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634 lines
24 KiB
C++
634 lines
24 KiB
C++
// Formatting library for C++ - color support
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//
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// Copyright (c) 2018 - present, Victor Zverovich and fmt contributors
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// All rights reserved.
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//
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// For the license information refer to format.h.
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#ifndef FMT_COLOR_H_
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#define FMT_COLOR_H_
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#include "format.h"
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FMT_BEGIN_NAMESPACE
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FMT_BEGIN_EXPORT
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enum class color : uint32_t {
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alice_blue = 0xF0F8FF, // rgb(240,248,255)
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antique_white = 0xFAEBD7, // rgb(250,235,215)
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aqua = 0x00FFFF, // rgb(0,255,255)
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aquamarine = 0x7FFFD4, // rgb(127,255,212)
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azure = 0xF0FFFF, // rgb(240,255,255)
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beige = 0xF5F5DC, // rgb(245,245,220)
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bisque = 0xFFE4C4, // rgb(255,228,196)
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black = 0x000000, // rgb(0,0,0)
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blanched_almond = 0xFFEBCD, // rgb(255,235,205)
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blue = 0x0000FF, // rgb(0,0,255)
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blue_violet = 0x8A2BE2, // rgb(138,43,226)
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brown = 0xA52A2A, // rgb(165,42,42)
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burly_wood = 0xDEB887, // rgb(222,184,135)
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cadet_blue = 0x5F9EA0, // rgb(95,158,160)
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chartreuse = 0x7FFF00, // rgb(127,255,0)
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chocolate = 0xD2691E, // rgb(210,105,30)
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coral = 0xFF7F50, // rgb(255,127,80)
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cornflower_blue = 0x6495ED, // rgb(100,149,237)
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cornsilk = 0xFFF8DC, // rgb(255,248,220)
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crimson = 0xDC143C, // rgb(220,20,60)
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cyan = 0x00FFFF, // rgb(0,255,255)
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dark_blue = 0x00008B, // rgb(0,0,139)
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dark_cyan = 0x008B8B, // rgb(0,139,139)
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dark_golden_rod = 0xB8860B, // rgb(184,134,11)
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dark_gray = 0xA9A9A9, // rgb(169,169,169)
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dark_green = 0x006400, // rgb(0,100,0)
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dark_khaki = 0xBDB76B, // rgb(189,183,107)
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dark_magenta = 0x8B008B, // rgb(139,0,139)
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dark_olive_green = 0x556B2F, // rgb(85,107,47)
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dark_orange = 0xFF8C00, // rgb(255,140,0)
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dark_orchid = 0x9932CC, // rgb(153,50,204)
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dark_red = 0x8B0000, // rgb(139,0,0)
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dark_salmon = 0xE9967A, // rgb(233,150,122)
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dark_sea_green = 0x8FBC8F, // rgb(143,188,143)
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dark_slate_blue = 0x483D8B, // rgb(72,61,139)
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dark_slate_gray = 0x2F4F4F, // rgb(47,79,79)
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dark_turquoise = 0x00CED1, // rgb(0,206,209)
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dark_violet = 0x9400D3, // rgb(148,0,211)
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deep_pink = 0xFF1493, // rgb(255,20,147)
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deep_sky_blue = 0x00BFFF, // rgb(0,191,255)
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dim_gray = 0x696969, // rgb(105,105,105)
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dodger_blue = 0x1E90FF, // rgb(30,144,255)
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fire_brick = 0xB22222, // rgb(178,34,34)
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floral_white = 0xFFFAF0, // rgb(255,250,240)
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forest_green = 0x228B22, // rgb(34,139,34)
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fuchsia = 0xFF00FF, // rgb(255,0,255)
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gainsboro = 0xDCDCDC, // rgb(220,220,220)
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ghost_white = 0xF8F8FF, // rgb(248,248,255)
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gold = 0xFFD700, // rgb(255,215,0)
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golden_rod = 0xDAA520, // rgb(218,165,32)
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gray = 0x808080, // rgb(128,128,128)
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green = 0x008000, // rgb(0,128,0)
