TheXamlGuy
419 lines
13 KiB
C#
419 lines
13 KiB
C#
namespace Toolkit.UI.Controls.Avalonia;
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internal class PersonPictureInitialsGenerator
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{
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public static PersonPictureCharacterType GetCharacterType(string content)
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{
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PersonPictureCharacterType result = PersonPictureCharacterType.Other;
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if (content is { Length: > 0 })
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{
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for (int i = 0; i < 3; i++)
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{
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if ((i >= content.Length) || (content[i] == '\0') || (content[i] == 0xFEFF))
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{
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break;
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}
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char character = content[i];
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PersonPictureCharacterType evaluationResult = GetCharacterType(character);
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switch (evaluationResult)
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{
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case PersonPictureCharacterType.Glyph:
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result = PersonPictureCharacterType.Glyph;
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break;
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case PersonPictureCharacterType.Symbolic:
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if (result != PersonPictureCharacterType.Glyph)
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{
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result = PersonPictureCharacterType.Symbolic;
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}
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break;
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case PersonPictureCharacterType.Standard:
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if ((result != PersonPictureCharacterType.Glyph) && (result != PersonPictureCharacterType.Symbolic))
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{
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result = PersonPictureCharacterType.Standard;
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}
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break;
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default:
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break;
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}
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}
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}
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return result;
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}
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public static PersonPictureCharacterType GetCharacterType(char character)
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{
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// IPA Extensions
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if ((character >= 0x0250) && (character <= 0x02AF))
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{
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return PersonPictureCharacterType.Glyph;
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}
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// Arabic
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if ((character >= 0x0600) && (character <= 0x06FF))
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{
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return PersonPictureCharacterType.Glyph;
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}
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// Arabic Supplement
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if ((character >= 0x0750) && (character <= 0x077F))
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{
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return PersonPictureCharacterType.Glyph;
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}
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// Arabic Extended-A
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if ((character >= 0x08A0) && (character <= 0x08FF))
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{
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return PersonPictureCharacterType.Glyph;
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}
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// Arabic Presentation Forms-A
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if ((character >= 0xFB50) && (character <= 0xFDFF))
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{
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return PersonPictureCharacterType.Glyph;
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}
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// Arabic Presentation Forms-B
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if ((character >= 0xFE70) && (character <= 0xFEFF))
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{
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return PersonPictureCharacterType.Glyph;
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}
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// Devanagari
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if ((character >= 0x0900) && (character <= 0x097F))
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{
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return PersonPictureCharacterType.Glyph;
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}
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// Devanagari Extended
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if ((character >= 0xA8E0) && (character <= 0xA8FF))
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{
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return PersonPictureCharacterType.Glyph;
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}
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// Bengali
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if ((character >= 0x0980) && (character <= 0x09FF))
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{
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return PersonPictureCharacterType.Glyph;
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}
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// Gurmukhi
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if ((character >= 0x0A00) && (character <= 0x0A7F))
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{
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return PersonPictureCharacterType.Glyph;
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}
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// Gujarati
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if ((character >= 0x0A80) && (character <= 0x0AFF))
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{
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return PersonPictureCharacterType.Glyph;
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}
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// Oriya
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if ((character >= 0x0B00) && (character <= 0x0B7F))
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{
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return PersonPictureCharacterType.Glyph;
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}
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// Tamil
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if ((character >= 0x0B80) && (character <= 0x0BFF))
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{
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return PersonPictureCharacterType.Glyph;
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}
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// Telugu
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if ((character >= 0x0C00) && (character <= 0x0C7F))
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{
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return PersonPictureCharacterType.Glyph;
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}
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// Kannada
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if ((character >= 0x0C80) && (character <= 0x0CFF))
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{
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return PersonPictureCharacterType.Glyph;
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}
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// Malayalam
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if ((character >= 0x0D00) && (character <= 0x0D7F))
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{
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return PersonPictureCharacterType.Glyph;
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}
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// Sinhala
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if ((character >= 0x0D80) && (character <= 0x0DFF))
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{
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return PersonPictureCharacterType.Glyph;
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}
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// Thai
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if ((character >= 0x0E00) && (character <= 0x0E7F))
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{
