[Rd] bug report: writeForeignSAS in package "foreign" (PR#13423)

[ken_kleinman at hms.harvard.edu]

function (df, datafile, codefile, dataname = "rdata", validvarname = c("V7",
    "V6"))
{
    factors <- sapply(df, is.factor)
    strings <- sapply(df, is.character)
    dates <- sapply(df, FUN = function(x) inherits(x, "Date") ||
        inherits(x, "dates") || inherits(x, "date"))
    xdates <- sapply(df, FUN = function(x) inherits(x, "dates") ||
        inherits(x, "date"))
    datetimes <- sapply(df, FUN = function(x) inherits(x, "POSIXt"))
    varlabels <- names(df)
    varnames <- make.SAS.names(names(df), validvarname = validvarname)
    if (any(varnames != varlabels))
        message("Some variable names were abbreviated or otherwise altered.")
    dfn <- df
    if (any(factors))
        dfn[factors] <- lapply(dfn[factors], as.numeric)write
    if (any(datetimes))
        dfn[datetimes] <- lapply(dfn[datetimes], function(x) format(x,
            "%d%b%Y %H:%M:%S"))
    if (any(xdates))
        dfn[xdates] <- lapply(dfn[xdates], function(x) as.Date(as.POSIXct(x)))
    write.table(dfn, file = datafile, row = FALSE, col = FALSE,
        sep = ",", quote = TRUE, na = "")
    lrecl <- max(sapply(readLines(datafile), nchar)) + 4L
    cat("* Written by R;\n", file = codefile)
    cat("* ", deparse(sys.call(-2L))[1L], ";\n\n", file = codefile,
        append = TRUE)
    if (any(factors)) {
        cat("PROC FORMAT;\n", file = codefile, append = TRUE)
        fmtnames <- make.SAS.formats(varnames[factors])
        fmt.values <- lapply(df[, factors, drop = FALSE], levels)
        names(fmt.values) <- fmtnames
        for (f in fmtnames) {
            cat("value", f, "\n", file = codefile, append = TRUE)
            values <- fmt.values[[f]]
            for (i in 1L:length(values)) {
                cat("    ", i, "=", adQuote(values[i]), "\n",
                  file = codefile, append = TRUE)
            }
            cat(";\n\n", file = codefile, append = TRUE)
        }
    }
    cat("DATA ", dataname, ";\n", file = codefile, append = TRUE)
    if (any(strings)) {
        cat("LENGTH", file = codefile, append = TRUE)
        lengths <- sapply(df[, strings, drop = FALSE], FUN =
function(x) max(nchar(x)))
        names(lengths) <- varnames[strings]
        for (v in varnames[strings]) cat("\n", v, "$", lengths[v],
            file = codefile, append = TRUE)
        cat("\n;\n\n", file = codefile, append = TRUE)
    }
    if (any(dates)) {
        cat("INFORMAT", file = codefile, append = TRUE)
        for (v in varnames[dates]) cat("\n", v, file = codefile,
            append = TRUE)
        cat("\n YYMMDD10.\n;\n\n", file = codefile, append = TRUE)
    }
    if (any(datetimes)) {
        cat("INFORMAT", file = codefile, append = TRUE)
        for (v in varnames[datetimes]) cat("\n", v, file = codefile,
            append = TRUE)
        cat("\n DATETIME18.\n;\n\n", file = codefile, append = TRUE)
    }
    cat("INFILE ", adQuote(datafile), "\n     DSD", "\n     LRECL=",
        lrecl, ";\n", file = codefile, append = TRUE)
    cat("INPUT", file = codefile, append = TRUE)
    for (v in 1L:ncol(df)) cat("\n", varnames[v], file = codefile,
        append = TRUE)
    if (strings[v])
        cat(" $ ", file = codefile, append = TRUE)
    cat("\n;\n", file = codefile, append = TRUE)
    for (v in 1L:ncol(df)) if (varnames[v] != names(varnames)[v])
        cat("LABEL ", varnames[v], "=", adQuote(varlabels[v]),
            ";\n", file = codefile, append = TRUE)
    if (any(factors))
        for (f in 1L:length(fmtnames)) cat("FORMAT", names(fmtnames)[f],
            paste(fmtnames[f], ".", sep = ""), ";\n", file = codefile,
            append = TRUE)
    if (any(dates))
        for (v in varnames[dates]) cat("FORMAT", v, "yymmdd10.;\n",
            file = codefile, append = TRUE)
    if (any(datetimes))
        for (v in varnames[datetimes]) cat("FORMAT", v, "datetime18.;\n",
            file = codefile, append = TRUE)
    cat("RUN;\n", file = codefile, append = TRUE)
}

-- 
___________________________
Ken Kleinman, ScD
Associate Professor, Department of Ambulatory Care and Prevention
Harvard Medical School and Harvard Pilgrim Health Care
133 Brookline Ave., 6th Floor
Boston, MA 02215
p: 617 509 9935
f: 617 859 8112
https://dacppages.pbwiki.com/Ken%20Kleinman


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