Finds the languages used in the label::<language> style columns of the
survey and choices sheets, for example label::English (en), label::en
or label::English.
Value
A data.frame with one row per language and columns suffix (the
text after ::), code, name and default (TRUE for the language used
when no lang is requested: the default_language of the settings sheet
if it matches, otherwise the first language). The data.frame has no rows
for a single-language form.
Examples
path <- system.file("extdata", "multilang", "multilang.xlsx",
package = "convertxlsform")
xlsform_languages(path)
#> suffix code name default
#> 1 English (en) en English TRUE
#> 2 Bengali (bn) bn Bengali FALSE
