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Checks extension using
vld_string(x) && vld_subset(tools::file_ext(x), ext)
The user may want to use toupper() or tolower() to ensure the case matches.
toupper()
tolower()
chk_ext(x, ext, x_name = NULL)vld_ext(x, ext)
vld_ext(x, ext)
The chk_ function throws an informative error if the test fails or returns the original object if successful so it can used in pipes.
chk_
The vld_ function returns a flag indicating whether the test was met.
vld_
The object to check.
A character vector of the permitted file extensions (without the .).
A string of the name of object x or NULL.
vld_ext(): Validate File Extension
vld_ext()
Other chk_files: chk_dir(), chk_file()
chk_dir()
chk_file()
# chk_ext try(chk_ext("file1.pdf", "png")) # vld_ext vld_ext("oeu.pdf", "pdf") vld_ext(toupper("oeu.pdf"), "PDF")
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