R/reveal.js.R
In trinker/reports: An R Package to Assist in the Workflow of Writing Academic Articles and Other Reports
#' Convert md to HTML5 reveal.js
#'
#' Uses \href{pandoc}{http://johnmacfarlane.net/pandoc/} to convert md to HTML5
#' \href{http://lab.hakim.se/reveal-js/}{reveal.js} slides and provides minor
#' modifications (e.g., embedded youtube and hanging indent text, etc.).
#'
#' @param theme possible reveal.js themes: c(\code{"sky"}, \code{"beige"},
#' \code{"simple"}, \code{"serif"}, \code{"night"}, \code{"default"}).
#' @param transition possible reveal.js transitions: c(\code{"default"},
#' \code{"cube"}, \code{"page"}, \code{"concave"}, \code{"zoom"},
#' \code{"linear"}, \code{"fade"}, \code{"none"}).
#' @param in.file A character vector of the md file.
#' @param out.dir A character vector of the out directory. Default uses the
#' root name and outputs to a directory called reveal_js.
#' @param ref.page The title of the reference page (adds hanging indent and
#' reduces font size). If \code{NULL} references slide will not be adjusted.
#' If reference title is not found a warning will print.
#' @param refs.cex The font size to make the references.
#' @param path The path to where the documents reside. Default is the
#' PRESENTATION directory. This conveniently allows for non paths to be supplied
#' to \code{in.file} and \code{out.file}. Paths can be supplied to
#' \code{in.file} and \code{out.file} by setting \code{path} to \code{NULL}.
#' @param figure.dir The name of the figures directory where figures are stored.
#' This should be in the presentation folder. By default it is called figure.
#' @param hi.cex The font size to make the hanging indent coded text if \code{hi}
#' code chunk is used.
#' @details Outputs a directory, revel_js, with an index.html and necessary
#' \href{http://lab.hakim.se/reveal-js/}{reveal.js} files. The user must have
#' Pandoc installed and on their path.
#' Pandoc can be installed from: \cr \href{http://johnmacfarlane.net/pandoc/installing.html}{http://johnmacfarlane.net/pandoc/installing.html}
#' @section Code Chunks: The following convenience code chunks are implemented:
#' \enumerate{
#' \item{\bold{bg-} - Place after a slide title to change background color.
#' Currently takes \code{bg-soothe}, \code{bg-blackout}, \code{bg-alert},
#' \code{ red }, \code{ orange }, \code{ yellow }, \code{ green },
#' \code{ blue }, \code{ indigo }, \code{ violet }, or \code{ brown }.}
#' \item{\bold{frag-} - Using a dash/space (- ) has the usual effect of text
#' appearing however special effects can be applied to text by using the
#' dash/space followed by the text and followed by \code{[[[]]]=frag-} and
#' last a fragment style. Valid styles include: \code{grow}, \code{shrink},
#' \code{roll-in}, \code{fade-out}, \code{highlight-red}, \code{highlight-green},
#' or \code{highlight-blue}.}
#' \item{\bold{hi} - Wrapping text with this code chunk will result in
#' hanging indentation. Use \code{hi.cex} to control the font size of the text.}
#' \item{\bold{notes} - Wrap presenter notes that work when slides are uploaded
#' to the Internet. Press "s" to get the speaker notes window.}
#' \item{\bold{small} - Wrap text to produce small font.}
#' \item{\bold{sud} & \bold{eud}- Wrap a group of slides to give the nested up
#' and down capabilities. start-up-down (sud) goes directly above the beginning
#' side in the .Rmd file, end-up-down (eud) goes directly at the end of the
#' last slide in the nested group, however there should be a space between
#' text and this code tag.}
#' \item{\bold{yt} - Wrap a youtube url or tag to embed a
#' youtube video.}
#' }
#' Code chunks use the following form: \bold{[[[text]]]=code.tag} (e.g.,
#' \bold{[[[cokNUTGtoM4]]]=yt} embeds a youtube video. Currently this
#' is a convenience feature that may have unexpected results and may need
#' additional tweaking within the html output. When using embedded youtube,
#' slide titles and text are ignored but may effect the spacing of the player.
