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    void AddPattern(char const *Pattern) { Patterns.push_back(Pattern); };
  73    void AddPatterns(std::vector<std::string> const &patterns) { Patterns.insert(Patterns.end(), patterns.begin(), patterns.end()); };
  74    bool SetExts(string const &Vals);
  75
  76    FTWScanner(string const &Arch = string());
  77    virtual ~FTWScanner() {};
  78 };
  79
  80 class TranslationWriter
  81 {
  82    MultiCompress *Comp;
  83    FILE *Output;
  84    std::set<string> Included;
  85    unsigned short RefCounter;
  86
  87    public:
  88    void IncreaseRefCounter() { ++RefCounter; };
  89    unsigned short DecreaseRefCounter() { return (RefCounter == 0) ? 0 : --RefCounter; };
  90    unsigned short GetRefCounter() const { return RefCounter; };
  91    bool DoPackage(string const &Pkg, string const &Desc, string const &MD5);
  92
  93    TranslationWriter(string const &File, string const &TransCompress, mode_t const &Permissions);
  94    TranslationWriter() : Comp(NULL), Output(NULL), RefCounter(0) {};
  95    ~TranslationWriter();
  96 };
  97
  98 class PackagesWriter : public FTWScanner
  99 {
 100    Override Over;
 101    CacheDB Db;
 102
 103    public:
 104
 105    // Some flags
 106    bool DoMD5;
 107    bool DoSHA1;
 108    bool DoSHA256;
 109    bool DoAlwaysStat;
 110    bool NoOverride;
 111    bool DoContents;
 112    bool LongDescription;
 113
 114    // General options
 115    string PathPrefix;
 116    string DirStrip;
 117    FILE *Output;
 118    struct CacheDB::Stats &Stats;
 119    TranslationWriter *TransWriter;
 120
 121    inline bool ReadOverride(string const &File) {return Over.ReadOverride(File);};
 122    inline bool ReadExtraOverride(string const &File)
 123       {return Over.ReadExtraOverride(File);};
 124    virtual bool DoPackage(string FileName);
 125
 126    PackagesWriter(string const &DB,string const &Overrides,string const &ExtOverrides=string(),
 127                   string const &Arch=string());
 128    virtual ~PackagesWriter() {};
 129 };
 130
 131 class ContentsWriter : public FTWScanner
 132 {
 133    CacheDB Db;
 134
 135    GenContents Gen;
 136
 137    public:
 138
 139    // General options
 140    FILE *Output;
 141    struct CacheDB::Stats &Stats;
 142    string Prefix;
 143
 144    bool DoPackage(string FileName,string Package);
 145    virtual bool DoPackage(string FileName)
 146              {return DoPackage(FileName,string());};
 147    bool ReadFromPkgs(string const &PkgFile,string const &PkgCompress);
 148
 149    void Finish() {Gen.Print(Output);};
 150    inline bool ReadyDB(string const &DB) {return Db.ReadyDB(DB);};
 151
 152    ContentsWriter(string const &DB, string const &Arch = string());
 153    virtual ~ContentsWriter() {};
 154 };
 155
 156 class SourcesWriter : public FTWScanner
 157 {
 158    Override BOver;
 159    Override SOver;
 160    char *Buffer;
 161    unsigned long BufSize;
 162
 163    public:
 164
 165    bool NoOverride;
 166
 167    // General options
 168    string PathPrefix;
 169    string DirStrip;
 170    FILE *Output;
 171    struct CacheDB::Stats Stats;
 172
 173    virtual bool DoPackage(string FileName);
 174
 175    SourcesWriter(string const &BOverrides,string const &SOverrides,
 176                  string const &ExtOverrides=string());
 177    virtual ~SourcesWriter() {free(Buffer);};
 178 };
 179
 180 class ReleaseWriter : public FTWScanner
 181 {
 182 public:
 183    ReleaseWriter(string const &DB);
 184    virtual bool DoPackage(string FileName);
 185    void Finish();
 186
 187    FILE *Output;
 188    // General options
 189    string PathPrefix;
 190    string DirStrip;
 191
 192 protected:
 193    struct CheckSum
 194    {
 195       string MD5;
 196       string SHA1;
 197       string SHA256;
 198       // Limited by FileFd::Size()
 199       unsigned long size;
 200       ~CheckSum() {};
 201    };
 202    map<string,struct CheckSum> CheckSums;
 203 };
 204
 205 #endif