repoindex/alpm/package.cpp

#include "package.h"
#include "database.h"

#include <QJsonObject>
#include <QJsonValue>
#include <QJsonArray>
#include <QVariant>

using namespace std;
using namespace ChronoUtilities;

namespace PackageManagement {

/*!
 * \cond
 */

inline QString qstr(const char *str)
{
    return QString::fromLocal8Bit(str);
}

inline QJsonArray qjarry(StringList list)
{
    QJsonArray jsonArray;
    for(const char *str : list) {
        jsonArray << qstr(str);
    }
    return jsonArray;
}

inline QJsonArray qjarry(DependencyList list)
{
    QJsonArray jsonArray;
    for(alpm_depend_t *dep : list) {
        QJsonObject depObj;
        depObj.insert(QStringLiteral("name"), dep->name);
        depObj.insert(QStringLiteral("desc"), dep->desc);
        depObj.insert(QStringLiteral("ver"), dep->version);
        switch(dep->mod) {
        case ALPM_DEP_MOD_ANY:
            depObj.insert(QStringLiteral("mod"), QStringLiteral("any"));
            break;
        case ALPM_DEP_MOD_EQ:
            depObj.insert(QStringLiteral("mod"), QStringLiteral("eq"));
            break;
        case ALPM_DEP_MOD_GE:
            depObj.insert(QStringLiteral("mod"), QStringLiteral("ge"));
            break;
        case ALPM_DEP_MOD_LE:
            depObj.insert(QStringLiteral("mod"), QStringLiteral("le"));
            break;
        case ALPM_DEP_MOD_GT:
            depObj.insert(QStringLiteral("mod"), QStringLiteral("gt"));
            break;
        case ALPM_DEP_MOD_LT:
            depObj.insert(QStringLiteral("mod"), QStringLiteral("lt"));
            break;
        }
        jsonArray << depObj;
    }
    return jsonArray;
}

inline QJsonArray qjarry(_alpm_pkgvalidation_t validation)
{
    QJsonArray jsonArray;
    if(validation & 0x1) {
        jsonArray << QStringLiteral("none");
    }
    if(validation & 0x2) {
        jsonArray << QStringLiteral("MD5");
    }
    if(validation & 0x4) {
        jsonArray << QStringLiteral("SHA256");
    }
    if(validation & 0x8) {
        jsonArray << QStringLiteral("signature");
    }
    if(jsonArray.empty()) {
        jsonArray << QStringLiteral("unknown");
    }
    return jsonArray;
}

/*!
 * \endcond
 */

/*!
 * \brief The PackageVersion class helps parsing package versions.
 */

/*!
 * \brief Constructs a new PackageVersion instance from the specified \a versionStr.
 */
PackageVersion::PackageVersion(const QString &versionStr) :
    PackageVersion(versionStr.toLocal8Bit().data())
{}

/*!
 * \brief Constructs a new PackageVersion instance from the specified \a versionStr.
 */
PackageVersion::PackageVersion(const char *versionStr)
{
    // determine start offsets of version and release
    const char *versionBeg = nullptr, *releaseBeg = nullptr;
    for(const char *i = versionStr; ; ++i) {
        switch(*i) {
        case 0:
            goto terminationFound;
        case ':':
            if(!versionBeg && !releaseBeg) {
                versionBeg = i + 1;
            }
            break;
        case '-':
            releaseBeg = i + 1;
            break;
        default: ;
        }
    }
    terminationFound:
    if(versionBeg) {
        // epoch present
        epoch = QString::fromLocal8Bit(versionStr, versionBeg - versionStr - 1);
        if(releaseBeg) {
            // release present
            version = QString::fromLocal8Bit(versionBeg, releaseBeg - versionBeg - 1);
            release = QString::fromLocal8Bit(releaseBeg);
        } else {
            version = QString::fromLocal8Bit(versionBeg);
        }
    } else {
        // epoch not present
        if(releaseBeg) {
            // release present
            version = QString::fromLocal8Bit(versionStr, releaseBeg - versionStr - 1);
            release = QString::fromLocal8Bit(releaseBeg);
        } else {
            version = QString::fromLocal8Bit(versionStr);
        }
    }
}

