Function packageMetadataMatches

Tools/SC-package.h:125–184

}

[[nodiscard]] inline Result packageMetadataMatches(const Download& download, const Package& package, bool& matches)
{
    matches = false;
    if (download.isGitClone)
    {
        matches = true;
        return Result(true);
    }

    FileSystem fs;
    SC_TRY(fs.init("."));
    if (not fs.existsAndIsFile(package.packageLocalTxt.view()))
    {
        return Result(true);
    }

    String metadata;
    SC_TRY(readFileIntoString(package.packageLocalTxt.view(), metadata));
    StringView metadataView = metadata.view();

    // Old sidecars are MD5-only and should trigger a fresh install.
    if (metadataView.containsString("SC_PACKAGE_MD5="))
    {
        return Result(true);
    }

    StringView          urlValue;
    StringView          hashValue;
    StringViewTokenizer lines(metadataView);
    while (lines.tokenizeNextLine())
    {
        StringView line = lines.component.trimWhiteSpaces();
        if (line.startsWith("SC_PACKAGE_URL="))
        {
            SC_TRY(line.splitAfter("SC_PACKAGE_URL=", urlValue));
        }
        else if (line.startsWith("SC_PACKAGE_HASH="))
        {
            SC_TRY(line.splitAfter("SC_PACKAGE_HASH=", hashValue));
        }
    }

    if (urlValue != download.url.view())
    {
        return Result(true);
    }

    if (download.expectedHash.isEmpty())
    {
        matches = hashValue.isEmpty();
        return Result(true);
    }

    SmallString<80> expectedMetadataHash;
    auto            builder = StringBuilder::create(expectedMetadataHash);
    SC_TRY(builder.append("{}:{}", packageHashName(download.hashType), download.expectedHash.view()));
    builder.finalize();
    matches = hashValue == expectedMetadataHash.view();