enum Opal::AsciiCode

Overview

Comprehensive enumeration of standard ASCII (0-127) control and printable codes, alongside Code Page 437 extended terminal UI pieces (arrows, box drawing, blocks, shades, symbols).

This provides a canonical, emoji-free reference for all terminal UI characters.

Defined in:

opal/terminal/ascii.cr

Enum Members

Nul = 0

--- Standard ASCII C0 Control Codes (0-31, 127) ---

StartOfHeading = 1

StartOfText = 2

EndOfText = 3

EndOfTransmit = 4

Enquiry = 5

Acknowledge = 6

Bell = 7

Backspace = 8

Tab = 9

LineFeed = 10

VerticalTab = 11

FormFeed = 12

CarriageReturn = 13

ShiftOut = 14

ShiftIn = 15

DataLinkEscape = 16

DeviceControl1 = 17

DeviceControl2 = 18

DeviceControl3 = 19

DeviceControl4 = 20

NegativeAck = 21

SynchronousIdle = 22

EndOfBlock = 23

Cancel = 24

EndOfMedium = 25

Substitute = 26

Escape = 27

FileSeparator = 28

GroupSeparator = 29

RecordSeparator = 30

UnitSeparator = 31

Delete = 127

Space = 32

--- Standard ASCII Printable Characters (32-126) ---

Exclamation = 33

DoubleQuote = 34

Hash = 35

Dollar = 36

Percent = 37

Ampersand = 38

SingleQuote = 39

ParenOpen = 40

ParenClose = 41

Asterisk = 42

Plus = 43

Comma = 44

Hyphen = 45

Period = 46

Slash = 47

Digit0 = 48

Digits (48-57)

Digit1 = 49

Digit2 = 50

Digit3 = 51

Digit4 = 52

Digit5 = 53

Digit6 = 54

Digit7 = 55

Digit8 = 56

Digit9 = 57

Colon = 58

Semicolon = 59

Less = 60

Equal = 61

Greater = 62

Question = 63

At = 64

BracketOpen = 91

Brackets & Punctuation

Backslash = 92

BracketClose = 93

Caret = 94

Underscore = 95

Backtick = 96

BraceOpen = 123

Pipe = 124

BraceClose = 125

Tilde = 126

SmileyFace = 256

--- Code Page 437 Extended Terminal UI Pieces & Symbols ---

SmileyInverse = 257

Heart = 258

Diamond = 259

Club = 260

Spade = 261

Bullet = 262

InverseBullet = 263

CircleOpen = 264

CircleInverse = 265

MusicalNote = 266

MusicalNotes = 267

Sun = 268

ArrowRightFill = 269

ArrowLeftFill = 270

ArrowUpDown = 271

DoubleExclamation = 272

Paragraph = 273

Section = 274

RectangleFill = 275

ArrowUpDownBase = 276

ArrowUp = 277

ArrowDown = 278

ArrowRight = 279

ArrowLeft = 280

RightAngle = 281

LeftRightArrow = 282

TriangleUp = 283

TriangleDown = 284

LightShade = 285

Box Drawing & Shading Pieces (CP437 176-223)

MediumShade = 286

DarkShade = 287

BoxVertical = 288

BoxRightTee = 289

BoxVerticalDouble = 290

BoxTopRightDouble = 291

BoxBottomRightDouble = 292

BoxTopRight = 293

BoxBottomLeft = 294

BoxBottomTee = 295

BoxTopTee = 296

BoxLeftTee = 297

BoxHorizontal = 298

BoxCross = 299

BoxBottomRight = 300

BoxTopLeft = 301

BoxFullBlock = 302

BoxBottomHalf = 303

BoxLeftHalf = 304

BoxRightHalf = 305

BoxTopHalf = 306

Degree = 307

Mathematical & Miscellaneous Pieces

BulletSmall = 308

SquareRoot = 309

Class Method Summary

• .find?(name : String) : AsciiCode | Nil

  Finds an AsciiCode entry by case-insensitive name or alias

• .from_char?(ch : Char) : AsciiCode | Nil

  Resolves an AsciiCode from a Char

Instance Method Summary

• #acknowledge?

  Returns true if this enum value equals Acknowledge

• #ampersand?

  Returns true if this enum value equals Ampersand

• #arrow_down?

  Returns true if this enum value equals ArrowDown

• #arrow_left?

  Returns true if this enum value equals ArrowLeft

• #arrow_left_fill?

