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{"version":3,"sources":["../../../src/server/stream-utils/uint8array-helpers.ts"],"sourcesContent":["/**\n * Find the starting index of Uint8Array `b` within Uint8Array `a`.\n */\nexport function indexOfUint8Array(a: Uint8Array, b: Uint8Array) {\n  if (b.length === 0) return 0\n  if (a.length === 0 || b.length > a.length) return -1\n\n  // start iterating through `a`\n  for (let i = 0; i <= a.length - b.length; i++) {\n    let completeMatch = true\n    // from index `i`, iterate through `b` and check for mismatch\n    for (let j = 0; j < b.length; j++) {\n      // if the values do not match, then this isn't a complete match, exit `b` iteration early and iterate to next index of `a`.\n      if (a[i + j] !== b[j]) {\n        completeMatch = false\n        break\n      }\n    }\n\n    if (completeMatch) {\n      return i\n    }\n  }\n\n  return -1\n}\n\n/**\n * Check if two Uint8Arrays are strictly equivalent.\n */\nexport function isEquivalentUint8Arrays(a: Uint8Array, b: Uint8Array) {\n  if (a.length !== b.length) return false\n\n  for (let i = 0; i < a.length; i++) {\n    if (a[i] !== b[i]) return false\n  }\n\n  return true\n}\n\n/**\n * Remove Uint8Array `b` from Uint8Array `a`.\n *\n * If `b` is not in `a`, `a` is returned unchanged.\n *\n * Otherwise, the function returns a new Uint8Array instance with size `a.length - b.length`\n */\nexport function removeFromUint8Array(a: Uint8Array, b: Uint8Array) {\n  const tagIndex = indexOfUint8Array(a, b)\n  if (tagIndex === 0) return a.subarray(b.length)\n  if (tagIndex > -1) {\n    const removed = new Uint8Array(a.length - b.length)\n    removed.set(a.slice(0, tagIndex))\n    removed.set(a.slice(tagIndex + b.length), tagIndex)\n    return removed\n  } else {\n    return a\n  }\n}\n"],"names":["indexOfUint8Array","isEquivalentUint8Arrays","removeFromUint8Array","a","b","length","i","completeMatch","j","tagIndex","subarray","removed","Uint8Array","set","slice"],"mappings":"AAAA;;CAEC;;;;;;;;;;;;;;;;IACeA,iBAAiB;eAAjBA;;IA2BAC,uBAAuB;eAAvBA;;IAiBAC,oBAAoB;eAApBA;;;AA5CT,SAASF,kBAAkBG,CAAa,EAAEC,CAAa;IAC5D,IAAIA,EAAEC,MAAM,KAAK,GAAG,OAAO;IAC3B,IAAIF,EAAEE,MAAM,KAAK,KAAKD,EAAEC,MAAM,GAAGF,EAAEE,MAAM,EAAE,OAAO,CAAC;IAEnD,8BAA8B;IAC9B,IAAK,IAAIC,IAAI,GAAGA,KAAKH,EAAEE,MAAM,GAAGD,EAAEC,MAAM,EAAEC,IAAK;QAC7C,IAAIC,gBAAgB;QACpB,6DAA6D;QAC7D,IAAK,IAAIC,IAAI,GAAGA,IAAIJ,EAAEC,MAAM,EAAEG,IAAK;YACjC,2HAA2H;YAC3H,IAAIL,CAAC,CAACG,IAAIE,EAAE,KAAKJ,CAAC,CAACI,EAAE,EAAE;gBACrBD,gBAAgB;gBAChB;YACF;QACF;QAEA,IAAIA,eAAe;YACjB,OAAOD;QACT;IACF;IAEA,OAAO,CAAC;AACV;AAKO,SAASL,wBAAwBE,CAAa,EAAEC,CAAa;IAClE,IAAID,EAAEE,MAAM,KAAKD,EAAEC,MAAM,EAAE,OAAO;IAElC,IAAK,IAAIC,IAAI,GAAGA,IAAIH,EAAEE,MAAM,EAAEC,IAAK;QACjC,IAAIH,CAAC,CAACG,EAAE,KAAKF,CAAC,CAACE,EAAE,EAAE,OAAO;IAC5B;IAEA,OAAO;AACT;AASO,SAASJ,qBAAqBC,CAAa,EAAEC,CAAa;IAC/D,MAAMK,WAAWT,kBAAkBG,GAAGC;IACtC,IAAIK,aAAa,GAAG,OAAON,EAAEO,QAAQ,CAACN,EAAEC,MAAM;IAC9C,IAAII,WAAW,CAAC,GAAG;QACjB,MAAME,UAAU,IAAIC,WAAWT,EAAEE,MAAM,GAAGD,EAAEC,MAAM;QAClDM,QAAQE,GAAG,CAACV,EAAEW,KAAK,CAAC,GAAGL;QACvBE,QAAQE,GAAG,CAACV,EAAEW,KAAK,CAACL,WAAWL,EAAEC,MAAM,GAAGI;QAC1C,OAAOE;IACT,OAAO;QACL,OAAOR;IACT;AACF","ignoreList":[0]}