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
  23 #include "cachedb.h"
  24 #include "override.h"
  25 #include "apt-ftparchive.h"
  26
  27 using std::string;
  28 using std::cout;
  29 using std::endl;
  30 using std::vector;
  31 using std::map;
  32
  33 class FTWScanner
  34 {
  35    protected:
  36    vector<string> Patterns;
  37    const char *OriginalPath;
  38    char *RealPath;
  39    bool ErrorPrinted;
  40
  41    // Stuff for the delinker
  42    bool NoLinkAct;
  43
  44    static FTWScanner *Owner;
  45    static int ScannerFTW(const char *File,const struct stat *sb,int Flag);
  46    static int ScannerFile(const char *File, bool const &ReadLink);
  47
  48    bool Delink(string &FileName,const char *OriginalPath,
  49                unsigned long &Bytes,off_t const &FileSize);
  50
  51    inline void NewLine(unsigned const &Priority)
  52    {
  53       if (ErrorPrinted == false && Quiet <= Priority)
  54       {
  55          c1out << endl;
  56          ErrorPrinted = true;
  57       }
  58    }
  59
  60    public:
  61
  62    unsigned long DeLinkLimit;
  63    string InternalPrefix;
  64
  65    virtual bool DoPackage(string FileName) = 0;
  66    bool RecursiveScan(string const &Dir);
  67    bool LoadFileList(string const &BaseDir,string const &File);
  68    void ClearPatterns() { Patterns.clear(); };
  69    void AddPattern(string const &Pattern) { Patterns.push_back(Pattern); };
  70    bool SetExts(string const &Vals);
  71
  72    FTWScanner();
  73    virtual ~FTWScanner() {delete [] RealPath;};
  74 };
  75
  76 class PackagesWriter : public FTWScanner
  77 {
  78    Override Over;
  79    CacheDB Db;
  80
  81    public:
  82
  83    // Some flags
  84    bool DoMD5;
  85    bool DoSHA1;
  86    bool DoSHA256;
  87    bool DoAlwaysStat;
  88    bool NoOverride;
  89    bool DoContents;
  90    bool LongDescription;
  91
  92    // General options
  93    string PathPrefix;
  94    string DirStrip;
  95    FILE *Output;
  96    struct CacheDB::Stats &Stats;
  97    string Arch;
  98
  99    inline bool ReadOverride(string const &File) {return Over.ReadOverride(File);};
 100    inline bool ReadExtraOverride(string const &File)
 101       {return Over.ReadExtraOverride(File);};
 102    virtual bool DoPackage(string FileName);
 103
 104    PackagesWriter(string const &DB,string const &Overrides,string const &ExtOverrides=string(),
 105                   string const &Arch=string());
 106    virtual ~PackagesWriter() {};
 107 };
 108
 109 class ContentsWriter : public FTWScanner
 110 {
 111    CacheDB Db;
 112
 113    GenContents Gen;
 114
 115    public:
 116
 117    // General options
 118    FILE *Output;
 119    struct CacheDB::Stats &Stats;
 120    string Prefix;
 121
 122    bool DoPackage(string FileName,string Package);
 123    virtual bool DoPackage(string FileName)
 124              {return DoPackage(FileName,string());};
 125    bool ReadFromPkgs(string const &PkgFile,string const &PkgCompress);
 126
 127    void Finish() {Gen.Print(Output);};
 128    inline bool ReadyDB(string const &DB) {return Db.ReadyDB(DB);};
 129
 130    ContentsWriter(string const &DB);
 131    virtual ~ContentsWriter() {};
 132 };
 133
 134 class SourcesWriter : public FTWScanner
 135 {
 136    Override BOver;
 137    Override SOver;
 138    char *Buffer;
 139    unsigned long BufSize;
 140
 141    public:
 142
 143    bool NoOverride;
 144
 145    // General options
 146    string PathPrefix;
 147    string DirStrip;
 148    FILE *Output;
 149    struct CacheDB::Stats Stats;
 150
 151    virtual bool DoPackage(string FileName);
 152
 153    SourcesWriter(string const &BOverrides,string const &SOverrides,
 154                  string const &ExtOverrides=string());
 155    virtual ~SourcesWriter() {free(Buffer);};
 156 };
 157
 158 class ReleaseWriter : public FTWScanner
 159 {
 160 public:
 161    ReleaseWriter(string const &DB);
 162    virtual bool DoPackage(string FileName);
 163    void Finish();
 164
 165    FILE *Output;
 166    // General options
 167    string PathPrefix;
 168    string DirStrip;
 169
 170 protected:
 171    struct CheckSum
 172    {
 173       string MD5;
 174       string SHA1;
 175       string SHA256;
 176       // Limited by FileFd::Size()
 177       unsigned long size;
 178       ~CheckSum() {};
 179    };
 180    map<string,struct CheckSum> CheckSums;
 181 };
 182
 183 #endif