  Returns true if this enum value equals ArrowLeftFill

• #arrow_right?

  Returns true if this enum value equals ArrowRight

• #arrow_right_fill?

  Returns true if this enum value equals ArrowRightFill

• #arrow_up?

  Returns true if this enum value equals ArrowUp

• #arrow_up_down?

  Returns true if this enum value equals ArrowUpDown

• #arrow_up_down_base?

  Returns true if this enum value equals ArrowUpDownBase

• #ascii_fallback : Char

  Returns the strict 7-bit ASCII fallback for terminals with limited font support

• #asterisk?

  Returns true if this enum value equals Asterisk

• #at?

  Returns true if this enum value equals At

• #backslash?

  Returns true if this enum value equals Backslash

• #backspace?

  Returns true if this enum value equals Backspace

• #backtick?

  Returns true if this enum value equals Backtick

• #bell?

  Returns true if this enum value equals Bell

• #box_bottom_half?

  Returns true if this enum value equals BoxBottomHalf

• #box_bottom_left?

  Returns true if this enum value equals BoxBottomLeft

• #box_bottom_right?

  Returns true if this enum value equals BoxBottomRight

• #box_bottom_right_double?

  Returns true if this enum value equals BoxBottomRightDouble

• #box_bottom_tee?

  Returns true if this enum value equals BoxBottomTee

• #box_cross?

  Returns true if this enum value equals BoxCross

• #box_full_block?

  Returns true if this enum value equals BoxFullBlock

• #box_horizontal?

  Returns true if this enum value equals BoxHorizontal

• #box_left_half?

  Returns true if this enum value equals BoxLeftHalf

• #box_left_tee?

  Returns true if this enum value equals BoxLeftTee

• #box_right_half?

  Returns true if this enum value equals BoxRightHalf

• #box_right_tee?

  Returns true if this enum value equals BoxRightTee

• #box_top_half?

  Returns true if this enum value equals BoxTopHalf

• #box_top_left?

  Returns true if this enum value equals BoxTopLeft

• #box_top_right?

  Returns true if this enum value equals BoxTopRight

• #box_top_right_double?

  Returns true if this enum value equals BoxTopRightDouble

• #box_top_tee?

  Returns true if this enum value equals BoxTopTee

• #box_vertical?

  Returns true if this enum value equals BoxVertical

• #box_vertical_double?

  Returns true if this enum value equals BoxVerticalDouble

• #brace_close?

  Returns true if this enum value equals BraceClose

• #brace_open?

  Returns true if this enum value equals BraceOpen

• #bracket_close?

  Returns true if this enum value equals BracketClose

• #bracket_open?

  Returns true if this enum value equals BracketOpen

• #bullet?

  Returns true if this enum value equals Bullet

• #bullet_small?

  Returns true if this enum value equals BulletSmall

• #cancel?

  Returns true if this enum value equals Cancel

• #caret?

  Returns true if this enum value equals Caret

• #carriage_return?

  Returns true if this enum value equals CarriageReturn

• #char : Char

  Returns the primary Unicode representation for this ASCII or extended piece

• #circle_inverse?

  Returns true if this enum value equals CircleInverse

• #circle_open?

  Returns true if this enum value equals CircleOpen

• #club?

  Returns true if this enum value equals Club

• #colon?

  Returns true if this enum value equals Colon

• #comma?

  Returns true if this enum value equals Comma

• #dark_shade?

  Returns true if this enum value equals DarkShade

• #data_link_escape?

  Returns true if this enum value equals DataLinkEscape

• #degree?

  Returns true if this enum value equals Degree

• #delete?

  Returns true if this enum value equals Delete

• #device_control1?

  Returns true if this enum value equals DeviceControl1

• #device_control2?

  Returns true if this enum value equals DeviceControl2

• #device_control3?

  Returns true if this enum value equals DeviceControl3

• #device_control4?

  Returns true if this enum value equals DeviceControl4

• #diamond?

  Returns true if this enum value equals Diamond

• #digit0?

  Returns true if this enum value equals Digit0

• #digit1?

  Returns true if this enum value equals Digit1

• #digit2?

  Returns true if this enum value equals Digit2

• #digit3?

  Returns true if this enum value equals Digit3

• #digit4?

  Returns true if this enum value equals Digit4

• #digit5?

  Returns true if this enum value equals Digit5

• #digit6?

