Determine level in hierarchy

Divides the number of spaces before alphanumeric characters with 4 and uses the result to determine hierarchy. Top level is 0.

Usage

toc_determine_hierarchy(input_string)

Arguments

input_string

A string containing Eurostat TOC titles

Value

Numeric

Details

Used in toc_determine_hierarchy function to determine hierarchy. Hierarchy is defined in Eurostat .txt format TOC files by the number of white space characters at intervals of four. For example, " Foo" (4 white space characters) is one level higher than " Bar" (8 white space characters). "Database by themes" (0 white space characters before the first alphanumeric character) is highest in the hierarchy.

The function will return a warning if the input has white space in anything else than as increments of 4. 0, 4, 8... are acceptable but 3, 6, 10... are not.

See also

get_eurostat_toc() toc_count_children() toc_determine_hierarchy() toc_list_children() toc_count_whitespace()

Author

Pyry Kantanen

Examples

strings <- c("        abc", "    cdf", "no_spaces")
eurostat:::toc_determine_hierarchy(strings)
#> [1] 2 1 0