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| 1 | +# This file is a part of Julia. License is MIT: https://julialang.org/license |
| 2 | + |
| 3 | +# StyledStrings provides a new way of handling colored output, however the |
| 4 | +# ~decade of colored printing in Julia before now has left us with a legacy, |
| 5 | +# and we should try to maintain compatibility as much as reasonable possible. |
| 6 | + |
| 7 | +module Legacy |
| 8 | + |
| 9 | +using ..StyledStrings: SimpleColor, Face, loadface! |
| 10 | + |
| 11 | +""" |
| 12 | +A mapping from 256-color codes indicies to 8-bit colours, represented with |
| 13 | +`SimpleColor`-compatible `UInt32`s. |
| 14 | +""" |
| 15 | +const ANSI_256_COLORS = |
| 16 | + [0x000000, 0x800000, 0x008000, 0x808000, 0x000080, 0x800080, 0x008080, |
| 17 | + 0xc0c0c0, 0x808080, 0xff0000, 0x00ff00, 0xffff00, 0x0000ff, 0xff00ff, |
| 18 | + 0x00ffff, 0xffffff, 0x000000, 0x00005f, 0x000087, 0x0000af, 0x0000d7, |
| 19 | + 0x0000ff, 0x005f00, 0x005f5f, 0x005f87, 0x005faf, 0x005fd7, 0x005fff, |
| 20 | + 0x008700, 0x00875f, 0x008787, 0x0087af, 0x0087d7, 0x0087ff, 0x00af00, |
| 21 | + 0x00af5f, 0x00af87, 0x00afaf, 0x00afd7, 0x00afff, 0x00d700, 0x00d75f, |
| 22 | + 0x00d787, 0x00d7af, 0x00d7d7, 0x00d7ff, 0x00ff00, 0x00ff5f, 0x00ff87, |
| 23 | + 0x00ffaf, 0x00ffd7, 0x00ffff, 0x5f0000, 0x5f005f, 0x5f0087, 0x5f00af, |
| 24 | + 0x5f00d7, 0x5f00ff, 0x5f5f00, 0x5f5f5f, 0x5f5f87, 0x5f5faf, 0x5f5fd7, |
| 25 | + 0x5f5fff, 0x5f8700, 0x5f875f, 0x5f8787, 0x5f87af, 0x5f87d7, 0x5f87ff, |
| 26 | + 0x5faf00, 0x5faf5f, 0x5faf87, 0x5fafaf, 0x5fafd7, 0x5fafff, 0x5fd700, |
| 27 | + 0x5fd75f, 0x5fd787, 0x5fd7af, 0x5fd7d7, 0x5fd7ff, 0x5fff00, 0x5fff5f, |
| 28 | + 0x5fff87, 0x5fffaf, 0x5fffd7, 0x5fffff, 0x870000, 0x87005f, 0x870087, |
| 29 | + 0x8700af, 0x8700d7, 0x8700ff, 0x875f00, 0x875f5f, 0x875f87, 0x875faf, |
| 30 | + 0x875fd7, 0x875fff, 0x878700, 0x87875f, 0x878787, 0x8787af, 0x8787d7, |
| 31 | + 0x8787ff, 0x87af00, 0x87af5f, 0x87af87, 0x87afaf, 0x87afd7, 0x87afff, |
| 32 | + 0x87d700, 0x87d75f, 0x87d787, 0x87d7af, 0x87d7d7, 0x87d7ff, 0x87ff00, |
| 33 | + 0x87ff5f, 0x87ff87, 0x87ffaf, 0x87ffd7, 0x87ffff, 0xaf0000, 0xaf005f, |
| 34 | + 0xaf0087, 0xaf00af, 0xaf00d7, 0xaf00ff, 0xaf5f00, 0xaf5f5f, 0xaf5f87, |
| 35 | + 0xaf5faf, 0xaf5fd7, 0xaf5fff, 0xaf8700, 0xaf875f, 0xaf8787, 0xaf87af, |
| 36 | + 0xaf87d7, 0xaf87ff, 0xafaf00, 0xafaf5f, 0xafaf87, 0xafafaf, 0xafafd7, |
| 37 | + 0xafafff, 0xafd700, 0xafd75f, 0xafd787, 0xafd7af, 0xafd7d7, 0xafd7ff, |
| 38 | + 0xafff00, 0xafff5f, 0xafff87, 0xafffaf, 0xafffd7, 0xafffff, 0xd70000, |
| 39 | + 0xd7005f, 0xd70087, 0xd700af, 0xd700d7, 0xd700ff, 0xd75f00, 0xd75f5f, |
| 40 | + 0xd75f87, 0xd75faf, 0xd75fd7, 0xd75fff, 0xd78700, 0xd7875f, 0xd78787, |
| 41 | + 0xd787af, 0xd787d7, 0xd787ff, 0xd7af00, 0xd7af5f, 0xd7af87, 0xd7afaf, |
| 42 | + 0xd7afd7, 0xd7afff, 0xd7d700, 0xd7d75f, 0xd7d787, 0xd7d7af, 0xd7d7d7, |
| 43 | + 0xd7d7ff, 0xd7ff00, 0xd7ff5f, 0xd7ff87, 0xd7ffaf, 0xd7ffd7, 0xd7ffff, |
| 44 | + 0xff0000, 0xff005f, 0xff0087, 0xff00af, 0xff00d7, 0xff00ff, 0xff5f00, |
| 45 | + 0xff5f5f, 0xff5f87, 0xff5faf, 0xff5fd7, 0xff5fff, 0xff8700, 0xff875f, |
