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annotate FileDBLink.hpp @ 38:7905fa8a3f1b

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Test for empty string.
author Tom Fredrik Blenning Klaussen <bfg@blenning.no>
date Fri, 07 Sep 2012 13:07:46 +0200
parents 9463c0c22969
children b9515dc35fe4
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1 #ifndef FILEDBLINK
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2 #define FILEDBLINK
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3
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4 #include <QtCore/QCryptographicHash>
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5 #include <QtCore/QDateTime>
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6 #include <QtCore/QFileInfo>
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7
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8 class FileDBLink {
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9 public:
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10 class DBInfo {
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11 public:
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12 DBInfo(const QString& path, qint64 size, const QDateTime& mtime, const QByteArray& hash) : path_(path),
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13 size_(size),
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14 mtime_(mtime),
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15 hash_(hash)
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16 {}
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17 DBInfo() {}
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18
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19 virtual ~DBInfo() {}
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20
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21 const QString& path() const
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22 {
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23 return path_;
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24 }
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25
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26 QString name() const
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27 {
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28 QFileInfo finf(path());
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29 return finf.fileName();
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30 }
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31
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32 quint64 size() const
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33 {
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34 return size_;
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35 }
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36
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37 const QDateTime& mtime() const
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38 {
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39 return mtime_;
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40 }
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41
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42 const QByteArray checksum() const
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43 {
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44 return hash_;
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45 }
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46
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47 virtual QString serialize() const
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48 {
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49 QString size = QString::number(size_);
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50 QString str = path_;
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51 str += ", " + size;
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52 str += ", " + mtime_.toString();
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53 str += ", " + hash_.toHex();
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54 return str;
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55 }
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56
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57 private:
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58 QString path_;
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59 qint64 size_;
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60 QDateTime mtime_;
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61 QByteArray hash_;
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62 };
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63
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64 class ExtendedDBInfo : public DBInfo {
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65 public:
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66 ExtendedDBInfo(const DBInfo& dbinfo, const QString& closestEditPath, int editDistance) : DBInfo(dbinfo), closestEditPath_(closestEditPath), editDistance_(editDistance) {}
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67 ExtendedDBInfo() {}
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68
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69 virtual ~ExtendedDBInfo() {}
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70
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71 virtual QString serialize() const
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72 {
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73 QString dist = QString::number(editDistance_);
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74 QString str = DBInfo::serialize();
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75 str += ", " + closestEditPath_;
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76 str += ", " + dist;
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77 return str;
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78 }
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79
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80 int editDistance() const
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81 {
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82 return editDistance_;
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83 }
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84
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85 private:
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86 QString closestEditPath_;
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87 int editDistance_;
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88 };
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89
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90 static QSharedPointer<DBInfo> computedValue(const QSharedPointer<DBInfo>& info, const QList<QSharedPointer<DBInfo> >&);
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91
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92 static QByteArray computeHash(const QString& path, QCryptographicHash::Algorithm = QCryptographicHash::Sha1);
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93
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94 public:
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95 enum DBStatus { NONE = 0, MTIME_DIFFERENT, SAME};
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96
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97 virtual ~FileDBLink() {}
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98
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99 void updateIfModified(const QString& path);
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100
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101 virtual void addFile(const QString& path, qint64 size, const QDateTime& dtime, const QByteArray& hash) = 0;
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102 virtual void keepOnlyFromPrefix(const QString& prefix, const QStringList& files) = 0;
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103 virtual void deleteFileFromDB(const QString& path) = 0;
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104
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105 void addFile(const QString& path, qint64 size, const QDateTime& dtime);
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106 void addFile(const QFileInfo& fileinfo);
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107
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108 virtual void updateFile(const QString& path, qint64 size, const QDateTime& dtime, const QByteArray& hash) = 0;
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109 void updateFile(const QString& path, qint64 size, const QDateTime& dtime);
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110 void updateFile(const QFileInfo& fileinfo);
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111
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112 virtual bool exists(const QString& path) = 0;
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113 virtual DBStatus existsWithMtime(const QString& path, const QDateTime& mtime) = 0;
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114
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115 virtual const QList<QSharedPointer<DBInfo> > values(const QString& prefix = QString() ) const = 0;
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116 virtual const QList<QSharedPointer<DBInfo> > computedValues(const QString& prefix = QString() ) const;
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117
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118 enum SORTORDER { PATH, SIZE, MTIME, CHECKSUM, EDIT };
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119
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120 virtual const QList<QSharedPointer<DBInfo> > sortOn(const QString& prefix, SORTORDER order, bool extended = false);
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121 };
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122
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123 #endif //FILEDBLINK