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27 lines
1.5 KiB
Go
27 lines
1.5 KiB
Go
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// Package ctystrings is a collection of string manipulation utilities which
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// intend to help application developers implement string-manipulation
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// functionality in a way that respects the cty model of strings, even when
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// they are working in the realm of Go strings.
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//
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// cty strings are, internally, NFC-normalized as defined in Unicode Standard
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// Annex #15 and encoded as UTF-8.
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//
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// When working with [cty.Value] of string type cty manages this
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// automatically as an implementation detail, but when applications call
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// [Value.AsString] they will receive a value that has been subjected to that
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// normalization, and so may need to take that normalization into account when
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// manipulating the resulting string or comparing it with other Go strings
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// that did not originate in a [cty.Value].
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//
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// Although the core representation of [cty.String] only considers whole
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// strings, it's also conventional in other locations such as the standard
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// library functions to consider strings as being sequences of grapheme
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// clusters as defined by Unicode Standard Annex #29, which adds further
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// rules about combining multiple consecutive codepoints together into a
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// single user-percieved character. Functions that work with substrings should
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// always use grapheme clusters as their smallest unit of splitting strings,
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// and never break strings in the middle of a grapheme cluster. The functions
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// in this package respect that convention unless otherwise stated in their
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// documentation.
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package ctystrings
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