#' User additions are welcomed.
#'
#' reports based code chunks are for convenience. For more control many HTML
#' tags work with Rmarkdown. The output code can also be manipulated for finer
#' control.
#'
#' @export
#' @section Warning: reveal.js is deprecated and will be removed from reports in
#' a version subsequent to version 0.2.0. It is recomended for the user to become
#' familiar with the slidify approach to html5 presentations as this will be the
#' framework used by the reports package.
#' @seealso \code{\link[reports]{html5}}
#' @examples
#' \dontrun{
#' #Run after running knitr on an Rmd file
#' reveal.js() #assumes location of html file out of the box
#'
#' # An example .Rmd file can be found:
#' system.file("extdata/docs/example.Rmd", package = "reports")
#' }
reveal.js <-
function(theme = "default", transition = "default", in.file = NULL,
out.dir = path, ref.page = "References", refs.cex = 15,
path = file.path(getwd(), "PRESENTATION"), figure.dir = "figure",
hi.cex = 25) {
.Deprecated(msg = paste("reveal.js is deprecated. Please use the",
"functionality of the slidify package."),
old = as.character(sys.call(sys.parent()))[1L])
if (!is.null(path)) {
WD <- getwd()
on.exit(setwd(WD))
setwd(path)
}
if(file.exists(file.path(path, "reveal_js"))) {
delete(file.path(path, "reveal.js"))
}
if(is.null(out.dir)) {
out.dir <- path
}
root <- system.file("extdata/reveal_js", package = "reports")
file.copy(root, out.dir, recursive = TRUE)
x <- file.path(out.dir, "reveal_js")
if (is.null(in.file)) {
in.file <- dir(path)[tools::file_ext(dir(path)) == "md"][1]
}
if (is.na(in.file)) stop("run Knit HTML on the .Rmd file first")
out.file <- file.path(x, paste0(unlist(strsplit(in.file, "\\."))[1], ".html"))
tmp <- tempdir()
file.copy(in.file, tmp)
of <- file.path(tmp, basename(out.dir))
action <- paste0(wheresPandoc(), " -s -S -i -t dzslides --mathjax ", in.file,
" -o ", of)
system(action)
if (!is.null(ref.page)) {
HI <- c(".hangingindent {", " padding-left: 40px ;",
" text-indent: -35px ;", "}")
HTML5 <- suppressWarnings(readLines(of))
start <- paste0("<h1>", ref.page)
start <- which(grepl(start, HTML5))
if (identical(start, integer(0))) {
warning("ref.page not found; argument was ignored")
NEW <- suppressWarnings(readLines(of))
} else {
end <- "</section>"
end <- which(grepl(end, HTML5))
end <- end[c(end - start) > 0][1]
len <- seq_along(HTML5)
reps <- which(grepl("<p", HTML5) & HTML5 != "<p>" &
len > start & len < end)
start2 <- reps[1]
HTML5[start2:end][HTML5[start2:end] == "<p>"] <- "DELETEMEIMEDIATELY"
SUB <- paste0("<p class=\"hangingindent\" style=\"font-size:",
refs.cex, "px;\">")
HTML5[reps] <- gsub("<p>", SUB, HTML5[reps])
reprms <- which(HTML5 == "<p>" & len > (start + 1) & len < end)
HTML5 <- HTML5[HTML5 != "DELETEMEIMEDIATELY"]
splpoint <-which(grepl("Transition effect", HTML5))
NEW <- c(HTML5[1:(splpoint - 1)], HI, na.omit(HTML5[splpoint:max(len)]))
