| 1 | // -*- mode: cpp; mode: fold -*- |
| 2 | // Description /*{{{*/ |
| 3 | // $Id: multicompress.h,v 1.2 2001/02/20 07:03:18 jgg Exp $ |
| 4 | /* ###################################################################### |
| 5 | |
| 6 | MultiCompressor |
| 7 | |
| 8 | Multiple output class. Takes a single FILE* and writes it simultaneously |
| 9 | to many compressed files. Then checks if the resulting output is |
| 10 | different from any previous output and overwrites the old files. Care is |
| 11 | taken to ensure that the new files are not generally readable while they |
| 12 | are being written. |
| 13 | |
| 14 | ##################################################################### */ |
| 15 | /*}}}*/ |
| 16 | #ifndef MULTICOMPRESS_H |
| 17 | #define MULTICOMPRESS_H |
| 18 | |
| 19 | #include <apt-pkg/fileutl.h> |
| 20 | #include <apt-pkg/aptconfiguration.h> |
| 21 | |
| 22 | #include <string> |
| 23 | #include <stdio.h> |
| 24 | #include <sys/types.h> |
| 25 | |
| 26 | class MultiCompress |
| 27 | { |
| 28 | // An output file |
| 29 | struct Files |
| 30 | { |
| 31 | std::string Output; |
| 32 | APT::Configuration::Compressor CompressProg; |
| 33 | Files *Next; |
| 34 | FileFd TmpFile; |
| 35 | pid_t CompressProc; |
| 36 | time_t OldMTime; |
| 37 | }; |
| 38 | |
| 39 | Files *Outputs; |
| 40 | pid_t Outputter; |
| 41 | mode_t Permissions; |
| 42 | |
| 43 | bool Child(int const &Fd); |
| 44 | bool Start(); |
| 45 | bool Die(); |
| 46 | |
| 47 | public: |
| 48 | |
| 49 | // The FD to write to for compression. |
| 50 | FILE *Input; |
| 51 | unsigned long UpdateMTime; |
| 52 | |
| 53 | bool Finalize(unsigned long long &OutSize); |
| 54 | bool OpenOld(int &Fd,pid_t &Proc); |
| 55 | bool CloseOld(int Fd,pid_t Proc); |
| 56 | static bool GetStat(std::string const &Output,std::string const &Compress,struct stat &St); |
| 57 | |
| 58 | MultiCompress(std::string const &Output,std::string const &Compress, |
| 59 | mode_t const &Permissions, bool const &Write = true); |
| 60 | ~MultiCompress(); |
| 61 | }; |
| 62 | |
| 63 | #endif |