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 #ifdef __GNUG__
  17 #pragma interface "writer.h"
  18 #endif
  19
  20 #include <string>
  21 #include <stdio.h>
  22 #include <iostream>
  23 #include <vector>
  24 #include <map>
  25
  26 #include "cachedb.h"
  27 #include "override.h"
  28 #include "apt-ftparchive.h"
  29
  30 using std::string;
  31 using std::cout;
  32 using std::endl;
  33 using std::vector;
  34 using std::map;
  35
  36 class FTWScanner
  37 {
  38    protected:
  39    vector<string> Patterns;
  40    const char *OriginalPath;
  41    char *RealPath;
  42    bool ErrorPrinted;
  43
  44    // Stuff for the delinker
  45    bool NoLinkAct;
  46
  47    static FTWScanner *Owner;
  48    static int Scanner(const char *File,const struct stat *sb,int Flag);
  49
  50    bool Delink(string &FileName,const char *OriginalPath,
  51                unsigned long &Bytes,struct stat &St);
  52
  53    inline void NewLine(unsigned Priority)
  54    {
  55       if (ErrorPrinted == false && Quiet <= Priority)
  56       {
  57          cout << 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 Dir);
  69    bool LoadFileList(string BaseDir,string File);
  70    void ClearPatterns() { Patterns.clear(); };
  71    void AddPattern(string Pattern) { Patterns.push_back(Pattern); };
  72    bool SetExts(string Vals);
  73
  74    FTWScanner();
  75    virtual ~FTWScanner() {delete [] RealPath;};
  76 };
  77
  78 class PackagesWriter : public FTWScanner
  79 {
  80    Override Over;
  81    CacheDB Db;
  82
  83    public:
  84
  85    // Some flags
  86    bool DoMD5;
  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
  96    inline bool ReadOverride(string File) {return Over.ReadOverride(File);};
  97    inline bool ReadExtraOverride(string File)
  98       {return Over.ReadExtraOverride(File);};
  99    virtual bool DoPackage(string FileName);
 100
 101    PackagesWriter(string DB,string Overrides,string ExtOverrides=string());
 102    virtual ~PackagesWriter() {};
 103 };
 104
 105 class ContentsWriter : public FTWScanner
 106 {
 107    CacheDB Db;
 108
 109    GenContents Gen;
 110
 111    public:
 112
 113    // General options
 114    FILE *Output;
 115    struct CacheDB::Stats &Stats;
 116    string Prefix;
 117
 118    bool DoPackage(string FileName,string Package);
 119    virtual bool DoPackage(string FileName)
 120              {return DoPackage(FileName,string());};
 121    bool ReadFromPkgs(string PkgFile,string PkgCompress);
 122
 123    void Finish() {Gen.Print(Output);};
 124    inline bool ReadyDB(string DB) {return Db.ReadyDB(DB);};
 125
 126    ContentsWriter(string DB);
 127    virtual ~ContentsWriter() {};
 128 };
 129
 130 class SourcesWriter : public FTWScanner
 131 {
 132    Override BOver;
 133    Override SOver;
 134    char *Buffer;
 135    unsigned long BufSize;
 136
 137    public:
 138
 139    bool NoOverride;
 140
 141    // General options
 142    string PathPrefix;
 143    string DirStrip;
 144    FILE *Output;
 145    struct CacheDB::Stats Stats;
 146
 147    virtual bool DoPackage(string FileName);
 148
 149    SourcesWriter(string BOverrides,string SOverrides,
 150                  string ExtOverrides=string());
 151    virtual ~SourcesWriter() {free(Buffer);};
 152 };
 153
 154 class ReleaseWriter : public FTWScanner
 155 {
 156 public:
 157    ReleaseWriter(string DB);
 158    virtual bool DoPackage(string FileName);
 159    void Finish();
 160
 161    FILE *Output;
 162    // General options
 163    string PathPrefix;
 164    string DirStrip;
 165
 166 protected:
 167    struct CheckSum
 168    {
 169       string MD5;
 170       string SHA1;
 171       // Limited by FileFd::Size()
 172       unsigned long size;
 173    };
 174    map<string,struct CheckSum> CheckSums;
 175 };
 176
 177 #endif