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write_excel_csv() and write_excel_csv2() put datetimes in a format… #1463

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7c4a053
`write_excel_csv()` and `write_excel_csv()` put datetimes in a format…
keesdeschepper Jan 22, 2023
e1fc50a
Update NEWS.md
keesdeschepper Jan 22, 2023
b5d1c68
Update NEWS.md
keesdeschepper Jan 23, 2023
0b45527
Merge branch 'main' into excel-csvs-date-format
keesdeschepper Feb 10, 2023
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3 changes: 2 additions & 1 deletion NEWS.md
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Original file line number Diff line number Diff line change
@@ -1,6 +1,7 @@
# readr (development version)

* No user-facing changes. Patch release with internal changes requested by CRAN.
* `write_excel_csv()` and `write_excel_csv2()` put datetimes in a format that is
readable again by `readr` on roundtrips (#1202).

# readr 2.1.3

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4 changes: 2 additions & 2 deletions R/write.R
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Expand Up @@ -193,7 +193,7 @@ write_excel_csv <- function(x, file, na = "NA", append = FALSE,

x_out <- x
datetime_cols <- vapply(x, inherits, logical(1), "POSIXt")
x[datetime_cols] <- lapply(x[datetime_cols], format, "%Y/%m/%d %H:%M:%S")
x[datetime_cols] <- lapply(x[datetime_cols], format, "%Y-%m-%d %H:%M:%S")

x[] <- lapply(x, output_column)
if (edition_first()) {
Expand Down Expand Up @@ -242,7 +242,7 @@ write_excel_csv2 <- function(x, file, na = "NA", append = FALSE,
x <- change_decimal_separator(x, decimal_mark = ",")

datetime_cols <- vapply(x, inherits, logical(1), "POSIXt")
x[datetime_cols] <- lapply(x[datetime_cols], format, "%Y/%m/%d %H:%M:%S")
x[datetime_cols] <- lapply(x[datetime_cols], format, "%Y-%m-%d %H:%M:%S")

x[] <- lapply(x, output_column)
write_excel_csv(x, file, na, append, col_names, delim,
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22 changes: 22 additions & 0 deletions tests/testthat/test-write.R
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Expand Up @@ -103,6 +103,28 @@ test_that("write_excel_csv/csv2 includes a byte order mark, but not when appendi
expect_equal(output[-1:-3], charToRaw('"a"\n1\n2\n'))
})

test_that("write_excel_csv/csv2 preserves datetimes on roundtrip", {
tmp <- tempfile()
on.exit(unlink(tmp))

tmp2 <- tempfile()
on.exit(unlink(tmp2))

x <- as.POSIXct("2010-01-01 00:00:00") + 1:10
attr(x, "tzone") <- "UTC"

input <- data.frame(x = x)

write_excel_csv(input, tmp)
write_excel_csv2(input, tmp2)

output <- read_csv(tmp)
output2 <- read_csv2(tmp2)

expect_equal(output$x, x)
expect_equal(output2$x, x)
})

test_that("does not writes a tailing .0 for whole number doubles", {
expect_equal(format_tsv(tibble::tibble(x = 1)), "x\n1\n")

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