1 files changed, 37 insertions, 0 deletions
diff --git a/glances/compat.py b/glances/compat.py
index 60dcb3bc..4626b8c0 100644
--- a/glances/compat.py
+++ b/glances/compat.py
@@ -20,6 +20,7 @@ import types
 import subprocess
 import os
 from datetime import datetime
+import re
 
 from glances.logger import logger
 
@@ -366,3 +367,39 @@ def urlopen_auth(url, username, password):
             headers={'Authorization': 'Basic ' + base64.b64encode(('%s:%s' % (username, password)).encode()).decode()},
         )
     )
+
+
+def string_value_to_float(s):
+    """Convert a string with a value and an unit to a float.
+    Example:
+    '12.5 MB' -> 12500000.0
+    '32.5 GB' -> 32500000000.0
+    Args:
+        s (string): Input string with value and unit
+    Output:
+        float: The value in float
+    """
+    convert_dict = {
+        None: 1,
+        'B': 1,
+        'KB': 1000,
+        'MB': 1000000,
+        'GB': 1000000000,
+        'TB': 1000000000000,
+        'PB': 1000000000000000,
+    }
+    unpack_string = [
+        i[0] if i[1] == '' else i[1].upper() for i in re.findall(r'([\d.]+)|([^\d.]+)', s.replace(' ', ''))
+    ]
+    if len(unpack_string) == 2:
+        value, unit = unpack_string
+    elif len(unpack_string) == 1:
+        value = unpack_string[0]
+        unit = None
+    else:
+        return None
+    try:
+        value = float(unpack_string[0])
+    except ValueError:
+        return None
+    return value * convert_dict[unit]