diff options
Diffstat (limited to 'includes/external/addressbook/node_modules/chardet/lib/encoding/utf8.js')
-rw-r--r-- | includes/external/addressbook/node_modules/chardet/lib/encoding/utf8.js | 72 |
1 files changed, 72 insertions, 0 deletions
diff --git a/includes/external/addressbook/node_modules/chardet/lib/encoding/utf8.js b/includes/external/addressbook/node_modules/chardet/lib/encoding/utf8.js new file mode 100644 index 0000000..9976a9b --- /dev/null +++ b/includes/external/addressbook/node_modules/chardet/lib/encoding/utf8.js @@ -0,0 +1,72 @@ +"use strict"; +var __importDefault = (this && this.__importDefault) || function (mod) { + return (mod && mod.__esModule) ? mod : { "default": mod }; +}; +Object.defineProperty(exports, "__esModule", { value: true }); +const match_1 = __importDefault(require("../match")); +class Utf8 { + name() { + return 'UTF-8'; + } + match(det) { + let hasBOM = false, numValid = 0, numInvalid = 0, trailBytes = 0, confidence; + const input = det.rawInput; + if (det.rawLen >= 3 && + (input[0] & 0xff) == 0xef && + (input[1] & 0xff) == 0xbb && + (input[2] & 0xff) == 0xbf) { + hasBOM = true; + } + for (let i = 0; i < det.rawLen; i++) { + const b = input[i]; + if ((b & 0x80) == 0) + continue; + if ((b & 0x0e0) == 0x0c0) { + trailBytes = 1; + } + else if ((b & 0x0f0) == 0x0e0) { + trailBytes = 2; + } + else if ((b & 0x0f8) == 0xf0) { + trailBytes = 3; + } + else { + numInvalid++; + if (numInvalid > 5) + break; + trailBytes = 0; + } + for (;;) { + i++; + if (i >= det.rawLen) + break; + if ((input[i] & 0xc0) != 0x080) { + numInvalid++; + break; + } + if (--trailBytes == 0) { + numValid++; + break; + } + } + } + confidence = 0; + if (hasBOM && numInvalid == 0) + confidence = 100; + else if (hasBOM && numValid > numInvalid * 10) + confidence = 80; + else if (numValid > 3 && numInvalid == 0) + confidence = 100; + else if (numValid > 0 && numInvalid == 0) + confidence = 80; + else if (numValid == 0 && numInvalid == 0) + confidence = 10; + else if (numValid > numInvalid * 10) + confidence = 25; + else + return null; + return (0, match_1.default)(det, this, confidence); + } +} +exports.default = Utf8; +//# sourceMappingURL=utf8.js.map
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