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find: Allow unit suffixes to be used with the -size
option
The argument supplied to the `-size` option may now be one of the following suffixes: * b: 512-byte blocks. This is the default unit if no suffix is used. * c: bytes * w: two-byte words * k: kibibytes (1024 bytes) * M: mebibytes (1024 kibibytes) * G: gibibytes (1024 mebibytes) Sizes are rounded to the specified unit before comparison. The unit suffixes are case-sensitive.
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9b884a9605
commit
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2 changed files with 46 additions and 14 deletions
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@ -226,28 +226,51 @@ public:
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SizeCommand(char const* arg)
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{
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StringView view { arg, strlen(arg) };
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if (view.ends_with('c')) {
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m_is_bytes = true;
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auto suffix = view[view.length() - 1];
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if (!is_ascii_digit(suffix)) {
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switch (suffix) {
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case 'c':
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m_unit_size = 1;
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break;
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case 'w':
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m_unit_size = 2;
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break;
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case 'k':
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m_unit_size = KiB;
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break;
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case 'M':
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m_unit_size = MiB;
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break;
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case 'G':
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m_unit_size = GiB;
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break;
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case 'b':
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// The behavior of this suffix is the same as no suffix.
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break;
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default:
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fatal_error("Invalid -size type '{}'", suffix);
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}
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view = view.substring_view(0, view.length() - 1);
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}
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auto number = view.to_uint();
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if (!number.has_value())
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auto number = view.to_uint<u64>();
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if (!number.has_value() || number.value() > AK::NumericLimits<off_t>::max())
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fatal_error("Invalid size: \033[1m{}", arg);
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m_size = number.value();
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m_number_of_units = number.value();
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}
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private:
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virtual bool evaluate(const struct stat& stat) const override
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{
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if (m_is_bytes)
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return stat.st_size == m_size;
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if (m_unit_size == 1)
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return stat.st_size == m_number_of_units;
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auto size_divided_by_512_rounded_up = (stat.st_size + 511) / 512;
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return size_divided_by_512_rounded_up == m_size;
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auto size_divided_by_unit_rounded_up = (stat.st_size + m_unit_size - 1) / m_unit_size;
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return size_divided_by_unit_rounded_up == m_number_of_units;
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}
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off_t m_size { 0 };
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bool m_is_bytes { false };
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off_t m_number_of_units { 0 };
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off_t m_unit_size { 512 };
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};
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class NameCommand : public Command {
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