firefox-main/netwerk/base/ContentRange.cpp (file symbol)

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/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "ContentRange.h"
#include "nsContentUtils.h"
mozilla::net::ContentRange::ContentRange(
const nsContentUtils::ParsedRange& aRangeHeader, uint64_t aSize) {
// Sanity check: ParseSingleRangeRequest should handle these two cases.
// If rangeEndValue and rangeStartValue are null, then return failure.
MOZ_ASSERT(aRangeHeader.Start().isSome() || aRangeHeader.End().isSome());
// If rangeStartValue and rangeEndValue are numbers, and rangeStartValue
// is greater than rangeEndValue, then return failure.
MOZ_ASSERT(aRangeHeader.Start().isNothing() ||
aRangeHeader.End().isNothing() ||
*aRangeHeader.Start() <= *aRangeHeader.End());
// If rangeStart is null:
if (aRangeHeader.Start().isNothing()) {
// Set rangeStart to fullLength − rangeEnd.
mStart = aSize - *aRangeHeader.End();
// Set rangeEnd to rangeStart + rangeEnd − 1.
mEnd = mStart + *aRangeHeader.End() - 1;
// Otherwise:
} else {
// If rangeStart is greater than or equal to fullLength, then return a
// network error.
if (*aRangeHeader.Start() >= aSize) {
return;
}
mStart = *aRangeHeader.Start();
// If rangeEnd is null or rangeEnd is greater than or equal to fullLength,
// then set rangeEnd to fullLength − 1.
if (aRangeHeader.End().isNothing() || *aRangeHeader.End() >= aSize) {
mEnd = aSize - 1;
} else {
mEnd = *aRangeHeader.End();
}
}
mSize = aSize;
}
void mozilla::net::ContentRange::AsHeader(nsACString& aOutString) const {
aOutString.Assign("bytes "_ns);
aOutString.AppendInt(mStart);
aOutString.AppendLiteral("-");
aOutString.AppendInt(mEnd);
aOutString.AppendLiteral("/");
aOutString.AppendInt(mSize);
}