void VTTRegion::parseSettingValue(RegionSetting setting, VTTScanner& input) { DEPRECATED_DEFINE_STATIC_LOCAL(const AtomicString, scrollUpValueKeyword, ("up", AtomicString::ConstructFromLiteral)); VTTScanner::Run valueRun = input.collectUntil<isHTMLSpace<UChar>>(); switch (setting) { case Id: { String stringValue = input.extractString(valueRun); if (stringValue.find("-->") == notFound) m_id = stringValue; break; } case Width: { float floatWidth; if (WebVTTParser::parseFloatPercentageValue(input, floatWidth) && parsedEntireRun(input, valueRun)) m_width = floatWidth; else LOG(Media, "VTTRegion::parseSettingValue, invalid Width"); break; } case Height: { int number; if (input.scanDigits(number) && parsedEntireRun(input, valueRun)) m_heightInLines = number; else LOG(Media, "VTTRegion::parseSettingValue, invalid Height"); break; } case RegionAnchor: { FloatPoint anchor; if (WebVTTParser::parseFloatPercentageValuePair(input, ',', anchor) && parsedEntireRun(input, valueRun)) m_regionAnchor = anchor; else LOG(Media, "VTTRegion::parseSettingValue, invalid RegionAnchor"); break; } case ViewportAnchor: { FloatPoint anchor; if (WebVTTParser::parseFloatPercentageValuePair(input, ',', anchor) && parsedEntireRun(input, valueRun)) m_viewportAnchor = anchor; else LOG(Media, "VTTRegion::parseSettingValue, invalid ViewportAnchor"); break; } case Scroll: if (input.scanRun(valueRun, scrollUpValueKeyword)) m_scroll = true; else LOG(Media, "VTTRegion::parseSettingValue, invalid Scroll"); break; case None: break; } input.skipRun(valueRun); }
bool VTTParser::collectTimeStamp(VTTScanner& input, double& timeStamp) { // Collect a WebVTT timestamp (5.3 WebVTT cue timings and settings parsing.) // Steps 1 - 4 - Initial checks, let most significant units be minutes. enum Mode { Minutes, Hours }; Mode mode = Minutes; // Steps 5 - 7 - Collect a sequence of characters that are 0-9. // If not 2 characters or value is greater than 59, interpret as hours. int value1; unsigned value1Digits = input.scanDigits(value1); if (!value1Digits) return false; if (value1Digits != 2 || value1 > 59) mode = Hours; // Steps 8 - 11 - Collect the next sequence of 0-9 after ':' (must be 2 chars). int value2; if (!input.scan(':') || input.scanDigits(value2) != 2) return false; // Step 12 - Detect whether this timestamp includes hours. int value3; if (mode == Hours || input.match(':')) { if (!input.scan(':') || input.scanDigits(value3) != 2) return false; } else { value3 = value2; value2 = value1; value1 = 0; } // Steps 13 - 17 - Collect next sequence of 0-9 after '.' (must be 3 chars). int value4; if (!input.scan('.') || input.scanDigits(value4) != 3) return false; if (value2 > 59 || value3 > 59) return false; // Steps 18 - 19 - Calculate result. timeStamp = (value1 * secondsPerHour) + (value2 * secondsPerMinute) + value3 + (value4 * secondsPerMillisecond); return true; }