}
} else {
NEW <- suppressWarnings(readLines(of))
}
small <- which(grepl("]]]=small", NEW, fixed = TRUE))
if (length(small) > 0) {
NEW[small] <- mgsub(c("[[[", "]]]=small"),
c("\n<p>\n<small>\n", "\n</small>\n</p>\n"), NEW[small], fixed = TRUE)
}
tmp <- tempdir()
cat(paste0(NEW, collapse = "\n"), file=file.path(tmp, "temphtml"))
NEW <- suppressWarnings(readLines(file.path(tmp, "temphtml")))
frag <- which(grepl("[[[]]]=frag", NEW, fixed = TRUE))
if (length(frag) > 0) {
NEW[frag] <-gsub("<li>", "<li class=\"fragment\">", NEW[frag])
fraginst <- genXtract(NEW[frag], "[[[]]]=frag-", "</li>")
fraginst <- gsub("</p>", "", fraginst)
inserts <- paste0(genX(NEW[frag], "[[[]]]=frag-", "</li>"), "</li>")
inserts <- gsub("<p>", "", inserts)
A <- unlist(strsplit(inserts, "fragment>"))[c(TRUE, FALSE)]
B <- unlist(strsplit(inserts, "fragment>"))[c(FALSE, TRUE)]
NEW[frag] <- mgsub(c("<li", "</li>"), c("<p", "</p>"), paste0(A,
"\"fragment ", fraginst, "\">", B), fixed=TRUE)
NEW[frag] <- gsub("[[[]]]=frag", "", NEW[frag], fixed=TRUE)
}
ud1 <- which(grepl("[[[]]]=sud", NEW, fixed = TRUE))
ud2 <- which(grepl("[[[]]]=eud", NEW, fixed = TRUE))
ext1 <- which.max(c(length(ud1), length(ud2)))
ext2 <- which.min(c(length(ud1), length(ud2)))
if (length(ud1) != length(ud1)) {
codes <- c("[[[]]]=sud","[[[]]]=eud")
stop(paste0("More ", codes[ext1], " code chunks than ", codes[ext2]))
}
if (length(ud1) > 0) {
reps1 <- mgsub(c("<p>[[[]]]=sud # ", "<p>[[[]]]=sud #", "</p>"),
c("</section>\n<section>\n<section>\n<h1>",
"</section>\n<section>\n<section>\n<h1>", "</h1>"),
NEW[ud1], fixed = TRUE)
reps2 <- mgsub(c("<p>[[[]]]=eud</p>"),
c("</section>"), NEW[ud2], fixed = TRUE)
NEW[ud1] <- reps1
NEW[ud2] <- reps2
}
notes <- which(grepl("]]]=notes</p>", NEW, fixed = TRUE))
if (length(notes) > 0) {
nts <- mgsub(c("]]]=notes</p>", "[[["),
c("</aside>\n", "\n<aside class=\"notes\">\n"), NEW[notes], fixed = TRUE)
NEW[notes] <- nts
}
lchunk <- grepl("[[[", NEW, fixed = TRUE)
yt <- which(lchunk & grepl("]]]=yt-ap", NEW, fixed = TRUE))
if (!identical(yt, integer(0))) {
yt2 <- mgsub(c("<p>[[[", "]]]=yt-ap</p>"), "", NEW[yt], fixed = TRUE)
yt2b <- strsplit(yt2, "v=")
yt2c <- strsplit(sapply(yt2b, function(x) x[length(x)]), "&")
tags <- sapply(yt2c, function(x) x[1])
yt3 <- paste0("<iframe class=\"youtube-player\" type=\"text/html\" width=\"800\" height=\"500\" src=\"http://www.youtube.com/embed/",
tags, "?autoplay=1", "\" frameborder=\"0\"> </iframe>")
NEW[yt] <- yt3
}
lchunk <- grepl("[[[", NEW, fixed = TRUE)
yt <- which(lchunk & grepl("]]]=yt", NEW, fixed = TRUE))
if (!identical(yt, integer(0))) {
yt2 <- mgsub(c("<p>[[[", "]]]=yt</p>"), "", NEW[yt], fixed = TRUE)
yt2b <- strsplit(yt2, "v=")
yt2c <- strsplit(sapply(yt2b, function(x) x[length(x)]), "&")
tags <- sapply(yt2c, function(x) x[1])
yt3 <- paste0("<iframe class=\"youtube-player\" type=\"text/html\" width=\"800\" height=\"500\" src=\"http://www.youtube.com/embed/",