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return PersonPictureCharacterType.Glyph;
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}
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// Lao
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if ((character >= 0x0E80) && (character <= 0x0EFF))
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{
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return PersonPictureCharacterType.Glyph;
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}
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// SYMBOLIC
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//
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// CJK Unified Ideographs
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if ((character >= 0x4E00) && (character <= 0x9FFF))
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{
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return PersonPictureCharacterType.Symbolic;
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}
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// CJK Unified Ideographs Extension
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if ((character >= 0x3400) && (character <= 0x4DBF))
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{
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return PersonPictureCharacterType.Symbolic;
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}
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// CJK Unified Ideographs Extension B
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if ((character >= 0x20000) && (character <= 0x2A6DF))
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{
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return PersonPictureCharacterType.Symbolic;
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}
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// CJK Unified Ideographs Extension C
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if ((character >= 0x2A700) && (character <= 0x2B73F))
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{
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return PersonPictureCharacterType.Symbolic;
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}
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// CJK Unified Ideographs Extension D
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if ((character >= 0x2B740) && (character <= 0x2B81F))
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{
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return PersonPictureCharacterType.Symbolic;
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}
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// CJK Radicals Supplement
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if ((character >= 0x2E80) && (character <= 0x2EFF))
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{
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return PersonPictureCharacterType.Symbolic;
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}
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// CJK Symbols and Punctuation
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if ((character >= 0x3000) && (character <= 0x303F))
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{
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return PersonPictureCharacterType.Symbolic;
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}
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// CJK Strokes
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if ((character >= 0x31C0) && (character <= 0x31EF))
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{
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return PersonPictureCharacterType.Symbolic;
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}
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// Enclosed CJK Letters and Months
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if ((character >= 0x3200) && (character <= 0x32FF))
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{
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return PersonPictureCharacterType.Symbolic;
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}
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// CJK Compatibility
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if ((character >= 0x3300) && (character <= 0x33FF))
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{
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return PersonPictureCharacterType.Symbolic;
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}
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// CJK Compatibility Ideographs
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if ((character >= 0xF900) && (character <= 0xFAFF))
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{
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return PersonPictureCharacterType.Symbolic;
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}
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// CJK Compatibility Forms
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if ((character >= 0xFE30) && (character <= 0xFE4F))
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{
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return PersonPictureCharacterType.Symbolic;
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}
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// CJK Compatibility Ideographs Supplement
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if ((character >= 0x2F800) && (character <= 0x2FA1F))
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{
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return PersonPictureCharacterType.Symbolic;
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}
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// Greek and Coptic
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if ((character >= 0x0370) && (character <= 0x03FF))
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{
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return PersonPictureCharacterType.Symbolic;
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}
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// Hebrew
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if ((character >= 0x0590) && (character <= 0x05FF))
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{
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return PersonPictureCharacterType.Symbolic;
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}
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// Armenian
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if ((character >= 0x0530) && (character <= 0x058F))
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{
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return PersonPictureCharacterType.Symbolic;
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}
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// LATIN
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//
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// Basic Latin
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if ((character > 0x0000) && (character <= 0x007F))
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{
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return PersonPictureCharacterType.Standard;
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}
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// Latin-1 Supplement
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if ((character >= 0x0080) && (character <= 0x00FF))
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{
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return PersonPictureCharacterType.Standard;
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}
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// Latin Extended-A
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if ((character >= 0x0100) && (character <= 0x017F))
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{
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return PersonPictureCharacterType.Standard;
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}
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// Latin Extended-B
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if ((character >= 0x0180) && (character <= 0x024F))
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{
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return PersonPictureCharacterType.Standard;
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}
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// Latin Extended-C
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if ((character >= 0x2C60) && (character <= 0x2C7F))
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{
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return PersonPictureCharacterType.Standard;
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}
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// Latin Extended-D
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if ((character >= 0xA720) && (character <= 0xA7FF))
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{
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return PersonPictureCharacterType.Standard;
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}
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// Latin Extended-E
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if ((character >= 0xAB30) && (character <= 0xAB6F))
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{
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return PersonPictureCharacterType.Standard;
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}
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// Latin Extended Additional
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if ((character >= 0x1E00) && (character <= 0x1EFF))
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{
