Function specsyn::parseRegistry

• Defined in File SpecsynUtils.hpp

Function Documentation

auto specsyn::parseRegistry(const std::string &registryName = defaultRegistry) -> std::pair<toml::table, std::filesystem::path>

Read a spectral library registry file.

This routine checks that registryName exists, is a valid toml file, and that every entry it lists has at least a “file” field. Unlike a track registry (see TrackUtils.cpp’s own parseRegistry(), which does require every entry to also have a “Fe_H” field), a spectra registry’s entries are not all guaranteed to share the same [Fe/H]-parameterized shape – e.g. a white dwarf atmosphere grid (read by SpecsynLibWD) has no [Fe/H] axis at all – so “Fe_H” is not required upfront here; any code that actually needs a specific entry’s Fe_H values (e.g. findMatchingSpectra) fails clearly on its own if that entry doesn’t have any, at the point it is actually used, rather than this function rejecting the entire registry file just because one entry in it happens not to need that field. Throws a runtime error if any of the above conditions are not met.

Parameters:

registryName – Name of the registry file

Returns:

A pair consisting of a toml table containing the contents of the registry a the path from which the table was read.