Category talk:Wren-str: Difference between revisions
→Source code: Added Str.bisect and also made some changes to the Greek class.
(→Source code: Multiple bug fixes.) |
(→Source code: Added Str.bisect and also made some changes to the Greek class.) |
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Line 469:
return split.where { |e| !e.isEmpty }.toList
}
// Splits a string 's' into two parts, before and after the first occurrence
// of 'delim' and returns a list of those parts.
// The 'delim' itself can be optionally included in the second part.
// If 'delim' does not occur in 's', returns [s, ""].
static bisect(s, delim, include) {
if (!(delim is String)) Fiber.abort("Delimiter must be a string.")
if (!(include is Bool)) Fiber.abort("Include must be true or false.")
if (!(s is String)) s = "%(s)"
var ix = s.indexOf(delim)
if (ix == -1) return [s, ""]
if (include) return [s[0...ix], s[ix..-1]]
var len = delim.bytes.count
return [s[0...ix], s[ix + len..-1]]
}
// Convenience version of bisect method which never includes the delimiter.
static bisect(s, delim) { bisect(s, delim, false) }
// Creates and returns a string from a list of bytes.
Line 646 ⟶ 664:
*/
class Greek {
// Returns the Greek alphabet, lower then upper case characters.
static alphabet { "αβγδεζηθικλμνξοπρςστυφχψωΑΒΓΔΕΖΗΘΙΚΛΜΝΞΟΠΡ\u03a2ΣΤΥΦΧΨΩ" }
// Returns a list of the names of all Greek letters in alphabetical order.
static names {
Line 653 ⟶ 674:
"rho", "sigma final", "sigma", "tau", "upsilon", "phi", "chi", "psi", "omega"
]
}
// Returns the name of a Greek character or null if not found.
// Upper case characters are returned with the initial letter capitalized.
static name(char) {
if (char.count != 1) return null
var ix = alphabet.toList.indexOf(char)
if (ix == -1) return null
if (ix < 25) return names[ix]
return Str.capitalize(names[ix-25])
}
// Finds and returns a Greek lower case character from its name.
static lower(name) {
name = Str.lower(name)
var ix = names.indexOf(name)
if (ix == -1) Fiber.abort("Name not found.")
Line 664 ⟶ 696:
// Finds and returns a Greek upper case character from its name.
static upper(name) {
name = Str.lower(name)
var ix = names.indexOf(name)
if (ix == -1) Fiber.abort("Name not found.")
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