/*!
 * \brief Compares two version parts.
 * \returns Returns 1 if part1 is newer then part2, -1 if part2 is newer then part1 and 0 if both parts are equal.
 */
PackageVersionPartComparsion PackageVersion::compareParts(const QString &part1, const QString &part2)
{
    static const QRegExp nonAlphanumericPattern(QStringLiteral("[^a-zA-Z\\d:öäüÖÄÜß]"));
    int part1Pos = 0, part2Pos = 0, part1End, part2End;
    while(true) {
        // determine current segments
        part1End = part1.indexOf(nonAlphanumericPattern, part1Pos);
        part2End = part2.indexOf(nonAlphanumericPattern, part2Pos);
        auto segment1 = part1.midRef(part1Pos, part1End);
        auto segment2 = part2.midRef(part2Pos, part2End);
        // compare current segments
        int digit1 = segment1.size();
        int digit2 = segment2.size();
        const auto *i1 = segment1.cbegin(), *e1 = segment1.cend();
        const auto *i2 = segment2.cbegin(), *e2 = segment2.cend();
        // trim leading zeros
        for(; i1 < e1 && *i1 == QLatin1Char('0'); ++i1, --digit1);
        for(; i2 < e2 && *i2 == QLatin1Char('0'); ++i2, --digit2);
        if(digit1 > digit2) {
            // segment 1 has more digits -> newer
            return PackageVersionPartComparsion::Newer;
        } else if (digit2 > digit1) {
            // segment 2 has more digits -> newer
            return PackageVersionPartComparsion::Older;
        } else {
            for(; i1 < e1 && i2 < e2; ++i1, ++i2) {
                if(*i1 > *i2) {
                    // segment 1 digit has higher value -> newer
                    return PackageVersionPartComparsion::Newer;
                } else if(*i2 > *i1) {
                    // segment 2 digit has higher value -> newer
                    return PackageVersionPartComparsion::Older;
                }
            }
        }
        // this segment is equal, look for the next segment
        if(part1End >= 0 && part2End >= 0) {
            // there is another segment in both parts
            part1Pos = part1End + 1;
            part2Pos = part2End + 1;
        } else if(part1End >= 0) {
            // only part 1 has another segment -> it is more specific and hence considered newer
            return PackageVersionPartComparsion::Newer;
        } else if(part2End >= 0) {
            // only part 2 has another segment -> it is more specific and hence considered newer
            return PackageVersionPartComparsion::Older;
        } else {
            // none of the parts has another segment -> parts are equal
            return PackageVersionPartComparsion::Equal;
        }
    }
}

/*!
 * \brief Compares this version with another version.
 *
 * This method distinguishes between software upgrades and package releases. See Alpm::PackageVersionComparsion enum.
 */
PackageVersionComparsion PackageVersion::compare(const PackageVersion &other) const
{
    if(!epoch.isEmpty() || !other.epoch.isEmpty()) {
        switch(compareParts(other.epoch, epoch)) {
        case PackageVersionPartComparsion::Newer: return PackageVersionComparsion::SoftwareUpgrade;
        case PackageVersionPartComparsion::Older: return PackageVersionComparsion::NewerThenSyncVersion;
        case PackageVersionPartComparsion::Equal: ;
        }
    }
    switch(compareParts(other.version, version)) {
    case PackageVersionPartComparsion::Newer: return PackageVersionComparsion::SoftwareUpgrade;
    case PackageVersionPartComparsion::Older: return PackageVersionComparsion::NewerThenSyncVersion;
    case PackageVersionPartComparsion::Equal: ;
    }
    switch(compareParts(other.release, release)) {
    case PackageVersionPartComparsion::Newer: return PackageVersionComparsion::PackageUpgradeOnly;
    case PackageVersionPartComparsion::Older: return PackageVersionComparsion::NewerThenSyncVersion;
    case PackageVersionPartComparsion::Equal: ;
    }
    return PackageVersionComparsion::Equal;
}

/*!
 * \brief The AurPackage class holds information about AUR packages. It allows to convert the information
 * to JSON objects used by the network classes and the web interface.
 */

