1/*
2 * Copyright 2006 The Android Open Source Project
3 *
4 * Use of this source code is governed by a BSD-style license that can be
5 * found in the LICENSE file.
6 */
7
8
9#include "include/utils/SkParse.h"
10
11static const unsigned int gColorNames[] = {
120x85891945, 0x32a50000, 0x00f0f8ff, // aliceblue
130x85d44c6b, 0x16e84d0a, 0x00faebd7, // antiquewhite
140x86350800, 0x0000ffff, // aqua
150x86350b43, 0x492e2800, 0x007fffd4, // aquamarine
160x87559140, 0x00f0ffff, // azure
170x88a93940, 0x00f5f5dc, // beige
180x89338d4a, 0x00ffe4c4, // bisque
190x89811ac0, 0x00000000, // black
200x898170d1, 0x1481635f, 0x38800000, 0x00ffebcd, // blanchedalmond
210x89952800, 0x000000ff, // blue
220x89952d93, 0x3d85a000, 0x008a2be2, // blueviolet
230x8a4fbb80, 0x00a52a2a, // brown
240x8ab2666f, 0x3de40000, 0x00deb887, // burlywood
250x8c242d05, 0x32a50000, 0x005f9ea0, // cadetblue
260x8d019525, 0x16b32800, 0x007fff00, // chartreuse
270x8d0f1bd9, 0x06850000, 0x00d2691e, // chocolate
280x8df20b00, 0x00ff7f50, // coral
290x8df27199, 0x3ee59099, 0x54a00000, 0x006495ed, // cornflowerblue
300x8df274d3, 0x31600000, 0x00fff8dc, // cornsilk
310x8e496cdf, 0x38000000, 0x00dc143c, // crimson
320x8f217000, 0x0000ffff, // cyan
330x90325899, 0x54a00000, 0x0000008b, // darkblue
340x903258f3, 0x05c00000, 0x00008b8b, // darkcyan
350x903259df, 0x3085749f, 0x10000000, 0x00b8860b, // darkgoldenrod
360x903259e5, 0x07200000, 0x00a9a9a9, // darkgray
370x903259e5, 0x14ae0000, 0x00006400, // darkgreen
380x90325ad1, 0x05690000, 0x00bdb76b, // darkkhaki
390x90325b43, 0x1caea040, 0x008b008b, // darkmagenta
400x90325bd9, 0x26c53c8b, 0x15c00000, 0x00556b2f, // darkolivegreen
410x90325be5, 0x05c72800, 0x00ff8c00, // darkorange
420x90325be5, 0x0d092000, 0x009932cc, // darkorchid
430x90325c8b, 0x10000000, 0x008b0000, // darkred
440x90325cc3, 0x31af7000, 0x00e9967a, // darksalmon
450x90325ccb, 0x04f2295c, 0x008fbc8f, // darkseagreen
460x90325cd9, 0x0685132b, 0x14000000, 0x00483d8b, // darkslateblue
470x90325cd9, 0x06853c83, 0x64000000, 0x002f4f4f, // darkslategray
480x90325d2b, 0x4a357a67, 0x14000000, 0x0000ced1, // darkturquoise
490x90325d93, 0x3d85a000, 0x009400d3, // darkviolet
500x90a58413, 0x39600000, 0x00ff1493, // deeppink
510x90a584d7, 0x644ca940, 0x0000bfff, // deepskyblue
520x912d3c83, 0x64000000, 0x00696969, // dimgray
530x91e43965, 0x09952800, 0x001e90ff, // dodgerblue
540x993228a5, 0x246b0000, 0x00b22222, // firebrick
550x998f9059, 0x5d09a140, 0x00fffaf0, // floralwhite
560x99f22ce9, 0x1e452b80, 0x00228b22, // forestgreen
570x9aa344d3, 0x04000000, 0x00ff00ff, // fuchsia
580x9c2974c5, 0x3e4f0000, 0x00dcdcdc, // gainsboro
590x9d0f9d2f, 0x21342800, 0x00f8f8ff, // ghostwhite
600x9dec2000, 0x00ffd700, // gold
