CODEWITHSUNDEEP
rdevtools
Rich Scriven
Rich Scriven

Reputation: 99331

Searching for a code snippet a list of .R files

Suppose I've discovered that in my package, a small piece of code needs to be changed and I cannot recall all the file names where that code may exist.

Is there a package development tool that can identify all the files that contain the problem code given the list of files in the R folder?

Right now, for 14 files in the R directory I'm using

> c(sapply(list.files("R", full.names = TRUE), function(x){
     grep("data/", readLines(x, warn = FALSE), value = TRUE)
  }), recursive = TRUE)
#                                                      R/load-event.R 
# "    on.exit(file.remove(paste0(\"data/\", list.files(\"data\"))))"

But this could be time-consuming if the file list is long, and the files themselves are big.

Upvotes: 0

Views: 328

Answers (1)

merlin2011
merlin2011

Reputation: 75575

It sounds like you are looking for grep. The following command will list all files which contain the string data/.

grep -l 'data/' R/*

Upvotes: 2

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