From 96ef89d1d20de9a9f6447ede43c084c79e27af27 Mon Sep 17 00:00:00 2001
From: Vincent Le Goff <vincent.legoff@konghq.com>
Date: Thu, 2 Dec 2021 16:41:13 +0100
Subject: [PATCH] feat: minor improvements

---
 index.js                   |  5 +----
 lib/utils.js               | 23 ++---------------------
 test/compatibility.test.js |  8 ++++++--
 test/parse.test.js         |  9 +++++++++
 4 files changed, 18 insertions(+), 27 deletions(-)

diff --git a/index.js b/index.js
index 0978392..e36a19c 100644
--- a/index.js
+++ b/index.js
@@ -226,7 +226,7 @@ function parse (uri, opts) {
     if (parsed.host) {
       const ipv4result = normalizeIPv4(parsed.host)
       if (ipv4result.isIPV4 === false) {
-        parsed.host = normalizeIPv6(ipv4result.host, { isIPV4: false }).host
+        parsed.host = normalizeIPv6(ipv4result.host, { isIPV4: false }).host.toLowerCase()
       } else {
         parsed.host = ipv4result.host
       }
@@ -288,9 +288,6 @@ function parse (uri, opts) {
     if (schemeHandler && schemeHandler.parse) {
       schemeHandler.parse(parsed, options)
     }
-    if (parsed.host && parsed.host.length && parsed.host[0] === '[' && parsed.host[parsed.host.length - 1] === ']') {
-      parsed.host = parsed.host.substr(1).slice(0, -1)
-    }
   } else {
     parsed.error = parsed.error || 'URI can not be parsed.'
   }
diff --git a/lib/utils.js b/lib/utils.js
index 73a95a6..71017e4 100644
--- a/lib/utils.js
+++ b/lib/utils.js
@@ -107,46 +107,27 @@ function normalizeIPv6 (host, opts = {}) {
   }
 }
 
-function stripLeadingZeros (str, token, outputArray = false) {
-  const outArray = []
+function stripLeadingZeros (str, token) {
   let out = ''
-  let temp = ''
   let skip = true
   const l = str.length
   for (let i = 0; i < l; i++) {
     const c = str[i]
     if (c === '0' && skip) {
       if ((i + 1 <= l && str[i + 1] === token) || i + 1 === l) {
-        if (outputArray) {
-          temp += c
-        } else {
           out += c
-        }
         skip = false
       }
     } else {
       if (c === token) {
         skip = true
-        if (temp.length) {
-          outArray.push(temp)
-          temp = ''
-        }
       } else {
         skip = false
       }
-      if (outputArray) {
-        if (c !== token) {
-          temp += c
-        }
-      } else {
         out += c
-      }
     }
   }
-  if (temp.length) {
-    outArray.push(temp)
-  }
-  return outputArray ? outArray : out
+  return out
 }
 
 function findToken (str, token) {
diff --git a/test/compatibility.test.js b/test/compatibility.test.js
index 7aab2e8..84b11e7 100644
--- a/test/compatibility.test.js
+++ b/test/compatibility.test.js
@@ -12,6 +12,7 @@ test('compatibility Parse', (t) => {
     '//10.10.10.10',
     '//10.10.000.10',
     '//[2001:db8::7%en0]',
+    '//[2001:dbZ::1]:80',
     '//[2001:db8::1]:80',
     '//[2001:db8::001]:80',
     'uri://user:pass@example.com:123/one/two.three?q1=a1&q2=a2#body',
@@ -27,8 +28,11 @@ test('compatibility Parse', (t) => {
     'wss://example.com/?bar=baz',
     'urn:uuid:f81d4fae-7dec-11d0-a765-00a0c91e6bf6',
     'urn:uuid:notauuid-7dec-11d0-a765-00a0c91e6bf6',
-    'urn:example:%D0%B0123,z456'
-    //  'mailto:chris@example.com',
+    'urn:example:%D0%B0123,z456',
+    '//[2606:2800:220:1:248:1893:25c8:1946:43209]',
+    'http://foo.bar',
+    'http://'
+    //  'mailto:chris@example.com'-203845,
     //  'mailto:infobot@example.com?subject=current-issue',
     //  'mailto:infobot@example.com?body=send%20current-issue',
     //  'mailto:infobot@example.com?body=send%20current-issue%0D%0Asend%20index',
diff --git a/test/parse.test.js b/test/parse.test.js
index 0f20904..d8e8e38 100644
--- a/test/parse.test.js
+++ b/test/parse.test.js
@@ -196,6 +196,10 @@ test('URI parse', (t) => {
   t.equal(components.query, undefined, 'query')
   t.equal(components.fragment, undefined, 'fragment')
 
+  // invalid IPv6
+  components = URI.parse('//[2001:dbZ::7]')
+  t.equal(components.host,'[2001:dbz::7]')
+
   // mixed IPv4address & IPv6address
   components = URI.parse('//[::ffff:129.144.52.38]')
   t.equal(components.error, undefined, 'IPv4address errors')
@@ -297,5 +301,10 @@ test('URI parse', (t) => {
   t.equal(components.nid, 'foo', 'nid')
   t.equal(components.nss, 'a123,456', 'nss')
 
+  components = URI.parse('//[2606:2800:220:1:248:1893:25c8:1946:43209]')
+  t.equal(components.host,"[2606:2800:220:1:248:1893:25c8:1946:43209]")
+
+  components = URI.parse('urn:foo:|\\24fpl')
+  t.equal(components.error,'URN can not be parsed.')
   t.end()
 })