###-*- R -*-

## this will break if R is on a network share
.Library <- file.path(chartr("\\", "/", R.home()), "library")

.Library.site <- Sys.getenv("R_LIBS_SITE")
if (!nzchar(.Library.site)) {
    .Library.site <- .expand_R_libs_env_var('%S')
    Sys.setenv(R_LIBS_SITE = .Library.site)
}
.Library.site <-
    if(.Library.site == "NULL") character() else unlist(strsplit(.Library.site, ";"))
.Library.site <- .Library.site[file.exists(.Library.site)]    
    
local({
    libs <- Sys.getenv("R_LIBS_USER")
    if (!nzchar(libs)) {
        libs <- .expand_R_libs_env_var('%U')
        Sys.setenv(R_LIBS_USER = libs)
    }
    libs <- if(libs == "NULL") character() else unlist(strsplit(libs, ";"))
    invisible(.libPaths(c(unlist(strsplit(Sys.getenv("R_LIBS"), ";")),
                          libs)))
})

local({
    popath <- Sys.getenv("R_TRANSLATIONS", "")
    if(!nzchar(popath)) {
        paths <- file.path(.libPaths(), "translations", "DESCRIPTION")
        popath <- dirname(paths[file.exists(paths)][1])
    }
    bindtextdomain("R", popath)
    bindtextdomain("R-base", popath)
    bindtextdomain("RGui", popath)
    assign(".popath", popath, .BaseNamespaceEnv)
})

if(nzchar(Sys.getenv("R_PAPERSIZE"))) {
    options(papersize = Sys.getenv("R_PAPERSIZE"))
} else {
    if(grepl("(canada|united.states)", Sys.getlocale("LC_MONETARY"),
             ignore.case = TRUE)) options(papersize = "letter")
    else options(papersize = "a4")
}

options(pager = if(length(grep("--ess", commandArgs()))) "console" else "internal",
        useFancyQuotes = (.Platform$GUI == "Rgui"),
        pdfviewer = Sys.getenv("R_PDFVIEWER", file.path(R.home("bin"), "open.exe")))

if(.Platform$GUI == "Rgui")
    Sys.setenv(GFORTRAN_STDOUT_UNIT = "-1", GFORTRAN_STDERR_UNIT = "-1")

local({
    br <- Sys.getenv("R_BROWSER", NA_character_)
    if(!is.na(br)) options(browser = br)
    tests_startup <- Sys.getenv("R_TESTS")
    if(nzchar(tests_startup)) source(tests_startup)
    ca_cert <- Sys.getenv("CURL_CA_BUNDLE", NA_character_)
    if(is.na(ca_cert) &&
       file.exists(ca_path <- file.path(R.home("etc"), "curl-ca-bundle.crt")))
        Sys.setenv(CURL_CA_BUNDLE = ca_path)
})

local({
    # keep in step with Rcmd_environ
    setRtools43Path <- 0
    # INSTALLER-BUILD: setRtools43Path <- 1

    if (setRtools43Path) {
        aarch64 <- FALSE
        # INSTALLER-BUILD-aarch64: aarch64 <- TRUE

        if (aarch64) {
            rthome <- Sys.getenv("RTOOLS43_AARCH64_HOME",
                                 "c:/rtools43-aarch64")
            rtpath <- paste0(rthome, "/aarch64-w64-mingw32.static.posix/bin;",
                             rthome, "/usr/bin")
        } else {
            rthome <- Sys.getenv("RTOOLS43_HOME", "c:/rtools43")
            rtpath <- paste0(rthome, "/x86_64-w64-mingw32.static.posix/bin;",
                             rthome, "/usr/bin")
        }
        path <- Sys.getenv("R_CUSTOM_TOOLS_PATH", rtpath)
        Sys.setenv(R_RTOOLS43_PATH = rtpath)
        Sys.setenv(PATH = paste0(path, ";", Sys.getenv("PATH")))
    }
})