1 // Formatting library for C++ - color support
2 //
3 // Copyright (c) 2018 - present, Victor Zverovich and fmt contributors
4 // All rights reserved.
5 //
6 // For the license information refer to format.h.
7
8 #ifndef FMT_COLOR_H_
9 #define FMT_COLOR_H_
10
11 #include "format.h"
12
13 FMT_BEGIN_NAMESPACE
14
15 #ifdef FMT_DEPRECATED_COLORS
16
17 // color and (v)print_colored are deprecated.
18 enum color { black, red, green, yellow, blue, magenta, cyan, white };
19 FMT_API void vprint_colored(color c, string_view format, format_args args);
20 FMT_API void vprint_colored(color c, wstring_view format, wformat_args args);
21 template <typename... Args>
print_colored(color c,string_view format_str,const Args &...args)22 inline void print_colored(color c, string_view format_str,
23 const Args & ... args) {
24 vprint_colored(c, format_str, make_format_args(args...));
25 }
26 template <typename... Args>
print_colored(color c,wstring_view format_str,const Args &...args)27 inline void print_colored(color c, wstring_view format_str,
28 const Args & ... args) {
29 vprint_colored(c, format_str, make_format_args<wformat_context>(args...));
30 }
31
vprint_colored(color c,string_view format,format_args args)32 inline void vprint_colored(color c, string_view format, format_args args) {
33 char escape[] = "\x1b[30m";
34 escape[3] = static_cast<char>('0' + c);
35 std::fputs(escape, stdout);
36 vprint(format, args);
37 std::fputs(internal::data::RESET_COLOR, stdout);
38 }
39
vprint_colored(color c,wstring_view format,wformat_args args)40 inline void vprint_colored(color c, wstring_view format, wformat_args args) {
41 wchar_t escape[] = L"\x1b[30m";
42 escape[3] = static_cast<wchar_t>('0' + c);
43 std::fputws(escape, stdout);
44 vprint(format, args);
45 std::fputws(internal::data::WRESET_COLOR, stdout);
46 }
47
48 #else
49
50 enum class color : uint32_t {
51 alice_blue = 0xF0F8FF, // rgb(240,248,255)
52 antique_white = 0xFAEBD7, // rgb(250,235,215)
53 aqua = 0x00FFFF, // rgb(0,255,255)
54 aquamarine = 0x7FFFD4, // rgb(127,255,212)
55 azure = 0xF0FFFF, // rgb(240,255,255)
56 beige = 0xF5F5DC, // rgb(245,245,220)
57 bisque = 0xFFE4C4, // rgb(255,228,196)
58 black = 0x000000, // rgb(0,0,0)
59 blanched_almond = 0xFFEBCD, // rgb(255,235,205)
60 blue = 0x0000FF, // rgb(0,0,255)
61 blue_violet = 0x8A2BE2, // rgb(138,43,226)
62 brown = 0xA52A2A, // rgb(165,42,42)
63 burly_wood = 0xDEB887, // rgb(222,184,135)
64 cadet_blue = 0x5F9EA0, // rgb(95,158,160)
65 chartreuse = 0x7FFF00, // rgb(127,255,0)
66 chocolate = 0xD2691E, // rgb(210,105,30)
67 coral = 0xFF7F50, // rgb(255,127,80)
68 cornflower_blue = 0x6495ED, // rgb(100,149,237)
69 cornsilk = 0xFFF8DC, // rgb(255,248,220)
70 crimson = 0xDC143C, // rgb(220,20,60)
71 cyan = 0x00FFFF, // rgb(0,255,255)
72 dark_blue = 0x00008B, // rgb(0,0,139)
73 dark_cyan = 0x008B8B, // rgb(0,139,139)
74 dark_golden_rod = 0xB8860B, // rgb(184,134,11)
75 dark_gray = 0xA9A9A9, // rgb(169,169,169)
