reorganize folder
diff --git a/R/add_header_above.R b/R/add_header_above.R
new file mode 100644
index 0000000..d3634fa
--- /dev/null
+++ b/R/add_header_above.R
@@ -0,0 +1,103 @@
+#' Add an extra header row above the current header
+#' @export
+add_header_above <- function(kable_input, header = NULL) {
+ kable_format <- attr(kable_input, "format")
+ if (!kable_format %in% c("html", "latex")) {
+ stop("Please specify output format in your kable function. Currently ",
+ "generic markdown table using pandoc is not supported.")
+ }
+ if (kable_format == "html") {
+ return(htmlTable_add_header_above(kable_input, header))
+ }
+ if (kable_format == "latex") {
+ return(pdfTable_add_header_above(kable_input, header))
+ }
+}
+
+# HTML
+htmlTable_add_header_above <- function(kable_input, header = NULL) {
+ if (is.null(header)) return(kable_input)
+ kable_xml <- read_xml(as.character(kable_input), options = c("COMPACT"))
+ # somehow xml2 cannot directly search by name here (it will result in a crash)
+ kable_xml_thead <- xml_child(kable_xml, 1)
+ if (xml_name(kable_xml_thead) != "thead") {
+ kable_xml_thead <- xml_child(kable_xml, 2)
+ }
+
+ header <- standardize_header_input(header)
+
+ header_rows <- xml_children(kable_xml_thead)
+ bottom_header_row <- header_rows[[length(header_rows)]]
+ kable_ncol <- length(xml_children(bottom_header_row))
+ if (sum(header$colspan) != kable_ncol) {
+ stop("The new header row you provided has a different total number of ",
+ "columns with the original kable output.")
+ }
+
+ new_header_row <- htmlTable_new_header_generator(header)
+ xml_add_child(kable_xml_thead, new_header_row, .where = 0)
+ return(structure(as.character(kable_xml), format = "html",
+ class = "knitr_kable"))
+}
+
+standardize_header_input <- function(header) {
+ header_names <- names(header)
+
+ if (is.null(header_names)) {
+ return(data.frame(header = header, colspan = 1, row.names = NULL))
+ }
+
+ names(header)[header_names == ""] <- header[header_names == ""]
+ header[header_names == ""] <- 1
+ header_names <- names(header)
+ header <- as.numeric(header)
+ names(header) <- header_names
+ return(data.frame(header = names(header), colspan = header, row.names = NULL))
+}
+
+htmlTable_new_header_generator <- function(header_df) {
+ header_items <- apply(header_df, 1, function(x) {
+ paste0('<th style="text-align:center;" colspan="', x[2], '">',
+ x[1], '</th>')
+ })
+ header_text <- paste(c("<tr>", header_items, "</tr>"), collapse = "")
+ header_xml <- read_xml(header_text, options = c("COMPACT"))
+ return(header_xml)
+}
+
+# Add an extra header row above the current header in a LaTeX table ------
+pdfTable_add_header_above <- function(kable_input, header = NULL) {
+ table_info <- magic_mirror(kable_input)
+ header <- standardize_header_input(header)
+ hline_type <- switch(table_info$booktabs + 1, "\\\\hline", "\\\\toprule")
+ out <- sub(hline_type,
+ paste0(hline_type, "\n",
+ pdfTable_new_header_generator(header, table_info$booktabs)),
+ as.character(kable_input))
+ out <- structure(out, format = "latex", class = "knitr_kable")
+ return(out)
+}
+
+pdfTable_new_header_generator <- function(header_df, booktabs = F) {
+ if (booktabs) {
+ header_df$align <- "c"
+ } else {
+ header_df$align <- "|c|"
+ header_df$align[1] <- "c|"
+ header_df$align[nrow(header_df)] <- "|c"
+ }
+ header_items <- apply(header_df, 1, function(x) {
+ # if(x[2] == 1) return(x[1])
+ paste0('\\\\multicolumn{', x[2], '}{', x[3], '}{', x[1], "}")
+ })
+ header_text <- paste(paste(header_items, collapse = " & "), "\\\\\\\\")
+ cline_end <- cumsum(header_df$colspan)
+ cline_start <- c(0, cline_end) + 1