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green_yellow = 0xADFF2F, // rgb(173,255,47)
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honey_dew = 0xF0FFF0, // rgb(240,255,240)
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hot_pink = 0xFF69B4, // rgb(255,105,180)
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indian_red = 0xCD5C5C, // rgb(205,92,92)
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indigo = 0x4B0082, // rgb(75,0,130)
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ivory = 0xFFFFF0, // rgb(255,255,240)
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khaki = 0xF0E68C, // rgb(240,230,140)
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lavender = 0xE6E6FA, // rgb(230,230,250)
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lavender_blush = 0xFFF0F5, // rgb(255,240,245)
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lawn_green = 0x7CFC00, // rgb(124,252,0)
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lemon_chiffon = 0xFFFACD, // rgb(255,250,205)
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light_blue = 0xADD8E6, // rgb(173,216,230)
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light_coral = 0xF08080, // rgb(240,128,128)
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light_cyan = 0xE0FFFF, // rgb(224,255,255)
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light_golden_rod_yellow = 0xFAFAD2, // rgb(250,250,210)
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light_gray = 0xD3D3D3, // rgb(211,211,211)
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light_green = 0x90EE90, // rgb(144,238,144)
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light_pink = 0xFFB6C1, // rgb(255,182,193)
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light_salmon = 0xFFA07A, // rgb(255,160,122)
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light_sea_green = 0x20B2AA, // rgb(32,178,170)
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light_sky_blue = 0x87CEFA, // rgb(135,206,250)
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light_slate_gray = 0x778899, // rgb(119,136,153)
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light_steel_blue = 0xB0C4DE, // rgb(176,196,222)
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light_yellow = 0xFFFFE0, // rgb(255,255,224)
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lime = 0x00FF00, // rgb(0,255,0)
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lime_green = 0x32CD32, // rgb(50,205,50)
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linen = 0xFAF0E6, // rgb(250,240,230)
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magenta = 0xFF00FF, // rgb(255,0,255)
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maroon = 0x800000, // rgb(128,0,0)
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medium_aquamarine = 0x66CDAA, // rgb(102,205,170)
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medium_blue = 0x0000CD, // rgb(0,0,205)
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medium_orchid = 0xBA55D3, // rgb(186,85,211)
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medium_purple = 0x9370DB, // rgb(147,112,219)
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medium_sea_green = 0x3CB371, // rgb(60,179,113)
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medium_slate_blue = 0x7B68EE, // rgb(123,104,238)
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medium_spring_green = 0x00FA9A, // rgb(0,250,154)
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medium_turquoise = 0x48D1CC, // rgb(72,209,204)
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medium_violet_red = 0xC71585, // rgb(199,21,133)
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midnight_blue = 0x191970, // rgb(25,25,112)
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mint_cream = 0xF5FFFA, // rgb(245,255,250)
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misty_rose = 0xFFE4E1, // rgb(255,228,225)
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moccasin = 0xFFE4B5, // rgb(255,228,181)
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navajo_white = 0xFFDEAD, // rgb(255,222,173)
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navy = 0x000080, // rgb(0,0,128)
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old_lace = 0xFDF5E6, // rgb(253,245,230)
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olive = 0x808000, // rgb(128,128,0)
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olive_drab = 0x6B8E23, // rgb(107,142,35)
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orange = 0xFFA500, // rgb(255,165,0)
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orange_red = 0xFF4500, // rgb(255,69,0)
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orchid = 0xDA70D6, // rgb(218,112,214)
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pale_golden_rod = 0xEEE8AA, // rgb(238,232,170)
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pale_green = 0x98FB98, // rgb(152,251,152)
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pale_turquoise = 0xAFEEEE, // rgb(175,238,238)
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pale_violet_red = 0xDB7093, // rgb(219,112,147)
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papaya_whip = 0xFFEFD5, // rgb(255,239,213)
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peach_puff = 0xFFDAB9, // rgb(255,218,185)
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peru = 0xCD853F, // rgb(205,133,63)
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pink = 0xFFC0CB, // rgb(255,192,203)
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plum = 0xDDA0DD, // rgb(221,160,221)
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powder_blue = 0xB0E0E6, // rgb(176,224,230)
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purple = 0x800080, // rgb(128,0,128)
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rebecca_purple = 0x663399, // rgb(102,51,153)