76 dark_green = 0x006400, // rgb(0,100,0)
77 dark_khaki = 0xBDB76B, // rgb(189,183,107)
78 dark_magenta = 0x8B008B, // rgb(139,0,139)
79 dark_olive_green = 0x556B2F, // rgb(85,107,47)
80 dark_orange = 0xFF8C00, // rgb(255,140,0)
81 dark_orchid = 0x9932CC, // rgb(153,50,204)
82 dark_red = 0x8B0000, // rgb(139,0,0)
83 dark_salmon = 0xE9967A, // rgb(233,150,122)
84 dark_sea_green = 0x8FBC8F, // rgb(143,188,143)
85 dark_slate_blue = 0x483D8B, // rgb(72,61,139)
86 dark_slate_gray = 0x2F4F4F, // rgb(47,79,79)
87 dark_turquoise = 0x00CED1, // rgb(0,206,209)
88 dark_violet = 0x9400D3, // rgb(148,0,211)
89 deep_pink = 0xFF1493, // rgb(255,20,147)
90 deep_sky_blue = 0x00BFFF, // rgb(0,191,255)
91 dim_gray = 0x696969, // rgb(105,105,105)
92 dodger_blue = 0x1E90FF, // rgb(30,144,255)
93 fire_brick = 0xB22222, // rgb(178,34,34)
94 floral_white = 0xFFFAF0, // rgb(255,250,240)
95 forest_green = 0x228B22, // rgb(34,139,34)
96 fuchsia = 0xFF00FF, // rgb(255,0,255)
97 gainsboro = 0xDCDCDC, // rgb(220,220,220)
98 ghost_white = 0xF8F8FF, // rgb(248,248,255)
99 gold = 0xFFD700, // rgb(255,215,0)
100 golden_rod = 0xDAA520, // rgb(218,165,32)
101 gray = 0x808080, // rgb(128,128,128)
102 green = 0x008000, // rgb(0,128,0)
103 green_yellow = 0xADFF2F, // rgb(173,255,47)
104 honey_dew = 0xF0FFF0, // rgb(240,255,240)
105 hot_pink = 0xFF69B4, // rgb(255,105,180)
106 indian_red = 0xCD5C5C, // rgb(205,92,92)
107 indigo = 0x4B0082, // rgb(75,0,130)
108 ivory = 0xFFFFF0, // rgb(255,255,240)
109 khaki = 0xF0E68C, // rgb(240,230,140)
110 lavender = 0xE6E6FA, // rgb(230,230,250)
111 lavender_blush = 0xFFF0F5, // rgb(255,240,245)
112 lawn_green = 0x7CFC00, // rgb(124,252,0)
113 lemon_chiffon = 0xFFFACD, // rgb(255,250,205)
114 light_blue = 0xADD8E6, // rgb(173,216,230)
115 light_coral = 0xF08080, // rgb(240,128,128)
116 light_cyan = 0xE0FFFF, // rgb(224,255,255)
117 light_golden_rod_yellow = 0xFAFAD2, // rgb(250,250,210)
118 light_gray = 0xD3D3D3, // rgb(211,211,211)
119 light_green = 0x90EE90, // rgb(144,238,144)
120 light_pink = 0xFFB6C1, // rgb(255,182,193)
121 light_salmon = 0xFFA07A, // rgb(255,160,122)
122 light_sea_green = 0x20B2AA, // rgb(32,178,170)
123 light_sky_blue = 0x87CEFA, // rgb(135,206,250)
124 light_slate_gray = 0x778899, // rgb(119,136,153)
125 light_steel_blue = 0xB0C4DE, // rgb(176,196,222)
126 light_yellow = 0xFFFFE0, // rgb(255,255,224)
127 lime = 0x00FF00, // rgb(0,255,0)
128 lime_green = 0x32CD32, // rgb(50,205,50)
129 linen = 0xFAF0E6, // rgb(250,240,230)
130 magenta = 0xFF00FF, // rgb(255,0,255)
131 maroon = 0x800000, // rgb(128,0,0)
132 medium_aquamarine = 0x66CDAA, // rgb(102,205,170)
133 medium_blue = 0x0000CD, // rgb(0,0,205)
134 medium_orchid = 0xBA55D3, // rgb(186,85,211)
135 medium_purple = 0x9370DB, // rgb(147,112,219)
136 medium_sea_green = 0x3CB371, // rgb(60,179,113)
137 medium_slate_blue = 0x7B68EE, // rgb(123,104,238)
138 medium_spring_green = 0x00FA9A, // rgb(0,250,154)
