Check 'this.path()' is Functioning Correctly

Add check.path("path/to/file") to the start of your script to initialize this.path() and check that it is returning the expected path.

check.path(...)
check.dir(...)

check.proj(...)

Arguments

...

further arguments passed to path.join() which must return a character string; the path you expect this.path() or this.dir() to return. The specified path can be as deep as necessary (just the basename, the last directory and the basename, the last two directories and the basename, ...), but do not use an absolute path. this.path() makes R scripts portable, but using an absolute path in check.path() or check.dir() makes an R script non-portable, defeating a major purpose of this package.

Details

check.proj() is a specialized version of check.path() that checks the path up to the project root.

Value

if the expected path / / directory matches this.path() / / this.dir(), then TRUE invisibly, otherwise an error is thrown.

Examples

# ## I have a project called 'd_cead'
# ##
# ## Within this project, I have a folder called 'code'
# ## where I place all of my scripts.
# ##
# ## One of these scripts is called 'provrun.R'
# ##
# ## So, at the top of that R script, I could write:
#
#
# @R_PACKAGE_NAME@::check.path("d_cead", "code", "provrun.R")
#
# ## or:
#
# @R_PACKAGE_NAME@::check.path("d_cead/code/provrun.R")