`rvest:::html_table.xml_node` encoding issue

html_table.R

html_table.xml_node <- function(x, header = NA, trim = TRUE,
                                fill = FALSE, dec = ".") {
  
  stopifnot(html_name(x) == "table")
  
  # Throw error if any rowspan/colspan present
  rows <- html_nodes(x, "tr")
  n <- length(rows)
  cells <- lapply(rows, "html_nodes", xpath = ".//td|.//th")
  
  ncols <- lapply(cells, html_attr, "colspan", default = "1")
  ncols <- lapply(ncols, as.integer)
  nrows <- lapply(cells, html_attr, "rowspan", default = "1")
  nrows <- lapply(nrows, as.integer)
  
  p <- unique(vapply(ncols, sum, integer(1)))
  maxp <- max(p)
  
  if (length(p) > 1 & maxp * n != sum(unlist(nrows)) &
      maxp * n != sum(unlist(ncols))) {
    # then malformed table is not parsable by smart filling solution
    if (!fill) { # fill must then be specified to allow filling with NAs
      stop("Table has inconsistent number of columns. ",
           "Do you want fill = TRUE?", call. = FALSE)
    }
  }
  
  values <- lapply(cells, html_text, trim = trim)
  out <- matrix(NA_character_, nrow = n, ncol = maxp)
  
  # fill colspans right with repetition
  for (i in seq_len(n)) {
    row <- values[[i]]
    ncol <- ncols[[i]]
    col <- 1
    for (j in seq_len(length(ncol))) {
      out[i, col:(col+ncol[j]-1)] <- row[[j]]
      col <- col + ncol[j]
    }
  }
  
  # fill rowspans down with repetition
  for (i in seq_len(maxp)) {
    for (j in seq_len(n)) {
      rowspan <- nrows[[j]][i]; colspan <- ncols[[j]][i]
      if (!is.na(rowspan) & (rowspan > 1)) {
        if (!is.na(colspan) & (colspan > 1)) {
          # special case of colspan and rowspan in same cell
          nrows[[j]] <- c(head(nrows[[j]], i),
                          rep(rowspan, colspan-1),
                          tail(nrows[[j]], length(rowspan)-(i+1)))
          rowspan <- nrows[[j]][i]
        }
        for (k in seq_len(rowspan - 1)) {
          l <- head(out[j+k, ], i-1)
          r <- tail(out[j+k, ], maxp-i+1)
          out[j + k, ] <- head(c(l, out[j, i], r), maxp)
        }
      }
    }
  }
  
  if (is.na(header)) {
    header <- all(html_name(cells[[1]]) == "th")
  }
  if (header) {
    col_names <- out[1, , drop = FALSE]
    out <- out[-1, , drop = FALSE]
  } else {
    col_names <- paste0("X", seq_len(ncol(out)))
  }
  
  Encoding(out) <- "UTF-8"
  locale_original <- Sys.getlocale(category="LC_CTYPE")
  Sys.setlocale(category="LC_CTYPE", locale='C')
  # Convert matrix to list to data frame
  df <- lapply(seq_len(maxp), function(i) {
    utils::type.convert(out[, i], as.is = TRUE, dec = dec)
  })
  Sys.setlocale(category="LC_CTYPE", locale=locale_original)
  
  Encoding(col_names) <- "UTF-8"
  names(df) <- col_names
  class(df) <- "data.frame"
  attr(df, "row.names") <- .set_row_names(length(df[[1]]))
  
  if (length(unique(col_names)) < length(col_names)) {
    warning('At least two columns have the same name')
  }
  
  df
}