tags, "\" frameborder=\"0\"> </iframe>")
NEW[yt] <- yt3
}
tmp <- tempdir()
cat(paste0(NEW, collapse = "\n"), file=file.path(tmp, "temphtml"))
NEW <- suppressWarnings(readLines(file.path(tmp, "temphtml")))
bq <- which(grepl("<blockquote>", NEW, fixed = TRUE)) + 1
if (!identical(bq, integer(0))) {
front <- "<blockquote cite=\"http://searchservervirtualization.techtarget.com/definition/Our-Favorite-Technology-Quotations\">\n"
NEW <- mgsub(c("<blockquote>"), c(front), NEW, fixed = TRUE)
NEW[bq] <- mgsub(c("<p>", "</p>"), "", NEW[bq], fixed = TRUE)
}
lchunk <- grepl("[[[", NEW, fixed = TRUE)
hi <- which(lchunk & grepl("]]]=hi", NEW, fixed = TRUE))
if (!identical(hi, integer(0))) {
reps <-lapply(strsplit(NEW[hi], "]]]=hi<br>"), function(x) {
mgsub(pattern = c("[[[", "<p>", "]]]=hi</p>"), replacement = "", x)
})
reps <- lapply(reps, function(x) {
paste0("<p class=\"hangingindent\" style=\"font-size:", hi.cex,
"px;\">", x, "</p>")
})
ends <- c(hi -1, length(NEW))
starts <- c(1, hi + 1)
out <- c()
for (i in seq_along(length(reps))){
out <- c(out, NEW[starts[i]:ends[i]], unlist(reps[[i]]))
}
NEW <- c(out, NEW[starts[length(starts)]:ends[length(ends)]])
}
#browser()
bg <- which(grepl("[[[]]]=bg", NEW, fixed = TRUE))
if (length(bg) > 0) {
colscheme <- gsub("^\\s+|\\s+$", "", genXtract(NEW[bg], "bg-", "</h1>"))
NEW[bg] <- paste0(genX(NEW[bg], "[[[]]]=bg-", "</h1>"), "</h1>")
NEW[bg-1] <- paste0("<section data-state=\"", colscheme,"\">")
}
end <- which(grepl("<!-- {{{{ dzslides core", NEW, fixed=TRUE)) - 1
start <- which(grepl("<body>", NEW, fixed=TRUE))[1] + 1
insert <- NEW[start:end]
out <- suppressWarnings(readLines(file.path(x, "index.html")))
key <- "<!-- SLIDE STUFF HERE -->"
locs <- which(grepl(key, out, fixed=TRUE))
NEW <- c(out[1:locs[1]], insert, out[locs[2]:(length(out))])
trn <- grepl("transition: Reveal.getQueryHash().transition ||", NEW, fixed=TRUE)
NEW[trn] <- paste0("transition: Reveal.getQueryHash().transition || '",
transition, "', // default/cube/page/concave/zoom/linear/fade/none")
thm <- grepl("<link rel=\"stylesheet\" href=\"css/theme/", NEW, fixed=TRUE)
NEW[thm] <- paste0("<link rel=\"stylesheet\" href=\"css/theme/", theme,
".css\" id=\"theme\">")
if (file.exists(file.path(path, figure.dir))) {
fig <- file.path(path, figure.dir)
file.copy(fig, x, recursive = TRUE)
}
NEW <- gsub("</section>", "</section>\n\n", NEW)
cat(paste0(NEW, collapse = "\n"), file=file.path(x, "index.html"))
cat("HTML5 reveal.js directory generated: click \"reveal_js/index.html\"!\n")
}
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#' Convert md to HTML5 reveal.js
#'
#' Uses \href{pandoc}{http://johnmacfarlane.net/pandoc/} to convert md to HTML5
#' \href{http://lab.hakim.se/reveal-js/}{reveal.js} slides and provides minor
#' modifications (e.g., embedded youtube and hanging indent text, etc.).
