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Package Record parser

Author: jgg
Date: 1998-08-09 00:51:33 GMT
Package Record parser
debian/1.8.y
Arch Librarian 18 years ago
parent
commit
f55ece0eae
  1. 4
      apt-pkg/deb/deblistparser.cc
  2. 32
      apt-pkg/deb/debrecords.cc
  3. 38
      apt-pkg/deb/debrecords.h
  4. 6
      apt-pkg/makefile
  5. 72
      apt-pkg/pkgcachegen.h
  6. 65
      apt-pkg/pkgrecords.cc
  7. 67
      apt-pkg/pkgrecords.h

4
apt-pkg/deb/deblistparser.cc

@ -1,6 +1,6 @@
// -*- mode: cpp; mode: fold -*-
// Description /*{{{*/
// $Id: deblistparser.cc,v 1.9 1998/07/26 04:49:37 jgg Exp $
// $Id: deblistparser.cc,v 1.10 1998/08/09 00:51:35 jgg Exp $
/* ######################################################################
Package Cache Generator - Generator for the cache structure.
@ -167,7 +167,7 @@ bool debListParser::NewVersion(pkgCache::VerIterator Ver)
return false;
if (ParseDepends(Ver,"Conflicts",pkgCache::Dep::Conflicts) == false)
return false;
if (ParseDepends(Ver,"Replaces",pkgCache::Dep::Depends) == false)
if (ParseDepends(Ver,"Replaces",pkgCache::Dep::Replaces) == false)
return false;
if (ParseProvides(Ver) == false)

32
apt-pkg/deb/debrecords.cc

@ -0,0 +1,32 @@
// -*- mode: cpp; mode: fold -*-
// Description /*{{{*/
// $Id: debrecords.cc,v 1.1 1998/08/09 00:51:36 jgg Exp $
/* ######################################################################
Debian Package Records - Parser for debian package records
##################################################################### */
/*}}}*/
// Include Files /*{{{*/
#ifdef __GNUG__
#pragma implementation "apt-pkg/debrecords.h"
#endif
#include <apt-pkg/debrecords.h>
#include <apt-pkg/error.h>
/*}}}*/
// RecordParser::debRecordParser - Constructor /*{{{*/
// ---------------------------------------------------------------------
/* */
debRecordParser::debRecordParser(FileFd &File) : Tags(File,4*1024)
{
}
/*}}}*/
// RecordParser::Jump - Jump to a specific record /*{{{*/
// ---------------------------------------------------------------------
/* */
bool debRecordParser::Jump(pkgCache::VerFileIterator &Ver)
{
return Tags.Jump(Section,Ver->Offset);
}
/*}}}*/

38
apt-pkg/deb/debrecords.h

@ -0,0 +1,38 @@
// -*- mode: cpp; mode: fold -*-
// Description /*{{{*/
// $Id: debrecords.h,v 1.1 1998/08/09 00:51:36 jgg Exp $
/* ######################################################################
Debian Package Records - Parser for debian package records
This provides display-type parsing for the Packages file. This is
different than the the list parser which provides cache generation
services. There should be no overlap between these two.
##################################################################### */
/*}}}*/
// Header section: pkglib
#ifndef PKGLIB_DEBRECORDS_H
#define PKGLIB_DEBRECORDS_H
#ifdef __GNUG__
#pragma interface "apt-pkg/debrecords.h"
#endif
#include <apt-pkg/pkgrecords.h>
#include <apt-pkg/tagfile.h>
class debRecordParser : public pkgRecords::Parser
{
pkgTagFile Tags;
pkgTagSection Section;
public:
virtual bool Jump(pkgCache::VerFileIterator &Ver);
debRecordParser(FileFd &File);
};
#endif