610x9dec215d, 0x49e40000, 0x00daa520, // goldenrod
620x9e41c800, 0x00808080, // gray
630x9e452b80, 0x00008000, // green
640x9e452bb3, 0x158c7dc0, 0x00adff2f, // greenyellow
650xa1ee2e49, 0x16e00000, 0x00f0fff0, // honeydew
660xa1f4825d, 0x2c000000, 0x00ff69b4, // hotpink
670xa5c4485d, 0x48a40000, 0x00cd5c5c, // indianred
680xa5c449de, 0x004b0082, // indigo
690xa6cf9640, 0x00fffff0, // ivory
700xad015a40, 0x00f0e68c, // khaki
710xb0362b89, 0x16400000, 0x00e6e6fa, // lavender
720xb0362b89, 0x16426567, 0x20000000, 0x00fff0f5, // lavenderblush
730xb03771e5, 0x14ae0000, 0x007cfc00, // lawngreen
740xb0ad7b87, 0x212633dc, 0x00fffacd, // lemonchiffon
750xb1274505, 0x32a50000, 0x00add8e6, // lightblue
760xb1274507, 0x3e416000, 0x00f08080, // lightcoral
770xb1274507, 0x642e0000, 0x00e0ffff, // lightcyan
780xb127450f, 0x3d842ba5, 0x3c992b19, 0x3ee00000, 0x00fafad2, // lightgoldenrodyellow
790xb127450f, 0x48a57000, 0x0090ee90, // lightgreen
800xb127450f, 0x48b90000, 0x00d3d3d3, // lightgrey
810xb1274521, 0x25cb0000, 0x00ffb6c1, // lightpink
820xb1274527, 0x058d7b80, 0x00ffa07a, // lightsalmon
830xb1274527, 0x1427914b, 0x38000000, 0x0020b2aa, // lightseagreen
840xb1274527, 0x2f22654a, 0x0087cefa, // lightskyblue
850xb1274527, 0x303429e5, 0x07200000, 0x00778899, // lightslategray
860xb1274527, 0x50a56099, 0x54a00000, 0x00b0c4de, // lightsteelblue
870xb1274533, 0x158c7dc0, 0x00ffffe0, // lightyellow
880xb12d2800, 0x0000ff00, // lime
890xb12d29e5, 0x14ae0000, 0x0032cd32, // limegreen
900xb12e2b80, 0x00faf0e6, // linen
910xb4272ba9, 0x04000000, 0x00ff00ff, // magenta
920xb4327bdc, 0x00800000, // maroon
930xb4a44d5b, 0x06350b43, 0x492e2800, 0x0066cdaa, // mediumaquamarine
940xb4a44d5b, 0x09952800, 0x000000cd, // mediumblue
950xb4a44d5b, 0x3e434248, 0x00ba55d3, // mediumorchid
960xb4a44d5b, 0x42b2830a, 0x009370db, // mediumpurple
970xb4a44d5b, 0x4ca13c8b, 0x15c00000, 0x003cb371, // mediumseagreen
980xb4a44d5b, 0x4d81a145, 0x32a50000, 0x007b68ee, // mediumslateblue
990xb4a44d5b, 0x4e124b8f, 0x1e452b80, 0x0000fa9a, // mediumspringgreen
1000xb4a44d5b, 0x52b28d5f, 0x26650000, 0x0048d1cc, // mediumturquoise
1010xb4a44d5b, 0x592f6169, 0x48a40000, 0x00c71585, // mediumvioletred
1020xb524724f, 0x2282654a, 0x00191970, // midnightblue
1030xb52ea0e5, 0x142d0000, 0x00f5fffa, // mintcream
1040xb533a665, 0x3e650000, 0x00ffe4e1, // mistyrose
1050xb5e31867, 0x25c00000, 0x00ffe4b5, // moccasin
1060xb8360a9f, 0x5d09a140, 0x00ffdead, // navajowhite
1070xb836c800, 0x00000080, // navy
1080xbd846047, 0x14000000, 0x00fdf5e6, // oldlace
1090xbd89b140, 0x00808000, // olive
1100xbd89b149, 0x48220000, 0x006b8e23, // olivedrab
1110xbe4171ca, 0x00ffa500, // orange
1120xbe4171cb, 0x48a40000, 0x00ff4500, // orangered