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red = 0xFF0000, // rgb(255,0,0)
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rosy_brown = 0xBC8F8F, // rgb(188,143,143)
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royal_blue = 0x4169E1, // rgb(65,105,225)
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saddle_brown = 0x8B4513, // rgb(139,69,19)
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salmon = 0xFA8072, // rgb(250,128,114)
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sandy_brown = 0xF4A460, // rgb(244,164,96)
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sea_green = 0x2E8B57, // rgb(46,139,87)
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sea_shell = 0xFFF5EE, // rgb(255,245,238)
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sienna = 0xA0522D, // rgb(160,82,45)
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silver = 0xC0C0C0, // rgb(192,192,192)
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sky_blue = 0x87CEEB, // rgb(135,206,235)
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slate_blue = 0x6A5ACD, // rgb(106,90,205)
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slate_gray = 0x708090, // rgb(112,128,144)
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snow = 0xFFFAFA, // rgb(255,250,250)
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spring_green = 0x00FF7F, // rgb(0,255,127)
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steel_blue = 0x4682B4, // rgb(70,130,180)
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tan = 0xD2B48C, // rgb(210,180,140)
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teal = 0x008080, // rgb(0,128,128)
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thistle = 0xD8BFD8, // rgb(216,191,216)
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tomato = 0xFF6347, // rgb(255,99,71)
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turquoise = 0x40E0D0, // rgb(64,224,208)
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violet = 0xEE82EE, // rgb(238,130,238)
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wheat = 0xF5DEB3, // rgb(245,222,179)
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white = 0xFFFFFF, // rgb(255,255,255)
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white_smoke = 0xF5F5F5, // rgb(245,245,245)
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yellow = 0xFFFF00, // rgb(255,255,0)
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yellow_green = 0x9ACD32 // rgb(154,205,50)
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}; // enum class color
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enum class terminal_color : uint8_t {
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black = 30,
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red,
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green,
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yellow,
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blue,
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magenta,
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cyan,
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white,
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bright_black = 90,
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bright_red,
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bright_green,
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bright_yellow,
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bright_blue,
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bright_magenta,
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bright_cyan,
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bright_white
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};
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enum class emphasis : uint8_t {
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bold = 1,
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faint = 1 << 1,
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italic = 1 << 2,
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underline = 1 << 3,
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blink = 1 << 4,
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reverse = 1 << 5,
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conceal = 1 << 6,
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strikethrough = 1 << 7,
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};
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// rgb is a struct for red, green and blue colors.
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// Using the name "rgb" makes some editors show the color in a tooltip.
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struct rgb {
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FMT_CONSTEXPR rgb() : r(0), g(0), b(0) {}
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FMT_CONSTEXPR rgb(uint8_t r_, uint8_t g_, uint8_t b_) : r(r_), g(g_), b(b_) {}
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FMT_CONSTEXPR rgb(uint32_t hex)
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: r((hex >> 16) & 0xFF), g((hex >> 8) & 0xFF), b(hex & 0xFF) {}
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FMT_CONSTEXPR rgb(color hex)
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: r((uint32_t(hex) >> 16) & 0xFF),
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g((uint32_t(hex) >> 8) & 0xFF),
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b(uint32_t(hex) & 0xFF) {}
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uint8_t r;
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uint8_t g;
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uint8_t b;
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};
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FMT_BEGIN_DETAIL_NAMESPACE
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// color is a struct of either a rgb color or a terminal color.
