displayCode

From R.utils v1.7.0 by Henrik Bengtsson

Displays the contents of a text file with line numbers and more

Displays the contents of a text file with line numbers and more.

Keywords: file, IO

Usage

## S3 method for class 'default':
displayCode(con=NULL, code=NULL, numerate=TRUE, lines=-1, wrap=79, highlight=NULL, pager=getOption("pager"), ...)

Arguments

con: A connection or a character string filename. If code is specified, this argument is ignored.
code: A character vector of code lines to be displayed.
numerate: If TRUE, line are numbers, otherwise not.
lines: If a single numeric, the maximum number of lines to show. If -1, all lines are shown. If a vector of nu
wrap: The (output) column numeric where to wrap lines.
highlight: A vector of line number to be highlighted.
pager: If "none", code is not displayed in a pager, but only returned. For other options, see file.show().
...: Additional arguments passed to file.show(), which is used to display the formatted code.

Value

Returns (invisibly) the formatted code as a character string.

Examples

file <- system.file("DESCRIPTION", package="R.utils")
cat("Displaying: ", file, ":
", sep="")
displayCode(file)

file <- system.file("NEWS", package="R.utils")
cat("Displaying: ", file, ":
", sep="")
displayCode(file, numerate=FALSE, lines=100:110, wrap=65)

file <- system.file("NEWS", package="R.utils")
cat("Displaying: ", file, ":
", sep="")
displayCode(file, lines=100:110, wrap=65, highlight=c(101,104:108))

Documentation reproduced from package R.utils, version 1.7.0, License: LGPL (>= 2.1)

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