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 ReadLink);
  47
  48    bool Delink(string &FileName,const char *OriginalPath,
  49                unsigned long &Bytes,off_t FileSize);
  50
  51    inline void NewLine(unsigned Priority)
  52    {
  53       if (ErrorPrinted == false && Quiet <= Priority)
  54       {
  55          cout << 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 Dir);
  67    bool LoadFileList(string BaseDir,string File);
  68    void ClearPatterns() { Patterns.clear(); };
  69    void AddPattern(string Pattern) { Patterns.push_back(Pattern); };
  70    bool SetExts(string 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 NoOverride;
  88    bool DoContents;
  89
  90    // General options
  91    string PathPrefix;
  92    string DirStrip;
  93    FILE *Output;
  94    struct CacheDB::Stats &Stats;
  95    string Arch;
  96
  97    inline bool ReadOverride(string File) {return Over.ReadOverride(File);};
  98    inline bool ReadExtraOverride(string File)
  99       {return Over.ReadExtraOverride(File);};
 100    virtual bool DoPackage(string FileName);
 101
 102    PackagesWriter(string DB,string Overrides,string ExtOverrides=string(),
 103                   string Arch=string());
 104    virtual ~PackagesWriter() {};
 105 };
 106
 107 class ContentsWriter : public FTWScanner
 108 {
 109    CacheDB Db;
 110
 111    GenContents Gen;
 112
 113    public:
 114
 115    // General options
 116    FILE *Output;
 117    struct CacheDB::Stats &Stats;
 118    string Prefix;
 119
 120    bool DoPackage(string FileName,string Package);
 121    virtual bool DoPackage(string FileName)
 122              {return DoPackage(FileName,string());};
 123    bool ReadFromPkgs(string PkgFile,string PkgCompress);
 124
 125    void Finish() {Gen.Print(Output);};
 126    inline bool ReadyDB(string DB) {return Db.ReadyDB(DB);};
 127
 128    ContentsWriter(string DB);
 129    virtual ~ContentsWriter() {};
 130 };
 131
 132 class SourcesWriter : public FTWScanner
 133 {
 134    Override BOver;
 135    Override SOver;
 136    char *Buffer;
 137    unsigned long BufSize;
 138
 139    public:
 140
 141    bool NoOverride;
 142
 143    // General options
 144    string PathPrefix;
 145    string DirStrip;
 146    FILE *Output;
 147    struct CacheDB::Stats Stats;
 148
 149    virtual bool DoPackage(string FileName);
 150
 151    SourcesWriter(string BOverrides,string SOverrides,
 152                  string ExtOverrides=string());
 153    virtual ~SourcesWriter() {free(Buffer);};
 154 };
 155
 156 class ReleaseWriter : public FTWScanner
 157 {
 158 public:
 159    ReleaseWriter(string DB);
 160    virtual bool DoPackage(string FileName);
 161    void Finish();
 162
 163    FILE *Output;
 164    // General options
 165    string PathPrefix;
 166    string DirStrip;
 167
 168 protected:
 169    struct CheckSum
 170    {
 171       string MD5;
 172       string SHA1;
 173       string SHA256;
 174       // Limited by FileFd::Size()
 175       unsigned long size;
 176       ~CheckSum() {};
 177    };
 178    map<string,struct CheckSum> CheckSums;
 179 };
 180
 181 #endif