139 medium_turquoise = 0x48D1CC, // rgb(72,209,204)
140 medium_violet_red = 0xC71585, // rgb(199,21,133)
141 midnight_blue = 0x191970, // rgb(25,25,112)
142 mint_cream = 0xF5FFFA, // rgb(245,255,250)
143 misty_rose = 0xFFE4E1, // rgb(255,228,225)
144 moccasin = 0xFFE4B5, // rgb(255,228,181)
145 navajo_white = 0xFFDEAD, // rgb(255,222,173)
146 navy = 0x000080, // rgb(0,0,128)
147 old_lace = 0xFDF5E6, // rgb(253,245,230)
148 olive = 0x808000, // rgb(128,128,0)
149 olive_drab = 0x6B8E23, // rgb(107,142,35)
150 orange = 0xFFA500, // rgb(255,165,0)
151 orange_red = 0xFF4500, // rgb(255,69,0)
152 orchid = 0xDA70D6, // rgb(218,112,214)
153 pale_golden_rod = 0xEEE8AA, // rgb(238,232,170)
154 pale_green = 0x98FB98, // rgb(152,251,152)
155 pale_turquoise = 0xAFEEEE, // rgb(175,238,238)
156 pale_violet_red = 0xDB7093, // rgb(219,112,147)
157 papaya_whip = 0xFFEFD5, // rgb(255,239,213)
158 peach_puff = 0xFFDAB9, // rgb(255,218,185)
159 peru = 0xCD853F, // rgb(205,133,63)
160 pink = 0xFFC0CB, // rgb(255,192,203)
161 plum = 0xDDA0DD, // rgb(221,160,221)
162 powder_blue = 0xB0E0E6, // rgb(176,224,230)
163 purple = 0x800080, // rgb(128,0,128)
164 rebecca_purple = 0x663399, // rgb(102,51,153)
165 red = 0xFF0000, // rgb(255,0,0)
166 rosy_brown = 0xBC8F8F, // rgb(188,143,143)
167 royal_blue = 0x4169E1, // rgb(65,105,225)
168 saddle_brown = 0x8B4513, // rgb(139,69,19)
169 salmon = 0xFA8072, // rgb(250,128,114)
170 sandy_brown = 0xF4A460, // rgb(244,164,96)
171 sea_green = 0x2E8B57, // rgb(46,139,87)
172 sea_shell = 0xFFF5EE, // rgb(255,245,238)
173 sienna = 0xA0522D, // rgb(160,82,45)
174 silver = 0xC0C0C0, // rgb(192,192,192)
175 sky_blue = 0x87CEEB, // rgb(135,206,235)
176 slate_blue = 0x6A5ACD, // rgb(106,90,205)
177 slate_gray = 0x708090, // rgb(112,128,144)
178 snow = 0xFFFAFA, // rgb(255,250,250)
179 spring_green = 0x00FF7F, // rgb(0,255,127)
180 steel_blue = 0x4682B4, // rgb(70,130,180)
181 tan = 0xD2B48C, // rgb(210,180,140)
182 teal = 0x008080, // rgb(0,128,128)
183 thistle = 0xD8BFD8, // rgb(216,191,216)
184 tomato = 0xFF6347, // rgb(255,99,71)
185 turquoise = 0x40E0D0, // rgb(64,224,208)
186 violet = 0xEE82EE, // rgb(238,130,238)
187 wheat = 0xF5DEB3, // rgb(245,222,179)
188 white = 0xFFFFFF, // rgb(255,255,255)
189 white_smoke = 0xF5F5F5, // rgb(245,245,245)
190 yellow = 0xFFFF00, // rgb(255,255,0)
191 yellow_green = 0x9ACD32 // rgb(154,205,50)
192 }; // enum class color
193
194 enum class terminal_color : uint8_t {
195 black = 30,
196 red,
197 green,
198 yellow,
199 blue,
200 magenta,
201 cyan,
202 white,
203 bright_black = 90,
204 bright_red,
205 bright_green,
206 bright_yellow,
207 bright_blue,
208 bright_magenta,
209 bright_cyan,
210 bright_white
211 }; // enum class terminal_color
212
213 enum class emphasis : uint8_t {
214 bold = 1,
215 italic = 1 << 1,
216 underline = 1 << 2,
217 strikethrough = 1 << 3
218 }; // enum class emphasis
219
220 // rgb is a struct for red, green and blue colors.
