Added add_indent_html;
Added group_rows_html;
diff --git a/R/group_rows.R b/R/group_rows.R
new file mode 100644
index 0000000..9827811
--- /dev/null
+++ b/R/group_rows.R
@@ -0,0 +1,51 @@
+#' Put a few rows of a table into one category
+#'
+#' @export
+group_rows <- function(kable_input, group_label, start_row, end_row) {
+ kable_format <- attr(kable_input, "format")
+ if (!kable_format %in% c("html", "latex")) {
+ message("Currently generic markdown table using pandoc is not supported.")
+ return(kable_input)
+ }
+ if (kable_format == "html") {
+ return(group_rows_html(kable_input, group_label, start_row, end_row))
+ }
+ if (kable_format == "latex") {
+ return(group_rows_latex(kable_input, group_label, start_row, end_row))
+ }
+}
+
+group_rows_html <- function(kable_input, group_label, start_row, end_row) {
+ if (!is.numeric(c(start_row, end_row))) {
+ stop("Start_row and end_row must be numeric position of rows (excluding",
+ "header rows and other group-title rows). ")
+ }
+ kable_attrs <- attributes(kable_input)
+ kable_xml <- read_xml(as.character(kable_input), options = "COMPACT")
+ kable_tbody <- xml_tpart(kable_xml, "tbody")
+
+ group_header_rows <- attr(kable_input, "group_header_rows")
+ group_seq <- seq(start_row, end_row)
+ if (!is.null(group_header_rows)) {
+ group_seq <- positions_corrector(group_seq, group_header_rows,
+ length(xml_children(kable_tbody)))
+ }
+
+ # Insert a group header row
+ starting_node <- xml_child(kable_tbody, group_seq[1])
+ kable_ncol <- length(xml_children(starting_node))
+ group_header_row_text <- paste0(
+ '<tr groupLength="', length(group_seq), '"><td colspan="',
+ kable_ncol, '"><strong>', group_label, "</strong></td></tr>"
+ )
+ group_header_row <- read_xml(group_header_row_text, options = "COMPACT")
+ xml_add_sibling(starting_node, group_header_row, .where = "before")
+
+ # add indentations to items
+ out <- structure(as.character(kable_xml), format = "html",
+ class = "knitr_kable")
+ attributes(out) <- kable_attrs
+ attr(out, "group_header_rows") <- c(attr(out, "group_header_rows"), group_seq[1])
+ out <- add_indent(out, positions = seq(start_row, end_row))
+ return(out)
+}