Description
Split a regional identifier into region and era tokens.
Regional records connect place labels, language coverage, source vintages, calendar offsets and historical units. A literal label or supplied year offset can organize metadata without resolving changes in borders, calendar systems or naming authority. Unknown and ambiguous values must retain their explicit flags.
Split a regional identifier into region and era tokens.
When to use this tool
Use Regional Identifier Era Token when checking the stated regional record, period, hierarchy or text convention.
How to use the tool and how it works
- Enter identifier, delimiter. Use the units and conventions below.
- Run the tool. Correct any format, range, or cross-field input error before interpreting the output.
- Read regionToken, eraToken. Use the output convention below.
Split a regional identifier into region and era tokens. Require nonempty delimiter and exactly two nonempty split parts; return both literally.1
| Input field | Meaning and units | Accepted input |
|---|---|---|
| identifier | Identifier | Required. Text; maximum UTF-16 length 8192. |
| delimiter | Delimiter | Required. Text; maximum UTF-16 length 8192. |
| Output field | Interpretation | Returned shape |
|---|---|---|
| regionToken | Region Token | Required. Text; maximum UTF-16 length 8192. |
| eraToken | Era Token | Required. Text; maximum UTF-16 length 8192. |
{
"input": {
"identifier": "R1:EraA",
"delimiter": ":"
},
"output": {
"regionToken": "R1",
"eraToken": "EraA"
}
}Limitations and assumptions
- No geographic identity, historical era, authority list or date conversion is resolved.
- 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
Consult the original sources, applicable calendar and historical naming/measurement authorities for geographic or historical interpretation.
References
Similar or alternative tools
- Historical Measure Unit Ambiguity
Return supplied historical-unit ambiguity status.
- Regional Dualera Year Token Tool
Year-offset bookkeeping only for a caller-asserted compatible era mapping.