14 Extending openxlsx2
14.1 msoc - Encrypting / Decrypting workbooks
You might want to look at msoc (Garbuszus 2023) for openxml file level encryption/decryption.
library(msoc)
xlsx <- temp_xlsx()
# let us write some worksheet
wb_workbook()$add_worksheet()$add_data(x = mtcars)$save(xlsx)
# now we can encrypt it
encrypt(xlsx, xlsx, pass = "msoc")
#> [1] "/tmp/RtmpHIwW21/temp_xlsx_1dfc5272eb82.xlsx"
# the file is encrypted, we can not read it
try(wb <- wb_load(xlsx))
#> Error : Unable to open and load file: /tmp/RtmpHIwW21/temp_xlsx_1dfc5272eb82.xlsx
# we have to decrypt it first
decrypt(xlsx, xlsx, pass = "msoc")
#> [1] "/tmp/RtmpHIwW21/temp_xlsx_1dfc5272eb82.xlsx"
# now we can load it again
wb_load(xlsx)$to_df() %>% head()
#> mpg cyl disp hp drat wt qsec vs am gear carb
#> 2 21.0 6 160 110 3.90 2.620 16.46 0 1 4 4
#> 3 21.0 6 160 110 3.90 2.875 17.02 0 1 4 4
#> 4 22.8 4 108 93 3.85 2.320 18.61 1 1 4 1
#> 5 21.4 6 258 110 3.08 3.215 19.44 1 0 3 1
#> 6 18.7 8 360 175 3.15 3.440 17.02 0 0 3 2
#> 7 18.1 6 225 105 2.76 3.460 20.22 1 0 3 1
14.2 flexlsx - Exporting flextable to workbooks
Using flexlsx (Heidler 2024) you can extend openxlsx2 to write flextable objects (Gohel and Skintzos 2023) to spreadsheets. Various styling options are supported. A detailed description how to create flextables is given in the flextable book (a link is in the bibliography).
library(flexlsx)
wb <- wb_workbook()$add_worksheet("mtcars", grid_lines = FALSE)
# Create a flextable and an openxlsx2 workbook
ft <- flextable::as_flextable(table(mtcars[2:5 , 1:2]))
ft
# add the flextable ft to the workbook, sheet "mtcars"
# offset the table to cell 'C2'
wb <- flexlsx::wb_add_flextable(wb, "mtcars", ft, dims = "C2")
if (interactive()) wb$open()