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struct color_type {
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FMT_CONSTEXPR color_type() noexcept : is_rgb(), value{} {}
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FMT_CONSTEXPR color_type(color rgb_color) noexcept : is_rgb(true), value{} {
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value.rgb_color = static_cast<uint32_t>(rgb_color);
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}
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FMT_CONSTEXPR color_type(rgb rgb_color) noexcept : is_rgb(true), value{} {
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value.rgb_color = (static_cast<uint32_t>(rgb_color.r) << 16) |
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(static_cast<uint32_t>(rgb_color.g) << 8) | rgb_color.b;
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}
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FMT_CONSTEXPR color_type(terminal_color term_color) noexcept
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: is_rgb(), value{} {
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value.term_color = static_cast<uint8_t>(term_color);
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}
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bool is_rgb;
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union color_union {
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uint8_t term_color;
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uint32_t rgb_color;
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} value;
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};
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FMT_END_DETAIL_NAMESPACE
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/** A text style consisting of foreground and background colors and emphasis. */
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class text_style {
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public:
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FMT_CONSTEXPR text_style(emphasis em = emphasis()) noexcept
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: set_foreground_color(), set_background_color(), ems(em) {}
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FMT_CONSTEXPR text_style& operator|=(const text_style& rhs) {
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if (!set_foreground_color) {
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set_foreground_color = rhs.set_foreground_color;
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foreground_color = rhs.foreground_color;
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} else if (rhs.set_foreground_color) {
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if (!foreground_color.is_rgb || !rhs.foreground_color.is_rgb)
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FMT_THROW(format_error("can't OR a terminal color"));
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foreground_color.value.rgb_color |= rhs.foreground_color.value.rgb_color;
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}
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if (!set_background_color) {
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set_background_color = rhs.set_background_color;
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background_color = rhs.background_color;
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} else if (rhs.set_background_color) {
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if (!background_color.is_rgb || !rhs.background_color.is_rgb)
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FMT_THROW(format_error("can't OR a terminal color"));
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background_color.value.rgb_color |= rhs.background_color.value.rgb_color;
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}
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ems = static_cast<emphasis>(static_cast<uint8_t>(ems) |
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static_cast<uint8_t>(rhs.ems));
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return *this;
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}
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friend FMT_CONSTEXPR text_style operator|(text_style lhs,
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const text_style& rhs) {
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return lhs |= rhs;
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}
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FMT_CONSTEXPR bool has_foreground() const noexcept {
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return set_foreground_color;
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}
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FMT_CONSTEXPR bool has_background() const noexcept {
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return set_background_color;
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}
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FMT_CONSTEXPR bool has_emphasis() const noexcept {
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return static_cast<uint8_t>(ems) != 0;
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}
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FMT_CONSTEXPR detail::color_type get_foreground() const noexcept {
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FMT_ASSERT(has_foreground(), "no foreground specified for this style");
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return foreground_color;
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}
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FMT_CONSTEXPR detail::color_type get_background() const noexcept {
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FMT_ASSERT(has_background(), "no background specified for this style");
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return background_color;
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}
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FMT_CONSTEXPR emphasis get_emphasis() const noexcept {
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FMT_ASSERT(has_emphasis(), "no emphasis specified for this style");
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return ems;
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}
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private:
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FMT_CONSTEXPR text_style(bool is_foreground,
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detail::color_type text_color) noexcept
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: set_foreground_color(), set_background_color(), ems() {
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if (is_foreground) {
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foreground_color = text_color;
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set_foreground_color = true;
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} else {
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background_color = text_color;
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set_background_color = true;
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}
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}
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friend FMT_CONSTEXPR text_style fg(detail::color_type foreground) noexcept;
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friend FMT_CONSTEXPR text_style bg(detail::color_type background) noexcept;
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detail::color_type foreground_color;
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detail::color_type background_color;
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bool set_foreground_color;
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bool set_background_color;
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emphasis ems;
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};
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/** Creates a text style from the foreground (text) color. */
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FMT_CONSTEXPR inline text_style fg(detail::color_type foreground) noexcept {
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return text_style(true, foreground);
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}
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/** Creates a text style from the background color. */
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FMT_CONSTEXPR inline text_style bg(detail::color_type background) noexcept {
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return text_style(false, background);
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}
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FMT_CONSTEXPR inline text_style operator|(emphasis lhs, emphasis rhs) noexcept {
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return text_style(lhs) | rhs;
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}
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FMT_BEGIN_DETAIL_NAMESPACE
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template <typename Char> struct ansi_color_escape {
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FMT_CONSTEXPR ansi_color_escape(detail::color_type text_color,
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const char* esc) noexcept {
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// If we have a terminal color, we need to output another escape code
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// sequence.
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if (!text_color.is_rgb) {
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bool is_background = esc == string_view("\x1b[48;2;");
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uint32_t value = text_color.value.term_color;
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// Background ASCII codes are the same as the foreground ones but with
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// 10 more.
