Handy File and String Manipulation
Convenient functions for moving files, deleting directories,
and a variety of string operations that facilitate manipulating files
and extracting information from strings.
Convenient functions for moving files, deleting directories, and a variety of string operations that facilitate manipulating file names and extracting information from strings.
To install the release version (recommended) from CRAN, in R, enter
To install the development version, in R, first install
install.packages("devtools"). Then enter
First let's load the library:
#> Loading required package: stringr
Move files around
I find it bizarre that base R has no
file.move. To move a file, you have to unintuitively rename it.
file.move(files, destinations). This function has the nice feature that if you try to move files to a directory that doesn't exist, it creates the directory first and then puts the files inside. Let's create a directory and a file:
#>  TRUE
Now let's put the file into the directory:
#> 1 file moved. 0 failed.
To delete directories with base R, one has to use
unlink(..., recursive = TRUE). The
filesstrings package gives you
dir.remove() which does the same job.
#> 1 directory deleted. 0 failed to delete.
Remove spaces from file names
"A space in your file name is a hole in your soul." - Jenny Bryan
remove_filename_spaces(replacement = "_") replaces them all with underscores for all files in a directory. By default, they are replaced with nothing.
file.create(c("file 1.txt", "file 2.txt"))
#>  TRUE TRUE
remove_filename_spaces(pattern = "txt$", replacement = "_")
#> 2 files renamed. 0 failed to rename.
list.files(pattern = "txt$")
#>  "file_1.txt" "file_2.txt"
file.remove(list.files(pattern = "txt$")) # clean up
#>  TRUE TRUE
The nth number in a string
I often want to get the first, last or nth number in a string.
pop <- "A population of 1000 comprised of 488 dogs and 512 cats." nth_number(pop, 1)
#>  1000
nth_number(pop, -1) # last number
#>  512
All the numbers in a string
#> [] #>  1000 488 512
All the non-numbers in a string
#> [] #>  "A population of " " comprised of " " dogs and " #>  " cats."
Trim anything (not just whitespace)
str_trim just trims whitespace. What if you want to trim something else? Now you can
#>  "rmarkdown"
Contributions to this package are welcome. The preferred method of contribution is through a github pull request. Feel free to contact me by creating an issue. Please note that this project is released with a Contributor Code of Conduct. By participating in this project you agree to abide by its terms.
Functions in filesstrings
|extend_char_vec||Pad a character vector with empty strings.|
|extract_numbers||Extract numbers (or non-numbers) from a string.|
|can_be_numeric||Check if a string could be considered as numeric.|
|before_last_dot||Get the part of a string before the last period.|
|create_dir||Create directories if they don't already exist|
|put_in_pos||Put specified strings in specified positions in an otherwise empty character vector.|
|all_equal||A more flexible version of all.equal for vectors.|
|rename_with_nums||Replace file names with numbers|
|singleize||Remove back-to-back duplicates of a pattern in a string.|
|filesstrings||filesstrings: handy file and string manipulation|
|give_ext||Ensure a file name has the intended extension.|
|str_nth_instance_indices||Get the indices of the \(n\)th instance of a pattern.|
|group_close||Group together close adjacent elements of a vector.|
|str_paste_elems||Extract bits of a string and paste them together|
|trim_anything||Trim something other than whitespace|
|unitize_dirs||Put files with the same unit measurements into directories|
|nice_file_nums||Make file numbers comply with alphabetical order|
|count_matches||Count the number of the matches of a pattern in a string.|
|nice_nums||Make string numbers comply with alphabetical order|
|remove_filename_spaces||Remove spaces in file names|
|remove_quoted||Remove the quoted parts of a string.|
|str_to_vec||Convert a string to a vector of characters|
|str_after_nth||Text before or after \(n\)th occurrence of pattern.|
|str_with_patterns||Which strings match the patterns?|
|str_elem||Extract a single character from a string, using its index.|
|currency||Get the currencies of numbers within a string.|
|locate_braces||Locate the braces in a string.|
|move_files||Move files around.|
|str_split_by_nums||Split a string by its numeric characters.|
|str_split_camel_case||Split a string based on CamelCase|
Vignettes of filesstrings
Last month downloads
|Packaged||2017-12-01 12:01:02 UTC; rnolan|
|Date/Publication||2017-12-01 12:05:54 UTC|
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