size converter done

aif/disk/__init__.py

@@ -0,0 +1,5 @@
+from . import block
+from . import filesystem
+from . import luks
+from . import lvm
+from . import mdadm

aif/system/__init__.py

@@ -0,0 +1,2 @@
+from . import locales
+from . import users

aif/utils.py

@@ -1,3 +1,5 @@
+import re
+
 def xmlBool(xmlobj):
     # https://bugs.launchpad.net/lxml/+bug/1850221
     if isinstance(xmlobj, bool):
@@ -9,66 +11,164 @@ def xmlBool(xmlobj):
     else:
         return(None)
 
-class _Sizer(object):
+
-    def __init__(self):
+def collapseKeys(d, keylist = None):
-        def _getKeys(d, keylist = None):
     if not keylist:
         keylist = []
     for k, v in d.items():
         if isinstance(v, dict):
             keylist.append(k)
-                    keylist = _getKeys(v, keylist = keylist)
+            keylist = collapseKeys(v, keylist = keylist)
         else:
             keylist.append(k)
     return(keylist)
+
+
+def collapseValues(d, vallist = None):
+    if not vallist:
+        vallist = []
+    for k, v in d.items():
+        if isinstance(v, dict):
+            vallist = collapseValues(v, vallist = vallist)
+        else:
+            vallist.append(v)
+    return(vallist)
+
+
+class _Sizer(object):
+    def __init__(self):
         # We use different methods for converting between storage and BW, and different multipliers for each subtype.
         # https://stackoverflow.com/questions/5194057/better-way-to-convert-file-sizes-in-python
         # https://en.wikipedia.org/wiki/Orders_of_magnitude_(data)
         # https://en.wikipedia.org/wiki/Binary_prefix
-        self.storageUnits = {'decimal': {'B': 0,
+        # 'decimal' is base-10, 'binary' is base-2. (Duh.)
-                                         'kB': 7,  # Kilobyte
+        # "b" = bytes, "n" = given value, and "u" = unit suffix's key in below notes.
-                                         'MB': 17,  # Megabyte...
+        self.storageUnits = {'decimal': {  # n * (10 ** u) = b; b / (10 ** u) = u
-                                         'GB': 27,
+                                     0: (None, 'B', 'byte'),
-                                         'TB': 37},
+                                     3: ('k', 'kB', 'kilobyte'),
-                             'binary': {'KiB': 10,  # Kibibyte
+                                     6: ('M', 'MB', 'megabyte'),
-                                        'MiB': 20,  # Mebibyte...
+                                     9: ('G', 'GB', 'gigabyte'),
-                                        'GiB': 30,
+                                     12: ('T', 'TB', 'teraybte'),
-                                        'TiB': 40}}
+                                     13: ('P', 'PB', 'petabyte'),  # yeah, right.
-        # https://en.wikipedia.org/wiki/Bit#Multiple_bits
+                                     15: ('E', 'EB', 'exabyte'),
-        self.bwUnits = {'b': None,
+                                     18: ('Z', 'ZB', 'zettabyte'),
-                        'bit': None,
+                                     19: ('Y', 'YB', 'yottabyte')
-                        'k': }
+                                     },
-        self.valid_storage = list(self.storageUnits.keys())
+                             'binary': {  # n * (2 ** u) = b; b / (2 ** u) = u
-        self.valid_storage.insert('nibble')
+                                     -1: ('nybble', 'nibble', 'nyble', 'half-byte', 'tetrade', 'nibble'),
-        self.valid_bw = _getKeys(self.bwUnits)
+                                     10: ('Ki', 'KiB', 'kibibyte'),
+                                     20: ('Mi', 'MiB', 'mebibyte'),
+                                     30: ('Gi', 'GiB', 'gibibyte'),
+                                     40: ('Ti', 'TiB', 'tebibyte'),
+                                     50: ('Pi', 'PiB', 'pebibyte'),
+                                     60: ('Ei', 'EiB', 'exbibyte'),
+                                     70: ('Zi', 'ZiB', 'zebibyte'),
+                                     80: ('Yi', 'YiB', 'yobibyte')
+                                     }}
+        # https://en.wikipedia.org/wiki/Bit#Multiple_bits - note that 8 bits = 1 byte
+        self.bwUnits = {'decimal': {  # n * (10 ** u) = b; b / (10 ** u) = u
+                                0: (None, 'b', 'bit'),
+                                3: ('k', 'kb', 'kilobit'),
+                                6: ('M', 'Mb', 'megabit'),
+                                9: ('G', 'Gb', 'gigabit'),
+                                12: ('T', 'Tb', 'terabit'),
+                                13: ('P', 'Pb', 'petabit'),
+                                15: ('E', 'Eb', 'exabit'),
+                                18: ('Z', 'Zb', 'zettabit'),
+                                19: ('Y', 'Yb', 'yottabit')
+                                },
+                        'binary': {  # n * (2 ** u) = b; b / (2 ** u) = u
+                                -1: ('semi-octet', 'quartet', 'quadbit'),
+                                10: ('Ki', 'Kib', 'kibibit'),
+                                20: ('Mi', 'Mib', 'mebibit'),
+                                30: ('Gi', 'Gib', 'gibibit'),
+                                40: ('Ti', 'Tib', 'tebibit'),
+                                50: ('Pi', 'Pib', 'pebibit'),
+                                60: ('Ei', 'Eib', 'exbibit'),
+                                70: ('Zi', 'Zib', 'zebibit'),
+                                80: ('Yi', 'Yib', 'yobibit')
+                                }}
+        self.valid_storage = []
+        for unit_type, convpair in self.storageUnits.items():
+            for f, l in convpair.items():
+                for suffix in l:
+                    if suffix not in self.valid_storage:
+                        self.valid_storage.append(suffix)
+        self.valid_bw = []
+        for unit_type, convpair in self.bwUnits.items():
+            for f, l in convpair.items():
+                for suffix in l:
+                    if suffix not in self.valid_bw:
+                        self.valid_bw.append(suffix)
 
