move utils to own module and add quiet mode

jc/utils.py

@@ -0,0 +1,65 @@
+"""jc - JSON CLI output utility utils"""
+import textwrap
+import sys
+
+
+def ctrlc(signum, frame):
+    exit()
+
+
+def helptext(message):
+    helptext_string = f'''
+    jc:     {message}
+
+    Usage:  jc PARSER [OPTIONS]
+
+    Parsers:
+            --arp        arp parser
+            --df         df parser
+            --dig        dig parser
+            --env        env parser
+            --free       free parser
+            --history    history parser
+            --ifconfig   iconfig parser
+            --iptables   iptables parser
+            --jobs       jobs parser
+            --ls         ls parser
+            --lsblk      lsblk parser
+            --lsmod      lsmod parser
+            --lsof       lsof parser
+            --mount      mount parser
+            --netstat    netstat parser
+            --ps         ps parser
+            --route      route parser
+            --uname      uname parser
+            --uptime     uptime parser
+            --w          w parser
+
+    Options:
+            -p           pretty print output
+            -q           quiet - suppress warnings
+            -r           raw JSON output
+
+    Example:
+            ls -al | jc --ls -p
+    '''
+
+    print(textwrap.dedent(helptext_string), file=sys.stderr)
+
+
+def error_message(message):
+    error_string = f'''
+    jc:  {message}
+    '''
+
+    print(textwrap.dedent(error_string), file=sys.stderr)
+
+
+def compatibility(mod_name, compatible):
+    '''
+    compatible options: linux, darwin, cygwin, win32, aix, freebsd
+    '''
+    if sys.platform not in compatible:
+        mod = mod_name.split('.')[-1]
+        compat_list = ', '.join(compatible)
+        error_message(f'Warning - {mod} parser not compatible with your OS ({sys.platform}).\n         Compatible platforms: {compat_list}')