221 // We use rgb as name because some editors will show it as color direct in the
222 // editor.
223 struct rgb {
224 FMT_CONSTEXPR_DECL rgb() : r(0), g(0), b(0) {}
225 FMT_CONSTEXPR_DECL rgb(uint8_t r_, uint8_t g_, uint8_t b_)
226 : r(r_), g(g_), b(b_) {}
227 FMT_CONSTEXPR_DECL rgb(uint32_t hex)
228 : r((hex >> 16) & 0xFF), g((hex >> 8) & 0xFF), b((hex) & 0xFF) {}
229 FMT_CONSTEXPR_DECL rgb(color hex)
230 : r((uint32_t(hex) >> 16) & 0xFF), g((uint32_t(hex) >> 8) & 0xFF),
231 b(uint32_t(hex) & 0xFF) {}
232 uint8_t r;
233 uint8_t g;
234 uint8_t b;
235 };
236
237 namespace internal {
238
239 // color is a struct of either a rgb color or a terminal color.
240 struct color_type {
241 FMT_CONSTEXPR color_type() FMT_NOEXCEPT
242 : is_rgb(), value{} {}
243 FMT_CONSTEXPR color_type(color rgb_color) FMT_NOEXCEPT
244 : is_rgb(true), value{} {
245 value.rgb_color = static_cast<uint32_t>(rgb_color);
246 }
247 FMT_CONSTEXPR color_type(rgb rgb_color) FMT_NOEXCEPT
248 : is_rgb(true), value{} {
249 value.rgb_color = (static_cast<uint32_t>(rgb_color.r) << 16)
250 | (static_cast<uint32_t>(rgb_color.g) << 8) | rgb_color.b;
251 }
252 FMT_CONSTEXPR color_type(terminal_color term_color) FMT_NOEXCEPT
253 : is_rgb(), value{} {
254 value.term_color = static_cast<uint8_t>(term_color);
255 }
256 bool is_rgb;
257 union color_union {
258 uint8_t term_color;
259 uint32_t rgb_color;
260 } value;
261 };
262 } // namespace internal
263
264 // Experimental text formatting support.
