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diff-closures: print sizes with dynamic unit

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Marcel 2025-10-27 00:05:39 +01:00
parent bef3c37cb2
commit 9d4d10954a
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GPG key ID: 446F3B093DF81C6A
5 changed files with 9 additions and 8 deletions
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1
src/libutil-tests/util.cc
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@ -158,6 +158,7 @@ TEST(renderSize, misc)
ASSERT_EQ(renderSize(972, true), " 0.9 KiB");
ASSERT_EQ(renderSize(973, true), " 1.0 KiB"); // FIXME: should round down
ASSERT_EQ(renderSize(1024, true), " 1.0 KiB");
ASSERT_EQ(renderSize(-1024, true), " -1.0 KiB");
ASSERT_EQ(renderSize(1024 * 1024, true), "1024.0 KiB");
ASSERT_EQ(renderSize(1100 * 1024, true), " 1.1 MiB");
ASSERT_EQ(renderSize(2ULL * 1024 * 1024 * 1024, true), " 2.0 GiB");

2
src/libutil/include/nix/util/util.hh
View file

@ -104,7 +104,7 @@ N string2IntWithUnitPrefix(std::string_view s)
* GiB`. If `align` is set, the number will be right-justified by
* padding with spaces on the left.
*/
std::string renderSize(uint64_t value, bool align = false);
std::string renderSize(int64_t value, bool align = false);
/**
* Parse a string into a float.

9
src/libutil/util.cc
View file

@ -132,15 +132,16 @@ std::optional<N> string2Float(const std::string_view s)
template std::optional<double> string2Float<double>(const std::string_view s);
template std::optional<float> string2Float<float>(const std::string_view s);
std::string renderSize(uint64_t value, bool align)
std::string renderSize(int64_t value, bool align)
{
static const std::array<char, 9> prefixes{{'K', 'K', 'M', 'G', 'T', 'P', 'E', 'Z', 'Y'}};
size_t power = 0;
double res = value;
while (res > 1024 && power < prefixes.size()) {
double abs_value = std::abs(value);
while (abs_value > 1024 && power < prefixes.size()) {
++power;
res /= 1024;
abs_value /= 1024;
}
double res = (double) value / std::pow(1024.0, power);
return fmt(align ? "%6.1f %ciB" : "%.1f %ciB", power == 0 ? res / 1024 : res, prefixes.at(power));
}

3
src/nix/diff-closures.cc
View file

@ -107,8 +107,7 @@ void printClosureDiff(
if (!removed.empty() || !added.empty())
items.push_back(fmt("%s → %s", showVersions(removed), showVersions(added)));
if (showDelta)
items.push_back(
fmt("%s%+.1f KiB" ANSI_NORMAL, sizeDelta > 0 ? ANSI_RED : ANSI_GREEN, sizeDelta / 1024.0));
items.push_back(fmt("%s%s" ANSI_NORMAL, sizeDelta > 0 ? ANSI_RED : ANSI_GREEN, renderSize(sizeDelta)));
logger->cout("%s%s: %s", indent, name, concatStringsSep(", ", items));
}
}

2
src/nix/path-info.cc
View file

@ -141,7 +141,7 @@ struct CmdPathInfo : StorePathsCommand, MixJSON
void printSize(std::ostream & str, uint64_t value)
{
if (humanReadable)
str << fmt("\t%s", renderSize(value, true));
str << fmt("\t%s", renderSize((int64_t) value, true));
else
str << fmt("\t%11d", value);
}