1130xbe434248, 0x00da70d6, // orchid
1140xc02c29df, 0x3085749f, 0x10000000, 0x00eee8aa, // palegoldenrod
1150xc02c29e5, 0x14ae0000, 0x0098fb98, // palegreen
1160xc02c2d2b, 0x4a357a67, 0x14000000, 0x00afeeee, // paleturquoise
1170xc02c2d93, 0x3d85a48b, 0x10000000, 0x00db7093, // palevioletred
1180xc0300e43, 0x5d098000, 0x00ffefd5, // papayawhip
1190xc0a11a21, 0x54c60000, 0x00ffdab9, // peachpuff
1200xc0b2a800, 0x00cd853f, // peru
1210xc12e5800, 0x00ffc0cb, // pink
1220xc1956800, 0x00dda0dd, // plum
1230xc1f72165, 0x09952800, 0x00b0e0e6, // powderblue
1240xc2b2830a, 0x00800080, // purple
1250xc8a40000, 0x00ff0000, // red
1260xc9f3c8a5, 0x3eee0000, 0x00bc8f8f, // rosybrown
1270xc9f90b05, 0x32a50000, 0x004169e1, // royalblue
1280xcc24230b, 0x0a4fbb80, 0x008b4513, // saddlebrown
1290xcc2c6bdc, 0x00fa8072, // salmon
1300xcc2e2645, 0x49f77000, 0x00f4a460, // sandybrown
1310xcca13c8b, 0x15c00000, 0x002e8b57, // seagreen
1320xcca19a0b, 0x31800000, 0x00fff5ee, // seashell
1330xcd257382, 0x00a0522d, // sienna
1340xcd2cb164, 0x00c0c0c0, // silver
1350xcd79132b, 0x14000000, 0x0087ceeb, // skyblue
1360xcd81a145, 0x32a50000, 0x006a5acd, // slateblue
1370xcd81a14f, 0x48390000, 0x00708090, // slategray
1380xcdcfb800, 0x00fffafa, // snow
1390xce124b8f, 0x1e452b80, 0x0000ff7f, // springgreen
1400xce852b05, 0x32a50000, 0x004682b4, // steelblue
1410xd02e0000, 0x00d2b48c, // tan
1420xd0a16000, 0x00008080, // teal
1430xd1099d19, 0x14000000, 0x00d8bfd8, // thistle
1440xd1ed0d1e, 0x00ff6347, // tomato
1450xd2b28d5f, 0x26650000, 0x0040e0d0, // turquoise
1460xd92f6168, 0x00ee82ee, // violet
1470xdd050d00, 0x00f5deb3, // wheat
1480xdd09a140, 0x00ffffff, // white
1490xdd09a167, 0x35eb2800, 0x00f5f5f5, // whitesmoke
1500xe4ac63ee, 0x00ffff00, // yellow
1510xe4ac63ef, 0x1e452b80, 0x009acd32 // yellowgreen
152}; // original = 2505 : replacement = 1616
153
154
155const char* SkParse::FindNamedColor(const char* name, size_t len, SkColor* color) {
156 const char* namePtr = name;
157 unsigned int sixMatches[4];
158 unsigned int* sixMatchPtr = sixMatches;
159 bool first = true;
160 bool last = false;
161 char ch;
162 do {
163 unsigned int sixMatch = 0;
164 for (int chIndex = 0; chIndex < 6; chIndex++) {
165 sixMatch <<= 5;
166 ch = *namePtr | 0x20;
167 if (ch < 'a' || ch > 'z')
168 ch = 0;
169 else {
170 ch = ch - 'a' + 1;
171 namePtr++;
172 }
173 sixMatch |= ch ; // turn 'A' (0x41) into 'a' (0x61);
174 }
175 sixMatch <<= 1;
176 sixMatch |= 1;
177 if (first) {
178 sixMatch |= 0x80000000;
179 first = false;
180 }
181 ch = *namePtr | 0x20;
182 last = ch < 'a' || ch > 'z';
183 if (last)
184 sixMatch &= ~1;
185 len -= 6;
186 *sixMatchPtr++ = sixMatch;
187 } while (last == false && len > 0);
