1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
|
# Colorful language
HELP := "
colorful: A domain-specific language for writing colored text to the terminal
Usage: colorful [args...] [--by-line] [--files files...]
"
CSI := "\033["
use patterns
lang Colorful
convert(text:Text -> Colorful)
text = text.translate({"@"="@(at)", "("="@(lparen)", ")"="@(rparen)"})
return Colorful.from_text(text)
convert(i:Int -> Colorful) return Colorful.from_text("$i")
convert(n:Num -> Colorful) return Colorful.from_text("$n")
func for_terminal(c:Colorful -> Text)
return CSI ++ "m" ++ _for_terminal(c, _TermState())
func print(c:Colorful, newline=yes)
say(c.for_terminal(), newline=newline)
func main(texts:[Text], files:[Path]=[], by_line=no)
for i,text in texts
colorful := Colorful.from_text(text)
colorful.print(newline=no)
if i == texts.length then say("")
else say(" ", newline=no)
if texts.length == 0 and files.length == 0
files = [(/dev/stdin)]
for file in files
if by_line
for line in file.by_line() or exit("Could not read file: $file")
colorful := Colorful.from_text(line)
colorful.print()
else
colorful := Colorful.from_text(file.read() or exit("Could not read file: $file"))
colorful.print(newline=no)
func _for_terminal(c:Colorful, state:_TermState -> Text)
return c.text.map_pattern(recursive=no, $Pat/@(?)/, func(m:PatternMatch) _add_ansi_sequences(m.captures[1], state))
enum _Color(Default, Bright(color:Int16), Color8Bit(color:Int16), Color24Bit(color:Int32))
func from_text(text:Text -> _Color?)
if text.matches_pattern($Pat/#{3-6 hex}/)
hex := text.from(2)
return none unless hex.length == 3 or hex.length == 6
if hex.length == 3
hex = hex[1]++hex[1]++hex[2]++hex[2]++hex[3]++hex[3]
n := Int32.parse("0x" ++ hex) or return none
return Color24Bit(n)
else if text.matches_pattern($Pat/{1-3 digit}/)
n := Int16.parse(text) or return none
if n >= 0 and n <= 255 return Color8Bit(n)
else if text == "black" return _Color.Color8Bit(0)
else if text == "red" return _Color.Color8Bit(1)
else if text == "green" return _Color.Color8Bit(2)
else if text == "yellow" return _Color.Color8Bit(3)
else if text == "blue" return _Color.Color8Bit(4)
else if text == "magenta" return _Color.Color8Bit(5)
else if text == "cyan" return _Color.Color8Bit(6)
else if text == "white" return _Color.Color8Bit(7)
else if text == "default" return _Color.Default
else if text == "BLACK" return _Color.Bright(0)
else if text == "RED" return _Color.Bright(1)
else if text == "GREEN" return _Color.Bright(2)
else if text == "YELLOW" return _Color.Bright(3)
else if text == "BLUE" return _Color.Bright(4)
else if text == "MAGENTA" return _Color.Bright(5)
else if text == "CYAN" return _Color.Bright(6)
else if text == "WHITE" return _Color.Bright(7)
return none
func fg(c:_Color -> Text)
when c is Color8Bit(color)
if color >= 0 and color <= 7 return "$(30+color)"
else if color >= 0 and color <= 255 return "38;5;$color"
is Color24Bit(hex)
if hex >= 0 and hex <= 0xFFFFFF
return "38;2;$((hex >> 16) and 0xFF);$((hex >> 8) and 0xFF);$((hex >> 0) and 0xFF)"
is Bright(color)
if color <= 7 return "$(90+color)"
is Default
return "39"
fail("Invalid foreground color: '$c'")
func bg(c:_Color -> Text)
when c is Color8Bit(color)
if color >= 0 and color <= 7 return "$(40+color)"
else if color >= 0 and color <= 255 return "48;5;$color"
is Color24Bit(hex)
if hex >= 0 and hex <= 0xFFFFFF
return "48;2;$((hex >> 16) and 0xFF);$((hex >> 8) and 0xFF);$((hex >> 0) and 0xFF)"
is Bright(color)
if color <= 7 return "$(90+color)"
is Default
return "49"
fail("Invalid background color: '$c'")
func underline(c:_Color -> Text)
when c is Color8Bit(color)
if color >= 0 and color <= 255 return "58;5;$color"
is Color24Bit(hex)
if hex >= 0 and hex <= 0xFFFFFF