| 46 | + 0xff8787, 0xff87af, 0xff87d7, 0xff87ff, 0xffaf00, 0xffaf5f, 0xffaf87, |
| 47 | + 0xffafaf, 0xffafd7, 0xffafff, 0xffd700, 0xffd75f, 0xffd787, 0xffd7af, |
| 48 | + 0xffd7d7, 0xffd7ff, 0xffff00, 0xffff5f, 0xffff87, 0xffffaf, 0xffffd7, |
| 49 | + 0xffffff, 0x080808, 0x121212, 0x1c1c1c, 0x262626, 0x303030, 0x3a3a3a, |
| 50 | + 0x444444, 0x4e4e4e, 0x585858, 0x626262, 0x6c6c6c, 0x767676, 0x808080, |
| 51 | + 0x8a8a8a, 0x949494, 0x9e9e9e, 0xa8a8a8, 0xb2b2b2, 0xbcbcbc, 0xc6c6c6, |
| 52 | + 0xd0d0d0, 0xdadada, 0xe4e4e4, 0xeeeeee] |
| 53 | + |
| 54 | +""" |
| 55 | +A mapping from old named colours to the new names, specifically from `light_*` |
| 56 | +to `bright_*`. |
| 57 | +""" |
| 58 | +const RENAMED_COLORS = Dict{Symbol, Symbol}( |
| 59 | + :light_black => :bright_black, |
| 60 | + :light_red => :bright_red, |
| 61 | + :light_green => :bright_green, |
| 62 | + :light_yellow => :bright_yellow, |
| 63 | + :light_blue => :bright_blue, |
| 64 | + :light_magenta => :bright_magenta, |
| 65 | + :light_cyan => :bright_cyan, |
| 66 | + :light_white => :bright_white) |
| 67 | + |
| 68 | +legacy_color(color::Symbol) = SimpleColor(get(RENAMED_COLORS, color, color)) |
| 69 | + |
| 70 | +function legacy_color(color256::Int) |
| 71 | + if checkbounds(Bool, ANSI_256_COLORS, color256+1) |
| 72 | + SimpleColor(ANSI_256_COLORS[color256+1]) |
| 73 | + else |
| 74 | + nothing |
| 75 | + end |
| 76 | +end |
| 77 | + |
| 78 | +""" |
| 79 | + legacy_color(color::Union{String, Symbol, Int}) |
| 80 | +
|
| 81 | +Attempt to obtain a `SimpleColor` for a "legacy" color value `color`. |
| 82 | +
|
| 83 | +When this is not possible, `nothing` is returned. |
| 84 | +""" |
| 85 | +function legacy_color(color::String) |
| 86 | + namedcolours = ("black", "red", "green", "yellow", "blue", "magenta", |
| 87 | + "cyan", "white", "bright_black", "grey", "gray", |
| 88 | + "bright_red", "bright_green", "bright_yellow", |
| 89 | + "bright_blue", "bright_magenta", "bright_cyan", |
| 90 | + "bright_white", "light_black", "light_red", "light_green", |
| 91 | + "light_yellow", "light_blue", "light_magenta", "light_cyan", |
| 92 | + "light_white") |
| 93 | + if color in namedcolours |
| 94 | + legacy_color(Symbol(color)) |
| 95 | + elseif 0 <= (color256 = something(tryparse(Int, color), -1)) <= 255 |
| 96 | + legacy_color(color256) |
| 97 | + else |
| 98 | + nothing |
| 99 | + end |
| 100 | +end |
| 101 | + |
| 102 | +""" |
| 103 | + load_env_colors!() |
| 104 | +
|
| 105 | +Try to emulate the effect of the various `*_color()` functions of `Base`, by |
| 106 | +loading any specified colours as foregrounds of the relevant faces. |
| 107 | +""" |
| 108 | +function load_env_colors!() |
| 109 | + for (fname, envkey) in ((:error, "JULIA_ERROR_COLOR"), |
| 110 | + (:warn, "JULIA_WARN_COLOR"), |
| 111 | + (:info, "JULIA_INFO_COLOR"), |
| 112 | + (:log_debug, "JULIA_DEBUG_COLOR")) |
| 113 | + if haskey(ENV, envkey) |
| 114 | + ecolor = legacy_color(ENV[envkey]) |
| 115 | + if !isnothing(ecolor) |
| 116 | + loadface!(fname => Face(foreground = ecolor)) |
| 117 | + end |
| 118 | + end |
| 119 | + end |
| 120 | +end |
| 121 | + |
| 122 | +end |
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