adaptive-expressions

/** * @module adaptive-expressions */ /** * Copyright (c) Microsoft Corporation. All rights reserved. * Licensed under the MIT License. */ enum State { None, LowerD1, LowerD2, LowerD3, LowerD4, LowerF1, LowerF2, LowerF3, CapitalF1, CapitalF2, CapitalF3, LowerG, LowerH1, LowerH2, CapitalH1, CapitalH2, CapitalK, LowerM1, LowerM2, CapitalM1, CapitalM2, CapitalM3, CapitalM4, LowerS1, LowerS2, LowerT1, LowerT2, LowerY1, LowerY2, LowerY3, LowerY4, LowerZ1, LowerZ2, LowerZ3, InSingleQuoteLiteral, InDoubleQuoteLiteral, EscapeSequence, } /** * Convert a CSharp style datetime format string to a Day.js style datetime format string. Ref: https://docs.microsoft.com/en-us/dotnet/standard/base-types/custom-date-and-time-format-strings * * @param fmtString A CSharp style datetime format string. Ref: https://day.js.org/docs/en/display/format * @returns A Momengt.js style datetime format string. */ export function convertCSharpDateTimeToDayjs(fmtString: string): string { let fmtResult = ''; let fmtState: any = State.None; let lTokenBuffer = ''; if (fmtString.length === 0) { return fmtResult; } if (fmtString.length === 1) { switch (fmtString) { case 'R': case 'r': throw Error('RFC 1123 not supported in Day.js'); case 'O': case 'o': fmtString = 'YYYY-MM-DDTHH:mm:ss.SSS0000Z'; break; case 'U': throw new Error('Universal Fulll Format not supported in Day.js'); case 'u': throw new Error('Universal Sortable Format not supported in Day.js'); } } const changeState = (newState): void => { switch (fmtState) { case State.LowerD1: fmtResult += 'D'; break; case State.LowerD2: fmtResult += 'DD'; break; case State.LowerD3: fmtResult += 'ddd'; break; case State.LowerD4: fmtResult += 'dddd'; break; case State.LowerF1: case State.CapitalF1: throw Error('S not supported in Day.js'); case State.LowerF2: case State.CapitalF2: throw Error('SS not supported in Day.js'); case State.LowerF3: case State.CapitalF3: fmtResult += 'SSS'; break; case State.LowerG: throw Error('Era not supported in Day.js'); case State.LowerH1: fmtResult += 'h'; break; case State.LowerH2: fmtResult += 'hh'; break; case State.CapitalH1: fmtResult += 'H'; break; case State.CapitalH2: fmtResult += 'HH'; break; case State.LowerM1: fmtResult += 'm'; break; case State.LowerM2: fmtResult += 'mm'; break; case State.CapitalM1: fmtResult += 'M'; break; case State.CapitalM2: fmtResult += 'MM'; break; case State.CapitalM3: fmtResult += 'MMM'; break; case State.CapitalM4: fmtResult += 'MMMM'; break; case State.LowerS1: fmtResult += 's'; break; case State.LowerS2: fmtResult += 'ss'; break; case State.LowerT1: case State.LowerT2: fmtResult += 'A'; break; case State.LowerY1: case State.LowerY2: fmtResult += 'YY'; break; case State.LowerY3: case State.LowerY4: fmtResult += 'YYYY'; break; case State.LowerZ1: case State.LowerZ2: fmtResult += 'ZZ'; break; case State.LowerZ3: fmtResult += 'Z'; break; case State.InSingleQuoteLiteral: case State.InDoubleQuoteLiteral: case State.EscapeSequence: for (const lCharacter of lTokenBuffer) { fmtResult += lCharacter; } break; } lTokenBuffer = ''; fmtState = newState; }; for (const character of fmtString) { if (fmtState === State.EscapeSequence) { lTokenBuffer += character; changeState(State.None); } else if (fmtState === State.InDoubleQuoteLiteral) { if (character === '`') { changeState(State.None); } else { lTokenBuffer += character; } } else if (fmtState === State.InSingleQuoteLiteral) { if (character === "'") { changeState(State.None); } else { lTokenBuffer += character; } } else { switch (character) { case 'd': switch (fmtState) { case State.LowerD1: fmtState = State.LowerD2; break; case State.LowerD2: fmtState = State.LowerD3; break; case State.LowerD3: fmtState = State.LowerD4; break; case State.LowerD4: break; default: changeState(State.LowerD1); break; } break; case 'f': switch (fmtState) { case State.LowerF1: fmtState = State.LowerF2; break; case State.LowerF2: fmtState = State.LowerF3; break; case State.LowerF3: break; default: changeState(State.LowerF1); break; } break; case 'F': switch (fmtState) { case State.CapitalF1: fmtState = State.CapitalF2; break; case State.CapitalF2: fmtState = State.CapitalF3; break; case State.CapitalF3: break; default: changeState(State.CapitalF1); break; } break; case 'g': switch (fmtState) { case State.LowerG: break; default: changeState(State.LowerG); break; } break; case 'h': switch (fmtState) { case State.LowerH1: fmtState = State.LowerH2; break; case State.LowerH2: break; default: changeState(State.LowerH1); break; } break; case 'H': switch (fmtState) { case State.CapitalH1: fmtState = State.CapitalH2; break; case State.CapitalH2: break; default: changeState(State.CapitalH1); break; } break; case 'K': changeState(State.None); fmtResult += 'Z'; break; case 'm': switch (fmtState) { case State.LowerM1: fmtState = State.LowerM2; break; case State.LowerM2: break; default: changeState(State.LowerM1); break; } break; case 'M': switch (fmtState) { case State.CapitalM1: fmtState = State.CapitalM2; break; case State.CapitalM2: fmtState = State.CapitalM3; break; case State.CapitalM3: fmtState = State.CapitalM4; break; case State.CapitalM4: break; default: changeState(State.CapitalM1); break; } break; case 's': switch (fmtState) { case State.LowerS1: fmtState = State.LowerS2; break; case State.LowerS2: break; default: changeState(State.LowerS1); break; } break; case 't': switch (fmtState) { case State.LowerT1: fmtState = State.LowerT2; break; case State.LowerT2: break; default: changeState(State.LowerT1); break; } break; case 'y': switch (fmtState) { case State.LowerY1: fmtState = State.LowerY2; break; case State.LowerY2: fmtState = State.LowerY3; break; case State.LowerY3: fmtState = State.LowerY4; break; case State.LowerY4: break; default: changeState(State.LowerY1); break; } break; case 'z': switch (fmtState) { case State.LowerZ1: fmtState = State.LowerZ2; break; case State.LowerZ2: fmtState = State.LowerZ3; break; case State.LowerZ3: break; default: changeState(State.LowerZ1); break; } break; case ':': changeState(State.None); fmtResult += ':'; break; case '/': changeState(State.None); fmtResult += '/'; break; case '`': changeState(State.InDoubleQuoteLiteral); break; case "'": changeState(State.InSingleQuoteLiteral); break; case '%': changeState(State.None); break; case '\\': changeState(State.EscapeSequence); break; default: changeState(State.None); fmtResult += character; break; } } } if ( fmtState === State.EscapeSequence || fmtState === State.InDoubleQuoteLiteral || fmtState === State.InSingleQuoteLiteral ) { throw Error('Invalid Format String'); } changeState(State.None); return fmtResult; }