return "58;2;$((hex >> 16) and 0xFF);$((hex >> 8) and 0xFF);$((hex >> 0) and 0xFF)"
is Default
return "59"
is Bright(color)
pass
fail("Invalid underline color: '$c'")
func _toggle(sequences:&[Text], cur,new:Bool, apply,unapply:Text; inline)
if new and not cur
sequences.insert(apply)
else if cur and not new
sequences.insert(unapply)
func _toggle2(sequences:&[Text], cur1,cur2,new1,new2:Bool, apply1,apply2,unapply:Text; inline)
return if new1 == cur1 and new2 == cur2
if (cur1 and not new1) or (cur2 and not new2) # Gotta wipe at least one
sequences.insert(unapply)
cur1, cur2 = no, no # Wiped out
if new1 and not cur1
sequences.insert(apply1)
if new2 and not cur2
sequences.insert(apply2)
struct _TermState(
bold=no, dim=no, italic=no, underline=no, blink=no,
reverse=no, conceal=no, strikethrough=no, fraktur=no, frame=no,
encircle=no, overline=no, superscript=no, subscript=no,
bg=_Color.Default, fg=_Color.Default, underline_color=_Color.Default,
)
func apply(old,new:_TermState -> Text)
sequences : &[Text]
_toggle2(sequences, old.bold, old.dim, new.bold, new.dim, "1", "2", "22")
_toggle2(sequences, old.italic, old.fraktur, new.italic, new.fraktur, "3", "20", "23")
_toggle(sequences, old.underline, new.underline, "4", "24")
_toggle(sequences, old.blink, new.blink, "5", "25")
_toggle(sequences, old.reverse, new.reverse, "7", "27")
_toggle(sequences, old.conceal, new.conceal, "8", "28")
_toggle(sequences, old.strikethrough, new.strikethrough, "9", "29")
_toggle2(sequences, old.frame, old.encircle, new.frame, new.frame, "51", "52", "54")
_toggle(sequences, old.overline, new.overline, "53", "55")
_toggle2(sequences, old.subscript, old.subscript, new.superscript, new.superscript, "73", "74", "75")
if new.bg != old.bg
sequences.insert(new.bg.bg())
if new.fg != old.fg
sequences.insert(new.fg.fg())
if new.underline_color != old.underline_color
sequences.insert(new.underline_color.underline())
if sequences.length == 0
return ""
return CSI ++ ";".join(sequences) ++ "m"
func _add_ansi_sequences(text:Text, prev_state:_TermState -> Text)
if text == "lparen" return "("
else if text == "rparen" return ")"
else if text == "@" or text == "at" return "@"
parts := (
text.pattern_captures($Pat/{0+..}:{0+..}/) or
return "@("++_for_terminal(Colorful.from_text(text), prev_state)++")"
)
attributes := parts[1].split_pattern($Pat/{0+space},{0+space}/)
new_state := prev_state
for attr in attributes
if attr.starts_with("fg=")
new_state.fg = _Color.from_text(attr.from(4))!
else if attr.starts_with("bg=")
new_state.bg = _Color.from_text(attr.from(4))!
else if attr.starts_with("ul=")
new_state.underline_color = _Color.from_text(attr.from(4))!
else if color := _Color.from_text(attr)
new_state.fg = color
else if attr == "b" or attr == "bold"
new_state.bold = yes
else if attr == "d" or attr == "dim"
new_state.dim = yes
else if attr == "i" or attr == "italic"
new_state.italic = yes
else if attr == "u" or attr == "underline"
new_state.underline = yes
else if attr == "B" or attr == "blink"
new_state.blink = yes
else if attr == "r" or attr == "reverse"
new_state.reverse = yes
else if attr == "fraktur"
new_state.fraktur = yes
else if attr == "frame"
new_state.frame = yes
else if attr == "encircle"
new_state.encircle = yes
else if attr == "overline"
new_state.overline = yes
else if attr == "super" or attr == "superscript"
new_state.superscript = yes
else if attr == "sub" or attr == "subscript"
new_state.subscript = yes
else
fail("Invalid attribute: '$attr'")
result := prev_state.apply(new_state)
result ++= parts[2].map_pattern(recursive=no, $Pat/@(?)/, func(m:PatternMatch) _add_ansi_sequences(m.captures[1], new_state))
result ++= new_state.apply(prev_state)
return result
|