/*!
 * \brief Creates a new instance from the specified "AurJson value".
 */
AurPackage::AurPackage(const QJsonValue &aurJsonValue) :
    AurPackage()
{
    QJsonObject obj = aurJsonValue.toObject();
    m_id = obj.value(QStringLiteral("ID")).toInt(-1);
    m_categoryId = obj.value(QStringLiteral("CategoryID")).toInt(-1);
    m_name = obj.value(QStringLiteral("Name")).toString();
    m_version = obj.value(QStringLiteral("Version")).toString();
    m_description = obj.value(QStringLiteral("Description")).toString();
    m_upstreamUrl = obj.value(QStringLiteral("URL")).toString();
    m_votes = obj.value(QStringLiteral("NumVotes")).toInt(0);
    m_outOfDate = DateTime::fromTimeStamp(obj.value(QStringLiteral("OutOfDate")).toInt());
    m_maintainer = obj.value(QStringLiteral("Maintainer")).toString();
    m_firstSubmitted = DateTime::fromTimeStamp(obj.value(QStringLiteral("FirstSubmitted")).toInt());
    m_lastModified = DateTime::fromTimeStamp(obj.value(QStringLiteral("LastModified")).toInt());
    m_license = obj.value(QStringLiteral("License")).toString();
    m_tarUrl = obj.value(QStringLiteral("URLPath")).toString();
}



/*!
 * \brief Returns basic information about the packages as JSON object.
 */
QJsonObject AurPackage::basicInfo(bool includeRepoAndName) const
{
    QJsonObject packageInfo;
    if(includeRepoAndName) {
        packageInfo.insert(QStringLiteral("repo"), QStringLiteral("aur"));
        packageInfo.insert(QStringLiteral("name"), name());
    }
    packageInfo.insert(QStringLiteral("arch"), QStringLiteral("n.a."));
    packageInfo.insert(QStringLiteral("ver"), version());
    packageInfo.insert(QStringLiteral("desc"), description());
    packageInfo.insert(QStringLiteral("bdate"), QStringLiteral("n.a."));
    packageInfo.insert(QStringLiteral("flagdate"), outOfDate().isNull() ? QStringLiteral("none") : qstr(outOfDate().toString().data()));
    return packageInfo;
}

/*!
 * \brief Returns full information about the package as JSON object.
 */
QJsonObject AurPackage::fullInfo(bool includeRepoAndName) const
{
    QJsonObject packageInfo;
    if(includeRepoAndName) {
        packageInfo.insert(QStringLiteral("repo"), QStringLiteral("aur"));
        packageInfo.insert(QStringLiteral("name"), name());
    }
    packageInfo.insert(QStringLiteral("arch"), QStringLiteral("n.a."));
    packageInfo.insert(QStringLiteral("ver"), version());
    packageInfo.insert(QStringLiteral("desc"), description());
    packageInfo.insert(QStringLiteral("bdate"), QStringLiteral("n.a."));
    packageInfo.insert(QStringLiteral("idate"), QStringLiteral("n.a."));
    packageInfo.insert(QStringLiteral("isize"), QStringLiteral("n.a."));
    packageInfo.insert(QStringLiteral("url"), upstreamUrl());
    packageInfo.insert(QStringLiteral("lic"), license());
    packageInfo.insert(QStringLiteral("grp"), QStringLiteral("TODO"));
    packageInfo.insert(QStringLiteral("prov"), QStringLiteral("TODO"));
    packageInfo.insert(QStringLiteral("optd"), QStringLiteral("TODO"));
    packageInfo.insert(QStringLiteral("deps"), QStringLiteral("TODO"));
    packageInfo.insert(QStringLiteral("requ"), QStringLiteral("TODO"));
    packageInfo.insert(QStringLiteral("optf"), QStringLiteral("TODO"));
    packageInfo.insert(QStringLiteral("conf"), QStringLiteral("TODO"));
    packageInfo.insert(QStringLiteral("repl"), QStringLiteral("TODO"));
    packageInfo.insert(QStringLiteral("pack"), QStringLiteral("n.a."));
    packageInfo.insert(QStringLiteral("expl"), QStringLiteral("n.a."));
    packageInfo.insert(QStringLiteral("scri"), QStringLiteral("TODO"));
    packageInfo.insert(QStringLiteral("sig"), QStringLiteral("TODO"));
    packageInfo.insert(QStringLiteral("file"), QStringLiteral("n.a."));
    return packageInfo;
}

