replaced transfer function with @nl5887 version

plugins/transfer/transfer.plugin.zsh

@@ -2,6 +2,64 @@
 # transfer Plugin
 # Usage Example :
 # > transfer file.txt
+# > transfer directory/
 
-transfer() { if [ $# -eq 0 ]; then echo "No arguments specified. Usage:\necho transfer /tmp/test.md\ncat /tmp/test.md | transfer test.md"; return 1; fi 
-tmpfile=$( mktemp -t transferXXX ); if tty -s; then basefile=$(basename "$1" | sed -e 's/[^a-zA-Z0-9._-]/-/g'); curl --progress-bar --upload-file "$1" "https://transfer.sh/$basefile" >> $tmpfile; else curl --progress-bar --upload-file "-" "https://transfer.sh/$1" >> $tmpfile ; fi; cat $tmpfile; rm -f $tmpfile; }
+
+
+# Author:
+#   Remco Verhoef <remco@dutchcoders.io>
+#   https://gist.github.com/nl5887/a511f172d3fb3cd0e42d
+#
+
+curl --version 2>&1 > /dev/null
+if [ $? -ne 0 ]; then
+  echo "Could not find curl."
+  return 1
+fi
+
+transfer() { 
+    # check arguments
+    if [ $# -eq 0 ]; 
+    then 
+        echo "No arguments specified. Usage:\necho transfer /tmp/test.md\ncat /tmp/test.md | transfer test.md"
+        return 1
+    fi
+
+    # get temporarily filename, output is written to this file show progress can be showed
+    tmpfile=$( mktemp -t transferXXX )
+    
+    # upload stdin or file
+    file=$1
+
+    if tty -s; 
+    then 
+        basefile=$(basename "$file" | sed -e 's/[^a-zA-Z0-9._-]/-/g') 
+
+        if [ ! -e $file ];
+        then
+            echo "File $file doesn't exists."
+            return 1
+        fi
+        
+        if [ -d $file ];
+        then
+            # zip directory and transfer
+            zipfile=$( mktemp -t transferXXX.zip )
+            cd $(dirname $file) && zip -r -q - $(basename $file) >> $zipfile
+            curl --progress-bar --upload-file "$zipfile" "https://transfer.sh/$basefile.zip" >> $tmpfile
+            rm -f $zipfile
+        else
+            # transfer file
+            curl --progress-bar --upload-file "$file" "https://transfer.sh/$basefile" >> $tmpfile
+        fi
+    else 
+        # transfer pipe
+        curl --progress-bar --upload-file "-" "https://transfer.sh/$file" >> $tmpfile
+    fi
+   
+    # cat output link
+    cat $tmpfile
+
+    # cleanup
+    rm -f $tmpfile
+}