Description
eligible is true only for exactly four zeros; return token z then, otherwise an empty string.
Ascii85 groups four source bytes into a fixed encoded group and treats final partial groups differently. Its zero shorthand is a special full-group representation, not a substitute for arbitrary short zero sequences.
eligible is true only for exactly four zeros; return token z then, otherwise an empty string.
When to use this tool
Use Ascii85 Zero Shorthand Eligibility when checking a partial-group count or zero-shorthand eligibility.
How to use the tool and how it works
- Enter bytes, finalGroup. Use the units and conventions below.
- Run the tool. Correct any format, range, or cross-field input error before interpreting the output.
- Read eligible, token. Inspect eligible before interpreting the associated values.
Require one to four byte values in [0,255]; fewer than four require finalGroup true. eligible is true only for exactly four zeros; return token z then, otherwise an empty string.1
| Input field | Meaning and units | Accepted input |
|---|---|---|
| bytes | Bytes | Required. Array of safe integer; maximum items 256. |
| finalGroup | Final Group | Required. Boolean. |
| Output field | Interpretation | Returned shape |
|---|---|---|
| eligible | Eligible | Required. Boolean. |
| token | z when shorthand is eligible, otherwise an empty sentinel that is not an encoded group. | Required. Text; maximum UTF-16 length 8192. |
{
"input": {
"bytes": [
0,
0,
0,
0
],
"finalGroup": false
},
"output": {
"eligible": true,
"token": "z"
}
}Limitations and assumptions
- The empty token means no shorthand was selected, not an encoding of the supplied group. Partial zero groups cannot use z; full Ascii85 encoding remains separate.
- Inputs must satisfy both the field types and the cross-field conditions above. Invalid input causes an error; a successful false flag or documented placeholder is a different result.
Alternative or Complementary methods
Use the full Ascii85 variant required by the consumer for group encoding, delimiters and wrapping.
References
Similar or alternative tools
- Encoding: Ascii85 Partial Group Byte Count
Return symbolCount = byteCount+1 for a final partial Ascii85 group.
- uuencode Value To Symbol Tool
Compute uuencode value to symbol from explicit bounded inputs.