[PATCH fb v1 2/3] fb: helper: Introduce `build_url()` function

[Ammar Faizi <ammarfaizi2@gnuweeb.org>]

Introduce build_url() function to construct a URL based on the return
value of parse_url(). Currently, the only purpose of this function is to
easily change the hostname without inventing our own URL parser.

This function is taken from an answer on the stackoverflow site.

Link: https://stackoverflow.com/a/35207936/7275114
Signed-off-by: Ammar Faizi <ammarfaizi2@gnuweeb.org>
---
 src/Facebook/helpers.php | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

diff --git a/src/Facebook/helpers.php b/src/Facebook/helpers.php
index 224ec45d70755407..ae50775908ceb71f 100644
--- a/src/Facebook/helpers.php
+++ b/src/Facebook/helpers.php
@@ -66,3 +66,21 @@ function full_html_clean(string $m): string
 
 	return trim(implode("\n", $m));
 }
+
+/**
+ * @param array $parts
+ * @return string
+ */
+function build_url(array $parts): string
+{
+	return (isset($parts['scheme']) ? "{$parts['scheme']}:" : '') .
+		((isset($parts['user']) || isset($parts['host'])) ? '//' : '') .
+		(isset($parts['user']) ? "{$parts['user']}" : '') .
+		(isset($parts['pass']) ? ":{$parts['pass']}" : '') .
+		(isset($parts['user']) ? '@' : '') .
+		(isset($parts['host']) ? "{$parts['host']}" : '') .
+		(isset($parts['port']) ? ":{$parts['port']}" : '') . 
+		(isset($parts['path']) ? "{$parts['path']}" : '') .
+		(isset($parts['query']) ? "?{$parts['query']}" : '') .
+		(isset($parts['fragment']) ? "#{$parts['fragment']}" : '');
+}
-- 
Ammar Faizi