From 6130c3012f7bb8aca173a9ab082f3e4b25c0e4a8 Mon Sep 17 00:00:00 2001
From: Gardouille <gardouille@gmail.com>
Date: Thu, 12 Mar 2020 10:13:34 +0100
Subject: [PATCH] Function to test if argument is a remote URL

---
 send.to.0x0.sh | 29 +++++++++++++++++++++++++++--
 1 file changed, 27 insertions(+), 2 deletions(-)

diff --git a/send.to.0x0.sh b/send.to.0x0.sh
index a69b7be..d1f3989 100755
--- a/send.to.0x0.sh
+++ b/send.to.0x0.sh
@@ -13,6 +13,7 @@ debug=true
 flag_clipboard=false
 flag_inline=false
 flag_file=false
+flag_url=false
 
 null_service_url="https://null.101010.fr"
 
@@ -43,6 +44,30 @@ is_file_exist() {
 	fi
 }
 # ]]]
+# Function to check if the argument looks like a remote URL [[[
+is_remote_url() {
+	_url="${1}"
+
+	## The variable will be considered as an URL if it's :
+	##   Start with 1 to 5 alpha caracters followed by "://"
+	##   Start with "www"
+	if printf -- '%s' "${_url}" | grep -q -E -- "^([[:alpha:]]{1,5}://|www)"
+	then
+		### Verify doesn't already comes from the 0x0 service
+		if printf -- '%s' "${_url}" | grep -q -E -- "${null_service_url}"
+		then
+			flag_url=true
+			debug_message "− Func is_remote_url : The url (${_url}) seems to already point to the 0x0 service (${null_service_url})."
+		else
+			flag_url=false
+			debug_message "− Func is_remote_url : The url (${_url}) seems to be a remote url."
+		fi
+	else
+		debug_message "− Func is_remote_url : The content is not an URL."
+	fi
+
+}
+# ]]]
 # Function to get content type [[[
 determine_content_type() {
 	_content="${1}"
@@ -54,8 +79,8 @@ determine_content_type() {
 	if [ "${_content_nb_line}" -eq "1" ]; then
 		### Verify if it's a path to a existent file
 		is_file_exist "${_content}"
-		### Verify it it's a remote URL
-		flag_url=""
+		### Verify if it's a remote URL
+		is_remote_url "${_content}"
 	fi
 }
 # ]]]