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
|filesstrings||filesstrings: handy file and string manipulation|
|locate_braces||Locate the braces in a string.|
|all_equal||A more flexible version of all.equal for vectors.|
|before_last_dot||Get the part of a string before the last period.|
|move_files||Move files around.|
|extend_char_vec||Pad a character vector with empty strings.|
|put_in_pos||Put specified strings in specified positions in an otherwise empty character vector.|
|extract_numbers||Extract numbers (or non-numbers) from a string.|
|can_be_numeric||Check if a string could be considered as numeric.|
|count_matches||Count the number of the matches of a pattern in a string.|
|remove_filename_spaces||Remove spaces in file names|
|create_dir||Create directories if they don't already exist|
|remove_quoted||Remove the quoted parts of a string.|
|currency||Get the currencies of numbers within a string.|
|str_split_by_nums||Split a string by its numeric characters.|
|str_after_nth||Text before or after \(n\)th occurrence of pattern.|
|str_elem||Extract a single character from a string, using its index.|
|str_split_camel_case||Split a string based on CamelCase|
|nice_file_nums||Make file numbers comply with alphabetical order|
|str_to_vec||Convert a string to a vector of characters|
|nice_nums||Make string numbers comply with alphabetical order|
|rename_with_nums||Replace file names with numbers|
|str_with_patterns||Which strings match the patterns?|
|singleize||Remove back-to-back duplicates of a pattern in a string.|
|trim_anything||Trim something other than whitespace|
|give_ext||Ensure a file name has the intended extension.|
|unitize_dirs||Put files with the same unit measurements into directories|
|group_close||Group together close adjacent elements of a vector.|
|str_nth_instance_indices||Get the indices of the \(n\)th instance of a pattern.|
|str_paste_elems||Extract bits of a string and paste them together|
Vignettes of filesstrings
Last month downloads
|Packaged||2017-12-12 13:49:17 UTC; rnolan|
|Date/Publication||2017-12-12 14:54:38 UTC|
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