A setwd() call in analysis code is a portability problem: it hardcodes an
assumption about the working directory the code runs in (frequently an
absolute path on the author's own machine), mutates global state, and makes a
script depend on being run from a particular place. Best practice is to keep
the working directory as the caller sets it and use relative paths. This scans
the (comment-free) code for setwd(...) calls and returns one row per call,
with the argument as written. R-only (the construct is R's; other languages
have their own, e.g. Stata cd, which this does not scan).
Arguments
- code_text
the code text for a single file (character vector), ideally comment-free (as produced by
code_remove_comments())
Value
a data frame with columns setwd_call (the setwd(...) text as
written) and line (its line number). Empty frame when none are found.
Examples
code_text <- c(
"setwd('D:/Dropbox/project')",
"x <- read.csv('data.csv')"
)
code_setwd(code_text)
#> # A tibble: 1 × 2
#> setwd_call line
#> <chr> <int>
#> 1 setwd('D:/Dropbox/project') 1