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if (is_background) value += 10u;
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size_t index = 0;
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buffer[index++] = static_cast<Char>('\x1b');
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buffer[index++] = static_cast<Char>('[');
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if (value >= 100u) {
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buffer[index++] = static_cast<Char>('1');
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value %= 100u;
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}
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buffer[index++] = static_cast<Char>('0' + value / 10u);
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buffer[index++] = static_cast<Char>('0' + value % 10u);
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buffer[index++] = static_cast<Char>('m');
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buffer[index++] = static_cast<Char>('\0');
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return;
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}
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for (int i = 0; i < 7; i++) {
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buffer[i] = static_cast<Char>(esc[i]);
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}
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rgb color(text_color.value.rgb_color);
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to_esc(color.r, buffer + 7, ';');
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to_esc(color.g, buffer + 11, ';');
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to_esc(color.b, buffer + 15, 'm');
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buffer[19] = static_cast<Char>(0);
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}
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FMT_CONSTEXPR ansi_color_escape(emphasis em) noexcept {
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uint8_t em_codes[num_emphases] = {};
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if (has_emphasis(em, emphasis::bold)) em_codes[0] = 1;
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if (has_emphasis(em, emphasis::faint)) em_codes[1] = 2;
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if (has_emphasis(em, emphasis::italic)) em_codes[2] = 3;
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if (has_emphasis(em, emphasis::underline)) em_codes[3] = 4;
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if (has_emphasis(em, emphasis::blink)) em_codes[4] = 5;
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if (has_emphasis(em, emphasis::reverse)) em_codes[5] = 7;
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if (has_emphasis(em, emphasis::conceal)) em_codes[6] = 8;
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if (has_emphasis(em, emphasis::strikethrough)) em_codes[7] = 9;
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size_t index = 0;
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for (size_t i = 0; i < num_emphases; ++i) {
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if (!em_codes[i]) continue;
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buffer[index++] = static_cast<Char>('\x1b');
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buffer[index++] = static_cast<Char>('[');
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buffer[index++] = static_cast<Char>('0' + em_codes[i]);
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buffer[index++] = static_cast<Char>('m');
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}
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buffer[index++] = static_cast<Char>(0);
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}
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FMT_CONSTEXPR operator const Char*() const noexcept { return buffer; }
|
|
|
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FMT_CONSTEXPR const Char* begin() const noexcept { return buffer; }
|
|
FMT_CONSTEXPR_CHAR_TRAITS const Char* end() const noexcept {
|
|
return buffer + std::char_traits<Char>::length(buffer);
|
|
}
|
|
|
|
private:
|
|
static constexpr size_t num_emphases = 8;
|
|
Char buffer[7u + 3u * num_emphases + 1u];
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|
|
|
static FMT_CONSTEXPR void to_esc(uint8_t c, Char* out,
|
|
char delimiter) noexcept {
|
|
out[0] = static_cast<Char>('0' + c / 100);
|
|
out[1] = static_cast<Char>('0' + c / 10 % 10);
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|
out[2] = static_cast<Char>('0' + c % 10);
|
|
out[3] = static_cast<Char>(delimiter);
|
|
}
|
|
static FMT_CONSTEXPR bool has_emphasis(emphasis em, emphasis mask) noexcept {
|
|
return static_cast<uint8_t>(em) & static_cast<uint8_t>(mask);
|
|
}
|
|
};
|
|
|
|
template <typename Char>
|
|
FMT_CONSTEXPR ansi_color_escape<Char> make_foreground_color(
|
|
detail::color_type foreground) noexcept {
|
|
return ansi_color_escape<Char>(foreground, "\x1b[38;2;");
|
|
}
|
|
|
|
template <typename Char>
|
|
FMT_CONSTEXPR ansi_color_escape<Char> make_background_color(
|
|
detail::color_type background) noexcept {
|
|
return ansi_color_escape<Char>(background, "\x1b[48;2;");
|
|
}
|
|
|
|
template <typename Char>
|
|
FMT_CONSTEXPR ansi_color_escape<Char> make_emphasis(emphasis em) noexcept {
|
|
return ansi_color_escape<Char>(em);
|
|
}
|
|
|
|
template <typename Char> inline void reset_color(buffer<Char>& buffer) {
|
|
auto reset_color = string_view("\x1b[0m");
|
|
buffer.append(reset_color.begin(), reset_color.end());
|
|
}
|
|
|
|
template <typename T> struct styled_arg {
|
|
const T& value;
|
|
text_style style;
|
|
};
|
|
|
|
template <typename Char>
|
|
void vformat_to(buffer<Char>& buf, const text_style& ts,
|
|
basic_string_view<Char> format_str,
|
|
basic_format_args<buffer_context<type_identity_t<Char>>> args) {
|
|
bool has_style = false;
|
|
if (ts.has_emphasis()) {
|
|
has_style = true;
|
|
auto emphasis = detail::make_emphasis<Char>(ts.get_emphasis());
|
|
buf.append(emphasis.begin(), emphasis.end());
|
|
}
|
|
if (ts.has_foreground()) {
|
|
has_style = true;
|
|
auto foreground = detail::make_foreground_color<Char>(ts.get_foreground());
|
|
buf.append(foreground.begin(), foreground.end());
|
|
}
|
|
if (ts.has_background()) {
|
|
has_style = true;
|
|
auto background = detail::make_background_color<Char>(ts.get_background());
|
|
buf.append(background.begin(), background.end());
|
|
}
|
|
detail::vformat_to(buf, format_str, args, {});
|
|
if (has_style) detail::reset_color<Char>(buf);
|
|
}
|
|
|
|
FMT_END_DETAIL_NAMESPACE
|
|
|
|
inline void vprint(std::FILE* f, const text_style& ts, string_view fmt,
|
|
format_args args) {
|
|
// Legacy wide streams are not supported.
