If you install the HOQCutil package from GitHub you can use the function HOQCutil::my_knit in your YAML the following way:
---
hoqc_output: ./output/new1_name
knit: (function (...) { source('myknit.R'); myknit(...) })
...
output: html_document
---
This will create a subfolder output if necessary and place the output in that folder under the name new1_name.html .
If you only need the functionality to change the output name or folder you can also use the functions below. Just copy them in your folder in the file myknit.R and use the following YAML:
---
hoqc_output: ./output/new2_name
knit: (function (...) { source('myknit.R'); myknit(...) })
...
output: html_document
---
The two functions to copy (with the same MIT License as the package) are the following:
myknit <-
function (inputFile,
encoding = getOption("encoding"),
hoqc_render = TRUE,
clean = TRUE) {
# Acknowledgement: idea comes from
# https://stackoverflow.com/questions/39885363/importing-common-yaml-in-rstudio-knitr-document
# This is abbreviated version of HOQCutil::myknit
# read in the src file
rmd <- readLines(inputFile)
# the line numbers of the start and end line for the yaml section
yaml_ind <- stringr::str_which(rmd, '^---$')[1:2]
# retrieve the yaml metadata block
yaml <- rmd[do.call(seq.int, as.list(yaml_ind))]
# first document type determines the output type
doctype_line <-
c(stringr::str_subset(yaml, 'pdf_document|html_document'),
'html_document')[1]
doc_type <- stringr::str_match(doctype_line, '(pdf|html)_document')[1, 2]
# search hoqc_output
values <- list()
ix = stringr::str_which(yaml,'^hoqc_output')
if (length(ix)>0) {
ix = ix[1]
a = stringr::str_squish(yaml[ix])
a = stringr::str_extract(a,"(?<=hoqc_output).+")
a = stringr::str_extract(a,"[^: ]{1,3}(.+)$")
a = stringr::str_remove_all(a,"[\"']")
values[['hoqc_output']] <- a
}
# determine output name for pdf or html file
if (!is.null(values[['hoqc_output']])) {
hoqc_output = values[['hoqc_output']]
hoqc_output = myknit_force_ext(hoqc_output, doc_type)
} else {
inputFileb <- strsplit(inputFile, '.', fixed = T)[[1]][1]
hoqc_output = myknit_force_ext(inputFileb, doc_type)
}
ofile <-
rmarkdown::render(
inputFile,
encoding = encoding,
output_file = hoqc_output,
envir = new.env(),
clean = clean
)
}
myknit_force_ext <- function (filename, doc_type, tf=T, suffix='') {
# optionally give an extension or suffix to filename
# ensure tf becomes a logical variable
tf1 <- as.logical(tf)
if (is.na(tf1))
tf1 = switch(tolower(tf), yes = T, no = F, T)
# do not consider path
filename1 <- basename(filename)
dirname1 <- dirname(filename)
# split proper name and extension
ibe <- strsplit(filename1, '.', fixed = T)
# unpack the list
ibe <- ibe[[1]]
# append suffix to proper name
ibe[1] <- paste0(ibe[[1]][1], suffix)
# if extension is required add the given one (will only be used when length(ibe) ==1)
if (tf1 == TRUE)
ibe <- c(ibe, doc_type)
# new filename
if (length(ibe) < 2)
newname <- ibe
else
newname <- paste(ibe[1:2], collapse = '.')
# ensure that folders exist and retrieve the full name
`%>%` <- magrittr::`%>%`
newname <- paste(dirname1, newname, sep = '/')
newname %>% fs::path_dir() %>% fs::dir_create()
already_there <- fs::file_exists(newname)
newname %>% fs::file_create() %>% fs::path_real() %>% as.character() -> newname
newname
}