265 class text_style {
266 public:
267 FMT_CONSTEXPR text_style(emphasis em = emphasis()) FMT_NOEXCEPT
268 : set_foreground_color(), set_background_color(), ems(em) {}
269
270 FMT_CONSTEXPR text_style &operator|=(const text_style &rhs) {
271 if (!set_foreground_color) {
272 set_foreground_color = rhs.set_foreground_color;
273 foreground_color = rhs.foreground_color;
274 } else if (rhs.set_foreground_color) {
275 if (!foreground_color.is_rgb || !rhs.foreground_color.is_rgb)
276 throw format_error("can't OR a terminal color");
277 foreground_color.value.rgb_color |= rhs.foreground_color.value.rgb_color;
278 }
279
280 if (!set_background_color) {
281 set_background_color = rhs.set_background_color;
282 background_color = rhs.background_color;
283 } else if (rhs.set_background_color) {
284 if (!background_color.is_rgb || !rhs.background_color.is_rgb)
285 throw format_error("can't OR a terminal color");
286 background_color.value.rgb_color |= rhs.background_color.value.rgb_color;
287 }
288
289 ems = static_cast<emphasis>(static_cast<uint8_t>(ems) |
290 static_cast<uint8_t>(rhs.ems));
291 return *this;
292 }
293
294 friend FMT_CONSTEXPR
295 text_style operator|(text_style lhs, const text_style &rhs) {
296 return lhs |= rhs;
297 }
298
299 FMT_CONSTEXPR text_style &operator&=(const text_style &rhs) {
300 if (!set_foreground_color) {
301 set_foreground_color = rhs.set_foreground_color;
302 foreground_color = rhs.foreground_color;
303 } else if (rhs.set_foreground_color) {
304 if (!foreground_color.is_rgb || !rhs.foreground_color.is_rgb)
305 throw format_error("can't AND a terminal color");
306 foreground_color.value.rgb_color &= rhs.foreground_color.value.rgb_color;
307 }
308
309 if (!set_background_color) {
310 set_background_color = rhs.set_background_color;
311 background_color = rhs.background_color;
312 } else if (rhs.set_background_color) {
313 if (!background_color.is_rgb || !rhs.background_color.is_rgb)
314 throw format_error("can't AND a terminal color");
315 background_color.value.rgb_color &= rhs.background_color.value.rgb_color;
316 }
317
318 ems = static_cast<emphasis>(static_cast<uint8_t>(ems) &
319 static_cast<uint8_t>(rhs.ems));
320 return *this;
321 }
322
323 friend FMT_CONSTEXPR
324 text_style operator&(text_style lhs, const text_style &rhs) {
325 return lhs &= rhs;
326 }
327
328 FMT_CONSTEXPR bool has_foreground() const FMT_NOEXCEPT {
329 return set_foreground_color;
330 }
331 FMT_CONSTEXPR bool has_background() const FMT_NOEXCEPT {
332 return set_background_color;
333 }
334 FMT_CONSTEXPR bool has_emphasis() const FMT_NOEXCEPT {
335 return static_cast<uint8_t>(ems) != 0;
336 }
337 FMT_CONSTEXPR internal::color_type get_foreground() const FMT_NOEXCEPT {
338 assert(has_foreground() && "no foreground specified for this style");
339 return foreground_color;
340 }
341 FMT_CONSTEXPR internal::color_type get_background() const FMT_NOEXCEPT {
342 assert(has_background() && "no background specified for this style");
343 return background_color;
344 }
345 FMT_CONSTEXPR emphasis get_emphasis() const FMT_NOEXCEPT {
346 assert(has_emphasis() && "no emphasis specified for this style");
347 return ems;
348 }
349
350 private:
351 FMT_CONSTEXPR text_style(bool is_foreground,
352 internal::color_type text_color) FMT_NOEXCEPT
353 : set_foreground_color(),
354 set_background_color(),
355 ems() {
356 if (is_foreground) {
357 foreground_color = text_color;
358 set_foreground_color = true;
359 } else {
360 background_color = text_color;
361 set_background_color = true;
362 }
363 }
364
365 friend FMT_CONSTEXPR_DECL text_style fg(internal::color_type foreground)
366 FMT_NOEXCEPT;
367 friend FMT_CONSTEXPR_DECL text_style bg(internal::color_type background)
368 FMT_NOEXCEPT;
369
370 internal::color_type foreground_color;
371 internal::color_type background_color;
372 bool set_foreground_color;
373 bool set_background_color;
374 emphasis ems;
375 };
376
377 FMT_CONSTEXPR text_style fg(internal::color_type foreground) FMT_NOEXCEPT {
378 return text_style(/*is_foreground=*/true, foreground);
379 }
380
381 FMT_CONSTEXPR text_style bg(internal::color_type background) FMT_NOEXCEPT {
382 return text_style(/*is_foreground=*/false, background);
383 }
384
385 FMT_CONSTEXPR text_style operator|(emphasis lhs, emphasis rhs) FMT_NOEXCEPT {
386 return text_style(lhs) | rhs;
387 }
388
389 namespace internal {
390
391 template <typename Char>
392 struct ansi_color_escape {
393 FMT_CONSTEXPR ansi_color_escape(internal::color_type text_color,
394 const char * esc) FMT_NOEXCEPT {
395 // If we have a terminal color, we need to output another escape code
396 // sequence.
