source: projects/synaptic/trunk/common/pkg_acqfile.cc @ 280

Revision 280, 4.4 KB checked in by yasumichi, 13 years ago (diff)

first import

RevLine 
[280]1// pkg_acqfile.cc
2//
3//  Copyright 2002 Daniel Burrows
4//
5//  This program is free software; you can redistribute it and/or modify
6//  it under the terms of the GNU General Public License as published by
7//  the Free Software Foundation; either version 2 of the License, or
8//  (at your option) any later version.
9//
10//  This program is distributed in the hope that it will be useful,
11//  but WITHOUT ANY WARRANTY; without even the implied warranty of
12//  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
13//  GNU General Public License for more details.
14//
15//  You should have received a copy of the GNU General Public License
16//  along with this program; see the file COPYING.  If not, write to
17//  the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
18//  Boston, MA 02111-1307, USA.
19
20// (based on pkg_changelog)
21//
22// mvo: taken from aptitude with a big _thankyou_
23
24#include "pkg_acqfile.h"
25
26#include "config.h"
27#include "i18n.h"
28
29#include <stdio.h>
30#include <errno.h>
31#include <unistd.h>
32#include <fcntl.h>
33#include <signal.h>
34#include <sys/stat.h>
35
36#include <apt-pkg/error.h>
37#include <apt-pkg/configuration.h>
38#include <apt-pkg/acquire-item.h>
39#include <apt-pkg/sourcelist.h>
40#include <apt-pkg/strutl.h>
41
42// Let's all sing a song about apt-pkg's brokenness..
43
44pkgAcqFileSane::pkgAcqFileSane(pkgAcquire *Owner, string URI,
45                               string Description, string ShortDesc,
46                               string filename):
47  Item(Owner)
48{
49  Retries=_config->FindI("Acquire::Retries",0);
50  DestFile=filename;
51
52  Desc.URI=URI;
53  Desc.Description=Description;
54  Desc.Owner=this;
55  Desc.ShortDesc=ShortDesc;
56
57  QueueURI(Desc);
58}
59
60// Straight from acquire-item.cc
61/* Here we try other sources */
62void pkgAcqFileSane::Failed(string Message,pkgAcquire::MethodConfig *Cnf)
63{
64  ErrorText = LookupTag(Message,"Message");
65
66  // This is the retry counter
67  if (Retries != 0 &&
68      Cnf->LocalOnly == false &&
69      StringToBool(LookupTag(Message,"Transient-Failure"),false) == true)
70    {
71      Retries--;
72      QueueURI(Desc);
73      return;
74    }
75
76  Item::Failed(Message,Cnf);
77}
78
79// Mostly copied from pkgAcqArchive.
80bool get_archive(pkgAcquire *Owner, pkgSourceList *Sources,
81                 pkgRecords *Recs, pkgCache::VerIterator const &Version,
82                 string directory, string &StoreFilename)
83{
84  pkgCache::VerFileIterator Vf=Version.FileList();
85
86  if(Version.Arch()==0)
87    return _error->Error(_("I wasn't able to locate a file for the %s package. "
88                           "This might mean you need to manually fix this package. (due to missing arch)"),
89                         Version.ParentPkg().Name());
90
91  /* We need to find a filename to determine the extension. We make the
92     assumption here that all the available sources for this version share
93     the same extension.. */
94  // Skip not source sources, they do not have file fields.
95  for (; Vf.end() == false; Vf++)
96    {
97      if ((Vf.File()->Flags & pkgCache::Flag::NotSource) != 0)
98        continue;
99      break;
100    }
101
102  // Does not really matter here.. we are going to fail out below
103  if (Vf.end() != true)
104    {     
105      // If this fails to get a file name we will bomb out below.
106      pkgRecords::Parser &Parse = Recs->Lookup(Vf);
107      if (_error->PendingError() == true)
108        return false;
109           
110      // Generate the final file name as: package_version_arch.foo
111      StoreFilename = QuoteString(Version.ParentPkg().Name(),"_:") + '_' +
112        QuoteString(Version.VerStr(),"_:") + '_' +
113        QuoteString(Version.Arch(),"_:.") + 
114        "." + flExtension(Parse.FileName());
115    }
116
117   for (; Vf.end() == false; Vf++)
118   {
119      // Ignore not source sources
120      if ((Vf.File()->Flags & pkgCache::Flag::NotSource) != 0)
121         continue;
122
123      // Try to cross match against the source list
124      pkgIndexFile *Index;
125      if (Sources->FindIndex(Vf.File(),Index) == false)
126            continue;
127     
128      // Grab the text package record
129      pkgRecords::Parser &Parse = Recs->Lookup(Vf);
130      if (_error->PendingError() == true)
131         return false;
132
133      string PkgFile = Parse.FileName();
134      if (PkgFile.empty() == true)
135         return _error->Error(_("The package index files are corrupted. No Filename: "
136                              "field for package %s."),
137                              Version.ParentPkg().Name());
138
139      string DestFile = directory + "/" + flNotDir(StoreFilename);
140
141      // Create the item
142      new pkgAcqFileSane(Owner, Index->ArchiveURI(PkgFile),
143                         Index->ArchiveInfo(Version),
144                         Version.ParentPkg().Name(), DestFile);
145
146      Vf++;
147      return true;
148   }
149   return false;
150}
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