remove usethis and fs functions

DESCRIPTION

@@ -37,7 +37,6 @@ Imports:
 Suggests:
     bookdown,
     crayon,
-    fs,
     httr (>= 1.2.1),
     jsonlite,
     mockery,
@@ -48,7 +47,6 @@ Suggests:
     testthat (>= 3.0.0),
     tibble,
     tufte,
-    usethis,
     withr (>= 2.5.0)
 VignetteBuilder: 
     knitr

R/use_lintr.R

@@ -45,12 +45,31 @@ use_lintr <- function(path = ".", type = c("tidyverse", "full")) {
   write.dcf(the_config, config_file, width = Inf)
 
   # If this is an R package and if available, add .lintr file to .Rbuildignore
-  if (file.exists("DESCRIPTION")) {
+  if (file.exists("DESCRIPTION") && file.exists(".Rbuildignore")) {
     try(
-      usethis::use_build_ignore(fs::path_rel(config_file)),
+      add_build_ignore(config_file),
       silent = TRUE
     )
   }
 
   invisible(config_file)
 }
+
+add_build_ignore <- function(path) {
+  path_build_ignore <- ".Rbuildignore"
+  existing_lines <- readLines(path_build_ignore, encoding = "UTF-8", warn = FALSE)
+
+  escape_path <- gsub("^\\./", "", path)
+  escape_path <- gsub("\\.", "\\\\.", escape_path)
+  escape_path <- gsub("/$", "", escape_path)
+  escape_path <- paste0("^", escape_path, "$")
+
+  new_lines <- c(existing_lines, setdiff(escape_path, existing_lines))
+
+  con <- file(path_build_ignore, open = "wb", encoding = "utf-8")
+  writeLines(enc2utf8(new_lines), con, useBytes = TRUE)
+
+  message("Add '", escape_path, "' to ", path_build_ignore)
+
+  invisible(NULL)
+}