|
|
auto buf = memory_buffer();
|
|
detail::vformat_to(buf, ts, fmt, args);
|
|
if (detail::is_utf8()) {
|
|
detail::print(f, string_view(buf.begin(), buf.size()));
|
|
return;
|
|
}
|
|
buf.push_back('\0');
|
|
int result = std::fputs(buf.data(), f);
|
|
if (result < 0)
|
|
FMT_THROW(system_error(errno, FMT_STRING("cannot write to file")));
|
|
}
|
|
|
|
/**
|
|
\rst
|
|
Formats a string and prints it to the specified file stream using ANSI
|
|
escape sequences to specify text formatting.
|
|
|
|
**Example**::
|
|
|
|
fmt::print(fmt::emphasis::bold | fg(fmt::color::red),
|
|
"Elapsed time: {0:.2f} seconds", 1.23);
|
|
\endrst
|
|
*/
|
|
template <typename S, typename... Args,
|
|
FMT_ENABLE_IF(detail::is_string<S>::value)>
|
|
void print(std::FILE* f, const text_style& ts, const S& format_str,
|
|
const Args&... args) {
|
|
vprint(f, ts, format_str,
|
|
fmt::make_format_args<buffer_context<char_t<S>>>(args...));
|
|
}
|
|
|
|
/**
|
|
\rst
|
|
Formats a string and prints it to stdout using ANSI escape sequences to
|
|
specify text formatting.
|
|
|
|
**Example**::
|
|
|
|
fmt::print(fmt::emphasis::bold | fg(fmt::color::red),
|
|
"Elapsed time: {0:.2f} seconds", 1.23);
|
|
\endrst
|
|
*/
|
|
template <typename S, typename... Args,
|
|
FMT_ENABLE_IF(detail::is_string<S>::value)>
|
|
void print(const text_style& ts, const S& format_str, const Args&... args) {
|
|
return print(stdout, ts, format_str, args...);
|
|
}
|
|
|
|
template <typename S, typename Char = char_t<S>>
|
|
inline std::basic_string<Char> vformat(
|
|
const text_style& ts, const S& format_str,
|
|
basic_format_args<buffer_context<type_identity_t<Char>>> args) {
|
|
basic_memory_buffer<Char> buf;
|
|
detail::vformat_to(buf, ts, detail::to_string_view(format_str), args);
|
|
return fmt::to_string(buf);
|
|
}
|
|
|
|
/**
|
|
\rst
|
|
Formats arguments and returns the result as a string using ANSI
|
|
escape sequences to specify text formatting.
|
|
|
|
**Example**::
|
|
|
|
#include <fmt/color.h>
|
|
std::string message = fmt::format(fmt::emphasis::bold | fg(fmt::color::red),
|
|
"The answer is {}", 42);
|
|
\endrst
|
|
*/
|
|
template <typename S, typename... Args, typename Char = char_t<S>>
|
|
inline std::basic_string<Char> format(const text_style& ts, const S& format_str,
|
|
const Args&... args) {
|
|
return fmt::vformat(ts, detail::to_string_view(format_str),
|
|
fmt::make_format_args<buffer_context<Char>>(args...));
|
|
}
|
|
|
|
/**
|
|
Formats a string with the given text_style and writes the output to ``out``.
