inst/doc/document-manipulation.R

In rstudioapi: Safely Access the RStudio API

## ----setup--------------------------------------------------------------------
knitr::opts_chunk$set(eval = FALSE)

## -----------------------------------------------------------------------------
# # construct the text to be inserted
# fmt <- "# This document was last modified on %s.\n"
# text <- sprintf(fmt, Sys.Date())
# 
# # specify a range where this text should be inserted; here,
# # we use the first line; that is, the 'range' between the start
# # of the first row, and the start of the second row
# range <- rstudioapi::document_range(c(1, 0), c(2, 0))
# rstudioapi::insertText(range, text)

## -----------------------------------------------------------------------------
# # get console editor id
# context <- rstudioapi::getConsoleEditorContext()
# id <- context$id
# 
# # send some R code to the console
# rstudioapi::insertText(text = "print(1 + 1)", id = id)
# 
# # see also: `getActiveEditorContext()`, `getSourceEditorContext()`

## -----------------------------------------------------------------------------
# # put the cursor at the end of the document -- note that here,
# # `Inf` is automatically truncated to the actual length of the
# # document
# rstudioapi::setCursorPosition(Inf)
# 
# # select the first 10 even lines in the document
# ranges <- lapply(seq(2, by = 2, length.out = 10), function(start) {
#   rstudioapi::document_range(
#     c(start, 0),
#     c(start, Inf)
#   )
# })
# rstudioapi::setSelectionRanges(ranges)