Read a text file, process the text with a function, and write the text back
Read a text file with the UTF-8 encoding, apply a function to the text, and write back to the original file.
process_file(file, fun = identity, x = read_utf8(file)) sort_file(..., fun = sort)
file |
Path to a text file. |
fun |
A function to process the text. |
x |
The content of the file. |
... |
Arguments to be passed to |
sort_file() is an application of process_file(), with the
processing function being sort(), i.e., it sorts the text lines
in a file and write back the sorted text.
If file is provided, invisible NULL (the file is
updated as a side effect), otherwise the processed content (as a character
vector).
f = tempfile()
xfun::write_utf8("Hello World", f)
xfun::process_file(f, function(x) gsub("World", "woRld", x))
xfun::read_utf8(f) # see if it has been updated
file.remove(f)Please choose more modern alternatives, such as Google Chrome or Mozilla Firefox.