#'
#' @param theme possible reveal.js themes: c(\code{"sky"}, \code{"beige"},
#' \code{"simple"}, \code{"serif"}, \code{"night"}, \code{"default"}).
#' @param transition possible reveal.js transitions: c(\code{"default"},
#' \code{"cube"}, \code{"page"}, \code{"concave"}, \code{"zoom"},
#' \code{"linear"}, \code{"fade"}, \code{"none"}).
#' @param in.file A character vector of the md file.
#' @param out.dir A character vector of the out directory. Default uses the
#' root name and outputs to a directory called reveal_js.
#' @param ref.page The title of the reference page (adds hanging indent and
#' reduces font size). If \code{NULL} references slide will not be adjusted.
#' If reference title is not found a warning will print.
#' @param refs.cex The font size to make the references.
#' @param path The path to where the documents reside. Default is the
#' PRESENTATION directory. This conveniently allows for non paths to be supplied
#' to \code{in.file} and \code{out.file}. Paths can be supplied to
#' \code{in.file} and \code{out.file} by setting \code{path} to \code{NULL}.
#' @param figure.dir The name of the figures directory where figures are stored.
#' This should be in the presentation folder. By default it is called figure.
#' @param hi.cex The font size to make the hanging indent coded text if \code{hi}
#' code chunk is used.
#' @details Outputs a directory, revel_js, with an index.html and necessary
#' \href{http://lab.hakim.se/reveal-js/}{reveal.js} files. The user must have
#' Pandoc installed and on their path.
#' Pandoc can be installed from: \cr \href{http://johnmacfarlane.net/pandoc/installing.html}{http://johnmacfarlane.net/pandoc/installing.html}
#' @section Code Chunks: The following convenience code chunks are implemented:
#' \enumerate{
#' \item{\bold{bg-} - Place after a slide title to change background color.
#' Currently takes \code{bg-soothe}, \code{bg-blackout}, \code{bg-alert},
#' \code{ red }, \code{ orange }, \code{ yellow }, \code{ green },
#' \code{ blue }, \code{ indigo }, \code{ violet }, or \code{ brown }.}
#' \item{\bold{frag-} - Using a dash/space (- ) has the usual effect of text
#' appearing however special effects can be applied to text by using the
#' dash/space followed by the text and followed by \code{[[[]]]=frag-} and
#' last a fragment style. Valid styles include: \code{grow}, \code{shrink},
#' \code{roll-in}, \code{fade-out}, \code{highlight-red}, \code{highlight-green},
#' or \code{highlight-blue}.}
#' \item{\bold{hi} - Wrapping text with this code chunk will result in
#' hanging indentation. Use \code{hi.cex} to control the font size of the text.}
#' \item{\bold{notes} - Wrap presenter notes that work when slides are uploaded
#' to the Internet. Press "s" to get the speaker notes window.}
#' \item{\bold{small} - Wrap text to produce small font.}
#' \item{\bold{sud} & \bold{eud}- Wrap a group of slides to give the nested up
#' and down capabilities. start-up-down (sud) goes directly above the beginning
#' side in the .Rmd file, end-up-down (eud) goes directly at the end of the
#' last slide in the nested group, however there should be a space between
#' text and this code tag.}
#' \item{\bold{yt} - Wrap a youtube url or tag to embed a
#' youtube video.}
#' }
#' Code chunks use the following form: \bold{[[[text]]]=code.tag} (e.g.,
#' \bold{[[[cokNUTGtoM4]]]=yt} embeds a youtube video. Currently this
#' is a convenience feature that may have unexpected results and may need
#' additional tweaking within the html output. When using embedded youtube,
#' slide titles and text are ignored but may effect the spacing of the player.