6
apt-pkg/makefile

@ -20,16 +20,16 @@ SOURCE = contrib/mmap.cc contrib/error.cc contrib/strutl.cc \
# Source code for the main library
SOURCE+= pkgcache.cc version.cc fileutl.cc pkgcachegen.cc depcache.cc \
orderlist.cc tagfile.cc sourcelist.cc packagemanager.cc \
algorithms.cc init.cc templates.cc
pkgrecords.cc algorithms.cc init.cc templates.cc
# Source code for the debian specific components
SOURCE+= deb/deblistparser.cc
SOURCE+= deb/deblistparser.cc deb/debrecords.cc
# Public apt-pkg header files
HEADERS = algorithms.h depcache.h mmap.h pkgcachegen.h cacheiterators.h \
error.h orderlist.h sourcelist.h configuration.h fileutl.h \
packagemanager.h tagfile.h deblistparser.h init.h pkgcache.h \
version.h progress.h
version.h progress.h pkgrecords.h debrecords.h
HEADERS := $(addprefix apt-pkg/,$(HEADERS))
# Private header files

72
apt-pkg/pkgcachegen.h

@ -1,6 +1,6 @@
// -*- mode: cpp; mode: fold -*-
// Description /*{{{*/
// $Id: pkgcachegen.h,v 1.9 1998/07/26 04:49:32 jgg Exp $
// $Id: pkgcachegen.h,v 1.10 1998/08/09 00:51:34 jgg Exp $
/* ######################################################################
Package Cache Generator - Generator for the cache structure.
@ -34,6 +34,7 @@ class pkgCacheGenerator
public:
class ListParser;
friend ListParser;
protected:
@ -51,41 +52,7 @@ class pkgCacheGenerator
unsigned long WriteUniqString(const char *S,unsigned int Size);
inline unsigned long WriteUniqString(string S) {return WriteUniqString(S);};
public:
// This is the abstract package list parser class.
class ListParser
{
pkgCacheGenerator *Owner;
friend pkgCacheGenerator;
protected:
inline unsigned long WriteUniqString(string S) {return Owner->WriteUniqString(S);};
inline unsigned long WriteUniqString(const char *S,unsigned int Size) {return Owner->WriteUniqString(S,Size);};
inline unsigned long WriteString(string S) {return Owner->Map.WriteString(S);};
inline unsigned long WriteString(const char *S,unsigned int Size) {return Owner->Map.WriteString(S,Size);};
bool NewDepends(pkgCache::VerIterator Ver,string Package,
string Version,unsigned int Op,
unsigned int Type);
bool NewProvides(pkgCache::VerIterator Ver,string Package,string Version);
public:
// These all operate against the current section
virtual string Package() = 0;
virtual string Version() = 0;
virtual bool NewVersion(pkgCache::VerIterator Ver) = 0;
virtual bool UsePackage(pkgCache::PkgIterator Pkg,
pkgCache::VerIterator Ver) = 0;
virtual unsigned long Offset() = 0;
virtual unsigned long Size() = 0;
virtual bool Step() = 0;
virtual ~ListParser() {};
};
friend ListParser;
public:
bool SelectFile(string File,unsigned long Flags = 0);
bool MergeList(ListParser &List);
@ -99,4 +66,37 @@ bool pkgSrcCacheCheck(pkgSourceList &List);
bool pkgPkgCacheCheck(string CacheFile);
bool pkgMakeStatusCache(pkgSourceList &List,OpProgress &Progress);
// This is the abstract package list parser class.
class pkgCacheGenerator::ListParser
{
pkgCacheGenerator *Owner;
friend pkgCacheGenerator;
protected:
inline unsigned long WriteUniqString(string S) {return Owner->WriteUniqString(S);};
inline unsigned long WriteUniqString(const char *S,unsigned int Size) {return Owner->WriteUniqString(S,Size);};
inline unsigned long WriteString(string S) {return Owner->Map.WriteString(S);};
inline unsigned long WriteString(const char *S,unsigned int Size) {return Owner->Map.WriteString(S,Size);};
bool NewDepends(pkgCache::VerIterator Ver,string Package,
string Version,unsigned int Op,
unsigned int Type);
bool NewProvides(pkgCache::VerIterator Ver,string Package,string Version);
public:
// These all operate against the current section
virtual string Package() = 0;
virtual string Version() = 0;
virtual bool NewVersion(pkgCache::VerIterator Ver) = 0;
virtual bool UsePackage(pkgCache::PkgIterator Pkg,
pkgCache::VerIterator Ver) = 0;
virtual unsigned long Offset() = 0;
virtual unsigned long Size() = 0;
virtual bool Step() = 0;
virtual ~ListParser() {};
};
#endif