+ cline_start <- cline_start[-length(cline_start)]
+ cline_type <- switch(booktabs + 1, "\\\\cline{", "\\\\cmidrule(l{2pt}r{2pt}){")
+ cline <- paste0(cline_type, cline_start, "-", cline_end, "}")
+ cline <- cline[trimws(header_df$header) != ""]
+ cline <- paste(cline, collapse = " ")
+ header_text <- paste(header_text, cline)
+ return(header_text)
+}
diff --git a/R/html_add_header_above.R b/R/html_add_header_above.R
deleted file mode 100644
index c9b153e..0000000
--- a/R/html_add_header_above.R
+++ /dev/null
@@ -1,51 +0,0 @@
-#' Add an extra header row above the current header
-#' @export
-htmlTable_add_header_above <- function(kable_input, header = NULL) {
- # if (is.null(header)) return(kable_input)
- kable_xml <- read_xml(as.character(kable_input), options = c("COMPACT"))
- # somehow xml2 cannot directly search by name here (it will result in a crash)
- kable_xml_thead <- xml_child(kable_xml, 1)
- if (xml_name(kable_xml_thead) != "thead") {
- kable_xml_thead <- xml_child(kable_xml, 2)
- }
-
- header <- standardize_header_input(header)
-
- header_rows <- xml_children(kable_xml_thead)
- bottom_header_row <- header_rows[[length(header_rows)]]
- kable_ncol <- length(xml_children(bottom_header_row))
- if (sum(header$colspan) != kable_ncol) {
- stop("The new header row you provided has a different total number of ",
- "columns with the original kable output.")
- }
-
- new_header_row <- new_header_generator(header)
- xml_add_child(kable_xml_thead, new_header_row, .where = 0)
- return(structure(as.character(kable_xml), format = "html",
- class = "knitr_kable"))
-}
-
-standardize_header_input <- function(header) {
- header_names <- names(header)
-
- if (is.null(header_names)) {
- return(data.frame(header = header, colspan = 1, row.names = NULL))
- }
-
- names(header)[header_names == ""] <- header[header_names == ""]
- header[header_names == ""] <- 1
- header_names <- names(header)
- header <- as.numeric(header)
- names(header) <- header_names
- return(data.frame(header = names(header), colspan = header, row.names = NULL))
-}
-
-new_header_generator <- function(header_vector) {
- header_items <- apply(header_vector, 1, function(x) {
- paste0('<th style="text-align:center;" colspan="', x[2], '">',
- x[1], '</th>')
- })
- header_text <- paste(c("<tr>", header_items, "</tr>"), collapse = "")
- header_xml <- read_xml(header_text, options = c("COMPACT"))
- return(header_xml)
-}
diff --git a/R/kableExtra-package.R b/R/kableExtra-package.R
index 6f7fa7e..cb4d739 100644
--- a/R/kableExtra-package.R
+++ b/R/kableExtra-package.R
@@ -4,7 +4,8 @@
#' @importFrom xml2 read_xml xml_attr xml_has_attr xml_attr<- read_html
#' xml_child xml_children xml_name xml_add_sibling xml_add_child
#' @importFrom rvest html_table
-#' @importFrom knitr kable
+#' @importFrom knitr knit_meta_add
+#' @importFrom rmarkdown latex_dependency
#' @name kableExtra-package
#' @aliases kableExtra
#' @docType package
diff --git a/R/htmlTable_styling.R b/R/kable_styling.R
similarity index 61%
rename from R/htmlTable_styling.R
rename to R/kable_styling.R
index dcd0c96..9bde4f0 100644
--- a/R/htmlTable_styling.R
+++ b/R/kable_styling.R
@@ -16,6 +16,35 @@
#' @param font_size A numeric input for table font size
#'
#' @export
+kable_styling <- function(kable_input,
+ bootstrap_options = "basic",
+ full_width = T,
+ float = c("center", "left", "right"),
+ font_size = NULL,
+ latex_hold_position = F,
+ latex_scale_down = F) {
+ kable_format <- attr(kable_input, "format")
+ if (!kable_format %in% c("html", "latex")) {
+ stop("Please specify output format in your kable function. Currently ",
+ "generic markdown table using pandoc is not supported.")