#' User additions are welcomed.
#'
#' reports based code chunks are for convenience. For more control many HTML
#' tags work with Rmarkdown. The output code can also be manipulated for finer
#' control.
#'
#' @export
#' @section Warning: reveal.js is deprecated and will be removed from reports in
#' a version subsequent to version 0.2.0. It is recomended for the user to become
#' familiar with the slidify approach to html5 presentations as this will be the
#' framework used by the reports package.
#' @seealso \code{\link[reports]{html5}}
#' @examples
#' \dontrun{
#' #Run after running knitr on an Rmd file
#' reveal.js() #assumes location of html file out of the box
#'
#' # An example .Rmd file can be found:
#' system.file("extdata/docs/example.Rmd", package = "reports")
#' }
reveal.js <-
function(theme = "default", transition = "default", in.file = NULL,
out.dir = path, ref.page = "References", refs.cex = 15,
path = file.path(getwd(), "PRESENTATION"), figure.dir = "figure",
hi.cex = 25) {
.Deprecated(msg = paste("reveal.js is deprecated. Please use the",
"functionality of the slidify package."),
old = as.character(sys.call(sys.parent()))[1L])
if (!is.null(path)) {
WD <- getwd()
on.exit(setwd(WD))
setwd(path)
}
if(file.exists(file.path(path, "reveal_js"))) {
delete(file.path(path, "reveal.js"))
}
if(is.null(out.dir)) {
out.dir <- path
}
root <- system.file("extdata/reveal_js", package = "reports")
file.copy(root, out.dir, recursive = TRUE)
x <- file.path(out.dir, "reveal_js")
if (is.null(in.file)) {
in.file <- dir(path)[tools::file_ext(dir(path)) == "md"][1]
}
if (is.na(in.file)) stop("run Knit HTML on the .Rmd file first")
out.file <- file.path(x, paste0(unlist(strsplit(in.file, "\\."))[1], ".html"))
tmp <- tempdir()
file.copy(in.file, tmp)
of <- file.path(tmp, basename(out.dir))
action <- paste0(wheresPandoc(), " -s -S -i -t dzslides --mathjax ", in.file,
" -o ", of)
system(action)
if (!is.null(ref.page)) {
HI <- c(".hangingindent {", " padding-left: 40px ;",
" text-indent: -35px ;", "}")
HTML5 <- suppressWarnings(readLines(of))
start <- paste0("<h1>", ref.page)
start <- which(grepl(start, HTML5))
if (identical(start, integer(0))) {
warning("ref.page not found; argument was ignored")
NEW <- suppressWarnings(readLines(of))
} else {
end <- "</section>"
end <- which(grepl(end, HTML5))
end <- end[c(end - start) > 0][1]
len <- seq_along(HTML5)
reps <- which(grepl("<p", HTML5) & HTML5 != "<p>" &
len > start & len < end)
start2 <- reps[1]
HTML5[start2:end][HTML5[start2:end] == "<p>"] <- "DELETEMEIMEDIATELY"
SUB <- paste0("<p class=\"hangingindent\" style=\"font-size:",
refs.cex, "px;\">")
HTML5[reps] <- gsub("<p>", SUB, HTML5[reps])
reprms <- which(HTML5 == "<p>" & len > (start + 1) & len < end)
HTML5 <- HTML5[HTML5 != "DELETEMEIMEDIATELY"]
