src/tools/RInsideEnvVars.r

In RInside: C++ Classes to Embed R in C++ (and C) Applications

#!/usr/bin/r -q
#
# This owes a lot to littler.R  in the littler sources

ExcludeVars <- c("R_SESSION_TMPDIR", "R_HISTFILE", "R_LIBRARY_DIR", "R_LIBS",
                 "R_PACKAGE_DIR", "R_SESSION_INITIALIZED")
IncludeVars <- Sys.getenv()
IncludeVars <- IncludeVars[grep("^R_",names(IncludeVars),perl=TRUE)]
if (.Platform$OS.type == "windows") {
    IncludeVars <- gsub("\\\\", "/", IncludeVars, perl=TRUE)
    IncludeVars <- gsub("\r", "", IncludeVars, fixed = TRUE)
}
cat("    const char *R_VARS[] = {\n")
for (i in 1:length(IncludeVars)){
    if (names(IncludeVars)[i] %in% ExcludeVars)
        next
    cat('        "',names(IncludeVars)[i],'","',IncludeVars[i],'",\n',sep='')
}
cat("        NULL\n    };\n")