  Returns true if this enum value equals Digit6

• #digit7?

  Returns true if this enum value equals Digit7

• #digit8?

  Returns true if this enum value equals Digit8

• #digit9?

  Returns true if this enum value equals Digit9

• #dollar?

  Returns true if this enum value equals Dollar

• #double_exclamation?

  Returns true if this enum value equals DoubleExclamation

• #double_quote?

  Returns true if this enum value equals DoubleQuote

• #end_of_block?

  Returns true if this enum value equals EndOfBlock

• #end_of_medium?

  Returns true if this enum value equals EndOfMedium

• #end_of_text?

  Returns true if this enum value equals EndOfText

• #end_of_transmit?

  Returns true if this enum value equals EndOfTransmit

• #enquiry?

  Returns true if this enum value equals Enquiry

• #equal?

  Returns true if this enum value equals Equal

• #escape?

  Returns true if this enum value equals Escape

• #exclamation?

  Returns true if this enum value equals Exclamation

• #file_separator?

  Returns true if this enum value equals FileSeparator

• #form_feed?

  Returns true if this enum value equals FormFeed

• #greater?

  Returns true if this enum value equals Greater

• #group_separator?

  Returns true if this enum value equals GroupSeparator

• #hash?

  Returns true if this enum value equals Hash

• #heart?

  Returns true if this enum value equals Heart

• #hyphen?

  Returns true if this enum value equals Hyphen

• #inverse_bullet?

  Returns true if this enum value equals InverseBullet

• #left_right_arrow?

  Returns true if this enum value equals LeftRightArrow

• #less?

  Returns true if this enum value equals Less

• #light_shade?

  Returns true if this enum value equals LightShade

• #line_feed?

  Returns true if this enum value equals LineFeed

• #medium_shade?

  Returns true if this enum value equals MediumShade

• #musical_note?

  Returns true if this enum value equals MusicalNote

• #musical_notes?

  Returns true if this enum value equals MusicalNotes

• #negative_ack?

  Returns true if this enum value equals NegativeAck

• #nul?

  Returns true if this enum value equals Nul

• #paragraph?

  Returns true if this enum value equals Paragraph

• #paren_close?

  Returns true if this enum value equals ParenClose

• #paren_open?

  Returns true if this enum value equals ParenOpen

• #percent?

  Returns true if this enum value equals Percent

• #period?

  Returns true if this enum value equals Period

• #pipe?

  Returns true if this enum value equals Pipe

• #plus?

  Returns true if this enum value equals Plus

• #question?

  Returns true if this enum value equals Question

• #record_separator?

  Returns true if this enum value equals RecordSeparator

• #rectangle_fill?

  Returns true if this enum value equals RectangleFill

• #right_angle?

  Returns true if this enum value equals RightAngle

• #section?

  Returns true if this enum value equals Section

• #semicolon?

  Returns true if this enum value equals Semicolon

• #shift_in?

  Returns true if this enum value equals ShiftIn

• #shift_out?

  Returns true if this enum value equals ShiftOut

• #single_quote?

  Returns true if this enum value equals SingleQuote

• #slash?

  Returns true if this enum value equals Slash

• #smiley_face?

  Returns true if this enum value equals SmileyFace

• #smiley_inverse?

  Returns true if this enum value equals SmileyInverse

• #space?

  Returns true if this enum value equals Space

• #spade?

  Returns true if this enum value equals Spade

• #square_root?

  Returns true if this enum value equals SquareRoot

• #start_of_heading?

  Returns true if this enum value equals StartOfHeading

• #start_of_text?

  Returns true if this enum value equals StartOfText

• #substitute?

  Returns true if this enum value equals Substitute

• #sun?

  Returns true if this enum value equals Sun

• #synchronous_idle?

  Returns true if this enum value equals SynchronousIdle

• #tab?

  Returns true if this enum value equals Tab

• #tilde?

  Returns true if this enum value equals Tilde

• #to_s(io : IO) : Nil

  Appends a String representation of this enum member to the given io.

• #triangle_down?

  Returns true if this enum value equals TriangleDown

• #triangle_up?

  Returns true if this enum value equals TriangleUp

• #underscore?

  Returns true if this enum value equals Underscore

• #unit_separator?

  Returns true if this enum value equals UnitSeparator

• #vertical_tab?

  Returns true if this enum value equals VerticalTab

Class Method Detail

Instance Method Detail