Units of measurement of bytes? #44
Description
| Unit | Implemented? | Description | Examples | Suggested implementation |
|---|---|---|---|---|
| Decimal | [x] | A decimal integer, which is equivalent to specifying a single byte unit for the count. | 23, 1024 |
u64::from_str(...) |
| Hex | [x] Implemented in #45. | A hexadecimal integer. Specified with a leading 0x. |
0x17, 0x100 |
u64::from_str_radix(...) |
| Blocks | [ ] | A single block, which is by default 512 bytes but configurable via config flag. | -b 512 -n 1blockN.B: one cannot use a block unit to define the block size. |
Add a flag to optionally define block size, then check for a trailing block when parsing numbers. Multiply by block size. |
| Bytes | [ ] | A byte size familiar to most IT professionals. Specified by B at the end of the count, and can include an optional magnitudinal spec like kilobytes (K) or megabytes (M). |
|
Implement a regex of the form (?P<count>\d+)(?P<magnitude_unit>[KM]?)B. |
Other open questions
- Should the block unit, which might be controversial, be scoped into another issue?
- Should a single leading
-or+sign be supported?- Not sure how
+is useful --xxd's manual states that for the-soption+is useful only forstdin. Not sure what that means, though.
- Not sure how