/*!
 * \brief The AlpmPackage class helps getting information about ALPM packages. It allows to convert the
 * information to JSON objects used by the network classes and the web interface.
 */

/*!
 * \brief Returns basic information about the packages as JSON object.
 */
QJsonObject AlpmPackage::basicInfo(bool includeRepoAndName) const
{
    QJsonObject packageInfo;
    if(includeRepoAndName) {
        packageInfo.insert(QStringLiteral("repo"), qstr(AlpmDataBase(associatedDatabase()).name()));
        packageInfo.insert(QStringLiteral("name"), qstr(name()));
    }
    packageInfo.insert(QStringLiteral("arch"), qstr(architecture()));
    packageInfo.insert(QStringLiteral("ver"), qstr(version()));
    packageInfo.insert(QStringLiteral("desc"), qstr(description()));
    packageInfo.insert(QStringLiteral("bdate"), qstr(buildDate().toString().c_str()));
    packageInfo.insert(QStringLiteral("flagdate"), QStringLiteral("n.a."));
    return packageInfo;
}

/*!
 * \brief Returns full information about the package as JSON object.
 */
QJsonObject AlpmPackage::fullInfo(bool includeRepoAndName) const
{
    QJsonObject packageInfo;
    if(includeRepoAndName) {
        packageInfo.insert(QStringLiteral("repo"), qstr(AlpmDataBase(associatedDatabase()).name()));
        packageInfo.insert(QStringLiteral("name"), qstr(name()));
    }
    packageInfo.insert(QStringLiteral("arch"), qstr(architecture()));
    packageInfo.insert(QStringLiteral("ver"), qstr(version()));
    packageInfo.insert(QStringLiteral("desc"), qstr(description()));
    packageInfo.insert(QStringLiteral("bdate"), qstr(buildDate().toString().c_str()));
    packageInfo.insert(QStringLiteral("idate"), qstr(installDate().toString().c_str()));
    packageInfo.insert(QStringLiteral("isize"), static_cast<long long int>(installedSize()));
    packageInfo.insert(QStringLiteral("url"), qstr(upstreamUrl()));
    packageInfo.insert(QStringLiteral("lic"), qjarry(licenses()));
    packageInfo.insert(QStringLiteral("grp"), qjarry(groups()));
    packageInfo.insert(QStringLiteral("prov"), qjarry(provides()));
    packageInfo.insert(QStringLiteral("optd"), qjarry(optionalDependencies()));
    packageInfo.insert(QStringLiteral("deps"), qjarry(dependencies()));
    packageInfo.insert(QStringLiteral("requ"), qjarry(requiredBy()));
    packageInfo.insert(QStringLiteral("optf"), qjarry(optionalFor()));
    packageInfo.insert(QStringLiteral("conf"), qjarry(conflicts()));
    packageInfo.insert(QStringLiteral("repl"), qjarry(replaces()));
    packageInfo.insert(QStringLiteral("pack"), qstr(packager()));
    packageInfo.insert(QStringLiteral("expl"), installReason() == ALPM_PKG_REASON_EXPLICIT);
    packageInfo.insert(QStringLiteral("scri"), hasInstallScript());
    packageInfo.insert(QStringLiteral("sig"), qjarry(validation()));
    packageInfo.insert(QStringLiteral("file"), qstr(fileName()));
    QJsonArray fileInfos;
    alpm_filelist_t *fileList = files();
    for(alpm_file_t *file = fileList->files, *end = fileList->files + fileList->count; file != end; ++file) {
        QJsonObject fileInfo;
        fileInfo.insert(QStringLiteral("name"), qstr(file->name));
        if(file->mode) {
            fileInfo.insert(QStringLiteral("mode"), static_cast<int>(file->mode));
        }
        if(file->size) {
            fileInfo.insert(QStringLiteral("size"), static_cast<int>(file->size));
        }
        fileInfos << fileInfo;
    }
    packageInfo.insert(QStringLiteral("files"), fileInfos);
    return packageInfo;
}

}