-    def convert(self, n, suffix, target = None):
+    def convert(self, n, suffix):
-        pass
+        conversion = {}
+        if suffix in self.valid_storage:
+            conversion.update(self.convertStorage(n, suffix))
+            b = conversion['B'] * 8
+            conversion.update(self.convertBW(b, 'b'))
+        elif suffix in self.valid_bw:
+            conversion.update(self.convertBW(n, suffix))
+            b = conversion['b'] / 8
+            conversion.update(self.convertStorage(b, 'B'))
+        return(conversion)
 
     def convertBW(self, n, suffix, target = None):
-        inBits = n
-        if suffix not in self.valid_bw:
-            raise ValueError('suffix must be one of {0}'.format(', '.format(self.valid_bw)))
-        if suffix != 'b':
-            if self.bwUnits[suffix]:
-                inBits = n * (10 ** self.bwUnits[suffix])
-            else:
         inBits = None
+        conversion = None
+        base_factors = []
+        if suffix not in self.valid_bw:
+            raise ValueError('suffix is not a valid unit notation for this conversion')
+        if target and target not in self.valid_bw:
+            raise ValueError('target is not a valid unit notation for this conversion')
+        for (_unit_type, _base) in (('decimal', 10), ('binary', 2)):
+            if target and base_factors:
+                break
+            for u, suffixes in self.bwUnits[_unit_type].items():
+                if all((target, inBits, base_factors)):
+                    break
+                if suffix in suffixes:
+                    inBits = n * float(_base ** u)
+                if target and target in suffixes:
+                    base_factors.append((_base, u, suffixes[1]))
+                elif not target:
+                    base_factors.append((_base, u, suffixes[1]))
+        if target:
+            conversion = float(inBits) / float(base_factors[0][0] ** base_factors[0][1])
+        else:
+            if not isinstance(conversion, dict):
+                conversion = {}
+            for base, factor, suffix in base_factors:
+                conversion[suffix] = float(inBits) / float(base ** factor)
+        return(conversion)
 
     def convertStorage(self, n, suffix, target = None):
-        inBytes = n
+        inBytes = None
+        conversion = None
+        base_factors = []
         if suffix not in self.valid_storage:
-            raise ValueError('suffix must be one of {0}'.format(', '.format(self.valid_storage)))
+            raise ValueError('suffix is not a valid unit notation for this conversion')
-        if suffix == 'nibble':
+        if target and target not in self.valid_storage:
-            inBytes = n * 0.5
+            raise ValueError('target is not a valid unit notation for this conversion')
-        elif suffix != 'B':
+        for (_unit_type, _base) in (('decimal', 10), ('binary', 2)):
-            inBytes = float(n << self.storageUnits[suffix])
+            if target and base_factors:
+                break
+            for u, suffixes in self.storageUnits[_unit_type].items():
+                if all((target, inBytes, base_factors)):
+                    break
+                if suffix in suffixes:
+                    inBytes = n * float(_base ** u)
+                if target and target in suffixes:
+                    base_factors.append((_base, u, suffixes[1]))
+                elif not target:
+                    base_factors.append((_base, u, suffixes[1]))
         if target:
-            conversion = float(inBytes / float(1 << self.storageUnits[target]))
+            conversion = float(inBytes) / float(base_factors[0][0] ** base_factors[0][1])
         else:
+            if not isinstance(conversion, dict):
                 conversion = {}
-            for unit, shifter in self.storageUnits.items():
+            for base, factor, suffix in base_factors:
-                conversion[unit] = float(inBytes / float(1 << self.storageUnits[unit]))
+                conversion[suffix] = float(inBytes) / float(base ** factor)
         return(conversion)