-news \
+	sh -c "$(echo 'exec /usr/bin/tin -r -g "$NNTPHOST" -p "$NNTPPORT"' "${@:-ctrl-c.iris}")"

script/with-iris-news

@@ -0,0 +1,20 @@
+#!/usr/bin/env bash
+
+$(dirname $0)/iris-news >/dev/null 2>&1 &
+serverpid="$!"
+
+sleep 1
+addr="$(cat ~/.iris-news-server)"
+
+function cleanup {
+	kill $serverpid
+	rm ~/.iris-news-server
+	tail --pid $serverpid -f /dev/null
+}
+trap cleanup EXIT
+
+env \
+	NNTPSERVER="$addr" \
+	NNTPHOST="${addr%%:*}" \
+	NNTPPORT="${addr##*:}" \
+	"$@"