compatibility function call

jc/jc.py

@@ -68,12 +68,26 @@ def helptext(message):
 
     Example:
             ls -al | jc --ls -p
-
     '''
 
     print(textwrap.dedent(helptext_string), file=sys.stderr)
 
 
+def errormessage(message):
+    error_string = f'''
+    jc:  {message}
+    '''
+
+    print(textwrap.dedent(error_string), file=sys.stderr)
+
+
+def compatibility(mod_name, compatible):
+    if sys.platform not in compatible:
+        mod = mod_name.split('.')[-1]
+        errormessage(f'{mod} parser not compatible with your OS ({sys.platform}).\n         Compatible platforms: {compatible}')
+        exit()
+
+
 def main():
     signal.signal(signal.SIGINT, ctrlc)
 

jc/parsers/lsblk.py

@@ -79,6 +79,7 @@ $ lsblk | jc --lsblk -p
 ]
 """
 import string
+import jc
 
 
 def process(proc_data):
@@ -129,6 +130,9 @@ def process(proc_data):
 
 
 def parse(data, raw=False):
+    jc.jc.compatibility(__name__,
+                        ['linux'])
+
     raw_output = []
     linedata = data.splitlines()
     # Clear any blank lines