+ }
+ if (kable_format == "html") {
+ return(htmlTable_styling(kable_input,
+ bootstrap_options = bootstrap_options,
+ full_width = full_width,
+ float = float,
+ font_size = font_size))
+ }
+ if (kable_format == "latex") {
+ return(pdfTable_styling(full_width = full_width,
+ float = float,
+ font_size = font_size,
+ latex_hold_position = latex_hold_position,
+ latex_scale_down = latex_scale_down))
+ }
+}
+
+# htmlTable Styling ------------
htmlTable_styling <- function(kable_input,
bootstrap_options = "basic",
full_width = T,
@@ -51,7 +80,7 @@
}
if (!is.null(font_size)) {
kable_xml_style <- c(kable_xml_style,
- paste0("font-size: ", font_size, "px;"))
+ paste0("font-size: ", font_size, "px;"))
}
if (!full_width) {
kable_xml_style <- c(kable_xml_style, "width: auto !important;")
@@ -60,11 +89,11 @@
float <- match.arg(float)
if (float == "center") {
kable_xml_style <- c(kable_xml_style,
- "margin-left:auto; margin-right:auto;")
+ "margin-left:auto; margin-right:auto;")
}
if (float == "right") {
kable_xml_style <- c(kable_xml_style,
- "float: right;")
+ "float: right;")
}
if (length(kable_xml_style) != 0) {
xml_attr(kable_xml, "style") <- paste(kable_xml_style, collapse = " ")
@@ -72,3 +101,13 @@
return(structure(as.character(kable_xml), format = "html",
class = "knitr_kable"))
}
+
+# LaTeX table style
+pdfTable_styling <- function(kable_input,
+ full_width = T,
+ float = c("center", "left", "right"),
+ font_size = NULL,
+ latex_hold_position = F,
+ latex_scale_down = F) {
+
+}
diff --git a/R/util.R b/R/util.R
index 9c29ddb..9023f4b 100644
--- a/R/util.R
+++ b/R/util.R
@@ -8,13 +8,25 @@
rmd_format <- function(){
rmd_output_metadata <- metadata$output
- rmd_fmt <- ifelse(
- is.null(rmd_output_metadata),
- "markdown", ifelse(
- rmd_output_metadata %in% c("html_document", "rmarkdown::html_vignette"),
- "html",ifelse(
- rmd_output_metadata %in% c("pdf_document", "rmarkdown::tufte_handout"),
- "latex", "markdown"
- )))
- return(rmd_fmt)
+ # rmd_fmt <- ifelse(
+ # is.null(rmd_output_metadata),
+ # "markdown", ifelse(
+ # rmd_output_metadata %in% c("html_document", "rmarkdown::html_vignette"),
+ # "html",ifelse(
+ # rmd_output_metadata %in% c("pdf_document", "rmarkdown::tufte_handout"),
+ # "latex", "markdown"
+ # )))
+ return(names(rmd_output_metadata))
+}
+
+#' Load a LaTeX package
+#'
+#' @description Load a LaTeX package using R code. Just like `\\usepackage{}`
+#' in LaTeX
+#'
+#' @param name The LaTeX package name
+#' @param options The LaTeX options for the package
+#' @export
+usepackage_latex <- function(name, options = NULL) {
+ invisible(knit_meta_add(list(latex_dependency(name, options))))
}
diff --git a/R/zzz.R b/R/zzz.R
new file mode 100644
index 0000000..fe9dd91
--- /dev/null
+++ b/R/zzz.R
@@ -0,0 +1,5 @@
+.onLoad <- function(libname = find.package("kableExtra"), pkgname = "kableExtra") {
+ usepackage_latex("booktabs")
+ usepackage_latex("longtable")
+ message("LaTeX package booktabs and longtable will be loaded by default.")
+}