65
apt-pkg/pkgrecords.cc

@ -0,0 +1,65 @@
// -*- mode: cpp; mode: fold -*-
// Description /*{{{*/
// $Id: pkgrecords.cc,v 1.1 1998/08/09 00:51:35 jgg Exp $
/* ######################################################################
Package Records - Allows access to complete package description records
directly from the file.
##################################################################### */
/*}}}*/
// Include Files /*{{{*/
#ifdef __GNUG__
#pragma implementation "apt-pkg/pkgrecords.h"
#endif
#include <apt-pkg/pkgrecords.h>
#include <apt-pkg/debrecords.h>
#include <apt-pkg/error.h>
/*}}}*/
// Records::pkgRecords - Constructor /*{{{*/
// ---------------------------------------------------------------------
/* This will create the necessary structures to access the status files */
pkgRecords::pkgRecords(pkgCache &Cache) : Cache(Cache), Files(0)
{
Files = new PkgFile[Cache.HeaderP->PackageFileCount];
for (pkgCache::PkgFileIterator I = Cache.FileBegin();
I.end() == false; I++)
{
Files[I->ID].File = new FileFd(I.FileName(),FileFd::ReadOnly);
if (_error->PendingError() == true)
return;
Files[I->ID].Parse = new debRecordParser(*Files[I->ID].File);
if (_error->PendingError() == true)
return;
}
}
/*}}}*/
// Records::~pkgRecords - Destructor /*{{{*/
// ---------------------------------------------------------------------
/* */
pkgRecords::~pkgRecords()
{
delete [] Files;
}
/*}}}*/
// Records::Lookup - Get a parser for the package version file /*{{{*/
// ---------------------------------------------------------------------
/* */
pkgRecords::Parser &pkgRecords::Lookup(pkgCache::VerFileIterator &Ver)
{
PkgFile &File = Files[Ver.File()->ID];
File.Parse->Jump(Ver);
return *File.Parse;
}
/*}}}*/
// Records::Pkgfile::~PkgFile - Destructor /*{{{*/
// ---------------------------------------------------------------------
/* */
pkgRecords::PkgFile::~PkgFile()
{
delete Parse;
delete File;
}
/*}}}*/

67
apt-pkg/pkgrecords.h

@ -0,0 +1,67 @@
// -*- mode: cpp; mode: fold -*-
// Description /*{{{*/
// $Id: pkgrecords.h,v 1.1 1998/08/09 00:51:35 jgg Exp $
/* ######################################################################
Package Records - Allows access to complete package description records
directly from the file.
The package record system abstracts the actual parsing of the
package files. This is different than the generators parser in that
it is used to access information not generate information. No
information touched by the generator should be parable from here as
it can always be retreived directly from the cache.
##################################################################### */
/*}}}*/
// Header section: pkglib
#ifndef PKGLIB_PKGRECORDS_H
#define PKGLIB_PKGRECORDS_H
#ifdef __GNUG__
#pragma interface "apt-pkg/pkgrecords.h"
#endif
#include <apt-pkg/pkgcache.h>
#include <apt-pkg/fileutl.h>
class pkgRecords
{
public:
class Parser;
private:
pkgCache &Cache;
// List of package files
struct PkgFile
{
FileFd *File;
Parser *Parse;
PkgFile() : File(0), Parse(0) {};
~PkgFile();
};
PkgFile *Files;
public:
// Lookup function
Parser &Lookup(pkgCache::VerFileIterator &Ver);
// Construct destruct
pkgRecords(pkgCache &Cache);
~pkgRecords();
};
class pkgRecords::Parser
{
public:
virtual bool Jump(pkgCache::VerFileIterator &Ver) = 0;
virtual ~Parser() {};
};
#endif
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