greplDir: Search for a Pattern in Files within a Directory

In FastUtils: Fast, Readable Utility Functions

Search for a Pattern in Files within a Directory

Description

The greplDir function searches for a specified pattern in all files within a given directory. It allows for optional exclusion of files matching a specified regular expression. Note that all files are assumed to be a single string, with each line joined by the newline character "\n".

Usage

greplDir(fpattern, dirPath = getwd(), fIgnoreRegex = NULL, ...)

Arguments

fpattern	Character. The pattern to search for within the files.
dirPath	Character. The path to the directory containing files to be searched.
fIgnoreRegex	Character. A regular expression to match file names that should be ignored (default is NULL).
...	Additional arguments passed to listFiles(), which are passed to list.files()

Value

A named logical vector indicating which files contain the pattern. The names attribute contains the file names.

Examples

result <- tryCatch(
  greplDir("error", fIgnoreRegex = "\\.log$"),
  warning = function(w) c(exFname = TRUE),
  error = function(e) c(exFname = TRUE)
)
# its even more useful to use `base::which` on the result to
# get matches and mismatches - this returns it with names
# by default
which(result)
which(!result)

FastUtils documentation built on Sept. 11, 2024, 5:13 p.m.