splpoint <-which(grepl("Transition effect", HTML5))
NEW <- c(HTML5[1:(splpoint - 1)], HI, na.omit(HTML5[splpoint:max(len)]))
}
} else {
NEW <- suppressWarnings(readLines(of))
}
small <- which(grepl("]]]=small", NEW, fixed = TRUE))
if (length(small) > 0) {
NEW[small] <- mgsub(c("[[[", "]]]=small"),
c("\n<p>\n<small>\n", "\n</small>\n</p>\n"), NEW[small], fixed = TRUE)
}
tmp <- tempdir()
cat(paste0(NEW, collapse = "\n"), file=file.path(tmp, "temphtml"))
NEW <- suppressWarnings(readLines(file.path(tmp, "temphtml")))
frag <- which(grepl("[[[]]]=frag", NEW, fixed = TRUE))
if (length(frag) > 0) {
NEW[frag] <-gsub("<li>", "<li class=\"fragment\">", NEW[frag])
fraginst <- genXtract(NEW[frag], "[[[]]]=frag-", "</li>")
fraginst <- gsub("</p>", "", fraginst)
inserts <- paste0(genX(NEW[frag], "[[[]]]=frag-", "</li>"), "</li>")
inserts <- gsub("<p>", "", inserts)
A <- unlist(strsplit(inserts, "fragment>"))[c(TRUE, FALSE)]
B <- unlist(strsplit(inserts, "fragment>"))[c(FALSE, TRUE)]
NEW[frag] <- mgsub(c("<li", "</li>"), c("<p", "</p>"), paste0(A,
"\"fragment ", fraginst, "\">", B), fixed=TRUE)
NEW[frag] <- gsub("[[[]]]=frag", "", NEW[frag], fixed=TRUE)
}
ud1 <- which(grepl("[[[]]]=sud", NEW, fixed = TRUE))
ud2 <- which(grepl("[[[]]]=eud", NEW, fixed = TRUE))
ext1 <- which.max(c(length(ud1), length(ud2)))
ext2 <- which.min(c(length(ud1), length(ud2)))
if (length(ud1) != length(ud1)) {
codes <- c("[[[]]]=sud","[[[]]]=eud")
stop(paste0("More ", codes[ext1], " code chunks than ", codes[ext2]))
}
if (length(ud1) > 0) {
reps1 <- mgsub(c("<p>[[[]]]=sud # ", "<p>[[[]]]=sud #", "</p>"),
c("</section>\n<section>\n<section>\n<h1>",
"</section>\n<section>\n<section>\n<h1>", "</h1>"),
NEW[ud1], fixed = TRUE)
reps2 <- mgsub(c("<p>[[[]]]=eud</p>"),
c("</section>"), NEW[ud2], fixed = TRUE)
NEW[ud1] <- reps1
NEW[ud2] <- reps2
}
notes <- which(grepl("]]]=notes</p>", NEW, fixed = TRUE))
if (length(notes) > 0) {
nts <- mgsub(c("]]]=notes</p>", "[[["),
c("</aside>\n", "\n<aside class=\"notes\">\n"), NEW[notes], fixed = TRUE)
NEW[notes] <- nts
}
lchunk <- grepl("[[[", NEW, fixed = TRUE)
yt <- which(lchunk & grepl("]]]=yt-ap", NEW, fixed = TRUE))
if (!identical(yt, integer(0))) {
yt2 <- mgsub(c("<p>[[[", "]]]=yt-ap</p>"), "", NEW[yt], fixed = TRUE)
yt2b <- strsplit(yt2, "v=")
yt2c <- strsplit(sapply(yt2b, function(x) x[length(x)]), "&")
tags <- sapply(yt2c, function(x) x[1])
yt3 <- paste0("<iframe class=\"youtube-player\" type=\"text/html\" width=\"800\" height=\"500\" src=\"http://www.youtube.com/embed/",
tags, "?autoplay=1", "\" frameborder=\"0\"> </iframe>")
NEW[yt] <- yt3
}
lchunk <- grepl("[[[", NEW, fixed = TRUE)
yt <- which(lchunk & grepl("]]]=yt", NEW, fixed = TRUE))
if (!identical(yt, integer(0))) {
yt2 <- mgsub(c("<p>[[[", "]]]=yt</p>"), "", NEW[yt], fixed = TRUE)
yt2b <- strsplit(yt2, "v=")
