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decode

pmcp_server_toolkit::workbook::render_uri

Function decode 

Source 
pub fn decode(uri: &str) -> Result<DecodedRender, WorkbookToolError>
Expand description

Decode a workbook:// render pointer URI back into its DecodedRender payload — TOTAL and panic-free over arbitrary/adversarial input.

The size guard is checked FIRST (T-92-14 / V12): a URI longer than MAX_ENCODED_URI_LEN is rejected BEFORE any base64 decode, so an oversized attacker payload never reaches the allocating decode path.

§Errors

Returns WorkbookToolError::invalid_input for ANY malformed input — an oversized URI, a wrong/absent scheme prefix, non-base64 body, non-UTF-8 or non-JSON decoded bytes, or a payload missing the dto/provenance fields. NEVER panics (T-92-17, deny(panic) + proptest-proven).