1 if (require("knitr")) {
2 if (packageVersion("knitr") < '1.9.19') {
3 stop("knitr must be version 1.9.20 or higher")
5 } else stop("knitr 1.9.20 or above is needed to build the lessons.")
7 if (!require("stringr"))
8 stop("The package stringr is required for generating the lessons.")
10 src_rmd <- list.files(pattern = "??-*.Rmd$", path = "_episodes_rmd", full.names = TRUE)
11 dest_md <- file.path("_episodes", gsub("Rmd$", "md", basename(src_rmd)))
13 for (i in seq_along(src_rmd)) {
14 knitr::knit(src_rmd[i], output = dest_md[i])