ftparchive/writer.h

   1 // -*- mode: cpp; mode: fold -*-
   2 // Description                                                          /*{{{*/
   3 // $Id: writer.h,v 1.4.2.2 2003/12/26 22:55:43 mdz Exp $
   4 /* ######################################################################
   5
   6    Writer
   7
   8    The file writer classes. These write various types of output, sources,
   9    packages and contents.
  10
  11    ##################################################################### */
  12                                                                         /*}}}*/
  13 #ifndef WRITER_H
  14 #define WRITER_H
  15
  16
  17 #include <string>
  18 #include <stdio.h>
  19 #include <iostream>
  20 #include <vector>
  21 #include <map>
  22 #include <set>
  23
  24 #include "cachedb.h"
  25 #include "multicompress.h"
  26 #include "override.h"
  27 #include "apt-ftparchive.h"
  28
  29 using std::string;
  30 using std::cout;
  31 using std::endl;
  32 using std::vector;
  33 using std::map;
  34
  35 class FTWScanner
  36 {
  37    protected:
  38    vector<string> Patterns;
  39    string Arch;
  40    const char *OriginalPath;
  41    bool ErrorPrinted;
  42
  43    // Stuff for the delinker
  44    bool NoLinkAct;
  45
  46    static FTWScanner *Owner;
  47    static int ScannerFTW(const char *File,const struct stat *sb,int Flag);
  48    static int ScannerFile(const char *File, bool const &ReadLink);
  49
  50    bool Delink(string &FileName,const char *OriginalPath,
  51                unsigned long &Bytes,off_t const &FileSize);
  52
  53    inline void NewLine(unsigned const &Priority)
  54    {
  55       if (ErrorPrinted == false && Quiet <= Priority)
  56       {
  57          c1out << endl;
  58          ErrorPrinted = true;
  59       }
  60    }
  61
  62    public:
  63
  64    unsigned long DeLinkLimit;
  65    string InternalPrefix;
  66
  67    virtual bool DoPackage(string FileName) = 0;
  68    bool RecursiveScan(string const &Dir);
  69    bool LoadFileList(string const &BaseDir,string const &File);
  70    void ClearPatterns() { Patterns.clear(); };
  71    void AddPattern(string const &Pattern) { Patterns.push_back(Pattern); };
  72    bool SetExts(string const &Vals);
  73
  74    FTWScanner(string const &Arch = string());
  75    virtual ~FTWScanner() {};
  76 };
  77
  78 class TranslationWriter
  79 {
  80    MultiCompress *Comp;
  81    FILE *Output;
  82    std::set<string> Included;
  83    unsigned short RefCounter;
  84
  85    public:
  86    void IncreaseRefCounter() { ++RefCounter; };
  87    unsigned short DecreaseRefCounter() { return (RefCounter == 0) ? 0 : --RefCounter; };
  88    unsigned short GetRefCounter() const { return RefCounter; };
  89    bool DoPackage(string const &Pkg, string const &Desc, string const &MD5);
  90
  91    TranslationWriter(string const &File, string const &TransCompress, mode_t const &Permissions);
  92    TranslationWriter() : Comp(NULL), Output(NULL), RefCounter(0) {};
  93    ~TranslationWriter();
  94 };
  95
  96 class PackagesWriter : public FTWScanner
  97 {
  98    Override Over;
  99    CacheDB Db;
 100
 101    public:
 102
 103    // Some flags
 104    bool DoMD5;
 105    bool DoSHA1;
 106    bool DoSHA256;
 107    bool DoAlwaysStat;
 108    bool NoOverride;
 109    bool DoContents;
 110    bool LongDescription;
 111
 112    // General options
 113    string PathPrefix;
 114    string DirStrip;
 115    FILE *Output;
 116    struct CacheDB::Stats &Stats;
 117    TranslationWriter *TransWriter;
 118
 119    inline bool ReadOverride(string const &File) {return Over.ReadOverride(File);};
 120    inline bool ReadExtraOverride(string const &File)
 121       {return Over.ReadExtraOverride(File);};
 122    virtual bool DoPackage(string FileName);
 123
 124    PackagesWriter(string const &DB,string const &Overrides,string const &ExtOverrides=string(),
 125                   string const &Arch=string());
 126    virtual ~PackagesWriter() {};
 127 };
 128
 129 class ContentsWriter : public FTWScanner
 130 {
 131    CacheDB Db;
 132
 133    GenContents Gen;
 134
 135    public:
 136
 137    // General options
 138    FILE *Output;
 139    struct CacheDB::Stats &Stats;
 140    string Prefix;
 141
 142    bool DoPackage(string FileName,string Package);
 143    virtual bool DoPackage(string FileName)
 144              {return DoPackage(FileName,string());};
 145    bool ReadFromPkgs(string const &PkgFile,string const &PkgCompress);
 146
 147    void Finish() {Gen.Print(Output);};
 148    inline bool ReadyDB(string const &DB) {return Db.ReadyDB(DB);};
 149
 150    ContentsWriter(string const &DB, string const &Arch = string());
 151    virtual ~ContentsWriter() {};
 152 };
 153
 154 class SourcesWriter : public FTWScanner
 155 {
 156    Override BOver;
 157    Override SOver;
 158    char *Buffer;
 159    unsigned long BufSize;
 160
 161    public:
 162
 163    bool NoOverride;
 164
 165    // General options
 166    string PathPrefix;
 167    string DirStrip;
 168    FILE *Output;
 169    struct CacheDB::Stats Stats;
 170
 171    virtual bool DoPackage(string FileName);
 172
 173    SourcesWriter(string const &BOverrides,string const &SOverrides,
 174                  string const &ExtOverrides=string());
 175    virtual ~SourcesWriter() {free(Buffer);};
 176 };
 177
 178 class ReleaseWriter : public FTWScanner
 179 {
 180 public:
 181    ReleaseWriter(string const &DB);
 182    virtual bool DoPackage(string FileName);
 183    void Finish();
 184
 185    FILE *Output;
 186    // General options
 187    string PathPrefix;
 188    string DirStrip;
 189
 190 protected:
 191    struct CheckSum
 192    {
 193       string MD5;
 194       string SHA1;
 195       string SHA256;
 196       // Limited by FileFd::Size()
 197       unsigned long size;
 198       ~CheckSum() {};
 199    };
 200    map<string,struct CheckSum> CheckSums;
 201 };
 202
 203 #endif