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return PersonPictureCharacterType.Standard;
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}
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// Cyrillic
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if ((character >= 0x0400) && (character <= 0x04FF))
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{
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return PersonPictureCharacterType.Standard;
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}
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// Cyrillic Supplement
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if ((character >= 0x0500) && (character <= 0x052F))
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{
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return PersonPictureCharacterType.Standard;
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}
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// Combining Diacritical Marks
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if ((character >= 0x0300) && (character <= 0x036F))
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{
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return PersonPictureCharacterType.Standard;
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}
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return PersonPictureCharacterType.Other;
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}
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public static string InitialsFromDisplayName(string contactDisplayName)
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{
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PersonPictureCharacterType type = GetCharacterType(contactDisplayName);
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if (type == PersonPictureCharacterType.Standard)
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{
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string displayName = contactDisplayName;
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StripTrailingBrackets(ref displayName);
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string[] words = Split(displayName, ' ');
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if (words.Length == 1)
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{
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string firstWord = words.First();
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string result = GetFirstFullCharacter(firstWord);
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return result.ToUpper();
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}
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else if (words.Length > 1)
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{
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string firstWord = words.First();
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string lastWord = words.Last();
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string result = GetFirstFullCharacter(firstWord);
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result += GetFirstFullCharacter(lastWord);
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return result.ToUpper();
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}
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else
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{
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return string.Empty;
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}
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}
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else
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{
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return string.Empty;
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}
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}
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private static string GetFirstFullCharacter(string str)
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{
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int start = 0;
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while (start < str.Length)
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{
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char character = str[start];
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// Omit ! " # $ % & ' ( ) * + , - . /
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if ((character >= 0x0021) && (character <= 0x002F))
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{
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start++;
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continue;
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}
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// Omit : ; < = > ? @
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if ((character >= 0x003A) && (character <= 0x0040))
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{
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start++;
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continue;
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}
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// Omit { | } ~
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if ((character >= 0x007B) && (character <= 0x007E))
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{
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start++;
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continue;
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}
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break;
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}
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if (start >= str.Length)
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{
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start = 0;
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}
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int index = start + 1;
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while (index < str.Length)
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{
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char character = str[index];
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if ((character < 0x0300) || (character > 0x036F))
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{
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break;
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}
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index++;
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}
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int strLength = index - start;
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return SafeSubstring(str, start, strLength);
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}
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private static string SafeSubstring(string value, int startIndex, int length)
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{
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if (value is null)
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{
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throw new ArgumentNullException(nameof(value));
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}
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if (startIndex > value.Length)
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{
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return string.Empty;
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}
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if (length > value.Length - startIndex)
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{
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length = value.Length - startIndex;
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}
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return value.Substring(startIndex, length);
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}
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private static string[] Split(string source, char delim, int maxIterations = 25)
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{
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return source.Split(new[] { delim }, maxIterations);
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}
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private static void StripTrailingBrackets(ref string source)
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{
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string[] delimiters = { "{}", "()", "[]" };
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if (source.Length == 0)
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{
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return;
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}
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foreach (var delimiter in delimiters)
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{
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if (source[source.Length - 1] != delimiter[1])
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{
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continue;
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}
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var start = source.LastIndexOf(delimiter[0]);
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if (start == -1)
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{
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continue;
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}
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source = source.Remove(start);
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return;
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}
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}
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} |