397 if (!text_color.is_rgb) {
398 bool is_background = esc == internal::data::BACKGROUND_COLOR;
399 uint32_t value = text_color.value.term_color;
400 // Background ASCII codes are the same as the foreground ones but with
401 // 10 more.
402 if (is_background)
403 value += 10u;
404
405 std::size_t index = 0;
406 buffer[index++] = static_cast<Char>('\x1b');
407 buffer[index++] = static_cast<Char>('[');
408
409 if (value >= 100u) {
410 buffer[index++] = static_cast<Char>('1');
411 value %= 100u;
412 }
413 buffer[index++] = static_cast<Char>('0' + value / 10u);
414 buffer[index++] = static_cast<Char>('0' + value % 10u);
415
416 buffer[index++] = static_cast<Char>('m');
417 buffer[index++] = static_cast<Char>('\0');
418 return;
419 }
420
421 for (int i = 0; i < 7; i++) {
422 buffer[i] = static_cast<Char>(esc[i]);
423 }
424 rgb color(text_color.value.rgb_color);
425 to_esc(color.r, buffer + 7, ';');
426 to_esc(color.g, buffer + 11, ';');
427 to_esc(color.b, buffer + 15, 'm');
428 buffer[19] = static_cast<Char>(0);
429 }
430 FMT_CONSTEXPR ansi_color_escape(emphasis em) FMT_NOEXCEPT {
431 uint8_t em_codes[4] = {};
432 uint8_t em_bits = static_cast<uint8_t>(em);
433 if (em_bits & static_cast<uint8_t>(emphasis::bold))
434 em_codes[0] = 1;
435 if (em_bits & static_cast<uint8_t>(emphasis::italic))
436 em_codes[1] = 3;
437 if (em_bits & static_cast<uint8_t>(emphasis::underline))
438 em_codes[2] = 4;
439 if (em_bits & static_cast<uint8_t>(emphasis::strikethrough))
440 em_codes[3] = 9;
441
442 std::size_t index = 0;
443 for (int i = 0; i < 4; ++i) {
444 if (!em_codes[i])
445 continue;
446 buffer[index++] = static_cast<Char>('\x1b');
447 buffer[index++] = static_cast<Char>('[');
448 buffer[index++] = static_cast<Char>('0' + em_codes[i]);
449 buffer[index++] = static_cast<Char>('m');
450 }
451 buffer[index++] = static_cast<Char>(0);
452 }
453 FMT_CONSTEXPR operator const Char *() const FMT_NOEXCEPT { return buffer; }
454
455 private:
456 Char buffer[7u + 3u * 4u + 1u];
457
458 static FMT_CONSTEXPR void to_esc(uint8_t c, Char *out,
459 char delimiter) FMT_NOEXCEPT {
460 out[0] = static_cast<Char>('0' + c / 100);
461 out[1] = static_cast<Char>('0' + c / 10 % 10);
462 out[2] = static_cast<Char>('0' + c % 10);
463 out[3] = static_cast<Char>(delimiter);
464 }
465 };
466
467 template <typename Char>
468 FMT_CONSTEXPR ansi_color_escape<Char>
469 make_foreground_color(internal::color_type foreground) FMT_NOEXCEPT {
470 return ansi_color_escape<Char>(foreground, internal::data::FOREGROUND_COLOR);
471 }
472
473 template <typename Char>
474 FMT_CONSTEXPR ansi_color_escape<Char>
475 make_background_color(internal::color_type background) FMT_NOEXCEPT {
476 return ansi_color_escape<Char>(background, internal::data::BACKGROUND_COLOR);
477 }
478
479 template <typename Char>
480 FMT_CONSTEXPR ansi_color_escape<Char>
481 make_emphasis(emphasis em) FMT_NOEXCEPT {
482 return ansi_color_escape<Char>(em);
483 }
484
485 template <typename Char>
486 inline void fputs(const Char *chars, FILE *stream) FMT_NOEXCEPT {
