Helper to find layer configuration keys — get

This helper function searches for keys defined in inst/config/seq_layers.yaml. Keys are matched using a regular-expression pattern.

Usage

get_keys(pattern = NULL, reduce = TRUE, filepath = NULL)

Arguments

pattern: character or NULL; regular-expression pattern used to filter keys. If NULL, all keys defined in the configuration are returned.
reduce: logical; if TRUE (default), reduce each matching key.
filepath: character or NULL; optional override for the path to the YAML configuration file. Mainly used for testing purposes.

Value

A character vector of matching keys. If reduce = TRUE, the returned keys are the reduced forms. If pattern = NULL, all configuration keys are returned.

Details

Reduction process Configuration keys typically follow a three/four-part structure such as "v.seq.parca.poly" or "r.ortho.irc". When reduce = TRUE, each key is split on "." and only the third element is returned (s). This provides a short, semantic identifier for internal use.

"v.seq.parca.poly" -> "parca"
"r.ortho.irc"      -> "irc"

If multiple full keys reduce to the same name, the function aborts to prevent ambiguity.

Examples

if (FALSE) { # \dontrun{
# List all available layer keys
get_keys()

# List full keys matching "parca"
get_keys("parca", reduce = FALSE)

# Return reduced keys (3rd element of each dotted key)
get_keys("parca", reduce = TRUE)
} # }