yt2c <- strsplit(sapply(yt2b, function(x) x[length(x)]), "&")
tags <- sapply(yt2c, function(x) x[1])
yt3 <- paste0("<iframe class=\"youtube-player\" type=\"text/html\" width=\"800\" height=\"500\" src=\"http://www.youtube.com/embed/",
tags, "\" frameborder=\"0\"> </iframe>")
NEW[yt] <- yt3
}
tmp <- tempdir()
cat(paste0(NEW, collapse = "\n"), file=file.path(tmp, "temphtml"))
NEW <- suppressWarnings(readLines(file.path(tmp, "temphtml")))
bq <- which(grepl("<blockquote>", NEW, fixed = TRUE)) + 1
if (!identical(bq, integer(0))) {
front <- "<blockquote cite=\"http://searchservervirtualization.techtarget.com/definition/Our-Favorite-Technology-Quotations\">\n"
NEW <- mgsub(c("<blockquote>"), c(front), NEW, fixed = TRUE)
NEW[bq] <- mgsub(c("<p>", "</p>"), "", NEW[bq], fixed = TRUE)
}
lchunk <- grepl("[[[", NEW, fixed = TRUE)
hi <- which(lchunk & grepl("]]]=hi", NEW, fixed = TRUE))
if (!identical(hi, integer(0))) {
reps <-lapply(strsplit(NEW[hi], "]]]=hi<br>"), function(x) {
mgsub(pattern = c("[[[", "<p>", "]]]=hi</p>"), replacement = "", x)
})
reps <- lapply(reps, function(x) {
paste0("<p class=\"hangingindent\" style=\"font-size:", hi.cex,
"px;\">", x, "</p>")
})
ends <- c(hi -1, length(NEW))
starts <- c(1, hi + 1)
out <- c()
for (i in seq_along(length(reps))){
out <- c(out, NEW[starts[i]:ends[i]], unlist(reps[[i]]))
}
NEW <- c(out, NEW[starts[length(starts)]:ends[length(ends)]])
}
#browser()
bg <- which(grepl("[[[]]]=bg", NEW, fixed = TRUE))
if (length(bg) > 0) {
colscheme <- gsub("^\\s+|\\s+$", "", genXtract(NEW[bg], "bg-", "</h1>"))
NEW[bg] <- paste0(genX(NEW[bg], "[[[]]]=bg-", "</h1>"), "</h1>")
NEW[bg-1] <- paste0("<section data-state=\"", colscheme,"\">")
}
end <- which(grepl("<!-- {{{{ dzslides core", NEW, fixed=TRUE)) - 1
start <- which(grepl("<body>", NEW, fixed=TRUE))[1] + 1
insert <- NEW[start:end]
out <- suppressWarnings(readLines(file.path(x, "index.html")))
key <- "<!-- SLIDE STUFF HERE -->"
locs <- which(grepl(key, out, fixed=TRUE))
NEW <- c(out[1:locs[1]], insert, out[locs[2]:(length(out))])
trn <- grepl("transition: Reveal.getQueryHash().transition ||", NEW, fixed=TRUE)
NEW[trn] <- paste0("transition: Reveal.getQueryHash().transition || '",
transition, "', // default/cube/page/concave/zoom/linear/fade/none")
thm <- grepl("<link rel=\"stylesheet\" href=\"css/theme/", NEW, fixed=TRUE)
NEW[thm] <- paste0("<link rel=\"stylesheet\" href=\"css/theme/", theme,
".css\" id=\"theme\">")
if (file.exists(file.path(path, figure.dir))) {
fig <- file.path(path, figure.dir)
file.copy(fig, x, recursive = TRUE)
}
NEW <- gsub("</section>", "</section>\n\n", NEW)
cat(paste0(NEW, collapse = "\n"), file=file.path(x, "index.html"))
cat("HTML5 reveal.js directory generated: click \"reveal_js/index.html\"!\n")
}
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