dot-check_value_chr: Check character values against one or more regex patterns
In stbl: Stabilize Function Arguments

.check_value_chr

R Documentation

Check character values against one or more regex patterns

Check character values against one or more regex patterns

.check_value_chr(x, regex, x_arg = caller_arg(x), call = caller_env())

`x`	The argument to stabilize.
`regex`	`⁠(character, list, or stringr_pattern)⁠` One or more optional regular expressions to test against the values of `x`. This can be a character vector, a list of character vectors, or a pattern object from the {stringr} package (e.g., `stringr::fixed("a.b")`). The default error message for non-matching values will include the pattern itself (see `regex_must_match()`). To provide a custom message, supply a named character vector where the value is the regex pattern and the name is the message that should be displayed. To check that a pattern is not matched, attach a `negate` attribute set to `TRUE`. If a complex regex pattern throws an error, try installing the stringi package.
`x_arg`	`⁠(length-1 character)⁠` An argument name for x. The automatic value will work in most cases, or pass it through from higher-level functions to make error messages clearer in unexported functions.
`call`	`(environment)` The execution environment to mention as the source of error messages.