resmush_dir {resmush}

Optimize files of several directories

Description

Optimize all the local files of a directory (or list of directories) using the reSmush.it API.

Usage

resmush_dir(
  dir,
  ext = "\\.(png|jpe?g|bmp|gif|tif)$",
  suffix = "_resmush",
  overwrite = FALSE,
  progress = TRUE,
  report = TRUE,
  recursive = FALSE,
  ...
)

Arguments

dir

Character or vector of characters representing paths of local directories.

ext

regex indicating the extensions of the files to be optimized. The default value would capture all the extensions admitted by the API.

suffix

Character, defaults to "_resmush". By default, a new file with the suffix is created in the same directory (i.e., optimized example.png would be example_resmush.png). Values "", NA and NULL would be the same than overwrite = TRUE.

overwrite

Logical. Should the files in dir be overwritten? If TRUE suffix would be ignored.

progress

Logical. Display a progress bar when needed.

report

Logical. Display a summary report of the process in the console. See also Value.

recursive

Logical. Should the dir file search recursive? See also list.files().

...

Arguments passed on to resmush_file

qlty

Only affects jpg files. Integer between 0 and 100 indicating the optimization level. For optimal results use vales above 90.

exif_preserve

Logical. Should the Exif information (if any) deleted? Default is to remove it (i.e. exif_preserve = FALSE).

Value

Writes on disk the optimized file if the API call is successful in the directories specified in dir.

In all cases, a (invisible) data frame with a summary of the process is returned as well.

See Also

reSmush.it API docs.

See resmush_clean_dir() to clean a directory of previous runs.

Other functions for optimizing: resmush_file(), resmush_url()

Examples

# Get example dir and copy
example_dir <- system.file("extimg", package = "resmush")
temp_dir <- tempdir()
file.copy(example_dir, temp_dir, recursive = TRUE)

# Dest folder

dest_folder <- file.path(tempdir(), "extimg")


# Non-recursive
resmush_dir(dest_folder)
resmush_clean_dir(dest_folder)

# Recursive
summary <- resmush_dir(dest_folder, recursive = TRUE)

# Same info in the invisible df
summary[, -c(1, 2)]

# Display with png
if (require("png", quietly = TRUE)) {
  a_png <- grepl("png$", summary$dest_img)
  my_png <- png::readPNG(summary[a_png, ]$dest_img[2])
  grid::grid.raster(my_png)
}

# Clean up example
unlink(dest_folder, force = TRUE, recursive = TRUE)