487 std::fputs(chars, stream);
488 }
489
490 template <>
491 inline void fputs<wchar_t>(const wchar_t *chars, FILE *stream) FMT_NOEXCEPT {
492 std::fputws(chars, stream);
493 }
494
495 template <typename Char>
496 inline void reset_color(FILE *stream) FMT_NOEXCEPT {
497 fputs(internal::data::RESET_COLOR, stream);
498 }
499
500 template <>
501 inline void reset_color<wchar_t>(FILE *stream) FMT_NOEXCEPT {
502 fputs(internal::data::WRESET_COLOR, stream);
503 }
504
505 // The following specialiazation disables using std::FILE as a character type,
506 // which is needed because or else
507 // fmt::print(stderr, fmt::emphasis::bold, "");
508 // would take stderr (a std::FILE *) as the format string.
509 template <>
510 struct is_string<std::FILE *> : std::false_type {};
511 template <>
512 struct is_string<const std::FILE *> : std::false_type {};
513 } // namespace internal
514
515 template <
516 typename S, typename Char = typename internal::char_t<S>::type>
517 void vprint(std::FILE *f, const text_style &ts, const S &format,
518 basic_format_args<typename buffer_context<Char>::type> args) {
519 bool has_style = false;
520 if (ts.has_emphasis()) {
521 has_style = true;
522 internal::fputs<Char>(
523 internal::make_emphasis<Char>(ts.get_emphasis()), f);
524 }
525 if (ts.has_foreground()) {
526 has_style = true;
527 internal::fputs<Char>(
528 internal::make_foreground_color<Char>(ts.get_foreground()), f);
529 }
530 if (ts.has_background()) {
531 has_style = true;
532 internal::fputs<Char>(
533 internal::make_background_color<Char>(ts.get_background()), f);
534 }
535 vprint(f, format, args);
536 if (has_style) {
537 internal::reset_color<Char>(f);
538 }
539 }
540
541 /**
542 Formats a string and prints it to the specified file stream using ANSI
543 escape sequences to specify text formatting.
544 Example:
545 fmt::print(fmt::emphasis::bold | fg(fmt::color::red),
546 "Elapsed time: {0:.2f} seconds", 1.23);
547 */
548 template <typename String, typename... Args>
549 typename std::enable_if<internal::is_string<String>::value>::type print(
550 std::FILE *f, const text_style &ts, const String &format_str,
551 const Args &... args) {
552 internal::check_format_string<Args...>(format_str);
553 typedef typename internal::char_t<String>::type char_t;
554 typedef typename buffer_context<char_t>::type context_t;
555 format_arg_store<context_t, Args...> as{args...};
556 vprint(f, ts, format_str, basic_format_args<context_t>(as));
557 }
558
559 /**
560 Formats a string and prints it to stdout using ANSI escape sequences to
561 specify text formatting.
562 Example:
563 fmt::print(fmt::emphasis::bold | fg(fmt::color::red),
564 "Elapsed time: {0:.2f} seconds", 1.23);
565 */
566 template <typename String, typename... Args>
567 typename std::enable_if<internal::is_string<String>::value>::type print(
568 const text_style &ts, const String &format_str,
569 const Args &... args) {
570 return print(stdout, ts, format_str, args...);
571 }
572
573 #endif
574
575 FMT_END_NAMESPACE
576
577 #endif // FMT_COLOR_H_
578