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https://github.com/fish-shell/fish-shell
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f053cd27c6
Glob ordering is used in a variety of places, including figuring out conf.d and really needs to be stable. Other ordering, like completions, is really just cosmetic and can change if it makes for a nicer experience. So we uncouple it by copying the wcsfilecmp from 3.0.2, which will return the ordering to what it was in that release. Fixes #6593
40 lines
1.4 KiB
C++
40 lines
1.4 KiB
C++
// Generic utilities library.
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#ifndef FISH_UTIL_H
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#define FISH_UTIL_H
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/// Compares two wide character strings with an (arguably) intuitive ordering. This function tries
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/// to order strings in a way which is intuitive to humans with regards to sorting strings
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/// containing numbers.
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///
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/// Most sorting functions would sort the strings 'file1.txt' 'file5.txt' and 'file12.txt' as:
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///
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/// file1.txt
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/// file12.txt
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/// file5.txt
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///
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/// This function regards any sequence of digits as a single entity when performing comparisons, so
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/// the output is instead:
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///
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/// file1.txt
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/// file5.txt
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/// file12.txt
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///
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/// Which most people would find more intuitive.
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///
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/// This won't return the optimum results for numbers in bases higher than ten, such as hexadecimal,
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/// but at least a stable sort order will result.
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///
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/// This function performs a two-tiered sort, where difference in case and in number of leading
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/// zeroes in numbers only have effect if no other differences between strings are found. This way,
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/// a 'file1' and 'File1' will not be considered identical, and hence their internal sort order is
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/// not arbitrary, but the names 'file1', 'File2' and 'file3' will still be sorted in the order
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/// given above.
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int wcsfilecmp(const wchar_t *a, const wchar_t *b);
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/// wcsfilecmp, but frozen in time for glob usage.
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int wcsfilecmp_glob(const wchar_t *a, const wchar_t *b);
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/// Get the current time in microseconds since Jan 1, 1970.
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long long get_time();
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#endif
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