|
|
*/
|
|
template <typename OutputIt, typename Char,
|
|
FMT_ENABLE_IF(detail::is_output_iterator<OutputIt, Char>::value)>
|
|
OutputIt vformat_to(
|
|
OutputIt out, const text_style& ts, basic_string_view<Char> format_str,
|
|
basic_format_args<buffer_context<type_identity_t<Char>>> args) {
|
|
auto&& buf = detail::get_buffer<Char>(out);
|
|
detail::vformat_to(buf, ts, format_str, args);
|
|
return detail::get_iterator(buf, out);
|
|
}
|
|
|
|
/**
|
|
\rst
|
|
Formats arguments with the given text_style, writes the result to the output
|
|
iterator ``out`` and returns the iterator past the end of the output range.
|
|
|
|
**Example**::
|
|
|
|
std::vector<char> out;
|
|
fmt::format_to(std::back_inserter(out),
|
|
fmt::emphasis::bold | fg(fmt::color::red), "{}", 42);
|
|
\endrst
|
|
*/
|
|
template <typename OutputIt, typename S, typename... Args,
|
|
bool enable = detail::is_output_iterator<OutputIt, char_t<S>>::value&&
|
|
detail::is_string<S>::value>
|
|
inline auto format_to(OutputIt out, const text_style& ts, const S& format_str,
|
|
Args&&... args) ->
|
|
typename std::enable_if<enable, OutputIt>::type {
|
|
return vformat_to(out, ts, detail::to_string_view(format_str),
|
|
fmt::make_format_args<buffer_context<char_t<S>>>(args...));
|
|
}
|
|
|
|
template <typename T, typename Char>
|
|
struct formatter<detail::styled_arg<T>, Char> : formatter<T, Char> {
|
|
template <typename FormatContext>
|
|
auto format(const detail::styled_arg<T>& arg, FormatContext& ctx) const
|
|
-> decltype(ctx.out()) {
|
|
const auto& ts = arg.style;
|
|
const auto& value = arg.value;
|
|
auto out = ctx.out();
|
|
|
|
bool has_style = false;
|
|
if (ts.has_emphasis()) {
|
|
has_style = true;
|
|
auto emphasis = detail::make_emphasis<Char>(ts.get_emphasis());
|
|
out = std::copy(emphasis.begin(), emphasis.end(), out);
|
|
}
|
|
if (ts.has_foreground()) {
|
|
has_style = true;
|
|
auto foreground =
|
|
detail::make_foreground_color<Char>(ts.get_foreground());
|
|
out = std::copy(foreground.begin(), foreground.end(), out);
|
|
}
|
|
if (ts.has_background()) {
|
|
has_style = true;
|
|
auto background =
|
|
detail::make_background_color<Char>(ts.get_background());
|
|
out = std::copy(background.begin(), background.end(), out);
|
|
}
|
|
out = formatter<T, Char>::format(value, ctx);
|
|
if (has_style) {
|
|
auto reset_color = string_view("\x1b[0m");
|
|
out = std::copy(reset_color.begin(), reset_color.end(), out);
|
|
}
|
|
return out;
|
|
}
|
|
};
|
|
|
|
/**
|
|
\rst
|
|
Returns an argument that will be formatted using ANSI escape sequences,
|
|
to be used in a formatting function.
|
|
|
|
**Example**::
|
|
|
|
fmt::print("Elapsed time: {0:.2f} seconds",
|
|
fmt::styled(1.23, fmt::fg(fmt::color::green) |
|
|
fmt::bg(fmt::color::blue)));
|
|
\endrst
|
|
*/
|
|
template <typename T>
|
|
FMT_CONSTEXPR auto styled(const T& value, text_style ts)
|
|
-> detail::styled_arg<remove_cvref_t<T>> {
|
|
return detail::styled_arg<remove_cvref_t<T>>{value, ts};
|
|
}
|
|
|
|
FMT_END_EXPORT
|
|
FMT_END_NAMESPACE
|
|
|
|
#endif // FMT_COLOR_H_
|