188 const int colorNameSize = sizeof(gColorNames) / sizeof(unsigned int);
189 int lo = 0;
190 int hi = colorNameSize - 3; // back off to beginning of yellowgreen
191 while (lo <= hi) {
192 int mid = (hi + lo) >> 1;
193 while ((int) gColorNames[mid] >= 0)
194 --mid;
195 sixMatchPtr = sixMatches;
196 while (gColorNames[mid] == *sixMatchPtr) {
197 ++mid;
198 if ((*sixMatchPtr & 1) == 0) { // last
199 *color = gColorNames[mid] | 0xFF000000;
200 return namePtr;
201 }
202 ++sixMatchPtr;
203 }
204 int sixMask = *sixMatchPtr & ~0x80000000;
205 int midMask = gColorNames[mid] & ~0x80000000;
206 if (sixMask > midMask) {
207 lo = mid + 2; // skip color
208 while ((int) gColorNames[lo] >= 0)
209 ++lo;
210 } else if (hi == mid)
211 return nullptr;
212 else
213 hi = mid;
214 }
215 return nullptr;
216}
217
218// !!! move to char utilities
219//static int count_separators(const char* str, const char* sep) {
220// char c;
221// int separators = 0;
222// while ((c = *str++) != '\0') {
223// if (strchr(sep, c) == nullptr)
224// continue;
225// do {
226// if ((c = *str++) == '\0')
227// goto goHome;
228// } while (strchr(sep, c) != nullptr);
229// separators++;
230// }
231//goHome:
232// return separators;
233//}
234
235static inline unsigned nib2byte(unsigned n)
236{
237 SkASSERT((n & ~0xF) == 0);
238 return (n << 4) | n;
239}
240
241const char* SkParse::FindColor(const char* value, SkColor* colorPtr) {
242 unsigned int oldAlpha = SkColorGetA(*colorPtr);
243 if (value[0] == '#') {
244 uint32_t hex;
245 const char* end = SkParse::FindHex(value + 1, &hex);
246// SkASSERT(end);
247 if (end == nullptr)
248 return end;
249 size_t len = end - value - 1;
250 if (len == 3 || len == 4) {
251 unsigned a = len == 4 ? nib2byte(hex >> 12) : oldAlpha;
252 unsigned r = nib2byte((hex >> 8) & 0xF);
253 unsigned g = nib2byte((hex >> 4) & 0xF);
254 unsigned b = nib2byte(hex & 0xF);
255 *colorPtr = SkColorSetARGB(a, r, g, b);
256 return end;
257 } else if (len == 6 || len == 8) {
258 if (len == 6)
259 hex |= oldAlpha << 24;
260 *colorPtr = hex;
261 return end;
262 } else {
263// SkASSERT(0);
264 return nullptr;
265 }
266// } else if (strchr(value, ',')) {
267// SkScalar array[4];
268// int count = count_separators(value, ",") + 1; // !!! count commas, add 1
269// SkASSERT(count == 3 || count == 4);
270// array[0] = SK_Scalar1 * 255;
271// const char* end = SkParse::FindScalars(value, &array[4 - count], count);
272// if (end == nullptr)
273// return nullptr;
274 // !!! range check for errors?
275// *colorPtr = SkColorSetARGB(SkScalarRoundToInt(array[0]), SkScalarRoundToInt(array[1]),
276// SkScalarRoundToInt(array[2]), SkScalarRoundToInt(array[3]));
277// return end;
278 } else
279 return FindNamedColor(value, strlen(value), colorPtr);
280}
281