Utility functions to help ensure that Chadwick is set up correctly.
The easiest way for the Chadwick CLI
tools to work on *nix systems is to
set the LD_LIBRARY_PATH environment variable. Unfortunately this environment
variable is not set by default during the Chadwick installation.
chadwick_ld_library_path() checks to find the Chadwick shared libraries, and then
set the LD_LIBRARY_PATH environment variable.
If chadwick_ld_library_path() returns TRUE, the cwevent command line program
that retrosheet_data
depends on should work.
The other functions documented here are mostly for internal use.
Usage
chadwick_path()
chadwick_is_installed()
chadwick_find_lib()
chadwick_set_ld_library_path()
chadwick_ld_library_path()Value
If Chadwick is not installed NULL. If Chadwick is installed, the path to the cwevent binary.
TRUE or FALSE
Path to the Chadwick shared library.
Examples
chadwick_path()
#> cwevent is not installed. Please see https://github.com/chadwickbureau/chadwick/releases for installation instructions.
chadwick_is_installed()
#> cwevent is not installed. Please see https://github.com/chadwickbureau/chadwick/releases for installation instructions.
#> [1] FALSE
chadwick_find_lib()
#> cwevent is not installed. Please see https://github.com/chadwickbureau/chadwick/releases for installation instructions.
if (FALSE) {
if (chadwick_ld_library_path()) {
retrosheet_data(tempdir())
}
}