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https://github.com/uutils/coreutils
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Merge pull request #5955 from tertsdiepraam/printf-pad-octal-prefix
`printf`: pad unsigned numbers properly
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commit
da139c9524
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@ -140,43 +140,25 @@ impl Formatter for UnsignedInt {
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fn fmt(&self, mut writer: impl Write, x: Self::Input) -> std::io::Result<()> {
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let mut s = match self.variant {
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UnsignedIntVariant::Decimal => format!("{x}"),
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UnsignedIntVariant::Octal(Prefix::No) => format!("{x:o}"),
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UnsignedIntVariant::Octal(Prefix::Yes) => {
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// The prefix that rust uses is `0o`, but GNU uses `0`.
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// We also need to take into account that 0 should not be 00
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// Since this is an unsigned int, we do not need to take the minus
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// sign into account.
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if x == 0 {
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format!("{x:o}")
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} else {
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format!("0{x:o}")
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}
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}
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UnsignedIntVariant::Hexadecimal(Case::Lowercase, Prefix::No) => {
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UnsignedIntVariant::Octal(_) => format!("{x:o}"),
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UnsignedIntVariant::Hexadecimal(Case::Lowercase, _) => {
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format!("{x:x}")
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}
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UnsignedIntVariant::Hexadecimal(Case::Lowercase, Prefix::Yes) => {
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if x == 0 {
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"0".to_string()
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} else {
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format!("{x:#x}")
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}
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}
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UnsignedIntVariant::Hexadecimal(Case::Uppercase, Prefix::No) => {
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UnsignedIntVariant::Hexadecimal(Case::Uppercase, _) => {
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format!("{x:X}")
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}
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UnsignedIntVariant::Hexadecimal(Case::Uppercase, Prefix::Yes) => {
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if x == 0 {
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"0".to_string()
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} else {
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format!("{x:#X}")
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}
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}
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};
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if self.precision > s.len() {
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s = format!("{:0width$}", s, width = self.precision);
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}
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// Zeroes do not get a prefix. An octal value does also not get a
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// prefix if the padded value will not start with a zero.
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let prefix = match (x, self.variant) {
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(1.., UnsignedIntVariant::Hexadecimal(Case::Lowercase, Prefix::Yes)) => "0x",
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(1.., UnsignedIntVariant::Hexadecimal(Case::Uppercase, Prefix::Yes)) => "0X",
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(1.., UnsignedIntVariant::Octal(Prefix::Yes)) if s.len() >= self.precision => "0",
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_ => "",
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};
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s = format!("{prefix}{s:0>width$}", width = self.precision);
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match self.alignment {
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NumberAlignment::Left => write!(writer, "{s:<width$}", width = self.width),
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@ -668,7 +668,7 @@ fn sub_alternative_upper_hex() {
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new_ucmd!()
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.args(&["%#X", "42"])
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.succeeds()
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.stdout_only("0x2A");
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.stdout_only("0X2A");
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}
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#[test]
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@ -680,3 +680,59 @@ fn char_as_byte() {
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fn no_infinite_loop() {
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new_ucmd!().args(&["a", "b"]).succeeds().stdout_only("a");
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}
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#[test]
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fn pad_octal_with_prefix() {
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new_ucmd!()
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.args(&[">%#15.6o<", "0"])
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.succeeds()
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.stdout_only("> 000000<");
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new_ucmd!()
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.args(&[">%#15.6o<", "01"])
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.succeeds()
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.stdout_only("> 000001<");
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new_ucmd!()
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.args(&[">%#15.6o<", "01234"])
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.succeeds()
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.stdout_only("> 001234<");
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new_ucmd!()
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.args(&[">%#15.6o<", "012345"])
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.succeeds()
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.stdout_only("> 012345<");
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new_ucmd!()
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.args(&[">%#15.6o<", "0123456"])
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.succeeds()
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.stdout_only("> 0123456<");
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}
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#[test]
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fn pad_unsigned_zeroes() {
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for format in ["%.3u", "%.3x", "%.3X", "%.3o"] {
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new_ucmd!()
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.args(&[format, "0"])
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.succeeds()
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.stdout_only("000");
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}
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}
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#[test]
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fn pad_unsigned_three() {
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for (format, expected) in [
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("%.3u", "003"),
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("%.3x", "003"),
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("%.3X", "003"),
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("%.3o", "003"),
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("%#.3x", "0x003"),
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("%#.3X", "0X003"),
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("%#.3o", "003"),
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] {
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new_ucmd!()
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.args(&[format, "3"])
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.succeeds()
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.stdout_only(expected);
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}
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}
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