use go generate for TLD generation

.gx/lastpubver

@@ -0,0 +1 @@
+1.0.0: QmaeHSCBd9XjXxmgHEiKkHtLcMCb2eZsPLKT7bHgBfBkqw

is_domain.go

@@ -2,6 +2,8 @@ package isdomain
 
 import "strings"
 
+//go:generate bash regenerate-tlds.sh
+
 // IsICANNTLD returns whether the given string is a TLD (Top Level Domain),
 // according to ICANN. Well, really according to the TLDs listed in this
 // package.

package.json

@@ -0,0 +1,14 @@
+{
+  "author": "jbenet",
+  "bugs": {
+    "URL": "https://github.com/jbenet/go-is-domain/issues"
+  },
+  "gx": {
+    "dvcsimport": "github.com/jbenet/go-is-domain"
+  },
+  "gxVersion": "0.7.0",
+  "language": "go",
+  "license": "MIT",
+  "name": "go-is-domain",
+  "version": "1.0.0"
+}

regenerate-tlds.sh

@@ -0,0 +1,26 @@
+#!/usr/bin/env bash
+
+out=${1-tlds_iana.go}
+
+list=$(mktemp)
+
+wget https://data.iana.org/TLD/tlds-alpha-by-domain.txt -O $list
+
+header=$(head -1 $list)
+
+cat > $out <<EOF
+package isdomain
+
+// $header
+var TLDs = map[string]bool{
+EOF
+
+grep -v '^#' $list | while read tld; do
+    echo -e "\t\"$tld\": true,"
+done >> $out
+
+echo '}' >> $out
+
+gofmt -w $out
+
+